Device for preventing lifting hook of bridge crane from rushing to top

Abstract

The utility model relates to a device for preventing a lifting hook of a bridge crane from rushing to the top, which belongs to the technical field of cranes and comprises symmetrically arranged main beams, a moving trolley arranged on the main beams, a winding mechanism arranged on the moving trolley, a winding rope wound on the winding mechanism, and a top-rushing clamping frame fixedly mounted at the lower end of the winding rope through a mounting plate. The device comprises a movable trolley, a main beam is arranged in the movable trolley, a jacking clamping frame is arranged in the movable trolley, a jacking preventing assembly is arranged in the jacking clamping frame, a lifting hook is arranged at the bottom of the jacking clamping frame, opposite-type photoelectric switches are evenly arranged below the main beam, and standby buffering assemblies are evenly arranged in the movable trolley. The lifting hook can be prevented from rushing through the cooperation of the arranged anti-rushing assembly and the speed brake, then the reliability of preventing the lifting hook from rushing is improved through the anti-rushing assembly of a mechanical structure, and the safety of devices on the moving trolley can be improved through the standby buffering assembly after the lifting hook rushes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for avoiding the collision of a hook of a bridge crane, and belongs to the technical field of cranes. BACKGROUND

[0002] Bridge cranes are widely used in industrial production, logistics and warehousing, and are mainly used for lifting and transporting heavy objects. During operation, the collision of a hook with an upper limiter of the crane (i.e., the collision of the hook) is a common safety hazard that can cause equipment damage, operation interruption, and even safety accidents. Therefore, a device for avoiding the collision of a hook of a bridge crane is of great significance in improving safety, prolonging the service life of equipment, and improving work efficiency.

[0003] A bridge crane with a safety protection function (publication number: CN221396995U) is known, which comprises a crossbeam and a crane controller. A trolley is arranged on the crossbeam, a winding device is arranged on the trolley, a hook is arranged below the winding device, the winding device and the hook are connected by a steel wire rope, a trigger assembly is arranged at the top of the hook, and an induction assembly corresponding to the trigger assembly is arranged at the bottom of the trolley. When the collision occurs, the hook and the trigger assembly quickly rise, the trigger assembly rises before the two side plates, the light path of the opposite light photoelectric switch is cut off to trigger it, and the crane controller receives the trigger signal of the opposite light photoelectric switch to control the action of the contactor, the normally closed auxiliary contact is disconnected, the main circuit of the motor of the winding device is disconnected, the motor of the winding device is powered off and stopped and the brake is engaged, the hook stops rising, and the purpose of preventing the collision is achieved. At the same time, the collision of the hook is avoided.

[0004] The above existing device can achieve the purpose of preventing the collision of the hook by controlling the power-off of the motor through the opposite light photoelectric switch. However, since the motor in the winding device is an important electrical component, it is used frequently and is prone to failure after long-term use. When the motor fails, the above existing device greatly weakens the effect of preventing the collision of the hook, so it relies on the cooperation of the opposite light photoelectric switch and the motor to avoid the collision of the hook, which is unreliable in safety and reliability and needs to be improved.

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a device for avoiding the collision of a hook of a bridge crane to efficiently avoid the collision of the hook.

[0007] The utility model discloses a device is avoided to bridge -type crane hook to hit the top through the following technical scheme to realize above -mentioned purpose, a device is avoided to bridge -type crane hook to hit the top, including the main girder of symmetrical arrangement, be provided with the moving trolley on the main girder, be provided with winding mechanism on the moving trolley, winding mechanism is provided with winding rope and is wound, the lower extreme of winding rope is fixedly installed with the top -hitting card frame through the mounting plate, be provided with anti -top -hitting subassembly in the top -hitting card frame, the main girder of symmetrical arrangement near one side surface all are fixedly installed with the deceleration plate that cooperates with anti -top -hitting subassembly, the bottom of top -hitting card frame is provided with the hook, the main girder below is evenly provided with the photoelectric switch of opposite -emitting, the inside of moving trolley is evenly provided with spare buffer subassembly, the bottom of top -hitting card frame is provided with height sensor.

[0008] Preferably, in order to be able to wind the winding rope through the winding mechanism, the winding mechanism comprises a motor, a winding roller and a speed reducer, the winding mechanism is used for winding the winding rope, and the winding rope penetrates through the moving trolley and extends below the moving trolley.

[0009] Preferably, in order to be able to connect the winding rope and the top-hitting card frame, the lower end of the winding rope and the mounting plate are fixedly connected with each other, and the mounting plate and the top-hitting card frame are fixedly connected through fastening bolts.

[0010] Preferably, in order to be able to drive the rotating disc to rotate through the rotating motor, the anti-top-hitting subassembly comprises a rotating motor, the rotating motor is fixedly installed in the top-hitting card frame, and the output end of the rotating motor is fixedly installed with a rotating disc with protrusions uniformly arranged on the edge.

[0011] Preferably, in order to be able to make the clamping rod extend in the top-hitting card frame through the rotation of the rotating disc, the support frame is fixedly installed in the top-hitting card frame in a circumferential array, the clamping rod is insertedly arranged in the support frame, one end of the clamping rod is in abutting contact with the edge wall of the rotating disc, and the other end of the clamping rod penetrates through the inner wall of the top-hitting card frame and extends to the outside of the top-hitting card frame.

[0012] Preferably, in order to be able to provide spring elasticity for the movement of the clamping rod through the extension spring, the extension spring is fixedly installed on the clamping rod, one end of the extension spring is fixedly connected with the inner wall of the top-hitting card frame, and one end of the clamping rod is fixedly installed with a rubber friction plate.

[0013] Preferably, in order to supply power to the rotating motor, the bottom surface of the top-hitting card frame is embeddedly installed with a storage battery.

[0014] Preferably, in order to absorb the impact force when the top-striking card frame rises through the buffer spring and the buffer pad, the standby buffer assembly comprises buffer rods and buffer springs, the buffer rods are uniformly inserted into the moving trolley, the lower end of the buffer rod is fixedly installed with a buffer pad, the outer surface of the buffer rod is sleeved and fixedly installed with a buffer spring, and the upper end of the buffer spring and the lower surface of the moving trolley are fixedly connected with each other.

[0015] The device for avoiding the top-striking of the hook of the bridge crane can block the top-striking of the hook through the cooperation of the anti-top-striking assembly and the deceleration plate when the winding mechanism fails, thereby improving the reliability of the anti-top-striking of the hook through the anti-top-striking assembly of the mechanical structure, and improving the safety of the device on the moving trolley after the top-striking of the hook through the standby buffer assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model.

[0017] Figure 2 It is a position schematic view of the standby buffer assembly of the utility model.

[0018] Figure 3 It is a position schematic view of the fastening bolt of the utility model.

[0019] Figure 4 It is a structure schematic view of the anti-top-striking assembly of the utility model.

[0020] Figure 5 It is a structure schematic view of the standby buffer assembly of the utility model.

[0021] Figure 6 It is Figure 1 It is a structure enlarged view of A in the middle.

[0022] In the figure: 1, main beam; 2, moving trolley; 3, winding mechanism; 4, winding rope; 5, top-striking card frame; 6, anti-top-striking assembly; 601, rotary motor; 602, protrusion; 603, rotary disc; 604, support frame; 605, clamping rod; 606, extension spring; 607, rubber friction plate; 7, deceleration plate; 8, hook; 9, pair of photoelectric switches; 10, standby buffer assembly; 1001, buffer rod; 1002, buffer spring; 1003, buffer pad; 11, fastening bolt; 12, storage battery; 13, height sensor. DETAILED DESCRIPTION

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 As shown, a device for preventing the hook of a bridge crane from hitting the top includes symmetrically arranged main beams 1, a moving trolley 2 on the main beams 1, a winding mechanism 3 on the moving trolley 2, a winding rope 4 wound on the winding mechanism 3, a top-hitting frame 5 fixedly installed at the lower end of the winding rope 4 via an mounting plate, an anti-top-hitting component 6 installed inside the top-hitting frame 5, and speed reduction plates 7 that cooperate with the anti-top-hitting component 6 fixedly installed on the surfaces of adjacent sides of the symmetrically arranged main beams 1, a hook 8 installed at the bottom of the top-hitting frame 5, photoelectric switches 9 evenly arranged below the main beams 1, spare buffer components 10 evenly arranged inside the moving trolley 2, and a height sensor 13 installed at the bottom of the top-hitting frame 5. When this device is in use, the operator can wind the winding rope 4 through the winding mechanism 3. After the winding rope 4 is wound, the load under the hook 8 can be lifted. When the hook 8 rises to the top, the motor in the winding mechanism 3 can be shut down by the through-beam photoelectric switch 9, which can prevent the hook 8 from hitting the top and causing damage to the device. When the winding mechanism 3 malfunctions, the height sensor 13 at the bottom of the top-hitting frame 5 will control the hook 8 to rise to the specified height. Then, the controller in the top-hitting frame 5 (since the controller is an existing mechanism, its structure and position are not described in this device) can control the opening of the rotary motor 601 in the anti-top-hitting component 6. This allows the anti-top-hitting component 6 to engage with the speed reduction plate 7, thereby mechanically slowing down the hook 8 to prevent it from hitting the top. If the anti-top-hitting component 6 is damaged due to prolonged use, the backup buffer component 10 can absorb the impact force when the hook 8 hits the top, thereby improving the safety and practicality of the device.

[0025] like Figure 1 As shown, the winding mechanism 3 is used to wind up the winding rope 4. The winding rope 4 passes through the moving trolley 2 and extends to the bottom of the moving trolley 2. The lower end of the winding rope 4 is fixedly connected to the mounting plate. The mounting plate is fixedly connected to the top clamping frame 5 by fastening bolts 11, so that the workers can fix the lower end of the winding rope 4 to the top clamping frame 5 by fastening bolts 11, so that heavy objects can be hung on the hook 8 below the top clamping frame 5.

[0026] like Figure 4As shown, the anti-collision assembly 6 includes a rotary motor 601 fixedly installed inside the collision card frame 5, the output end of the rotary motor 601 is fixedly installed with a rotating disc 603 with protrusions 602 uniformly arranged on the edge, a support frame 604 is fixedly installed in a circular array inside the collision card frame 5, a clamping rod 605 is inserted and arranged in the support frame 604, one end of the clamping rod 605 is in contact with the side wall of the rotating disc 603, the other end of the clamping rod 605 penetrates the inner wall of the collision card frame 5 and extends to the outside of the collision card frame 5, a telescopic spring 606 is fixedly installed on the clamping rod 605, one end of the telescopic spring 606 is fixedly connected with the inner wall of the collision card frame 5, a rubber friction plate 607 is fixedly installed on one end of the clamping rod 605, and a battery 12 is embeddedly installed on the bottom surface of the collision card frame 5, so that when the winding mechanism 3 fails, the photoelectric switch 9 cannot cooperate with the winding mechanism 3 at this time, the height sensor 13 at the bottom of the collision card frame 5 needs to work at this time, when the collision card frame 5 rises to a certain height, the height sensor 13 can transmit a control signal to the controller, the controller can control the opening of the rotary motor 601, then the rotary motor 601 drives the rotating disc 603 to rotate, at this time, the protrusions 602 on the rotating disc 603 contact one end of the clamping rod 605, at this time, the clamping rod 605 extends from the collision card frame 5, and the rubber friction plate 607 at one end of the clamping rod 605 contacts the speed reduction plate 7, thereby achieving mechanical speed reduction of the lifting hook 8.

[0027] As shown in the figure, Figure 5 The standby buffer assembly 10 includes a buffer rod 1001 and a buffer spring 1002, the buffer rod 1001 is uniformly inserted into the moving trolley 2, the lower end of the buffer rod 1001 is fixedly installed with a buffer gasket 1003, the outer surface of the buffer rod 1001 is sleeved and fixedly installed with the buffer spring 1002, and the upper end of the buffer spring 1002 is fixedly connected with the lower surface of the moving trolley 2, so that when the anti-collision assembly 6 fails temporarily, the collision card frame 5 may impact the moving trolley 2 with the lifting hook 8, the buffer spring 1002 in the standby buffer assembly 10 can improve the safety of the device on the moving trolley 2, thereby improving the practical effect of the device.

[0028] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0029] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A device for preventing the hook of a bridge crane from hitting the top, comprising symmetrically arranged main beams (1), a moving trolley (2) provided on the main beams (1), a winding mechanism (3) provided on the moving trolley (2), and a winding rope (4) wound on the winding mechanism (3), characterized in that: The lower end of the winding rope (4) is fixedly installed with a punching card frame (5) through a mounting plate, the punching card frame (5) is provided with a punching prevention assembly (6), the main girder (1) is symmetrically provided with a speed reduction plate (7) matched with the punching prevention assembly (6) on the side surface, the bottom of the punching card frame (5) is provided with a lifting hook (8), the main girder (1) is uniformly provided with a pair of photoelectric switches (9) below, the mobile trolley (2) is uniformly provided with a backup buffer assembly (10) inside, and the bottom of the punching card frame (5) is provided with a height sensor (13).

2. The device for avoiding the collision of the hook of the bridge crane according to claim 1, characterized in that: The winding mechanism (3) is used for winding the winding rope (4), and the winding rope (4) penetrates through the mobile trolley (2) and extends below the mobile trolley (2).

3. The device for avoiding the collision of the hook of the bridge crane according to claim 1, characterized in that: The lower end of the winding rope (4) and the mounting plate are fixedly connected, and the mounting plate and the punching card frame (5) are fixedly connected through a fastening bolt (11).

4. The device for avoiding the collision of the hook of the bridge crane according to claim 1, characterized in that: The punching prevention assembly (6) comprises a rotary motor (601), the rotary motor (601) is fixedly installed in the punching card frame (5), and the output end of the rotary motor (601) is fixedly installed with a rotary disc (603) uniformly provided with protrusions (602) on the edge.

5. The device for avoiding the collision of the hook of the bridge crane according to claim 4, characterized in that: The punching card frame (5) is fixedly installed with a support frame (604) in a circumferential array, the support frame (604) is inserted and arranged with a clamping rod (605), one end of the clamping rod (605) is in close contact with the side wall of the rotary disc (603), and the other end of the clamping rod (605) penetrates the inner wall of the punching card frame (5) and extends to the outside of the punching card frame (5).

6. The device for avoiding the collision of the hook of the bridge crane according to claim 5, characterized in that: The clamping rod (605) is fixedly installed with a telescopic spring (606) above, one end of the telescopic spring (606) is fixedly connected with the inner wall of the punching card frame (5), and the other end of the clamping rod (605) is fixedly installed with a rubber friction plate (607).

7. The device for avoiding the collision of the hook of the bridge crane according to claim 6, characterized in that: The bottom surface of the punching card frame (5) is embeddedly installed with a storage battery (12).

8. The device for avoiding the collision of the hook of the bridge crane according to claim 1, characterized in that: The backup buffer assembly (10) comprises a buffer rod (1001) and a buffer spring (1002), the buffer rod (1001) is uniformly inserted into the mobile trolley (2), the lower end of the buffer rod (1001) is fixedly installed with a buffer gasket (1003), the outer surface of the buffer rod (1001) is sleeved and fixedly installed with a buffer spring (1002), and the upper end of the buffer spring (1002) is fixedly connected with the lower surface of the mobile trolley (2).

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