A mobile water cutting machine

Abstract

This invention belongs to the technical field of waterjet cutting machines, specifically relating to a portable waterjet cutting machine, including a pressurizing device, a sand control device, and a water gun, which are connected by pipelines. It also includes a water gun driving device, comprising a chassis, a water gun fixing assembly, and a drive motor. Support wheels are rotatably connected to the chassis; a support plate is fixedly connected to the chassis, and a drive sprocket is rotatably connected to the support plate; the chassis is connected to the support sprocket via the support assembly, and a chain connects the drive sprocket and the support sprocket; the chassis is equipped with a magnetic suction assembly. By providing the magnetic suction assembly, the chassis can be firmly attached to the pipe to be cut during installation without manual assistance; after the chain is wrapped around the pipe, the attachment is released, ensuring stable movement of the chassis along the pipe, achieving quick and convenient installation and preparation for operation.

Description

Technical Field

[0001] This invention belongs to the field of waterjet cutting machine technology, and specifically relates to a portable waterjet cutting machine. Background Technology

[0002] Waterjet cutting machines, also known as water jet cutting machines, are cold processing equipment that uses high-pressure water jets for cutting. Existing waterjet cutting equipment has limitations in both structure and usage.

[0003] For example, patent CN106272109A discloses a separate waterjet cutting machine that separates the water source filtration and storage device from the electric abrasive mixing device, which solves the problem of large machine size and inconvenient movement to a certain extent. However, its cutting execution part (such as the water gun) still needs to be manually operated, making it difficult to guarantee the stability and accuracy of the cutting trajectory in pipe circumferential cutting operations.

[0004] For example, patents CN109129710A and CN217020744U disclose walking devices for pipe cutting, which drive the cutter to move in a circle along the outer wall of the pipe through the cooperation of a chain and a sprocket, thus achieving automatic circumferential cutting. However, such devices are usually complex in structure and heavy in weight, often requiring multiple people to support them when installed on the pipe, and also requiring a certain amount of operating space.

[0005] In addition, although patent CN211639521U further separates the pressurization component and sand control component to improve mobility, its water gun drive method is singular and cannot flexibly meet the cutting needs of workpieces of different sizes and shapes (such as plate-shaped).

[0006] Patent CN223656221U provides a manually controlled magnetic cutting walking device suitable for straight cutting of steel plates, but its installation, positioning and driving stability are insufficient when applied to pipe circumferential cutting.

[0007] In summary, existing waterjet cutting equipment has the following shortcomings when dealing with complex working conditions: On the one hand, automated equipment for pipe cutting is usually inconvenient to install and heavy, requiring manual assistance for fixation; on the other hand, the equipment has relatively simple functions and cannot simultaneously meet the dual needs of pipe circumferential cutting and small workpiece (such as plate-shaped objects) cutting, and the drive mode (electric or manual) cannot be switched, which limits its versatility and operational flexibility in different scenarios. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a portable waterjet cutting machine that can meet various cutting needs and facilitates switching between installation and drive modes.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A portable waterjet cutting machine includes a pressurizing device, a sand control device, and a water gun, which are connected by pipelines. It also includes a water gun driving device, which comprises a vehicle body, a water gun fixing assembly, and a drive motor. Support wheels are rotatably connected to the vehicle body. A support plate is fixedly connected to the vehicle body, and a drive sprocket is rotatably connected to the support plate. The vehicle body is connected to the support sprocket via the support assembly, and a chain connects the drive sprocket and the support sprocket. The vehicle body is equipped with a magnetic suction component, which allows the vehicle body to be magnetically attached to the object to be cut during installation; a mounting base is fixedly connected to the support plate, and the drive motor is detachably connected to the mounting base; a connecting sleeve is fixedly connected to the drive sprocket on the same axis. The water gun fixing assembly includes a magnetic base and a clamping assembly; the water gun is clamped by the clamping assembly; the magnetic base is detachably connected to the vehicle body; the clamping assembly is mounted on the magnetic base; the magnetic base is provided with a transmission assembly connected to the clamping assembly; When the output shaft of the drive motor is connected to the connecting sleeve, it drives the drive sprocket to rotate; when the output shaft of the drive motor is connected to the transmission assembly, it drives the clamping assembly and the water gun to rotate through the transmission assembly.

[0010] The magnetic attraction assembly includes a magnet, a drive rod, and a return spring; the magnet is fixedly connected to the lower end of the drive rod, which has a threaded section and a smooth section; the vehicle body has a threaded hole connected to the drive rod; the return spring is sleeved on the drive rod, with its two ends abutting against the drive rod and the vehicle body, respectively.

[0011] The clamping assembly includes a clamping cylinder and a fixing rod; the water gun is inserted into the clamping cylinder, and the clamping cylinder is provided with a fixing screw that cooperates with the water gun; a support rod is fixedly connected to the magnetic base, and the fixing rod and the support rod are inserted into each other and fixed by screws; the clamping cylinder and the fixing rod are rotatably connected.

[0012] It also includes a manual drive rod, which is rotatably connected to the clamping cylinder. The manual drive rod is equipped with a locking device, which fixes the manual drive rod to the clamping cylinder or the fixing rod.

[0013] The manual drive rod is a telescopic rod; the locking device includes a slider and a limiting spring, the slider is slidably connected to the manual drive rod, and the two ends of the limiting spring are fixedly connected to the slider and the manual drive rod respectively; an insert plate and a locking pin are fixedly connected to the slider, a first limiting plate that cooperates with the insert plate is provided on the clamping cylinder, and a second limiting plate that cooperates with the locking pin is provided on the fixed rod.

[0014] The mounting base is provided with a fixing bracket connected to the drive motor. One side of the fixing bracket is provided with a first retaining plate, and the housing of the drive motor is provided with a corresponding retaining groove. The other side of the fixing bracket is provided with a fixing knob, and the housing of the drive motor is provided with a corresponding fixing hole.

[0015] The transmission assembly includes a transmission sleeve and transmission gears. There are two transmission gears that mesh with each other and are fixedly connected to the transmission sleeve and the clamping cylinder, respectively. The transmission sleeve is rotatably connected to the fixed rod. Both the transmission sleeve and the connecting sleeve are provided with spline grooves, and the output shaft of the drive motor is provided with spline teeth.

[0016] The magnetic base is inserted into the vehicle body, and a connecting shaft is fixedly connected to the vehicle body; at least two connecting shafts are provided; a movable card seat is slidably connected to the magnetic base, and a first adjusting screw is threadedly connected to the magnetic base, the end of the first adjusting screw being rotatably connected to the movable card seat; a second card plate is provided on the movable card seat and connected to the card slot.

[0017] The movable card holder is provided with a third card plate, and the plug shaft adjacent to the third card plate is provided with a corresponding groove.

[0018] The support assembly includes an adjustment assembly and a pair of spring supports; the pair of spring supports are arranged opposite to each other and spaced apart, each spring support includes a support column and a support spring, the support column is fixedly connected to the vehicle body, a support pad and a connecting plate are slidably connected on the support column, the support spring is disposed between the support pad and the connecting plate, and a lock nut is fixedly connected to the upper end of the support column; the support sprocket is rotatably connected to the connecting plate. The adjustment assembly includes a second adjustment screw and a movable insert plate. The movable insert plate is slidably connected to the vehicle body, the second adjustment screw is threadedly connected to the vehicle body, and the end of the adjustment screw is rotatably connected to the movable insert plate. The support column is provided with a through groove that mates with the movable insert plate, the end of the movable insert plate is provided with an inclined surface, and a protrusion that mates with the inclined surface is fixedly connected to the support pad.

[0019] Compared with the prior art, the beneficial effects of this invention are: By installing magnetic components on the vehicle body, the vehicle body can be firmly attached to the pipe to be cut during installation without the need for manual assistance; after the chain is wrapped around, the attachment is released, ensuring that the vehicle body can move stably along the pipe, achieving quick and convenient installation and work preparation.

[0020] By incorporating a detachable water gun mounting assembly and a drive motor, this device offers two operating modes. When cutting pipes, the drive motor connects to the drive sprocket on the vehicle body for automated circumferential cutting. When cutting small plate-like objects, the drive motor can be connected to the water gun mounting assembly, secured using a magnetic base, and then the transmission assembly drives the water gun to rotate and cut. This multi-functional design effectively expands the equipment's application range.

[0021] Based on the electric drive, a manual drive lever has been added, equipped with a locking device. During operation, the electric or manual drive mode can be selected according to site conditions. Simultaneously, the manual drive lever also functions as a limit switch, locking the water gun in electric ring cutting mode to prevent accidental rotation, ensuring the stability and quality of the cutting process.

[0022] By incorporating a support assembly with spring supports, automatic tensioning and buffering are achieved during chain drive, ensuring the smooth movement of the vehicle along the pipeline. Meanwhile, key components such as the water gun fixing assembly and drive motor adopt a detachable quick-assembly structure, facilitating rapid on-site assembly and reducing the vehicle's weight during installation. Combined with magnetic attachments, the entire operation can be completed by a single person. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the water gun driving device of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a top view of the water gun driving device of the present invention; Figure 5 yes Figure 4 Sectional view along the middle AA direction; Figure 6 yes Figure 5 A magnified view of a section at point B in the middle; Figure 7 yes Figure 4 Sectional view along the BB direction; Figure 8 yes Figure 4 A cross-sectional view along the CC direction; Figure 9 This is a schematic diagram of the connection structure between the drive motor and the transmission assembly of the present invention; Figure 10 This is a schematic diagram of the structure of the manual drive lever of the present invention; Figure 11 This is a schematic diagram of the locking device of the present invention; The components are as follows: 1 is a pressurizing device, 2 is a sand control device, 3 is a water gun, 4 is a water gun drive device, 5 is a vehicle body, 6 is a water gun fixing assembly, 60 is a magnetic base, 61 is a clamping assembly, 610 is a clamping cylinder, 611 is a fixing rod, 612 is a fixing set screw, 62 is a transmission assembly, 620 is a transmission sleeve, 621 is a transmission gear, 7 is a drive motor, 8 is a support plate, 9 is a drive sprocket, 10 is a support assembly, 100 is an adjusting assembly, 101 is a spring support, 102 is a support column, 103 is a support spring, 104 is a support washer, 105 is a connecting plate, 106 is a lock nut, 107 is a second adjusting screw, 108 is a movable insert plate, and 109 is a protrusion. 11 is a support sprocket, 12 is a magnetic suction assembly, 120 is a magnet, 121 is a drive rod, 122 is a return spring, 13 is a mounting base, 14 is a connecting sleeve, 15 is a support rod, 16 is a manual drive rod, 17 is a locking device, 170 is a slider, 171 is a limit spring, 172 is an insert plate, 173 is a locking pin, 174 is a first limit plate, 175 is a second limit plate, 18 is a fixed card seat, 180 is a first card plate, 181 is a card slot, 182 is a fixed knob, 183 is a fixed hole, 19 is a movable card seat, 190 is a first adjusting screw, 191 is a second card plate, 192 is a third card plate, 20 is a plug-in shaft, 21 is a pipe, and 22 is a chain. Detailed Implementation

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] like Figure 1 As shown, a portable waterjet cutting machine includes a pressurizing device 1, a sand control device 2, and a water gun 3, which are connected by pipelines. The pressurizing device 1, sand control device 2, and water gun 3 can all utilize existing structures. The pressurizing device 1 and sand control device 2 are equipped with casters at their bottoms for easy movement. The pressurizing device 1 is connected to a water source. The sand control device 2 contains abrasive (diamond powder). Water enters the sand control device 2 after passing through the pressurizing device, carrying the abrasive inside into the water gun 3, which then sprays out from the outlet of the water gun 3 to perform waterjet cutting on the object.

[0026] like Figure 2 , Figure 4 and Figure 5As shown, it also includes a water gun drive device 4, which includes a vehicle body 5, a water gun fixing assembly 6, and a drive motor 7; a support wheel is rotatably connected to the vehicle body 5; the support wheel mainly contacts the pipe to be cut to reduce the resistance to movement. A support plate 8 is fixedly connected to the vehicle body 5, and a drive sprocket 9 is rotatably connected to the support plate 8; a support sprocket 11 is connected to the vehicle body 5 through a support assembly 10, and a chain (22) is connected between the drive sprocket 9 and the support sprocket 11.

[0027] The vehicle body 5 is equipped with a magnetic suction assembly 12, which attracts the vehicle body 5 to the object to be cut (mainly pipes) during cutting and installation. A mounting base 13 is fixedly connected to the support plate 8, and the drive motor 7 is detachably connected to the mounting base 13, allowing the drive motor 7 to be installed and removed as needed. A connecting sleeve 14 is coaxially fixedly connected to the drive sprocket 9 for connecting to the output shaft of the drive motor 7.

[0028] The water gun fixing assembly 6 includes a magnetic base 60 and a clamping assembly 61; the clamping assembly 61 clamps the water gun 3. The magnetic base 60 is detachably connected to the vehicle body 5, and can be disassembled and assembled as needed. The clamping assembly 61 is mounted on the magnetic base 60 and clamps the water gun 3; the magnetic base 60 is equipped with a transmission assembly 62 connected to the clamping assembly 61. The magnetic base 60 is a structure in the prior art, and it is equipped with a knob. Rotating the knob allows the magnetic base 60 to attract or disconnect (not attract) objects.

[0029] The device has two main working modes: one for cutting thicker pipes and the other for cutting smaller, plate-shaped objects.

[0030] like Figure 9 As shown, in the first method, when cutting pipe 21, the vehicle body 5 is attracted to the object to be cut by the magnetic suction component 12; then the chain (22) is passed around the pipe, the drive sprocket 9 and the support sprocket 11, and the two ends of the chain (22) are connected to form a loop. The magnetic suction component 12 is easy to install and can save manual support compared to the prior art. After the two ends of the chain (22) are connected to form a loop, the magnetic suction component 12 is released from the object to avoid affecting the movement of the vehicle body 5 along the pipe.

[0031] After the vehicle body 5 and the chain (22) are installed, first connect the magnetic base 60 to the vehicle body 5; then connect the drive motor 7 to the mounting base 13, and connect the output shaft of the drive motor 7 to the connecting sleeve 14. At this time, the output shaft of the drive motor 7 will drive the drive sprocket 9 and the support sprocket 11 to rotate, so that the vehicle body 5 moves along the pipeline to perform water cutting operations.

[0032] The detachable connection between the magnetic base 60 and the drive motor 7 can reduce the weight when installing the vehicle body 5, ensuring that the magnetic assembly 12 can attract the vehicle body 5 onto the pipe.

[0033] like Figure 10 As shown, in the second case, when cutting smaller objects such as plates, the vehicle body 5 is not required; therefore, the magnetic base 60 and the drive motor 7 can be removed from the vehicle body 5. Then, when the output shaft of the drive motor 7 is connected to the transmission assembly 62, it is finally attracted to the object to be cut (or surrounding objects that can be attracted) by the magnetic base 60, and the transmission assembly 62 drives the clamping assembly 61 and the water gun 3 to rotate to perform water cutting.

[0034] Furthermore, such as Figure 5 As shown, the magnetic attraction assembly 12 includes a magnet 120, a drive rod 121, and a return spring 122; the magnet 120 is fixedly connected to the lower end of the drive rod 121. The drive rod 121 has a threaded section and a smooth section, and the vehicle body 5 is provided with a threaded hole connected to the drive rod 121. The threaded section and the threaded hole are threadedly connected, and the smooth section and the threaded hole are slidably connected.

[0035] A return spring 122 is sleeved on the outside of the drive rod 121, with its two ends abutting against the drive rod 121 and the vehicle body 5, respectively. When it needs to be attracted to a pipe, the drive rod 121 is pressed downwards, causing the smooth section to move along the threaded hole until the threaded section contacts the threaded hole. Then, the pressure is maintained while the drive rod 121 is rotated, causing the threaded section on the drive rod 121 to thread into the threaded hole. After this operation, the magnet 120 moves downwards, shortening the distance between itself and the pipe, thus attracting the pipe.

[0036] When it is necessary to release the magnet from the pipe, the threaded section is separated from the threaded hole by rotating the drive rod 121 in the opposite direction; then, under the action of the return spring 122 and manual (pull-up) action, the magnet 120 is moved upward and reset. As the distance between the magnet 120 and the pipe increases, the magnet is released from the pipe.

[0037] Furthermore, such as Figure 2 and Figure 10 As shown, the clamping assembly 61 includes a clamping cylinder 610 and a fixing rod 611; the water gun 3 is inserted into the clamping cylinder 610, and the clamping cylinder 610 is provided with a fixing screw 612 that cooperates with the water gun 3; a support rod 15 is fixedly connected to the magnetic base 60, and the fixing rod 611 and the support rod 15 are inserted into each other and fixed by screws; the clamping cylinder 610 and the fixing rod 611 are rotatably connected.

[0038] Furthermore, the second type of cutting of smaller objects, such as plate-shaped objects, is driven by the drive motor 7; of course, manual driving can also be used as needed; the specific structure is as follows: like Figure 11 As shown, it also includes a manual drive rod 16, which is rotatably connected to the clamping cylinder 610. The manual drive rod 16 is provided with a locking device 17, which fixes the manual drive rod 16 to the clamping cylinder 610 or the fixing rod 611.

[0039] When performing the second type of cutting operation, rotate the manual drive lever 16 to make it 180° apart from the clamping cylinder 610, and fix the manual drive lever 16 to the clamping cylinder 610 by the locking device 17. At this time, the clamping cylinder 610 and the water gun 3 can be rotated by holding the manual drive lever 16.

[0040] When performing the first type of cutting operation, rotate the manual drive lever 16 to make it 90° with the clamping cylinder 610, and fix the manual drive lever 16 to the fixed rod 611 through the locking device 17, which restricts the rotation of the clamping cylinder 610 and the water gun 3, so as to ensure that the water gun 3 cuts along the pipe under the drive of the vehicle body 5.

[0041] Furthermore, the manual drive lever 16 is a telescopic lever that can be extended or retracted as needed to increase its length.

[0042] like Figure 3 , Figure 5 and Figure 11 As shown, the locking device 17 includes a slider 170 and a limiting spring 171. The slider 170 is slidably connected to the manual drive rod 16, and the two ends of the limiting spring 171 are fixedly connected to the slider 170 and the manual drive rod 16, respectively.

[0043] When it is necessary to fix the manual drive rod 16 to the clamping cylinder 610, first push the slider 170 to move so that the limiting spring 171 is compressed, then the manual drive rod 16 and the clamping cylinder 610 are at 180°, and finally the external force is removed. The limiting spring 171 releases its elastic potential energy to push the slider 170 to move in the opposite direction, so that the insert plate 172 and the first limiting plate 174 on the clamping cylinder 610 are inserted to fix the position.

[0044] When it is necessary to fix the manual drive rod 16 to the fixed rod 611, first push the slider 170 to move so that the limiting spring 171 is compressed, then the manual drive rod 16 and the clamping cylinder 610 are at 90°, and finally the external force is removed. The limiting spring 171 releases its elastic potential energy to push the slider 170 to move in the opposite direction, so that the locking pin 173 is inserted into the second limiting plate 175 on the fixed rod 611 to fix the position.

[0045] Furthermore, such as Figure 7 As shown, various structures can be used to achieve a detachable connection between the mounting base 13 and the drive motor 7 (housing). The following structural configurations are specifically adopted: The mounting base 13 is provided with a fixing bracket 18 connected to the drive motor 7, and the fixing bracket 18 is fixedly connected to the mounting base 13. One side of the fixing bracket 18 is provided with a first retaining plate 180, and the housing of the drive motor 7 is provided with a corresponding retaining groove 181, which engages with the first retaining plate 180. The other side of the fixing bracket 18 is threadedly connected with a fixing knob 182, and the housing of the drive motor 7 is provided with a corresponding fixing hole 183.

[0046] During installation, first insert the slot 181 on the housing of the drive motor 7 into the first card plate 180, support the housing of the drive motor 7 through the fixing bracket 18, and connect the connecting sleeve 14 to the output shaft of the drive motor 7; finally, tighten the fixing knob 182 so that the end of the fixing knob 182 extends into the fixing hole 183 to complete the fixing.

[0047] Furthermore, such as Figure 2 , Figure 5 ,and Figure 10 As shown, the transmission assembly 62 includes a transmission sleeve 620 and two transmission gears 621. The two transmission gears 621 mesh with each other and are fixedly connected to the transmission sleeve 620 and the clamping cylinder 610, respectively. A rotating shaft is fixed on the clamping cylinder 610 and is rotatably connected to the fixed rod 611 through the rotating shaft. The transmission gears 621 on the clamping cylinder 610 are coaxial with the rotating shaft.

[0048] The transmission sleeve 620 is rotatably connected to the fixed rod 611; both the transmission sleeve 620 and the connecting sleeve 14 are provided with spline grooves, and the output shaft of the drive motor 7 is provided with spline teeth.

[0049] After the spline teeth on the output shaft of the drive motor 7 are connected to the spline groove on the transmission sleeve 620, the rotation of the output shaft of the drive motor 7 can drive the clamping cylinder 610 and the water gun 3 to rotate through the two transmission gears 621 (if a manual drive rod 16 is provided, the manual drive rod 16 is at 180° with the clamping cylinder 610).

[0050] Furthermore, such as Figure 5 and Figure 8 As shown, the magnetic base 60 can be detachably connected to the vehicle body 5 in various ways, specifically using the following connection methods: The magnetic base 60 is inserted into the vehicle body 5, and a connecting shaft 20 is fixedly connected to the vehicle body 5. The magnetic base 60 has corresponding connecting holes; the connecting holes and the connecting shaft 20 are connected. When installation is required, first insert the magnetic base 60 into the connecting shaft 20, and then rotate the knob on the magnetic base 60 to make the magnetic base 60 adhere to the vehicle body 5.

[0051] At least two insertion shafts 20 are provided. A movable card holder 19 is slidably connected to the magnetic base 60. The function of the movable card holder 19 is to support and fix the drive motor 7.

[0052] A first adjusting screw 190 is threaded onto the magnetic base 60. The end of the first adjusting screw 190 is rotatably connected to the movable card seat 19. The movable card seat 19 can be moved by rotating the first adjusting screw 190.

[0053] In the second operating mode, when it is necessary to connect the drive motor 7 to the transmission sleeve 620, first place the drive motor 7 on the movable card holder 19, then insert the spline teeth on the output shaft of the drive motor 7 into the spline groove on the transmission sleeve 620; finally, rotate the first adjusting screw 190 to move the movable card holder 19 toward the drive motor 7 until the second card plate 191 is inserted into the card slot 181 of the drive motor 7, thus completely fixing the drive motor 7.

[0054] Furthermore, such as Figure 6 and Figure 10 As shown, the movable card holder 19 is provided with a third card plate 192, and the insertion shaft 20 adjacent to the third card plate 192 is provided with a corresponding groove. In the first operating mode, by rotating the first adjusting screw 190, the movable card holder 19 is moved toward the insertion shaft 20 until the third card plate 192 is inserted into the groove of the insertion shaft 20, fixing the magnetic base 60 to the insertion shaft 20 and restricting the movement of the magnetic base 60 along the insertion shaft 20.

[0055] Furthermore, such as Figure 2 and Figure 8 As shown, the support assembly 10 includes an adjustment assembly 100 and a pair of spring supports 101; the pair of spring supports 101 are arranged opposite to each other and spaced apart, and the support sprocket 11 is located between the pair of spring supports 101.

[0056] The spring support 101 includes a support column 102 and a support spring 103. The lower end of the support column 102 is fixedly connected to the vehicle body 5. A support washer 104 and a connecting plate 105 are slidably connected to the support column 102, with the connecting plate 105 positioned above the support washer 104. The support spring 103 is sleeved on the support column 102 and located between the support washer 104 and the connecting plate 105, with both ends of the support spring 103 abutting against the support washer 104 and the connecting plate 105, respectively. A lock nut 106 is fixedly connected to the upper end of the support column 102, preventing the connecting plate 105 from detaching from the support column 102 and serving as a limiting element. Both ends of the support sprocket 11 are rotatably connected to the corresponding connecting plates 105.

[0057] The spring support 101 mainly serves to tension and provide some cushioning. To adjust the pre-compression of the support spring 103, the following structure is also provided: The adjustment assembly 100 includes a second adjusting screw 107 and a movable insert plate 108. The movable insert plate 108 is slidably connected to the vehicle body 5, and the second adjusting screw 107 is threadedly connected to the vehicle body 5. The end of the adjusting screw is rotatably connected to the movable insert plate 108, and the movable insert plate 108 can be moved by rotating the second adjusting screw 107. The movable insert plate 108 is specifically C-shaped. A through groove is provided on the support column 102 to cooperate with the movable insert plate 108, and both ends of the movable insert plate 108 can extend into the through groove. An inclined surface is provided at the end of the movable insert plate 108, and a protrusion 109 that cooperates with the inclined surface is fixedly connected to the support pad 104.

[0058] By moving the insert plate 108, the contact position between the protrusion 109 and the inclined surface can be changed, thereby changing the high end of the support pad 104 and adjusting the support spring 103 and the amount of compression.

[0059] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A portable waterjet cutting machine, comprising a pressurizing device (1), a sand control device (2), and a water gun (3), wherein the pressurizing device (1), the sand control device (2), and the water gun (3) are connected by pipelines; characterized in that: It also includes a water gun drive device (4), which includes a vehicle body (5), a water gun fixing assembly (6), and a drive motor (7); a support wheel is rotatably connected to the vehicle body (5); a support plate (8) is fixedly connected to the vehicle body (5), and a drive sprocket (9) is rotatably connected to the support plate (8); a support sprocket (11) is connected to the vehicle body (5) through a support assembly (10), and a chain (22) is connected between the drive sprocket (9) and the support sprocket (11); The vehicle body (5) is provided with a magnetic suction assembly (12). During installation, the vehicle body (5) is attracted to the object to be cut by the magnetic suction assembly (12). The support plate (8) is fixedly connected with a mounting base (13). The drive motor (7) is detachably connected to the mounting base (13). The drive sprocket (9) is coaxially fixedly connected with a connecting sleeve (14). The water gun fixing assembly (6) includes a magnetic base (60) and a clamping assembly (61); the water gun (3) is clamped by the clamping assembly (61); the magnetic base (60) is detachably connected to the vehicle body (5); the clamping assembly (61) is set on the magnetic base (60); the magnetic base (60) is provided with a transmission assembly (62) connected to the clamping assembly (61); When the output shaft of the drive motor (7) is connected to the connecting sleeve (14), it drives the drive sprocket (9) to rotate; when the output shaft of the drive motor (7) is connected to the transmission assembly (62), it drives the clamping assembly (61) and the water gun (3) to rotate through the transmission assembly (62).

2. The portable waterjet cutting machine according to claim 1, characterized in that: The magnetic attraction assembly (12) includes a magnet (120), a drive rod (121), and a return spring (122). The magnet (120) is fixedly connected to the lower end of the drive rod (121), and the drive rod (121) has a threaded section and a smooth section. The vehicle body (5) is provided with a threaded hole connected to the drive rod (121). The return spring (122) is sleeved on the drive rod (121), and the two ends of the return spring (122) abut against the drive rod (121) and the vehicle body (5) respectively.

3. A portable waterjet cutting machine according to claim 1, characterized in that: The clamping assembly (61) includes a clamping cylinder (610) and a fixing rod (611); the water gun (3) is inserted into the clamping cylinder (610), and the clamping cylinder (610) is provided with a fixing screw (612) that cooperates with the water gun (3); a support rod (15) is fixedly connected to the magnetic base (60), and the fixing rod (611) and the support rod (15) are inserted into each other and fixed by screws; the clamping cylinder (610) and the fixing rod (611) are rotatably connected.

4. A portable waterjet cutting machine according to claim 3, characterized in that: It also includes a manual drive rod (16), which is rotatably connected to the clamping cylinder (610). The manual drive rod (16) is provided with a locking device (17), which fixes the manual drive rod (16) to the clamping cylinder (610) or the fixing rod (611) through the locking device (17).

5. A portable waterjet cutting machine according to claim 4, characterized in that: The manual drive rod (16) is a telescopic rod; the locking device (17) includes a slider (170) and a limiting spring (171). The slider (170) is slidably connected to the manual drive rod (16), and the two ends of the limiting spring (171) are fixedly connected to the slider (170) and the manual drive rod (16) respectively. A plug plate (172) and a locking pin (173) are fixedly connected on the slider (170). A first limiting plate (174) that cooperates with the plug plate (172) is provided on the clamping cylinder (610), and a second limiting plate (175) that cooperates with the locking pin (173) is provided on the fixing rod (611).

6. A portable waterjet cutting machine according to claim 3, characterized in that: The mounting base (13) is provided with a fixed bracket (18) connected to the drive motor (7). One side of the fixed bracket (18) is provided with a first card plate (180), and the outer shell of the drive motor (7) is provided with a corresponding card slot (181). The other side of the fixed bracket (18) is provided with a fixing knob (182), and the outer shell of the drive motor (7) is provided with a corresponding fixing hole (183).

7. A portable waterjet cutting machine according to claim 6, characterized in that: The transmission assembly (62) includes a transmission sleeve (620) and a transmission gear (621). There are two transmission gears (621), which mesh with each other. The two transmission gears (621) are fixedly connected to the transmission sleeve (620) and the clamping cylinder (610) respectively. The transmission sleeve (620) is rotatably connected to the fixing rod (611). The transmission sleeve (620) and the connecting sleeve (14) are both provided with spline grooves, and the output shaft of the drive motor (7) is provided with spline teeth.

8. A portable waterjet cutting machine according to claim 7, characterized in that: The magnetic base (60) is inserted into the vehicle body (5), and the vehicle body (5) is fixedly connected to the insertion shaft (20); there are at least two insertion shafts (20); a movable card seat (19) is slidably connected to the magnetic base (60), and a first adjusting screw (190) is threadedly connected to the magnetic base (60), and the end of the first adjusting screw (190) is rotatably connected to the movable card seat (19); the movable card seat (19) is provided with a second card plate (191) connected to the card slot (181).

9. A portable waterjet cutting machine according to claim 8, characterized in that: The movable card holder (19) is provided with a third card plate (192), and the plug shaft (20) adjacent to the third card plate (192) is provided with a corresponding groove.

10. A portable waterjet cutting machine according to claim 1, characterized in that: The support assembly (10) includes an adjustment assembly (100) and a pair of spring supports (101); the pair of spring supports (101) are arranged opposite to each other and spaced apart, the spring support (101) includes a support column (102) and a support spring (103), the support column (102) is fixedly connected to the vehicle body (5), a support pad (104) and a connecting plate (105) are slidably connected on the support column (102), the support spring (103) is disposed between the support pad (104) and the connecting plate (105), and a lock nut (106) is fixedly connected to the upper end of the support column (102); the support sprocket (11) is rotatably connected to the connecting plate (105); The adjustment assembly (100) includes a second adjustment screw (107) and a movable insert plate (108). The movable insert plate (108) is slidably connected to the vehicle body (5), and the second adjustment screw (107) is threadedly connected to the vehicle body (5). The end of the adjustment screw is rotatably connected to the movable insert plate (108). The support column (102) is provided with a through groove that cooperates with the movable insert plate (108). The end of the movable insert plate (108) is provided with an inclined surface. The support pad (104) is fixedly connected with a protrusion (109) that cooperates with the inclined surface.

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