阅读说明：本技术 一种防止起重机起吊缆绳失速的保护装置 (Protection device for preventing crane hoisting cable stall ) 是由 苏忠楠 于 2020-12-18 设计创作，主要内容包括：本发明涉及起重机的技术领域,且公开了一种防止起重机起吊缆绳失速的保护装置,包括外壳,所述外壳的内部固定连接有支板,支板的表面开设有滑槽,滑槽的内侧活动连接有转动块,支板的外部活动连接有滑杆,滑杆的内侧活动连接有移动块,移动块的外部活动连接有连杆,外壳的内部固定连接有滑轨；通过支板、滑槽、转动块、滑杆、移动块、连杆、滑轨、滑块、检测杆、承接板、伸缩杆、弹簧一、限速板、挡块、转轴、限速组件之间的相互作用下,可以使得缆绳式起重机的作业现场更加的安全,这样也有效的防止起重机失速造成起重作业人员的受伤和设备的损坏,进而降低了起重作业意外造成的经济损失,提高了起重作业的安全。(The invention relates to the technical field of cranes and discloses a protection device for preventing a hoisting cable of a crane from stalling, which comprises a shell, wherein a support plate is fixedly connected inside the shell, a chute is formed in the surface of the support plate, a rotating block is movably connected on the inner side of the chute, a sliding rod is movably connected outside the support plate, a moving block is movably connected on the inner side of the sliding rod, a connecting rod is movably connected outside the moving block, and a sliding rail is fixedly connected inside the shell; under the interaction between extension board, spout, turning block, slide bar, movable block, connecting rod, slide rail, slider, detection pole, accept board, telescopic link, spring one, speed limit board, dog, pivot, the speed limit subassembly, can be so that the job site of cable rope crane is safer, also effectually prevents like this that hoist stall from causing the injury of jack-up operation personnel and the damage of equipment, and then has reduced the economic loss that the jack-up operation accident caused, has improved the safety of jack-up operation.)

1. A protection device for preventing the stall of a hoisting cable of a crane comprises a shell (1), and is characterized in that: a support plate (2) is fixedly connected to the inside of the shell (1), a sliding groove (3) is formed in the surface of the support plate (2), a rotating block (4) is movably connected to the inner side of the sliding groove (3), a sliding rod (5) is movably connected to the outside of the support plate (2), a moving block (6) is movably connected to the inner side of the sliding rod (5), a connecting rod (7) is movably connected to the outside of the moving block (6), a sliding rail (8) is fixedly connected to the inside of the shell (1), a sliding block (9) is movably connected to the inner side of the sliding rail (8), a detection rod (10) is fixedly connected to the outside of the sliding block (9), a bearing plate (11) is fixedly connected to the outside of the bearing plate (11), a telescopic rod (12) is fixedly connected to the outside of the bearing plate (11), a first spring (13, the outside fixedly connected with dog (15) of speed limit board (14), the inboard swing joint of shell (1) has pivot (16), the inside swing joint of pivot (16) has speed limit subassembly (17), the inside swing joint of shell (1) has photosensitive assembly (18), the inside swing joint of shell (1) has detection component (19).

2. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: intensity mouth has been seted up on the surface of shell (1), and the quantity of intensity mouth is no less than twenty, and all intensity mouths evenly distributed is on the surface of shell (1), and emergent mouth has been seted up on the surface of shell (1), and spout (3) correspond and the specification phase-match with the position of turning block (4).

3. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: two ends of the rotating block (4) are movably connected to the inner side of the sliding groove (3) and the outer portion of the moving block (6) respectively, the sliding rod (5) corresponds to the moving block (6) in position and is matched with the moving block in specification, and two ends of the connecting rod (7) are movably connected to the outer portion of the moving block (6) and the outer portion of the sliding block (9) respectively.

4. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: the position of slide rail (8) and slider (9) is corresponding and the specification phase-match, the position of accepting board (11) and pivot (16) is corresponding and the specification phase-match, the both ends of telescopic link (12) fixed connection respectively is in the outside of accepting board (11) and the outside of speed limit board (14), the both ends of spring one (13) fixed connection respectively is in the outside of accepting board (11) and the outside of speed limit board (14), ten are no less than in the quantity of dog (15), all dog (15) evenly distributed are in the outside of speed limit board (14), dog (15) are corresponding and the specification phase-match with the position of pivot (16), pivot (16) are corresponding and the specification phase-match with the position of emergent mouth.

5. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: the speed limiting assembly (17) mainly comprises a closed cover, an extrusion block, a spring II and a contact, wherein the closed cover is fixedly connected inside the rotating shaft (16), the extrusion block is movably connected inside the closed cover, two ends of the spring II are respectively and fixedly connected inside the closed cover and the extrusion block, the contact is fixedly connected inside the closed cover, the extrusion block corresponds to the closed cover in position and is matched with the closed cover in specification, the extrusion block corresponds to the contact in position and is matched with the contact in specification, and compressed nitrogen is added into a space formed by the closed cover and the extrusion block.

6. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: the photosensitive assembly (18) mainly comprises a photosensitive resistor, a protective cover and a light hole, the protective cover is fixedly connected in the shell (1), the light hole is formed in the surface of the protective cover, the photosensitive resistor is fixedly connected in the protective cover, the light hole corresponds to the position of the photosensitive resistor and is matched with the specification of the photosensitive resistor, the light hole corresponds to the position of the detection rod (10) and is matched with the specification of the detection rod, the detection assembly (19) mainly comprises a cover body, an insulating rod, a spring III, a copper rod, an N pole magnetic plate and an S pole magnetic plate, the cover body is fixedly connected in the shell (1), the insulating rod is movably connected outside the cover body, two ends of the spring III are respectively and fixedly connected in the outside of the insulating rod and the inside of the cover body, the copper rod is fixedly connected in the outside of the insulating rod, the N pole magnetic plate and the S pole magnetic plate are both fixedly connected in the cover body, the insulating rod, the N pole magnetic plate and the S pole magnetic plate are corresponding in position and matched in specification, and the copper bar is corresponding in position and matched in specification with the N pole magnetic plate and the S pole magnetic plate.

7. A protection device for preventing the stall of hoisting cables of a crane according to claim 1, characterized in that: the sliding rod (5) is electrically connected with a driving power supply, and the copper bar, the photoresistor, the contact and the driving power supply are all electrically connected with the control center.

Technical Field

The invention relates to the technical field of cranes, in particular to a protection device for preventing a hoisting cable of a crane from stalling.

Background

Mast cranes such as boom cranes, cable-line cranes, derrick cranes and the like are commonly used in engineering, and the mast crane has the following maximum advantages: simple structure, convenient maintenance, easy assembly and disassembly, low cost and large lifting capacity, can be used on narrower construction sites, the cable mast crane has the disadvantages of low work efficiency, poor performance and poor flexibility, the cable mast crane is composed of a main mast, a rotary amplitude mast, a top cable wind rope cap, a cable wind rope, a spherical hinge base and a hoisting pulley block, the existing cable rope crane is widely applied due to the advantages of simple structure, flexible operation, low use cost and the like, however, the existing cable crane does not have a mechanism and a measure for coping with the stalling of the cable crane in the operation work, the goods lifted by the cable crane are generally measured by the tonnage, if there is not stall protection device, have very big potential safety hazard to the operating personnel like this, also can't be to the timely protection of carrying on of goods when the stall simultaneously, cause huge economic loss like this easily.

Therefore, in response to these problems, a protection device for preventing the crane hoisting cable from stalling is needed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a protection device for preventing the stalling of a hoisting cable of a crane, which has the advantages of automatic detection, automatic limit, improvement of operation safety and reduction of economic loss, and solves the problems that the conventional cable crane does not have a mechanism and a measure for coping with the stalling of the cable crane in operation, the goods lifted by the cable crane are generally measured by tonnage, if the stall protection device is not arranged, great potential safety hazards are caused to operating personnel, and meanwhile, the goods cannot be timely protected in the stalling, so that great economic loss is easily caused.

(II) technical scheme

In order to realize the purposes of automatic detection, automatic limit, operation safety improvement and economic loss reduction, the invention provides the following technical scheme: a protection device for preventing the stalling of a hoisting cable of a crane comprises a shell, wherein a support plate is fixedly connected inside the shell, a sliding groove is formed in the surface of the support plate, a rotating block is movably connected on the inner side of the sliding groove, a sliding rod is movably connected outside the support plate, a moving block is movably connected on the inner side of the sliding rod, a connecting rod is movably connected outside the moving block, a sliding rail is fixedly connected inside the shell, a sliding block is movably connected on the inner side of the sliding rail, a detection rod is fixedly connected outside the sliding block, a bearing plate is fixedly connected outside the sliding block, a telescopic rod is fixedly connected outside the bearing plate, a first spring is fixedly connected outside the bearing plate, a speed limiting plate is fixedly connected outside the telescopic rod, a stop block is fixedly connected outside the speed limiting plate, a rotating shaft is movably connected inside, the inside swing joint of shell has detection components.

Preferably, the surface of the shell is provided with strength ports, the number of the strength ports is not less than twenty, all the strength ports are uniformly distributed on the surface of the shell, the surface of the shell is provided with emergency ports, and the sliding groove corresponds to the rotating block in position and is matched with the rotating block in specification.

Preferably, two ends of the rotating block are movably connected to the inner side of the sliding groove and the outer side of the moving block respectively, the sliding rod corresponds to the moving block in position and is matched with the moving block in specification, and two ends of the connecting rod are movably connected to the outer side of the moving block and the outer side of the sliding block respectively.

Preferably, two ends of the rotating block are movably connected to the inner side of the sliding groove and the outer side of the moving block respectively, the sliding rod corresponds to the moving block in position and is matched with the moving block in specification, and two ends of the connecting rod are movably connected to the outer side of the moving block and the outer side of the sliding block respectively.

Preferably, the slide rail is corresponding to the slide block in position and is matched with the slide block in specification, the receiving plate is corresponding to the rotary shaft in position and is matched with the rotary shaft in specification, two ends of the telescopic rod are respectively and fixedly connected to the outer portion of the receiving plate and the outer portion of the speed limiting plate, two ends of the first spring are respectively and fixedly connected to the outer portion of the receiving plate and the outer portion of the speed limiting plate, the number of the stop blocks is not less than ten, all the stop blocks are uniformly distributed on the outer portion of the speed limiting plate, the stop blocks are corresponding to the rotary shaft in position and are matched with the.

Preferably, the photosensitive assembly mainly comprises a photosensitive resistor, a protective cover and a light transmission hole, the protective cover is fixedly connected inside the shell, the light transmission hole is formed in the surface of the protective cover, the photosensitive resistor is fixedly connected inside the protective cover, the light transmission hole corresponds to the position of the photosensitive resistor and is matched with the specification, the light transmission hole corresponds to the position of the detection rod and is matched with the specification, the detection assembly mainly comprises a cover body, an insulating rod, a spring III, a copper rod, an N pole magnetic plate and an S pole magnetic plate, the cover body is fixedly connected inside the shell, the insulating rod is movably connected outside the cover body, two ends of the spring III are respectively fixedly connected outside the insulating rod and inside the cover body, the copper rod is fixedly connected outside the insulating rod, the N pole magnetic plate and the S pole magnetic plate are both fixedly connected inside the cover body, the insulating rod corresponds to the position of the detection rod and is matched with the specification, the N pole magnetic plate corresponds to the position of, the copper bar corresponds to the N pole magnetic plate and the S pole magnetic plate in position and is matched with the N pole magnetic plate and the S pole magnetic plate in specification.

Preferably, the slide bar is electrically connected with a driving power supply, and the copper bar, the photoresistor, the contact and the driving power supply are electrically connected with the control center.

(III) advantageous effects

Compared with the prior art, the invention provides a protection device for preventing the stalling of a hoisting cable of a crane, which has the following beneficial effects:

1. the protection device for preventing the stalling of the hoisting cable of the crane has the advantages that under the interaction of the sliding bearing plate, the telescopic rod, the first spring, the speed limiting plate, the stop block, the rotating shaft and the speed limiting assembly, the stalling information can be automatically detected at the first time under the condition that the speed limiting plate, the stop block and the speed limiting assembly are mutually matched when the cable crane stalls, meanwhile, the crane is automatically limited in time, the occurrence of the threat of the stalling of the cable crane to an operation site and operation personnel is avoided, and the reliability of the cable crane is improved.

2. This prevent protection device of hoist and mount hawser stall through the extension board, the spout, the turning block, the slide bar, the movable block, the connecting rod, the slide rail, the slider, the detection lever, accept the board, the telescopic link, spring one, the speed limit board, the dog, the pivot, under the interact between the speed limit subassembly, can be so that the job site of cable crane is safer, also effectual prevent like this that hoist stall from causing the injury of jack-up operation personnel and the damage of equipment, and then reduced the unexpected economic loss that causes of jack-up operation, the safety of jack-up operation has been improved.

Drawings

FIG. 1 is a schematic view of the present invention with a partial cross-sectional view of the inside thereof;

FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;

FIG. 4 is a schematic view of the structure of FIG. 1 at C according to the present invention;

FIG. 5 is a schematic view of a connection structure of a portion of the structure shown in FIG. 1 according to the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 of the present invention at D;

FIG. 7 is a schematic view of the structure at E in FIG. 5 according to the present invention.

In the figure: 1. a housing; 2. a support plate; 3. a chute; 4. rotating the block; 5. a slide bar; 6. a moving block; 7. a connecting rod; 8. a slide rail; 9. a slider; 10. a detection lever; 11. a bearing plate; 12. a telescopic rod; 13. a first spring; 14. a speed limiting plate; 15. a stopper; 16. a rotating shaft; 17. a speed limiting component; 18. a photosensitive element; 19. and a detection component.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, a protection device for preventing a crane lifting cable from stalling comprises a housing 1, a support plate 2 is fixedly connected inside the housing 1, a sliding groove 3 is formed in the surface of the support plate 2, a rotating block 4 is movably connected to the inner side of the sliding groove 3, strength ports are formed in the surface of the housing 1, the number of the strength ports is not less than twenty, all the strength ports are uniformly distributed on the surface of the housing 1, an emergency port is formed in the surface of the housing 1, the sliding groove 3 corresponds to the rotating block 4 in position and is matched with the specification, a sliding rod 5 is movably connected to the outer side of the support plate 2, a moving block 6 is movably connected to the inner side of the sliding rod 5, a connecting rod 7 is movably connected to the outer side of the moving block 6, a sliding rail 8 is fixedly connected to the inner side of the housing 1, a sliding block 9 is, the position of the sliding rod 5 corresponds to that of the moving block 6 and is matched with the specification, the two ends of the connecting rod 7 are movably connected to the outer portion of the moving block 6 and the outer portion of the sliding block 9 respectively, the outer portion of the sliding block 9 is fixedly connected with a detection rod 10, the two ends of the rotating block 4 are movably connected to the inner side of the sliding groove 3 and the outer portion of the moving block 6 respectively, the position of the sliding rod 5 corresponds to that of the moving block 6 and is matched with the specification, and the two ends of the connecting rod 7 are movably connected to the.

The bearing plate 11 is fixedly connected to the outer part of the sliding block 9, the telescopic rod 12 is fixedly connected to the outer part of the bearing plate 11, the first spring 13 is fixedly connected to the outer part of the bearing plate 11, the speed limiting plate 14 is fixedly connected to the outer part of the telescopic rod 12, the stop block 15 is fixedly connected to the outer part of the speed limiting plate 14, the rotating shaft 16 is movably connected to the inner side of the shell 1, the sliding rail 8 corresponds to the sliding block 9 in position and is matched in specification, the bearing plate 11 corresponds to the rotating shaft 16 in position and is matched in specification, the two ends of the telescopic rod 12 are respectively fixedly connected to the outer part of the bearing plate 11 and the outer part of the speed limiting plate 14, the two ends of the first spring 13 are respectively fixedly connected to the outer part of the bearing plate 11 and the outer part of the speed limiting plate 14, the number of the stop blocks 15 is not less than ten, all the, the speed limiting assembly 17 is movably connected inside the rotating shaft 16, and under the interaction among the sliding bearing plate 11, the telescopic rod 12, the first spring 13, the speed limiting plate 14, the stop block 15, the rotating shaft 16 and the speed limiting assembly 17, stall information can be automatically detected at the first time under the condition that the speed limiting plate 14, the stop block 15 and the speed limiting assembly 17 are mutually matched when the cable crane stalls, meanwhile, the crane is automatically limited in time, the occurrence of the event that the stall of the cable crane threatens the operation site and operators is avoided, and the reliability of the cable crane is improved.

The inside swing joint of shell 1 has photosensitive assembly 18, the inside swing joint of shell 1 has detecting element 19, photosensitive assembly 18 mainly comprises photo resistance, the safety cover, the light trap, the safety cover is fixed in the inside of shell 1, the light trap is seted up on the surface of safety cover, photo resistance fixed connection is in the inside of safety cover, the light trap is corresponding and the specification phase-match with the position of photo resistance, the light trap is corresponding and the specification phase-match with the position of test rod 10, detecting element 19 mainly comprises the cover body, the insulator spindle, spring three, the copper bar, the magnetic sheet of N utmost point, the magnetic sheet of S utmost point, the cover body is fixed connection in the inside of shell 1, the insulator spindle swing joint is in the outside of the cover body, the both ends of spring three are fixed connection respectively in the outside of insulator spindle and the inside of the cover body, the copper bar is fixed connection in the outside of insulator spindle, the magnetic sheet of N, the insulating rod corresponds to the position of the detection rod 10 and has a matched specification, the N pole magnetic plate corresponds to the position of the S pole magnetic plate and has a matched specification, the copper rod corresponds to the N pole magnetic plate and has a matched specification, the sliding rod 5 is electrically connected with the driving power supply, the copper rod, the photoresistor, the contact and the driving power supply are electrically connected with the control center, the operation site of the cable crane can be safer through the interaction among the support plate 2, the sliding groove 3, the rotating block 4, the sliding rod 5, the moving block 6, the connecting rod 7, the sliding rail 8, the sliding block 9, the detection rod 10, the bearing plate 11, the telescopic rod 12, the first spring 13, the speed limiting plate 14, the stop block 15, the rotating shaft 16 and the speed limiting component 17, thereby effectively preventing the crane from causing the injury of lifting operation personnel and the stall of equipment and further reducing the economic loss caused by the accident of the lifting operation, the safety of the hoisting operation is improved.

The device starts to be started, when a rotating shaft 16 stalls, an extrusion block in a speed limiting component 17 slides in the closed cover under the action of centrifugal force until the extrusion block is contacted with a contact, a control center controls a driving power supply to drive a sliding rod 5 to rotate, the sliding rod 5 rotates to drive a rotating block 4 to slide in a sliding groove 3, the rotating block 4 slides to drive a moving block 6 to slide on the inner side of the sliding rod 5, the moving block 6 slides to drive a connecting rod 7 to rotate, the connecting rod 7 rotates to drive a sliding block 9 to slide on the inner side of a sliding rail 8, the sliding block 9 slides to drive a detection rod 10 to move, the sliding block 9 slides to drive a bearing plate 11 to move, the bearing plate 11 moves to drive a telescopic rod 12 and a spring 13 to move, the telescopic rod 12 moves to drive a speed limiting plate 14 to move, the speed limiting plate 14 moves to drive a stop block 15 to be contacted with the rotating, the insulating rod slides to drive the copper rod to do cutting magnetic induction line motion in a magnetic field formed by the N-pole magnetic plate and the S-pole magnetic plate, so that induction current is generated inside the copper rod, and the central pivot is controlled to control the driving power supply to stop driving the sliding rod 5 to rotate.

When a maintenance person finds that maintenance is needed, the maintenance person controls the driving power supply to drive the sliding rod 5 to rotate through the control center, the bearing plate 11 moves to drive the telescopic rod 12 and the spring I13 to move in the same way, the telescopic rod 12 moves to drive the speed limiting plate 14 to move, the speed limiting plate 14 moves to drive the stop block 15 to be separated from the rotating shaft 16, and when the detection rod 10 moves until light irradiated on the surface of the photosensitive resistor through the light transmitting hole is shielded, the resistance value of the photosensitive resistor changes and the current inside the photosensitive resistor changes, so that the control center controls the driving power supply to stop driving the sliding rod 5 to rotate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.