CN207658889U - A kind of electromagnetic type triggering safety tongs - Google Patents
A kind of electromagnetic type triggering safety tongs Download PDFInfo
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- CN207658889U CN207658889U CN201721805845.3U CN201721805845U CN207658889U CN 207658889 U CN207658889 U CN 207658889U CN 201721805845 U CN201721805845 U CN 201721805845U CN 207658889 U CN207658889 U CN 207658889U
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- safety tongs
- idler wheel
- elevator
- electromagnet
- rod
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Abstract
A kind of electromagnetic type disclosed by the utility model triggers safety tongs, including safety tongs and electromagnetism trigger device, electromagnetism trigger device includes mounting plate and electromagnetism trigger mechanism, safety tongs includes shell, linkage board, 2 calipers being symmetrically disposed on shell and the arrestment mechanism between 2 calipers, electromagnetism trigger mechanism includes electromagnet, swing rod and screw thread axis pin, the utility model is simple in structure, reasonable design, electromagnet is led to by control, power-off, control the location status of swing rod, and then control the arrestment mechanism work of elevator safety gear, arrestment mechanism is clamped using homing position type idler wheel, more previous mechanical trigger mechanism is compared, mechanism is compacter, volume smaller, reaction is also more rapid, and braking effect is apparent, reliably, elevator emergency brake effect out of control is greatly improved, improve the safety in utilization of elevator.
Description
Technical field
The utility model is related to elevator safety field, especially a kind of electromagnetic type triggers safety tongs.
Background technology
Safety tongs has been widely used in elevators field, and elevator safety clamp device is to work as elevator under the manipulation of limiter of speed
Speed is more than the limitation speed of elevator governor setting, or in the case where fracture and relaxation occur for suspension strop, and car is urgent
Stop is simultaneously clamped in a kind of safety device on guide rail.Existing safety tongs is acted after machinery triggering mostly（Machinery triggering
Mechanism is mostly made of safety tongs lever, speed limiter wire rope, tensioning wheel, limiter of speed, rope brake, and overall structure is larger）, and machine
Tool trigger generally existing volume it is big, using cumbersome disadvantage, reaction is not rapid enough, seriously affects the braking that elevator overspeed is, and
And abrasion and failure rate are generally higher, are unfavorable for the raising of elevator safety.
Utility model content
In view of the above-mentioned problems, the utility model discloses a kind of electromagnetic types to trigger safety tongs.
In order to solve the above technical problems, technical solution provided by the utility model is:
A kind of electromagnetic type triggering safety tongs, including safety tongs and electromagnetism trigger device, which is characterized in that the electromagnetism triggering
Device includes mounting plate and electromagnetism trigger mechanism, and the electromagnetism trigger mechanism is fixedly installed on the one of safety tongs by mounting plate
Side；
The safety tongs include shell, linkage board, 2 calipers being symmetrically disposed on shell and positioned at 2 calipers it
Between arrestment mechanism, the caliper is in the shape of a right-angled ladder, the opposite side of 2 calipers be guiding surface, the arrestment mechanism is by 2
The symmetrically arranged brake unit of group is constituted, and the brake unit includes the turning rolls of pull rod, idler wheel pincers and protection idler wheel pincers, institute
Pull rod is stated to be made of connecting rod and elastic rod, the connecting rod and elastic rod are an integral structure, the lower end of the connecting rod with
The central shaft of idler wheel pincers is fixedly connected, and elastic rod is bent in 7 fonts, and lower end is connected with the upper end of connecting rod, the upper end and connection
One end of movable plate is fixedly connected, and the idler wheel clamps patch guiding surface setting, and the turning rolls is fixedly connected with the casing；The peace
Full pincers are used for elevator emergency brake, and the idler wheel pincers are symmetrically arranged in cage guide both sides；
The mounting plate is L-shaped folded plate, includes the first fixed plate for connecting safety tongs and is touched for Motionless electromagnetic
The second fixed plate of mechanism is sent out, the electromagnetism trigger mechanism includes electromagnet, swing rod and screw thread axis pin, the electromagnet and screw thread
Axis pin is divided into the horizontal both sides of the second fixed plate, and the side of electromagnet is fixed with connecting plate, and the connecting plate passes through bolt
It is fixedly connected with the second fixed plate, and then realizes being fixedly connected for electromagnet and mounting plate；
The upper end of the electromagnet is contact, and the swing rod is horizontal positioned, and one end is connected with screw thread axis pin, and and screw thread
Axis pin is rotatablely connected, and the other end is fixedly connected with linkage board, and the lower face of swing rod is contacted with contact upper surface.
A kind of above-mentioned electromagnetic type triggers safety tongs, and the angle that the guiding surface is in horizontal direction is α, the α
It is 78 ° ~ 83 °.
A kind of above-mentioned electromagnetic type triggers safety tongs, and the idler wheel pincers outer diameter outside is away from most low coverage on the outside of the cage guide
From for L, the L=5mm, in the safety tongs braking process, the distance that the safety tongs need to be promoted is H, between described H, L, α
Meet tag α=H/L, H=Ltag α, wherein L=5mm, 78 °《α《83 °, the H in 23.525mm between 40.72mm, i.e. Hmax=
40.72mm Hmin=23.525mm, the swing rod are L with the axial parallel direction length of idler wheel pincers1, the L1For 420mm, institute
It is L that linkage board, which is stated, with the axial parallel direction length of idler wheel pincers2, the L2For 180mm, in the caliper braking process, institute
When stating swing rod and being promoted to extreme position, swing rod and horizontal direction angle are β, and the linkage board is carried away from the screw thread axis pin distalmost end
Lift is from for H1, wherein tag β=H1/（L1+ L2）,H1=（L1+ L2）Tag β, the pull rod include the elastic rod, are being braked
In the process, the elastic rod will produce elastic deformation, wherein H1<H,（L1+ L2）tagβ<H,（L1+ L2）tagβ< Hmin, β<
artg Hmin/（L1+ L2）, β< artg0.04705=0.047°.
A kind of above-mentioned electromagnetic type triggers safety tongs, and controller is connected on the electromagnet.
A kind of above-mentioned electromagnetic type triggers safety tongs, and bayonet lock is equipped at the swing rod and the rotation connection of screw thread axis pin, right
Swing rod is limited.
A kind of above-mentioned electromagnetic type triggers safety tongs, and the working method that a kind of electromagnetic type triggers safety tongs is as follows：
When elevator downlink is out of control, elevator safety system detects that elevator is out of control, and then controls controller and be powered to electromagnet, electromagnet
After energization, contact lifting, and then control one end that swing rod is fixedly connected with linkage board and raise, it is moved up to control pull rod, pull rod
It moves up, idler wheel pincers is driven to be moved along guiding surface, and then spacing reduces between 2 idler wheel pincers, 2 idler wheel pincers are between the two
Guide rail carry out it is two-way clamp down on braking, make elevator stopping in guide rail；It is released from when elevator is out of control, controller stops to electromagnetism Tie Tong
Electricity, contact decline, while idler wheel pincers reset under the elastic reaction of pull rod, and are resetted with driven fork.
A kind of above-mentioned electromagnetic type triggers safety tongs, and the brake force F of the safety tongs is determined according to following expressions：
F=（K1S+K2T）a+（K3S+K4T）g
Wherein, a is acceleration when elevator is run, and g is acceleration of gravity, and cage quality when S is unloaded, T is specified
Carrying quality, K1、K2、K3、K4Value is as follows：When ascending for elevator, K1=2, K2=0.6, K3=0, K4=0.6；When elevator downlink,
K1=1, K2=1, K3=1, K4=1。
The beneficial effects of the utility model are：
A kind of electromagnetic type disclosed by the utility model triggers safety tongs, including safety tongs and electromagnetism trigger device, and electromagnetism touches
Transmitting apparatus includes mounting plate and electromagnetism trigger mechanism, and safety tongs includes shell, linkage board, 2 pincers being symmetrically disposed on shell
Body and the arrestment mechanism between 2 calipers, electromagnetism trigger mechanism include electromagnet, swing rod and screw thread axis pin, this practicality
New structure is simple, reasonable design, by controlling the switching electricity to electromagnet, controls the location status of swing rod, and then control electricity
The arrestment mechanism of terraced safety tongs works, and arrestment mechanism is clamped using homing position type idler wheel, and more previous mechanical trigger mechanism is compared, mechanism
Compacter, volume smaller, reaction are also more rapid, and braking effect is apparent, reliable, are greatly improved that elevator is out of control to answer
Anxious braking effect improves the safety in utilization of elevator.
Description of the drawings
Fig. 1 utility model diagrams.
Fig. 2 the utility model vertical views.
Fig. 3 safety tongs side views.
Specific implementation mode
A kind of electromagnetic type as shown in the figure triggers safety tongs, including safety tongs 1 and electromagnetism trigger device, which is characterized in that
The electromagnetism trigger device includes mounting plate 2 and electromagnetism trigger mechanism, and the electromagnetism trigger mechanism is fixedly installed by mounting plate 2
In the side of safety tongs 1；
The safety tongs 1 includes 4,2 shell 3, linkage board calipers 5 being symmetrically disposed on shell 3 and is clamped positioned at 2
Arrestment mechanism 6 between body 5, the caliper 5 is in the shape of a right-angled ladder, and the opposite side of 2 calipers 5 is guiding surface 7, the system
Motivation structure 6 is made of 2 groups of symmetrically arranged brake units 61, and the brake unit 61 includes pull rod 8, idler wheel pincers 9 and protection
The turning rolls 10 of idler wheel pincers 9, the pull rod 8 are made of connecting rod 81 and elastic rod 82, and the connecting rod 81 and elastic rod 82 are
The lower end of integral structure, the connecting rod 81 is fixedly connected with the central shaft of idler wheel pincers 9, and elastic rod 82 is bent in 7 fonts,
Lower end is connected with the upper end of connecting rod 81, and the upper end is fixedly connected with one end of linkage board 4, and the idler wheel pincers 9 are close to be oriented to oblique
Face 7 is arranged, and the turning rolls 10 is fixedly connected with shell 3；The safety tongs is used for elevator emergency brake, and the idler wheel pincers are symmetrical
It is arranged in cage guide both sides；
The mounting plate 2 is L-shaped folded plate, includes the first fixed plate 21 for connecting safety tongs 1 and for fixed electricity
Second fixed plate 22 of magnetic trigger mechanism, the electromagnetism trigger mechanism include electromagnet 11, swing rod 12 and screw thread axis pin 13, described
Electromagnet 11 and screw thread axis pin 13 are divided into the horizontal both sides of the second fixed plate 22, and the side of electromagnet 11 is fixed with connecting plate
14, the connecting plate 14 is fixedly connected by bolt with the second fixed plate 22, and then realizes the fixation of electromagnet 11 and mounting plate 2
Connection；
The upper end of the electromagnet 11 is contact 15, and the swing rod 12 is horizontal positioned, and one end is connected with screw thread axis pin 13,
And be rotatablely connected with screw thread axis pin 13, the other end is fixedly connected with linkage board 4, and lower face and 15 upper surface of contact of swing rod 12 connect
It touches.
A kind of above-mentioned electromagnetic type triggers safety tongs, wherein and the angle that the guiding surface 7 is in horizontal direction is α,
The α is 78 ° ~ 83 °.
A kind of above-mentioned electromagnetic type triggers safety tongs, which is characterized in that is led away from the elevator on the outside of the idler wheel pincers outer diameter
Minimum distance is L, the L=5mm on the outside of rail, and in the safety tongs braking process, the distance that the safety tongs need to be promoted is H, institute
It states and meets tag α=H/L between H, L, α, H=Ltag α, wherein L=5mm, 78 °《α《83 °, the H is in 23.525mm to 40.72mm
Between, i.e. Hmax=40.72mm, Hmin=23.525mm, the swing rod are L with the axial parallel direction length of idler wheel pincers1, described
L1For 420mm, the linkage board is L with the axial parallel direction length of idler wheel pincers2, the L2For 180mm, the caliper
In braking process, when the swing rod is promoted to extreme position, swing rod and horizontal direction angle are β, and the linkage board is away from the spiral shell
Line axis pin distalmost end range of lift is H1, wherein tag β=H1/（L1+ L2）,H1=（L1+ L2）Tag β, the pull rod include institute
Elastic rod is stated, in braking process, the elastic rod will produce elastic deformation, wherein H1<H,（L1+ L2）tagβ<H,（L1+
L2）tagβ< Hmin, β<artg Hmin/（L1+ L2）, β< artg0.04705=0.047°.
A kind of above-mentioned electromagnetic type triggers safety tongs, wherein controller 16 is connected on the electromagnet 11.
A kind of above-mentioned electromagnetic type triggers safety tongs, wherein is set at the swing rod 12 and the rotation connection of screw thread axis pin 13
There is bayonet lock 17, swing rod 12 is limited.
A kind of above-mentioned electromagnetic type triggers safety tongs 1, and working method is as follows：When elevator downlink is out of control, elevator safety
System detectio is out of control to elevator, and then controls controller and be powered to electromagnet 11, and after electromagnet 11 is powered, contact 15 is lifted, into
And it controls one end that swing rod 12 is fixedly connected with linkage board 4 and raises（The other end of swing rod 12 is rotatablely connected with screw thread axis pin 13）,
Moved up to control pull rod 8, pull rod 8 moves up, and idler wheel pincers is driven 9 to be moved along guiding surface 7, and then between 2 idler wheels pincers 9 between
Away from reduction, 2 idler wheels clamp 9 pairs of guide rails 18 between the two carry out it is two-way clamp down on braking, make elevator stopping in guide rail 18；Work as elevator
Out of control to be released from, controller stops being powered to electromagnet 11, and contact 15 declines, while idler wheel pincers 9 are under the elastic reaction of pull rod 8
It resets, and is resetted with driven fork 12.
A kind of above-mentioned electromagnetic type triggers safety tongs, and the brake force F of the safety tongs is determined according to following expressions：
F=（K1S+K2T）a+（K3S+K4T）g
Wherein, a is acceleration when elevator is run, and g is acceleration of gravity, and cage quality when S is unloaded, T is specified
Carrying quality, K1、K2、K3、K4Value is as follows：When ascending for elevator, K1=2, K2=0.6, K3=0, K4=0.6；When elevator downlink,
K1=1, K2=1, K3=1, K4=1。
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should all cover within the protection scope of the present utility model.Therefore, the scope of protection of the utility model should be with
Subject to the protection domain of claims.
Claims (7)
1. a kind of electromagnetic type triggers safety tongs, including safety tongs and electromagnetism trigger device, which is characterized in that the electromagnetism triggering dress
It sets including mounting plate and electromagnetism trigger mechanism, the electromagnetism trigger mechanism is fixedly installed on the side of safety tongs by mounting plate；
The safety tongs includes shell, linkage board, 2 calipers being symmetrically disposed on shell and between 2 calipers
Arrestment mechanism, the caliper is in the shape of a right-angled ladder, and the opposite side of 2 calipers is guiding surface, and the arrestment mechanism is by 2 groups pairs
The brake unit of setting is claimed to constitute, the brake unit includes the turning rolls of pull rod, idler wheel pincers and protection idler wheel pincers, the drawing
Bar is made of connecting rod and elastic rod, and the connecting rod and elastic rod are an integral structure, the lower end of the connecting rod and idler wheel
The central shaft of pincers is fixedly connected, and elastic rod is bent in 7 fonts, and lower end is connected with the upper end of connecting rod, the upper end and linkage board
One end be fixedly connected, the idler wheel clamps patch guiding surface setting, and the turning rolls is fixedly connected with the casing；The safety tongs
For elevator emergency brake, the idler wheel pincers are symmetrically arranged in cage guide both sides；
The mounting plate is L-shaped folded plate, includes the first fixed plate for connecting safety tongs and triggers machine for Motionless electromagnetic
Second fixed plate of structure, the electromagnetism trigger mechanism include electromagnet, swing rod and screw thread axis pin, the electromagnet and screw thread axis pin
The horizontal both sides of the second fixed plate are divided into, the side of electromagnet is fixed with connecting plate, and the connecting plate passes through bolt and
Two fixed plates are fixedly connected, and then realize being fixedly connected for electromagnet and mounting plate；
The upper end of the electromagnet is contact, and the swing rod is horizontal positioned, and one end is connected with screw thread axis pin, and with screw thread axis pin
Rotation connection, the other end are fixedly connected with linkage board, and the lower face of swing rod is contacted with contact upper surface.
2. a kind of electromagnetic type as described in claim 1 triggers safety tongs, which is characterized in that the guiding surface and horizontal direction
The angle for being in is α, and the α is 78 ° ~ 83 °.
3. a kind of electromagnetic type as claimed in claim 2 triggers safety tongs, which is characterized in that away from institute on the outside of the idler wheel pincers outer diameter
It is L, the L=5mm to state on the outside of cage guide minimum distance, in the safety tongs braking process, the safety tongs need to be promoted away from
From for H, tag α=H/L, H=Ltag α are met between described H, L, α, wherein L=5mm, 78 °《α《83 °, the H is in 23.525mm
To between 40.72mm, i.e. Hmax=40.72mm, Hmin=23.525mm, the swing rod and the axial parallel direction length of idler wheel pincers
For L1, the L1For 420mm, the linkage board is L with the axial parallel direction length of idler wheel pincers2, the L2For 180mm, institute
It states in safety tongs braking process, when the swing rod is promoted to extreme position, swing rod and horizontal direction angle are β, the linkage board
It is H away from the screw thread axis pin distalmost end range of lift1, wherein tag β=H1/（L1+ L2）,H1=（L1+ L2）Tag β, the drawing
Bar includes the elastic rod, and in braking process, the elastic rod will produce elastic deformation, wherein H1<H,（L1+ L2）tagβ<
H,（L1+ L2）tagβ< Hmin, β<artg Hmin/（L1+ L2）, β< artg0.04705=0.047°.
4. a kind of electromagnetic type as described in claim 1 triggers safety tongs, which is characterized in that be connected with control on the electromagnet
Device.
5. a kind of electromagnetic type as described in claim 1 triggers safety tongs, which is characterized in that the swing rod turns with screw thread axis pin
Dynamic junction is equipped with bayonet lock, is limited to swing rod.
6. a kind of electromagnetic type as described in claim 1 triggers safety tongs, which is characterized in that a kind of electromagnetic type triggering peace
The working method clamped entirely is as follows：When elevator downlink is out of control, elevator safety system detects that elevator is out of control, and then controls controller
It is powered to electromagnet, after electromagnet is powered, contact lifting, and then control one end that swing rod is fixedly connected with linkage board and raise, from
And control pull rod and move up, pull rod moves up, and idler wheel pincers is driven to be moved along guiding surface, and then spacing reduces between 2 idler wheel pincers,
2 idler wheel pincers are two-way to guide rail progress between the two to clamp down on braking, makes elevator stopping in guide rail；It is released from when elevator is out of control,
Controller stops being powered to electromagnet, and contact declines, while idler wheel pincers reset under the elastic reaction of pull rod, and multiple with driven fork
Position.
7. a kind of electromagnetic type as described in claim 1 triggers safety tongs, which is characterized in that the brake force F roots of the safety tongs
It is determined according to following expressions：
F=（K1S+K2T）a+（K3S+K4T）g
Wherein, a is acceleration when elevator is run, and g is acceleration of gravity, and cage quality when S is unloaded, T is specified carrying
Quality, K1、K2、K3、K4Value is as follows：When ascending for elevator, K1=2, K2=0.6, K3=0, K4=0.6；When elevator downlink, K1=1,
K2=1, K3=1, K4=1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721805845.3U CN207658889U (en) | 2017-12-21 | 2017-12-21 | A kind of electromagnetic type triggering safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721805845.3U CN207658889U (en) | 2017-12-21 | 2017-12-21 | A kind of electromagnetic type triggering safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207658889U true CN207658889U (en) | 2018-07-27 |
Family
ID=62942043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721805845.3U Active CN207658889U (en) | 2017-12-21 | 2017-12-21 | A kind of electromagnetic type triggering safety tongs |
Country Status (1)
| Country | Link |
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| CN (1) | CN207658889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069314A (en) * | 2017-12-21 | 2018-05-25 | 镇江朝阳机电科技有限公司 | A kind of electromagnetic type triggers safety tongs |
| CN118145461A (en) * | 2024-05-11 | 2024-06-07 | 莱州市华鑫机械有限公司 | Elevator safety device and elevator with same |
-
2017
- 2017-12-21 CN CN201721805845.3U patent/CN207658889U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069314A (en) * | 2017-12-21 | 2018-05-25 | 镇江朝阳机电科技有限公司 | A kind of electromagnetic type triggers safety tongs |
| CN118145461A (en) * | 2024-05-11 | 2024-06-07 | 莱州市华鑫机械有限公司 | Elevator safety device and elevator with same |
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