An assembled fixing device for municipal engineering drainage channel construction

Abstract

The application relates to the technical field of municipal engineering equipment, in particular to an assembled fixing device for municipal engineering drainage open channel construction, which is characterized in that the technical scheme comprises a drainage open channel, the top of the drainage open channel is provided with slopes at both ends, and the drainage open channel is constructed into a net-spraying concrete layer; a Larsen steel sheet pile is uniformly installed on the inner wall of the drainage open channel through a pile driver; the device further comprises an I-shaped steel welded on the Larsen steel sheet pile, and the I-shaped steel is horizontally arranged; a support plate device is installed on the I-shaped steel through positioning connecting pieces at both ends; and the support plate device supports the I-shaped steel at both ends in an arch shape through an arc-shaped metal plate structure; the device has the beneficial effects that: the nuts on the rotating screw abut against spring steel one, and two groups of spring steel one are expanded outward; the ends of the spring steel one are in an arch shape to support the ends of the Larsen steel sheet pile, and sufficient supporting force is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal engineering equipment, in particular to an assembled fixing device for municipal engineering drainage channel construction. BACKGROUND

[0002] There is a comprehensive pipe gallery construction project in the municipal engineering drainage channel, and a steel sheet pile drainage channel diversion construction technology needs to be used, and the specific process is: construction preparation-measurement and line laying-steel sheet pile erection-steel support erection-steel sheet pile leakage stoppage-soap river diversion-steel sheet pile pulling out;

[0003] When the steel support is erected, the length of the steel support is first set, and then the steel support is fixed on the steel sheet pile through bolts or supported by a hydraulic cylinder support; when the hydraulic cylinder support is used for construction, the hydraulic cylinder is moved inside the drainage channel by a crane, the hydraulic cylinder is extended outward and abuts against both ends of the steel sheet pile to support the side wall of the drainage channel; when the steel support is used for fixing, the steel support is moved inside the drainage channel by a crane, and is fixed at both ends of the steel sheet pile by pads or bolts to support the side wall of the drainage channel.

[0004] The existing two structures are heavy in support device, need to be moved by a crane, the crane equipment is not easy to enter the construction site in an uneven place, and the steel support cannot be extended to both ends, pads are needed to extend and contact the steel sheet pile, the steel support of a corresponding length needs to be selected according to the width of the drainage channel, and if the hydraulic cylinder support is used, the hydraulic cylinder equipment is too heavy, needs to be carried by a large device, and needs to be driven by a device to extend the hydraulic cylinder, although it can be extended compared with the steel support, but the operation is relatively complicated.

[0005] Therefore, it is necessary to invent an assembled fixing device for municipal engineering drainage channel construction. SUMMARY

[0006] To this end, the present application provides an assembled fixing device for municipal engineering drainage channel construction, which is welded with an I-beam on a Larsen steel sheet pile, the positioning column of the positioning connecting piece is inserted into the inner wall of the T-shaped through hole, then rotated by ninety degrees, placed at the bottom of the T-shaped through hole, the spring steel one position is set, then the screw rod is inserted into the positioning cylinder of the spring steel one, then the nut is installed on the screw rod, the nut is rotated to abut against the spring steel one, and the two groups of spring steel ones are expanded outward, so that the both ends of the spring steel one support the Larsen steel sheet pile, thereby solving the problem that the existing steel support cannot be extended to both ends, pads are needed to extend and contact the steel sheet pile, and the steel support of a corresponding length needs to be selected according to the width of the drainage channel.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a kind of municipal engineering drainage channel construction with assembled fixing device, including drainage channel, the top of the drainage channel both ends is set as slope, and is constructed into net spraying concrete layer, the numerical direction of the inner wall of the drainage channel is installed evenly by pile driver installation Larsen steel sheet pile, it further include I-steel welded on Larsen steel sheet pile, and I-steel is transversely horizontally arranged;

[0008] Support plate device, the both ends of the support plate device are installed on the I-steel by positioning connector, and the support plate device is archedly supported to the both ends of the I-steel by the arc-shaped metal plate structure;

[0009] Adjusting screw, the adjusting screw for adjusting the arching shrinkage angle is installed on the support plate device.

[0010] Preferably, T-shaped through holes are formed in the I-steel, the positioning connector includes a first plate body, a second plate body is fixedly installed on the right end of the first plate body by bolts, a positioning column is fixedly installed on the left end of the first plate body, a crossbar pin is fixedly installed on the left end of the positioning column, the crossbar pin is inserted into the inner wall of the T-shaped through hole and rotated by 90 degrees to enter the inner wall of the I-steel, and a connecting plate is fixedly installed on the right end of the second plate body.

[0011] Preferably, the support plate device includes a first spring steel and a second spring steel, the length of the second spring steel is less than that of the first spring steel, the second spring steel is fixedly installed in the middle of the first spring steel, through holes are formed in the middle of the first spring steel and the second spring steel, a positioning cylinder is fixedly installed on the inner wall of the through hole, a semicircular cylinder ring is fixedly installed on the inner wall of the positioning cylinder, cylinders are fixedly installed on the both ends of the first spring steel, and the cylinders are installed on the connecting plate by bolts; the adjusting screw includes a screw rod, and positioning holes are formed in the both ends of the screw rod.

[0012] Preferably, the support plate device is provided in two groups and is installed above and below the inner wall of the drainage channel, and the concave directions of the arcs of the two groups of first spring steels are opposite to each other.

[0013] Preferably, the bottom of the screw rod is provided with a positioning head after passing through the positioning cylinder of the lower first spring steel, the positioning head is connected to the positioning hole of the screw rod by bolts, a nut is threadedly connected to the top of the positioning hole, and the bottom of the nut contacts the top of the positioning cylinder of the upper first spring steel.

[0014] Preferably, the support plate device is provided in two groups and is installed above and below the inner wall of the drainage channel, and the concave directions of the arcs of the two groups of first spring steels are opposite to each other.

[0015] Preferably, the screw rod is inserted into the inner wall of the positioning cylinder of the two groups of first spring steels, nuts are installed above and below the screw rod, the top of the upper nut contacts the bottom of the positioning cylinder of the upper first spring steel, and the bottom of the lower nut contacts the top of the positioning cylinder of the lower first spring steel.

[0016] Preferably, the support plate device is provided as four groups, and each two groups are installed above and below the inner wall of the drainage open channel, the inner recess direction of the topmost group of spring steels one and the bottommost group of spring steels one is opposite, and the inner recess direction of the middle two groups of spring steels one is opposite.

[0017] Preferably, the screw rod is inserted into the inner wall of the positioning cylinder of the four groups of spring steels one, the bottom of the screw rod is installed with a positioning head after passing through the positioning cylinder of the lowermost spring steel one, the positioning head is connected into the positioning hole of the screw rod through bolts, the top of the positioning hole is threadedly connected with a nut, and the bottom of the nut contacts the top of the positioning cylinder of the uppermost spring steel one; the upper and lower sides of the screw rod are installed with nuts, the top of the upper nut contacts the bottom of the positioning cylinder of the second group of spring steels one from top to bottom, and the bottom of the lower nut contacts the top of the positioning cylinder of the third group of spring steels one from top to bottom.

[0018] The beneficial effects of the present application are that the spring steel is used to support the Larssen steel sheet pile, compared with the prior art, the spring steel can be conveniently carried, and manual carrying can also be used in poor terrain to assemble;

[0019] The number of spring steels can be increased or decreased according to the stress condition of the Larssen steel sheet pile of the drainage open channel, the convenience of using the spring steel is greatly improved, and the recess direction of the spring steel is adjusted according to the structure inside the drainage open channel, the assembly applicability of the spring steel is improved, and the assembly efficiency is improved;

[0020] The spring steel two is installed at the middle position of the inner side of the spring steel one arc, the toughness and strength of the spring steel one are improved, and the number of spring steel two can be adjusted according to the length of the spring steel one;

[0021] The inner wall of the positioning cylinder is fixedly installed with a semicylindrical ring, the two ends of the spring steel one are fixedly installed with a cylinder, and the cylinder is installed on the connecting plate through bolts; the semicylindrical ring is a semicircular structure extending outward, which facilitates the smooth passing of the screw rod through the spring steel one and prevents damage to the threads on the surface of the screw rod;

[0022] The nut on the screw rod is rotated to abut against the spring steel one, and the two groups of spring steels one are expanded outward; the two ends of the spring steel one are in an arched state to support the two ends of the Larssen steel sheet pile, and sufficient supporting force is provided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The top view provided by the present application;

[0024] Figure 2 The front view of example 1 provided by the present application;

[0025] Figure 3 The side view of the I-shaped steel provided by the present application;

[0026] Figure 4 A sectional view of the positioning connector provided by the present application installed on an I-beam;

[0027] Figure 5 A top view of the positioning cylinder provided by the present application installed on a spring steel;

[0028] Figure 6 A schematic diagram of the connection between the cylinder and the connecting plate provided by the present application;

[0029] Figure 7 A front view of embodiment 2 provided by the present application;

[0030] Figure 8 A front view of embodiment 3 provided by the present application;

[0031] Figure 9 A schematic diagram of the connection between the cylinder and the connecting plate provided by the present application in embodiment 3.

[0032] In the figure: drainage open channel 100, shotcrete layer 110, Larsen steel sheet pile 200, I-beam 300, T-shaped through hole 310, positioning connector 400, plate body one 410, positioning column 411, crossbar pin 412, plate body two 420, connecting plate 430, support plate device 500, spring steel one 510, through hole 511, spring steel two 520, positioning cylinder 530, semicircular column ring 531, cylinder 540, adjusting screw 600, screw 610, positioning hole 620, positioning head 630, nut 640, bolt 700. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0034] Embodiment 1: refer to the accompanying drawings Figures 1-6 ;

[0035] The present application provides an assembled fixing device for municipal engineering drainage open channel construction, which comprises a drainage open channel 100, the top of the drainage open channel 100 is provided with slopes at both ends, and is constructed into a shotcrete layer 110, the inner wall of the drainage open channel 100 is installed with Larsen steel sheet piles 200 in the numerical direction by a pile driver, the Larsen steel sheet pile is also called U-shaped steel sheet pile, which is used as a new type of building material to make a retaining wall for soil, water and sand when building a bridge cofferdam, laying a large pipeline and excavating a temporary ditch; it is used as a retaining wall, a retaining wall, a dike protection bank and the like in a wharf and an unloading yard, and plays an important role in engineering; the Larsen steel sheet pile for cofferdam not only has the advantages of green and environmental protection, but also has the advantages of fast construction speed, low construction cost and good waterproof function.

[0036] Also includes I-beam 300 welded on the Larsen steel sheet pile 200, and the I-beam 300 is transversely horizontally arranged, the I-beam 300 is welded on the tensile steel sheet pile 200, and the positioning connector 400 is connected on the I-beam 300; the I-beam 300 is fixed on the Larsen steel sheet pile 200 by welding two position points at both ends of the I-beam 300, so that the I-beam 300 is separated from the Larsen steel sheet pile 200 by using an angle grinder during later removal;

[0037] Support plate device 500, both ends of the support plate device 500 are installed on the I-beam 300 through the positioning connector 400, and the support plate device 500 supports the I-beam 300 at both ends in an arch shape through an arc-shaped metal plate structure;

[0038] Adjusting screw 600, the adjusting screw 600 for adjusting the arch contraction angle is installed on the support plate device 500.

[0039] Further, the I-beam 300 is provided with a T-shaped through hole 310, the T-shaped through hole 310 is provided, the cross rod pin 412 is inserted into the inner wall of the T-shaped through hole 310, and after insertion, it is rotated by ninety degrees into the lower part of the T-shaped through hole 310 of the I-beam 300, so as to prevent the positioning connector 400 from separating from the I-beam 300;

[0040] The positioning connector 400 includes a plate body one 410, the plate body one 410 is fixedly installed on the plate body two 420 through a bolt at the right end, the plate body one 410 is fixedly installed on the positioning column 411 at the left end, the positioning column 411 is fixedly installed on the cross rod pin 412 at the left end, and the plate body two 420 is fixedly installed on the connecting plate 430; the plate body two 420 and the plate body one 410 adopt a split mounting structure, the positioning column 411 passes through the inner wall of the plate body one 410, the stability of the positioning column 411 is improved, and the connecting plate 430 is convenient for connecting the cylinder 540 of the spring steel one 510;

[0041] Further, the support plate device 500 includes spring steel one 510 and spring steel two 520, the length of the spring steel two 520 is less than that of the spring steel one 510, the spring steel two 520 is fixedly installed in the middle of the spring steel one 510, the spring steel one 510 refers to the steel specially used for manufacturing springs and elastic elements due to the elasticity in the quenched and tempered state; the elasticity of the steel depends on the ability of elastic deformation, that is, within a specified range, the ability of elastic deformation enables it to bear a certain load, and after the load is removed, no permanent deformation occurs, the spring steel two 520 is installed at the intermediate position of the inner side of the arc of the spring steel one 510, the toughness and strength of the spring steel one 510 are improved, and the spring steel two 520 can adjust the number of superpositions according to the length of the spring steel one 510;

[0042] The spring steel one 510 and the spring steel two 520 are provided with a through hole 511, the inner wall of the through hole 511 is fixedly installed with a positioning cylinder 530, the inner wall of the positioning cylinder 530 is fixedly installed with a semicylindrical ring 531, the two ends of the spring steel one 510 are fixedly installed with a cylinder 540, and the cylinder 540 is installed on the connecting plate 430 through bolts 700; the semicylindrical ring 531 is a semicircular structure extending outward, facilitating the smooth passing of the screw rod 610 through the spring steel one 510, and preventing damage to the threads on the surface of the screw rod 610.

[0043] The adjusting screw rod 600 comprises a screw rod 610, and the two ends of the screw rod 610 are provided with positioning holes 620; the positioning holes 620 facilitate the installation of positioning heads 630.

[0044] Further, the support plate device 500 is provided in two groups and is installed above and below the inner wall of the open drainage channel 100, and the two groups of spring steel one 510 are oppositely arranged in the direction of the arc concave; the screw rod 610 is installed with the positioning head 630 after penetrating through the positioning cylinder 530 of the spring steel one 510 below, the positioning head 630 is connected in the positioning hole 620 of the screw rod 610 through bolts, the positioning hole 620 is threadedly connected with a nut 640, and the bottom of the nut 640 contacts the top of the positioning cylinder 530 of the spring steel one 510 above; the two ends of the spring steel one 510 are supported in an arched state to support the two ends of the Larsen steel sheet pile 200, sufficient support force is provided, and the soil on the side wall of the open drainage channel is prevented from tilting and falling.

[0045] The use process of the present application is as follows: the Larsen steel sheet pile 200 is inserted into the side wall of the open drainage channel 100 through a pile driver, the I-shaped steel 300 is welded on the Larsen steel sheet pile 200, the positioning column 411 of the positioning connecting piece 400 is inserted into the inner wall of the T-shaped through hole 310, then it is rotated by ninety degrees and placed at the bottom of the T-shaped through hole 310, the cylinder 540 at the end of the spring steel one 510 is fixed on the connecting plate 430 through bolts 700, the positions of the two groups of spring steel one 510 are set, the screw rod 610 is inserted into the positioning cylinder 530 between the two groups of spring steel one 510, the bottom of the screw rod 610 is connected with the positioning hole 620 through bolts, the positioning head 630 is fixed on the screw rod 610, the top of the screw rod 610 is threadedly connected with the nut 640, the two groups of spring steel one 510 are pressed by rotating the nut 640 through a wrench, so that the two ends of the spring steel one 510 support the Larsen steel sheet pile 200.

[0046] Example 2: refer to the attached Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 ;

[0047] Further, the support plate device 500 is arranged as two groups, installed above and below the inner wall of the drainage open channel 100, and the directions of the arc concave of the spring steel one 510 of the two groups are opposite;

[0048] Further, the screw rod 610 is inserted into the inner wall of the positioning cylinder 530 of the two groups of spring steel one 510, nuts 640 are installed above and below the screw rod 610, the top of the upper nut 640 contacts the bottom of the positioning cylinder 530 of the upper spring steel one 510, and the bottom of the lower nut 640 contacts the top of the positioning cylinder 530 of the lower spring steel one 510;

[0049] Compared with embodiment 1, the spring steel one 510 of embodiment 2 is assembled in the opposite direction of the arc concave, and the installation mode can be selected according to whether there is an obstacle at the bottom of the drainage open channel. If there is an obstacle at the bottom of the drainage open channel, the structure of the assembled structure of embodiment 2 is adopted, so that the lower spring steel one 510 does not contact the bottom of the drainage open channel, facilitating assembly. According to the actual use state of the drainage open channel, the two groups of spring steel one 510 can be assembled into an upper arch structure or a lower arch structure;

[0050] The use process of the present application is as follows: the person skilled in the art inserts the Larson steel sheet pile 200 into the side wall of the drainage open channel 100 through the pile driver, welds the I-beam 300 on the Larson steel sheet pile 200, inserts the positioning column 411 of the positioning connecting piece 400 into the inner wall of the T-shaped through hole 310, then rotates by 90 degrees, places it at the bottom of the T-shaped through hole 310, then fixes the cylinder 540 at the end of the spring steel one 510 on the connecting plate 430 through the bolt 700, sets the positions of the two groups of spring steel one 510, inserts the screw rod 610 into the positioning cylinder 530 of one group of spring steel one 510 first, then installs the two nuts 640 on the screw rod 610, then inserts the screw rod 610 through the positioning cylinder 530 of the other group of spring steel one 510, rotates the two nuts 640 to abut against the spring steel one 510, and expands the two groups of spring steel one 510 outward, so that the two ends of the spring steel one 510 support the Larson steel sheet pile 200.

[0051] Embodiment 3: refer to the attached Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9 ;

[0052] Further, the support plate device 500 is arranged as four groups, and each two groups are installed above and below the inner wall of the drainage open channel 100, and the directions of the arc concave of the spring steel one 510 of the topmost group and the bottommost group are opposite, and the directions of the arc concave of the middle two groups of spring steel one 510 are opposite;

[0053] Further, the screw rod 610 is inserted into the inner wall of the positioning cylinder 530 of the four groups of spring steel one 510, the bottom of the screw rod 610 passes through the positioning cylinder 530 of the lowermost spring steel one 510 and is installed with the positioning head 630, the positioning head 630 is connected in the positioning hole 620 of the screw rod 610 through bolts, the positioning hole 620 is connected with the nut 640 at the top through threads, the bottom of the nut 640 contacts the top of the positioning cylinder 530 of the uppermost spring steel one 510; the upper and lower nuts 640 are installed on the screw rod 610, the top of the upper nut 640 contacts the bottom of the positioning cylinder 530 of the second group of spring steel one 510 from top to bottom, and the bottom of the lower nut 640 contacts the top of the positioning cylinder 530 of the third group of spring steel one 510 from top to bottom.

[0054] Compared with examples 2 and 1, the example 3 increases two groups of spring steel one 510, when the soil humidity is large and the pressure on the Larsen steel sheet pile 200 is enhanced, the assembly mode of the example 3 is adopted, the support force of the spring steel one 510 on the Larsen steel sheet pile 200 is enhanced, the Larsen steel sheet pile 200 is prevented from being affected by the humid soil and causing the Larsen steel sheet pile 200 to slide into the drainage open channel;

[0055] The use process of the present application is as follows: the Larsen steel sheet pile 200 is inserted into the side wall of the drainage open channel 100 by the pile driver, the I-shaped steel 300 is welded on the Larsen steel sheet pile 200, the positioning column 411 of the positioning connecting piece 400 is inserted into the inner wall of the T-shaped through hole 310, then it is rotated by ninety degrees and placed at the bottom of the T-shaped through hole 310, then the cylinder 540 at the end of the spring steel one 510 is fixed on the connecting plate 430 through the bolt 700, after the four groups of spring steel one 510 are positioned, the screw rod 610 is first inserted into the positioning cylinder 530 of the upper two groups of spring steel one 510, then the two nuts 640 are installed on the screw rod 610, and then the screw rod 610 passes through the positioning cylinder 530 of the lower two groups of spring steel one 510, the bottom of the screw rod 610 is fixed and installed through the positioning head 630, the top of the screw rod 610 is installed through the nut 640, and the four groups of spring steel one 510 are expanded outwardly by rotating the three nuts 640, so that the two ends of the spring steel one 510 support the Larsen steel sheet pile 200.

[0056] The above is only a preferred embodiment of the present application, and any skilled person in the art can modify the present application by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement according to the technical solutions of the present application is within the scope of protection claimed by the present application.

Claims

1. A modular fixing device for the construction of an open drainage channel in municipal engineering, comprising an open drainage channel (100), wherein the top two ends of the open drainage channel (100) are set as slopes and constructed into a layer of shotcrete with wire mesh (110), and Larssen steel sheet piles (200) are uniformly installed vertically on the inner wall of the open drainage channel (100) by a pile driver, characterized in that: It also includes I-beams (300) welded to Larssen sheet piles (200), and the I-beams (300) are arranged horizontally in the transverse direction; A support plate device (500) is mounted on an I-beam (300) at both ends via positioning connectors (400). The support plate device (500) provides arch support to the I-beams (300) at both ends via an arc-shaped metal plate structure. An adjusting screw (600) is installed on the support plate device (500) to adjust the arch contraction angle. The support plate device (500) includes spring steel one (510) and spring steel two (520), the length of spring steel two (520) is less than that of spring steel one (510), spring steel two (520) is fixedly installed in the middle of spring steel one (510), a through hole (511) is opened between spring steel one (510) and spring steel two (520), a positioning cylinder (530) is fixedly installed on the inner wall of the through hole (511), a semi-cylindrical ring (531) is fixedly installed on the inner wall of the positioning cylinder (530), and cylinders (540) are fixedly installed at both ends of spring steel one (510), and cylinders (540) are installed on the connecting plate (430) by bolts (700); The adjusting screw (600) includes a screw (610), and positioning holes (620) are provided at both ends of the screw (610); The support plate device (500) is configured in two or four groups.

2. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 1, characterized in that: The I-beam (300) is provided with a T-shaped through hole (310); The positioning connector (400) includes a plate body one (410), a plate body two (420) is fixedly installed on the right end of the plate body one (410) by bolts, a positioning post (411) is fixedly installed on the left end of the plate body one (410), a crossbar pin (412) is fixedly installed on the left end of the positioning post (411), the crossbar pin (412) is inserted into the inner wall of the T-shaped through hole (310) and rotated 90 degrees to enter the inner wall of the I-beam (300), and a connecting plate (430) is fixedly installed on the right end of the plate body two (420).

3. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 1, characterized in that: The support plate device (500) is configured in two sets, installed above and below the inner wall of the drainage channel (100), with the two sets of spring steel (510) facing each other in the concave direction of the arc.

4. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 3, characterized in that: After the bottom of the screw (610) passes through the positioning cylinder (530) of the lower spring steel (510), the positioning head (630) is installed. The positioning head (630) is bolted into the positioning hole (620) of the screw (610). The top of the positioning hole (620) is threaded with a nut (640). The bottom of the nut (640) contacts the top of the positioning cylinder (530) of the upper spring steel (510).

5. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 1, characterized in that: The support plate device (500) is configured in two sets, installed above and below the inner wall of the drainage channel (100), and the two sets of spring steel (510) have opposite concave arc directions.

6. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 5, characterized in that: The screw (610) is inserted into the inner wall of the positioning cylinder (530) of the two sets of spring steel (510). Nuts (640) are installed above and below the screw (610). The top of the upper nut (640) contacts the bottom of the positioning cylinder (530) of the upper spring steel (510), and the bottom of the lower nut (640) contacts the top of the positioning cylinder (530) of the lower spring steel (510).

7. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 1, characterized in that: The support plate device (500) is set in four groups, with each pair of groups installed above and below the inner wall of the drainage channel (100). The topmost group of spring steel (510) and the bottommost group of spring steel (510) have concave arc directions that correspond to each other, while the middle two groups of spring steel (510) have concave arc directions that are opposite.

8. The assembled fixing device for the construction of municipal engineering drainage open channels according to claim 7, characterized in that: The screw (610) is inserted into the inner wall of the positioning cylinder (530) of the four sets of spring steel (510). The bottom of the screw (610) passes through the positioning cylinder (530) of the lowest spring steel (510) and then the positioning head (630) is installed. The positioning head (630) is connected to the positioning hole (620) of the screw (610) by bolts. The top of the positioning hole (620) is threaded with a nut (640), and the bottom of the nut (640) contacts the top of the positioning cylinder (530) of the uppermost spring steel (510). Nuts (640) are installed above and below the screw (610). The top of the upper nut (640) contacts the bottom of the positioning cylinder (530) of the second set of spring steel (510) from top to bottom, and the bottom of the lower nut (640) contacts the top of the positioning cylinder (530) of the third set of spring steel (510) from top to bottom.

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