Adjustable diaphragm membrane laying machine for earth-rock cofferdam back slope type diaphragm dam

Abstract

The present application relates to the technical fields of anti-seepage membrane laying, and discloses an adjustable anti-seepage membrane laying machine for earth-rock cofferdam back slope type anti-seepage dam, which comprises a workbench, a moving device, a film spreading device and a film laying device, the moving device comprises a first support, a shaft coupling, a first rotating shaft and a moving wheel, the film spreading device comprises a second support, a film spreading auxiliary roller, a second bearing, a third rotating shaft, a third sprocket, a second chain and a fourth sprocket, the film laying device comprises a vertical plate, a first bearing, a mounting block, a fixed plate, a first spring, a limiting plate, a positioning plate, a first threaded hole, a first bolt, a first sprocket, a first chain, a second sprocket and a laying roller, and the machine further comprises a film pressing device, a film cutting device and a supporting device. In the present application, the laying efficiency and quality are effectively improved in coordination through linkage adjustment of the rotating speed of the first rotating shaft and the film spreading auxiliary roller, and the precision of the incision is improved through the cutting assembly, thereby facilitating hot melting of the anti-seepage membrane in the later stage.

Description

Technical Field

[0001] This invention relates to the field of geomembrane laying technology, and in particular to an adjustable geomembrane laying machine for a back slope type geomembrane dam of earth and rock cofferdam. Background Technology

[0002] In the construction of earth-rock cofferdams with back slope seepage prevention, the quality of geomembrane laying is crucial. Currently, commonly used geomembrane laying machines are generally equipped with a first rotating shaft and a membrane spreading auxiliary roller to complete the unfolding and laying of the geomembrane. However, in actual operation, these two components often lack a tight and effective linkage mechanism, and it is common for them to be adjusted independently. Existing geomembrane laying machines have obvious defects: when the speed of the first rotating shaft changes, if the speed of the membrane spreading auxiliary roller cannot be adjusted synchronously, the membrane unfolding speed cannot keep up when the laying speed increases, which can easily cause geomembrane accumulation and wrinkles. When the laying speed decreases, there may be problems with the membrane not being pulled smoothly. When facing different dam slope conditions and laying requirements, it is difficult to ensure that the geomembrane can always be unfolded and laid in an ideal state, which affects the overall seepage prevention effect and construction efficiency.

[0003] Traditional geomembrane laying devices require manual cutting of the geomembrane after laying. This not only increases the number of operation steps and extends the construction time, but also may cause skewed cuts or membrane tears due to uneven cutting force or inaccurate positioning, affecting laying accuracy and sealing performance. When encountering obstacles and needing to temporarily cut the membrane, manual cutting makes it difficult to ensure a flat cut, which can easily lead to membrane material waste or subsequent splicing difficulties. This makes it difficult to achieve efficient and continuous operation, thereby reducing construction efficiency and increasing quality risks. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides an adjustable geomembrane laying machine for earth-rock cofferdam back slope seepage prevention dams, aiming to improve the problems of the inability of the auxiliary roller speed of the membrane spreading device to be adjusted synchronously, as well as the problem of skewed cuts and membrane tearing caused by manual cutting of the geomembrane.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable geomembrane laying machine for a back slope type seepage-proof dam of earth and rock cofferdam, comprising a workbench, a moving device, a membrane spreading device and a membrane laying device, wherein the workbench is provided with a connecting groove;

[0006] The mobile device includes a first bracket, two sets of symmetrical first brackets are fixedly connected to the lower end of the workbench, and couplings are fixedly connected to both ends of the first bracket. A first rotating shaft is installed through each of the two corresponding couplings, and a moving wheel is fixedly connected to both ends of a first rotating shaft.

[0007] The film spreading device includes a second bracket, which is fixedly connected to the side of the worktable. A third sprocket is sleeved on a first rotating shaft near one end of the second bracket. A second chain is sleeved on the third sprocket. A fourth sprocket is provided on the inner side of the other end of the second chain. Two sets of second bearings are fixedly connected between the two second brackets. A third rotating shaft is provided between each set of second bearings. A film spreading auxiliary roller is sleeved on the third rotating shaft. The fourth sprocket is sleeved on the upper third rotating shaft.

[0008] The film-laying device includes a first sprocket, which is sleeved on a first rotating shaft at one end of the second support. A first chain is sleeved on the first sprocket, which passes through a connecting groove. A second sprocket is located at the end of the first sprocket away from the first sprocket. A vertical plate is fixedly connected to the end of the worktable away from the first support. A first bearing is fixedly connected to the inner side of the vertical plate. An installation block is sleeved on the end of the first bearing away from the vertical plate. A laying roller is fixedly connected to the end of the installation block away from the first bearing.

[0009] As a further description of the above technical solution:

[0010] It also includes a film cutting device, which includes a fourth bracket and a limiting rail. The fourth bracket is fixedly connected to the side of the worktable and has a through hole. The limiting rail is fixedly connected to the second bracket. A limiting block is slidably connected between the two limiting rails. A cutting blade is fixedly connected to the lower end of the limiting block. A pressure rod is fixedly connected to the upper end of the limiting block. A support spring is fixedly connected to the upper end of the pressure rod. The pressure rod passes through the through hole of the fourth bracket.

[0011] As a further description of the above technical solution:

[0012] It also includes a film pressing device, which includes support blocks. Two sets of support blocks are fixedly connected to the end of the second support away from the worktable. Two third bearings are fixedly connected to each set of support blocks. A fourth rotating shaft is arranged between the two corresponding third bearings. A rotating component is sleeved on the fourth rotating shaft. A third support is fixedly connected to the rotating component. A rotating seat is fixedly connected to the lower end of the third support. A sliding column is fixedly connected to the end of the rotating seat away from the third support. A sliding rod is arranged inside the sliding column. A film pressing wheel is arranged at the end of the sliding rod away from the sliding column. A third spring is fixedly connected to the end of the sliding rod away from the film pressing wheel. The end of the third spring away from the sliding rod is connected to the end of the inner sidewall of the sliding column away from the film pressing wheel.

[0013] As a further description of the above technical solution:

[0014] A positioning plate is fixedly connected to the end of the laying roller away from the first spring. The positioning plate has a first threaded hole that passes through the laying roller, and a first bolt is detachably connected in the first threaded hole.

[0015] As a further description of the above technical solution:

[0016] A fixing plate is fixedly connected to the laying roller. A first spring is fixedly connected to the end of the fixing plate away from the mounting block. A limit plate is fixedly connected to the end of the first spring away from the fixing plate. The limit plate is slidably connected to the laying roller.

[0017] As a further description of the above technical solution:

[0018] Each of the two brackets has a sliding groove at one of its opposite ends. The bottom of the sliding groove is fixedly connected to a second spring, and the upper end of the second spring is fixedly connected to a slider. The two sliders are respectively fixedly connected to the two ends of the second bearing.

[0019] As a further description of the above technical solution:

[0020] It also includes a support device, which includes a mounting plate. Two mounting plates are fixedly connected to the workbench. A fourth bearing is fixedly connected to one end of each mounting plate. A fifth rotating shaft is provided between the two fourth bearings. A support roller is sleeved on the fifth rotating shaft.

[0021] As a further description of the above technical solution:

[0022] The second bracket has a second threaded hole, and the rotating part has multiple third threaded holes. The second threaded hole and the third threaded hole are detachably connected with second bolts.

[0023] As a further description of the above technical solution:

[0024] The working process of an adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope is as follows:

[0025] S1: Install the geomembrane roll on the laying roller. The first spring pushes the geomembrane roll through the limiting plate, so that it acts on the positioning plate. Place the geomembrane from the support roller between the two film spreading auxiliary rollers and fix the top of the geomembrane to the ground.

[0026] S2: The membrane is moved and laid using a traction vehicle. When the moving wheel rotates, it drives the first rotating shaft to rotate. The first rotating shaft drives the first sprocket to rotate. When the first sprocket rotates, it drives the second sprocket to rotate through the first chain. When the second sprocket rotates, it drives the laying roller to rotate. When the laying roller rotates, it drives the geomembrane roll to rotate and lay the membrane.

[0027] S3: The first rotating shaft rotates while driving the third sprocket to rotate. When the third sprocket rotates, it drives the fourth sprocket to rotate through the second chain. When the fourth sprocket rotates, it drives the upper film spreading auxiliary roller to rotate. The lower film spreading auxiliary roller pushes the slider upward through the second spring. The slider then drives the lower film spreading auxiliary roller to push upward, so that the two film spreading auxiliary rollers squeeze the geomembrane.

[0028] S4: Based on the width of the geomembrane, the third support is rotated by the rotating component. The third support rotates the sliding column through the rotating seat. The sliding column rotates the pressure roller through the sliding rod. The pressure roller squeezes the geomembrane in contact with the ground, making it fit more tightly with the ground.

[0029] S5: After the geomembrane is laid in the preset position, press down on the top of the pressure rod. The support spring is compressed, and the limit block moves down along the limit track, driving the cutting blade to cut the geomembrane downwards, thus achieving rapid cutting of the geomembrane.

[0030] The present invention has the following beneficial effects:

[0031] 1. In this invention, the rotation speed of the first rotating shaft and the film-spreading auxiliary roller are linked and adjusted. Both can maintain a coordinated rotation speed according to different construction scenarios and laying progress requirements. When laying on a large dam slope with a tight schedule, the film-spreading auxiliary roller accelerates synchronously, ensuring that the geomembrane can be quickly and evenly unrolled from the membrane roll and smoothly laid onto the dam slope. This avoids membrane accumulation and wrinkles caused by speed mismatch, greatly improving overall laying efficiency. Simultaneously, in areas requiring high laying quality and precise operation, the film-spreading auxiliary roller slows down, ensuring the flatness and fit of the geomembrane during unfolding, achieving high standards in every laying location, and effectively synergistically improving laying efficiency and quality.

[0032] 2. In this invention, the laid geomembrane can be cut in one go by the cutting component, which makes the operation more convenient and improves the accuracy of the cut. This facilitates the subsequent heat fusion of the geomembrane and solves the problem of uneven cutting force or inaccurate positioning during manual cutting, which leads to skewed cuts and membrane tearing, affecting the laying accuracy and sealing performance.

[0033] 3. The sliding column, sliding rod, and pressure roller installed at the bottom of the invention apply a certain pressure to the geomembrane that has been laid on the dam slope, which can press the geomembrane tightly onto the dam slope surface. The designed third spring can effectively push the geomembrane up by the pressure roller through the sliding rod when there are foreign objects such as stones at the bottom of the geomembrane, preventing damage to the geomembrane. After being pushed up, the pressure roller can be reset due to the elasticity of the spring itself. Attached Figure Description

[0034] Figure 1This invention proposes a three-dimensional adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope type seepage prevention dam. Figure 1 ;

[0035] Figure 2 This invention proposes a three-dimensional adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope type seepage prevention dam. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of the workbench of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0037] Figure 4 This invention presents a structural diagram of the first and second sprockets of an adjustable geomembrane laying machine for a backslope type seepage-proof dam of earth and rock cofferdam.

[0038] Figure 5 This is a structural diagram of the third and fourth sprockets of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0039] Figure 6 This invention presents a structural diagram of the second bearing and the membrane spreading auxiliary roller of an adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope.

[0040] Figure 7 This is a structural diagram of the second support of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0041] Figure 8 This is a structural diagram of the membrane laying device of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0042] Figure 9 This is a structural diagram of the third support of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0043] Figure 10 This is a structural diagram of the pressure roller of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0044] Figure 11 This is a structural diagram of the support roller of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage-proof dam proposed in this invention.

[0045] Figure 12 This is a structural diagram of the membrane cutting device of an adjustable geomembrane laying machine for an earth-rock cofferdam back slope seepage prevention dam proposed in this invention.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Workbench; 2. Moving device; 3. Film laying device; 4. Film spreading device; 5. Film pressing device; 6. Film cutting device; 7. Support device; 11. Connecting groove; 21. First bracket; 22. Coupling; 23. First rotating shaft; 24. Moving wheel; 301. Vertical plate; 302. First bearing; 303. Mounting block; 304. Fixing plate; 305. First spring; 306. Limiting plate; 307. Positioning plate; 308. First threaded hole; 309. First bolt; 310. First sprocket; 311. First chain; 312. Second sprocket; 313. Laying roller; 401. Second bracket; 402. Sliding groove; 403. Second spring; 404. Slider; 405. Second screw 406. Pore; 407. Film spreading auxiliary roller; 408. Second bearing; 409. Third rotating shaft; 410. Third sprocket; 411. Second chain; 501. Fourth sprocket; 502. Support block; 503. Third bearing; 504. Rotating component; 505. Third bracket; 506. Third threaded hole; 507. Second bolt; 508. Rotating seat; 509. Sliding column; 510. Third spring; 511. Sliding rod; 512. Pressing roller; 61. Cutting knife; 62. Limiting block; 63. Pressing rod; 64. Fourth bracket; 65. Support spring; 66. Limiting track; 71. Mounting plate; 72. Fourth bearing; 73. Fifth rotating shaft; 74. Support roller. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1: Refer to Figure 1-3This invention provides an adjustable geomembrane laying machine for a backslope type seepage-proof dam of earth and rock cofferdam: it includes a workbench 1, a moving device 2, a membrane spreading device 4, and a membrane laying device 3. The workbench 1 has a connecting groove 11; the moving device 2 includes a first support 21, two sets of symmetrical first supports 21 are fixedly connected to the lower end of the workbench 1, and couplings 22 are fixedly connected to both ends of the first support 21. A first rotating shaft 23 is installed through each of the two corresponding couplings 22, and a moving wheel 24 is fixedly connected to both ends of a first rotating shaft 23; the membrane spreading device 4 includes a second support 401, the second support 401 is fixedly connected to the side of the workbench 1, a third sprocket 409 is sleeved on the first rotating shaft 23 near one end of the second support 401, a second chain 410 is sleeved on the third sprocket 409, and a fourth sprocket 411 is provided on the inner side of the other end of the second chain 410; the two second supports 401 are connected to each other. Two sets of second bearings 407 are fixedly connected between them. A third rotating shaft 408 is provided between each set of second bearings 407. A film spreading auxiliary roller 406 is sleeved on the third rotating shaft 408. A fourth sprocket 411 is sleeved on the upper third rotating shaft 408. The film laying device 3 includes a first sprocket 310, which is sleeved on a first rotating shaft 23 at one end of the second support 401. A first chain 311 is sleeved on the first sprocket 310. The first chain 311 passes through the connecting groove 11, and a second sprocket 312 is provided at the end away from the first sprocket 310. A vertical plate 301 is fixedly connected to the end of the worktable 1 away from the first support 21. A first bearing 302 is fixedly connected to the inner side of the vertical plate 301. An installation block 303 is sleeved at the end of the first bearing 302 away from the vertical plate 301. A laying roller 313 is fixedly connected to the end of the installation block 303 away from the first bearing 302.

[0050] A fixing plate 304 is fixedly connected to the laying roller 313. A first spring 305 is fixedly connected to the end of the fixing plate 304 away from the mounting block 303. A limiting plate 306 is fixedly connected to the end of the first spring 305 away from the fixing plate 304. The limiting plate 306 is slidably connected to the laying roller 313. This design can adapt to geomembrane rolls of various widths and prevent the geomembrane rolls from moving left and right due to being too short, thus preventing the laying from being non-straight. A positioning plate 307 is fixedly connected to the end of the laying roller 313 away from the first spring 305. A first threaded hole 308 is opened on the positioning plate 307, which passes through the laying roller 313. A first bolt 309 is detachably connected in the first threaded hole 308. This design can stably fix the geomembrane roll when it is installed on the first rotating shaft 23. A sliding groove 402 is opened on each opposite end of the second bracket 401. The bottom end of the moving groove 402 is fixedly connected to the second spring 403, and the upper end of the second spring 403 is fixedly connected to the slider 404. The two sliders 404 are respectively fixedly connected to the two ends of the second bearing 407. This design can ensure that the lower membrane spreading auxiliary roller 406 always provides an upward force to the upper membrane spreading auxiliary roller 406 when the thickness of the geomembrane changes, thereby achieving the effect of always clamping the geomembrane. It also includes a support device 7, which includes a mounting plate 71. Two mounting plates 71 are fixedly connected to the worktable 1. The opposite ends of the mounting plates 71 are fixedly connected to the fourth bearing 72. A fifth rotating shaft 73 is set between the two fourth bearings 72. A support roller 74 is sleeved on the fifth rotating shaft 73. This design can support the unfolded geomembrane through the designed support roller 74 to prevent the geomembrane from directly contacting the worktable 1 and causing damage to the geomembrane.

[0051] The specific implementation method is as follows: The geomembrane roll is installed on the laying roller 313. The first spring 305 pushes the geomembrane roll through the limiting plate 306, causing it to act on the positioning plate 307. The geomembrane is placed from the support roller 74 between the two film spreading auxiliary rollers 406. The top of the geomembrane is fixed to the ground. A traction vehicle is used to move and spread the film. When the moving wheel 24 rotates, it drives the first rotating shaft 23 to rotate. The first rotating shaft 23 drives the first sprocket 310 to rotate. When the first sprocket 310 rotates, it drives the second sprocket 312 to rotate through the first chain 311. When the second sprocket 312 rotates, it drives the laying roller 313 to rotate. When the laying roller 313 rotates, it drives the geomembrane roll to rotate and spread the film. At the same time, the rotation of the first rotating shaft 23 drives the third sprocket 409 to rotate. When the third sprocket 409 rotates, it drives the fourth sprocket 411 to rotate through the second chain 410. When the fourth sprocket 411 rotates, it drives the upper film spreading auxiliary roller 406 to rotate, and the lower end... The membrane spreading auxiliary roller 406 pushes the slider 404 upward via a spring. The slider 404 then drives the lower membrane spreading auxiliary roller 406 upward, causing the two membrane spreading auxiliary rollers 406 to compress the geomembrane. Through the linkage adjustment of the rotation speed of the first rotating shaft 23 and the membrane spreading auxiliary roller 406, the two can maintain a coordinated rotation speed according to different construction scenarios and laying progress requirements. When laying on a large area of ​​dam slope and with a tight schedule, the membrane spreading auxiliary roller will accelerate synchronously to ensure that the geomembrane can be quickly and evenly unfolded from the membrane roll and smoothly laid on the dam slope. This avoids membrane accumulation, wrinkles, and other problems caused by mismatched speeds, greatly improving the overall laying efficiency. At the same time, in some areas with high laying quality requirements and requiring precise operation, the membrane spreading auxiliary roller will slow down to ensure the flatness and fit of the geomembrane unfolding, so that the laying of each place can meet high standards, achieving an effective synergistic improvement in laying efficiency and quality.

[0052] Example 2: It also includes a film pressing device 5, which includes a support block 501. Two sets of support blocks 501 are fixedly connected to the end of the second bracket 401 away from the worktable 1. Two third bearings 502 are fixedly connected to each set of support blocks 501. A fourth rotating shaft 503 is provided between the two corresponding third bearings 502. A rotating part 504 is sleeved on the fourth rotating shaft 503. A third bracket 505 is fixedly connected to the rotating part 504. A rotating seat 508 is fixedly connected to the lower end of the third bracket 505. A sliding column 509 is fixedly connected to the end of the rotating seat 508 away from the third bracket 505. A sliding rod 511 is provided inside the sliding column 509. A film pressing wheel 512 is provided at the end of the sliding rod 511 away from the sliding column 509. A third spring 510 is fixedly connected to the end of the sliding rod 511 away from the film pressing wheel 512. The end of the third spring 510 away from the sliding rod 511 is connected to the end of the inner wall of the sliding column 509 away from the film pressing wheel 512.

[0053] The second support 401 has a second threaded hole 405, and the rotating part 504 has multiple third threaded holes 506. The second threaded hole 405 and the third threaded hole 506 are detachably connected to the second bolt 507. This design allows the membrane pressing device 5 to be installed and disassembled through the second threaded hole 405, the third threaded hole and the second bolt 507. The position of the two membrane pressing wheels 512 can be adjusted according to the width of the geomembrane, so as to perform membrane pressing operations on geomembranes of different widths.

[0054] The specific implementation method is as follows: According to the width of the geomembrane, the third support 505 is rotated by the rotating part 504. The third support 505 drives the sliding column 509 to rotate through the rotating seat 508. The sliding column 509 drives the pressure roller 512 to rotate through the sliding rod 511. The pressure roller 512 squeezes the geomembrane in contact with the ground, making it fit more tightly with the ground. The sliding column 509, the sliding rod 511 and the pressure roller 512 installed at the bottom end apply a certain pressure to the geomembrane that has been laid on the dam slope, which can press the geomembrane tightly onto the dam slope surface. In addition, the designed third spring 510 can effectively push the pressure roller 512 up through the sliding rod when there are foreign objects such as stones at the lower end of the geomembrane, preventing damage to the geomembrane. After being pushed up, the spring's own elasticity can reset the pressure roller 512.

[0055] Example 3: It also includes a film cutting device 6, which includes a fourth support 64 and a limiting track 66. The fourth support 64 is fixedly connected to the side of the workbench 1 and has a through hole. The limiting track 66 is fixedly connected to the second support 401. A limiting block 62 is slidably connected between the two limiting tracks 66. A cutting blade 61 is fixedly connected to the lower end of the limiting block 62. A pressure rod 63 is fixedly connected to the upper end of the limiting block 62. A support spring 65 is fixedly connected to the upper end of the pressure rod 63. The pressure rod 63 passes through the through hole opened in the fourth support 64.

[0056] The specific implementation method is as follows: After the geomembrane is laid to the preset position, the top of the pressure rod 63 is pressed down, the support spring 65 is compressed, the limiting block 62 moves down along the limiting track 66, and drives the cutting blade 61 to cut the geomembrane downward, thereby achieving rapid cutting of the geomembrane. The geomembrane laying device is equipped with a membrane cutting device 6, which can complete the precise cutting of the geomembrane in real time according to the construction needs during the laying process, without the need for secondary manual operation, significantly improving construction efficiency and solving the problem that the geomembrane still needs to be manually cut after it is laid, resulting in a skewed cut.

[0057] Working principle: The geomembrane roll is installed on the laying roller 313. The first spring 305 pushes the geomembrane roll through the limiting plate 306, causing it to act on the positioning plate 307. The geomembrane is placed from the support roller 74 between the two film spreading auxiliary rollers 406, and the top of the geomembrane is fixed to the ground. A traction vehicle is used to move and lay the film. When the moving wheel 24 rotates, it drives the first rotating shaft 23 to rotate. The first rotating shaft 23 drives the first sprocket 310 to rotate. When the first sprocket 310 rotates, it drives the second sprocket 312 to rotate through the first chain 311. When the second sprocket 312 rotates, it drives the laying roller 313 to rotate. The rotation of the laying roller 313 drives the geomembrane roll to rotate and lay the film. At the same time, the rotation of the first rotating shaft 23 drives the third sprocket 409 to rotate. When the sprocket 409 rotates, it drives the fourth sprocket 411 to rotate via the second chain 410. When the fourth sprocket 411 rotates, it drives the upper film spreading auxiliary roller 406 to rotate. The lower film spreading auxiliary roller 406 pushes the slider 404 upward via the second spring. The slider 404 then drives the lower film spreading auxiliary roller 406 to push upward, so that the two film spreading auxiliary rollers 406 squeeze the geomembrane. According to the width of the geomembrane, the third support 505 is driven to rotate via the rotating component 504. The third support 505 drives the sliding column 509 to rotate via the rotating seat 508. The sliding column 509 drives the pressing roller 512 to rotate via the sliding rod 511. The pressing roller 512 squeezes the geomembrane in contact with the ground, making it fit more tightly with the ground. After the geomembrane is laid in the preset position, press down on the top of the pressure rod 63, the support spring 65 is compressed, the limiting block 62 moves down along the limiting track 66, driving the cutting blade 61 to cut the geomembrane downwards, thus achieving rapid cutting of the geomembrane.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope, comprising a workbench (1), a moving device (2), a membrane spreading device (4), a membrane laying device (3), a membrane cutting device (6), and a membrane pressing device (5), characterized in that: The workbench (1) is provided with a connecting groove (11); The moving device (2) includes a first bracket (21), two sets of symmetrical first brackets (21) are fixedly connected to the lower end of the workbench (1), and couplings (22) are fixedly connected to both ends of the first bracket (21). A first rotating shaft (23) is installed through the two corresponding couplings (22), and a moving wheel (24) is fixedly connected to both ends of the first rotating shaft (23). The film spreading device (4) includes a second support (401), which is fixedly connected to the side of the workbench (1). A third sprocket (409) is sleeved on a first rotating shaft (23) near one end of the second support (401). A second chain (410) is sleeved on the third sprocket (409). A fourth sprocket (411) is provided on the inner side of the other end of the second chain (410). Two sets of second bearings (407) are fixedly connected between the two second supports (401). A third rotating shaft (408) is provided between each set of second bearings (407). A film spreading auxiliary roller (406) is sleeved on the third rotating shaft (408). The fourth sprocket (411) is sleeved on the upper third rotating shaft (408). The film-laying device (3) includes a first sprocket (310), which is sleeved on a first rotating shaft (23) at one end of the second support (401). A first chain (311) is sleeved on the first sprocket (310), which passes through a connecting groove (11). A second sprocket (312) is provided at the end away from the first sprocket (310). A vertical plate (301) is fixedly connected to the end of the worktable (1) away from the first support (21). A first bearing (302) is fixedly connected to the inner side of the vertical plate (301). An installation block (303) is sleeved at the end of the first bearing (302) away from the vertical plate (301). A laying roller (313) is fixedly connected to the end of the installation block (303) away from the first bearing (302). The film cutting device (6) includes a fourth bracket (64) and a limiting rail (66). The fourth bracket (64) is fixedly connected to the side of the workbench (1) and has a through hole. The limiting rail (66) is fixedly connected to the second bracket (401). A limiting block (62) is slidably connected between the two limiting rails (66). A cutting blade (61) is fixedly connected to the lower end of the limiting block (62). A pressure rod (63) is fixedly connected to the upper end of the limiting block (62). A support spring (65) is fixedly connected to the upper end of the pressure rod (63). The pressure rod (63) passes through the through hole opened in the fourth bracket (64). The pressing device (5) includes support blocks (501). Two sets of support blocks (501) are fixedly connected to one end of the second bracket (401) away from the worktable (1). Each set of support blocks (501) is fixedly connected to two third bearings (502). A fourth rotating shaft (503) is provided between the two corresponding third bearings (502). A rotating component (504) is sleeved on the fourth rotating shaft (503). A third bracket (505) is fixedly connected to the rotating component (504). A rotating seat is fixedly connected to the lower end of the third bracket (505). 508), the rotating seat (508) is fixedly connected to a sliding column (509) at one end away from the third bracket (505), a sliding rod (511) is provided inside the sliding column (509), a pressure roller (512) is provided at one end of the sliding rod (511) away from the sliding column (509), a third spring (510) is fixedly connected to one end of the sliding rod (511) away from the pressure roller (512), and the end of the third spring (510) away from the sliding rod (511) is connected to the end of the inner sidewall of the sliding column (509) away from the pressure roller (512); A fixing plate (304) is fixedly connected to the laying roller (313). A first spring (305) is fixedly connected to one end of the fixing plate (304) away from the mounting block (303). A limiting plate (306) is fixedly connected to one end of the first spring (305) away from the fixing plate (304). The limiting plate (306) is slidably connected to the laying roller (313). The laying roller (313) is fixedly connected to a positioning plate (307) at the end away from the first spring (305). The positioning plate (307) has a first threaded hole (308) that passes through the laying roller (313). A first bolt (309) is detachably connected in the first threaded hole (308).

2. The adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope as described in claim 1, characterized in that: The second bracket (401) has a sliding groove (402) at one end of each opposite side. The bottom end of the sliding groove (402) is fixedly connected to the second spring (403), and the upper end of the second spring (403) is fixedly connected to the slider (404). The two sliders (404) are respectively fixedly connected to the two ends of the second bearing (407).

3. The adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope as described in claim 2, characterized in that: It also includes a support device (7), which includes a mounting plate (71). Two mounting plates (71) are fixedly connected to the workbench (1). A fourth bearing (72) is fixedly connected to one end of the mounting plate (71) and a fifth rotating shaft (73) is provided between the two fourth bearings (72). A support roller (74) is sleeved on the fifth rotating shaft (73).

4. An adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope as described in any one of claims 1 to 3, characterized in that: The second bracket (401) has a second threaded hole (405), and the rotating part (504) has a plurality of third threaded holes (506). The second threaded hole (405) and the third threaded hole (506) are detachably connected to a second bolt (507).

5. A method for using an adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope seepage barrier, comprising the adjustable geomembrane laying machine for an earth-rock cofferdam with a back slope seepage barrier as described in claim 3, characterized in that: The operating method of the geomembrane laying machine is as follows: S1: Install the geomembrane roll on the laying roller (313), and the first spring (305) pushes the geomembrane roll through the limiting plate (306) so that it acts on the positioning plate (307). The geomembrane is placed from the support roller (74) between the two film spreading auxiliary rollers (406) and the top of the geomembrane is fixed on the ground. S2: The membrane is moved and laid using a traction vehicle. When the moving wheel (24) rotates, it drives the first rotating shaft (23) to rotate. The first rotating shaft (23) drives the first sprocket (310) to rotate. When the first sprocket (310) rotates, it drives the second sprocket (312) to rotate through the first chain (311). When the second sprocket (312) rotates, it drives the laying roller (313) to rotate. When the laying roller (313) rotates, it drives the geomembrane roll to rotate and lay the membrane. S3: The first rotating shaft (23) rotates while driving the third sprocket (409) to rotate. When the third sprocket (409) rotates, it drives the fourth sprocket (411) to rotate through the second chain (410). When the fourth sprocket (411) rotates, it drives the upper film spreading auxiliary roller (406) to rotate. The lower film spreading auxiliary roller (406) pushes the slider (404) upward through the second spring. The slider (404) then drives the lower film spreading auxiliary roller (406) to push upward, so that the two film spreading auxiliary rollers (406) squeeze the geomembrane. S4: Based on the width of the geomembrane, the third support (505) is rotated by the rotating part (504). The third support (505) drives the sliding column (509) to rotate through the rotating seat (508). The sliding column (509) drives the pressure roller (512) to rotate through the sliding rod (511). The pressure roller (512) performs a squeezing operation on the geomembrane in contact with the ground, so that it adheres more tightly to the ground. S5: After the geomembrane is laid in the preset position, press down on the top of the pressure rod (63), the support spring (65) is compressed, the limiting block (62) moves down along the limiting track (66), and drives the cutting blade (61) to cut the geomembrane downward, so as to achieve rapid cutting of the geomembrane.

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