Self-propelled hard filler temperature stress joint cutting device

Abstract

The invention belongs to the technical field of hydraulic engineering foundation joint construction equipment, and particularly relates to a self-propelled hard filler temperature stress joint cutting device which comprises a walking rack, a control cabinet is arranged on the upper rear portion of the walking rack, a joint cutting device is arranged on the upper middle portion of the walking rack, and a hydraulic system is arranged on the upper front portion of the walking rack. The joint cutting device slides on the walking rack in the walking direction, the hydraulic system provides hydraulic power for the joint cutting device and the walking rack, and the control cabinet controls the walking rack, the joint cutting device and the hydraulic system to work. Through the synergistic effect of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the pushed frame and the T-shaped sliding rail, alternate stepping type advancing of the joint cutting device and the walking rack is achieved, manual intervention of the moving process is not needed, continuous and automatic joint cutting operation is achieved, the construction efficiency is greatly improved, and the joint cutting device can be popularized and applied to the field of hard filler temperature stress joint construction.

Description

Technical Field

[0001] This invention belongs to the technical field of foundation joint construction equipment for water conservancy projects, specifically relating to a self-propelled rigid filler temperature stress joint cutting device. Background Technology

[0002] In the construction of BCR rigid fill dams, the establishment of temperature stress joints is crucial to prevent cracks in the dam body caused by temperature changes. Currently, several cutting devices have been developed to create temperature stress joints in the BCR fill layer, such as the "BCR Rigid Fill Temperature Stress Joint Cutting Device" proposed in Chinese Patent CN202320115002.X. This device combines a force-transmitting cutter with a low-frequency vibrator, utilizing vibration and compression principles to cut joints in the un-set BCR fill layer. It offers advantages such as simple operation, low energy consumption, and close integration with construction procedures.

[0003] However, this device still has the following shortcomings in practical applications: 1. Reliance on manual operation, resulting in limited efficiency: The device is equipped with a handrail support, requiring manual pushing and cutting. In large-area dam construction, manual operation is not only labor-intensive, but the cutting speed is also limited by personnel movement and operational consistency, making it difficult to achieve efficient and continuous cutting operations, thus affecting the overall construction progress.

[0004] 2. Insufficient control over kerf depth and precision: Although the device is equipped with a limiting plate to control the kerf depth, in actual construction, due to the unevenness of the filler layer and differences in operator experience, it is difficult to ensure consistent kerf depth and straightness. The lack of an automatic guidance and depth adjustment mechanism easily leads to fluctuations in kerf quality, affecting the stress release effect.

[0005] 3. Vibration transmission and structural stiffness issues: The low-frequency vibrator is connected to the force-transmitting cutter through the mounting plate. Although it is equipped with stiffening ribs to enhance stiffness, the connection may still loosen or suffer fatigue damage under long-term high-frequency vibration, affecting the vibration transmission efficiency and cutting quality, and even causing equipment damage.

[0006] 4. Poor adaptability and difficulty in handling complex working conditions: The structure of this device is relatively simple and does not consider the impact of different filler densities, moisture contents, or slope variations on the cutting effect. When the initial setting time of the filler varies or the layer thickness is inconsistent, the existing device cannot adaptively adjust the vibration frequency or cutting parameters, which can easily lead to incomplete cutting or damage to the filler surface.

[0007] In conclusion, there is an urgent need to develop a new type of self-propelled rigid filler temperature stress joint cutting device with functions such as autonomous walking, intelligent control, and high-precision cutting, in order to further improve construction efficiency and project quality. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the above-mentioned prior art and provide a self-propelled rigid filler temperature stress joint cutting device with reasonable design, simple structure, autonomous walking and high-precision cutting.

[0009] The technical solution adopted to solve the above technical problems is: a self-propelled rigid filler temperature stress joint cutting device, including a walking frame, a control cabinet is set at the upper rear part of the walking frame, a cutting device is set at the upper middle part, and a hydraulic system is set at the upper front part. The cutting device slides on the walking frame along the walking direction. The hydraulic system provides hydraulic power to the cutting device and the walking frame. The control cabinet controls the operation of the cutting device, the hydraulic system, and the walking frame.

[0010] The walking frame of the present invention includes a frame body, with two sets of walking wheels at the lower part of the frame body. T-shaped slide rails are provided on both the left and right sides of the upper surface of the frame body. Inverted U-shaped pressure bars are provided above the T-shaped slide rails and the ends of the two arms are connected to the frame body. Two sets of crossbars are horizontally provided between the two sets of inverted U-shaped pressure bars. A push frame is provided at the front end of the frame body and a fixed frame is provided at the rear end. A first hydraulic cylinder is horizontally provided on the fixed frame. Four sets of second hydraulic cylinders are inclinedly provided at the four corners of the lower part of the frame body. A frame support block is provided at the end of the piston rod of the second hydraulic cylinder.

[0011] The slitting device of the present invention includes a slitting mounting frame, a slitting unit is disposed at the lower part of the slitting mounting frame via a fourth hydraulic cylinder, a winch is disposed at the upper middle part of the slitting mounting frame and a third hydraulic cylinder is disposed at the upper front end, the steel rope of the winch is connected to the slitting unit, and a slider is disposed on the slitting mounting frame, the slider corresponding to the T-shaped slide rail.

[0012] The slit mounting frame of the present invention includes a mounting frame body, which is a rectangular structure formed by welding four sets of steel sections perpendicularly to each other. Retractable support legs are provided at the four corners of the lower part of the mounting frame body. Slider blocks are provided at both ends of the lower parts of the front and rear sets of steel sections of the mounting frame body. The sliders are located on the outer sides of the retractable support legs. A third hydraulic cylinder is provided at the front end of the front steel section. A winch base is provided in the middle of the mounting frame body. Two sets of fifth hydraulic cylinders are symmetrically and obliquely arranged on the front and rear sides of the lower part of the retractable support legs. A mounting frame support block is provided at the end of the piston rod of the fifth hydraulic cylinder.

[0013] The slitting unit of the present invention consists of a cutter and a cutter fixing device disposed outside the cutter.

[0014] The cutter of the present invention includes a cutter head, the upper part of which passes through the cutting vibrator mounting base and is connected to the cutting low-frequency vibrator. The cutting low-frequency vibrator is mounted on the cutting vibrator mounting base. The cutting vibrator mounting base is mounted on the lower part of the counterweight box via a vertical tie rod. T-shaped sliding rods are provided at the four corners of the outer side of the counterweight box.

[0015] The counterweight box of the present invention is a rectangular structure with an open top and a closed bottom. A partition plate is vertically arranged in the middle of the counterweight box. Two sets of rope holes are machined on the partition plate, and the steel rope of the winch is tied to the partition plate through the rope holes.

[0016] The cutting blade fixing device of the present invention includes a fixing shell. The upper part of the fixing shell has a rectangular structure and the lower part has a trapezoidal structure. The upper inner corner of the fixing shell is provided with slide rails corresponding to the T-shaped slide rods, and the outer side is provided with a hydraulic cylinder fixing seat. The piston rod end of the fourth hydraulic cylinder is fixed on the hydraulic cylinder fixing seat. The lower part of the fixing shell is provided with a baffle, and the lower middle part of the baffle is provided with a blade sleeve. The cutting head passes through the baffle and the blade sleeve to perform cutting operations.

[0017] Compared with the prior art, the present invention has the following advantages: 1. This invention achieves full automation and autonomous movement, significantly improving construction efficiency. Existing technologies rely entirely on manual labor to move the handrail support and cut joints, resulting in high labor intensity and low efficiency. This invention, through the coordinated action of the first, second, and third hydraulic cylinders, the push frame, and the T-shaped slide rail, achieves alternating step-by-step forward movement of the cutting device and the traveling frame, eliminating the need for manual intervention in the movement process. This enables continuous and automated cutting operations, thereby improving construction efficiency.

[0018] 2. This invention provides precise control over the cutting depth, effectively ensuring consistent cutting quality. Existing technologies use mechanical limiting plates for positioning, but their accuracy is easily affected by human factors and uneven ground. This invention uses a combination of "counterweight box gravity sinking + winch steel rope assistance" to control the cutter head extension, and combines this with a baffle for mechanical limiting, ensuring uniform and controllable cutting depth for each cut. This guarantees the stress release effect of the joint and improves the dam construction quality.

[0019] 3. The equipment of this invention is stable in position and the cutting process is smooth, avoiding equipment damage and packing layer disruption. Existing technologies exhibit poor stability of the entire device during vibration cutting. This invention, through the combined action of the second hydraulic cylinder, the retractable outrigger, and the fifth hydraulic cylinder, provides stable support between the frame support block, the mounting bracket support block, and the ground. This effectively absorbs the reaction force generated by the low-frequency vibrator during cutting, preventing equipment displacement or overturning during operation. This protects the equipment and avoids damage to the integrity of the packing panel caused by machine vibration.

[0020] 4. The invention features tightly integrated processes, enabling seamless collaborative operation with continuous filling construction. The cyclical operation process of "support-cutting-lifting-stepping-re-supporting" achieved through a hydraulic system is precise and rapid, highly compatible with the continuous and rapid filling process of BCR rigid filler. This minimizes the interference and waiting time of cutting operations on filling construction, ensuring the overall construction progress.

[0021] 5. The present invention features a reasonable structural design, resulting in enhanced rigidity and adaptability. The slit-cutting device utilizes counterweights and a guiding structure for slit cutting, leading to more rational stress distribution. The entire device employs a modular design, driven and connected via hydraulic cylinders and slide rails, resulting in high structural rigidity, strong load-bearing capacity, and the ability to adapt to complex working conditions on construction sites, thus extending its service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 yes Figure 1 The main view.

[0024] Figure 3 yes Figure 1 Top view.

[0025] Figure 4 This is a schematic diagram of the walking frame 1 and the slitting device 2 of the present invention.

[0026] Figure 5 yes Figure 4 A schematic diagram of the structure of the traveling frame 1.

[0027] Figure 6 yes Figure 4 A schematic diagram of the structure of the center cutting device 2.

[0028] Figure 7 yes Figure 6 A schematic diagram of the structure of the center cut mounting bracket 21.

[0029] Figure 8 yes Figure 6 A schematic diagram of the structure of the center slit unit 24.

[0030] Figure 9 yes Figure 8 Schematic diagram of the structure of the middle cutter 241 Figure 1 .

[0031] Figure 10 yes Figure 8 Schematic diagram of the structure of the middle cutter 241 Figure 2 .

[0032] Figure 11 yes Figure 8 A schematic diagram of the structure of the middle cutter fixing device 242.

[0033] In the diagram: 1. Walking frame; 2. Cutting device; 3. Hydraulic system; 4. Control cabinet; 11. Frame body; 12. Walking wheels; 13. Fixed frame; 14. First hydraulic cylinder; 15. Inverted U-shaped pressure bar; 16. Crossbar; 17. T-shaped slide rail; 18. Push frame; 19. Frame support block; 110. Second hydraulic cylinder; 21. Cutting mounting frame; 22. Winch; 23. Third hydraulic cylinder; 24. Cutting unit; 25. Fourth hydraulic cylinder; 26. Slider; 211. Mounting frame body; 212. Winch base; 213. Telescopic outriggers; 214. Fifth hydraulic cylinder; 215. Mounting bracket support block; 241. Cutting blade; 242. Cutting blade fixing device; 2411. Cutting head; 2412. Vertical tie rod; 2413. Counterweight box; 2414. T-shaped slide bar; 2415. Divider plate; 2416. Cutting kerf low-frequency vibrator; 2417. Cutting kerf vibrator mounting base; 2421. Fixing shell; 2422. Slide rail; 2423. Baffle; 2424. Blade sleeve; 2425. Hydraulic cylinder fixing seat. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments. Example 1

[0035] exist Figure 1 , 2 In section 3, the self-propelled rigid filler temperature stress joint cutting device of the present invention includes a traveling frame 1, with the traveling direction of the traveling frame 1 defined as forward. A control cabinet 4 is arranged at the upper rear part of the traveling frame 1, a cutting device 2 is arranged at the upper middle part, and a hydraulic system 3 is arranged at the upper front part. The cutting device 2 can slide on the traveling frame 1 along the traveling direction. The hydraulic system 3 provides hydraulic power to the traveling frame 1 and the cutting device 2. The control cabinet 4 controls the operation of the traveling frame 1, the cutting device 2, and the hydraulic system 3. Figure 4 , 5As shown, the walking frame 1 of this embodiment includes a frame body 11. Two sets of walking wheels 12 are provided at the lower part of the frame body 11. T-shaped slide rails 17 are provided on both the left and right sides of the upper surface of the frame body 11. Inverted U-shaped pressure rods 15 are provided above the T-shaped slide rails 17 and the ends of the two arms are connected to the frame body 11. The inverted U-shaped pressure rods prevent the slider 26 from disengaging from the T-shaped slide rails 17 due to the ground reaction force when the telescopic outrigger 213 moves downward, thus preventing the entire equipment from becoming unstable. Two sets of horizontal bars 16 are horizontally arranged between the two sets of inverted U-shaped pressure rods 15. The horizontal bars 16 are used to support the first hydraulic cylinder 14 and the third hydraulic cylinder 23 to prevent them from sagging under the action of gravity. The front end of the frame body 11 is provided with a push frame 18 and the rear end is provided with a fixed frame 13. The fixed frame 13 and the push frame 18 are L-shaped structures. The first hydraulic cylinder 14 is horizontally arranged on the fixed frame 13. In this embodiment, there are two sets of first hydraulic cylinders 14, which are symmetrically arranged on the inner side wall of the L-shaped fixed frame 13 to ensure uniform force. Four sets of second hydraulic cylinders 110 are inclinedly arranged at the four corners of the lower part of the frame body 11. The piston rod end of the second hydraulic cylinder 110 is provided with a frame support block 19. In this embodiment, the cross-sectional shape of the frame support block 19 is an isosceles triangle structure, and the base of the triangle is in contact with the packing panel.

[0036] like Figure 6 As shown, the slitting device 2 of this embodiment includes a slitting mounting frame 21. The slitting unit 24 is disposed at the lower part of the slitting mounting frame 21 via a fourth hydraulic cylinder 25. In this embodiment, four sets of fourth hydraulic cylinders 25 are provided, two sets of which are disposed on the left side of the slitting unit 24 and the other two sets of which are disposed on the right side of the slitting unit 24, and are symmetrically arranged about the slitting unit 24 in pairs.

[0037] like Figure 7 As shown, the slit mounting bracket 21 of this embodiment includes a mounting bracket body 211, which is a rectangular structure formed by welding four sets of steel sections perpendicularly to each other. Each of the four lower corners of the mounting bracket body 211 is provided with a retractable support leg 213, which adopts a structure found in the prior art. Slider blocks 26 are provided at both ends of the lower parts of the front and rear sets of steel sections of the mounting bracket body 211. The sliders 26 are located on the outer side of the retractable support legs 213 and correspond to the T-shaped slide rail 17. A third hydraulic cylinder 23 is provided at the front end of the front steel section. In this embodiment, two sets of third hydraulic cylinders 23 are provided, symmetrically arranged about the slit mounting bracket 21 to ensure uniform force distribution. During operation, the piston rod of the third hydraulic cylinder 23 extends and abuts against the inner side of the push frame 18 to apply force. A winch base 212 is provided in the middle of the mounting frame body 211, and a winch 22 is provided on the winch base 212. Two sets of fifth hydraulic cylinders 214 are symmetrically inclined on the front and rear sides of the lower part of the telescopic support leg 213. The end of the piston rod of the fifth hydraulic cylinder 214 is provided with a mounting frame support block 215. In this embodiment, the mounting frame support block 215 has an isosceles triangle structure in cross-section, and the base of the triangle is in contact with the packing panel.

[0038] like Figure 8 As shown, the slitting unit 24 in this embodiment consists of a cutter 241 and a cutter fixing device 242 disposed outside the cutter 241. The cutter 241 includes a blade head 2411. In this embodiment, the blade head 2411 has a rectangular structure, 600mm long, 600mm high, and 12mm thick, with the lower part machined into a cutting edge. The upper part of the blade head 2411 passes through the slitting vibrator mounting base 2417 and is connected to the slitting low-frequency vibrator 2416. The slitting low-frequency vibrator 2416 is disposed on the slitting vibrator mounting base 2417. The slitting vibrator mounting base 2417 has an inverted U-shaped structure and is mounted on the slitting vibrator via a vertical tie rod 2412. The counterweight box 2413 is a rectangular structure with an open top and a closed bottom. Furthermore, a partition plate 2415 is vertically arranged in the middle of the counterweight box 2413. Two sets of rope holes are machined on the partition plate 2415. The steel rope of the winch 22 is tied to the partition plate 2415 through the rope holes. During operation, a counterweight block is added to the counterweight box 2413. When the steel rope of the winch 22 is in a relaxed state, the weight of the counterweight box 2413 and the vibration of the cutting low-frequency vibrator 2416 cause the cutter head 2411 to gradually cut into the filler panel. T-shaped slide bars 2414 are arranged at the four corners of the outer side of the counterweight box 2413. The T-shaped slide bars 2414 correspond to the slide rails 2422.

[0039] like Figures 9-11 As shown, the cutter fixing device 242 of this embodiment includes a fixing shell 2421. The upper part of the fixing shell 2421 has a rectangular structure and the lower part has a trapezoidal structure. The upper inner corner of the fixing shell 2421 is provided with slide rails 2422 corresponding to the T-shaped slide rods 2414, and the outer side is provided with a hydraulic cylinder fixing seat 2425. The piston rod end of the fourth hydraulic cylinder 25 is fixed on the hydraulic cylinder fixing seat 2425. The lower part of the fixing shell 2421 is provided with a baffle 2423. The length and width dimensions of the baffle 2423 in this embodiment are the same as those of the cutting vibrator mounting base 2417. In practice, when the lower part of the cutting vibrator mounting base 2417 moves to the upper part of the baffle 2423, the set cutting depth is reached. The lower middle part of the baffle 2423 is provided with a blade sleeve 2424. The cutter head 2411 passes through the baffle 2423 and the blade sleeve 2424 to perform cutting operations.

[0040] The working principle of this invention is as follows: During initial positioning, all hydraulic cylinders except the eighth hydraulic cylinder 5252 are in the retracted state. The connecting rod end of the first hydraulic cylinder 14 is in close contact with the cutting device 2. After the equipment is in place, the second hydraulic cylinder 110, the telescopic outrigger 213, and the fifth hydraulic cylinder 214 are activated, causing the frame support block 19, the telescopic outrigger 213, and the mounting bracket support block 215 to make stable contact with the ground. The fourth hydraulic cylinder 25 is activated, causing the cutting unit 24 to move downwards to a suitable distance from the bottom of the filler panel. This distance is adjusted according to the cutting depth. After the bottom of the cutting unit 24 is in place, the roll... The winch 22 starts and loosens the steel rope. Under its own weight, the cutter 1 moves downward along the slide 2422 of the cutter fixing device 242 until the cutter head 2411 contacts the packing panel. The winch 22 continues to loosen the steel rope until it is fully relaxed, then stops the winch 22 and starts the low-frequency vibrator 2416. Under the weight of the counterweight box 2413 and the action of the low-frequency vibrator 2416, the cutter head 2411 cuts the packing panel until the cutting vibrator mounting base 2417 moves to the upper surface of the baffle 2423, thus completing the cutting operation. The winch 22 is then started to reverse and tighten the steel rope, causing the cutter 1 to move upward along the slide 2422 of the cutter fixing device 242 until the cutter head 2411 enters the cutter sleeve 2424, at which point the winch 22 is stopped.

[0041] After the slit cutting operation is completed, the telescopic outrigger 213 and the fifth hydraulic cylinder 214 are activated, causing the telescopic outrigger 213 and the mounting bracket support block 215 to lift off the ground. The first hydraulic cylinder 14 extends, pushing the slit cutting device 2 forward along the T-shaped slide rail 17 until the third hydraulic cylinder 23 contacts the push frame 18. The telescopic outrigger 213 and the fifth hydraulic cylinder 214 are activated, causing the telescopic outrigger 213 and the mounting bracket support block 215 to make stable contact with the ground. The second hydraulic cylinder 110 is activated, and the mounting bracket support block 215 lifts off the ground. The first hydraulic cylinder 14 retracts, and the third hydraulic cylinder 23 extends. The force acting on the push frame 18 causes the traveling frame 1 to move forward until it contacts the first hydraulic cylinder 14. At this time, the cutter head 2411 has just moved the distance of its slit cutting length, and the slit cutting operation is repeated.

[0042] The above process constitutes one work cycle, which is then repeated until the cutting of the entire panel is completed.

Claims

1. A self-propelled rigid filler temperature stress joint cutting device, characterized in that: The system includes a walking frame (1), a control cabinet (4) is installed at the upper rear part of the walking frame (1), a cutting device (2) is installed at the upper middle part, and a hydraulic system (3) is installed at the upper front part. The cutting device (2) slides on the walking frame (1) along the walking direction. The hydraulic system (3) provides hydraulic power to the cutting device (2) and the walking frame (1). The control cabinet (4) controls the operation of the cutting device (2), the hydraulic system (3), and the walking frame (1).

2. The self-propelled rigid packing temperature stress joint cutting device according to claim 1, characterized in that: The walking frame (1) includes a frame body (11). Two sets of walking wheels (12) are provided at the lower part of the frame body (11). T-shaped slide rails (17) are provided on both the left and right sides of the upper surface of the frame body (11). Inverted U-shaped pressure rods (15) are provided above the T-shaped slide rails (17) and the ends of the two arms are connected to the frame body (11). Two sets of crossbars (16) are horizontally provided between the two sets of inverted U-shaped pressure rods (15). A push frame (18) is provided at the front end of the frame body (11) and a fixed frame (13) is provided at the rear end. A first hydraulic cylinder (14) is horizontally provided on the fixed frame (13). Four sets of second hydraulic cylinders (110) are inclinedly provided at the four corners of the lower part of the frame body (11). A frame support block (19) is provided at the end of the piston rod of the second hydraulic cylinder (110).

3. The self-propelled rigid filler temperature stress joint cutting device according to claim 2, characterized in that: The slitting device (2) includes a slitting mounting frame (21). The slitting unit (24) is located at the lower part of the slitting mounting frame (21) via a fourth hydraulic cylinder (25). A winch (22) is located at the upper middle part of the slitting mounting frame (21), and a third hydraulic cylinder (23) is located at the upper front end. The steel rope of the winch (22) is connected to the slitting unit (24). A slider (26) is located on the slitting mounting frame (21), and the slider (26) corresponds to the T-shaped slide rail (17).

4. The self-propelled rigid filler temperature stress joint cutting device according to claim 3, characterized in that: The slit mounting frame (21) includes a mounting frame body (211), which is a rectangular structure formed by welding four sets of steel sections perpendicularly to each other. The four corners of the lower part of the mounting frame body (211) are provided with telescopic support legs (213). The lower ends of the front and rear sets of steel sections of the mounting frame body (211) are provided with sliders (26). The sliders (26) are located on the outside of the telescopic support legs (213). The front end of the front steel section is provided with a third hydraulic cylinder (23). The middle part of the mounting frame body (211) is provided with a winch base (212). The lower front and rear sides of the telescopic support legs (213) are symmetrically and obliquely provided with two sets of fifth hydraulic cylinders (214). The piston rod of the fifth hydraulic cylinder (214) is provided with a mounting frame support block (215).

5. The self-propelled rigid filler temperature stress joint cutting device according to claim 3, characterized in that: The cutting unit (24) consists of a cutter (241) and a cutter fixing device (242) disposed outside the cutter (241).

6. The self-propelled rigid filler temperature stress joint cutting device according to claim 5, characterized in that: The cutter (241) includes a cutter head (2411). The upper part of the cutter head (2411) passes through the cutting vibrator mounting base (2417) and is connected to the cutting low-frequency vibrator (2416). The cutting low-frequency vibrator (2416) is mounted on the cutting vibrator mounting base (2417). The cutting vibrator mounting base (2417) is mounted on the lower part of the counterweight box (2413) via a vertical tie rod (2412). T-shaped sliding rods (2414) are provided at the four corners of the outer side of the counterweight box (2413).

7. The self-propelled rigid packing temperature stress joint cutting device according to claim 6, characterized in that: The counterweight box (2413) is a rectangular structure with an open top and a closed bottom. A partition plate (2415) is vertically arranged in the middle of the counterweight box (2413). Two sets of rope holes are machined on the partition plate (2415). The steel rope of the winch (22) is tied to the partition plate (2415) through the rope holes.

8. The self-propelled rigid filler temperature stress joint cutting device according to claim 5, characterized in that: The cutter fixing device (242) includes a fixing shell (2421). The upper part of the fixing shell (2421) is rectangular and the lower part is trapezoidal. The upper inner corner of the fixing shell (2421) is provided with slide rails (2422) corresponding to the T-shaped slide rods (2414), and the outer side is provided with a hydraulic cylinder fixing seat (2425). The piston rod end of the fourth hydraulic cylinder (25) is fixed on the hydraulic cylinder fixing seat (2425). The lower part of the fixing shell (2421) is provided with a baffle (2423), and the lower middle part of the baffle (2423) is provided with a blade sleeve (2424). The cutter head (2411) passes through the baffle (2423) and the blade sleeve (2424) to perform slit cutting.

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