KR101173136B1 - Stopper device for crane boom collision prevent - Google Patents

Abstract

PURPOSE: A stopper device for preventing the collision of a crane boom is provided to prevent the damage of personal and real properties due to all kinds of accidents by having a structural function for self-collision absorption. CONSTITUTION: A stopper device for preventing the collision of a crane boom comprises a stopper device(21). The stopper device is composed of an upper frame(10) and a lower frame(11) and a buffer frame is installed in position of a crane boom corresponding to the stopper device. An elastic member is attached on the end of the upper frame and the end of the buffer frame. When the boom is crashed with the stopper device, the buffer frame formed in the boom enters into the upper frame of the stopper device because the diameter of the buffer frame is smaller than the upper frame of the stopper device. Multiple buffer tubes are embedded in the upper frame of the stopper device to primarily absorb the impact.

Description

Crane boom anti-collision stopper device {stopper device for crane boom collision prevent}

The present invention relates to a crane boom anti-collision stopper device for preventing the collision and large accident of the crane boom and a-frame and other structures, in particular, a device in consideration of the malfunction and failure of the conventional limit sensor, according to the risk of various accidents In addition, the present invention relates to a crane boom anti-collision stopper device, which can reduce physical property damage as well as improve reliability of a product.

The present invention relates to a crane boom anti-collision stopper device for preventing the collision and large accidents of the crane boom and a-frame and other structures, in particular, the device considering the malfunction and failure of the limit sensor, human and physical properties according to the risk of various accidents It not only reduces property damage but also improves the reliability of the product.

      According to the prior art 'crane' (Registration Patent Publication, Registration No. 10-0853291) in general, jib crane mainly used in shipbuilding docks or yards are a portal frame that functions as a base, and on the upper part of the portal frame A rotating frame rotatably installed through the supporting means, a winch mechanism mounted on the rotating frame to wind and unwind the wire, and a proximal end hinged to the rotating frame to be rotated up and down by the winch mechanism; Stretching jib and hook mechanism is provided to be connected to the wire of the winch mechanism to hang down the jib. At this time, the portal frame is mounted on the rail installed on the ground, it is configured to move along the rail.

     The support means uses a swing bearing configured between a top plate and a bottom plate via a roller, and the bottom plate and the top plate of the swing bearing are coupled to the portal frame and the rotating frame, respectively, to support the rotating frame. do.

At this time, the pivot bearing performs the function of setting the center of rotation of the rotating frame and the function of supporting the load of the rotating frame. In addition, a driving device is connected to the portal frame or the rotating frame to rotate the rotating frame.

     Therefore, in the state of hanging the goods to be moved to the hook mechanism, the crane can move the goods to a desired position by elevating the hook mechanism with a winch mechanism or adjusting the length or angle of the jib, and turning the rotating frame with the drive device. It is described as.

     In addition, the claim 1 includes a portal frame functioning as a base; A rotating frame rotatably installed on the upper portion of the portal frame through a supporting means; A driving device for pivoting the rotating frame; A winch mechanism mounted to the rotating frame to wind or unwind a wire; A jib installed on the rotating frame; A crane having a hook mechanism configured to hang or fix an item to be moved and connected to a wire extending from a winch mechanism and installed on a lower side of the jib, wherein the supporting means is connected to the portal frame and the rotating frame. Is coupled to the king pin so that the rotating frame is not out of position; The lower guide rail and the upper guide rail, which are configured to have a circular trajectory and are installed to face each other on the upper surface of the portal frame and the lower side of the rotating frame, respectively, and the lower guide rail and the upper guide rail so that the rotation axis faces the central axis of the kingpin. A plurality of rollers are disposed in a circular shape therebetween, and a cage unit coupled to the rotating shaft of the roller to support the roller, the support unit supporting the rotating frame stably, and the cage unit includes a long metal plate. The inner roller cage formed by rounding the inner ring, the outer roller cage having a larger diameter than the inner roller cage and arranged to form a concentric circle with the inner roller cage, and coupled between the inner and outer roller cages. , Retainer pin to fix the gap of outer roller cage The crane, characterized in that the inner, outer roller cage is configured by continuously connecting the support panel provided with a connection bracket at one end.

     In addition, according to another conventional technology, according to the 'mobile crane' (Registration Utility Model Publication, Registration No. 20-0454993), the mobile crane is connected to the horizontal frame made of a rectangular shape, vertically to each corner of the horizontal frame and the bottom thereof In the crane consisting of a vertical frame having a wheel connecting portion for mounting the wheel, and a wheel rotatably mounted to the wheel connecting portion, the wheel is formed on the rail installed on the ground to form a rail groove recessed to a certain depth in the center Consists of guided rail wheels and a pair of tire wheels fixed to both sides of the rail wheels so as to travel on a flat surface consisting of rims and tires. By forming, it is driven by a rain wheel on the rail, and on the tire wheel on the road surface where the rail is not formed. It is driven by the vehicle so that it can be driven in a wide range of terrain conditions, and when the wheel is connected to the crane, the axis of rotation is formed in the direction perpendicular to the driving direction so that the wheel is inclined along the inclined surface as well as on the flat surface, so that the road surface and the wheel do not float. It is described as a mobile crane with improved runability and safety.

     In addition, claim 1 is a horizontal frame made of a rectangular shape, a vertical frame having a wheel connecting portion that is vertically connected to each corner of the horizontal frame and the wheel can be mounted on the lower end, and is rotatably mounted to the wheel connecting portion A wheel for a rail formed in a crane consisting of a wheel, the rail being guided by a rail installed on the ground to form a rail groove recessed by a predetermined depth in the center; A pair of tire wheels fixed to both sides of the wheel for rails to travel on a flat surface consisting of a rim and a tire; In the mobile crane consisting of, the wheel connecting portion is fixed to the upper plate connected to the bottom of the vertical frame, and a pair of fixed plates that are vertically connected to the lower sides of the upper plate and the fixture is perforated; A pair of support plates having a 'c' shape as a whole, and the connector and the corresponding connector are spaced apart by a predetermined distance, a connecting plate connecting each upper end of the support plate, and an assembly plate connected to the bottom of the support plate. A rotating frame formed between the fixing plates so that the fixing tool and the connecting member are located in a straight line; A cylindrical rod fixed to the fixture and the connector to form a rotating shaft of the rotating frame; A bearing housing connected to the assembly plate of the rotating frame and rotatably connected to the wheel by embedding a bearing; It is described as a mobile crane, characterized in that consisting of.

     In addition, according to another conventional technology, according to the 'crane collision prevention and monitoring system' (registered patent publication, registration number 10-0938345), the jib crane boom detects the rotation angle and inclination of the jib crane boom, respectively, detection result value The first rotation sensor and the inclination sensor for transmitting to the main management unit is further provided, The tower crane boom further detects the rotation angle of the tower crane boom and transmits the detection result value to the main management unit further The main management unit is provided with GPS coordinates of each crane received from the GPS receiver, rotation angle and inclination information of the jib crane boom calculated through the GPS values received from the first GPS unit, and received from the second GPS unit. Rotation angle information of the tower crane boom calculated by the GPS value, the rotation of the jib crane boom received from the first rotation sensor and the tilt sensor Preventing a collision between the cranes by inserting degrees and inclination information and rotation angle information of the tower crane boom received from the second rotation sensor into 3D model shapes of the corresponding cranes respectively stored in advance. And monitoring system.

      In addition, as another conventional technology, "a crane warning device" (Registration Utility Model Publication, Registration No. 20-0308812) discloses a crane alarm device to prevent the damage of the crane due to the collision. This includes a proximity sensor for detecting that the hook fixing block is approached a predetermined distance to the tip of the boom assembly, a relay unit for receiving an output signal when the predetermined signal is output by the detection of the proximity sensor, and switching on and off the relay unit. Alarm means for informing the driver by the on / off operation is provided. The proximity sensor is composed of a structure comprising a magnetoresistive element in which the element resistance increases when the hook fixing block approaches, and a transistor driven when the element resistance of the magnetoresistive element increases by a predetermined value. At this time, the alarm means is a horn driven by the on, off operation of the relay unit. Such an alarm device detects that the hook fixing block is near the tip of the boom assembly by the proximity sensor, so that the driver detects this in advance and stops the winch from driving, thereby preventing damage due to a collision. It is described.

      Such prior arts rely on sensors to limit the flow angle and collision of cranes.

      However, the sensor of the crane may cause errors and failures due to sensor interference with other machines and dust, rain, etc. according to the surrounding environment, and the conventional anti-collision systems lack a function to prepare for malfunction and failure of the sensor. There was a problem.

Therefore, the present invention has been made to solve the above problems, the present invention has a structure that can respond to the external shock by itself, it is possible to prepare for malfunction and failure of the limit sensor and also to prevent the reliable crane boom collision It is to provide a stopper device.

The present invention relates to a crane boom collision preventing stopper device, characterized in that the stopper device 21 is installed on the a frame of the crane, preventing or mitigating the collision between the a frame 13 and the boom 1.

The present invention relates to a crane boom collision prevention stopper device, the crane boom collision prevention stopper device is installed in the A frame supporting the boom, considering the malfunction and failure of the existing limit sensor, structurally self-mitigation It has a function and has a remarkable effect of preventing damage to human and physical property due to the risk of various accidents.

1 is a side view of a crane
2 is a side view of the crane boom anti-collision stopper device
3 is a front view of the crane boom anti-collision stopper device
Figure 4 is an enlarged side view of the shock absorber attached to the impact member of Figure 2
5 is a perspective view of the crane boom anti-collision stopper device

The present invention relates to a crane boom anti-collision stopper device, which is provided with a stopper device (21) in the a frame 13 of the crane, to prevent or mitigate the collision between the a frame 13 and the boom (1) of the crane. It is characterized by.

’형상인 것을 특징으로 한다.In addition, the stopper device 21 is composed of the upper frame 10 and the lower frame 11, the overall vertical cross-sectional shape '

It is characterized by the shape.

      In addition, the crane boom (1) is characterized in that the buffer frame 20 is installed in a position corresponding to the stopper device (21).

      In addition, the end of the upper frame 10 and the end of the buffer frame 20 attached to the boom is characterized in that the elastic members (18, 19) are attached.

      Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of a crane, FIG. 2 is a side view of a crane boom anti-collision stopper device, FIG. 3 is a front view of a crane boom anti-collision stopper device, and FIG. 4 is an enlarged side view of a shock absorber with a collision member of FIG. 5 is a perspective view of a crane boom anti-collision stopper device.

    The present invention relates to cranes used on land and at sea. Generally, a crane refers to a machine that lifts a heavy object and moves it in a vertical or horizontal direction, and is classified into a tower crane, a gantry crane, a jib crane, and the like according to its function and shape.

      The crane superstructure can be applied differently depending on the need, such as the working environment, the present invention takes the most commonly used jib crane as an example.

      The jib crane is a boom that is moved to move the heavy material greatly, a machine room for adjusting the flow of the boom, a portal portion installed at the lower portion of the machine room to support the machine room with a constant height, and to enable the operation of the crane itself It includes a running portion.

      In general, cranes are equipped with a system for preventing collisions with booms and a-frames and other facilities. In the related art, the flow angle and the collision limit of the crane boom are relied on the limit sensor. In addition, since the limit sensor can grasp the position without directly contacting the detection target, there is no friction or damage, so the life is long and the human and physical property damage caused by the risk of various accidents can be reduced, as well as reliability of the product. Increase it. However, the sensor of the crane has the possibility of error, such as errors and failures due to dust, rain, etc. according to the surrounding environment and sensor cross-talk with other machines.

And if an accident such as a sensor crosstalk occurs and the boom hits the machine room directly, the mechanical damage and human injury are great due to the enormous impact energy.

      The crane boom collision preventing stopper device of the present invention has a shock absorber and a structure that can absorb shock energy effectively, thereby reducing the impact even when a collision occurs, thereby preventing damage to the a frame and the boom.

     The stopper device is installed such that a vertical cross-sectional shape becomes a triangular shape with a part of the A-frame as the bottom surface. And the upper frame of the triangular shape is formed longer than the lower frame.

’형상이 된다. 상기 스토퍼장치는 에이프레임을 이루는 재질과 동일하게 철, 스틸 등으로 이루어진다.Therefore, the upper frame is located in the shape that the end portion extends from the butt point when the frames are butted, the overall stopper device is'

'Shape. The stopper device is made of iron, steel, or the like as a material forming the A frame.

      In addition, when the boom and the stopper device approaches a predetermined distance, the boom collides with the end of the upper frame of the stopper device, and a shock absorber is required to effectively absorb the impact energy caused by the collision.

      Accordingly, a buffer member having a plurality of buffer tubes is attached to the inside of the end of the upper frame of the stopper device, and cushioned at a predetermined position of the boom corresponding to the end of the upper frame of the stopper device when the boom and the stopper device collide with each other. The frame is attached.

      In addition, the primary shock absorption is achieved by installing a plurality of shock absorbing tubes having good restoring elasticity in a predetermined section of the stopper device frame in order to improve the shock buffering effect. This deflection allows buffering.

      The buffer frame formed on the boom corresponding to the end of the upper frame has a smaller diameter than the upper frame of the stopper device so that the buffer frame of the boom enters into the upper frame of the stopper device when the boom and the stopper device collide with each other. The material of this shock absorbing frame is made of iron, steel, etc. like the stopper device.

      Referring to Figure 4, both ends of the buffer member formed in the upper plate to absorb the direct collision by placing the buffer tube in front and a plurality of buffer tubes in the middle portion, the plurality of side-side buffer tube when a collision occurs Reciprocates back and forth inside the frame and acts as a shock absorber by spring action.

      The buffer tube uses a commonly used NR material.

      In addition, the elastic member of the NR material is also attached to the end of the upper frame and the end of the buffer frame attached to the boom to prevent the direct destruction of the stopper device to extend the life of the stopper device, but the end of the upper frame The elastic member attached to the portion is formed with a hole so that the buffer frame of the boom can be inserted.

      Therefore, the crane boom anti-collision stopper device of the present invention can not only reduce human and physical property damage caused by the risk of various accidents, but also improve the reliability of the product.

      In addition, the crane boom collision stopper device is installed in the A-frame supporting the boom in consideration of the malfunction and failure of the existing limit sensor, structurally has its own collision mitigation function and human due to the risk of various accidents In addition, there is a significant effect of preventing damage to property.

1: boom 2: machine room
3: Portal Tower 4: Portal Girder
5: driving unit 10: upper frame
11: underframe
13: Aframe 14: collision absorbing material
15: Point where upper frame and lower frame meet
16: buffer tube 18, 19: elastic member
20: buffer frame 21: stopper device

Claims (4)

In the crane boom collision prevention stopper device which installs the stopper apparatus 21 in the a frame 13 of a crane, and prevents or alleviates the collision of the a frame 13 of the crane with the boom 1,
The stopper device 21 is composed of the upper frame 10 and the lower frame 11, the overall vertical cross-sectional shape '

'Shape,
In the crane boom 1 also installs a buffer frame 20 corresponding to the stopper device 21,
Elastic members 18 and 19 are attached to the end of the upper frame 10 and the end of the buffer frame 20 attached to the boom 1.
In addition, the buffer frame formed on the boom is formed smaller in diameter than the upper frame of the stopper device, the buffer frame formed on the boom enters into the upper frame of the stopper device when the boom and the stopper device collides,
A plurality of buffer tubes are built into the upper frame of the stopper device, so that a primary shock is absorbed, and when a shock exceeding this is applied, the stopper device frame is secondly curved to perform a buffering function. Crane Boom Anti-collision Stopper Device delete delete delete

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