Seepage-proof curtain construction groove section isolation system and waterproof curtain construction method

Abstract

The invention relates to the technical field of soil and underground water pollutant prevention and control, in particular to an anti-seepage curtain construction groove section isolation system and a waterproof curtain construction method. The anti-seepage curtain construction groove section isolation system comprises a lifting machine and a formwork. The lifter comprises a base, an upper lifting device and a lower lifting device; the lifting device comprises a lifting mechanism mounted on the base; a first connecting mechanism is arranged on the lifting table; the template section comprises a plate body, and a second connecting mechanism matched with the first connecting mechanism is arranged on the back surface of the plate body; connectors connected with other template sections are arranged at the upper end and the lower end of the template body; the fixing device on the back face of the plate body comprises a plurality of anchor rods and an anchor rod driving mechanism, and the anchor rod driving mechanism drives the anchor rods to move outwards to be inserted into the groove wall. Through the arrangement, the formwork sections can be fixed to the wall of the groove, and then the formwork sections are arranged and recycled through the lifter, so that the construction progress of the waterproof curtain is greatly accelerated.

Description

Technical Field

[0001] The 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 were built without sufficient knowledge of environmental protection and pollution, and the pollution prevention measures were not in place. The stockpiling sites and discharge areas of the chemical plants lacked effective anti-seepage measures. These industrial pollutants will gradually pollute the soil and groundwater bodies where the factories are located. The pollution of soil by factories is characterized by high population density around, concentrated pollution areas, and large doses of pollutants. If they are not treated in time, the pollutants will continue to spread outward over time, polluting the natural environment in a wider range.

[0003] If the factory in the polluted area has been shut down, the contaminated soil in the polluted area can be emptied and moved away from densely populated areas for treatment; then the polluted area can be backfilled with new soil after pollution prevention and control treatment. This method can fundamentally solve the problem of factory soil pollution, but the cost is relatively high.

[0004] For factories that are still in use, anti-seepage curtains are generally used. Setting up anti-seepage curtains on the diffusion path of pollutants can isolate polluted areas from unpolluted areas, and can also effectively control the spread of pollutants and prevent them from affecting a wider area.

[0005] When the anti-seepage curtain is being constructed, the factory needs to stop production activities. Therefore, in order to reduce the factory downtime, the construction speed of the anti-seepage curtain needs to be accelerated. The existing anti-seepage curtain construction method mainly includes the following steps: 1. First, use the trenching engineering machinery to dig a trench; 2. Then manually lay the anti-seepage membrane in the trench section; 3. Finally, backfill the trench section.

[0006] Because the length of the anti-seepage curtain is generally long, and the speed of the engineering machinery in step 1 is fast, while the speed of laying the anti-seepage membrane in step 2 is slow. Therefore, in actual construction, the slotting machinery usually digs the entire anti-seepage curtain setting slot first, and then withdraws the slotting machinery. Then the entire slot is divided into multiple construction slot sections, and the construction of laying the anti-seepage membrane in step 2 and backfilling the slot sections in step 3 is carried out in sections.

[0007] This construction method requires isolating the trench section where steps 2 and 3 are being constructed from the adjacent trench section that has not been constructed. The prior art generally uses templates and template supports for isolation. After the trench section is backfilled, the templates and template supports need to be removed and then rebuilt in the next trench section.

[0008] This construction method, which requires the construction and disassembly of formwork and formwork supports for each slot section, will seriously slow down the overall construction progress. In addition, the process of building the formwork is also troublesome and consumes a lot of manpower. Therefore, a new construction method is needed to further speed up the construction progress of the anti-seepage curtain and reduce its labor workload. Summary of the invention

[0009] In order to overcome the problem that the existing anti-seepage curtain segmented construction method affects the rapid resumption of production activities of the factory due to the slow construction speed, 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 can be set on the upper edge of the groove; the lifting device includes a lifting mechanism installed on the base, 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 disconnected state disconnected from the template, and the first connecting mechanism drives the template to move up and down.

[0011] The template includes a plurality of template segments spliced ​​end to end, and the template segments include a plate body, the front side of the plate body is the working surface of the template, and the back side 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 side 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 a plurality of anchor rods and an anchor rod driving mechanism, and a plurality of anchor rods are arranged at intervals up and down along the edge of the plate body, and the anchor rods are transversely arranged on the plate body and can slide in the left and right directions along their own axis, and the anchor rod driving mechanism drives the anchor rod to move outward and be inserted into the groove wall of the groove, or to be retracted inward and pulled 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 board.

[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 get in or out of 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 driving and positioning the positioning baffle.

[0017] The positioning baffle is against the front side 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 a plurality of first hydraulic cylinders and a plurality of second hydraulic cylinders vertically mounted on a base, the top actuator ends of the first hydraulic cylinders being connected to a lower lifting device below to drive the lower lifting device to move up and down, and the top actuator ends of the second hydraulic cylinders being connected to an upper lifting device to drive the upper lifting device to move up and down.

[0019] In some embodiments, a plurality of guide rods extending vertically upward are fixedly disposed 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 includes 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, 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 section is fixed to the feed arm through the fixture; feed arm.

[0022] In some embodiments, a plurality of sleeves are spaced apart 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 out of 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 rotating rods on adjacent template segments are connected through couplings; a rotating rod driving motor is installed on the elevator; the rotating rod driving motor is connected to the driving rotating rod of the uppermost template segment to drive all the driving rotating rods on the template to rotate.

[0025] On the other hand, the present invention provides a method for constructing a waterproof curtain using the isolation system provided above, comprising the following steps:

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

[0027] b. Install the anti-seepage membrane on the trench wall of the trench section under construction; the length of the anti-seepage membrane is greater than the length of the trench section, 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 of 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 part of the anti-seepage membrane several times and set it close to the working surface of the template; set 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 trench section;

[0032] g. After the backfill material solidifies, control the anchor rod to retract, let the template separate from the groove wall, 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 the positioning baffles are in place;

[0036] c-2. Loading the template segment onto the elevator. In the presence of a feed arm, the template segment is loaded onto the elevator using the feed arm. Loading using the feed arm further includes the following process: placing the template segment onto the feed arm and clamping and fixing it using a fixture; the feed arm is lifted upward until the template segment is in a vertical state;

[0037] c-3. The template segment is lowered, and at the same time, the supporting crossbar of the upper lifting device moves closer to the back of the template segment until the supporting crossbar of the upper lifting device is inserted into the slot on the back side of the template segment, and at the same time, the front side 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 cross bar of the lower lifting device moves toward the back of the template segment until it is inserted into the slot on the back of the template segment; then the support cross bar of the upper lifting device moves away from the template segment, and the support cross bar 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, and then lift the template segment upward to a vertical position with the feed arm, and then connect and fix the bottom of the template segment on the feed arm and the top of the previous template segment to each other, and connect the driving rotating rods of the two template segments with a coupling;

[0043] Repeat steps c-2 to c-7, and sequentially join the end portions of the templates together and place them into the groove;

[0044] Among them, 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 an anti-seepage curtain construction trench section isolation system has the following effects:

[0046] The present invention first proposes a template for separating trenches for waterproof curtain construction. The template is composed of multiple template segments, and the template segment includes a plate body that acts as a template, and the plate body is provided with an anchor rod and an anchor rod driving mechanism. The anchor rod can be inserted into the trench wall of the trench in a controlled manner, thereby anchoring the template segment itself to the trench. Multiple template segments are spliced ​​up and down to form a partition board for dividing the 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 an upper and lower lifting device that is independent of each other. The lifting platform of the lifting device can move up and down under control. A first connecting mechanism is arranged 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 drive the template segment to move up and down by the lifting platform. 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 vice versa, the template can be pulled out by connecting the upward lifting device to the template.

[0048] The specific usage of the trench section isolation system for the anti-seepage curtain construction 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 It is a schematic diagram of the trench section isolation system for anti-seepage curtain construction of the present invention in working state;

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

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

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

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

[0055] Figure 6 yes Figure 5 The 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-supporting cross bar, 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 body, 2b-anchor rod, 2c-fixing device, 2c1-driving rotating rod, 2c2-threaded sleeve, 2c3-connecting rod, 2d-connecting head, 2e-slot;

[0065] 3- Groove. DETAILED DESCRIPTION

[0066] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

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

[0068] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

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

[0070] Lift 1:

[0071] The lift 1 comprises a base 1a and two mutually independent upper and lower lifting devices 1b. Figure 2-4 .

[0072] The base 1a is used as the frame of the entire lift 1. The base 1a is a metal bracket. The base 1a can be set on the upper edge of the groove 3 and span the top of the groove 3. Preferably, the base 1a can be provided with running wheels for easy movement. On the premise of providing running wheels, a plurality of support legs are arranged around the base 1a, and the support legs can be lowered and supported on the ground at the top of the groove 3 to lift the entire base 1a, so as to stabilize its own structure during work.

[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. Among 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] The lifting device 1b includes a lifting platform 1b2 and a lifting mechanism 1b1 for driving the lifting platform 1b2 to move up and down. The lifting mechanism 1b1 is installed on the base 1a. The execution end of the lifting mechanism 1b1 is connected to the lifting platform 1b2. The lifting mechanism 1b1 drives the lifting platform 1b2 to move up and down.

[0075] The lifting platform 1b2 is a platform for installing other facilities. The lifting platform 1b2 needs to be provided with a avoidance structure for the template to pass through. The structure of the lifting platform 1b2 includes a stress-bearing metal frame. The middle of the metal frame is opened as a avoidance structure for the template to pass through.

[0076] Design of lifting mechanism 1b1:

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

[0078] 1. The lifting mechanism 1b1 is a winch installed on the base 1a. The winch is connected to the lifting platform 1b2 through cables and pulleys, thereby driving the lifting platform 1b2 to move up and down. The winch solution requires that the height of the winch is higher than the lifting platform 1b2.

[0079] 2. From the perspective of simplifying the structure, the lifting mechanism 1b1 can also use a linear motor. The specific solution is to install a number of vertically arranged linear motor guide rails on the base 1a, and the mover of the linear motor is directly connected to the lifting platform 1b2. When the mover moves up and down on the linear motor guide rail, it can drive the lifting platform 1b2 to move up and down. Two upper and lower movers can be set on the same linear motor guide rail, respectively connecting the lifting platforms 1b2 of the upper and lower lifting devices 1b.

[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 hydraulic cylinder is directly mounted vertically on the base 1a, and the hydraulic rod execution end of the hydraulic cylinder is directly connected to the lifting platform 1b2. Optionally, a raised mounting platform is provided on the base 1a, and a hydraulic cylinder of the upper lifting device 1b is provided on the raised mounting platform. The upper and lower lifting devices 1b use the same type of hydraulic cylinder. The hydraulic cylinder mechanism is simple, and the valve can be self-locking after closing.

[0081] Specific as Figure 4 The lifting mechanism 1b1 includes a plurality of first hydraulic cylinders and a plurality of 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 lifting mechanism 1b1 is used, 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, and ensure that the lifting platform 1b2 only moves 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 fixing seat can be extended upward on the base 1a, and the top of the guide rod 1d is connected to the fixing seat.

[0083] A first connecting mechanism 1b3 is arranged on the lifting platform 1b2, and a second connecting mechanism is arranged on the template segment 2. The first connecting mechanism 1b3 can switch between a connected state connected with 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 connection mechanism 1b3 and the second connection mechanism: The first connection mechanism 1b3 and the second connection mechanism are a set of mutually matching locking structures or snap structures, which can be switched between a connected state and a disconnected state. When the first connection mechanism 1b3 and the second connection mechanism are connected to each other, they have sufficient structural strength to drive the deadweight of the entire template and overcome the friction between the template and the groove backfill material to drive the template to move 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 connection mechanism 1b3 is a pin shaft slidably arranged on the lifting platform 1b2. The pin shaft is arranged in the horizontal direction. The second connection mechanism is a pin hole fixed on the template segment 2 and matched with the pin shaft. When the pin shaft is inserted into the pin hole, the first connection mechanism 1b3 and the second connection mechanism are in a connected state. The lifting platform 1b2 drives the pin shaft to move up and down. The pin shaft drives the template segment 2 to move up and down. After the pin shaft is pulled out of the pin hole backward, the first connection mechanism 1b3 and the second connection mechanism are in a disengaged state.

[0087] 3. If Figure 1-3 As shown in , the second connection mechanism includes a slot 2e provided on the back of the plate body 2a. The first connection mechanism 1b3 includes a support crossbar 1b3a matched with the slot 2e, and a crossbar driver driving the support crossbar 1b3a to move horizontally. The support crossbar 1b3a is arranged in the horizontal direction. The upper surface of the lifting platform 1b2 is provided with slide rails parallel to each other, and the extension direction of the slide rails is perpendicular to the extension direction of the support crossbar 1b3a. Both ends of the support crossbar 1b3a are slidably mounted on the slide rails through a slide seat. 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 on the lifting platform 1b2, and the execution end of the third hydraulic cylinder 1b3b is connected to the support crossbar 1b3a, and the third hydraulic cylinder 1b3b pushes the support crossbar 1b3a to be clamped in or out of the slot 2e. After the support crossbar 1b3a moves toward the template segment 2, the support crossbar 1b3a will be clamped on the slot 2e of the template segment 2. At this time, the first connection mechanism 1b3 and the second connection mechanism are in a connection state. After the support crossbar 1b3a moves in the reverse direction and disengages from the slot 2e, the first connection mechanism 1b3 and the second connection mechanism are in a disengagement 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 driving and positioning 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 through a slide seat. The baffle driver includes a fourth hydraulic cylinder 1b4b, 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. When setting, 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] Introduction to the feeding device 1c: The elevator 1 also includes a feeding device 1c for loading and unloading the template segment 2, and the feeding device 1c includes 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, and the other end of the fifth hydraulic cylinder is hinged to the middle of the feeding arm 1c1. The fifth hydraulic cylinder drives the feeding arm 1c1 to rotate. The feeding arm 1c1 is provided with a fixture, and the template segment 2 is fixed to the feeding arm 1c1 through the fixture.

[0090] In a preferred embodiment, a receiving platform is installed on the feed arm 1c1. The tooling fixture is arranged on the receiving platform. During loading and unloading operations, the template segment 2 is installed on the receiving platform. The receiving platform is arranged parallel to the feed arm 1c1, and the distance between the receiving platform and the feed arm 1c1 is adjustable. By adjusting the distance between the 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 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 provided at the free end of the feed arm 1c1. The winch is connected to the template segment 2 on the feed arm 1c1 through a cable. When the feed arm 1c1 is erected and the fixture is opened, the cable of the winch is connected to the template segment 2 for feeding and discharging. The winch controls the template segment 2 to move up and down, and fine-tune the position of the template segment 2.

[0092] template:

[0093] The template includes 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 body 2a. The plate body 2a is a metal plate, and the side of the plate body 2a can be provided with a folded edge to enhance the structural strength. The front of the plate body 2a is the working surface of the template, and the working surface of the plate body 2a is straight. The back of the plate body 2a can be welded with a reinforcement structure, or other equipment can be set. For example, the back of the plate body 2a is provided with a second connecting mechanism that cooperates 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 body 2a is also provided with a fixing device 2c for fixing the template to the groove wall. The fixing device 2c includes a plurality of anchor rods 2b and an anchor rod driving mechanism. When the template segment 2 is set in the groove 3 in the working state, the outer end of the anchor rod 2b points to the groove wall of the groove 3. The anchor rod 2b slides outward and is inserted into the groove wall of the groove 3.

[0097] A plurality of anchor rods 2b are arranged on the template section 2. The anchor rods 2b are arranged at intervals up and down along the edge of the plate body 2a. The extension direction of the anchor rods 2b is perpendicular to the extension direction 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. The anchor rod driving mechanism drives the anchor rods 2b to move outward to be inserted into the groove wall, or to be retracted inward to be pulled out of the groove wall. The anchor rod driving mechanism will be described in detail later.

[0098] When in use, the lifter 1 is arranged at the upper edge of the groove 3, and the base 1a of the lifter 1 is pressed on the ground on both sides of the groove 3. Multiple template segments 2 are connected end to end and spliced ​​to form a template. The top of the template is connected to the first connection mechanism 1b3 of the lifting device 1b through the second connection mechanism. The template extends downward into the groove 3, and the left and right sides of the template are aligned with the groove wall. 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.

[0099] Several 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. When the anchor rod 2b moves outward, the outer end of the anchor rod 2b extends outside the plate body 2a; when the anchor rod 2b moves inward, the outer end of the anchor rod 2b shrinks into the projection of the plate body 2a or within the contour range of the plate body 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 and mounted at the location of the threaded section. One end of a connecting rod 2c3 is hinged on 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 template segments 2 are connected end to end, the driving rods 2c1 on the adjacent template segments 2 are connected through a coupling. A rod driving motor is installed on the elevator 1. The rod driving motor is connected to the driving rod 2c1 of the top template segment 2 to drive all the driving rods 2c1 on the template to rotate. The length of the driving rod 2c1 is the same as that of the plate body 2a, and the two ends of the driving rod 2c1 are set to a spline structure, and the two driving rods 2c1 are connected by a spline coupling.

[0102] Two connecting rods 2c3 are symmetrically arranged at the tail of the anchor rod 2b. Two threaded sleeves 2c2 are symmetrically arranged at the top and bottom of the anchor rod 2b, and a reverse threaded portion is arranged on the driving rotating rod 2c1 close to the anchor rod 2b, and the two threaded sleeves 2c2 are respectively screwed to the reverse threaded portion. When the driving rotating rod 2c1 rotates forward, the two threaded sleeves 2c2 approach each other, and the anchor rod 2b is pushed outward through the connecting rod 2c3; on the contrary, when the driving rotating rod 2c1 rotates reversely, the two threaded sleeves 2c2 move away from each other, and the connecting rod 2c3 drives the anchor rod 2b to retract 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 in the previous article, this application also proposes a construction method for the waterproof curtain.

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

[0106] a. The groove opening machine opens the groove 3, and then divides the groove 3 into a plurality of continuous groove sections;

[0107] b. Install the anti-seepage membrane on the trench wall of the trench section under construction; the length of the anti-seepage membrane is greater than the length of the trench section, 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. Set the elevator 1 to the top of the groove 3 and at the dividing point of adjacent groove sections; use the elevator 1 to splice several template sections 2 end to end and lower them into the groove 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 part of the anti-seepage membrane several times and set it close to the working surface of the template; set 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 groove wall, and then the template is pulled out by the elevator 1, and the template is 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 step b, step c and step d. It is only necessary to set 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 the highest point, and adjust the positions of the positioning baffles 1b4a at the same time under the condition that the positioning baffles 1b4a exist;

[0117] c-2. Loading the template segment 2 onto the elevator 1. In the presence of the feeding arm 1c1, the template segment 2 is loaded onto the elevator 1 using the feeding arm 1c1. The loading using the feeding arm 1c1 further includes the following process: placing the template segment 2 onto the feeding arm 1c1 and clamping and fixing it using a fixture; the feeding arm 1c1 is lifted upward until the template segment 2 is in a vertical state;

[0118] c-3, the template segment 2 is lowered, and at the same time, the supporting cross bar 1b3a of the upper lifting device 1b approaches the back of the template segment 2 until the supporting cross bar 1b3a of the upper lifting device 1b is inserted into 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 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 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 inserted into 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;

[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, while 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 put into place;

[0123] c-7. Place the next template segment 2 on the feed arm 1c1, and then lift the template segment 2 upward to a vertical position by the feed arm 1c1. 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 connect the driving rotating rods 2c1 of the two template segments 2 with a coupling.

[0124] Repeat steps c-2 to c-7, and sequentially join the end portions of the multiple template segments 2 and place them into the groove 3;

[0125] Among them, in step c, the action order 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, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope 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 suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0129] In addition, 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: It comprises a lifting machine (1) and a template; The lift (1) comprises a base (1a) and two upper and lower independent lifting devices (1b), wherein the base (1a) can be arranged on the upper edge of the groove (3); the lifting device (1b) comprises a lifting mechanism (1b1) installed 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 arranged 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 comprises a plurality of template segments (2) connected end to end, wherein the template segment (2) comprises a plate body (2a), the front side of the plate body (2a) being the working side of the template, and the back side of the plate body (2a) being provided with a second connection mechanism cooperating with the first connection mechanism (1b3); the upper and lower ends of the plate body (2a) are provided with connection heads (2d) connected with other template segments (2); the back side 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), and the fixing device (2c) comprises a plurality of anchor rods (2b) and an anchor rod driving mechanism, wherein the plurality of 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 be inserted into the groove wall of the groove (3), or to be retracted inward and pulled out of the groove wall of the groove (3).

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 is characterized in that: The second connection 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) matched 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 the two ends of the supporting cross bar (1b3a) are slidably mounted on the slide rails through slide seats; the cross bar driver comprises 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), 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 is characterized in that: The supporting cross bar (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), and the positioning system (1b4) includes 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 side of the plate body (2a), and the two 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); the top actuator ends of the first hydraulic cylinders are connected to the lower lifting device (1b) below to drive the lower lifting device (1b) to move up and down; the top actuator ends of the second hydraulic cylinders are connected to the upper lifting device (1b) above 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 arranged on the base (1a), and the guide rods (1d) pass through a lifting platform (1b2) of the upper lifting device (1b) and a 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) also includes a feeding device (1c) for loading and unloading the template segment (2), and the feeding device (1c) includes a feeding arm (1c1) and a fifth hydraulic cylinder driving the feeding arm (1c1); one end of the feeding device (1c) is hinged on the base (1a), one end of the fifth hydraulic cylinder is hinged on the base (1a), and the other end of the fifth hydraulic cylinder is hinged on the middle part 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. The anti-seepage curtain construction trench section isolation system according to claim 1, characterized in that: 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 on 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 top template segment (2) so as to be able to drive all the driving rotating rods (2c1) on the template to rotate.

9. A method for constructing a waterproof curtain using the isolation system provided by any one of claims 1 to 8, characterized in that: The following steps are involved: a. A groove opening machine opens a groove (3), and then divides the groove (3) into a plurality of continuous groove segments; b. installing an impermeable membrane on the groove wall of the groove section under construction; the length of the impermeable membrane is greater than the length of the groove section, the end of the impermeable membrane extends out of the groove section where it is located, and the part of the impermeable membrane extending out of the groove section is the joint part of the impermeable membrane; c. Setting the elevator (1) to the top of the groove (3) and at the dividing point of adjacent groove segments; using the elevator (1) to splice a plurality of 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 so as to fix the template to the groove (3); e. Fold the joint part of the anti-seepage membrane several times and place it close to the working surface of the template; and place an isolation plate 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 is solidified, 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.

10. The method for constructing a waterproof curtain according to claim 9, characterized in that: In step c, the process of the elevator (1) setting the template comprises the following specific steps: c-1. The lift (1) is set in place, the lifting platforms (1b2) of the upper and lower lifting devices (1b) are adjusted to the highest point, and the positions of the positioning baffles (1b4a) are adjusted at the same time under the condition that the positioning baffles (1b4a) are present; c-2. Loading the template segment (2) onto the elevator (1). In the presence of a feeding arm (1c1), using the feeding arm (1c1) to load the template segment (2) onto the elevator (1); wherein loading using the feeding arm (1c1) further includes the following process: placing the template segment (2) on the feeding arm (1c1) and clamping and fixing it with a fixture; the feeding 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 supporting cross bar (1b3a) of the upper lifting device (1b) approaches the back side of the template segment (2) until the supporting cross bar (1b3a) of the upper lifting device (1b) is inserted into 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 against the positioning baffle (1b4a); c-4. The lifting platform (1b2) of the lifting device (1b) above descends, and the template segment (2) descends synchronously with the lifting platform (1b2) of the lifting device (1b) above; 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 inserted into 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, placing the next template segment (2) on the feed arm (1c1), then the feed arm (1c1) lifts the template segment (2) upward to a vertical position, and then the bottom of the template segment (2) on the feed arm (1c1) and the top of the previous template segment (2) are connected and fixed to each other, and at the same time, the driving rotating rods (2c1) of the two template segments (2) are connected by a coupling; Repeat steps c-2 to c-7, sequentially splicing the plurality of 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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