Anti-seepage curtain construction trench section isolation system and waterproof curtain construction method

Abstract

The present invention relates to the technical field of soil and groundwater pollutant prevention and control, and specifically to a trench section isolation system for anti-seepage curtain construction and a construction method for waterproof curtains. The trench section isolation system for anti-seepage curtain construction includes a lift and a template; the lift includes a base and upper and lower lifting devices; the lifting device includes a lifting mechanism installed on the base; a first connecting mechanism is provided on the lifting platform; the template segment includes a plate body, and a second connecting mechanism cooperating with the first connecting mechanism is provided on the back of the plate body; the upper and lower ends of the plate body are provided with connectors connected to other template segments; the fixing device on the back of the plate body includes a number of anchor rods and an anchor rod driving mechanism, and the anchor rod driving mechanism drives the anchor rods to move outward and insert into the trench wall. Through the above settings, the template segment can fix itself to the trench wall, and the template segment can be set and recovered by using the lift, which greatly speeds up the construction progress of the waterproof curtain.

Description

Technical Field

[0001] The present invention relates to the technical field of soil and groundwater pollutant prevention and control, and in particular to an anti-seepage curtain construction trench section isolation system and a waterproof curtain construction method. Background Art

[0002] Some early chemical plants, due to insufficient awareness of environmental protection and pollution during their construction, lacked effective pollution prevention measures, and lacked effective anti-seepage measures in their stockpiles and discharge areas. These industrial pollutants gradually contaminate the soil and groundwater in the areas where the plants are located. Soil pollution from factories is characterized by high population density, concentrated pollution areas, and high pollutant doses. If timely remediation is not carried out, pollutants will continue to spread over time, contaminating the natural environment even further.

[0003] If the factory in the polluted area has been decommissioned, the contaminated soil can be removed from the area and moved away from densely populated areas for disposal. The area can then be treated for pollution and backfilled with new soil. This method can fundamentally solve the problem of factory soil contamination, but it is relatively costly.

[0004] For factories still in use, anti-seepage curtains are commonly used. Installing anti-seepage curtains along the diffusion path of pollutants can isolate contaminated areas from uncontaminated areas and effectively control the spread of pollutants, preventing them from affecting a wider area.

[0005] During the construction of an anti-seepage curtain, the factory must halt production. Therefore, to minimize downtime, the construction of the anti-seepage curtain needs to be accelerated. The existing construction method for anti-seepage curtains mainly involves the following steps: 1. First, trenches are excavated using trenching machinery; 2. Then, an anti-seepage membrane is manually laid within the trench; 3. Finally, the trench is backfilled.

[0006] Because anti-seepage curtains are typically long, and the trenching speed of engineering machinery in step 1 is fast, while the installation of the anti-seepage membrane in step 2 is slow, in actual construction, a trenching machine is typically used to first excavate the entire trench for the anti-seepage curtain, then remove the trenching machine. The trenching is then divided into multiple construction trench sections, and the installation of the anti-seepage membrane in step 2 and the backfilling of the trench sections in step 3 are carried out in sections.

[0007] This construction method requires isolating the trench section undergoing steps 2 and 3 from the adjacent, unfinished trench section. Existing technology typically employs formwork and formwork supports for this isolation. Once the trench section is backfilled, the formwork and formwork supports are removed and rebuilt for the next trench section.

[0008] This construction method, which requires the installation and disassembly of formwork and formwork supports for each trench section, significantly slows down the overall construction process. Furthermore, the formwork installation process is cumbersome and labor-intensive. Therefore, a new construction method is needed to further accelerate the construction of anti-seepage curtains and reduce the labor workload. Summary of the Invention

[0009] In order to overcome the problem of slow construction speed in the existing anti-seepage curtain segmented construction method, which affects the rapid resumption of production activities in the factory, the present invention provides an anti-seepage curtain construction trench segment isolation system, including a lift and a template.

[0010] The elevator includes a base and two independent upper and lower lifting devices, and the base is arranged on the upper edge of the groove; the lifting device includes a lifting mechanism installed on the base, and the execution end of the lifting mechanism is connected to the lifting platform, and the lifting mechanism drives the lifting platform to move up and down; a first connecting mechanism is arranged on the lifting platform, and the first connecting mechanism can switch between a connected state connected to the template and a detached state detached from the template, and the first connecting mechanism drives the template to move up and down.

[0011] The template includes several template segments spliced ​​end to end, and the template segments include a plate body, the front of the plate body is the working surface of the template, and the back of the plate body is provided with a second connecting mechanism that cooperates with the first connecting mechanism; the upper and lower ends of the plate body are provided with connecting heads connected to other template segments; the back of the plate body is also provided with a fixing device for fixing the template to the groove wall of the groove, and the fixing device includes several anchor rods and an anchor rod driving mechanism, and multiple anchor rods are arranged at intervals up and down along the edge of the plate body. The anchor rods are arranged horizontally on the plate body and can slide left and right along their own axis. The anchor rod driving mechanism drives the anchor rod to move outward and insert into the groove wall of the groove, or to retract inward and pull out of the groove wall of the groove.

[0012] In some embodiments, the elevator is arranged at the upper edge of the groove, and the base of the elevator is pressed on the ground on both sides of the groove; multiple template segments are connected end to end and spliced ​​to form a template, and the top of the template is connected to the first connecting mechanism of the lifting device through a second connecting mechanism. The template extends downward into the groove, and the left and right sides of the template are aligned with the groove wall. The anchor rod driving mechanism of the template segment drives the anchor rod to be inserted into the groove wall to fix the template.

[0013] In some embodiments, the second connection mechanism includes a slot provided on the back side of the plate.

[0014] The first connecting mechanism includes a supporting crossbar matched with the card slot, and a crossbar driver driving the supporting crossbar to move horizontally.

[0015] The upper surface of the lifting platform is provided with slide rails parallel to each other, and the two ends of the supporting cross bar are slidably installed on the slide rails through slide seats; the cross bar driver includes a third hydraulic cylinder arranged parallel to the slide rails, one end of the third hydraulic cylinder is fixed on the lifting platform, and the execution end of the third hydraulic cylinder is connected to the supporting cross bar, and the third hydraulic cylinder pushes the supporting cross bar to engage in or disengage from the slot.

[0016] In some embodiments, the supporting cross bar is arranged on the back side of the plate body; the lifting device also includes a positioning system for positioning the plate body, and the positioning system includes a positioning baffle slidably arranged on the lifting platform, and a baffle driver for driving and positioning the positioning baffle.

[0017] The positioning baffle is against the front of the plate body, and the two ends of the positioning baffle are slidably arranged in the slide rail through a slide seat; the baffle driver includes a fourth hydraulic cylinder, the fourth hydraulic cylinder is installed on the lifting platform, and the execution end of the fourth hydraulic cylinder is connected to the positioning baffle and pushes the positioning baffle to move or fix.

[0018] In some embodiments, the lifting mechanism includes several first hydraulic cylinders and several second hydraulic cylinders vertically installed on the base, the top actuator ends of the first hydraulic cylinders are connected to the lifting device below to drive the lifting device below to move up and down, and the top actuator ends of the second hydraulic cylinders are connected to the lifting device above to drive the lifting device above to move up and down.

[0019] In some embodiments, a plurality of guide rods extending vertically upward are fixedly provided on the base, and the guide rods pass through the lifting platform of the upper lifting device and the lifting platform of the lower lifting device.

[0020] In some embodiments, the elevator also includes a feeding device for loading and unloading the template segments, the feeding device including a feeding arm and a fifth hydraulic cylinder driving the feeding arm; one end of the feeding device is hinged to the base, one end of the fifth hydraulic cylinder is hinged to the base, and the other end of the fifth hydraulic cylinder is hinged to the middle of the feeding arm, and the fifth hydraulic cylinder drives the feeding arm to rotate.

[0021] The feed arm is provided with a fixture, and the template segment is fixed to the feed arm through the fixture; feed arm.

[0022] In some embodiments, a plurality of sleeves are arranged at intervals along the left and right sides of the plate body, and the anchor rod is slidably sleeved in the sleeves; after the anchor rod moves outward, the outer end of the anchor rod extends outside the plate body; after the anchor rod moves inward, the outer end of the anchor rod shrinks into the projection of the plate body.

[0023] The anchor rod driving mechanism includes a driving rotating rod arranged along the extension direction of the template section, and the driving rotating rod is rotatably installed on the back side of the plate body; the driving rotating rod is provided with a threaded section, and a threaded sleeve is screwed and installed at the position where the threaded section is located, one end of the connecting rod is hinged on the threaded sleeve, and the other end of the connecting rod is hingedly connected to the inner end of the anchor rod; when the driving rotating rod rotates, the threaded sleeve moves up and down along the axis of the driving rotating rod, and the threaded sleeve pushes the anchor rod to slide in the left and right directions through the connecting rod.

[0024] After the template segments are connected end to end, the driving rods on adjacent template segments are connected through couplings; a rod driving motor is installed on the elevator; the rod driving motor is connected to the driving rod of the uppermost template segment to drive all the driving rods on the template to rotate.

[0025] In another aspect, the present invention provides a method for constructing a waterproof curtain using the aforementioned isolation system, comprising the following steps:

[0026] a. The slotting machine opens the groove and then divides the groove into several continuous groove sections;

[0027] b. Installing an anti-seepage membrane on the trench wall of the constructed trench section; the length of the anti-seepage membrane is greater than the length of the trench section, and the end of the anti-seepage membrane extends out of the trench section where it is located, and the portion of the anti-seepage membrane extending out of the trench section is the joint portion of the anti-seepage membrane;

[0028] c. Set the elevator to the top of the trench and at the dividing point between adjacent trench sections; use the elevator to splice several template sections end to end and lower them into the trench;

[0029] d. Control the anchor rod to extend outward and insert into the groove wall to fix the template to the groove;

[0030] e. Fold the joint of the anti-seepage membrane several times and place it close to the working surface of the template; place an isolation board on the side of the folded anti-seepage membrane close to the backfill area;

[0031] f. Backfill the trench of the constructed section;

[0032] g. After the backfill material solidifies, control the anchor rod to retract, so that the template can be separated from the trench wall, and then use the elevator to pull out the template and decompose the template into template segments;

[0033] h. Then unfold the folded joint part and fit it to the groove wall, and remove the isolation plate at the same time.

[0034] In some embodiments, in step c, the process of setting the template by the elevator includes the following specific steps:

[0035] c-1. Set the lift in place, adjust the upper and lower lifting platforms to the highest point, and adjust the positions of the positioning baffles at the same time if they are present;

[0036] c-2. Loading the template segments onto the elevator. In the presence of a feed arm, the feed arm is used to load the template segments onto the elevator. Loading with the feed arm further includes the following steps: placing the template segments on the feed arm and clamping them with a fixture; and lifting the feed arm upward until the template segments are in a vertical position.

[0037] c-3. The template segment is lowered, and at the same time, the support crossbar of the upper lifting device moves closer to the back of the template segment until the support crossbar of the upper lifting device is engaged with the groove on the back of the template segment, and the front of the template segment is against the positioning baffle;

[0038] c-4. The lifting platform of the upper lifting device descends, and the template section descends synchronously with the lifting platform of the upper lifting device;

[0039] c-5. The support crossbar of the lower lifting device moves toward the back of the template segment until it is engaged with the slot on the back of the template segment; then the support crossbar of the upper lifting device moves away from the template segment, and the support crossbar of the upper lifting device is disengaged from the slot;

[0040] c-6. The lifting platform of the lower lifting device descends, and the template descends synchronously with the lifting platform of the lower lifting device, while the lifting platform of the upper lifting device moves upward;

[0041] Repeat steps c-3 to c-6 until the template segment is lowered into place;

[0042] c-7. Place the next template segment on the feed arm, then lift the template segment upward to a vertical position. Then, connect and secure the bottom of the template segment on the feed arm to the top of the previous template segment. At the same time, connect the drive rods of the two template segments with a coupling.

[0043] Repeat steps c-2 to c-7, sequentially joining the template segments end to end and placing them into the groove;

[0044] Wherein, in step c, the action order of the upper lifting device and the lower lifting device can be interchanged.

[0045] The application of the above technical solution of the present invention to a trench section isolation system for anti-seepage curtain construction has the following effects:

[0046] The present invention first proposes a formwork for separating trenches for waterproof curtain construction. This formwork is composed of multiple joined formwork segments. Each segment includes a plate body that acts as a formwork. The plate body is equipped with anchor rods and an anchor rod drive mechanism. The anchor rods can be controllably inserted into the trench walls, thereby anchoring the formwork segment to the trench. Multiple formwork segments are joined together to form a complete isolation panel that separates trench segments.

[0047] At the same time, the present invention designs an elevator for use with the template, which is used to splice the template and set it in the groove. And after the construction is completed, the elevator can also pull out the template in the groove and restore it to the template segment for reuse. The working part of the elevator of the present invention is two independent upper and lower lifting devices. The lifting platform of the lifting device can move up and down under control. A first connecting mechanism is set on the lifting platform. The first connecting mechanism can cooperate with the second connecting mechanism on the template segment, so as to connect the lifting platform and the template segment and the lifting platform drives the template segment to move up and down. The upper and lower lifting devices move up and down alternately, and the template can be lowered by connecting the downward lifting device to the template, and conversely, the template can be pulled out by connecting the upward lifting device to the template.

[0048] The specific usage of the anti-seepage curtain construction trench section isolation system provided by the present invention is described in the construction method of the waterproof curtain for the isolation system.

[0049] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the anti-seepage curtain construction trench section isolation system of the present invention in working state;

[0051] Figure 2 This is a schematic diagram of the combined trench section isolation system for anti-seepage curtain construction according to the present invention;

[0052] Figure 3 yes Figure 2 Schematic diagram from another angle;

[0053] Figure 4 It is a schematic diagram of the elevator;

[0054] Figure 5 It is a schematic diagram of a template segment;

[0055] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0056] Figure 7 It is a schematic diagram of the connection between the beginning and the end of the template segment.

[0057] Description of Reference Numerals

[0058] 1- lift;

[0059] 1a-base;

[0060] 1b-lifting device, 1b1-lifting mechanism, 1b2-lifting platform, 1b3-first connecting mechanism, 1b3a-support crossbar, 1b3b-third hydraulic cylinder, 1b4-positioning system, 1b4a-positioning baffle, 1b4b-fourth hydraulic cylinder;

[0061] 1c-feeding device; 1c1-feeding arm;

[0062] 1d-guide rod;

[0063] 2- template segment;

[0064] 2a - plate, 2b - anchor rod, 2c - fixing device, 2c1 - driving rod, 2c2 - threaded sleeve, 2c3 - connecting rod, 2d - connector, 2e - slot;

[0065] 3- Grooves. DETAILED DESCRIPTION

[0066] The following is a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0067] In the present invention, unless otherwise specified, directional terms such as "upper" and "lower" generally refer to directions in the assembled state. "Inside" and "outside" refer to inside and outside relative to the outline of each component itself.

[0068] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0069] The present invention first provides a trench segment isolation system for anti-seepage curtain construction. The system comprises two main parts: an elevator 1 and a template. The template is lowered and fixed into a trench 3 to isolate the trench segments of the trench 3, and the elevator 1 is used to lower and retrieve the template.

[0070] Lift 1:

[0071] The lift 1 comprises a base 1a and two independent lifting devices 1b, one on top and the other on the bottom. Figure 2-4 .

[0072] The base 1a serves as the frame of the entire lift 1. It is a metal bracket. It can be positioned at the upper edge of the groove 3 and spans the entire length of the groove 3. Preferably, the base 1a can be equipped with wheels for easy mobility. With these wheels, a number of support legs are positioned around the base 1a. These legs can be lowered and supported on the ground at the top of the groove 3, raising the entire base 1a and stabilizing the structure during operation.

[0073] Two independent lifting devices 1b are installed on the base 1a. In order to avoid the two lifting devices 1b from interfering with each other and colliding during operation, the two lifting devices 1b are respectively arranged upper and lower. Of the two lifting devices 1b, the upper lifting device 1b is the upper lifting device 1b, and the lower lifting device 1b is the lower lifting device 1b. That is, the bottom dead point height of the lifting platform 1b2 of the upper lifting device 1b is higher than the top dead point height of the lifting platform 1b2 of the upper lifting device 1b. Preferably, the bottom dead point height of the lifting platform 1b2 of the upper lifting device 1b is parallel to the top dead point height of the lifting platform 1b2 of the upper lifting device 1b. The two lifting devices 1b are structurally identical.

[0074] Lifting device 1b includes a lifting platform 1b2 and a lifting mechanism 1b1 that drives lifting platform 1b2 up and down. Lifting mechanism 1b1 is mounted on base 1a. The actuator end of lifting mechanism 1b1 is connected to lifting platform 1b2. Lifting mechanism 1b1 drives lifting platform 1b2 up and down.

[0075] Lifting platform 1b2 is a platform used to install other equipment. It requires a clearance structure for the template to pass through. The structure of lifting platform 1b2 includes a load-bearing metal frame. The metal frame has an opening in the middle to serve as a clearance structure for the template to pass through.

[0076] Design of lifting mechanism 1b1:

[0077] The present invention provides the following design solutions.

[0078] 1. Lifting mechanism 1b1 is a winch mounted on base 1a. The winch is connected to platform 1b2 via cables and pulleys, driving platform 1b2 up and down. To use a winch, the winch must be higher than platform 1b2.

[0079] 2. To streamline the structure, the lifting mechanism 1b1 can also utilize a linear motor. Specifically, several vertical linear motor guide rails are mounted on the base 1a. The linear motor's mover is directly connected to the lifting platform 1b2. As the mover moves up and down on the linear motor guide rails, it drives the lifting platform 1b2 up and down. Two movers, one above and one below, can be mounted on the same linear motor guide rail, connecting the upper and lower lifting platforms 1b2 of the lifting device 1b, respectively.

[0080] 3. In this application, the travel of the lifting platform 1b2 does not need to be very large. Therefore, considering the comprehensive cost and other aspects, the lifting mechanism 1b1 adopts the form of a hydraulic cylinder, such as Figure 4 As shown in the figure, the hydraulic cylinder is mounted vertically directly on the base 1a, with the hydraulic rod's actuator directly connected to the lifting platform 1b2. Optionally, a raised mounting platform can be provided on the base 1a, with the hydraulic cylinder of the upper lifting device 1b mounted on the raised mounting platform. Both upper and lower lifting devices 1b utilize the same hydraulic cylinder model. The hydraulic cylinder mechanism is simple, and the valve can self-lock when closed.

[0081] Specific examples Figure 4 The lifting mechanism 1b1 includes several first hydraulic cylinders and several second hydraulic cylinders vertically installed on the base 1a. The top actuator end of the first hydraulic cylinder is connected to the lifting device 1b below to drive the lifting device 1b below to move up and down; the top actuator end of the second hydraulic cylinder is connected to the lifting device 1b above to drive the lifting device 1b above to move up and down.

[0082] When the first or third design of the lifting mechanism 1b1 is adopted, preferably, a plurality of guide rods 1d extending vertically upward are fixedly provided on the base 1a. The guide rods 1d prevent the lifting platform 1b2 from deflecting in the horizontal direction, ensuring that the lifting platform 1b2 moves only in the vertical direction. The guide rods 1d pass through the lifting platform 1b2 of the upper lifting device 1b and the lifting platform 1b2 of the lower lifting device 1b. Figure 1 As shown in , the guide rod 1d passes through the lifting platform 1b2 of the upper lifting device 1b and the lifting platform 1b2 of the lower lifting device 1b at the same time. A fixed seat can be extended upward on the base 1a, and the top of the guide rod 1d is connected to the fixed seat.

[0083] A first connecting mechanism 1b3 is provided on the lifting platform 1b2, and a second connecting mechanism is provided on the template segment 2. The first connecting mechanism 1b3 can switch between a connected state connected to the template and a disconnected state disconnected from the template. The first connecting mechanism 1b3 drives the template to move up and down.

[0084] Design of the first and second connecting mechanisms 1b3: The first and second connecting mechanisms 1b3 and 1b3 are a set of complementary locking or snap-fit ​​structures that can be switched between connected and disconnected states. When connected, the first and second connecting mechanisms 1b3 and 1b3 possess sufficient structural strength to support the weight of the entire formwork and overcome the friction between the formwork and the trench backfill material, thereby driving the formwork upward.

[0085] 1. The first connecting mechanism 1b3 and the second connecting mechanism can be a locking hook structure or a pair of mutually cooperating hooks.

[0086] 2. The first connecting mechanism 1b3 is a pin slidably mounted on the lifting platform 1b2. The pin is positioned horizontally. The second connecting mechanism is a pin hole fixed to the template segment 2 that mates with the pin. When the pin is inserted into the pin hole, the first connecting mechanism 1b3 and the second connecting mechanism are connected. The lifting platform 1b2 drives the pin up and down, which in turn drives the template segment 2 up and down. When the pin is pulled back out of the pin hole, the first connecting mechanism 1b3 and the second connecting mechanism are disconnected.

[0087] 3. If Figure 1-3 As shown in the figure, the second connecting mechanism includes a slot 2e formed on the back of the plate body 2a. The first connecting mechanism 1b3 includes a support crossbar 1b3a that engages with the slot 2e and a crossbar driver that drives the support crossbar 1b3a horizontally. The support crossbar 1b3a is arranged horizontally. Parallel slide rails are provided on the upper surface of the lifting platform 1b2, and the slide rails extend perpendicularly to the direction of extension of the support crossbar 1b3a. Both ends of the support crossbar 1b3a are slidably mounted on the slide rails via slides. The crossbar driver includes a third hydraulic cylinder 1b3b arranged parallel to the slide rails. One end of the third hydraulic cylinder 1b3b is fixed to the lifting platform 1b2, and the actuator end of the third hydraulic cylinder 1b3b is connected to the support crossbar 1b3a. The third hydraulic cylinder 1b3b pushes the support crossbar 1b3a into or out of the slot 2e. After the support crossbar 1b3a moves toward the template segment 2, it engages with the slot 2e of the template segment 2. At this time, the first connecting mechanism 1b3 and the second connecting mechanism are in a connected state. After the supporting crossbar 1b3a moves in the reverse direction and disengages from the slot 2e, the first connecting mechanism 1b3 and the second connecting mechanism are in a disengaged state.

[0088] like Figure 1 Figure 2 As shown in , the support crossbar 1b3a is arranged on the back side of the plate body 2a. The lifting device 1b also includes a positioning system 1b4 for positioning the plate body 2a. The positioning system 1b4 includes a positioning baffle 1b4a slidably arranged on the lifting platform 1b2, and a baffle driver that drives and positions the positioning baffle 1b4a. The positioning baffle 1b4a is against the front of the plate body 2a, and the two ends of the positioning baffle 1b4a are slidably arranged in the slide rail via a slide. The baffle driver includes a fourth hydraulic cylinder 1b4b, which is mounted on the lifting platform 1b2. The actuator end of the fourth hydraulic cylinder 1b4b is connected to the positioning baffle 1b4a and pushes the positioning baffle 1b4a to move or fix. When set, the positioning baffle 1b4a is set parallel to the working surface of the template, that is, the positioning baffle 1b4a is set perpendicular to the extension direction of the groove 3. The baffle driver can push the positioning baffle 1b4a to move along the extension direction of the groove 3, thereby adjusting the position of the template to a limited extent.

[0089] Feeding Device 1c: The elevator 1 also includes a feeding device 1c for loading and unloading formwork segments 2. This device 1c comprises a feeding arm 1c1 and a fifth hydraulic cylinder that drives it. One end of the feeding device 1c is hinged to the base 1a. One end of the fifth hydraulic cylinder is hinged to the base 1a, while the other end is hinged to the middle of the feeding arm 1c1. The fifth hydraulic cylinder rotates the feeding arm 1c1. The feeding arm 1c1 is equipped with a fixture, and the formwork segments 2 are secured to the feeding arm 1c1 via the fixture.

[0090] In a preferred embodiment, a material receiving platform is installed on the feed arm 1c1. The tooling fixture is arranged on the material receiving platform. During loading and unloading operations, the template segment 2 is installed on the material receiving platform. The material receiving platform is arranged parallel to the feed arm 1c1, and the distance between the material receiving platform and the feed arm 1c1 is adjustable. By adjusting the distance between the material receiving platform and the feed arm 1c1 to adapt to different positions of the positioning baffle 1b4a, it is ensured that the template segment 2 on the material receiving platform can be aligned with the template segment 2 on the lifting device 1b of the elevator 1 in a vertical state.

[0091] A winch is also installed at the free end of the feed arm 1c1. The winch is connected to the template segment 2 on the feed arm 1c1 via a cable. When the feed arm 1c1 is raised and the fixture is opened, the winch cable connects to the template segment 2 used for feeding and unloading. The winch controls the vertical movement of the template segment 2, allowing for fine-tuning of its position.

[0092] template:

[0093] The template comprises a plurality of template segments 2 connected end to end. A template segment 2 is an independent unit. The template segments 2 can be connected and fixed up and down to form an integral template.

[0094] The template segment 2 includes a plate 2a. Plate 2a is a metal plate, and its sides may be folded to enhance structural strength. The front of plate 2a serves as the template's working surface, which is flat. The back of plate 2a may be welded with reinforcements or equipped with other features. For example, a second connecting mechanism may be provided on the back of plate 2a to mate with the first connecting mechanism 1b3.

[0095] like Figure 3 As shown in , the template segments 2 are connected end to end to form a template, so the upper and lower ends of the plate body 2a are provided with connectors 2d for connecting with other template segments 2. The connector 2d at the head end and the connector 2d at the tail end of the plate body 2a can cooperate with each other. Figure 3 The connector 2d is in the form of an ear seat. When connection is required, the end-to-end splicing of the template segment 2 can be achieved by inserting the locking pin into the hole of the ear seat.

[0096] The back of the plate 2a is also equipped with a fixing device 2c for securing the formwork to the trench wall. This fixing device 2c includes several anchor rods 2b and an anchor rod driving mechanism. When the formwork segment 2 is positioned in the trench 3 in its working state, the outer ends of the anchor rods 2b point toward the trench wall. The anchor rods 2b slide outward and insert into the trench wall.

[0097] Multiple anchor rods 2b are provided on the formwork section 2. The anchor rods 2b are spaced apart vertically along the edge of the plate 2a. The extension direction of the anchor rods 2b is perpendicular to the extension direction of the plate 2a. The anchor rods 2b are arranged transversely on the plate 2a and can slide left and right along their own axes. An anchor rod drive mechanism drives the anchor rods 2b outward to insert into the groove wall or retract inward to remove from the groove wall. The anchor rod drive mechanism will be described in detail later.

[0098] During use, the lifter 1 is positioned at the upper edge of the trench 3, with its base 1a pressed against the ground on either side of the trench 3. Multiple formwork segments 2 are joined end-to-end to form the formwork. The top of the formwork is connected to the first connection mechanism 1b3 of the lifting device 1b via a second connection mechanism. The formwork extends downward into the trench 3, with its left and right sides aligned with the trench walls. The anchor drive mechanisms of the formwork segments 2 drive anchors 2b into the trench walls, securing the formwork.

[0099] Several sleeves are spaced along the left and right sides of the plate 2a, and the anchor rods 2b are slidably mounted within these sleeves. When the anchor rods 2b move outward, the outer ends of the anchor rods 2b extend outside the plate 2a. When the anchor rods 2b move inward, the outer ends of the anchor rods 2b retract into the projection of the plate 2a or within the outline of the plate 2a.

[0100] The anchor rod driving mechanism includes a driving rotating rod 2c1 arranged along the extension direction of the template section 2. The driving rotating rod 2c1 is rotatably mounted on the back side of the plate body 2a. The driving rotating rod 2c1 is provided with a threaded section. A threaded sleeve 2c2 is screwed onto the position where the threaded section is located. One end of the connecting rod 2c3 is hinged to the threaded sleeve 2c2, and the other end of the connecting rod 2c3 is hingedly connected to the inner end of the anchor rod 2b. When the driving rotating rod 2c1 rotates, the threaded sleeve 2c2 moves up and down along the axis of the driving rotating rod 2c1, and the threaded sleeve 2c2 further pushes the anchor rod 2b to slide in the left and right directions through the connecting rod 2c3.

[0101] After the formwork segments 2 are connected end to end, the drive rods 2c1 on adjacent formwork segments 2 are connected via a coupling. A rod drive motor is mounted on the elevator 1. This motor is connected to the drive rod 2c1 of the topmost formwork segment 2, driving all the drive rods 2c1 on the formwork. The drive rods 2c1 are the same length as the plate 2a, and their ends are splined, connecting the two drive rods 2c1 via a spline coupling.

[0102] Two connecting rods 2c3 are symmetrically positioned at the rear of the anchor rod 2b. Two threaded sleeves 2c2 are symmetrically positioned above and below the anchor rod 2b. Opposing threads are threaded onto the drive rod 2c1, located near the anchor rod 2b. These sleeves 2c2 are threadedly connected to the opposing threads. When the drive rod 2c1 rotates forward, the sleeves 2c2 approach each other, pushing the anchor rod 2b outward via the connecting rods 2c3. Conversely, when the drive rod 2c1 rotates backward, the sleeves 2c2 move away from each other, and the connecting rods 2c3 retract the anchor rod 2b inward.

[0103] Preferably, the anchor rods 2b are symmetrically arranged on the left and right sides of the driving rotating rod 2c1, and the two symmetrical anchor rods 2b share the same set of threaded sleeves 2c2.

[0104] Using the anti-seepage curtain construction trench section isolation system provided above, this application also proposes a waterproof curtain construction method.

[0105] The construction method of the waterproof curtain includes the following steps:

[0106] a. The groove 3 is opened by a groove opening machine, and then the groove 3 is divided into a plurality of continuous groove segments;

[0107] b. Installing an anti-seepage membrane on the trench wall of the constructed trench section; the length of the anti-seepage membrane is greater than the length of the trench section, and the end of the anti-seepage membrane extends out of the trench section where it is located, and the portion of the anti-seepage membrane extending out of the trench section is the joint portion of the anti-seepage membrane;

[0108] c. Place the elevator 1 at the top of the trench 3 and at the dividing point between adjacent trench sections; use the elevator 1 to splice several template sections 2 end to end and lower them into the trench 3;

[0109] d. Control the anchor rod 2b to extend outward and insert into the groove wall to fix the template to the groove 3;

[0110] e. Fold the joint of the anti-seepage membrane several times and place it close to the working surface of the template; place an isolation board on the side of the folded anti-seepage membrane close to the backfill area;

[0111] f. Backfill the trench 3 of the constructed trench section;

[0112] g. After the backfill material solidifies, the anchor rod 2b is controlled to retract, so that the template is separated from the trench wall, and then the template is pulled out by the elevator 1 and decomposed into template segments 2;

[0113] h. Then unfold the folded joint part and fit it to the groove wall, and remove the isolation plate at the same time.

[0114] Here, there is no particular order in time for steps b, c and d. It is only necessary to put the anti-seepage membrane and the template in place before step e, and finally fold the joint of the anti-seepage membrane and set it close to the template in step e.

[0115] Among them, in step c, the process of setting the template by the elevator 1 includes the following specific steps:

[0116] c-1. Set the lift 1 in place, adjust the lifting platforms 1b2 of the upper and lower lifting devices 1b to their highest points, and adjust the positions of the positioning baffles 1b4a while maintaining them.

[0117] c-2. Loading the template segment 2 onto the elevator 1. In the presence of a feed arm 1c1, the feed arm 1c1 is used to load the template segment 2 onto the elevator 1. Loading the template segment 2 onto the elevator 1 using the feed arm 1c1 further includes the following steps: placing the template segment 2 on the feed arm 1c1 and clamping it with a fixture; and lifting the feed arm 1c1 upward until the template segment 2 is in a vertical position.

[0118] c-3. Formwork segment 2 is lowered, and at the same time, the support crossbar 1b3a of the upper lifting device 1b approaches the back of formwork segment 2 until the support crossbar 1b3a of the upper lifting device 1b is engaged with the retaining groove 2e on the back side of formwork segment 2, and the front side of formwork segment 2 abuts against the positioning baffle 1b4a;

[0119] c-4. The lifting platform 1b2 of the upper lifting device 1b descends, and the template segment 2 descends synchronously with the lifting platform 1b2 of the upper lifting device 1b;

[0120] c-5. The support crossbar 1b3a of the lower lifting device 1b moves toward the back of the formwork segment 2 until it engages with the engaging groove 2e on the back side of the formwork segment 2. Then, the support crossbar 1b3a of the upper lifting device 1b moves away from the formwork segment 2 and disengages from the engaging groove 2e.

[0121] c-6. The lifting platform 1b2 of the lower lifting device 1b descends, and the template descends synchronously with the lifting platform 1b2 of the lower lifting device 1b. At the same time, the lifting platform 1b2 of the upper lifting device 1b moves upward;

[0122] Repeat steps c-3 to c-6 until the template segment 2 is lowered into place;

[0123] c-7. Place the next template segment 2 on the feed arm 1c1. Then, lift the template segment 2 upward to a vertical position. Then, connect and secure the bottom of the template segment 2 on the feed arm 1c1 to the top of the previous template segment 2. At the same time, connect the driving rods 2c1 of the two template segments 2 with a coupling.

[0124] Repeat steps c-2 to c-7, sequentially joining multiple template segments 2 end to end and placing them into the groove 3;

[0125] In step c, the action sequences of the upper lifting device 1b and the lower lifting device 1b can be interchanged.

[0126] To remove the template, simply reverse the above steps.

[0127] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0128] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0129] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An anti-seepage curtain construction trench section isolation system, characterized in that: including a lift (1) and a template; The elevator (1) comprises a base (1a) and two upper and lower independent lifting devices (1b), wherein the base (1a) is arranged on the upper edge of the groove (3); the lifting device (1b) comprises a lifting mechanism (1b1) mounted on the base (1a), the execution end of the lifting mechanism (1b1) is connected to the lifting platform (1b2), and the lifting mechanism (1b1) drives the lifting platform (1b2) to move up and down; a first connecting mechanism (1b3) is provided on the lifting platform (1b2), and the first connecting mechanism (1b3) can switch between a connected state connected to the template and a disconnected state disconnected from the template, and the first connecting mechanism (1b3) drives the template to move up and down; The template includes a plurality of template segments (2) spliced ​​end to end, the template segment (2) includes a plate body (2a), the front of the plate body (2a) is the working surface of the template, and the back of the plate body (2a) is provided with a second connection mechanism that cooperates with the first connection mechanism (1b3); the upper and lower ends of the plate body (2a) are provided with connectors (2d) connected to other template segments (2); the back of the plate body (2a) is also provided with a fixing device (2c) for fixing the template to the groove wall of the groove (3), the fixing device (2c) includes a plurality of anchor rods (2b) and an anchor rod driving mechanism, a plurality of the anchor rods (2b) are arranged at intervals up and down along the edge of the plate body (2a), the anchor rods (2b) are arranged transversely on the plate body (2a) and can slide in the left and right directions along their own axis, and the anchor rod driving mechanism drives the anchor rods (2b) to move outward and insert into the groove wall of the groove (3), or to be retracted inward and pulled out of the groove wall of the groove (3); A plurality of sleeves are arranged at intervals along the left and right sides of the plate body (2a), and the anchor rod (2b) is slidably sleeved in the sleeves; after the anchor rod (2b) moves outward, the outer end of the anchor rod (2b) extends outside the plate body (2a); after the anchor rod (2b) moves inward, the outer end of the anchor rod (2b) shrinks into the projection of the plate body (2a); The anchor rod driving mechanism comprises a driving rotating rod (2c1) arranged along the extension direction of the template section (2), and the driving rotating rod (2c1) is rotatably mounted on the back side of the plate body (2a); the driving rotating rod (2c1) is provided with a threaded section, and a threaded sleeve (2c2) is screwed and mounted at the position where the threaded section is located; one end of a connecting rod (2c3) is hinged to the threaded sleeve (2c2), and the other end of the connecting rod (2c3) is hingedly connected to the inner end of the anchor rod (2b); when the driving rotating rod (2c1) rotates, the threaded sleeve (2c2) moves up and down along the axis of the driving rotating rod (2c1), and the threaded sleeve (2c2) pushes the anchor rod (2b) to slide in the left and right directions through the connecting rod (2c3); After the template segments (2) are connected end to end, the driving rotating rods (2c1) on adjacent template segments (2) are connected via a coupling; a rotating rod driving motor is installed on the elevator (1); the rotating rod driving motor is connected to the driving rotating rod (2c1) of the topmost template segment (2) so as to be able to drive all the driving rotating rods (2c1) on the template to rotate.

2. The anti-seepage curtain construction trench section isolation system according to claim 1 is characterized in that: The elevator (1) is arranged on the upper edge of the groove (3), and the base (1a) of the elevator (1) is pressed on the ground on both sides of the groove (3); a plurality of the template segments (2) are connected end to end and spliced ​​to form the template, and the top of the template is connected to the first connecting mechanism (1b3) of the lifting device (1b) through the second connecting mechanism. The template extends downward into the groove (3), and the left and right sides of the template are aligned with the groove wall of the groove (3). The anchor rod driving mechanism of the template segment (2) drives the anchor rod (2b) to be inserted into the groove wall to fix the template.

3. The anti-seepage curtain construction trench section isolation system according to claim 1, characterized in that: The second connecting mechanism comprises a slot (2e) provided on the back side of the plate body (2a); The first connecting mechanism (1b3) comprises a supporting crossbar (1b3a) cooperating with the card slot (2e), and a crossbar driver driving the supporting crossbar (1b3a) to move horizontally; The upper surface of the lifting platform (1b2) is provided with slide rails parallel to each other, and both ends of the supporting cross bar (1b3a) are slidably mounted on the slide rails via slide seats; the cross bar driver includes a third hydraulic cylinder (1b3b) arranged parallel to the slide rails, one end of the third hydraulic cylinder (1b3b) is fixed on the lifting platform (1b2), and the execution end of the third hydraulic cylinder (1b3b) is connected to the supporting cross bar (1b3a), and the third hydraulic cylinder (1b3b) pushes the supporting cross bar (1b3a) to engage in or disengage from the engaging slot (2e).

4. The anti-seepage curtain construction trench section isolation system according to claim 3, characterized in that: The supporting crossbar (1b3a) is arranged on the back side of the plate body (2a); the lifting device (1b) further includes a positioning system (1b4) for positioning the plate body (2a), the positioning system (1b4) including a positioning baffle (1b4a) slidably arranged on the lifting platform (1b2), and a baffle driver for driving and positioning the positioning baffle (1b4a); The positioning baffle (1b4a) is pressed against the front face of the plate body (2a), and both ends of the positioning baffle (1b4a) are slidably arranged in the slide rail through the slide seat; the baffle driver includes a fourth hydraulic cylinder (1b4b), and the fourth hydraulic cylinder (1b4b) is installed on the lifting platform (1b2), and the execution end of the fourth hydraulic cylinder (1b4b) is connected to the positioning baffle (1b4a) and pushes the positioning baffle (1b4a) to move or fix.

5. The anti-seepage curtain construction trench section isolation system according to claim 1, characterized in that: The lifting mechanism (1b1) includes a plurality of first hydraulic cylinders and a plurality of second hydraulic cylinders vertically mounted on the base (1a), wherein the top actuator ends of the first hydraulic cylinders are connected to the lower lifting device (1b) to drive the lower lifting device (1b) to move up and down, and the top actuator ends of the second hydraulic cylinders are connected to the upper lifting device (1b) to drive the upper lifting device (1b) to move up and down.

6. The anti-seepage curtain construction trench section isolation system according to claim 5, characterized in that: A plurality of guide rods (1d) extending vertically upward are fixedly provided on the base (1a), and the guide rods (1d) pass through the lifting platform (1b2) of the upper lifting device (1b) and the lifting platform (1b2) of the lower lifting device (1b).

7. The anti-seepage curtain construction trench section isolation system according to claim 1, characterized in that: The elevator (1) further comprises a feeding device (1c) for loading and unloading the template segment (2), the feeding device (1c) comprising a feeding arm (1c1) and a fifth hydraulic cylinder driving the feeding arm (1c1); one end of the feeding device (1c) is hinged to the base (1a), one end of the fifth hydraulic cylinder is hinged to the base (1a), the other end of the fifth hydraulic cylinder is hinged to the middle of the feeding arm (1c1), and the fifth hydraulic cylinder drives the feeding arm (1c1) to rotate; The feed arm (1c1) is provided with a fixture, and the template segment (2) is fixed to the feed arm (1c1) via the fixture.

8. A method for constructing a waterproof curtain using the isolation system provided by any one of claims 1 to 7, characterized in that: The following steps are involved: a. A slotting machine opens a slot (3), and then divides the slot (3) into a plurality of continuous slot segments; b. installing an impermeable membrane on the trench wall of the trench section under construction; the length of the impermeable membrane is greater than the length of the trench section, the end of the impermeable membrane extends out of the trench section where it is located, and the portion of the impermeable membrane extending out of the trench section is the joint portion of the impermeable membrane; c. Setting the elevator (1) to the top of the groove (3) and at the dividing point between adjacent groove segments; using the elevator (1) to splice the template segments (2) end to end and lower them into the groove (3); d. controlling the anchor rod (2b) to extend outward and be inserted into the groove wall to fix the template to the groove (3); e. Folding the joint portion of the anti-seepage membrane several times and placing it close to the working surface of the template; placing an isolation board on the side of the folded anti-seepage membrane close to the backfill area; f. backfilling the trench (3) of the constructed trench section; g. After the backfill material solidifies, the anchor rod (2b) is controlled to retract, so that the template is separated from the groove wall, and then the template is pulled out by the elevator (1), and the template is decomposed into the template segments (2); h. Then unfold the folded joint portion and fit it onto the groove wall, and remove the isolation plate at the same time.

9. The method for constructing a waterproof curtain according to claim 8, characterized in that: In step c, the process of the elevator (1) setting the template includes the following specific steps: c-1. Place the lift (1) in place, adjust the lifting platforms (1b2) of the upper and lower lifting devices (1b) to the highest point, and simultaneously adjust the positions of the positioning baffles (1b4a) while the positioning baffles (1b4a) are in place; c-2. Loading the template segment (2) onto the elevator (1), and using the feed arm (1c1) to load the template segment (2) onto the elevator (1) under the condition that a feed arm (1c1) is present; wherein loading with the feed arm (1c1) further includes the following process: placing the template segment (2) on the feed arm (1c1) and clamping and fixing it with a fixture; the feed arm (1c1) is lifted upward until the template segment (2) is in a vertical state; c-3. The template segment (2) is lowered, and at the same time, the support crossbar (1b3a) of the upper lifting device (1b) approaches the back side of the template segment (2) until the support crossbar (1b3a) of the upper lifting device (1b) is engaged in the slot (2e) on the back side of the template segment (2), and at the same time, the front side of the template segment (2) is in contact with the positioning baffle (1b4a); c-4. The lifting platform (1b2) of the upper lifting device (1b) descends, and the template segment (2) descends synchronously with the lifting platform (1b2) of the upper lifting device (1b); c-5. The support cross bar (1b3a) of the lower lifting device (1b) approaches the back side of the template segment (2) until the support cross bar (1b3a) of the lower lifting device (1b) is engaged in the slot (2e) on the back side of the template segment (2); then the support cross bar (1b3a) of the upper lifting device (1b) moves away from the template segment (2), and the support cross bar (1b3a) of the upper lifting device (1b) is disengaged from the slot (2e); c-6. The lifting platform (1b2) of the lower lifting device (1b) descends, and the template descends synchronously with the lifting platform (1b2) of the lower lifting device (1b), while the lifting platform (1b2) of the upper lifting device (1b) moves upward; Repeat steps c-3 to c-6 until the template segment (2) is lowered into place; c-7. Place the next template segment (2) on the feed arm (1c1), then lift the template segment (2) upwards to a vertical position with the feed arm (1c1), and then connect and fix the bottom of the template segment (2) on the feed arm (1c1) and the top of the previous template segment (2) to each other, and at the same time connect the driving rods (2c1) of the two template segments (2) with a coupling; Repeat steps c-2 to c-7, sequentially splicing the multiple template segments (2) end to end and placing them into the groove (3); Wherein, in step c, the action sequence of the upper lifting device (1b) and the lower lifting device (1b) can be interchanged.

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