Reciprocating saw rock cutting equipment and cutting method

Abstract

The reciprocating saw rock cutting equipment comprises a main machine platform, a walking system arranged at the bottom of the main machine platform, a hydraulic system arranged on the main machine platform and used for supporting the main machine platform, an electrical control system, a reciprocating type cutting system and a driving system for driving the cutting system. The effects that the rock cutting efficiency is improved, raised dust generated in the cutting process is reduced, and the service life of the cutting saw blade is prolonged are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical cutting of vertical side walls of underground caverns, in particular to a reciprocating saw rock cutting device and a cutting method. Background Art

[0002] At present, in the excavation construction of underground powerhouses that have been built or are under construction in the field of domestic water conservancy and hydropower engineering, the construction method of pre-splitting the side walls first and then following up with the middle groove is basically adopted. The advantages of this construction method are mature construction methods, overall controllable excavation quality, early release of stress on the side walls, and overall stability of the cavern. The main disadvantages are complex construction procedures, large construction interference, the vibration of the surrounding pre-splitting blasting is not conducive to the stability of the high side wall surrounding rock, the stubble left by the pre-splitting blasting hole making causes over-excavation, the overall flatness of the side walls is not enough, and the project cost is high.

[0003] The underground powerhouse of Wendeng Pumped Storage Power Station in Shandong Province was excavated for the first time using track-type circular saw cutting technology. The high side walls were all cut with circular saws, which could effectively ensure the stability of the side wall excavation. However, when using the circular saw for cutting, the saw blade could not be close to the side wall due to the fixing nut of the saw blade, resulting in a 5cm misalignment. One side of the track needed to be raised. The side wall was cut in an oblique way. When the cutting deepened, the small diameter saw blade needed to be replaced with a large diameter saw blade. During the cutting process, the saw blade vibrated with a large amplitude, which could easily cause the saw blade head to wear. In severe cases, the saw would get stuck. In addition, the circular saw made a lot of noise when cutting, which would generate a lot of dust. Watering was needed to reduce the dust, causing water accumulation at the construction site. Therefore, how to overcome the shortcomings of the existing technology and seek a green, low-carbon, environmentally friendly and innovative side wall excavation method is a problem that needs to be solved for mechanical cutting and excavation of underground powerhouses. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and provide a high-frequency reciprocating rock cutting equipment and cutting method, to overcome the problems of large construction interference and high engineering cost in the traditional construction method of pre-splitting the periphery first and then grooving in the middle, to overcome the adverse effects of pre-splitting blasting vibration on the stability of rock anchor beams and high side walls of factory buildings, to overcome the problems of circular saws not being able to cut close to the side walls, large saw blade amplitude, high noise, large dust, and water accumulation at the construction site caused by water sprinkling to reduce dust, etc.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a reciprocating saw rock cutting equipment, including a main platform, a walking system arranged at the bottom of the main platform, a hydraulic system arranged on the main platform to support the main platform, an electrical control system, a reciprocating cutting system and a driving system for driving the cutting system.

[0006] Preferably, the cutting system includes a top slide rail, a multi-stage telescopic cylinder connected to the bottom of the slide rail, and a diamond saw blade horizontally fixedly connected to the movable end at the bottom of the multi-stage telescopic cylinder. A slide groove cooperating with the slide rail is horizontally arranged on the top of the main platform.

[0007] Preferably, the drive cutting system includes a motor fixed on the main platform, a transmission wheel fixed on the output shaft of the motor and a transmission connecting rod horizontally rotatably connected to the edge of the transmission wheel, and the movable end of the transmission connecting rod is rotatably connected to the end of the slide rail.

[0008] Preferably, the multi-stage telescopic cylinders are distributed at both ends of the slide rail, and the hydraulic system is connected to the multi-stage telescopic cylinders.

[0009] Preferably, the movable end of the multi-stage telescopic cylinder is vertically fixedly connected with a high-strength metal rod, the bottom end of the metal rod is provided with a slot matching the diamond saw blade, and the side wall of the metal rod is provided with a mounting threaded hole.

[0010] Preferably, the hydraulic system includes supporting cylinders vertically arranged at the four corners of the main engine platform, and the supporting cylinders are uniformly connected to the hydraulic control system and extend and retract synchronously.

[0011] Preferably, two ends of the host platform are fixedly connected with metal frames, and the supporting cylinder is fixed on the metal frames.

[0012] Preferably, the walking system includes a crawler walking mechanism disposed below the host platform, and a fixed structure in the middle of the crawler walking mechanism is connected to the host platform via a support platform.

[0013] Preferably, the cutting system is arranged on the outside of the host platform.

[0014] A cutting method for a reciprocating saw rock cutting device, comprising the following steps: S1. Level the rock surface to be cut, measure and lay out along the cutting direction, and mark the cutting line according to the laying out; S2. According to the length of the diamond saw blade, a guide bite hole is drilled on the cutting operation rock surface along the position of the metal rod connected to the diamond saw blade, and the guide bite hole is drilled to a predetermined depth as required; S3. Operate the rock cutting equipment to move to the cutting position so that the metal rod is located directly above the guide engagement hole, control the support cylinder to extend, lift the rock cutting equipment off the ground through the support cylinder, level the machine body, and adjust the diamond saw blade to coincide with the cutting line; S4, starting the driving system of the rock cutting equipment, the motor in the driving equipment drives the transmission wheel to rotate, driving the transmission connecting rod to rotate, and the transmission connecting rod pulls the slide rail to reciprocate in the horizontal direction during the rotation process, driving the diamond saw blade to reciprocate in the horizontal direction; S5, control the multi-stage telescopic oil cylinder to slowly extend, drive the diamond saw blade to slowly move downward, and cut the rock surface until the set depth is reached; S6, turn off the motor in the drive system, control the multi-stage telescopic cylinder to retract, make the diamond saw blade leave the cutting seam, retract the support cylinder, and control the travel system to move the rock cutting equipment to the next cutting section; S7, repeat steps S3-S6 until the cutting work is completed.

[0015] 1. The present invention provides a high-frequency reciprocating rock cutting equipment and cutting method. By adopting a crawler self-moving reciprocating saw, it can move to the cutting position by itself. It is flexible and can cut vertically close to the side wall. The cutting depth can be adjusted by a multi-stage cylinder according to construction requirements. The cutting seam width can reach 40mm. It has stronger adaptability when combined with the drilling and blasting layered excavation method.

[0016] 2. The crawler self-moving reciprocating saw needs water cooling and slag guiding during cutting. It can cut continuously with high cutting efficiency, very smooth cutting surface and no dust pollution.

[0017] 3. When the crawler self-moving reciprocating saw is cutting, blasting hole drilling operations can be carried out simultaneously in the underground plant excavation area. No protective layer needs to be reserved near the side wall. The rock mass in the excavation area is all excavated by step blasting, which greatly speeds up the excavation progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a top view of an embodiment of the present invention.

[0019] Figure 2 It is a front view of an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of a reciprocating saw in an embodiment of the present invention moving by a crawler to a position close to a side wall of a factory building.

[0021] Figure 4 This is a schematic diagram of an embodiment of the present invention in which the hydraulic legs are extended downward and the main machine is lifted off the ground to start vertical cutting operations.

[0022] Figure 5 This is a schematic diagram of the operation of the reciprocating saw in an embodiment of the present invention in which the multi-stage oil cylinder slowly pushes downward to perform vertical cutting in a high-frequency motion.

[0023] Figure 6 It is a schematic diagram of the operation of the reciprocating saw moving to the left end in an embodiment of the present invention.

[0024] Figure 7 Schematic diagram of repeated cyclic cutting operation in an embodiment of the present invention.

[0025] In the figure: 1. Travel system; 1-1. Crawler travel mechanism; 2. Main machine platform; 3. Hydraulic system; 3-1. Support cylinder; 4. Electrical control system; 5. Cutting system; 5-1. Slide rail; 5-2. Multi-stage telescopic cylinder; 5-3. Diamond saw blade; 5-4. Slide; 6. Driving system; 6-1. Transmission wheel; 6-2. Transmission connecting rod; 7. Cutting operation rock surface; 8. Guide bite hole. DETAILED DESCRIPTION

[0026] like Figure 1-3 As shown, the present invention provides a reciprocating saw rock cutting equipment, including a main platform 2, a walking system 1 arranged at the bottom of the main platform 2, a hydraulic system 3 arranged on the main platform 2 to support the main platform 2, an electrical control system 4, a reciprocating cutting system 5 and a driving system 6 for driving the cutting system 5.

[0027] A spirit level is provided on the host platform 2. When the rock cutting equipment is performing rock cutting construction, the host platform 2 will be lifted. The rock cutting equipment needs to maintain a stable working state. After the rock cutting equipment is lifted, the spirit level is used for leveling detection.

[0028] A remote communication module is provided on the host platform 2 for remotely controlling the movement and working status of the rock cutting equipment. During the rock cutting process, the workers are away from the construction area and can observe remotely.

[0029] The electrical control system 4 is used to control all electrical components of the rock cutting equipment.

[0030] like Figure 1-3 The cutting system 5 comprises a top slide rail 5-1, a multi-stage telescopic oil cylinder 5-2 connected to the bottom of the slide rail 5-1, and a diamond saw blade 5-3 horizontally fixedly connected to the bottom movable end of the multi-stage telescopic oil cylinder 5-2. A slide groove 5-4 cooperating with the slide rail 5-1 is horizontally arranged on the top of the host platform 2.

[0031] The slide groove 5-4 is installed on the side wall of the host platform 2, and the cross-section of the slide groove 5-4 is C-shaped. The slide rail 5-1 passes through the slide groove 5-4, and the length of the slide rail 5-1 is greater than the length of the slide groove 5-4. During the sliding process of the slide rail 5-1, the end of the slide rail 5-1 will not enter the slide groove 5-4.

[0032] like Figure 1-3 The driving cutting system 5 comprises a motor fixed on the host platform 2, a transmission wheel 6-1 fixed on the output shaft of the motor, and a transmission connecting rod 6-2 horizontally rotatably connected to the edge of the transmission wheel 6-1, and the movable end of the transmission connecting rod 6-2 is rotatably connected to the end of the slide rail 5-1.

[0033] The transmission wheel 6-1 is coaxially fixedly connected to the output shaft of the motor. The motor drives the transmission wheel 6-1 to rotate. During the rotation, the transmission wheel 6-1 drives the transmission connecting rod 6-2 to rotate, and then the transmission connecting rod 6-2 pulls or pushes the slide rail 5-1 to reciprocate along the slide groove 5-4, thereby realizing the reciprocating movement of the diamond saw blade 5-3 in the horizontal direction to perform rock cutting construction.

[0034] like Figure 2 The multi-stage telescopic oil cylinder 5-2 is distributed at both ends of the slide rail 5-1, and the hydraulic system 3 is connected to the multi-stage telescopic oil cylinder 5-2. The diamond saw blade 5-3 is installed through two multi-stage telescopic oil cylinders 5-2 to ensure the stability of the connection of the diamond saw blade 5-3.

[0035] As a preferred embodiment of the present invention, the movable end of the multi-stage telescopic oil cylinder 5-2 is vertically fixedly connected with a high-strength metal rod, the bottom end of the metal rod is provided with a slot matched with the diamond saw blade 5-3, and the side wall of the metal rod is provided with a mounting threaded hole. The diameter of the metal rod is smaller than the diameter of the movable end of the multi-stage telescopic oil cylinder 5-2, and the metal rod can be prevented from contacting the hole wall of the guide bite hole 8 during the back and forth movement in the guide bite hole 8, thereby ensuring the safety of the construction.

[0036] The slotted and threaded holes on the metal rod can stably install the diamond saw blade 5-3, and a countersunk hole is provided at the mouth of the threaded hole to accommodate a screw.

[0037] like Figure 1 and Figure 2 The hydraulic system 3 includes supporting cylinders 3-1 vertically arranged at the four corners of the main platform 2. The supporting cylinders 3-1 are uniformly connected to the hydraulic control system 3 and extend and retract synchronously. By controlling the four supporting cylinders 3-1 to extend at the same time, the main platform 2 can be stably lifted.

[0038] like Figure 1 and Figure 2 As shown. The two ends of the host platform 2 are fixedly connected with metal frames, and the supporting oil cylinder 3-1 is fixed on the metal frames. The metal frame serves as a mounting structure for the supporting oil cylinder 3-1 and can also serve as an anti-collision structure.

[0039] like Figure 2 and Figure 3 The walking system 1 includes a crawler walking mechanism 1-1 arranged below the host platform 2, and a fixed structure in the middle of the crawler walking mechanism 1-1 is connected to the host platform 2 through a support platform. The driving motor of the crawler wheel is remotely controlled to rotate, so that the crawler walking mechanism 1-1 drives the host platform 2 to move, and the rock cutting equipment moves automatically to improve the efficiency of construction.

[0040] like Figure 1The cutting system 5 is arranged on the outside of the host platform 2. When cutting the wall, the cutting system 5 arranged on the side can ensure that the cutting system 5 works as close to the wall as possible.

[0041] like Figure 3-Figure 7 As shown, a cutting method of a reciprocating saw rock cutting device comprises the following steps: S1, leveling the rock surface 7 to be cut, measuring and laying out along the cutting direction, and marking the cutting line according to the laying out; S2, according to the length of the diamond saw blade 5-3, a guide bite hole 8 is drilled on the cutting operation rock surface 7 along the position of the metal rod connected to the diamond saw blade 5-3, and the guide bite hole 8 is drilled to a predetermined depth as required; S3, operate the rock cutting device to move to the cutting position, so that the metal rod is located directly above the guide engagement hole 8, control the support cylinder 3-1 to extend, lift the rock cutting device off the ground through the support cylinder 3-1, level the machine body, and adjust the diamond saw blade 5-3 to coincide with the cutting line; S4, start the driving system 6 of the rock cutting equipment, the motor in the driving equipment 6 drives the transmission wheel 6-1 to rotate, driving the transmission connecting rod 6-2 to rotate, and the transmission connecting rod 6-2 pulls the slide rail 5-1 to reciprocate in the horizontal direction during the rotation process, driving the diamond saw blade 5-3 to reciprocate in the horizontal direction; S5, control the multi-stage telescopic oil cylinder 5-2 to slowly extend, drive the diamond saw blade 5-3 to slowly move downward, and cut the cutting operation rock surface 7 until the set depth is reached; S6, turn off the motor in the drive system 6, control the multi-stage telescopic cylinder 5-2 to retract, so that the diamond saw blade 5-3 leaves the cutting seam, retract the supporting cylinder 3-1, and control the walking system 1 to move the rock cutting equipment to the next cutting section; S7, repeat steps S3-S6 until the cutting work is completed.

Claims

1. A reciprocating saw rock cutting device, characterized in that: The machine comprises a main machine platform (2), a walking system (1) arranged at the bottom of the main machine platform (2), a hydraulic system (3) arranged on the main machine platform (2) to support the main machine platform (2), an electrical control system (4), a reciprocating cutting system (5), and a driving system (6) for driving the cutting system (5).

2. A reciprocating saw rock cutting device as claimed in claim 1, characterized in that: The cutting system (5) comprises a top slide rail (5-1), a multi-stage telescopic oil cylinder (5-2) connected to the bottom of the slide rail (5-1), and a diamond saw blade (5-3) horizontally fixedly connected to the bottom movable end of the multi-stage telescopic oil cylinder (5-2); a slide groove (5-4) cooperating with the slide rail (5-1) is horizontally arranged on the top of the host platform (2).

3. A reciprocating saw rock cutting device as claimed in claim 2, characterized in that: The driving cutting system (5) comprises a motor fixed on the main machine platform (2), a transmission wheel (6-1) fixed on the output shaft of the motor, and a transmission connecting rod (6-2) horizontally rotatably connected to the edge of the transmission wheel (6-1), and the movable end of the transmission connecting rod (6-2) is rotatably connected to the end of the slide rail (5-1).

4. A reciprocating saw rock cutting device as claimed in claim 2, characterized in that: The multi-stage telescopic oil cylinder (5-2) is distributed at both ends of the slide rail (5-1), and the hydraulic system (3) is connected to the multi-stage telescopic oil cylinder (5-2).

5. A reciprocating saw rock cutting device as claimed in claim 2, characterized in that: The movable end of the multi-stage telescopic oil cylinder (5-2) is vertically fixedly connected to a high-strength metal rod, the bottom end of the metal rod is provided with a slot matching the diamond saw blade (5-3), and the side wall of the metal rod is provided with a mounting threaded hole.

6. A reciprocating saw rock cutting device as claimed in claim 1, characterized in that: The hydraulic system (3) comprises supporting oil cylinders (3-1) vertically arranged at the four corners of the main engine platform (2); the supporting oil cylinders (3-1) are uniformly connected to the hydraulic control system (3) and extend and retract synchronously.

7. A reciprocating saw rock cutting device as claimed in claim 2, characterized in that: Both ends of the main engine platform (2) are fixedly connected to metal frames, and the supporting oil cylinder (3-1) is fixed on the metal frames.

8. A reciprocating saw rock cutting device as claimed in claim 1, characterized in that: The walking system (1) comprises a crawler walking mechanism (1-1) arranged below the host platform (2), and a fixed structure in the middle of the crawler walking mechanism (1-1) is connected to the host platform (2) via a support platform.

9. A reciprocating saw rock cutting device as claimed in any one of claims 1 to 8, characterized in that: The cutting system (5) is arranged on the outside of the host platform (2).

10. A cutting method for a reciprocating saw rock cutting device as claimed in claim 1, characterized in that: The steps include: S1, leveling the rock surface (7) to be cut, measuring and laying out along the cutting direction, and marking the cutting line according to the laying out; S2, according to the length of the diamond saw blade (5-3), a guide bite hole (8) is drilled on the cutting operation rock surface (7) along the position of the metal rod connected to the diamond saw blade (5-3), and the guide bite hole (8) is drilled to a predetermined depth as required; S3, operating the rock cutting device to move to the cutting position so that the metal rod is located directly above the guide engagement hole (8), controlling the support cylinder (3-1) to extend, lifting the rock cutting device off the ground through the support cylinder (3-1), leveling the machine body, and adjusting the diamond saw blade (5-3) to coincide with the cutting line; S4, starting the driving system (6) of the rock cutting device, the motor in the driving device (6) drives the transmission wheel (6-1) to rotate, driving the transmission connecting rod (6-2) to rotate, and the transmission connecting rod (6-2) pulls the slide rail (5-1) to move back and forth in the horizontal direction during the rotation process, driving the diamond saw blade (5-3) to move back and forth in the horizontal direction; S5, controlling the multi-stage telescopic oil cylinder (5-2) to slowly extend, driving the diamond saw blade (5-3) to slowly move downward, and cutting the cutting operation rock surface (7) until a set depth is reached; S6, turning off the motor in the driving system (6), controlling the multi-stage telescopic cylinder (5-2) to retract, causing the diamond saw blade (5-3) to leave the cutting seam, retracting the supporting cylinder (3-1), and controlling the walking system (1) to move the rock cutting device to the next cutting section; S7, repeat steps S3-S6 until the cutting work is completed.

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