CN206767509U - A kind of Weight type circuit fire stop - Google Patents
A kind of Weight type circuit fire stop Download PDFInfo
- Publication number
- CN206767509U CN206767509U CN201720605175.4U CN201720605175U CN206767509U CN 206767509 U CN206767509 U CN 206767509U CN 201720605175 U CN201720605175 U CN 201720605175U CN 206767509 U CN206767509 U CN 206767509U
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- CN
- China
- Prior art keywords
- weight
- pull bar
- sliding block
- slide plate
- fire stop
- Prior art date
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Abstract
The utility model discloses a kind of Weight type circuit fire stop, including protection cap, fixed seat, housing, pull bar and weight, housing includes shell body and inner housing, is connected with fixed seat on shell body upper side, protection cap is fixed on shell body；Circuit board is provided with inner housing, the lower section of circuit board is provided with sliding block, sliding block downside is arranged with left and right dynamic connection sheet, pull bar is connected with the middle part of sliding block downwards, spring is equipped with pull bar between inner housing and sliding block, left static connection piece and right static connection piece are arranged with the downside bottom surface of inner housing and connects the motor power-supply wire of 380 volts of electric blocks of two-phase respectively；Pull bar is through inner housing and is connected with drive link downwards, and the bottom of drive link is radially provided with through hole, and through hole connects weight by Sling Rope.The utility model is arranged on the passive steel wire rope of electric block, directly disconnects 380 volts of main power lines of two-phase induction motor, safety coefficient is high, prevents suspension hook from rushing to summit, substantially increases the service life of electric block.
Description
Technical field
The stopping means application field of crane gear is the utility model is related to, it is spacing more particularly, to a kind of Weight type cutoff
Device.
Background technology
Weight type circuit fire stop is mounted in the safety guard above electric block, is mainly used for controlling electronic
The lifting altitude of cucurbit, it is hooked in electric gourd hang and weight is touched when playing certain altitude, above weight and and weight
The circuit fire stop action power dump of connection, motor are not rerunned so as to play the effect without damage of protection electric block,
Protect the personal safety of operator and the safety of institute's hoisting thing simultaneously.
Electric block circuit fire stop and weight limiter are to be hooked in certain safe range for limiting electric gourd hang
Interior operation, and the protection electrical equipment controlled in real time the lifting motor of electric block on the base of lifting motor.Pass
The circuit fire stop and weight limiter of system are two kinds of electrical installations, if using both devices simultaneously, will increase production
Cost；In addition, traditional circuit fire stop and weight limiter is the control line for disconnecting A.C. contactor, that is, disconnect two-phase induction motor
Power line（36V）, and cutoff connection sheet is easy to attracting, phase adhesion, job insecurity, it is impossible to and play preferably protection and make
With.
When in use, if groove skipping of steel rope while, existing circuit fire stop just can not be accurate for existing circuit fire stop
The height set really is navigated to, is easy for occurring lifting altitude and crosses higher position easily damaging electric hoist suspension hook, and raising mistake
Low institute's hoisting thing places phenomena such as not in place；Furthermore if electric hoist conductor rope device damages, existing circuit fire stop just can not
Deenergization does not have the effect of safeguard protection.
Utility model content
The purpose of this utility model is to provide a kind of Weight type circuit fire stop, installed in the passive steel wire rope of electric block
On, 380 volts of main power lines of two-phase induction motor are directly disconnected, safety coefficient is high, prevents suspension hook from rushing to summit, substantially increases electric block
Service life.
To reach above-mentioned purpose, the utility model uses following technical scheme：
A kind of Weight type circuit fire stop, including protection cap, fixed seat, housing, pull bar and weight, the housing include
Shell body and the inner housing being arranged on inside shell body, the upper side of shell body have connected up fixed seat, the edge of shell body
Stretch out and be provided with bolt hole, protection cap is coordinated by bolt and bolt hole to be fixed on shell body；Electricity is provided with inner housing
Road plate, the lower section of circuit board are provided with the sliding block laterally set, and left dynamic connection is arranged with the downside at the left and right both ends of sliding block
Piece and right dynamic connection sheet, the middle part of sliding block downside are connected with downwards pull bar, and pull bar lower end is stretched out inner housing and set, inside
Spring is equipped with pull bar between housing and sliding block, left static connection piece and the right side are also arranged with the downside bottom surface of inner housing
Static connection piece, the top of the circuit board include tri- lead-out terminals of E, C, D, tri- lead-out terminals of E, C, D respectively with electronic calabash
The motor of reed is electrically connected with, and two lead-out terminals of E, D connect left static connection piece and right static connection piece, Zuo Jinglian by wire respectively
Contact pin and right static connection piece move the dynamic connection sheet of connection sheet and the right side positioned at the both sides of spring and respectively with a left side and corresponded respectively, and a left side is moved
Connection sheet and right dynamic connection sheet connect the motor power-supply wire of 380 volts of electric blocks of two-phase respectively；Pull bar is passed through under inner housing
Side bottom surface and lower end are connected with downwards drive link, and drive link is radially provided with logical through the bottom of the downside of shell body and drive link
Hole, Sling Rope, the both ends connection weight of Sling Rope are equipped with through hole；Weight type circuit fire stop is vertically-mounted by fixed seat
On the passive steel wire rope of electric block, vertical weight passage, the passive steel wire penetrating of electric block are provided among weight
Weight passage, weight naturally droop.
The channel diameter of weight is more than the diameter of electric block steel wire rope.
The top both ends of weight are arranged with left connector and right connector straight up, left connector and right connector
Horizontal hole clipping is respectively equipped with, the both ends of Sling Rope are located in hole clipping and fixed respectively.
Left slide plate and right slide plate are symmetrically connected with downwards in the middle part of the lower end of circuit board, and left slide plate and right slide plate are vertically arranged simultaneously
And left slide plate is located between pull bar and left dynamic connection sheet, right slide plate be located between pull bar and right dynamic connection sheet, left slide plate with
Right slide plate both passes through sliding block setting, and spring in the raw when, length that left slide plate and right slide plate are stretched out on the downside of sliding block
Degree is more than the compression distance of spring in the presence of weight.
The surface of drive link and pull bar is smooth.
Drive link is connected through a screw thread with pull bar.
Fixed seat is stator, and two fixing holes are arranged with stator.
Wire line shoe is equipped with fixing hole, fixed seat is fixed on passive steel wire rope by wire line shoe.
Sliding block is light plastic sliding block.
The beneficial effects of the utility model：
In the utility model, the input of circuit board is left dynamic connection sheet and right dynamic connection sheet, and the dynamic connection sheet in a left side and the right side are moved
Connection sheet connects the motor power-supply wire of 380 volts of electric blocks of two-phase, tri- lead-out terminal connection electric blocks of E, C, D of circuit board
Motor, what Weight type circuit fire stop directly disconnected is 380 volts of motor power, prevent in use raising exchange connect
The contact adhesive of tentaculum to together, can not deenergization, the situation that hoist lifting hook continues to rise occurs, so as to play protection suspension hook
The effect that will not be rushed to summit, greatly improve the service life of electric block；Weight type circuit fire stop is vertically installed at electric block
Passive steel wire rope on, during use, if there is rope guide damage and phenomena such as groove skipping of steel rope while, Weight type breaks
Fiery limiter is not influenceed by above-mentioned two situations, is risen to the position of weight in suspension hook and is held up weight upwards, spring is upward
Reset stretching so that dynamic connection sheet and the separation of static connection piece, disconnect the motor power of electric block, motor is stopped, electronic
The suspension hook of cucurbit stops rising, and safety coefficient is high, prevents suspension hook from rushing to summit.
Left slide plate and right slide plate both pass through sliding block setting, and left slide plate and right slide plate have position-limiting action to sliding block so that sliding
Block slides up and down along left slide plate and right slide plate；The surface of drive link and pull bar is smooth, reduces frictional force, increases drive link
The flexibility ratio moved up and down with pull bar, improve the sensitivity of Weight type circuit fire stop；The channel diameter of weight is more than electronic
The diameter of cucurbit steel wire rope so that weight is vertically fallen, and is not influenceed by steel wire rope so that the suspension hook of electric block is normal high
When spending scope, due to the effect of weight gravity, dynamic connection sheet and static connection piece closely connect, and make circuit turn-on, electric block
Motor being capable of normal work；Sliding block uses the plastic slide block of lightweight, and when weight lifts up, spring can stretch reset rapidly,
Plastic slide block can effectively mitigate pressure of the sliding block to spring, improve the sensitivity of Weight type circuit fire stop, and plastics are slided
Block has insulating effect, safe to use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the circuit theory diagrams that the utility model controls electric hoist motor；
Fig. 3 is the of the present utility model internal circuit schematic diagram corresponding with Fig. 2.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in figure 1, Weight type circuit fire stop described in the utility model, including protection cap, fixed seat 3, housing 1,
Pull bar 2 and weight 13, housing 1 include shell body 11 and the inner housing 12 being arranged on inside shell body 11, set in inner housing 12
There is circuit board 4, the lower section of circuit board 4 is connected with sliding block 6, and the sliding block 6 is light plastic sliding block, the both ends pair of the downside of sliding block 6
Claim to be provided with left dynamic connection sheet 71 and right dynamic connection sheet 72, the middle part of the downside of sliding block 6 is connected with downwards pull bar 2, under pull bar 2
End is stretched out inner housing 12 and set, and spring 9, the downside of inner housing 12 are equipped with the pull bar 2 between inner housing 12 and sliding block 6
Left static connection piece 81 and right static connection piece 82 are arranged with bottom surface, the upper end of circuit board 4 includes tri- lead-out terminals of E, C, D,
E, motor of tri- lead-out terminals of C, D respectively with electric block is electrically connected with, and two lead-out terminals of E, D are connected respectively by wire
Left static connection piece 81 and right static connection piece 82, left static connection piece 81 and right static connection piece 82 positioned at the both sides of spring 9 and divide respectively
Do not corresponded with the dynamic connection sheet 71 in a left side and right static connection piece 72, the dynamic connection sheet 71 in a left side and right static connection piece 72 connect two-phase respectively
The motor power-supply wire of 380 volts of electric blocks；Left slide plate 141 and right slide plate are symmetrically connected with downwards in the middle part of the lower end of circuit board 4
142, left slide plate 141 and right slide plate 142 are vertically arranged and left slide plate 141 is located between pull bar 2 and left dynamic connection sheet 71, right
Slide plate 142 is located between pull bar 2 and right dynamic connection 72, and left slide plate 141 and right slide plate 142 both pass through sliding block 6 and set, and
Spring 9 in the raw when, the length that left slide plate 141 and right slide plate 142 stretch out the downside of sliding block 6 is more than the effect of weight 13
The compression distance of lower spring 9, left slide plate 141 and right slide plate 142 have position-limiting action to sliding block 6, sliding in the presence of spring 9
Block 6 slides up and down along left slide plate 141 and right slide plate 142；Pull bar 2 is set through the downside bottom surface of inner housing 12 and pull bar
2 lower end is connected with downwards drive link 5, and the upper end of drive link 5 is provided with internal thread, and the lower end of pull bar 2 is provided with external screw thread, drive link 5
It is connected through a screw thread with pull bar 2, the surface of drive link 5 and pull bar 2 is smooth, reduces frictional force, increases drive link 5 and pushes away
The flexibility ratio that pull bar 2 moves up and down, improve the sensitivity of Weight type circuit fire stop；Drive link 5 passes through the downside of shell body 11
Face, the bottom of drive link 5 are radially provided with through hole, are equipped with Sling Rope 10 in through hole, and the top both ends of weight 13 are arranged with perpendicular
Straight upward left connector 131 and right connector 132, horizontal card is respectively equipped with left connector 131 and right connector 132
Hole, the both ends of Sling Rope 10 are located in hole clipping and fixed respectively, are provided with vertical passage among weight 13, and weight 13 is along passage
Axial direction be divided into left weight 134 and right weight 133, the passage of the passive steel wire penetrating weight 13 of electric block, weight 13
Channel diameter is more than the diameter of electric block steel wire rope, and left weight 134 and right weight 133 are bolted, and weight 13 is in
Naturally droop state；The edge of shell body 11 stretches out and is provided with bolt hole 111, and protection cap is fixed on by bolt hole 111
On shell body；The upper side of shell body 11 connects up fixed seat 3, and the fixed seat 3 in the present embodiment is stator, and fixed
Two fixing holes 31 are arranged with piece, wire line shoe is equipped with fixing hole 31, Weight type circuit fire stop passes through fixed seat 3
It is vertically installed at wire line shoe on the passive steel wire rope of electric block, the passive steel wire penetrating weight passage of electric block,
Weight 13 naturally droops.
Tri- lead-out terminals of E, C, D of circuit board 4 are electrically connected with the motor of electric block respectively, input connection two-phase
The motor power-supply wire of 380 volts of electric blocks, two lead-out terminals of E, D connect left static connection piece 81 and right quiet company by wire respectively
Contact pin 82, the dynamic connection sheet 71 in a left side and right dynamic connection sheet 72 connect the motor power-supply wire of 380 volts of electric blocks of two-phase respectively, specifically
As shown in Figures 2 and 3, connection sheet 71 is moved on the left side that A points and B points in Fig. 3 correspond to Weight type circuit fire stop respectively to circuit theory diagrams
With the dynamic connection sheet 72 in the right side, 3 points of E, C, D is connected with the motor of electric block, and what Weight type circuit fire stop directly disconnected is
380 volts of motor power, prevent the contact adhesive of raising A.C. contactor in use to together, can not deenergization,
The situation that hoist lifting hook continues to rise occurs, and so as to play a part of protecting suspension hook not rush to summit, greatly improves electric block
Service life.
In normal work, weight 13 is naturally drooped, and drive link 5 is drawn under the Action of Gravity Field of weight 13 by pull bar 2
Movable slider 6 moves downward along left slide 141 and right slide 142, and spring 9 compresses, the dynamic connection sheet 71 in a left side and right dynamic connection
Piece 72 contacts with left static connection piece 81 and right static connection piece 82 respectively, and circuit is in the conduction state, and the motor of electric block is normal
Work；When the suspension hook of electric block rises to preset height, suspension hook holds up weight 13, and spring 9 is in no gravity of weight 13
In the presence of, it is pulled up resetting so that the dynamic connection sheet 71 in a left side and right dynamic connection sheet 72 are quiet with left static connection piece 81 and the right side respectively
Connection sheet 82 separates, and disconnects the motor power of 380 volts of electric blocks of two-phase, and motor is stopped, and the suspension hook of electric block stops
Rise, safety coefficient is high, prevents suspension hook from rushing to summit.
Claims (9)
- A kind of 1. Weight type circuit fire stop, it is characterised in that：Including protection cap, fixed seat, housing, pull bar and weight, institute Stating housing includes shell body and the inner housing being arranged on inside shell body, and the upper side of shell body has connected up fixed seat, outside The edge of housing stretches out and is provided with bolt hole, and protection cap is coordinated by bolt and bolt hole to be fixed on shell body；Inner casing Circuit board is provided with vivo, and the lower section of circuit board is provided with the sliding block laterally set, symmetrically set on the downside at the left and right both ends of sliding block There are left dynamic connection sheet and right dynamic connection sheet, the middle part of sliding block downside is connected with downwards pull bar, and inner casing is stretched out in pull bar lower end Body is set, and is equipped with spring on the pull bar between inner housing and sliding block, a left side is also arranged with the downside bottom surface of inner housing Static connection piece and right static connection piece, the top of the circuit board include tri- lead-out terminals of E, C, D, tri- lead-out terminals of E, C, D The motor with electric block is electrically connected with respectively, and two lead-out terminals of E, D connect left static connection piece respectively by wire and the right side is quiet Connection sheet, left static connection piece and right static connection piece move connection sheet and right dynamic connection sheet positioned at the both sides of spring and respectively with a left side respectively Correspond, the dynamic connection sheet of the dynamic connection sheet in a left side and the right side connects the motor power-supply wire of 380 volts of electric blocks of two-phase respectively；Pull bar is worn Cross the downside bottom surface of inner housing and lower end and be connected with drive link downwards, drive link is passed through under the downside of shell body and drive link Portion is radially provided with through hole, and Sling Rope, the both ends connection weight of Sling Rope are equipped with through hole；Weight type circuit fire stop passes through solid Reservation is vertically installed on the passive steel wire rope of electric block, and vertical weight passage, the quilt of electric block are provided among weight Dynamic steel wire penetrating weight passage, weight naturally droop.
- 2. Weight type circuit fire stop according to claim 1, it is characterised in that：The channel diameter of the weight is more than electricity The diameter of dynamic cucurbit steel wire rope.
- 3. Weight type circuit fire stop according to claim 2, it is characterised in that：The top both ends of described weight are symmetrical Provided with left connector straight up and right connector, left connector and right connector are respectively equipped with horizontal hole clipping, Sling Rope Both ends be located in respectively in hole clipping and fixed.
- 4. Weight type circuit fire stop according to claim 1, it is characterised in that：In the middle part of the lower end of the circuit board downwards Left slide plate and right slide plate are symmetrically connected with, left slide plate and right slide plate are vertically arranged and left slide plate is located at pull bar and left dynamic connection Between piece, right slide plate is located between pull bar and right dynamic connection sheet, and left slide plate and right slide plate both pass through sliding block setting, and in bullet Spring in the raw when, left slide plate and right slide plate stretch out the length on the downside of sliding block be more than the compression of spring in the presence of weight away from From.
- 5. Weight type circuit fire stop according to claim 1, it is characterised in that：The surface of the drive link and pull bar It is smooth.
- 6. Weight type circuit fire stop according to claim 1, it is characterised in that：The drive link passes through spiral shell with pull bar Line connects.
- 7. Weight type circuit fire stop according to claim 1, it is characterised in that：The fixed seat is stator, and Two fixing holes are arranged with stator.
- 8. Weight type circuit fire stop according to claim 7, it is characterised in that：Steel wire rope is equipped with the fixing hole Card, fixed seat are fixed on passive steel wire rope by wire line shoe.
- 9. Weight type circuit fire stop according to claim 1, it is characterised in that：The sliding block is light plastic sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605175.4U CN206767509U (en) | 2017-05-27 | 2017-05-27 | A kind of Weight type circuit fire stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720605175.4U CN206767509U (en) | 2017-05-27 | 2017-05-27 | A kind of Weight type circuit fire stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206767509U true CN206767509U (en) | 2017-12-19 |
Family
ID=60639084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720605175.4U Expired - Fee Related CN206767509U (en) | 2017-05-27 | 2017-05-27 | A kind of Weight type circuit fire stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206767509U (en) |
-
2017
- 2017-05-27 CN CN201720605175.4U patent/CN206767509U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20200527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |