JP4698409B2 - Concrete structure crusher - Google Patents

Description

  The present invention relates to a crushing apparatus suitable for crushing a concrete structure such as a hollow tower-like concrete structure such as a chimney or a concrete wall of a high-rise building.

  Conventionally, as a crushing device for dismantling a high-rise concrete structure such as a chimney, one disclosed in Patent Document 1 is known, for example. This concrete structure crushing device is equipped with a power supply unit such as an engine, a generator, a hydraulic pump, a control panel, wireless communication means, etc., on a stand suspended by a crane, and a television camera for monitoring the crushing state. In addition, a swivel frame is pivotally attached to the lower surface of the base so as to be pivotable in the horizontal direction, and a main body having a pair of crushing blades operated by a hydraulic cylinder on the lower surface of the swivel frame via a bracket. A structure having a suspended structure is known.

The crushing device is lifted by a crane, and the turning frame and crushing blade are operated by remote control by radio control from the ground, and the crushing status of a concrete structure such as a chimney that is pinched and crushed by the crushing blade is television set. The operation of the crushing blade is controlled while taking an image with a camera and monitoring on the ground side, and the concrete structure is dismantled.
Japanese Patent Publication No. 5-29747

  However, when a concrete structure having a certain thickness is crushed by sandwiching the inner and outer surfaces of the structure with the pair of crushing blades, since the concrete structure is hard but brittle, the cutting edges of these crushing blades are the inner parts of the concrete structure. When a certain amount of clamping pressure necessary for crushing the concrete structure is applied from the state where each of the concrete structures has bitten into the outer surface, the concrete structure is in a crushing form that leads to breakage at once in the thickness direction.

  For this reason, the concrete structure side resistance force that opposes the crushing force of the crushing blade at the moment when the concrete is destroyed, i.e., the crushing blade that is opposed to the crushing blade immediately after the stress is released and destroyed. The blade edges are rapidly actuated in a direction narrowed by the pressing force of the hydraulic cylinder, and the blade edges collide with each other to generate a large impact force in a direction to push up the crushing blades upward. In particular, this phenomenon appears remarkably when the concrete strength of the concrete structure is high. The thrust generated by the collision between the crushing blades is shocked by a power supply unit such as an engine, a control panel, and a base equipped with wireless communication means via a bracket that supports the crushing blades. There is a problem that a precision instrument such as a control panel is damaged by the impact force and the crushing operation cannot be performed thereafter.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a facility mounting base that supports these crushing blades when crushing a concrete structure with a pair of crushing blades. An object of the present invention is to provide a crushing device for a concrete structure that prevents the impact force generated at the time of crushing from being directly transmitted to the upper control panel, the radio operation unit, and the like, thereby preventing the equipment from being damaged by the impact force.

In order to achieve the above object, a concrete structure crushing apparatus according to the present invention is suspended from a boom of a crane as described in claim 1, and is operated wirelessly by a drive part of an engine or a hydraulic pump and these drive parts. The crushing unit body is pivotally attached to the lower surface of the equipment mounting base equipped with equipment such as a control unit so as to be able to rotate in the horizontal direction, and the lower surface of the swivel frame absorbs the impact force during crushing. clamping the concrete structure on both sides of and operated by the drive unit, the crushing device of the concrete structure which is formed by Tsu支 the crushing part having a pair of left and right crush blades for crushing, the buffer unit, both sides And the upper mounting bracket formed by fixing the connecting plate piece between the lower end surfaces of these leg pieces, and the leg pieces projecting upward on both sides. With these legs A lower mounting bracket with a connecting plate piece fixed between the upper end surfaces of the upper and lower ends, and an upper and lower end portion inserted through an insertion hole provided in the center of the connecting plate piece of the upper and lower mounting bracket so as to be movable up and down. A rod, a nut body screwed into the upper end portion of the connecting rod inserted through the insertion hole of the upper connecting plate piece and having its lower surface received on the upper surface of the upper connecting plate piece, and a lower connection A nut body screwed into the lower end portion of the connecting rod inserted through the insertion hole of the plate piece and the upper surface of which is locked to the lower surface of the lower connecting plate piece, and wound around the connecting rod It consists of coil springs intervened in a compressed state between the opposing surfaces of the upper and lower connecting plate pieces, and a pair of this buffering part is arranged on the left and right sides at the one side and the other side of the swivel frame and the crushing part main body. The upper and lower mounting brackets are pivotally attached to the upper and lower opposing surfaces .

  According to the first aspect of the present invention, a pair of sandwiching and crushing the concrete structure on the lower surface of the equipment mounting base on which equipment such as the engine and hydraulic pump drive units and the wireless operation control unit of these drive units is mounted. A crushing section equipped with a crushing blade is arranged, and the equipment mounting base is suspended from the boom of the crane, and the crushing blade crushes high-rise concrete structures such as chimneys while operating the drive unit by wireless communication In the crushing apparatus, since the buffer part that absorbs the impact force during crushing is interposed and connected between the equipment mounting table and the crushing part, a hard and brittle concrete structure is sandwiched by a pair of crushing blades, When crushing, the crushing blades are instantly closed by releasing the stress immediately after the destruction of the concrete structure and collide with each other, and push the reaction structure against the top crushing surface of the concrete structure. However, before the impact force due to this push-up is transmitted to the lower surface of the equipment mounting table, it is absorbed by the buffering part interposed and connected between the equipment mounting table and the crushing part and transmitted to the equipment mounting table. Therefore, precision equipment such as a control panel and wireless operation control unit installed on the equipment mounting base is not affected by the impact force and exerts a predetermined function to provide a concrete structure. The object can be smoothly crushed.

Furthermore, since the swivel frame is rotatably mounted on the lower surface of the equipment mounting base, and the swivel frame and the crushing part are connected via the buffering part, the direction of the holding direction by the pair of crushing blades is controlled by the swivel frame. The crushing operation can be performed efficiently while changing easily and accurately according to the portion of the concrete structure to be crushed, and even if the swivel frame is swung, the buffering portion is interposed between the swivel frame and the crushing portion. Since they are connected, it is possible to prevent the impact force generated at the time of crushing from being always absorbed by the impact portion and transmitted to the equipment mounting base.

Further, the buffer portion has leg piece portions projecting downward on both side portions and an upper mounting bracket formed by fixing a connecting plate piece between the lower end surfaces of these leg piece portions, and on both side portions. Provided at the center of the connecting plate pieces of the lower mounting bracket and the upper and lower mounting brackets, with the leg piece portions protruding upward and the connecting plate pieces fixed between the upper end surfaces of these leg piece portions The upper and lower ends of the connecting rod are inserted into the insertion hole so that the upper and lower ends can be moved up and down, and the upper end of the connecting rod inserted through the insertion hole of the upper connecting plate piece is screwed into the lower surface of the upper connecting portion. The nut body received on the upper surface of the plate piece and the lower end portion of the connecting rod inserted through the insertion hole of the lower connecting plate piece are screwed together so that the upper surface is brought into contact with the lower surface of the lower connecting plate piece. From the nut body to be locked and the coil spring wound around the connecting rod and intervened in a compressed state between the opposing surfaces of the upper and lower connecting plate pieces Ri, pair the buffer portion, so by disposing the left and right are respectively pivotally mounted to upper and lower mounting bracket in the vertical facing surfaces of the one side and the other side of the crushing part main body and the rotating frame, a pair of left and right The crushing part body equipped with a crushing blade can be suspended in a stable state at a certain distance from the lower surface to the lower surface of the revolving frame via a connecting rod. It is possible to easily set the clamping position of the crushing blade with respect to the concrete structure by operation, and to absorb the impact force generated during crushing easily and reliably by the elastic contraction of the coil spring.

In addition, a pair of upper and lower mounting brackets are pivotally mounted on both sides of the opposing surface of the swivel frame and the crushing section main body, and the lower mounting bracket is suspended from the upper mounting bracket so as to be vertically movable by the connecting rod. In addition, since the structure is a buffer portion in which a coil spring is interposed between the upper and lower mounting brackets in a compressed state, a buffer portion in which a connecting rod and a coil spring are disposed between a pair of upper and lower mounting brackets. Is disposed between one side and the other side of the facing surface of the swivel frame and the crushing part main body. It is possible to reliably prevent unintentional rocking and to maintain a stable suspension state at all times, and to set the crushing position of the crushing blade smoothly during crushing, and to dismantle the concrete structure Do efficiently Door can be.

  Furthermore, this buffer portion can be incorporated into a conventional lifting concrete structure crushing device and can be easily improved to a crushing device having a buffering function during crushing.

  Next, a specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a crushing device for a concrete structure A. This crushing device is suspended from a boom B of a crane C and is crushed. Equipment mounting base 1 on which various equipment for operating the equipment is mounted, a revolving frame 2 mounted on the lower surface of the equipment mounting base 1, and a crush suspended from the revolving frame 2 via a buffer 3 It consists of the part 4, and it is comprised so that the concrete structure A may be pinched and crushed by this crushing part 4. FIG.

Specifically, on the equipment mounting table 1, equipment such as an engine 10, a hydraulic pump 11, a hydraulic motor 12, a generator 13, a capacitor 14, a wireless communication unit / wireless operation control unit 15, an antenna 16, and the like are mounted. In addition, a water tank 17 and a water pump 18 for supplying water in the water tank 17 to a water jet nozzle (not shown) disposed on the crushing part 4 side through a pipe (not shown) are installed. A suspension jig 19 is mounted on the equipment mounting base 1 and a wire 20 suspended from the hook c of the crane C is attached to the upper end of the suspension jig 19 .

  The revolving frame 2 has a rotation center shaft 5 standing and fixed at the center of the upper surface thereof, rotatably inserted into and supported by the center of the equipment mounting base 1, and a pinion rotated by the hydraulic motor 12. And rotating in the forward / reverse direction under the lower surface of the equipment mounting base 1 via a meshing gear mechanism (not shown) consisting of the rotation center shaft 5 and a large-diameter gear fixed in the revolving frame 2. The arm member 6 protrudes from one side of the outer peripheral surface of the outer peripheral surface, and a television camera 7 for monitoring the crushing state by the crushing portion 4 is attached to the tip of the arm member 6.

  Further, the crushing part 4 is an intermediate in the longitudinal direction of a pair of left and right crushing blades 4B and 4C for pressing and crushing the concrete structure A on both sides of the lower end of the crushing part main body 4A made of a vertically long rectangular vertical plate or frame. The shaft is pivotally attached to the shafts 8 and 8 and the upper ends of the crushing blades 4B and 4C are connected by a hydraulic cylinder 9 to expand and contract the rod of the hydraulic cylinder 9. Centering on the shafts 8 and 8, the cutting edge portions 4 b and 4 c protruding from the opposing surfaces of the lower end portions of the crushing blades 4 B and 4 C are configured to be operated in the approaching and separating directions.

  In addition, the cutting edge portions 4b and 4c of the crushing blades 4B and 4C protrude from the lower end and the lower end facing surface with a small gap upward from the lower end, and the pivot 8 in one crushing blade 4B. Reinforcing bar cutting blade 4b 'is fixed to the lower portion of the steel plate, and the reinforcing bar cutting blade 4b' and the reinforcing bar cutting blade 4c 'fixed to one side of the lower end surface of the crushing part main body 4A are used for the concrete structure A. It is configured to cut the rebar. Moreover, although not shown in figure, the said water injection nozzle which injects water toward the part to be crushed of the concrete structure A which should be crushed is mounted in either one of these crushing blades 4B and 4C.

  Further, the buffer parts 3 and 3 are interposed between one side and the other side of the lower surface of the swivel frame 2 and the upper surface of the crushing part main body 4A, and the upper and lower ends of the buffer parts 3 and 3 are swung. The shock absorbers 3 and 3 absorb the impact force generated when the concrete structure A is crushed by the pair of crushing blades 4B and 4C connected to both sides of the opposing surface of the frame 2 and the crushing body 4A. Thus, it is not directly transmitted to the revolving frame 2 side.

  As shown in FIG. 2, the shock absorber 3 has a specific structure in which a pair of upper and lower mounting brackets 3c and 3d are connected to the lower mounting bracket 3c by connecting the mounting brackets 3c and 3d. The connecting rod 3b that suspends the metal fitting 3d so as to be movable in the vertical direction, and is wound around the connecting rod 3b with a gap therebetween, and in a compressed state between the opposing surfaces of the mounting metal fittings 3c, 3d. The coil spring 3a is interposed. In the figure, 3g is a flexible protective cover having upper and lower ends fixed to the outer peripheral portions of the opposing surfaces of the upper and lower mounting brackets 3c and 3d.

  The upper mounting bracket 3c is formed in a front downward U-shape with a mounting hole 3c1 at the center of the upper end and leg pieces 3c2, 3c2 of a certain length projecting downward on both sides. In addition, a connecting plate piece 3c4 provided with an insertion hole 3c3 through which the upper end of the connecting rod 3b is vertically inserted is fixed between the lower end surfaces of the leg pieces 3c2 and 3c2. The upper mounting bracket 3c is pivotally supported and supported by a bracket 2a projecting downward from the lower surface of the revolving frame 2 through the mounting hole 3c1, and the insertion of the connecting plate piece 3c4 is performed. A nut body 3e is screwed into the upper end screw portion of the connecting rod 3b inserted through the hole 3c3, and the lower surface of the nut body 3e is received by the upper surface of the connecting plate piece 3c4.

  Similarly, the lower mounting bracket 3d is formed with a mounting hole 3d1 in the center of the lower end and a front upward-facing joint with leg pieces 3d2 and 3d2 having a fixed length projecting upward on both sides. A connecting plate that is formed in a letter shape and that has an insertion hole 3d3 between the upper end surfaces of the leg piece portions 3d2 and 3d2 that allows the lower end portion of the connecting rod 3b to be vertically moved through the center portion. A piece 3d4 is fixed, and this lower mounting bracket 3d is pivotally attached to and supported by a bracket 4a projecting upward from the upper surface of the crushing part main body 4A through its mounting hole 3d1. A nut body 3f is screwed into the lower end screw portion of the connecting rod 3b inserted through the insertion hole 3d3 of the plate piece 3d4, and the upper surface of the nut body 3f is locked to the lower surface of the connecting plate piece 3d4.

  A coil spring 3a is disposed in a compressed state between the opposing surfaces of the connecting plate pieces 3c4 and 3d4 of the upper and lower mounting brackets 3c and 3d, and the upper and lower end surfaces of the coil spring 3a are crimped to the opposing surfaces of the connecting plate pieces 3c4 and 3d4. In the normal state, the upper and lower nut bodies 3e and 3f are engaged with the upper and lower surfaces of the connecting plate pieces 3c4 and 3d4, respectively, so that the upper and lower mounting brackets 3c and 3d are held in a state where they are separated as much as possible. A pair of shock absorbers 3 and 3 configured in this way are arranged on the left and right, and one of the shock absorbers 3 is interposed between one side of the upper and lower opposing surfaces of the revolving frame 2 and the crushing body 4A and attached vertically. The metal fittings 3c and 3d are connected to the brackets 2a and 4a on one side, and the other buffer part 3 is interposed between the other side parts of the revolving frame 2 and the crushing part main body 4A on the upper and lower sides thereof, 3c and 3d are connected to brackets 2a and 4a on the other side, and the crushing part main body 4A is suspended from the lower surface of the revolving frame 2 via these buffer parts 3 and 3.

  Further, the hydraulic pump 11 mounted on the revolving frame 2 is connected to and communicated with a hydraulic cylinder 9 for operating the pair of left and right crushing blades 4B and 4C in an opening / closing direction via a pipe (not shown). . Furthermore, the generator 13 supplies power to the wireless communication unit / wireless operation control unit 15, the television camera 7, and the like. The connecting rod 3b in the buffer portion 3 may have a structure in which either one of the upper and lower ends thereof is supported by one of the upper and lower mounting brackets 3c and 3d so as to be movable up and down and the other is fixed.

  The concrete structure crushing apparatus constructed as described above is a high-rise structure in which a wire 20 connected to the upper four corners of the hanging jig 19 is hooked on the lower end hook c of the crane C as shown in FIG. The concrete structure A is lifted up to a place to be dismantled. At this time, the nut bodies 3e and 3f screwed to the upper and lower ends of the connecting rod 3b in the buffer portion 3 are engaged with the connecting plate pieces 3c4 and 3d4 of the upper and lower mounting brackets 3c and 3d, and the crushing portion 4 is turned into the turning frame. 2 is held in a suspended state at a predetermined position below. In this state, the engine 10 is operated wirelessly from the ground to drive the engine 10 via the antenna 16 to start the hydraulic pump 11 and drive the generator 13.

Then, when the pair of crushing blades 4B, 4C of the crushing unit 4 reaches a position to be disassembled, a turning frame is remotely operated by an operator while confirming the image of the crushing unit 4 sent through the monitoring camera 12 on the ground. 2 is appropriately rotated according to the position and shape of the concrete structure A to be crushed, and the crushed blades 4B and 4C are suspended by the solid line in FIG. As shown, the concrete structure A is made to face each other through a portion to be crushed in the upper end portion. At this time, since the crushing part 4 is suspended from the revolving frame 2 via the pair of left and right buffer parts 3 and 3, when the revolving frame 2 is rotated in the horizontal direction, the pair of buffer parts 3, 3, the crushing part 4 can be easily and accurately rotated integrally with the revolving frame 2 according to the degree of rotation of the revolving frame 2, and the pair of crushing blades 4B and 4C can be connected to the concrete structure A. It can be smoothly positioned on the part to be crushed.

In this state, when the hydraulic cylinder 9 connecting the upper ends of the crushing blades 4B and 4C is extended by remote operation, the lower ends of the crushing blades 4B and 4C approach and close to the cutting edge 4b, 4c sandwiches the portion of the concrete structure A to be crushed, and the blade edges 4b and 4c bite into the portion to be crushed and cause cracks to rotate in directions that approach each other about the pivots 8 and 8 as fulcrums. Then, the portion to be crushed of the concrete structure A is destroyed. When the concrete structure A is crushed by the crushing blades 4B and 4C, water is supplied from the water tank 17 on the equipment mounting base 1 to a water injection nozzle (not shown) mounted on one crushing blade 4B. By spraying water toward the crushing part, dust at the time of crushing is prevented from scattering.

  In this way, the concrete structure A is dismantled toward the lower end by opening and closing the crushing blades 4B and 4C while hanging the crushing part 4, but the concrete structure is hard but fragile. When the concrete structure A is clamped from the state in which the cutting edge portions 4b and 4c of the crushing blades 4B and 4C have bitten into the inner and outer surfaces of the concrete structure, before the cutting edge portions 4b and 4c abut each other. Concrete structure A will be destroyed.

  When this destruction occurs, the crushing blades 4B and 4C are operated by the hydraulic cylinder 9 in a direction approaching each other with a constant clamping pressure, but on the side of the concrete structure A facing the clamping pressure. The resistance force, that is, the stress disappears instantaneously and is released, so that the cutting edge portions 4b and 4c of the crushing blades 4B and 4C facing each other with a small interval immediately after the destruction are between the cutting edge portions 4b and 4c. The gap portion of the concrete structure A is instantaneously and rapidly actuated in the direction narrowed by the pressure of the hydraulic cylinder 9 so that the blade edge portions collide as shown by phantom lines in FIG. As a result, the crushing portion 4 is pushed up toward the upper space portion of the destruction mark.

  The impact force due to this push-up is transmitted to the buffer parts 3 and 3 which connect the lower end parts to both sides of the upper end bracket 4a of the crushing part 4, and the lower mounting bracket 3d of these buffer parts 3 and 3 The coil spring 3a press-fitted between the lower mounting bracket 3d and the upper mounting bracket 3c mounted on both sides of the lower surface of the swivel frame 2 is moved upward while compressing, and the impact force is absorbed by the compression of the coil spring 3a to mount the above equipment. This prevents transmission to the table 1 side. Therefore, the wireless communication unit / wireless operation control unit 15 and the like installed on the equipment mounting base 1 are not affected by the impact force, and the predetermined function is performed so that the concrete structure can be crushed for a long time. It can be performed smoothly.

The front view of the crushing apparatus of a concrete structure. The enlarged front view which carried out the cross section of a part of buffer part.

A Concrete structure C Crane 1 Equipment mount 2 Swivel frame 3 Buffer part
3a Coil spring
3b connecting rod
3c, 3d Vertical mounting bracket 4 Crushing part
4A Crusher body
4B, 4C Crushing blade 9 Hydraulic cylinder

Claims (1)

A swivel frame is pivotally attached to the lower surface of the equipment mounting base that is suspended from the boom of the crane and is equipped with equipment such as engine and hydraulic pump drive units and wireless operation control units for these drive units. The lower surface of the swivel frame is provided with a pair of left and right crushing blades that are operated by the drive unit on both sides of the crushing part main body through a buffer part that absorbs impact force during crushing to clamp and crush the concrete structure. In the concrete structure crushing apparatus in which the crushing part is suspended , the buffer part has a leg piece projecting downward on both sides and a connecting plate between the lower end surfaces of these leg piece parts. An upper mounting bracket formed by fixing pieces, and a lower mounting bracket formed by protruding leg piece portions upward on both sides and a connecting plate piece fixed between upper end surfaces of these leg piece portions. And provided at the center of the connecting plate piece of the vertical mounting bracket The upper and lower ends of the connecting rod inserted through the insertion hole and the upper end of the connecting rod inserted through the insertion hole of the upper connecting plate piece, and the lower surface thereof is connected to the upper connecting plate. The nut body received on the upper surface of the piece and the lower end portion of the connecting rod inserted through the insertion hole of the lower connecting plate piece are screwed to engage the upper surface with the lower surface of the lower connecting plate piece. A nut body that is stopped, and a coil spring that is wound around the connecting rod and intervenes in a compressed state between the opposing surfaces of the upper and lower connecting plate pieces, and a pair of the buffer portions are arranged on the left and right sides to A crushing device for a concrete structure, wherein the upper and lower mounting brackets are pivotally attached to upper and lower opposing surfaces of one side and the other side of the revolving frame and the crushing part main body, respectively .

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