Cutting device and cutting method

Abstract

A cutting device includes a water jet cutting machine, a high-pressure hose, a cutting module, and a traction mechanism. The water jet cutting machine is used to pressurize water. The water jet cutting machine's water outlet is connected to a water cutting head via a high-pressure hose. The water cutting head is mounted on the cutting module, which is located within an elongated cavity. The traction mechanism is used to tractionally move the cutting module. A cutting method is provided, based on the aforementioned cutting device. The method uses the traction mechanism to control the movement of the cutting module within the elongated cavity to cut components within the elongated cavity. The method is suitable for cutting and removing components installed within the elongated cavity.

Description

Technical Field

[0001] The present invention relates to the field of cutting devices, and in particular to a cutting device and a cutting method, which are specifically suitable for cutting and disassembling components in a narrow and long cavity. Background Art

[0002] In the field of machinery, it is often necessary to install various components inside a narrow and long cavity. Due to installation precision requirements, some components cannot be installed using bolts or other connecting devices, but are instead connected to the cavity through a supporting structure. When these components need to be removed, the supporting structure needs to be cut and removed from inside the narrow and long cavity. Existing cutting equipment is difficult to achieve from the inside of the narrow and long cavity, and cutting the supporting structure cannot ensure that the cut components are easy to remove. Therefore, a cutting device is needed that can enter the interior of a narrow and long cavity and cut the structure installed inside the narrow and long cavity. Summary of the Invention

[0003] The purpose of the present invention is to overcome the problem in the prior art that it is difficult to cut and remove components inside a narrow and long cavity, and to provide a cutting device and a cutting method for cutting in a narrow and long cavity.

[0004] To achieve the above objectives, the technical solution of the present invention is:

[0005] A cutting device includes a water cutting machine, a high-pressure hose, a cutting module and a traction mechanism. The water outlet of the water cutting machine is connected to the water cutting head through the high-pressure hose. The water cutting head is used to enter the interior of a narrow and long cavity for cutting. The traction mechanism is used to tow the water cutting head to move in the narrow and long cavity.

[0006] The water cutting head is arranged on the cutting module, the end of the cutting module is connected to the traction mechanism, the cutting module is slidably matched with the guide rail, and the cutting module can slide along the guide rail, and the guide rail is arranged inside the narrow and long cavity.

[0007] The water cutting head includes a water inlet pipe, a cutting head body and a jet pipe. The water inlet pipe is fixedly arranged at the front part of the cutting head body, and the rear part of the cutting head body is fixedly connected to the bottom of the jet pipe. The water outlet of the water cutting machine is connected to the water inlet of the water inlet pipe through a high-pressure hose, and the water outlet of the water inlet pipe is connected to the water inlet of the cutting head body. The water outlet of the cutting head body is connected to the water inlet of the jet pipe, and the water outlet of the jet pipe is used to spray high-pressure fluid.

[0008] The top of the cutting module is symmetrically provided with two cutting head mounting grooves, the cutting head body is arranged in one of the cutting head mounting grooves, and the outer surface of the cutting head body is clearance-matched with the inner surface of the cutting head mounting groove;

[0009] The cutting head mounting groove is inclined toward the direction close to the central axis of the cutting module. When the cutting head body is located in the cutting head mounting groove, the jet tube fixed on the top of the cutting head body is inclined toward the direction close to the central axis of the cutting module.

[0010] When the cutting head body is installed in the cutting head installation groove, the inclination angle of the jet tube is α, and the horizontal distance between the jet port of the jet tube and the central axis of the cutting module is L. The values ​​of α and L are set according to the shape and size of the part to be cut.

[0011] A positioning block is fixedly provided at the rear of the cutting module, and the positioning block is limitedly matched with the rear end of the cutting head body arranged in the cutting head mounting groove. The top of the cutting head body is tightly fitted with the bottom of the pressure plate arranged above the cutting head mounting groove. The two sides of the pressure plate are connected to the cutting module by fastening bolts, and the rear of the pressure plate is limitedly matched with the front of the jet tube.

[0012] The guiding rail includes a symmetrically arranged left guide rail and a right guide rail, the inner side of the left guide rail is provided with a recessed left slide groove, the inner side of the right guide rail is provided with a right slide groove with the same shape as the left slide groove, and the two sides of the cutting module are symmetrically provided with outwardly protruding guiding surfaces, and the guiding surfaces match the left slide groove and the right slide groove.

[0013] The traction mechanism includes a traction drum and a traction rope. The traction rope is wound on the traction drum. One end of the traction rope is fixedly connected to the traction drum, and the other end of the traction rope is connected to the cutting module.

[0014] A pull ring is fixedly provided at the front and rear ends of the cutting module, and the pull ring is used to connect the traction rope.

[0015] A cutting method is provided, the cutting method being based on the above-mentioned cutting device. Both the cutting device and the cutting method are used for performing cutting operations in a narrow and long cavity. The narrow and long cavity is provided with a left guide rail and a right guide rail cooperating with a cutting module. The structure to be cut in the narrow and long cavity is located between the left guide rail and the right guide rail. The cutting method specifically comprises the following steps:

[0016] Connect the cutting module:

[0017] Place a water cutting head in a cutting head installation slot on the top of the cutting module, and align the jet tube in the water cutting head with the structure to be cut. Connect one end of the high-pressure hose far from the water cutting machine to the water inlet pipe, and connect the end of the cutting module to the traction mechanism.

[0018] First Cut:

[0019] Turn on the water jet cutting machine and control the cutting module to slide along the left and right guide rails through the traction mechanism to perform the first cut on the structure to be cut inside the narrow and long cavity. After the first cut is completed, turn off the water jet cutting machine 1;

[0020] Second Cut:

[0021] Take out the water cutting head from the current cutting head installation slot, and set the water cutting head in another cutting head installation slot on the top of the cutting module, turn on the water cutting machine and control the cutting module to slide along the left guide rail and the right guide rail through the traction mechanism to perform a second cut on the structure that needs to be cut inside the narrow and long cavity. After the second cut is completed, turn off the water cutting machine.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In a cutting device of the present invention, a water cutting mode is used. The water outlet of the water cutting machine is connected to the water cutting head through a high-pressure hose. There can be a long distance between the water cutting machine and the water cutting head. When the water cutting head follows the cutting module to move inside the narrow and long cavity, the longer high-pressure hose can enable the cutting module to have a longer stroke, which is suitable for cutting the structure inside the narrow and long cavity; at the same time, compared with other mechanical transmission structures, the traction mechanism can realize the linear movement of the cutting module for a longer distance in the narrow and long cavity, further ensuring that the cutting module can have a longer stroke, and the connection between the traction mechanism and the cutting module is simple, and there is no need to add more complex mechanical structures to the cutting module, which is convenient for operation inside the narrow and long cavity. Therefore, the water cutting mode is adopted in this design, and a high-pressure hose is used to connect the water cutting machine located outside the narrow and long cavity and the cutting module located inside the narrow and long cavity, which is more suitable for cutting structures inside a long and narrow cavity.

[0024] 2. In a cutting device of the present invention, a guide rail for guiding is provided in a narrow and long cavity, and two cutting head mounting grooves are symmetrically provided on the top of the cutting module. A water cutting head can be installed in the two cutting head mounting grooves and the structure inside the narrow and long cavity is cut twice. At the same time, since the two cutting head mounting grooves are inclined toward the central axis of the cutting module, after the water cutting head is installed in any of the cutting head mounting grooves, the jet tube on the water cutting head is inclined toward the central axis of the cutting module. Therefore, after the structure inside the narrow and long cavity is cut twice, a middle part of the cut structure is cut off, and the cross-section of the cut part is trapezoidal. The cut part is easy to remove from the cut structure, thereby making it easy to remove the cut structure from the narrow and long cavity. Therefore, in this design, two inclined cutting head mounting grooves are symmetrically provided on the top of the cutting module. The water cutting head is installed in the two cutting head mounting grooves respectively and the structure inside the narrow and long cavity is cut twice. The middle part of the cut structure can be cut off, and the cut part is easy to remove, thereby facilitating the removal of the cut structure from the narrow and long cavity.

[0025] 3. The guide rails in a cutting device of the present invention include a symmetrically arranged left guide rail and a right guide rail, the inner side of the left guide rail is provided with a recessed left slide groove, the inner side of the right guide rail is provided with a right slide groove of the same shape as the left slide groove, and the two sides of the cutting module are symmetrically provided with outwardly protruding guide surfaces, and the guide surfaces located on both sides of the cutting module have the same shape, so the guide surfaces can slide with both the left guide rail and the right guide rail. When cutting two parts that are symmetrically arranged in the upper and lower parts or symmetrically arranged in the left and right parts, the position of the guide rails and the cutting module can be adjusted so that the jet tube on the cutting module is facing one of the parts for cutting, and then the cutting module is flipped over so that the jet tube on the cutting module is facing the remaining other part and cutting the remaining other part, and the cutting device can conveniently cut the symmetrically arranged parts. Therefore, in this design, the inner sides of the two guide rails are provided with slide grooves of the same shape, and the two sides of the cutting module are provided with guide surfaces of the same shape, which is convenient for cutting symmetrically arranged parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the cutting module and the guide rail.

[0028] Figure 3 This is a schematic diagram of the guide rail.

[0029] Figure 4 It is a three-dimensional diagram of the cutting module.

[0030] Figure 5 It is a three-dimensional diagram of the cutting module.

[0031] Figure 6 This is a top view of the cutting module.

[0032] Figure 7 is a side view of the cutting module.

[0033] Figure 8 This is the front view of the cutting module.

[0034] Figure 9 This is a schematic diagram of a water jet cutting head installed in a cutting head mounting slot.

[0035] Figure 10 This is a schematic diagram of the cutting module after it is turned upside down.

[0036] Figure 11 is a schematic diagram of the jet tube tilt setting.

[0037] Figure 12 It is a schematic diagram of a long and narrow track device.

[0038] Figure 13 It is a schematic diagram of a cutting device cutting components within a narrow and long track device.

[0039] Figure 14 It is a schematic diagram of the cutting track on the components within the narrow and long track device.

[0040] In the figure: water cutting machine 1, high-pressure hose 2, cutting module 3, guide surface 31, cutting head mounting groove 32, pressure plate 33, fastening bolt 34, positioning block 35, connecting screw hole 36, traction mechanism 4, traction roller 41, traction rope 42, guide rail 5, left guide rail 51, right guide rail 52, water cutting head 6, water inlet pipe 61, cutting head body 62, jet tube 63, pull ring 7, mounting screw 8, partition 100, upper support block 201, lower support block 202, covering layer 300. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See also Figures 1 to 14 A cutting device is used to perform cutting operations inside a narrow and long cavity. The cutting device includes a water cutting machine 1, a high-pressure hose 2, a cutting module 3 and a traction mechanism 4. The water outlet of the water cutting machine 1 is connected to the water cutting head 6 through the high-pressure hose 2. The water cutting head 6 is arranged on the cutting module 3. The cutting module 3 is used to enter the narrow and long cavity for cutting. The traction mechanism 4 is used to pull the cutting module 3 to move in the narrow and long cavity.

[0043] A guide rail 5 for guiding is provided in the narrow and long cavity. The guide rail 5 is in sliding cooperation with the cutting module 3 , and the cutting module 3 can slide back and forth along the guide rail 5 .

[0044] The water cutting head 6 includes a water inlet pipe 61, a cutting head body 62 and a jet pipe 63. The water inlet pipe 61 is fixedly arranged at the front of the cutting head body 62, and the rear of the cutting head body 62 is vertically connected to the bottom of the jet pipe 63. The water outlet of the water cutting machine 1 is connected to the water inlet of the water inlet pipe 61 through the high-pressure hose 2, the water outlet of the water inlet pipe 61 is connected to the water inlet of the cutting head body 62, and the water outlet of the cutting head body 62 is connected to the water inlet of the jet pipe 63. The water outlet of the jet pipe 63 is used to spray high-pressure fluid.

[0045] like Figure 1 As shown, the water cutting machine 1 is used to pressurize water so that the water has a very high pressure. The water with a very high pressure flows out through the water outlet of the water cutting machine 1, flows into the water cutting head 6 after passing through the high-pressure hose 2, and is ejected from the jet tube 63 of the water cutting head 6. Since the inner hole diameter of the jet tube 63 is very small, the high-pressure water flow ejected from the jet tube 63 will form a very high-speed jet, which can be used for cutting processing.

[0046] Two cutting head mounting grooves 32 are symmetrically provided on the top of the cutting module 3. The cutting head body 62 is arranged in one of the cutting head mounting grooves 32. The outer surface of the cutting head body 62 is clearance-matched with the inner surface of the cutting head mounting groove 32. To prevent the water cutting head 6 from rotating in the cutting head mounting groove 32, the cross-section of the cutting head mounting groove 32 and the cross-section of the cutting head body 62 can be triangular, rectangular or polygonal, or can be other shapes besides circular.

[0047] like Figure 8 、 9 As shown, in order to ensure that when the cutting head body 62 is located in the cutting head mounting groove 32, the jet tube 62 can be tilted at a certain angle toward the direction close to the central axis of the cutting module 3, the cutting head mounting groove 32 is tilted toward the direction close to the central axis of the cutting module 3. When the cutting head body 62 is located in the cutting head mounting groove 32, the jet tube 63 fixed on the top of the cutting head body 62 is tilted toward the direction close to the central axis of the cutting module 3.

[0048] Since the jet tube 62 is tilted toward the center axis of the cutting module 3, the cutting direction of the fluid ejected from the jet tube 62 is also tilted toward the center axis of the cutting module 3. When the cutting device is used to cut a component with a certain thickness, the water cutting head 6 is placed in two different cutting head mounting slots 32 to cut the component. Figure 14As shown, the portion between the two cutting tracks on the component is cut and separated, and the cross section of the cut and separated portion is trapezoidal. The cut and separated portion is easy to pry off and take out, thereby enabling the cut component to be removed.

[0049] like Figure 11 As shown, when the cutting head body 62 is installed in the cutting head installation slot 32, the inclination angle of the jet tube 63 is α, and the horizontal distance between the jet port of the jet tube 63 and the central axis of the cutting module 3 is L. The values ​​of α and L are set according to the shape and size of the part to be cut. Figure 11 As shown, the value range of α is 5°-30°, and the value range of L is 20mm-40mm.

[0050] like Figure 4 、 5 As shown, a positioning block 35 is fixedly provided at the rear of the cutting module 3, and the positioning block 35 is limitedly matched with the rear end of the cutting head body 62 arranged in the cutting head mounting groove 32, and the top of the cutting head body 62 is tightly fitted with the bottom of the pressure plate 33 arranged above the cutting head mounting groove 32. The two sides of the pressure plate 33 are connected to the cutting module 3 by fastening bolts 34, and the rear part of the pressure plate 33 is limitedly matched with the front part of the jet tube 62. The setting of the pressure plate 33 and the positioning block 35 can prevent the cutting head body 62 from moving axially in the cutting head mounting groove 32.

[0051] like Figure 2 、 10 As shown, the guiding rail 5 includes a symmetrically arranged left guide rail 51 and a right guide rail 52, the inner side of the left guide rail 51 is provided with a recessed left slide groove 53, and the inner side of the right guide rail 52 is provided with a right slide groove 54 with the same shape as the left slide groove 53, and the two sides of the cutting module 3 are symmetrically provided with outwardly protruding guiding surfaces 31, the guiding surfaces 31 match the shape of the left slide groove 53, and the guiding surfaces 31 are matched with the groove wall gap of the left slide groove 53, the guiding surfaces 31 match the shape of the right slide groove 54, and the guiding surfaces 31 are matched with the groove wall gap of the right slide groove 54, and any side of the cutting module 3 can slide along the left slide groove 53 or the right slide groove 54.

[0052] like Figure 1 As shown, the traction mechanism 4 includes a traction drum 41 and a traction rope 42. The traction rope 42 is wound around the traction drum 41. One end of the traction rope 42 is fixedly connected to the traction drum 41, and the other end of the traction rope 42 is connected to the cutting module 3. A connecting screw hole 36 is defined at each of the front and rear ends of the cutting module 3. The front connecting screw hole 36 is threadedly engaged with one end of a mounting screw 8. The other end of the mounting screw 8 is fixedly connected to a pull ring 7. The pull ring 7 is used to connect the traction rope 42.

[0053] For a long and narrow cavity, if a left guide rail 51 and a right guide rail 52 that cooperate with the cutting module 3 are provided inside it, and the structure that needs to be cut inside the long and narrow cavity is located between the left guide rail 51 and the right guide rail 52, the cutting module 3 can be used directly to cut the structure that needs to be cut.

[0054] A cutting method for cutting the inner parts of a narrow and long track device, such as Figure 12 As shown, the track device includes an elongated cavity with a square cross-section surrounded by four partitions 100, and the left guide rail 51 and the right guide rail 52 are symmetrically installed inside the elongated cavity. The top and bottom of the left guide rail 51 are each pressed together with a partition 100, and the top and bottom of the right guide rail 52 are each pressed together with a partition 100. An upper support block 201 and a lower support block 202 are provided between the left guide rail 51 and the right guide rail 52. The top of the left guide rail 51 and the top of the right guide rail 52 are pressed together through the upper support block 201, and the bottom of the left guide rail 51 and the bottom of the right guide rail 52 are pressed together through the lower support block 202. A layer of covering layer 300 is provided on the outside of the four partitions 100, and the covering layer 300 is formed by integrally gluing and curing a composite material.

[0055] When disassembling the left guide rail 51 and the right guide rail 52 of the narrow track device, since disassembling them from the outside of the track device requires the use of a large machine tool, which is costly and time-consuming, it is necessary to first cut and remove the upper support block 201 and the lower support block 202 from the inside of the track device, and then take out the left guide rail 51 and the right guide rail 52. Figure 13 As shown, the cutting method for cutting the upper support block 201 and the lower support block 202 in the narrow and long track device is based on the above-mentioned cutting device. The cutting method for cutting the internal components of the narrow and long track device includes the following steps:

[0056] S1.1. Connect the cutting module:

[0057] like Figure 1 、 Figure 2 As shown, a water cutting head 6 is installed in a cutting head installation groove 32 on the top of the cutting module 3 that matches the left guide rail 51 and the right guide rail 52, and one end of the high-pressure hose 2 far from the water cutting machine 1 is connected to the water inlet pipe 61, and the end of the cutting module 3 is connected to the traction mechanism 4;

[0058] S1.2. Perform the first cut on the upper support block 201:

[0059] Turn on the water jet cutting machine 1 and control the cutting module 3 to slide along the left guide rail 51 and the right guide rail 52 through the traction mechanism 4, so that the cutting module 3 slowly slides from one end of the narrow and long track device to the other end and performs the first cutting on the upper support block 201. After the first cutting of the upper support block 201 is completed, turn off the water jet cutting machine 1;

[0060] S1.3. Perform a second cut on the upper support block 201:

[0061] like Figure 9 As shown, the water jet cutting head 6 is taken out from the current cutting head installation slot 32, and the water jet cutting head 6 is placed in another cutting head installation slot 32. The water jet cutting machine 1 is turned on and the cutting module 3 is controlled by the traction mechanism 4 to slide along the left guide rail 51 and the right guide rail 52, so that the cutting module 3 slowly slides from one end of the narrow and long track device to the other end and performs a second cut on the upper support block 201. After the second cut on the upper support block 201 is completed, the water jet cutting machine 1 is turned off.

[0062] S1.4 Perform the first cut on the lower support block 202:

[0063] like Figure 10 As shown, the cutting module 3 is turned over so that the top of the cutting module 3 faces downward, the water jet cutting machine 1 is turned on, and the cutting module 3 is controlled by the traction mechanism 4 to slide along the left guide rail 51 and the right guide rail 52, so that the cutting module 3 slowly slides from one end of the narrow and long track device to the other end and performs the first cutting on the lower support block 202. After the first cutting of the lower support block 202 is completed, the water jet cutting machine 1 is turned off;

[0064] S1.5 Perform the second cut on the lower support block 202:

[0065] Take out the water cutting head 6 from the current cutting head installation slot 32, and set the water cutting head 6 in another cutting head installation slot 32, turn on the water cutting machine 1 and control the cutting module 3 to slide along the left guide rail 51 and the right guide rail 52 through the traction mechanism 4, so that the cutting module 3 slowly slides from one end of the narrow and long track device to the other end and performs a second cutting on the lower support block 202. After the second cutting of the lower support block 202 is completed, turn off the water cutting machine 1.

[0066] The upper support block 201 and the lower support block 202 in the narrow track device are cut four times in total, and the cutting track is as follows: Figure 14As shown, there are four cutting tracks. The part between the two cutting tracks (cutting track 1 and cutting track 2) on the upper support block 201 is pried off and removed, and the part between the two cutting tracks (cutting track 3 and cutting track 4) on the lower support block 202 is pried off and removed. The upper support block 201 and the lower support block 202 can be removed and the left guide rail 51 and the right guide rail 52 can be taken out.

[0067] For a narrow and long cavity, if there is no guide rail inside it, the left guide rail 51 and the right guide rail 52 that match the cutting module 3 can be arranged in the narrow and long cavity first, and then the cutting module 3 is used to cut the structure to be cut inside the narrow and long cavity. The cutting steps are as follows:

[0068] S2.1. Arrange the guide rails:

[0069] A left guide rail 51 and a right guide rail 52 are arranged in the narrow and long cavity to match the cutting module 3, and the structure to be cut inside the narrow and long cavity is located between the left guide rail 51 and the right guide rail 52:

[0070] S2.2. Connect the cutting module:

[0071] A water cutting head 6 is installed in a cutting head installation slot 32 at the top of the cutting module 3, and the jet tube 63 in the water cutting head 6 is aligned with the structure to be cut. The end of the high-pressure hose 2 far from the water cutting machine 1 is connected to the water inlet pipe 61, and the end of the cutting module 3 is connected to the traction mechanism 4;

[0072] S2.3, First Cutting:

[0073] Turn on the water jet cutting machine 1, and control the cutting module 3 to slide along the left guide rail 51 and the right guide rail 52 through the traction mechanism 4 to perform the first cut on the structure to be cut inside the narrow and long cavity. After the first cut is completed, turn off the water jet cutting machine 1;

[0074] S2.4, Second Cutting:

[0075] like Figure 9 As shown, the water cutting head 6 is taken out from the current cutting head installation slot 32, and the water cutting head 6 is set in another cutting head installation slot 32 on the top of the cutting module 3, the water cutting machine 1 is turned on, and the cutting module 3 is controlled by the traction mechanism 4 to slide along the left guide rail 51 and the right guide rail 52, and the structure that needs to be cut inside the narrow and long cavity is cut for the second time, and the cutting operation is completed.

[0076] The principle of the present invention is described as follows:

[0077] The cutting method is used to cut components fixed in a narrow and long cavity by extrusion or other means. After the component extruded and fixed in the narrow and long cavity is cut twice, the cross-section of the part between the cutting tracks of the two cuts is trapezoidal, and this part is easy to pry off and remove, thereby loosening the entire extrusion fixing structure, so that the component fixed in the narrow and long inner cavity can be disassembled.

[0078] For a long and narrow cavity, if a left guide rail 51 and a right guide rail 52 that cooperate with the cutting module 3 are provided inside it, and the structure to be cut inside the long and narrow cavity is located between the left guide rail 51 and the right guide rail 52, the cutting module 3 can be used directly to cut the structure to be cut. If there is no guide rail inside the long and narrow cavity, the guide rail can be arranged in the long and narrow cavity first, and then the structure to be cut in the long and narrow cavity can be cut by the cutting module 3 that cooperates with the guide rail.

[0079] The cutting device can conveniently cut and remove symmetrically arranged parts: the cutting module 3 is located between two symmetrical parts that need to be cut, and the part that needs to be cut that is facing the jet tube 62 on the cutting module 3 is first cut, and then the cutting module 3 is flipped up and down to cut the other part that needs to be cut.

[0080] Example 1:

[0081] A cutting device, comprising a water cutting machine 1, a high-pressure hose 2, a cutting module 3 and a traction mechanism 4, wherein the water outlet of the water cutting machine 1 is connected to a water cutting head 6 through a high-pressure hose 2, the water cutting head 6 is used to enter the interior of a narrow and long cavity for cutting, and the traction mechanism 4 is used to pull the water cutting head 6 to move in the narrow and long cavity; the water cutting head 6 is arranged on the cutting module 3, the end of the cutting module 3 is connected to the traction mechanism 4, the cutting module 3 is slidably matched with a guide rail 5, the cutting module 3 can slide along the guide rail 5, and the guide rail 5 is arranged in the narrow and long cavity Internal; The water cutting head 6 includes a water inlet pipe 61, a cutting head body 62 and a jet pipe 63. The water inlet pipe 61 is fixedly arranged at the front of the cutting head body 62, and the rear of the cutting head body 62 is fixedly connected to the bottom of the jet pipe 63. The water outlet of the water cutting machine 1 is connected to the water inlet of the water inlet pipe 61 through the high-pressure hose 2. The water outlet of the water inlet pipe 61 is connected to the water inlet of the cutting head body 62, and the water outlet of the cutting head body 62 is connected to the water inlet of the jet pipe 63. The water outlet of the jet pipe 63 is used to spray high-pressure fluid; the top left and right of the cutting module 3 are opposite The cutting head 32 is provided with two cutting head mounting grooves 32, and the cutting head body 62 is arranged in one cutting head mounting groove 32, and the outer surface of the cutting head body 62 is clearance-matched with the inner surface of the cutting head mounting groove 32; the cutting head mounting groove 32 is inclined toward the central axis direction of the cutting module 3, and when the cutting head body 62 is located in the cutting head mounting groove 32, the jet tube 63 fixedly arranged on the top of the cutting head body 62 is inclined toward the central axis direction of the cutting module 3; when the cutting head body 62 is installed in the cutting head mounting groove 32, the inclination angle of the jet tube 63 is α, and the jet The horizontal distance between the jet port of the tube 63 and the central axis of the cutting module 3 is L, and the values ​​of α and L are set according to the shape and size of the part to be cut; a positioning block 35 is fixedly provided at the rear of the cutting module 3, and the positioning block 35 is limitedly matched with the rear end of the cutting head body 62 set in the cutting head mounting groove 32, and the top of the cutting head body 62 is tightly fitted with the bottom of the pressure plate 33 set above the cutting head mounting groove 32. The two sides of the pressure plate 33 are connected to the cutting module 3 by fastening bolts 34, and the rear of the pressure plate 33 is limitedly matched with the front of the jet tube 62;

[0082] A cutting method is provided. The cutting method is based on the above-mentioned cutting device. The cutting device and the cutting method are used to perform cutting operations in a narrow and long cavity. The narrow and long cavity is provided with a left guide rail 51 and a right guide rail 52 that cooperate with the cutting module 3. The structure to be cut in the narrow and long cavity is located between the left guide rail 51 and the right guide rail 52. The cutting method specifically includes the following steps:

[0083] Connect the cutting module:

[0084] A water cutting head 6 is installed in a cutting head installation slot 32 at the top of the cutting module 3, and the jet tube 63 in the water cutting head 6 is aligned with the structure to be cut. The end of the high-pressure hose 2 far from the water cutting machine 1 is connected to the water inlet pipe 61, and the end of the cutting module 3 is connected to the traction mechanism 4;

[0085] First Cut:

[0086] Turn on the water jet cutting machine 1 and control the cutting module 3 to slide along the left guide rail 51 and the right guide rail 52 through the traction mechanism 4 to perform the first cutting of the structure to be cut inside the narrow and long cavity. After the first cutting is completed, turn off the water jet cutting machine 1;

[0087] Second Cut:

[0088] Take out the water cutting head 6 from the current cutting head installation slot 32, and set the water cutting head 6 in another cutting head installation slot 32 on the top of the cutting module 3, turn on the water cutting machine 1 and control the cutting module 3 to slide along the left guide rail 51 and the right guide rail 52 through the traction mechanism 4, and perform a second cut on the structure that needs to be cut inside the narrow and long cavity. After the second cut is completed, turn off the water cutting machine 1.

[0089] Example 2:

[0090] Example 2 is basically the same as Example 1, except that:

[0091] The guiding guide rail 5 includes a symmetrically arranged left guide rail 51 and a right guide rail 52, the inner side of the left guide rail 51 is provided with a recessed left slide groove 53, and the inner side of the right guide rail 52 is provided with a right slide groove 54 of the same shape as the left slide groove 53, and the two sides of the cutting module 3 are symmetrically provided with outwardly protruding guide surfaces 31, and the guide surfaces 31 match the left slide groove 53 and the right slide groove 54; the front and rear ends of the cutting module 3 are each provided with a connecting screw hole 36, and the front connecting screw hole 36 is threadedly matched with one end of the mounting screw 8, and the other end of the mounting screw 8 is fixedly connected to the pull ring 7, and the pull ring 7 is used to connect the traction rope 42.

[0092] Example 3:

[0093] Example 3 is basically the same as Example 2, except that:

[0094] The traction mechanism 4 includes a traction drum 41 and a traction rope 42 . The traction rope 42 is wound on the traction drum 41 . One end of the traction rope 42 is fixedly connected to the traction drum 41 , and the other end of the traction rope 42 is connected to the cutting module 3 .

[0095] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A cutting device, characterized in that: The cutting device comprises a water cutting machine (1), a high-pressure hose (2) and a traction mechanism (4); the water outlet of the water cutting machine (1) is connected to a water cutting head (6) via the high-pressure hose (2); the water cutting head (6) is used to enter the interior of a narrow and long cavity for cutting; and the traction mechanism (4) is used to traction the water cutting head (6) to move within the narrow and long cavity; The water cutting head (6) is arranged on the cutting module (3), the end of the cutting module (3) is connected to the traction mechanism (4), and the cutting module (3) can slide along the guide rail (5), and the guide rail (5) is arranged inside the narrow and long cavity; The water cutting head (6) comprises a water inlet pipe (61), a cutting head body (62) and a jet pipe (63), wherein the water inlet pipe (61) is fixedly arranged at the front of the cutting head body (62), and the rear of the cutting head body (62) is fixedly connected to the bottom of the jet pipe (63), the water outlet of the water cutting machine (1) is connected to the water inlet of the water inlet pipe (61) through a high-pressure hose (2), the water outlet of the water inlet pipe (61) is connected to the water inlet of the cutting head body (62), and the water outlet of the cutting head body (62) is connected to the water inlet of the jet pipe (63), and the water outlet of the jet pipe (63) is used for ejecting high-pressure fluid; Two cutting head mounting grooves (32) are symmetrically provided on the top of the cutting module (3), the cutting head body (62) is arranged in one of the cutting head mounting grooves (32), and the outer surface of the cutting head body (62) is clearance-matched with the inner surface of the cutting head mounting groove (32); The cutting head mounting groove (32) is inclined in a direction close to the central axis of the cutting module (3); when the cutting head body (62) is located in the cutting head mounting groove (32), the jet tube (63) fixedly arranged on the top of the cutting head body (62) is inclined in a direction close to the central axis of the cutting module (3); The guide rail (5) includes a symmetrically arranged left guide rail (51) and a right guide rail (52), the inner side of the left guide rail (51) is provided with a recessed left slide groove (53), the inner side of the right guide rail (52) is provided with a right slide groove (54) having the same shape as the left slide groove (53), and the two sides of the cutting module (3) are symmetrically provided with outwardly protruding guide surfaces (31), and the guide surfaces (31) match the left slide groove (53) and the right slide groove (54).

2. A cutting device according to claim 1, characterized in that: When the cutting head body (62) is installed in the cutting head installation groove (32), the inclination angle of the jet tube (63) is α, and the transverse distance between the injection port of the jet tube (63) and the central axis of the cutting module (3) is L. The values ​​of α and L are set according to the shape and size of the part to be cut.

3. A cutting device according to claim 1, characterized in that: A positioning block (35) is fixedly provided at the rear of the cutting module (3), and the positioning block (35) is limitedly matched with the rear end of the cutting head body (62) arranged in the cutting head installation groove (32). The top of the cutting head body (62) is tightly fitted with the bottom of the pressure plate (33) arranged above the cutting head installation groove (32). Both sides of the pressure plate (33) are connected to the cutting module (3) by fastening bolts (34), and the rear of the pressure plate (33) is limitedly matched with the front of the jet tube (63).

4. A cutting device according to claim 1, characterized in that: The traction mechanism (4) comprises a traction roller (41) and a traction rope (42), wherein the traction rope (42) is wound on the traction roller (41), one end of the traction rope (42) is fixedly connected to the traction roller (41), and the other end of the traction rope (42) is connected to the cutting module (3).

5. A cutting device according to claim 4, characterized in that: A pull ring (7) is fixedly provided at each of the front and rear ends of the cutting module (3), and the pull ring (7) is used to connect a traction rope (42).

6. A cutting method based on the cutting device according to any one of claims 1 to 5, characterized in that: The cutting method is used to perform a cutting operation in a narrow and long cavity. A left guide rail (51) and a right guide rail (52) that cooperate with a cutting module (3) are provided inside the narrow and long cavity. The structure to be cut inside the narrow and long cavity is located between the left guide rail (51) and the right guide rail (52). The cutting method specifically comprises the following steps: Connect the cutting module: A water cutting head (6) is arranged in a cutting head mounting groove (32) on the top of the cutting module (3), and the jet tube (63) in the water cutting head (6) is aligned with the structure to be cut, one end of the high-pressure hose (2) is connected to the water cutting machine (1) with the water inlet pipe (61), and the end of the cutting module (3) is connected to the traction mechanism (4); First Cut: Turning on the water jet cutting machine (1) and controlling the cutting module (3) to slide along the left guide rail (51) and the right guide rail (52) through the traction mechanism (4) to perform a first cut on the structure to be cut inside the narrow and long cavity, and turning off the water jet cutting machine (1) after the first cut is completed; Second Cut: The water cutting head (6) is taken out from the current cutting head installation slot (32), and the water cutting head (6) is set in another cutting head installation slot (32) on the top of the cutting module (3), the water cutting machine (1) is turned on, and the cutting module (3) is controlled by the traction mechanism (4) to slide along the left guide rail (51) and the right guide rail (52), and the structure to be cut inside the narrow and long cavity is cut for the second time. After the second cutting is completed, the water cutting machine (1) is turned off.

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