Wire saw apparatus for excavators

Abstract

A wire saw apparatus for an excavator according to the present invention includes a support plate, an excavator connecting part attached to the support plate so as to be detachably attached to an excavator arm, a pair of guide rails attached to the support plate, an up-and-down movement member ascending or descending along the pair of guide rails, an electric motor for raising or lowering the up-and-down movement member, a drive pulley rotated by a hydraulic motor attached to the up-and-down movement member, a plurality of driven pulleys installed to the support plate, and a wire installed to the drive pulley and the plurality of driven pulleys.

Description

Technical Field

[0001] This invention relates to a wire saw device for excavators, and more specifically, to a wire saw device for installation on an excavator to cut rock, raw stone, concrete, metal, etc., in order to meet specifications according to purpose and application. Background Technology

[0002] In general, stone obtained through quarrying and processing raw stone is typically used in the construction industry as a building material for buildings and civil engineering projects, such as for building walls, curbs, sidewalk blocks, or building floors.

[0003] The stone is quarried from the rocky mountains by licensed operators into large rectangular blocks and transported to stone processing companies. At the stone processing companies, the stone is cut to the appropriate thickness and area and supplied as stone slabs or is cut again to meet specifications and surface treated.

[0004] For example, the jet burner mining method, which uses a jet burner, a drilling machine, and gunpowder, or the wire saw mining method, which uses a wiresaw, a drilling machine, and gunpowder, can be used as a method for quarrying raw stone from rocky mountains.

[0005] The jet burner mining method is classified as follows: a method of extracting the original stone (bedrock) by removing soil using equipment such as excavators, drilling holes in the original stone (bedrock) using air compressors and drilling machines (drills for drilling), filling the holes with gunpowder, and blasting the original stone; or a method in which the size of the original stone is determined when the bedrock is formed, using a jet burner (oil) to inject fire from an air-compressed vent to cut the opposite side of the bedrock along its longitudinal direction while burning the stone, drilling blasting holes vertically and horizontally on the uncut back and bottom of the original stone using rock drills (equipment for drilling blasting holes), filling the blasting holes with gunpowder, and blasting the original stone, wherein the original stone is divided into large pieces by size through drilling and blasting, and the separated original stone is further divided into smaller pieces.

[0006] The jet burner mining method has the following environmental problems: the use of large amounts of diesel fuel, which leads to air pollution and increased costs; the need to install large equipment and compressors separately, which generates a lot of noise; and the dispersion of stone dust by air pressure under high-pressure heat, which generates a large amount of dust.

[0007] On the other hand, the wire saw mining method is a method of determining the size of stone (bedrock), drilling vertical and horizontal holes using a longitudinal drilling machine so that the vertical and horizontal holes form an "L" shape, extending the wire saw through the drilled holes, and rotating the wire saw while using a traction machine to pull the two ends of the wire saw to cut the stone, wherein the uncut back and bottom of the original stone are drilled and blasted with gunpowder.

[0008] This wire saw cutting method has advantages such as minimizing environmental problems and noise generation, not using diesel (oil), and suppressing dust dispersion, but it also has problems such as harsh working conditions and cutting efficiency, which require a lot of time to mine.

[0009] In particular, the inconvenience of the wire saw method lies in the fact that a separate fixed pulley must be installed on the raw stone to be cut in the cutting direction, and in particular, a wire saw machine must be provided in order to cut the raw stone, which is inconvenient in operation.

[0010] In addition, the wire saw must be set in the direction of cutting the original stone, which is difficult and inconvenient. Summary of the Invention

[0011] Technical issues

[0012] The purpose of this invention is to provide a wire saw device for an excavator, which is configured such that the wire saw can rotate 360 ​​degrees, and even after the wire saw device is installed on the excavator, the wire saw body can still rotate via a linkage, thereby reducing the individual working time caused by reinstalling the wire saw while smoothly quarrying raw stone or cutting concrete.

[0013] Another object of the present invention is to provide a wire saw device for an excavator, which is configured such that when cutting or sawing raw stone, the wire tension is maintained by moving the drive pulley up and down according to the cutting speed, thereby achieving a smooth cut.

[0014] Technical solution

[0015] The wire saw device for an excavator according to the present invention, which achieves the above-mentioned objectives, comprises: a support plate; an excavator connection unit coupled to the support plate for removable connection to an excavator arm; a pair of guide rails coupled to the support plate; an upward and downward movement member configured to move upward and downward along the pair of guide rails; an electric motor configured to move the upward and downward movement member upward and downward; a drive pulley configured to be rotated by a hydraulic motor coupled to the upward and downward movement member; a plurality of driven pulleys mounted to the support plate; and wire mounted to the drive pulley and the plurality of driven pulleys.

[0016] The wire saw may also include a pair of auxiliary pulleys mounted on opposite sides of the front of the downward and downward moving members, the pair of auxiliary pulleys being configured to guide the movement of the wire.

[0017] The wire saw equipment may also include a lead screw rotatably mounted between the support plate and the pair of guide rails, wherein an electric motor can rotate the lead screw in both forward and reverse directions.

[0018] The wire saw may also include a support frame that extends upward from the upper surface of a support plate while being disposed on the opposite side of the pair of guide rails, wherein the pair of guide rails may be connected to the upper end portion of the support frame.

[0019] The electric motor can be installed in a control box located on the upper surface of the support frame so that it can be airtight.

[0020] The upward and downward moving components may include: a pair of track holes through which guide rails extend; and a screw hole into which a lead screw is inserted to engage with the screw hole.

[0021] The excavator connection unit may include: a fastening plate portion having a plurality of fastening holes formed therein, such that the mounting angle of the fastening plate portion on the support plate can be changed; a pair of bracket portions extending upward from the fastening plate portion; and a pair of connecting pins mounted at different heights between the pair of bracket portions for connection to the excavator arm.

[0022] The hydraulic hoses extending from the excavator can be connected to the hydraulic motor via a control box, and the wire saw equipment may also include a flow control device located in the control box, the flow control device being configured to control the flow rate of fluid flowing through the hydraulic hoses.

[0023] Beneficial effects

[0024] As is evident from the above description, the wire saw device for excavators according to the invention is configured to be easily and removably mounted to the excavator arm, thereby reducing the time required for wire saw installation.

[0025] In addition, the wire saw can rotate 360 ​​degrees via the excavator connection unit, which can effectively perform vertical and horizontal cutting (sawing).

[0026] In addition, the drive pulley moves up and down according to the sawing speed, which maintains the tension of the wire, thereby allowing for smooth cutting of concrete, rock, etc. Attached Figure Description

[0027] Figure 1 This is a front perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

[0028] Figure 2 This is a rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

[0029] Figure 3 This is a side perspective view showing a wire saw device for an excavator according to an embodiment of the present invention.

[0030] Figure 4 This is a partial perspective view showing the lower part of a wire saw device used on an excavator.

[0031] Figure 5 It is a partially enlarged 3D view of the upward and downward moving components of the wire saw equipment used in excavators.

[0032] Figure 6 This is a schematic diagram showing the configuration of the controller for a wire saw device used on an excavator. Detailed Implementation

[0033] This invention can be modified in various ways and can have several embodiments, and therefore specific embodiments will be illustrated and described in detail in the accompanying drawings. However, this invention is not limited to the specific embodiments, and it should be understood that this invention includes all alternatives, equivalents, and substitutions that fall within the concept and scope of this invention.

[0034] The terminology used in this invention is for describing specific embodiments only and is not intended to limit the invention. Unless otherwise stated, the singular form includes the plural form. It should be understood that the terms "comprising," "having," etc., indicate the presence of the features, numbers, steps, operations, elements, components, or combinations thereof stated herein, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0035] In the following, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. It should be noted that, wherever possible, identical elements are indicated by the same reference numerals in the drawings. Furthermore, detailed descriptions of known functions and configurations will be omitted where such descriptions might obscure the subject matter of the invention. In the drawings, for the same reasons, some elements are exaggerated, omitted, or schematically illustrated.

[0036] Figure 1 This is a front perspective view showing a wire saw device for an excavator according to an embodiment of the present invention. Figure 2 This is a rear perspective view showing a wire saw device for an excavator according to an embodiment of the present invention. Figure 3 This is a side perspective view showing a wire saw device for an excavator according to an embodiment of the present invention, and Figure 4 This is a partial perspective view showing the lower part of a wire saw device used on an excavator.

[0037] The wire saw device 100 for an excavator according to the present invention includes: a support plate 110; an excavator connection unit 120 coupled to the support plate for removable coupling to an excavator arm; a pair of guide rails 140 coupled to the support plate; an up-and-down movement member 160 configured to move up and down along the pair of guide rails; an electric motor 210 configured to move the up-and-down movement member up and down; a drive pulley 180 configured to be rotated by a hydraulic motor 170 coupled to the up-and-down movement member; a plurality of driven pulleys 190 mounted to the support plate; and a wire 101 mounted to the drive pulley and the plurality of driven pulleys.

[0038] The wire saw device 100 for excavators according to the present invention is a device that is removably connected to the excavator arm to cut rocks, raw stone, concrete, metal, etc. using a wire having diamond beads arranged at predetermined intervals on its outer peripheral surface.

[0039] The support plate 110 may be an approximately rectangular metal plate with a predetermined thickness. The support plate 110 serves as the base frame constructed to support the entire wire saw device 100.

[0040] The excavator connection unit 120 can be attached to the support plate 110 by using multiple bolts. A hook located at the end of the excavator arm can be captured by the excavator connection unit 120, allowing the wire saw device 100 to be removably attached to the excavator arm.

[0041] A pair of guide rails 140 can be welded or screwed to the upper surface of the support plate 110. The two guide rails 140 can be arranged to extend vertically from the upper surface of the support plate 110 and can be spaced apart from each other by a predetermined distance. Each guide rail 140 can be constructed as a circular tube with a smooth outer peripheral surface.

[0042] The support frame 130 extends upward from the upper surface of the support plate 110 while being disposed on the outside of the pair of guide rails 140. The support frame 130 may include: a pair of column frame portions vertically connected to the upper surface of the support plate 110 by welding; and an upper plate frame portion constructed as a rectangular plate horizontally connected to the upper end of the pair of column frame portions by welding. Therefore, the upper ends of the pair of guide rails 140 can be fastened or welded to the upper plate frame portion.

[0043] The upward and downward movement member 160 can be slidably mounted to the pair of guide rails 140 so as to move upward and downward along the pair of guide rails 140. For this purpose, the upward and downward movement member 160 can be provided with a pair of rail holes through which the pair of guide rails 140 are slidably inserted.

[0044] The upward and downward moving component 160 can be moved upward and downward by an electric motor 210. The electric motor 210 can be mounted above the upper plate frame portion of the support frame 130.

[0045] The drive pulley 180 can be mounted to be rotated by a hydraulic motor 170, which is connected to the upward and downward moving member 160. For example... Figure 3 As shown, motor bracket 163 can be connected to the upper front portion of the upward and downward movement member 160 for extension, and hydraulic motor 170 can be mounted to motor bracket 163. The rotation shaft of hydraulic motor 170 can be connected to drive pulley 180 to allow drive pulley 180 to rotate in both forward and reverse directions. A pair of hydraulic hoses connected to the excavator's hydraulic pump can be connected to hydraulic motor 170, allowing hydraulic motor 170 to be operated by the excavator.

[0046] Multiple driven pulleys 190 can be mounted to the front of the support plate 110. For this purpose, a pulley mounting portion 114, constructed in the form of a quadrilateral tube, can be connected to the front surface of the support plate 110, and the multiple driven pulleys 190 can be rotatably mounted to the pulley mounting portion 114. In the illustrated embodiment, the multiple driven pulleys 190 may include two driven pulleys disposed on the left front side of the support plate 110 and spaced apart from each other by a predetermined distance, and two driven pulleys disposed on the right front side of the support plate and spaced apart from each other by a predetermined distance.

[0047] A wire 101 of predetermined length and equipped with diamond beads can be mounted to a drive pulley 180 and a plurality of driven pulleys 190. The wire 101 can be rotated by the drive pulley 180 and the plurality of driven pulleys 190 to cut an object.

[0048] Preferably, a pair of auxiliary pulleys 185 are included, which are mounted to opposite sides of the front of the upward and downward moving member 160 to guide the movement of the wire 101. Figure 3 As shown, the pulley bracket 165 can be connected to the lower front portion of the upward and downward movement member 160 for extension, and the pair of auxiliary pulleys 185 can be rotatably mounted to the opposite side of the front surface of the pulley bracket 165.

[0049] like Figure 1As shown, the drive pulley 180 can be formed to be much larger than the auxiliary pulley 185 and the driven pulley 190. The wire 101 wound on the upper part of the drive pulley 180 can extend downward in sequence through the inner driven pulley 190, the auxiliary pulley 185 and the outer driven pulley 190. The downwardly extending wire 101 is configured to enclose the object to be cut, and when the upward and downward moving member 160 moves upward, the drive pulley 180 and the auxiliary pulley 185 can also move upward to keep the wire 101 taut.

[0050] Furthermore, a cover member 164 configured to enclose the drive pulley 180 can be mounted above the drive pulley 180. For example... Figure 3 As shown, the cover member 164 can be coupled to the motor bracket 163 for securing to the motor bracket 163. During operation, water or oil can be sprayed onto the drive pulley 180 to cool the drive pulley 180 and the wire 101 and remove foreign objects, and the cover member 164 can prevent water or oil containing foreign objects from splashing around the drive pulley 180.

[0051] like Figure 1 and Figure 2 As shown, the lead screw 150 can be rotatably mounted between the support plate 110 and a pair of guide rails 140. The lead screw 150, having a square or trapezoidal thread formed on the outer peripheral surface of the rotating shaft, can be disposed between the pair of guide rails 140. The lower end of the lead screw 150 can be mounted to a bearing disposed on the upper surface of the support plate 110, the upper portion of the lead screw 150 can be mounted to a support bearing mounted between the pair of guide rails 140, and the upper end of the lead screw 150 can be connected to the electric motor 210 through the upper plate frame portion of the support frame 130. The electric motor 210, being a motor capable of both forward and reverse rotation, can rotate the lead screw 150 forward and reverse to move the upward and downward movement member 160, as well as the hydraulic motor 170 and drive pulley 180 connected to the upward and downward movement member 160, upward and downward.

[0052] like Figure 2 As shown, the electric motor 210 can be directly connected to the lead screw 150, but the reducer 220 can be connected to the electric motor 210 and the lead screw 150 can be connected to the reducer 220. The reducer 220 reduces the rotational speed of the electric motor 210, allowing a relatively small input torque to be input to the electric motor 210 so that the lead screw 150 rotates with a larger output torque.

[0053] The electric motor 210 can be mounted in a control box 200 located on the upper surface of the support frame 130 for hermetical sealing. The control box 200 can be constructed as a cuboid and can be fastened or welded to the upper surface of the upper frame portion of the support frame 130. The control box 200 may have a through-hole on its lower surface through which the rotation shaft of the electric motor 210 extends. Figure 1 and Figure 2 As shown, the control box 200 may include a box body 201 having an open front surface and an open rear surface, and a front cover 203 and a rear cover 205 may be respectively connected to the open front surface and the open rear surface of the box body 201 by means of a plurality of screws. Furthermore, a lifting ring portion 207 may be integrally formed at the upper end of the rear surface of the box body 201. The hook of a crane may be captured by the lifting ring portion 207, thereby allowing the wire saw device 100 to be lifted and moved.

[0054] Figure 5 It is a partially enlarged 3D view of the upward and downward moving components of the wire saw equipment used in excavators.

[0055] The upward and downward moving member 160 may include a pair of track holes and a screw hole, through which a pair of guide rails 140 extend, and a guide screw 150 is inserted into the screw hole to engage with it. The pair of track holes may be configured to enclose a pair of guide rails 140 respectively, and the screw hole may be formed in a support portion integrally formed between the two track hole forming portions. The support portion may be provided with multiple reinforcing ribs integrally connected between the two track hole forming portions and the screw hole forming portion.

[0056] Each guide hole is formed with a smooth inner circumferential surface, whereby the screw hole has threads on its inner circumferential surface corresponding to the threads of the guide screw 150. Therefore, when the guide screw 150 rotates, the upward and downward moving member 160 can move upward and downward via the guide screw 150 and can be supported by a pair of guide rails 140 so as not to rotate. When the rotation of the guide screw 150 stops, the upward and downward moving member 160 can be supported by the threads of the guide screw 150 so as not to move downward from its height, thereby maintaining the position of the upward and downward moving member.

[0057] like Figure 4As best observed, the excavator connection unit 120 may include: a fastening plate portion 121 having a plurality of fastening holes formed therein, such that the mounting angle of the fastening plate portion on the support plate 110 can be changed; a pair of bracket portions 123 extending upward from the fastening plate portion; and a pair of connecting pins 125 mounted at different heights between the pair of bracket portions for connection to the excavator arm.

[0058] The fastening plate portion 121 is constructed in the form of a disc, and four or more fastening holes are formed through it. The support plate 110 is also provided with four or more fastening holes corresponding to the fastening holes of the fastening plate portion 121, and therefore the fastening plate 121 can be connected to the support plate 110 by using multiple bolts for fastening. Furthermore, when the fastening plate portion 121 is rotated and fastened, the rotational position of the fastening plate portion 121 connected to the support plate 110 can be easily changed.

[0059] A pair of bracket portions 123 can be vertically connected to opposite sides of the upper surface of the fastening plate portion 121 by welding. Each bracket portion 123 may have a pair of pin holes at its upper end, into which a pair of connecting pins 125 are inserted for mounting to the bracket portion. The two pin holes may be formed at different heights.

[0060] A pair of connecting pins 125 can be inserted into corresponding pin holes in each of a pair of bracket portions 123 for mounting to the bracket portion. The pair of connecting pins 125 can be positioned at different heights so that they are parallel to each other. A pair of hooks located at the end of the excavator arm can be captured by the pair of connecting pins 125 for securing to the connecting pins, thereby allowing the wire saw device 100 to be mounted to the excavator arm very easily.

[0061] Figure 6 This is a schematic diagram showing the configuration of the controller for a wire saw device used on an excavator.

[0062] The hydraulic pipe 250 extending from the excavator 10 can be connected to the hydraulic motor 170 via the control box 200, and the control box 200 can also be equipped with a flow control device 240 configured to control the flow rate of the fluid flowing through the hydraulic pipe 250.

[0063] Hydraulic line 250 may include an inlet hose extending from excavator 10 into control box 200 and an outlet hose extending from control box 200 back to excavator 10. Additionally, hydraulic line 250 may include an inlet hose extending to hydraulic motor 170 and an outlet hose extending from hydraulic motor 170.

[0064] The flow control device 240 can be housed in the control box 200 for connection to the hydraulic line 250. The flow control device 240 can form a flow control circuit including one or more flow control valves.

[0065] Although not shown, the wire saw device 100 according to the invention may further include a remote controller connected to the control box 200 via wired or wireless means. A user can operate the remote controller of the wire saw device 100 mounted to the excavator arm to adjust the rotation direction and speed of the hydraulic motor 170 via the flow control device 240, and to rotate the electric motor 210 in both forward and reverse directions, causing the upward and downward movement members 160 to move upward and downward, thereby maintaining tension on the wire 101.

[0066] The wire saw device for excavators according to the invention is configured to be easily and removably mounted to the excavator arm, thereby reducing the time required for wire saw installation.

[0067] In addition, the wire saw can rotate 360 ​​degrees via the excavator connection unit, which allows it to effectively perform vertical and horizontal cutting (sawing).

[0068] In addition, the drive pulley moves up and down according to the sawing speed, which maintains the tension of the wire, thereby allowing for smooth cutting of concrete, rock, etc.

[0069] Explanation of reference numerals in the attached figures

[0070] 10: Excavator

[0071] 100: Wire saw for excavators; 101: Wire; 110: Support plate; 114: Pulley mounting section

[0072] 120: Excavator connection unit; 121: Fastening plate part; 123: Bracket part; 125: Connecting pin.

[0073] 130: Support frame; 140: Guide rail; 150: Guide screw; 160: Upward and downward moving components.

[0074] 163: Motor bracket; 164: Cover component; 165: Pulley bracket; 170: Hydraulic motor

[0075] 180: Drive pulley; 185: Auxiliary pulley; 190: Driven pulley; 200: Control box

[0076] 201: Box body; 203: Front cover; 205: Rear cover; 207: Lifting ring section

[0077] 210: Electric motor; 220: Reducer; 240: Flow control device; 250: Hydraulic pipe

[0078] Although embodiments of the present invention have been described above, it will be apparent to those skilled in the art that various modifications and alterations can be made to the present invention by adding, changing, deleting or supplementing components without departing from the concept of the invention as set forth in the appended claims, and such modifications and alterations fall within the scope of the present invention.

[0079] Industrial applicability

[0080] The wire saw device for excavators according to the present invention is industrially applicable to cutting concrete structures, rocks, etc. on construction sites.

Claims

1. A wire saw device for an excavator, the wire saw device comprising: Support plate; An excavator connection unit is attached to the support plate so as to be removably connected to the excavator arm; A pair of guide rails, the pair of guide rails being connected to the support plate; A support frame that extends upward from the upper surface of the support plate while being disposed on opposite sides of the pair of guide rails, the pair of guide rails being connected to the upper end portion of the support frame; A guide screw, rotatably mounted between the support plate and the pair of guide rails. An upward and downward moving member having a pair of track holes through which the pair of guide rails extend and a screw hole through which the lead screw is inserted to engage with a screw hole, and causing upward and downward movement along the pair of guide rails; An electric motor is mounted in a control box located on the upper surface of the support frame for airtight sealing and is configured to move the upward and downward moving members upward and downward. A hydraulic motor, the hydraulic motor being mounted to a motor bracket, the motor bracket being connected to the upper front part of the upward and downward moving member; A drive pulley is connected to the rotating shaft of the hydraulic motor and rotates in both the forward and reverse directions; Two pairs of driven pulleys are installed on the left front side and the right front side of the support plate; A pair of auxiliary pulleys, the pair of auxiliary pulleys being mounted to opposite sides of the front surface of a pulley bracket, the pulley bracket being connected to the lower front side of the upward and downward moving members; and A wire, the wire being mounted so as to extend sequentially from the drive pulley through an inner driven pulley, the auxiliary pulley, and an outer driven pulley, wherein the movement of the wire is guided by the pair of auxiliary pulleys; Specifically, when the upward and downward moving components move upward, the drive pulley and the pair of auxiliary pulleys move upward to keep the wire taut, and The drive pulley moves up and down according to the cutting speed to maintain the tension of the wire.

2. The wire saw equipment according to claim 1, wherein, The screw hole is formed in the bracket portion, which is integrally formed between the portions forming the pair of track holes.

3. The wire saw equipment according to claim 1, wherein, The bracket portion is configured to have multiple reinforcing ribs, which are integrally connected between the forming portions of the pair of track holes and the forming portions of the screw holes.

4. The wire saw device according to claim 1 further includes a hydraulic pipe extending from the excavator, the hydraulic pipe being connected to the hydraulic motor via the control box.

5. The wire saw equipment according to claim 1, wherein, The excavator connection unit includes: The fastening plate portion has a plurality of fastening holes formed therein, such that the mounting angle of the fastening plate portion on the support plate can be changed; A pair of bracket portions, the pair of bracket portions extending upward from the fastening plate portion; and A pair of connecting pins, which are installed at different heights between the pair of bracket portions, for connection to the excavator arm.

6. The wire saw equipment according to claim 4 further includes a flow control device disposed in the control box, the flow control device being configured to control the flow rate of fluid flowing through the hydraulic pipe.

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