A support device for the construction of underground sewage pipelines

Abstract

This invention relates to a support device for the construction of buried sewage pipelines, belonging to the field of pipeline support technology. It is installed inside the pipeline construction trench and includes two sets of support main plates respectively installed on the inner walls of the left and right sides of the trench. A row of support partitions is installed on each of the two sets of support main plates. Each support partition has a row of partition positioning holes at its upper end. A telescopic screw adjustment arm is installed between the two sets of support main plates. A pressure sliding block is installed at each end of the screw adjustment arm. The two pressure sliding blocks are respectively installed at the upper ends of two symmetrical support partitions. A telescopic limiting plug is slidably installed at the lower end of the pressure sliding block. The pressure sliding block is fixed by the extension and retraction of the limiting plug. This invention solves the problem in current buried sewage pipeline construction where the telescopic screw connection points of the support box are fixed to both sides of the protective plate, preventing free lateral and longitudinal adjustment according to actual support requirements.

Description

Technical Field

[0001] This invention belongs to the field of pipeline support technology, specifically relating to a support device for the construction of buried sewage pipelines. Background Technology

[0002] Underground sewage pipelines are a core component of urban drainage systems, primarily used to collect and transport domestic sewage, industrial wastewater, and some initial rainwater to sewage treatment plants or discharge outlets. Their underground location reduces surface space occupation, minimizing impact on the urban landscape and traffic, while preventing environmental and sanitation problems caused by sewage exposure. They achieve directional sewage transport through gravity flow or localized pressure boosting, preventing sewage leakage and subsequent pollution of soil and groundwater, and preventing groundwater and surface water from seeping into the pipeline and increasing the treatment load. During the construction of underground sewage pipelines, trench excavation is a critical step, and support devices are the core facilities ensuring trench stability and preventing collapse. Their performance directly affects construction safety and efficiency. They resist soil and water pressure on the trench sidewalls, preventing slope collapse or piping; control surrounding soil displacement; protect adjacent underground pipelines (such as water supply pipes and gas pipes) and surface structures (buildings and roads); and provide safe working space for pipeline laying and foundation construction.

[0003] For common sewage pipe support structures, a support box design is generally adopted. The support box consists of two protective plates on both sides and a telescopic screw in the middle. The distance between the two sets of protective plates is adjusted by the telescopic screw, which also serves as a support structure to support the two protective plates on both sides, so that there is a safe space between the two sets of protective plates for operation. However, in order to facilitate excavator operation, the connection point of the telescopic screw is generally set on the two sides of the protective plate to make room for the excavator to operate in the middle area. It is not possible to freely adjust the installation point of the telescopic screw in the horizontal and vertical directions according to the actual support requirements, which still has shortcomings in actual use. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a support device for the construction of buried sewage pipelines; it solves the problem that in the current construction of buried sewage pipelines, the telescopic screw connection points of the support box are fixed on both sides of the protective plate and cannot be freely adjusted laterally and longitudinally according to the actual support requirements.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution.

[0006] A support device for underground sewage pipeline construction is installed inside the pipeline construction trench. It includes two sets of support main plates respectively installed on the inner walls of the left and right sides of the trench. A row of support partitions is fixed vertically on the end faces of the two sets of support main plates that are close to each other. Each support partition has a row of partition positioning holes at its upper end. A telescopic screw adjusting arm is installed between the two sets of support main plates. A pressure-applying slider is installed at each end of the screw adjusting arm. The two pressure-applying sliders are respectively installed at the upper ends of two symmetrical support partitions. A telescopic limiting plug is slidably installed at the lower end of the pressure-applying slider. When the limiting plug extends to the outer side of the lower end of the pressure-applying slider, it inserts into the partition positioning hole, at which point the pressure-applying slider is fixed to the support partition. When the limiting plug retracts to the inner side of the pressure-applying slider, the pressure-applying slider can slide at the upper end of the support partition.

[0007] Furthermore, each support motherboard is composed of multiple motherboard units spliced ​​together; a top plate is fixedly installed at the top of each motherboard unit, and a top slot is provided on the side of the top plate. A support positioning hole is provided on the front and back sides of the top slot; a bottom plate is fixedly installed at the bottom of each motherboard unit; the bottom plate of the upper motherboard unit is inserted into the top slot of the lower motherboard unit, and two locking bolts pass through the support positioning holes on the front and back sides of the top slot and are screwed to the front and back ends of the bottom plate, thereby fixing the upper and lower motherboard units together.

[0008] Furthermore, the support device also includes a stepping mechanism, which is disposed between two adjacent support partitions. The stepping mechanism includes a moving block, a stepping support plate, a connecting support plate, and a positioning post. A T-slot is provided in the middle of the lower end face of each support partition. The moving block is slidably disposed inside the T-slot of the upper support partition, with the lower end of the moving block extending to the outside of the T-slot. A horizontal stepping support plate is fixedly disposed at the lower end of the moving block, and the end of the stepping support plate away from the moving block is hinged to the upper end of the connecting support plate. A positioning post is rotatably disposed at the lower end of the connecting support plate, and the positioning post is inserted into one of the partition positioning holes of the lower support partition. An annular groove is also fixedly disposed at the end of the stepping support plate near the moving block.

[0009] Furthermore, the screw adjusting arm includes an adjusting sleeve and two adjusting screws. A set of internal threads with opposite directions are respectively provided inside the openings at both ends of the adjusting sleeve. An adjusting screw is screwed into the openings at both ends of the adjusting sleeve. A support arm is fixedly provided at the ends of the two adjusting screws that are far apart from each other. The ends of the two support arms that are far apart from each other are both inclined downwards.

[0010] Furthermore, the pressure-applying slider is a hollow square box structure. Rotating holes are provided on the side end faces of the two pressure-applying sliders that are close to each other. The rotating holes are connected to the internal space of the pressure-applying slider. A rotating column is rotatably inserted into each of the two rotating holes. Two symmetrical edge protrusions are fixedly provided at one end of the outer side of each rotating column. A pin is rotatably provided between the two edge protrusions. The ends of the two supporting auxiliary arms that are far apart from each other are fixedly connected to the two pins respectively.

[0011] Furthermore, a locking mechanism is provided between the rotating column and the pressure-applying slider. The locking mechanism includes a locking screw, a threaded block, and a moving rod. A horizontal locking screw is rotatably provided on the end face of the pressure-applying slider away from the main support plate, and the locking screw is located on the rear side of the rotating column. A first waist-shaped groove is provided on the side wall of the pressure-applying slider away from the main support plate. A threaded block is slidably provided inside the first waist-shaped groove. One outer end of the threaded block is screwed to the locking screw. A horizontal moving rod is fixedly provided on the inner end of the threaded block, and the moving rod is located on the rear side of the rotating column.

[0012] Furthermore, the locking mechanism also includes a first push block, a first pressing block, and a first longitudinal spring; a first push block is fixedly installed at the lower end of the moving rod; a limiting plug is slidably installed on the bottom plate of the pressure sliding block in the vertical direction, and a connecting plate is fixedly installed at the upper end of the limiting plug; a first pressing block is fixedly installed at the upper end of the connecting plate, and a first pressing inclined surface is provided at the rear end of the first pressing block, with the lower end of the first push block sliding in contact with the first pressing inclined surface; a support plate is also fixedly installed inside the pressure sliding block, the support plate is located above the connecting plate, and a first longitudinal spring is fixedly installed between the support plate and the connecting plate.

[0013] Furthermore, the locking mechanism also includes an inner locking block, an arc-shaped limiting plate, an outer locking block, and a transverse spring; a row of inner locking blocks is fixedly arranged on the outer surface of the rotating column near the moving rod; a first sliding groove is provided on the side wall of the rotating hole near the moving rod, an arc-shaped limiting plate is slidably arranged inside the first sliding groove, and a row of outer locking blocks is fixedly arranged on the side of the arc-shaped limiting plate near the rotating column; two transverse springs are fixedly arranged at one end of the inner side of the first sliding groove, and the two transverse springs are respectively fixedly connected to the upper and lower ends of the arc-shaped limiting plate.

[0014] Furthermore, a second sliding groove is provided on the bottom plate of the pressure sliding block near the support main plate, and a limit block is slidably arranged in the vertical direction inside the second sliding groove; a limit groove is provided at one end edge of the upper surface of each support partition near the same side of the support main plate, and the limit block is correspondingly arranged with the limit groove; when the limit block extends to the outside of the bottom plate of the pressure sliding block, the limit block engages with the limit groove; when the limit block retracts to the inside of the bottom plate of the pressure sliding block, the limit block disengages from the limit groove; a second pressing block is fixedly arranged at the middle of the upper part of the end face of the limit block away from the support main plate, a second pressing inclined surface is provided at the upper end of the second pressing block, and a vertical second longitudinal spring is fixedly arranged between the lower end face of the second pressing block and the bottom plate of the pressure sliding block.

[0015] Furthermore, a synchronous moving plate is fixedly installed on the upper end of the threaded block, and a drive screw is screwed onto the synchronous moving plate; a second waist-shaped groove is provided on the side wall of the pressure slider part away from the main support plate, and the drive screw is slidably inserted into the second waist-shaped groove; a second push block is rotatably installed on one end of the inner side of the drive screw, and the lower end of the second push block slides in contact with the second extrusion inclined surface.

[0016] The beneficial effects of this invention compared to the prior art are as follows:

[0017] (1) This invention has a row of support partitions fixedly installed on the surface of the support main plate along the vertical direction, so that the pressure sliding block can move horizontally in the gap between two adjacent support partitions, thereby adjusting the lateral position of the pressure sliding block's force point. It can be adaptively adjusted according to the actual support requirements. At the same time, the locking mechanism enables the limiting plug to switch between being inserted into the partition positioning hole and being removed from the partition positioning hole, thereby achieving rapid positioning of the pressure sliding block. A limiting block that can extend downward from the bottom of the pressure sliding block is also provided. The limiting block is inserted into the limiting groove to achieve limiting. At the same time, the limiting block can also be disengaged upward from the limiting groove under the operation of the drive screw. Through this design, the entire pressure sliding block can be quickly pulled out laterally from the gap of the support partition, thereby adjusting the height of the pressure sliding block according to the actual support requirements. Compared with the existing support box, it has a wider range of support adjustment capabilities and can be adaptively adjusted according to construction needs at any time.

[0018] (2) This invention can not only achieve adaptive adjustment of the support position, but also design the traditional linear screw adjustment arm as a central raised structure, and adjust the angle of the screw adjustment arm in actual use by the rotation effect of the rotating column. In actual application, by tilting the screw adjustment arm to one side, the operable area of ​​the space above the support device can be increased, which facilitates the excavator to carry out construction, and also facilitates the subsequent movement of the sewage pipe from the larger space above into the pipeline construction trench, reducing the construction difficulty. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 ;

[0022] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle;

[0023] Figure 4 This is a schematic diagram showing the splicing of two motherboard units, one above the other.

[0024] Figure 5 This is a schematic diagram of the pedal mechanism when it is in operation.

[0025] Figure 6 This is a schematic diagram showing the connection between the foot support plate and the support partition plate;

[0026] Figure 7 This is a schematic diagram showing the connection between the locking mechanism and the support partition, the pressure sliding block, and the support arm;

[0027] Figure 8 This is a partial structural diagram of the locking mechanism. Figure 1 ;

[0028] Figure 9 This is a schematic diagram showing the connection between the pressure slider and the rotating column, the limiting block, and the limiting plug-in column;

[0029] Figure 10 This is a partial structural diagram of the locking mechanism. Figure 2 ;

[0030] Figure 11 This is an exploded view of the area between the limit block, the second push block, and the drive screw.

[0031] Among them, 1 is the pipe construction trench, 2 is the support main plate, 3 is the top insert plate, 4 is the bottom insert plate, 5 is the top slot, 6 is the support positioning hole, 7 is the support partition plate, 8 is the partition plate positioning hole, 9 is the pressure sliding block, 10 is the T-slot, 11 is the moving block, 12 is the step support plate, 13 is the connecting support plate, 14 is the positioning column, 15 is the slot, 16 is the rotating column, 17 is the edge protrusion plate, 18 is the support auxiliary arm, 19 is the screw adjustment arm, 20 is the locking screw, 21 is the first waist-shaped groove, 22 is the threaded block, and 23 is the threaded block. 25 is a moving rod, 26 is an inner locking block, 27 is an arc-shaped limiting plate, 29 is an outer locking block, 30 is a pushing horizontal hole, 31 is a horizontal spring, 32 is a first push block, 33 is a first pressing block, 34 is a limiting plug-in post, 35 is a support plate, 36 is a first longitudinal spring, 37 is a limiting groove, 38 is a limiting block, 39 is a synchronous moving plate, 40 is a second waist-shaped groove, 41 is a driving screw, 42 is a second pressing block, 43 is a second push block, 44 is an embedded rotating hole, 121 is a guide block, and 121 is a clearance groove. Detailed Implementation

[0032] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0033] like Figure 1 As shown in Figure 11, this invention provides a support device for the construction of buried sewage pipelines, which is installed inside the pipeline construction trench 1. The support device includes two sets of support main plates 2 respectively installed on the inner walls of the left and right sides of the pipeline construction trench 1. A row of support partitions 7 are fixedly installed vertically on the end faces of the two sets of support main plates 2 that are close to each other. Each support partition 7 has a row of partition positioning holes 8 at its upper end. A telescopic screw adjusting arm 19 is provided between the two sets of support main plates 2. Each end of the support partition 7 has a pressure sliding block 9. The two pressure sliding blocks 9 are respectively located on the upper ends of the two symmetrical support partitions 7. A retractable limiting plug 33 is slidably provided at the lower end of the pressure sliding block 9. When the limiting plug 33 extends to the outer side of the lower end of the pressure sliding block 9, it is inserted into the positioning hole 8 of the partition. At this time, the pressure sliding block 9 is fixed to the support partition 7. When the limiting plug 33 retracts to the inner side of the pressure sliding block 9, the pressure sliding block 9 can slide at the upper end of the support partition 7.

[0034] The support main board 2 is a square plate-shaped structure located in a vertical plane in the front-to-back direction. Each set of support main boards 2 is composed of multiple main board units spliced ​​together. A top insert plate 3 is fixedly installed at the top of each main board unit. A top slot 5 is provided on the side of the top insert plate 3. A support positioning hole 6 is provided on the front and back sides of the top slot 5. A bottom insert plate 4 is fixedly installed at the bottom of each main board unit. The bottom insert plate 4 of the upper main board unit is inserted into the top slot 5 of the lower main board unit. Two locking bolts pass through the support positioning holes 6 on the front and back sides of the top slot 5 and are screwed to the front and back ends of the bottom insert plate 4, thereby fixing the upper and lower main board units together. When it is necessary to increase the height of the entire support device, it is only necessary to insert and fix a new main board unit at the top of the uppermost main board unit.

[0035] The support partition 7 is horizontally arranged along the front-to-back direction, and a row of partition positioning holes 8 are equidistantly arranged on the upper surface of the support partition 7 along the front-to-back direction. The depth of the partition positioning holes 8 is less than one-third of the thickness of the support partition 7. A limiting groove 36 is provided at one edge of the upper surface of each support partition 7 near the same side of the support main plate 2, and the length direction of the limiting groove 36 is parallel to the length direction of the support partition 7. A T-shaped groove 10 is provided in the middle of the lower surface of each support partition 7, and the length direction of the T-shaped groove 10 is parallel to the length direction of the support partition 7. The depth of the T-shaped groove 10 is less than one-third of the thickness of the support partition 7.

[0036] Both the main support plate 2 and the support partition plate 7 are made of carbon steel plate, which is low in cost, high in strength, and has undergone anti-corrosion treatment. The thickness of the support partition plate 7 ranges from 3cm to 7cm, ensuring that the support partition plate 7 has sufficient connection strength.

[0037] The support device also includes a stepping mechanism, which is disposed between two adjacent support partitions 7. The stepping mechanism includes a movable block 11, a stepping support plate 12, a connecting support plate 13, and a positioning column 14. The movable block 11 is slidably disposed inside the T-slot 10 of the upper support partition 7. The movable block 11 includes a large-diameter cylinder on the upper side and a small-diameter cylinder on the lower side. The vertical cross-section of the movable block 11 is a T-shaped structure, so the movable block 11 can not only slide inside the T-slot 10, but also rotate inside the T-slot 10. The lower end of the movable block 11 extends to the outside of the T-slot 10. A horizontal stepping support plate 12 is fixedly disposed at the lower end of the movable block 11. One end of the stepping support plate 12 is fixedly connected to the lower end of the movable block 11, and the other end of the stepping support plate 12 is hinged to the upper end of the connecting support plate 13. A positioning post 14 is rotatably mounted on the lower end of the connecting support plate 13. The positioning post 14 is inserted into one of the partition positioning holes 8 of the lower support partition plate 7. A circular groove 15 is also fixedly mounted on the end of the step support plate 12 near the moving block 11.

[0038] When climbing is not required using the foot support mechanism, rotate the connecting support plate 13 upwards until it aligns with the foot support plate 12. Then, rotate the positioning pin 14 at the end of the connecting support plate 13 so that the positioning pin 14 is inserted into the slot 15 at the end of the foot support plate 12. Then, rotate the foot support plate 12 so that both the foot support plate 12 and the connecting support plate 13 rotate to the lower end of the support partition 7, thus putting the foot support mechanism into a retracted state.

[0039] When climbing requires the use of a foot support mechanism, the foot support plate 12 is rotated outward to a horizontal position. Then, the foot support plate 12 is moved along the T-slot 10 by the interaction of the T-slot 10 and the moving block 11 until it reaches the climbing position. Next, the positioning pin 14 is pulled out of the slot 15, and the connecting support plate 13 is rotated downward until the positioning pin 14 is inserted into the partition positioning hole 8 on the lower support partition 7. At this point, the foot support mechanism is in operation. The positioning pin 14 and the connecting support plate 13 support the foot support plate 12, allowing workers to climb by stepping on it.

[0040] The screw adjusting arm 19 includes an adjusting sleeve and two adjusting screws. The adjusting sleeve is a cylindrical structure with openings at both ends, and each opening has a set of internal threads with opposite directions. An adjusting screw is screwed into each opening, and the adjusting screws are horizontally positioned along the left-right direction. A support arm 18 is fixedly mounted at the ends of the two adjusting screws that are furthest apart from each other. The two support arms 18 are symmetrical, and their furthest ends are both inclined downwards. The screw adjusting arm 19 and the two support arms 18 form an overall upward-raised structure. In practical applications, the working space below the raised structure is larger, making actual operations more convenient. Furthermore, the greater the elevation, the larger the working space. This design provides more space for excavator digging operations, and also makes it easier to place sewage pipes inside the pipe construction trench 1 during subsequent installation.

[0041] The pressure-applying slider 9 is a hollow square box structure, with its upper end face slidingly contacting the lower end face of the upper support partition 7. A clearance groove 121 is provided on the upper end face of each of the two pressure-applying slider parts 9 that are close to each other. The thickness of the clearance groove 121 is greater than the total thickness of the folded foot support plate 12 and the connecting support plate 13. When the pressure-applying slider part 9 slides between the upper and lower support partitions 7, it avoids the foot-feeding mechanism in its retracted state through the clearance groove 121. A circular rotating hole is provided on the upper end face of each of the two pressure-applying slider parts 9 that are close to each other, and the rotating hole communicates with the internal space of the pressure-applying slider part 9. A first annular groove is provided in the middle of the inner wall of the rotating hole. A rotating column 16 is rotatably inserted into each of the two rotating holes. A first annular limiting ring is fixedly provided on the outer wall of the rotating column 16, and the first limiting ring is located inside the first annular groove. The first limiting ring and the first annular groove cooperate to ensure that the rotating column 16 does not come out of the rotating hole, and also ensures that the rotating column 16 can rotate smoothly inside the rotating hole. Two symmetrical edge protrusions 17 are fixedly provided at one end of the outer side of each rotating column 16, and a pin is rotatably arranged between the two edge protrusions 17. The ends of the two supporting auxiliary arms 18 that are far apart from each other are fixedly connected to the two pins respectively.

[0042] Since the rotating column 16 can rotate inside the rotating hole, the tilt angle of the screw adjusting arm 19 can be adjusted so that the screw adjusting arm 19 tilts to one side to make way for the working space below.

[0043] When the adjusting sleeve is rotated, since the adjusting sleeve is screwed to the adjusting screws on both sides, the adjusting screws on both sides are driven to move closer or further apart, thereby driving the two pressure sliding blocks 9 to move closer or further apart, thus adapting to the support main plates 2 with different spacing, so that the support device is suitable for pipeline construction trenches 1 of different widths.

[0044] The extension range of the screw adjusting arm 19 is controlled between 500mm and 900mm.

[0045] A locking mechanism is provided between the rotating column 16 and the pressure slider 9. The locking mechanism includes a locking screw 20, a threaded block 22, a moving rod 23, an inner locking block 25, an outer locking block 27, an arc-shaped limiting plate 26, a horizontal spring 30, a first vertical spring 35, a first push block 31, a first pressing block 32, and a support plate 34.

[0046] A horizontal locking screw 20 is rotatably mounted on the side of the pressure sliding block 9 away from the support main plate 2. The locking screw 20 is rotatably mounted on the outer end face of the pressure sliding block 9 via two hinge seats. The locking screw 20 is located behind the rotating column 16. A first waist-shaped groove 21 is provided on the side wall of the pressure sliding block 9 away from the support main plate 2. The length direction of the first waist-shaped groove 21 is horizontally arranged along the front-back direction. A threaded block 22 is slidably mounted inside the first waist-shaped groove 21 along the front-back horizontal direction. The threaded block 22 maintains sliding contact with the upper and lower end faces of the first waist-shaped groove 21. One outer end of the threaded block 22 is screwed to the locking screw 20. A horizontally moving rod 23 is fixedly mounted on one inner end of the threaded block 22. The moving rod 23 is located behind the rotating column 16.

[0047] A first push block 31 is fixedly installed at the lower end of the moving rod 23. Two symmetrically arranged limiting plugs 33 are slidably mounted on the bottom plate of the pressure sliding block 9 along the vertical direction, with the same connecting plate fixedly mounted at the upper end of each plug. A first pressing block 32 is fixedly mounted at the upper end of the connecting plate, with a first pressing slope at its rear end, the upper end of which is inclined forward. The lower end of the first push block 31 slides in contact with the first pressing slope. A support plate 34 is also fixedly mounted inside the pressure sliding block 9, located above the connecting plate. Two vertical first longitudinal springs 35 are fixedly mounted between the support plate 34 and the connecting plate.

[0048] A row of arc-shaped inner locking blocks 25 are fixedly installed on the outer surface of the rotating column 16 near the moving rod 23. A first sliding groove is provided on the side wall of the rotating hole near the moving rod 23, and the first sliding groove is connected to the internal space of the pressure sliding block 9. An arc-shaped limiting plate 26 is slidably installed in the first sliding groove along the front-back direction, and a row of arc-shaped outer locking blocks 27 are fixedly installed on the side of the arc-shaped limiting plate 26 near the rotating column 16. A triangular block is fixedly installed on the side of the arc-shaped limiting plate 26 away from the rotating column 16, and a pushing horizontal hole 29 is provided at the end of the triangular block away from the arc-shaped limiting plate 26. Two inner fixing blocks are fixedly installed at one end of the first sliding groove, and a horizontal spring 30 is fixedly installed on each inner fixing block. The horizontal springs 30 are horizontally arranged along the front-back direction, and the ends of the two horizontal springs 30 away from the inner fixing blocks are fixedly connected to the upper and lower ends of the arc-shaped limiting plate 26, respectively.

[0049] In the initial state, the transverse spring 30 is in a contracted state, the arc-shaped limiting plate 26 is located inside the first sliding groove, and the outer locking block 27 on the arc-shaped limiting plate 26 is disengaged from the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 can rotate freely inside the rotating hole.

[0050] When the locking screw 20 is rotated forward, since the locking screw 20 is screwed to the threaded block 22, the threaded block 22 slides forward inside the first waist-shaped groove 21. The threaded block 22 drives the moving rod 23 to move forward, and the moving block 11 drives the first push block 31 to move forward. The lower end of the first push block 31 gives a forward force to the first pressing slope of the first pressing block 32, causing the first pressing block 32 to drive the two limiting plug pins 33 to slide downward, so that the limiting plug pins 33 extend to the lower outer side of the pressure sliding block 9. As the moving rod 23 moves forward, the front end of the moving rod 23 extends into the pushing horizontal hole 29 of the triangular block and pushes the arc-shaped limiting plate 26 forward. The horizontal spring 30 is stretched, and the arc-shaped limiting plate 26 moves to the outside of the first sliding groove. The outer locking block 27 on the arc-shaped limiting plate 26 is engaged with the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 cannot rotate freely inside the rotating hole.

[0051] When the locking screw 20 is rotated in the reverse direction, the threaded block 22 slides backward inside the first waist-shaped groove 21. The threaded block 22 drives the moving rod 23 to move backward, and the moving block 11 drives the first push block 31 to move backward. The lower end of the first push block 31 gradually disengages from the first pressing slope of the first pressing block 32. Under the action of the rebound force of the first longitudinal spring 35, the first pressing block 32 and the limiting plug 33 slide upward, so that the limiting plug 33 retracts to the inside of the pressure sliding block 9. As the moving rod 23 moves backward, the front end of the moving rod 23 gradually disengages from the pushing horizontal hole 29 of the triangular block. The forward external force on the arc-shaped limiting plate 26 gradually disappears, the horizontal spring 30 begins to rebound, and the arc-shaped limiting plate 26 retracts into the first sliding groove. The outer locking block 27 on the arc-shaped limiting plate 26 disengages from the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 can rotate freely again inside the rotating hole.

[0052] A second sliding groove is provided on the bottom plate of the pressure sliding block 9 near the support main plate 2. A limit block 37 is slidably disposed in the second sliding groove along the vertical direction, and the limit block 37 is correspondingly disposed with the limit groove 36. When the limit block 37 extends to the outside of the bottom plate of the pressure sliding block 9, the limit block 37 engages with the limit groove 36; when the limit block 37 retracts to the inside of the bottom plate of the pressure sliding block 9, the limit block 37 disengages from the limit groove 36. Two symmetrical guide blocks 44 are fixedly disposed on the end face of the limit block 37 away from the support main plate 2. Two vertical guide grooves are provided on the inner wall of the second sliding groove. The two guide blocks 44 are slidably engaged in the two guide grooves respectively, thereby ensuring that the limit block 37 slides in the vertical direction.

[0053] A second pressing block 41 is fixedly installed at the upper center of the end face of the limiting block 37 on the side away from the support main board 2. A second pressing slope is provided at the upper end of the second pressing block 41, and the height of the second pressing slope on the side closer to the support main board 2 is higher than the height on the side away from the support main board 2. Two vertical second longitudinal springs are fixedly installed between the lower end face of the second pressing block 41 and the bottom plate of the pressure slider part 9.

[0054] A synchronous moving plate 38 is fixedly installed on the upper end of the threaded block 22, and a horizontally driven screw 40 is screwed onto the synchronous moving plate 38. A second waist-shaped groove 39 is provided on the side wall of the pressure sliding block 9 away from the support main plate 2. The length direction of the second waist-shaped groove 39 is horizontally arranged along the front-back direction, and the second waist-shaped groove 39 is located above the first waist-shaped groove 21. The drive screw 40 is slidably inserted into the second waist-shaped groove 39. A second push block 42 is rotatably provided on the inner end of the drive screw 40, and the lower end of the second push block 42 slides in contact with the second extrusion inclined surface. An embedded rotating hole 43 is provided on the second push block 42, and a second annular groove is provided on the inner wall of the embedded rotating hole 43. A second limiting ring is fixedly provided on the inner end of the drive screw 40, and the second limiting ring is engaged with the second annular groove. The second annular groove and the second limiting ring work together to allow the second push block 42 and the drive screw 40 to rotate relative to each other, while ensuring that the drive screw 40 will not disengage from the second push block 42.

[0055] The working principle of the present invention is:

[0056] First, a set of support main plates 2 are spliced ​​on the left and right side walls of the pipeline construction trench 1 respectively, ensuring that the support partitions 7 on the two sets of support main plates 2 face each other.

[0057] Multiple sets of screw adjusting arms 19 are placed between two sets of support main plates 2, ensuring that the pressure sliding blocks 9 at both ends of the screw adjusting arms 19 are respectively placed on the upper ends of the two symmetrical support partitions 7. Then, the adjusting sleeve on the screw adjusting arm 19 is rotated so that the adjusting screws at both ends of the adjusting sleeve move away from each other, thereby causing the pressure sliding blocks 9 at both ends to move away from each other until the pressure sliding blocks 9 on both sides abut against the support main plates 2 on both sides. At this time, the limiting blocks 37 located on the inner side of the pressure sliding blocks 9 at both ends are respectively located above the limiting grooves 36 of the support partitions 7 on both sides. At this time, the locking mechanism is in the unlocked state, that is, the transverse spring 30 is in the contracted state, the arc-shaped limiting plate 26 is located inside the first sliding groove, and the outer locking block 27 on the arc-shaped limiting plate 26 is disengaged from the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 can rotate freely inside the rotating hole, thereby controlling the upper end of the screw adjusting arm 19 to tilt forward or backward. At this time, the limiting plug 33 retracts to the inside of the pressure sliding block 9, the limiting plug 33 disengages from the partition limiting hole, and the pressure sliding block 9 can slide on the upper end of the support partition 7.

[0058] Then, the drive screw 40 is rotated forward, causing it to move towards the inside of the pressure slider 9. The drive screw 40 drives the second push block 42 to move towards one side of the second extrusion block 41, causing the second push block 42 to extrude the second extrusion slope on the second extrusion block 41. The second extrusion block 41 is subjected to extrusion force, causing the limiting block 37 to slide downward inside the second sliding groove. The second longitudinal spring is compressed, and the limiting block 37 extends to the outside of the bottom end of the pressure slider 9 and extends into the limiting groove 36. At this time, the limiting block 37 and the limiting groove 36 are engaged with each other, ensuring that the pressure slider 9 will not detach from the support partition 7. At the same time, the pressure slider 9 can also slide back and forth on the upper end of the support partition 7.

[0059] Then, the screw adjusting arm 19 drives the pressure sliding blocks 9 on both sides to slide back and forth on the upper end of the support partition 7. The stability of the pressure sliding blocks 9 when sliding back and forth is ensured by the mutual engagement of the limiting groove 36 and the limiting block 37. After the pressure slider 9 slides to the designated position, the screw adjusting arm 19 is kept at a fixed tilt angle, and then the locking screw 20 is rotated forward. Since the locking screw 20 is screwed to the threaded block 22, the threaded block 22 is driven to slide forward inside the first waist-shaped groove 21. The threaded block 22 drives the moving rod 23 to move forward, and the moving block 11 drives the first push block 31 to move forward. The lower end of the first push block 31 gives a forward force to the first extrusion slope of the first extrusion block 32, so that the first extrusion block 32 drives the two limiting plug pins 33 to slide downward, so that the limiting plug pins 33 extend to the lower outer side of the pressure slider 9, and the two limiting plug pins 33 are respectively inserted into the two partition positioning holes 8 on the support partition 7, thereby fixing the pressure slider 9 to the support partition 7. As the moving rod 23 moves forward, its front end extends into the pushing horizontal hole 29 of the triangular block, pushing the arc-shaped limiting plate 26 forward. The horizontal spring 30 is stretched, and the arc-shaped limiting plate 26 moves to the outside of the first sliding groove. The outer locking block 27 on the arc-shaped limiting plate 26 engages with the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 cannot rotate freely inside the rotating hole, thus fixing the tilt angle of the screw adjusting arm 19. During the forward sliding of the moving rod 23, the threaded block 22 drives the drive screw 40 to slide forward synchronously inside the second waist-shaped groove 39. The drive screw 40 drives the second push block 42 to slide forward synchronously. The second push block 42 maintains sliding contact with the second extrusion inclined surface on the second extrusion block 41, thus keeping the height of the second extrusion block 41 and the limiting block 37 constant.

[0060] At this time, the pressure sliding blocks 9 at both ends abut against the support main plates 2 on both sides, and the pressure sliding blocks 9 at both ends are fixed to the support partitions 7 on both sides. At the same time, the tilt angle of the screw adjusting arm 19 is also fixed to ensure stable support for the support main plates 2 on both sides. The support main plates 2 on both sides provide stable support for the construction area in the middle to prevent the inner wall of the pipeline construction trench 1 on both sides from collapsing.

[0061] When climbing requires the use of a foot support mechanism, the foot support plate 12 is rotated outward to a horizontal position. Then, the foot support plate 12 is moved along the T-slot 10 by the interaction of the T-slot 10 and the moving block 11 until it reaches the climbing position. Next, the positioning pin 14 is pulled out of the slot 15, and the connecting support plate 13 is rotated downward until the positioning pin 14 is inserted into the partition positioning hole 8 on the lower support partition 7. At this point, the foot support mechanism is in operation. The positioning pin 14 and the connecting support plate 13 support the foot support plate 12, allowing workers to climb by stepping on it.

[0062] When climbing is not required using the foot support mechanism, rotate the connecting support plate 13 upwards until it aligns with the foot support plate 12. Then, rotate the positioning post 14 at the end of the connecting support plate 13 so that the positioning post 14 is inserted into the inner wall of the slot 15 at the end of the foot support plate 12. Then, rotate the foot support plate 12 so that both the foot support plate 12 and the connecting support plate 13 rotate to the lower end of the support partition 7, thus putting the foot support mechanism into a retracted state.

[0063] When the support device needs to be disassembled, the locking screw 20 is rotated in the reverse direction, causing the threaded block 22 to slide backward inside the first waist-shaped groove 21. The threaded block 22 causes the moving rod 23 to move backward, and the moving block 11 causes the first push block 31 to move backward. The lower end of the first push block 31 gradually disengages from the first pressing slope of the first pressing block 32. Under the action of the rebound force of the first longitudinal spring 35, the first pressing block 32 and the limiting plug 33 slide upward, so that the limiting plug 33 retracts to the inside of the pressure sliding block 9. The limiting plug 33 disengages from the partition positioning hole 8, so that the pressure sliding block 9 can slide again. As the moving rod 23 moves backward, the front end of the moving rod 23 gradually disengages from the pushing horizontal hole 29 of the triangular block. The forward external force on the arc-shaped limiting plate 26 gradually disappears, the horizontal spring 30 begins to rebound, and the arc-shaped limiting plate 26 retracts into the first sliding groove. The outer locking block 27 on the arc-shaped limiting plate 26 disengages from the inner locking block 25 on the rotating column 16. At this time, the rotating column 16 can rotate freely again inside the rotating hole, thereby adjusting the tilt angle of the screw adjusting arm 19. Then, the drive screw 40 is rotated in the opposite direction, causing it to move outward toward the pressure slider 9. The drive screw 40 drives the second push block 42 to move away from the second extrusion block 41, causing the pressure applied by the second push block 42 to the second extrusion block 41 to gradually disappear. Under the action of the rebound force of the second longitudinal spring, the second extrusion block 41 drives the limiting block 37 to gradually slide upward. The limiting block 37 gradually disengages from the limiting groove 36 and gradually retracts to the inside of the pressure slider 9. The limiting block 37 disengages from the limiting groove 36. At this time, the pressure slider 9 can be disengaged from the support partitions 7 on both sides, completing the disassembly of the support device.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A support device for the construction of buried sewage pipelines, installed inside the pipeline construction trench (1), characterized in that: The system includes two sets of support main plates (2) respectively installed on the inner walls of the left and right sides of the pipeline construction trench (1). A row of support partitions (7) is fixed vertically on the end faces of the two sets of support main plates (2) that are close to each other. The support partitions (7) are horizontally arranged along the front-back direction. Each support partition (7) has a row of partition positioning holes (8) at its upper end. A telescopic screw adjusting arm (19) is provided between the two sets of support main plates (2). A pressure sliding block (9) is provided at each end of the screw adjusting arm (19). The two pressure sliding blocks (9) are respectively located on... At the upper end of the two symmetrical support partitions (7), the pressure sliding block (9) can move horizontally in the gap between the two adjacent support partitions (7). A retractable limiting plug (33) is slidably provided at the lower end of the pressure sliding block (9). When the limiting plug (33) extends to the outside of the lower end of the pressure sliding block (9), it is inserted into the partition positioning hole (8). At this time, the pressure sliding block (9) is fixed to the support partition (7). When the limiting plug (33) retracts to the inside of the pressure sliding block (9), the pressure sliding block (9) can slide at the upper end of the support partition (7).

2. The support device for the construction of buried sewage pipelines according to claim 1, characterized in that: Each support motherboard (2) is composed of multiple motherboard units spliced ​​together; a top insert plate (3) is fixedly installed at the top of each motherboard unit, a top slot (5) is provided on the side of the top insert plate (3), and a support positioning hole (6) is provided on the front and back sides of the top slot (5); a bottom insert plate (4) is fixedly installed at the bottom of each motherboard unit; the bottom insert plate (4) of the upper motherboard unit is inserted into the top slot (5) of the lower motherboard unit, and two locking bolts pass through the support positioning holes (6) on the front and back sides of the top slot (5) and are screwed to the front and back ends of the bottom insert plate (4), thereby fixing the upper and lower motherboard units together.

3. The support device for the construction of buried sewage pipelines according to claim 1, characterized in that: The support device also includes a stepping mechanism, which is disposed between two adjacent upper and lower support partitions (7); the stepping mechanism includes a moving block (11), a stepping support plate (12), a connecting support plate (13), and a positioning column (14); a T-slot (10) is provided in the middle of the lower end face of each support partition (7), the moving block (11) is slidably disposed inside the T-slot (10) of the upper support partition (7), and the lower end of the moving block (11) extends to the outside of the T-slot (10). A horizontal stepping support plate (12) is fixedly installed at the lower end of the moving block (11). The end of the stepping support plate (12) away from the moving block (11) is hinged to the upper end of the connecting support plate (13). A positioning post (14) is rotatably installed at the lower end of the connecting support plate (13). The positioning post (14) is inserted into one of the partition positioning holes (8) of the lower support partition plate (7). A circular groove (15) is also fixedly installed at the end of the stepping support plate (12) near the moving block (11).

4. The support device for the construction of buried sewage pipelines according to claim 1, characterized in that: The screw adjusting arm (19) includes an adjusting sleeve and two adjusting screws. A set of internal threads with opposite directions are respectively provided inside the openings at both ends of the adjusting sleeve. An adjusting screw is screwed into the openings at both ends of the adjusting sleeve. A support arm (18) is fixedly provided at the ends of the two adjusting screws that are far apart from each other. The ends of the two support arms (18) that are far apart from each other are both inclined downwards.

5. A support device for the construction of buried sewage pipelines according to claim 4, characterized in that: The pressure slider part (9) is a hollow square box structure. Rotating holes are provided on the side end faces of the two pressure slider parts (9) that are close to each other. The rotating holes are connected to the internal space of the pressure slider part (9). A rotating column (16) is rotatably inserted into the two rotating holes. Two symmetrical edge protrusions (17) are fixedly provided at one end of the outer side of each rotating column (16). A pin is rotatably provided between the two edge protrusions (17). The ends of the two supporting arms (18) that are far apart from each other are fixedly connected to the two pins respectively.

6. A support device for the construction of buried sewage pipelines according to claim 5, characterized in that: A locking mechanism is provided between the rotating column (16) and the pressure sliding block (9). The locking mechanism includes a locking screw (20), a threaded block (22), and a moving rod (23). A locking screw (20) is rotatably provided on the side end face of the pressure sliding block (9) away from the support main board (2). The locking screw (20) is located on the rear side of the rotating column (16). A first waist-shaped groove (21) is provided on the side wall of the pressure sliding block (9) away from the support main board (2). A threaded block (22) is slidably provided inside the first waist-shaped groove (21). One outer end of the threaded block (22) is screwed to the locking screw (20). A moving rod (23) is fixedly provided on the inner end of the threaded block (22). The moving rod (23) is located on the rear side of the rotating column (16).

7. A support device for the construction of buried sewage pipelines according to claim 6, characterized in that: The locking mechanism also includes a first push block (31), a first pressing block (32), and a first longitudinal spring (35); the first push block (31) is fixedly installed at the lower end of the moving rod (23); the limiting plug-in post (33) is slidably installed on the bottom plate of the pressure sliding block (9) in the vertical direction, and a connecting plate is fixedly installed at the upper end of the limiting plug-in post (33); the first pressing block (32) is fixedly installed at the upper end of the connecting plate, and a first pressing inclined surface is provided at the rear end of the first pressing block (32), and the lower end of the first push block (31) slides in contact with the first pressing inclined surface; a support plate (34) is also fixedly installed inside the pressure sliding block (9), the support plate (34) is located above the connecting plate, and a first longitudinal spring (35) is fixedly installed between the support plate (34) and the connecting plate.

8. A support device for the construction of buried sewage pipelines according to claim 7, characterized in that: The locking mechanism also includes an inner locking block (25), an arc-shaped limiting plate (26), an outer locking block (27), and a transverse spring (30); a row of inner locking blocks (25) is fixedly arranged on the outer side of the rotating column (16) near the moving rod (23); a first sliding groove is provided on the side wall of the rotating hole near the moving rod (23), an arc-shaped limiting plate (26) is slidably arranged inside the first sliding groove, and a row of outer locking blocks (27) is fixedly arranged on the side of the arc-shaped limiting plate (26) near the rotating column (16); two transverse springs (30) are fixedly arranged at one end of the inner side of the first sliding groove, and the two transverse springs (30) are fixedly connected to the upper and lower ends of the arc-shaped limiting plate (26) respectively.

9. A support device for the construction of buried sewage pipelines according to claim 6, characterized in that: A second sliding groove is provided on the bottom plate of the pressure sliding block (9) near the support main plate (2), and a limit block (37) is slidably arranged in the second sliding groove along the vertical direction; a limit groove (36) is provided on the upper end face of each support partition (7) near the edge of the support main plate (2) on the same side, and the limit block (37) is correspondingly arranged with the limit groove (36); when the limit block (37) extends to the outside of the bottom plate of the pressure sliding block (9), the limit block (37) and the limit groove (36) are aligned. The limiting groove (36) is engaged; when the limiting block (37) is retracted to the inner side of the bottom plate of the pressure slider part (9), the limiting block (37) is disengaged from the limiting groove (36); a second extrusion block (41) is fixedly provided at the middle of the upper part of the end face of the limiting block (37) away from the support main plate (2), a second extrusion slope is provided at the upper end of the second extrusion block (41), and a vertical second longitudinal spring is fixedly provided between the lower end face of the second extrusion block (41) and the bottom plate of the pressure slider part (9).

10. A support device for the construction of buried sewage pipelines according to claim 9, characterized in that: A synchronous moving plate (38) is fixedly installed on the upper end of the threaded block (22), and a drive screw (40) is screwed onto the synchronous moving plate (38); a second waist-shaped groove (39) is provided on the side wall of the pressure slider part (9) away from the support main plate (2), and the drive screw (40) is slidably inserted into the second waist-shaped groove (39); a second push block (42) is rotatably provided on one end of the inner side of the drive screw (40), and the lower end of the second push block (42) slides in contact with the second extrusion inclined surface.

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