CN209906212U - Cable pulley protection device that drops - Google Patents
Cable pulley protection device that drops Download PDFInfo
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- CN209906212U CN209906212U CN201920407586.1U CN201920407586U CN209906212U CN 209906212 U CN209906212 U CN 209906212U CN 201920407586 U CN201920407586 U CN 201920407586U CN 209906212 U CN209906212 U CN 209906212U
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- cable pulley
- limit switch
- cable
- slide rail
- pulley
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Abstract
The utility model provides a cable pulley protection device that drops, including slide rail and with slide rail matched with cable pulley, cable pulley can follow the slide rail and remove, install limit switch on the cable pulley, limit switch's contact contacts with the slide rail, just limit switch is connected with the power of driving. Under normal conditions, the cable pulley and the slide rail are normally matched, and the contact of the limit switch is contacted with the slide rail, so that the cable pulley and the limit switch can smoothly slide along the slide rail; when the cable pulley falls off from the slide rail, the contact of the limit switch is separated from the contact relation with the slide rail, and the limit switch acts and cuts off the power supply of the travelling crane, so that the travelling crane stops running, serious equipment accidents caused by the falling of the cable pulley are avoided, and the travelling crane is protected.
Description
Technical Field
The utility model relates to a protection device especially relates to a cable pulley protection device that drops.
Background
The I-steel cable pulley is used for suspending and moving cables of a mobile power supply machine during movement, and is widely applied to various hoisting machines. The I-steel cable pulley has the advantages of firm structure, flexible movement, safety, reliability and the like. The trolley moving cable festoon pulley consists of a traction pulley, a middle cable pulley and a terminal festoon pulley. The traction tackle moves along with the mechanical guide cable (traction) device, and the traction tackle is dragged by a trolley cable bridge and moves back and forth along with the trolley. The middle cable pulley suspends the cable in the range of the I-shaped steel track and moves along with the traction pulley, the two ends of the middle cable pulley are provided with buffering collision heads, and the number of the pulleys is determined according to different moving lengths. The terminal pulley is fixed at the tail end of the I-steel guide rail. The towing trolleys are connected by a towing steel wire rope, the trolleys are dragged by the towing steel wire rope when moving, the cable trolleys move under the action of the towing force of the steel wire rope, the towing steel wire rope is broken, the cable trolleys are blocked, the cable trolleys fall off, the moving cable of the trolleys is broken and damaged, the cable trolleys fall off from an I-shaped steel track, major faults of travelling trolleys and a main winding unit are caused, and the smooth operation of field production is influenced.
The travelling crane is a cargo handling and hoisting device commonly used in production workshops and factories, the travelling crane runs on a girder rail of a factory building arranged at the high position of the workshop or the factory building, and a travelling crane trolley in the prior art moves a cable dragging pulley to be installed on an I-shaped steel rail. The I-steel track is fixedly arranged on the inverted L-shaped channel steel, and by adopting the support structure, the straightness of the I-steel track is deformed due to long-term overload use, so that the condition of blocking exists when the dragging pulley reciprocates, and the hidden trouble problem cannot be eliminated; meanwhile, the center of gravity of the cable pulley is deviated due to the abrasion of the pulley wheels of the towing pulley, so that the bracket of the pulley traveling wheels is rubbed with the I-shaped steel, and the towing pulley falls off; in addition, due to the fact that the cable pulley bears the weight of the cable, the traction steel wire rope is pulled to be broken, the cable is pulled to move by the pulling pulley, and therefore the cable pulley is high in failure rate, time and labor are wasted in overhauling, operation on the traveling crane is unsafe, and field production is seriously affected.
In practical application of travelling crane production, the condition that the pulley is damaged by pulling and falls off due to traction dragging occurs, so that equipment halt affects smooth field production. Therefore, the on-track running state of the cable pulley can be detected on line, and particularly the falling condition of the cable pulley can be detected in time, so that the problem of other equipment faults caused by the falling of the cable pulley is avoided, and the travelling crane is protected.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcoming of the prior art, the to-be-solved technical problem of the utility model is to provide a cable pulley protection device that drops that can play the guard action to the driving a vehicle.
In order to achieve the purpose, the utility model provides a cable pulley protection device that drops, including the slide rail and with slide rail matched with cable pulley, cable pulley can follow the slide rail and remove, install limit switch on the cable pulley, limit switch's contact contacts with the slide rail, just limit switch is connected with the power of driving.
Furthermore, the limit switch is connected with a power supply of the traveling crane through a relay.
Further, the closing point of the limit switch is connected with the relay in series.
Further, limit switch passes through spacing support and installs on the cable pulley.
Further, the limiting support is welded with the cable pulley.
Furthermore, limit switch installs along the one end of slip direction on the cable pulley.
As above, the utility model relates to a cable pulley protection device that drops has following beneficial effect:
the utility model discloses well cable pulley protection device that drops's theory of operation does: under normal conditions, the cable pulley and the slide rail are normally matched, and the contact of the limit switch is contacted with the slide rail, so that the cable pulley and the limit switch can smoothly slide along the slide rail; when the cable pulley falls off from the slide rail, the contact of the limit switch is separated from the contact relation with the slide rail, and the limit switch acts and cuts off the power supply of the travelling crane, so that the travelling crane stops running, serious equipment accidents caused by the falling of the cable pulley are avoided, and the travelling crane is protected.
Drawings
Fig. 1 is the structure schematic diagram of the drop protection device for the middle cable pulley of the utility model.
Fig. 2 is a left side view of the cable pulley falling protection device of the present invention.
Fig. 3 is a schematic view of the connection structure of the middle limit switch and the relay of the present invention.
Fig. 4 is a schematic structural diagram of the middle-sized traveling crane of the present invention.
Description of the element reference numerals
1 sliding rail
2 Cable pulley
3 Limit switch
4 Relay
51 bus junction box
52 traction wire rope
53 electric cable
61 voltage detection module
62 main loop overcurrent module
63 lifting overspeed module
64 lifting weight limiting module
65-door limiting interlocking module
66 zero position relay
67 main contactor module
68 main power supply module
69 button module
71 Start-stop module
72 control relay module
73 power supply contactor
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present application are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, change of the ratio relationship or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are only for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the modifications can be changed or adjusted without substantial technical changes and modifications.
As shown in fig. 1 to 4, the utility model provides a cable pulley protection device that drops, including slide rail 1 and with slide rail 1 matched with cable pulley 2, cable pulley 2 can follow slide rail 1 and remove, installs limit switch 3 on the cable pulley 2, and limit switch 3's contact contacts with slide rail 1, and limit switch 3 is connected with the power of driving a vehicle. The utility model discloses well cable pulley protection device that drops's theory of operation does: under normal conditions, the cable pulley 2 and the sliding rail 1 are normally matched, the contact of the limit switch 3 is contacted with the sliding rail 1, and the cable pulley 2 and the limit switch 3 can smoothly slide along the sliding rail 1; when the cable pulley 2 drops from the slide rail 1, the contact of the limit switch 3 is separated from the contact relation with the slide rail 1, and the limit switch 3 acts and cuts off the power supply of the travelling crane, so that the travelling crane stops running, serious equipment accidents caused by the dropping of the cable pulley 2 are avoided, and the travelling crane protection effect is achieved.
As shown in fig. 3, the limit switch 3 is connected to the power source of the traveling crane through a relay 4 in this embodiment. In the embodiment, the limit switch 3 cuts off the power supply of the traveling crane through the relay 4. Meanwhile, the closing point of the limit switch 3 is connected in series with the relay 4 in this embodiment. The concrete working principle of the cable pulley falling protection device in the embodiment is as follows: when the cable pulley 2 drops from the slide rail 1, the contact of the limit switch 3 is separated from the slide rail 1, the closing point of the limit switch 3 is disconnected, the relay 4 is powered off, the contact of the relay 4 acts, the power supply of the travelling crane is cut off, and the travelling crane stops running, so that serious accidents caused by the dropping of the cable pulley 2 from the slide rail 1 are avoided.
In this embodiment, the limit switch 3 is mounted on the cable pulley 2 through a limit bracket. Meanwhile, the limiting bracket is welded with the cable pulley 2 in the embodiment. In addition, as shown in fig. 1, the limit switch 3 in this embodiment is specifically mounted on one end of the cable block 2 in the sliding direction. The limit bracket and the limit switch 3 form a detection limit mechanism.
In this embodiment, the slide rail 1 is an i-steel rail, and the cable pulley 2 may be referred to as an i-steel cable pulley. Meanwhile, the cable pulley 2 is also called a trolley moving cable towing pulley or a traction cable pulley in the embodiment. The cable pulley protection device that drops plays whether the detection that drops to cable pulley 2 in this embodiment and the effect to driving protection, avoids the driving to continue the operation under the condition that cable pulley 2 drops to ensure driving dolly travelling cable drag the safety of making the coaster, steady operation. Meanwhile, the cable pulley falling protection device in the embodiment is simple in structure, can detect the on-track running state of the cable pulley 2 on line, follows the human-machine, material, method and ring combined ergonomic principle, solves the problem of poor structural stability of the cable pulley 2, and avoids the problem of equipment failure caused by falling of the cable pulley 2.
In this embodiment, the power supply is specifically an operation loop power supply of a traveling crane. This cable pulley protection device that drops can on-line measuring cable pulley 2 at the orbit running state, when finding that cable pulley 2 moves unusually, can in time cut off operation return circuit power, stops the driving operation, avoids cable pulley 2 to drop the problem that causes equipment trouble to avoid because of the adverse effect that cable pulley 2 trouble height brought.
In addition, as shown in fig. 3 and 4, the traveling crane in this embodiment further includes a cart junction box 51, a cart junction box, a fixed wire hanging rack, a cable clamp, a traction steel cable 52, and a cable 53. The cable pulleys 2 are provided in plurality, wherein one cable pulley 2 is a cable tractor which pulls the head. The traveling crane in this embodiment further includes a voltage detection module 61, a main circuit overcurrent module 62, a lifting overspeed module 63, a lifting weight limit module 64, a threshold limit interlocking module 65, a zero relay 66, a main contactor module 67, a main power supply module 68, a button module 69, a start/stop module 71, a control relay module 72, and a power supply contactor 73. The button module 69 includes a start button, a stop button, an emergency stop button, and a key button. The green light is on when the main contactor module 67 is on and the red light is on when the main power module 68 is on.
In practical application, the cable pulley falling protection device in the embodiment does not change the design of the running direction of the original I-shaped steel cable pulley, and the cable pulley falling protection device is simple in overall structure, light and low in cost. Meanwhile, the cable pulley falling protection device in the embodiment is convenient to install, adjust and maintain, can detect the in-orbit running state of the cable pulley 2 on line, and can cut off the power supply of an operation loop in time to stop running when the cable pulley 2 is found to run abnormally, thereby ensuring high running safety and reliability and ensuring the personal safety of detection personnel during maintenance operation. The cable pulley falling protection device has better practicability.
In this embodiment, the limit switch 3 is also referred to as a touch rod mechanical limit or a travel switch, and can detect the relative position state of the cable pulley 2 and the i-steel rail. When the cable pulley 2 falls off from the sliding rail 1, the limit switch 3 acts to cut off the operation loop power supply of the travelling crane, and sends out an alarm signal to stop the travelling crane to avoid serious equipment accidents caused by the falling of the cable pulley 2. The travelling crane in this embodiment is also referred to as a crane.
The manufacturing method of the cable pulley falling protection device in the embodiment is as follows:
1) manufacturing the limit bracket, and installing a limit switch 3 on the limit bracket;
2) welding the limit bracket and the limit switch 3 on the traction towing pulley, and simultaneously adjusting the position of the limit switch 3 to ensure that the detection state of the limit switch 3 is good;
3) connecting the closed point of the limit switch 3 into a relay 4 in series, connecting the open point of the relay 4 into a driving control loop in series, forcing the limit switch 3 to act, and verifying whether the limit switch can cut off the power supply of the operation loop;
4) the suitability of the device is checked by trial run, particularly when the simulation cable pulley 2 is abnormally dropped, whether the limit switch 3 and the relay 4 act or not is checked, and whether an operation loop power supply of a travelling crane can be immediately cut off or not is checked.
In addition, the use method of the cable pulley falling protection device in the embodiment is as follows:
1. in a shutdown state, surveying the condition of an I-shaped steel cable pulley of a travelling crane, and determining a construction scheme for installing a cable pulley falling protection device;
2. fixing the manufactured detection limiting mechanism on a traction cable pulley of the travelling crane in a welding and fixing mode;
3. the position of the detection limiting mechanism is adjusted to ensure that the limiting switch 3 can normally act when the cable pulley 2 falls off;
4. checking the relative position condition of a limit switch 3 arranged on the cable pulley 2 and the I-shaped steel track to ensure that a collision rod, namely a contact of the limit switch 3 is well contacted with the I-shaped steel track; and running in a test run, checking the running state condition of the device, and tracking the stability of the device when the vehicle runs.
According to the cable pulley falling protection device in the embodiment, on the premise that the original design of the I-shaped steel cable pulley is not changed, an applicable online detection falling device is designed and manufactured, and the problem that the pulley is prevented from falling due to the fact that a trolley moves a cable to drag the pulley is solved. The device has the advantages of simple structure, convenient assembly and disassembly, certain practicability and popularization and application. The device is tested on a bar steel high-speed line finished product straddle carrier, and the using effect is good.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a cable pulley protection device that drops, includes slide rail (1) and cable pulley (2) with slide rail (1) matched with, slide rail (1) removal can be followed in cable pulley (2), its characterized in that, install limit switch (3) on cable pulley (2), the contact of limit switch (3) contacts with slide rail (1), just limit switch (3) are connected with the power of driving.
2. The cable block fall protection device according to claim 1, wherein the limit switch (3) is connected to a power supply of the traveling crane through a relay (4).
3. The cable block dropout protection means of claim 2, wherein the closing point of the limit switch (3) is connected in series with the relay (4).
4. A cable block dropout protection means according to claim 1, wherein the limit switch (3) is mounted on the cable block (2) by means of a limit bracket.
5. A cable pulley fall-off protection device according to claim 4, wherein the limiting bracket is welded to the cable pulley (2).
6. A cable block dropout protection means according to claim 1, wherein the limit switch (3) is mounted at one end of the cable block (2) in the sliding direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407586.1U CN209906212U (en) | 2019-03-28 | 2019-03-28 | Cable pulley protection device that drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407586.1U CN209906212U (en) | 2019-03-28 | 2019-03-28 | Cable pulley protection device that drops |
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| Publication Number | Publication Date |
|---|---|
| CN209906212U true CN209906212U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920407586.1U Active CN209906212U (en) | 2019-03-28 | 2019-03-28 | Cable pulley protection device that drops |
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| CN (1) | CN209906212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111924711A (en) * | 2020-09-25 | 2020-11-13 | 长沙岱联机械有限公司 | Cable pulley for transportation |
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2019
- 2019-03-28 CN CN201920407586.1U patent/CN209906212U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111924711A (en) * | 2020-09-25 | 2020-11-13 | 长沙岱联机械有限公司 | Cable pulley for transportation |
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