CN214989780U - Automatic change hoist safety monitoring device - Google Patents
Automatic change hoist safety monitoring device Download PDFInfo
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- CN214989780U CN214989780U CN202121568479.0U CN202121568479U CN214989780U CN 214989780 U CN214989780 U CN 214989780U CN 202121568479 U CN202121568479 U CN 202121568479U CN 214989780 U CN214989780 U CN 214989780U
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Abstract
The utility model discloses an automatic change hoist safety monitoring device relates to the construction equipment technique, aims at solving in case the hoist cable drives and is together rocked by a wide margin by the thing of hanging, takes place very easily by the dangerous condition that the thing falls that hangs, and its technical scheme main points are: fixedly connected with motor on the horizontal pole, fixedly connected with take-up reel in the pivot of motor, the winding has the connection rope on the take-up reel, the other end fixed connection of connecting the rope is on the lifting hook, be provided with the cover on the horizontal pole and establish the becket in the hoist cable outer lane, the becket connects the electricity and is connected with the starting circuit with motor electric connection, the starting circuit receives the becket that produces when touching with the hoist cable and control the motor and start, be provided with the accuse on the motor and stop the circuit, the accuse stops the circuit and detects the motor and rotate the increase back control motor stop work. The utility model discloses can take place to fix a position it when rocking by a wide margin at the hoist cable, avoid making by the hanging thing because inertia drops.
Description
Technical Field
The utility model relates to a construction equipment technique, more specifically say, it relates to an automatic change hoist safety monitoring device.
Background
The crane is a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects in a certain range, and has the working characteristics that corresponding structures of taking, transferring, unloading and the like in one working cycle work alternately, and the development and the use of the crane in various industry fields are more and more widespread.
But the hoist cable of present hoist is when hanging the thing, because the condition that the hoist cable and then hung the thing and rock together can take place when being blown or rotate too fast, in case the hoist cable drives and is rocked together by a wide margin by the thing of hanging, takes place very easily by the dangerous condition that the thing of hanging falls, makes the job site take place the life safety problem then.
Therefore, a new solution is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an automatic change hoist safety monitoring device can take place to fix a position it when rocking by a wide margin at the hoist cable, avoids making by the hanging thing because inertia drops.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an automatic change hoist safety monitoring device, includes the horizontal pole, sets up on the horizontal pole and adopts the hoist cable and the lifting hook of fixed connection hoist cable lower extreme of metal material, fixedly connected with motor on the horizontal pole, fixedly connected with take-up reel in the pivot of motor, the winding has the connection rope on the take-up reel, the other end fixed connection of connecting the rope is on the lifting hook, be provided with the becket that the cover was established in the hoist cable outer lane on the horizontal pole, the becket connects the electricity and is connected with the starting circuit with motor electric connection, the starting circuit receives the initial signal that produces and control motor starts when becket and hoist cable touching, be provided with the accuse on the motor and stop the circuit, the accuse stops the circuit and detects the motor and rotate resistance increase back control motor stop work.
Through adopting above-mentioned technical scheme, when people need hang the heavy object, only need be connected with the heavy object through the lifting hook, then lift up the heavy object through the hoist cable, and when the heavy object takes place to rock the condition through the hoist cable with the lifting hook, the becket of circular telegram can be touch to metal material's hoist cable, can produce an initial signal through the becket and give starting circuit, make starting circuit control motor operation, the motor can stimulate the connection rope, make the hoist cable be connected the rope pulling, no longer rock, and control circuit detects control motor stop work after the motor rotation resistance increases, it is excessive to avoid the hoist cable to be promoted the skew.
The utility model discloses further set up to: the starting circuit comprises a first trigger circuit electrically connected with the metal ring and a switch circuit electrically connected with the first trigger circuit, the first trigger circuit receives a starting signal generated when the metal ring is contacted with the sling and then outputs a first trigger signal, and the switch circuit controls the motor to be electrified after receiving the first trigger signal.
The utility model discloses further set up to: the stop control circuit comprises a rotating speed detection circuit arranged on a rotating shaft of the motor, a comparison circuit connected with the rotating speed detection circuit and a second trigger circuit connected with the comparison circuit, wherein the rotating speed detection circuit is used for detecting the rotating speed of the rotating shaft of the motor and outputting a rotating speed signal, the comparison circuit is used for outputting a comparison signal when the rotating speed signal is smaller than a threshold value, the second trigger circuit is used for outputting a second trigger signal after receiving the comparison signal, and the switch circuit controls the motor to be powered off after receiving the second trigger signal.
The utility model discloses further set up to: the pulley is connected to the cross rod in a sliding mode along the length direction of the cross rod, the guide wheel is connected to the pulley in a rotating mode, the sling penetrates through the guide wheel, the metal ring is fixedly connected to the pulley through a metal rod, a storage battery with the voltage intensity being 5V is fixedly connected to the pulley, and the storage battery is electrically connected with the metal ring.
The utility model discloses further set up to: the first trigger circuit comprises an inverter connected with the metal ring and a D trigger connected with the inverter.
The utility model discloses further set up to: the switching circuit comprises a first triode switch, the base of the first triode switch is connected with the output end of the first trigger circuit, the emitting electrode of the first triode switch is grounded, and the collector of the first triode switch is connected with the motor and then is connected with the power supply.
The utility model discloses further set up to: the rotation speed detection circuit includes a rotation speed sensor.
The utility model discloses further set up to: the comparison circuit comprises a voltage comparator and a second inverter connected with the output end of the voltage comparator.
The utility model discloses further set up to: the second trigger circuit comprises a 555 time base chip and a second triode switch, the base of the second triode switch is connected with the output end of the second triode switch, the emitting electrode of the second triode switch is grounded, the collector of the second triode switch is connected with the relay and then is connected with the power supply, and a normally closed relay switch is connected between the motor and the power supply.
To sum up, the utility model discloses following beneficial effect has:
when people need hang the heavy object, only need be connected with the heavy object through the lifting hook, then lift up the heavy object through the hoist cable, and when the heavy object takes place to rock the condition through the hoist cable with the lifting hook, the becket of circular telegram can be touch to metal material's hoist cable, can produce an initial signal through the becket and give starting circuit, make starting circuit control motor operation, the motor can stimulate the connection rope, make the hoist cable be connected the rope pulling, no longer rock, and the control circuit detects motor rotation resistance increase back control motor stop work, it is excessive to avoid the hoist cable to be pulled the skew.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is an enlarged view at C of FIG. 1;
FIG. 5 is a block diagram of the present invention;
fig. 6 is a wiring diagram of the first trigger circuit and the switch circuit in the present invention;
fig. 7 is a wiring diagram of the middle rotation speed detection circuit, the comparison circuit and the second trigger circuit.
In the figure: 1. a cross bar; 2. a sling; 3. connecting ropes; 4. a metal rod; 5. a metal ring; 6. a hook; 7. a connecting ring; 8. a motor; 9. a first trigger circuit; 10. a switching circuit; 11. a rotation speed detection circuit; 12. a comparison circuit; 13. and a second trigger circuit.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example (b):
an automatic crane safety monitoring device is shown in figures 1-4, and comprises a cross rod 1, a sling 2 which is arranged on the cross rod 1 and made of metal and a hook 6 which is fixedly connected with the lower end of the sling 2, a motor 8 is fixedly connected on the cross rod 1, a take-up reel is fixedly connected on a rotating shaft of the motor 8, a connecting rope 3 is wound on the take-up reel, the other end of the connecting rope 3 is fixedly connected on the hook 6 through a connecting ring 7, a pulley is connected on the cross rod 1 in a sliding way along the length direction of the cross rod, a guide wheel is rotatably connected on the pulley, the sling 2 passes through the guide wheel, a metal ring 5 is fixedly connected on the pulley through a metal rod 4 and is sleeved on the outer ring of the sling 2, a storage battery with the voltage intensity of 5V is fixedly connected on the pulley, the storage battery is electrically connected with the metal ring 5, the sling 2 is grounded through the cross rod 1 and a vertical rod, the metal ring 5 is connected with a starting circuit which is electrically connected with the motor 8, the starting circuit receives a starting signal generated when the metal ring 5 touches the sling 2 and controls the motor 8 to start, a stop control circuit is arranged on the motor 8, and the stop control circuit controls the motor 8 to stop working after detecting that the rotation resistance of the motor 8 is increased.
As shown in fig. 5 and 6, the starting circuit includes a first trigger circuit 9 electrically connected to the metal ring 5 and a first switch circuit 10 electrically connected to the first trigger circuit 9, the first trigger circuit 9 receives a start signal generated when the metal ring 5 touches the sling 2 and then outputs a first trigger signal, the first switch circuit 10 controls the motor 8 to be powered on after receiving the first trigger signal, the first trigger circuit 9 includes an inverter connected to the metal ring 5 and a D flip-flop connected to the inverter, the first switch circuit 10 includes a first triode switch VT1, a base of the first triode switch VT1 is connected to a Q pin of the D flip-flop, an emitter thereof is grounded, a collector thereof is connected to the motor 8 and then connected to a normally closed relay switch K1-1.
As shown in fig. 5 and 7, the stop control circuit includes a rotation speed detection circuit 11 disposed on the rotation shaft of the motor 8, a comparison circuit 12 connected to the rotation speed detection circuit 11, and a second trigger circuit 13 connected to the comparison circuit 12, the rotation speed detection circuit 11 is configured to detect the rotation speed of the rotation shaft of the motor 8 and output a rotation speed signal, the comparison circuit 12 is configured to output a comparison signal when the rotation speed signal is smaller than a threshold value, the second trigger circuit 13 is configured to output a second trigger signal after receiving the comparison signal, the switching circuit 10 controls the motor 8 to be powered off after receiving the second trigger signal, the rotation speed detection circuit 11 includes a rotation speed sensor, the comparison circuit 12 includes a voltage comparator IC1 and a second inverter connected to an output end thereof, the second trigger circuit 13 includes a time base chip IC2 and a triode switch two VT2 with a base and a 3 pin of a 555 time base chip IC2, a resistor R3 is connected between the 3 pin of the time base IC2 and the triode switch two VT2, the pin 2 of the 555 time-base chip IC2 is connected with the output end of the second inverter, the pin 1 of the 555 time-base chip IC2 is grounded, the pin 6 and the pin 7 of the 555 time-base chip IC2 are connected with a capacitor C1 after short circuit and then grounded, the pin 7 of the 555 time-base chip IC2 is connected with electricity, the pin 4 and the pin 8 of the 555 time-base chip are connected with electricity, the pin 5 of the 555 time-base chip IC2 is connected with a capacitor C2 and then grounded, the emitter of the triode switch two VT2 is grounded, and the collector of the triode switch two VT2 is connected with a relay K and then connected with electricity.
When people use the crane to carry out normal heavy object hoisting work, only the lifting hook 6 needs to be capable of hooking the heavy object, then the vertical height of the lifting hook 6 and the heavy object is adjusted by adjusting the length of the sling 2, when the sling 2 shakes in the process of rotating along with the cross rod 1, the sling 2 is electrified with the electrified metal ring 5, because the sling 2 is grounded through the cross rod 1 and the vertical rod, the electric potential generated at the joint of the metal ring 5 and the inverter is lowered, a low-level initial signal is generated, and becomes a high-level start signal to the D flip-flop under the action of the inverter, and the D pin of the D flip-flop receives the high-level start signal, the C1 pin of the D flip-flop is triggered at the rising edge of the start signal, causing the Q pin of the D flip-flop to output a trigger signal one to the triode switch-VT 1 thereby energizing the motor 8 to begin rotation.
The pay-off reel is driven to rotate when motor 8 rotates, then it tightens up connecting rope 3 to make connecting rope 3 pull hoist cable 2, make it no longer take place to rock, but towards 5 squints of becket, and make hoist cable 2 contradict with 5 becket all the time.
When the rotating shaft of the motor 8 pulls the connecting rope 3 and the connecting rope 3 is tightened, the motor 8 pulls the connecting rope 3 again to share part of the components of the sling 2, the hook 6 and the heavy object, so that the rotating speed suddenly drops when the motor 8 rotates, the rotating speed sensor outputs a rotating speed signal when detecting the rotation of the motor 8, when the rotating speed signal is less than the threshold value of the comparison circuit 12IC1, a low level comparison signal is output to pin 2 of the 555 time base chip IC2 through the second inverter, so that the pin 3 of the 555 time-base chip IC2 outputs a trigger signal two to the base of the triode switch two VT2, so that the emitter and the collector of the triode switch two VT2 are electrified, the relay K is electrified, the normally closed relay switch K1-1 is disconnected, therefore, the motor 8 stops operating, the connecting rope 3 can not be pulled, and the excessive deviation of the sling 2 is avoided.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides an automatic change hoist safety monitoring device which characterized in that: comprises a cross bar (1), a sling (2) which is arranged on the cross bar (1) and is made of metal material, and a lifting hook (6) which is fixedly connected with the lower end of the sling (2), the cross bar (1) is fixedly connected with a motor (8), a rotating shaft of the motor (8) is fixedly connected with a take-up reel, a connecting rope (3) is wound on the take-up reel, the other end of the connecting rope (3) is fixedly connected on a lifting hook (6), a metal ring (5) sleeved on the outer ring of the sling (2) is arranged on the cross rod (1), the metal ring (5) is connected with electricity and is connected with a starting circuit which is electrically connected with the motor (8), the starting circuit receives a starting signal generated when the metal ring (5) touches the sling (2) and controls the motor (8) to start, the motor (8) is provided with a stop control circuit, and the stop control circuit controls the motor (8) to stop working after detecting that the rotation resistance of the motor (8) is increased.
2. The automated crane safety monitoring device of claim 1, wherein: the starting circuit comprises a trigger circuit I (9) electrically connected with the metal ring (5) and a switch circuit (10) electrically connected with the trigger circuit I (9), the trigger circuit I (9) receives a starting signal generated when the metal ring (5) is contacted with the sling (2) and then outputs a trigger signal I, and the switch circuit (10) controls the motor (8) to be electrified after receiving the trigger signal I.
3. An automated crane safety monitoring device as claimed in claim 2, wherein: the stop control circuit comprises a rotating speed detection circuit (11) arranged on a rotating shaft of the motor (8), a comparison circuit (12) connected with the rotating speed detection circuit (11) and a second trigger circuit (13) connected with the comparison circuit (12), wherein the rotating speed detection circuit (11) is used for detecting the rotating shaft rotating speed of the motor (8) and outputting a rotating speed signal, the comparison circuit (12) is used for outputting a comparison signal when the rotating speed signal is smaller than a threshold value, the second trigger circuit (13) is used for outputting a second trigger signal after receiving the comparison signal, and the switch circuit (10) controls the motor (8) to be powered off after receiving the second trigger signal.
4. The automated crane safety monitoring device of claim 1, wherein: have the coaster along its length direction sliding connection on horizontal pole (1), it is connected with the leading wheel to rotate on the coaster, hoist cable (2) pass the leading wheel, just becket (5) are through metal bar (4) fixed connection on the coaster, just fixed connection has the battery that voltage strength is 5V on the coaster, battery and becket (5) electric connection.
5. An automated crane safety monitoring device as claimed in claim 2, wherein: the trigger circuit I (9) comprises an inverter connected with the metal ring (5) and a D trigger connected with the inverter.
6. An automated crane safety monitoring device as claimed in claim 2, wherein: the switching circuit (10) comprises a first triode switch, the base of the first triode switch is connected with the output end of the first trigger circuit (9), the emitting electrode of the first triode switch is grounded, and the collector of the first triode switch is connected with the motor (8) and then is connected with the power supply.
7. An automated crane safety monitoring device as claimed in claim 3, wherein: the rotation speed detection circuit (11) includes a rotation speed sensor.
8. An automated crane safety monitoring device as claimed in claim 3, wherein: the comparison circuit (12) comprises a voltage comparator and a second inverter connected to its output.
9. An automated crane safety monitoring device as claimed in claim 3, wherein: the second trigger circuit (13) comprises a 555 time base chip and a second triode switch, the base of the second triode switch is connected with the output end of the second triode switch, the emitting electrode of the second triode switch is grounded, the collector of the second triode switch is connected with the relay and then is connected with the power supply, and a normally closed relay switch is connected between the motor (8) and the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121568479.0U CN214989780U (en) | 2021-07-10 | 2021-07-10 | Automatic change hoist safety monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121568479.0U CN214989780U (en) | 2021-07-10 | 2021-07-10 | Automatic change hoist safety monitoring device |
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| Publication Number | Publication Date |
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| CN214989780U true CN214989780U (en) | 2021-12-03 |
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| CN202121568479.0U Active CN214989780U (en) | 2021-07-10 | 2021-07-10 | Automatic change hoist safety monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2616925A (en) * | 2022-03-23 | 2023-09-27 | Chengde Petroleum College | Clamping mechanism and hoisting device |
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2021
- 2021-07-10 CN CN202121568479.0U patent/CN214989780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2616925A (en) * | 2022-03-23 | 2023-09-27 | Chengde Petroleum College | Clamping mechanism and hoisting device |
| GB2616925B (en) * | 2022-03-23 | 2024-04-17 | Chengde Petroleum College | Clamping mechanism and hoisting device |
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