A water and electricity construction slotting device and a use method thereof

Abstract

The application discloses a water and electricity construction slotting device and a use method thereof, and relates to the field of water and electricity construction. The water and electricity construction slotting device comprises a wall surface mounting part and a ground fixing part, and the wall surface mounting part is fixed by the ground fixing part during use. Since workers need to stand on the base plate during construction, the stability of the base plate is ensured by the weight of the workers, the positioning rod is stabilized, the propeller connected with the positioning rod can exert stable thrust, the fixing ring can be stably fixed on the wall, the stability of the wall surface mounting part during construction is ensured, the cutter can be inserted into the gap between the connecting monomer and the limiting rod through the installed wall surface mounting part, and the cutter can only move along the gap, so that the cutter can cut along the slot line without looking at the slot line during cutting, the efficiency of slot line cutting is improved, and the construction period of water and electricity construction is saved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a device for trenching in hydropower construction and its usage method. Background Technology

[0002] During interior construction of buildings, water and electricity installation is a complex and crucial project, involving the installation and commissioning of water supply, drainage, and power supply facilities on the building or construction site. It is greatly affected by natural conditions, requiring work in areas with inconvenient transportation and harsh environments, and necessitating careful consideration of topography, geology, hydrology, and meteorology. The construction process includes planning water and electricity lines, marking and positioning, trenching and wiring, and strictly adhering to precautions regarding the determination of power supply locations, wiring at the power supply end, conduit and junction box connections, and junction box wiring to ensure construction safety and quality.

[0003] Currently, when cutting grooves in the wall during water and electricity construction, after the water and electricity points are located and planned, groove lines are drawn on the wall according to the plan. Then, a cutter is used to cut along the groove lines, and then a drill bit is used to cut grooves in the wall. This way, grooves for placing pipes can be obtained for water and electricity construction.

[0004] The traditional method involves drawing the groove lines and then manually cutting along them with a cutter. This process generates a lot of dust, obstructing the worker's view. The worker must wait for the dust to dissipate before proceeding to the next cut. Therefore, when cutting the groove lines, the worker can only cut little by little. The plumbing and electrical work for the entire house requires a large amount of piping and wiring, making it a massive project. Workers often need a lot of time to complete this task. Furthermore, the project involves numerous buildings, each with multiple rooms. Therefore, the current method requires a significant amount of time for wall groove cutting in plumbing and electrical work. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device and method for trenching in water and electricity construction, which addresses the shortcomings of the prior art. The device fixes the wall-mounted part by fixing the ground part, ensuring the stability of the wall-mounted part during construction. Furthermore, by installing the wall-mounted part along the trench line, cutting can be done along the trench line without having to watch the cutter being aligned with it, thereby improving the efficiency of trench cutting and saving the construction period of water and electricity construction.

[0006] To solve the above-mentioned technical problems, the present invention proposes a device for trenching in hydropower construction, including a wall mounting part and a ground fixing part; The wall-mounted part includes multiple connecting units. Each connecting unit has a fixing ring on one side of its width direction. The other side of the connecting unit is connected to a limiting rod of the same length as the connecting unit via a first detachable connector. The number of the first detachable connectors is at least three and they are evenly distributed along the length direction of the connecting units. The two ends of two adjacent connecting units along their length direction are connected via a second detachable connector. The ground fixing part includes a base plate. On one side of the upper surface of the base plate, there are multiple rows of positioning rods that are hinged end to end in sequence. The positioning rod at one end is located on the base plate. The length of the positioning rod is equal to the length of the connecting unit. The positioning rod is provided with a limiting groove for inserting the push rod. The two ends of the push rod are detachably connected to the limiting groove and the fixing ring, respectively.

[0007] Furthermore, the first detachable connector includes a first locking lever and a second locking lever; The top left side of the first locking rod is hinged to the connecting unit by a torsion spring. A first limiting block is provided on the top right side of the first locking rod. The first limiting block is fixed on the connecting unit. A groove is provided at the bottom of the first locking rod. The bottom left side of the second locking rod is hinged to the limiting rod by a torsion spring. A second limiting block is provided on the bottom right side of the second locking rod. The second limiting block is fixed on the limiting rod. A protrusion is provided on the top of the second locking rod. The protrusion can be inserted into or pulled out of the groove under the action of external force.

[0008] Furthermore, the groove opening is provided with a lubricating layer.

[0009] Furthermore, the second detachable connector includes a fixing rod fixed to one end of the connecting unit along its length and a U-shaped rod with an opening facing the connecting unit. A first pressure spring is fixed to the side of the fixing rod facing the U-shaped rod, and the first pressure spring passes through the opening of the U-shaped rod. The second detachable connector further includes a first fixing groove, a second fixing groove, and a spring retainer formed at the other end of the connecting unit along its length. The first fixing groove is used to insert the fixing rod, the second fixing groove is used to insert the U-shaped rod, and the spring retainer is detachably connected to the free end of the first pressure spring.

[0010] Furthermore, the spring retainer includes a locking groove formed at the other end of the connecting unit along its length. The locking groove is located on the same plane as the first fixing groove and the second fixing groove and has the same opening direction. The groove wall of the locking groove is provided with an internal thread. A second pressure spring is provided in the locking groove and is threadedly connected to the internal thread. The cross-sectional diameter of the second pressure spring is equal to that of the first pressure spring, and the spacing between the spring layers of the second pressure spring and the first pressure spring is equal.

[0011] Furthermore, the connecting unit is a hollow structure, and a water sprayer is installed inside the connecting unit. The water sprayer includes a water outlet, a water storage tank, and a power supply terminal. The water outlet of the water sprayer is located on the surface of the connecting unit. The two ends of the water storage tank of the water sprayer are respectively connected to both sides of the connecting unit along its length through pipes. The water storage tanks of two adjacent connecting units are interconnected, and a rubber ring is provided at the connection point. An electrical interface is provided on each side of the length direction of the connecting unit. The power supply end of the water sprayer is electrically connected to the electrical interface. The electrical interface is used to enable the power supply ends of the water sprayers in adjacent connecting units to be connected in parallel.

[0012] Furthermore, a rubber layer is provided on the bottom surface of the base plate.

[0013] Furthermore, the push rod is a telescopic rod with adjustable and limitable length.

[0014] Furthermore, one end of the telescopic rod is threaded into the limiting groove, and the other end of the telescopic rod is fixedly connected to a cone with its pointed end facing the fixing ring, and the surface of the cone is provided with a frosted layer.

[0015] Based on the above technical concept, the present invention also proposes a method for using a device for trenching in hydropower construction. Using the above-mentioned device for trenching in hydropower construction includes the following steps: Step 1: Connect multiple connecting units in a certain order and direction along the trench line of the water and electricity construction trench, so that the gap between each connecting unit and the limiting rod is projected onto the trench line of the water and electricity construction trench. Step 2: Place the base plate on the ground where the water and electricity are being constructed. The worker stands on the base plate and rotates a certain number of the positioning rods so that they are connected end to end and perpendicular to the base plate. Step 3: Insert the push rod into the limiting groove and connect the push rod to the fixing ring. Adjust the push rod to make each connecting unit in close contact with the construction wall surface. Step 4: The worker stands on the base plate and uses a cutter to cut the wall surface along the gap between each of the connecting units and the limiting rod; Step 5: Use a drill bit to create grooves in the wall.

[0016] Compared with the prior art, the present invention has the following advantages: This invention provides a device and method for trenching in hydropower construction. The device uses a ground-fixed component to secure the wall-mounted component. Since workers stand on a base plate during construction, their weight ensures the stability of the base plate, thereby stabilizing the positioning rod. This allows the pusher connected to the positioning rod to apply a stable thrust, firmly fixing the fixing ring to the wall, ensuring the stability of the wall-mounted component during construction. Furthermore, the installed wall-mounted component allows the cutter to be inserted into the gap between the connecting unit and the limiting rod, and the cutter can only move along this gap. This allows cutting along the trench line without needing to observe it, improving the efficiency of trench cutting and saving time in hydropower construction. The present invention provides a device for trenching in hydropower construction, wherein the first detachable connector has multiple and evenly distributed components in a single connector unit. Combined with the positional distribution of the limiting block, locking rod and torsion spring, even if one is in a disconnected state when the cutter moves, the other two remain in a closed state. This ensures that the limiting rod will not fall off no matter how the cutter moves, effectively and stably limiting the cutter's cutting, allowing straight cutting along the trench line to be completed without having to look at the cutter. The present invention provides a device for trenching in hydropower construction. A water sprayer is installed on the connecting unit. The water sprayer sprays water mist, which can effectively neutralize and dissipate the dust generated during cutting. This allows workers to quickly see the construction site after cutting is completed, and then reuse the device of the present invention to carry out construction at the next construction site, thereby improving construction efficiency.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the connection unit of the wall installation part of the device for trenching in water and electricity construction provided by the present invention.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the connection structure between two adjacent connecting units in this invention.

[0021] Figure 4 This is a schematic diagram of the wall-mounted portion of the present invention installed on a wall.

[0022] Figure 5 This is a side view of the structure of the ground-fixed part of the device for trenching in hydropower construction provided by the present invention.

[0023] Figure 6 This is a top view of the structure of the ground-fixed part of the device for trenching in hydropower construction provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the connection structure between the wall-mounted part and the ground-fixed part of the present invention.

[0025] Explanation of reference numerals in the attached figures: 1. First pressure spring; 2. U-shaped rod; 3. Fixing rod; 4. Fixing ring; 5. Connecting unit; 6. Electrical interface; 7. First fixing groove; 8. Second fixing groove; 9. Second pressure spring; 10. Locking groove; 11. Water outlet; 12. Limiting rod; 13. First locking rod; 14. Protrusion; 15. Second locking rod; 16. Groove; 17. Torsion spring; 18. Base plate; 19. Rubber layer; 20. Positioning rod; 21. Limiting groove; 22. Push rod. Detailed Implementation

[0026] Example 1 like Figure 1-7 As shown, the present invention provides a device for trenching in hydropower construction, including a wall mounting part and a ground fixing part; The wall-mounted component includes multiple connecting units 5, such as... Figure 1 As shown, a fixing ring 4 is provided on one side of the width direction of each of the connecting units 5, and a limiting rod 12 of the same length as the connecting unit 5 is connected to the other side of the width direction of the connecting unit 5 through a first detachable connector. The number of the first detachable connectors is at least three and they are evenly distributed in the length direction of the connecting unit 5. The two ends of two adjacent connecting units 5 in the length direction are connected by a second detachable connector. The ground-fixing part includes a base plate 18, such as Figure 5-6 As shown, a series of positioning rods 20 are sequentially hinged together on one side of the upper surface of the base plate 18. The positioning rod 20 located at one end is located on the base plate 18. The length of the positioning rod 20 is equal to the length of the connecting unit 5. The positioning rod 20 is provided with a limiting groove 21 for inserting the push rod 22. The two ends of the push rod 22 are detachably connected to the limiting groove 21 and the fixing ring 4, respectively.

[0027] During construction, the individual connecting units (5 units in total) can be pre-assembled into a long string by sequentially connecting them end-to-end using the second detachable connector, such as... Figure 3As shown, to facilitate subsequent operations, place the assembled connecting unit 5 near the trench line according to the trench line cut for water and electricity construction, such as... Figure 4 As shown, the groove line is Figure 4 In the dotted line section, the gap between the connecting unit 5 and the limiting rod 12 in this invention is aligned with the groove line. Then, the construction worker places the base plate 18 on the ground near the groove line, as shown in the figure. Figure 7 As shown, the worker stands on the base plate 18, using their own weight to fix the base plate 18 to the ground. Then, they select an appropriate positioning rod 20 and rotate it so that its vertical height is equal to the height of the groove line. At this time, they use the push rod 22 to fix the fixing ring 4 of the connecting unit 5. This way, the connecting unit 5 can be fixed to the wall. Due to the worker's own weight, the position of the connecting unit 5 will not change during construction. When fixing the connecting unit 5 with the pusher, both ends of the connected unit 5 after splicing can be fixed, and each one can be fixed. However, during construction, under normal circumstances, the worker will fix both ends of the connected unit 5 after splicing.

[0028] At this point, after the device provided by the present invention is installed, the groove line can be cut. The cutter is inserted into any gap between the connecting unit 5 and the limiting rod 12. Since there is a connection between the connecting unit 5 and the limiting rod 12, when the cutter moves in the gap, if the worker holds the cutter and it deviates from the gap, there will be a sense of the limited movement trajectory. The worker only needs to adjust the position according to the sense of the hand. Therefore, when the worker is working, the cutter is inserted into any gap between the connecting unit 5 and the limiting rod 12, and then moved along the gap. When moving, the worker only needs to adjust the position according to the sense of the hand. Since there are at least three first detachable connectors and they are evenly distributed in the length direction of the connecting unit 5, the cutter can move freely when cutting, and the connecting unit 5 and the limiting rod 12 are always connected.

[0029] Meanwhile, the number of first detachable connectors in this invention is at least three. Of course, the more the better, because during construction, some workers have greater hand strength. When the cutter moves, the first detachable connector that is kept in a closed state will generate a greater connecting force, thereby ensuring the relative stability of the position between the connecting unit 5 and the limiting rod 12.

[0030] Therefore, based on the above-mentioned technical concept, the present invention also proposes a method for using a device for trenching in hydropower construction, characterized in that using the above-mentioned device for trenching in hydropower construction includes the following steps: Step 1: Connect multiple connecting units 5 in a certain order and direction along the trench line of the water and electricity construction trench, so that the gap between each connecting unit 5 and the limiting rod 12 after connection is projected onto the trench line of the water and electricity construction trench. Step 2: Place the base plate 18 on the ground where the water and electricity are being constructed. The worker stands on the base plate 18 and rotates a certain number of the positioning rods 20 so that they are connected end to end and perpendicular to the base plate 18. Step 3: Insert the push rod 22 into the limiting groove 21 and connect the push rod 22 to the fixing ring 4. Adjust the push rod 22 to make each connecting unit 5 in close contact with the construction wall surface. Step 4: The worker stands on the base plate 18 and uses a cutter to cut the wall surface along the gap between each of the connecting units 5 and the limiting rod 12; Step 5: Use a drill bit to create grooves in the wall.

[0031] Example 2 To further optimize the trenching device for hydropower construction provided in Embodiment 1, the present invention further defines the specific structure of the first detachable connector. For example... Figure 2 As shown, the first detachable connector includes a first locking rod 13 and a second locking rod 15; The top left side of the first locking rod 13 is hinged to the connecting unit 5 by a torsion spring 17. A first limiting block is provided on the top right side of the first locking rod 13. The first limiting block is fixed on the connecting unit 5. A groove 16 is provided at the bottom of the first locking rod 13. The bottom left side of the second locking rod 15 is hinged to the limiting rod 12 by a torsion spring 17. A second limiting block is provided on the right side of the bottom of the second locking rod 15. The second limiting block is fixed on the limiting rod 12. A protrusion 14 is provided on the top of the second locking rod 15. The protrusion 14 can be inserted into or pulled out of the groove 16 under the action of external force.

[0032] Preferably, the groove 16 has a lubricating layer at its opening. A thin magnet can also be provided on the groove surface of the groove 16 and the convex surface of the protrusion 14, respectively, and the two magnets attract each other. This allows the groove 16 and the protrusion 14 to quickly engage during movement, increasing the stability of the connection between the first locking rod 13 and the second locking rod 15 when the first detachable connector is closed.

[0033] The first detachable connector of the present invention has the function of opening under the action of external force and automatically closing after the external force is removed. This ensures that when the cutter moves, in order to ensure smooth movement, even if one of the first detachable connectors is opened, both first detachable connectors remain closed, so that the connecting unit 5 and the limiting rod 12 always maintain a connection relationship. When the cutter moves, when the cutter touches the first detachable connector and is about to pass through the first detachable connector, under the pushing force of the cutter, the end faces of the first locking rod 13 and the second locking rod 15 that meet separate, and the cutter passes through. Then, under the action of the torsion spring 17, the first locking rod 13 and the second locking rod 15 are reset. The limiting block is to prevent the first locking rod 13 and the second locking rod 15 from rotating to a larger angle, so as to facilitate the rapid engagement of the protrusion 14 and the groove 16, and complete the splicing and locking of the first locking rod 13 and the second locking rod 15.

[0034] In this invention, in order to improve the stability of the first locking rod 13 and the second locking rod 15 after splicing, magnets with opposite polarities can be provided on the surfaces of the protrusion 14 and the groove 16 respectively, and the magnetic force does not need to be particularly large.

[0035] Therefore, the first detachable connector of the present invention has multiple and evenly distributed components in a single connector 5. Combined with the positional distribution of the limiting block, locking rod and torsion spring, even if one is in a disconnected state when the cutter moves, the other two are still in a closed state. This ensures that the limiting rod will not fall off no matter how the cutter moves, effectively and stably limiting the cutter's cutting, so that straight cutting along the groove can be completed without looking at the cutter.

[0036] Example 3 Further optimization of the trenching device for hydropower construction provided in Embodiment 1, the present invention further defines the specific structure of the second detachable connector. The second detachable connector includes a fixing rod 3 fixed to one end of the connecting unit 5 along its length and a U-shaped rod 2 with an opening facing the connecting unit 5. A first pressure spring 1 is fixed to the side of the fixing rod 3 facing the U-shaped rod 2, and the first pressure spring 1 passes through the opening of the U-shaped rod 2. The second detachable connector further includes a first fixing groove 7, a second fixing groove 8 and a spring retainer formed at the other end of the connecting unit 5 along its length. The first fixing groove 7 is used to insert the fixing rod 3, the second fixing groove 8 is used to insert the U-shaped rod 2, and the spring retainer is detachably connected to the free end of the first pressure spring 1.

[0037] Preferably, the spring retainer includes a locking groove 10 formed at the other end of the connecting unit 5 along its length. The locking groove 10 is located on the same plane as the first fixing groove 7 and the second fixing groove 8 and has the same opening direction. The groove wall of the locking groove 10 is provided with an internal thread. A second pressure spring 9 is provided in the locking groove 10 and is threadedly connected to the internal thread. The cross-sectional diameter of the second pressure spring 9 is equal to that of the first pressure spring 1, and the spacing between the spring layers of the second pressure spring 9 and the first pressure spring 1 is equal.

[0038] The second detachable connector of the present invention is used to connect two adjacent connecting units 5, such as... Figure 3 As shown, when two adjacent connecting units 5 are connected, the first fixing groove 7 is used to insert the fixing rod 3, and the second fixing groove 8 is used to insert the U-shaped rod 2. The first pressure spring 1 is pulled out, and the first pressure spring 1 and the second pressure spring 9 are wrapped together to achieve the effect of connecting the first pressure spring 1 and the second pressure spring 9. When the first pressure spring 1 and the second pressure spring 9 are wrapped together, the second pressure spring 9 is aligned with the first pressure spring 1, and the second pressure spring 9 is rotated so that the second pressure spring 9 is embedded in the first pressure spring 1. Adjusting the length of the spring after cutting in allows the two connecting units 5 to be connected tightly. This invention uses springs, namely the first pressure spring 1 and the second pressure spring 9, so that when the two connecting units 5 are connected, the tension of the spring increases the tightness between them, ensuring that the connecting units 5 will not break when connected.

[0039] Example 4 The device for trenching in hydropower construction provided in Example 1 is further optimized. To minimize air pollution during construction and allow workers to proceed to the next construction operation as quickly as possible, and to reduce dust generated during construction, the connecting unit 5 in this invention has a hollow structure. A water sprayer is installed inside the connecting unit 5. The water sprayer includes a water outlet 11, a water tank, and a power supply terminal. The water outlet 11 of the water sprayer is located on the surface of the connecting unit 5, such as... Figure 1 As shown, the water tank of the sprayer is connected to both sides of the connecting unit 5 along its length via pipes. The water tanks of two adjacent connecting units 5 are interconnected and a rubber ring is provided at the connection point. An electrical interface 6 is provided on each side of the length direction of the connecting unit 5. The power supply end of the water sprayer is electrically connected to the electrical interface 6. The electrical interface 6 is used to enable the power supply ends of the water sprayers in adjacent connecting units 5 to be connected in parallel.

[0040] During construction, the connection point of the water storage tank at one end of the connected unit 5 is sealed, and the water source is connected at the other end, so that the water storage tanks of the sprayers in each connected unit 5 always have water.

[0041] In this invention, the electrical interface 6 includes a positive interface and a negative interface. During construction, the positive and negative interfaces of one end of the electrical interface 6 of the connected unit 5 are connected to the power supply, while the other end is left unattended. This allows the water sprayers in each connected unit 5 to be in parallel.

[0042] In this invention, the water sprayer in the connecting unit 5 is a water sprayer that can generate a spray after being powered on.

[0043] The present invention incorporates a water sprayer on the connecting unit. The water sprayer can effectively neutralize and dissipate the dust generated during cutting, allowing workers to quickly see the construction site after cutting is completed. This enables the device of the present invention to be reused for the next construction site, thereby improving construction efficiency.

[0044] Meanwhile, to ensure a more secure fixation of the connecting unit 5 to the wall during construction, in this invention, a rubber layer 19 is provided on the bottom surface of the base plate 18, such as... Figure 5 As shown, this allows the base plate 18 to be firmly placed on the ground, increasing the friction between the base plate 18 and the ground, and preventing the base plate 18 from moving during construction.

[0045] Example 5 Further optimization of the trenching device for hydropower construction provided in Example 1 is carried out in this invention, such as... Figure 7 As shown, the push rod 22 is a telescopic rod with adjustable and limitable length.

[0046] As a preferred technical solution, one end of the telescopic rod is threaded into the limiting groove 21, and the other end of the telescopic rod is fixedly connected to a cone with its pointed end facing the fixing ring 4, and the surface of the cone is provided with a frosted layer.

[0047] In this invention, the adjustable length of the pusher allows for a more secure fixation of the connecting unit 5 to the wall. A cone is used because it cannot pass through the fixing ring 4, and the circular cross-section of the cone ensures that the fixing ring 4 is evenly stressed. The inner ring of the fixing ring needs to be a complete circle so that the cone pushes against the fixing ring 4, thus pressing the connecting unit 5 firmly against the wall. The frosted layer increases friction, further enhancing the stability between the cone and the fixing ring 4 when the cone pushes against it, resulting in a more secure fixation of the connecting unit 5 to the wall.

[0048] In summary, embodiments 1-5 of the present invention provide a device and method for trenching in hydropower construction. The device fixes the wall-mounted portion to the ground. Since workers need to stand on the base plate during construction, their own weight ensures the stability of the base plate, thereby stabilizing the positioning rod. This allows the pusher connected to the positioning rod to apply a stable thrust, firmly fixing the fixing ring to the wall, thus ensuring the stability of the wall-mounted portion during construction. Furthermore, through the installed wall-mounted portion, the cutter is inserted into the gap between the connecting unit and the limiting rod, and the cutter can only move along this gap. This allows cutting along the trench line without needing to observe it, improving the efficiency of trench cutting and saving time in hydropower construction.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for trenching in hydropower construction, characterized in that, Includes wall-mounted components and floor-mounted components; The wall mounting part includes multiple connecting units (5). Each connecting unit (5) has a fixing ring (4) on one side of its width direction. The other side of the connecting unit (5) is connected to a limiting rod (12) of the same length as the connecting unit (5) by a first detachable connector. The number of the first detachable connectors is at least three and they are evenly distributed in the length direction of the connecting unit (5). The two ends of two adjacent connecting units (5) in the length direction are connected by a second detachable connector. The ground fixing part includes a base plate (18). On one side of the upper surface of the base plate (18), there are multiple rows of positioning rods (20) that are hinged end to end in sequence. The positioning rod (20) at one end is set on the base plate (18). The length of the positioning rod (20) is equal to the length of the connecting unit (5). The positioning rod (20) is provided with a limiting groove (21) for inserting the push rod (22). The two ends of the push rod (22) are detachably connected to the limiting groove (21) and the fixing ring (4), respectively.

2. The device for trenching in hydropower construction according to claim 1, characterized in that, The first detachable connector includes a first locking rod (13) and a second locking rod (15); The top left side of the first locking rod (13) is hinged to the connecting unit (5) by a torsion spring (17). A first limiting block is provided on the top right side of the first locking rod (13). The first limiting block is fixed on the connecting unit (5). A groove (16) is provided at the bottom of the first locking rod (13). The bottom left side of the second locking rod (15) is hinged to the limiting rod (12) by a torsion spring (17). A second limiting block is provided on the bottom right side of the second locking rod (15). The second limiting block is fixed on the limiting rod (12). A protrusion (14) is provided on the top of the second locking rod (15). The protrusion (14) can be inserted into or pulled out of the groove (16) under the action of external force.

3. The device for trenching in hydropower construction according to claim 2, characterized in that, The groove (16) is provided with a lubricating layer.

4. The device for trenching in hydropower construction according to claim 1, characterized in that, The second detachable connector includes a fixing rod (3) fixed at one end of the connecting unit (5) along its length and a U-shaped rod (2) with an opening facing the connecting unit (5). A first pressure spring (1) is fixed to the side of the fixing rod (3) facing the U-shaped rod (2), and the first pressure spring (1) passes through the opening of the U-shaped rod (2). The second detachable connector also includes a first fixing groove (7), a second fixing groove (8) and a spring retainer at the other end of the connecting unit (5) along its length. The first fixing groove (7) is used to insert the fixing rod (3), the second fixing groove (8) is used to insert the U-shaped rod (2), and the spring retainer is detachably connected to the free end of the first pressure spring (1).

5. A device for trenching in hydropower construction according to claim 4, characterized in that, The spring retainer includes a locking groove (10) formed at the other end of the connecting unit (5) along its length. The locking groove (10) is located on the same plane as the first fixing groove (7) and the second fixing groove (8) and has the same opening direction. The locking groove (10) has an internal thread on its groove wall. A second pressure spring (9) is provided in the locking groove (10) and is threadedly connected to the internal thread. The second pressure spring (9) has the same cross-sectional diameter as the first pressure spring (1) and the spring layers of the second pressure spring (9) and the first pressure spring (1) have the same spacing.

6. A device for trenching in hydropower construction according to claim 1, characterized in that, The connecting unit (5) is a hollow structure. A water sprayer is installed inside the connecting unit (5). The water sprayer includes a water outlet (11), a water storage tank, and a power supply terminal. The water outlet (11) of the water sprayer is located on the surface of the connecting unit (5). The two ends of the water storage tank of the water sprayer are respectively connected to the two sides of the length direction of the connecting unit (5) through pipes. The water storage tanks of two adjacent connecting units (5) are interconnected and a rubber ring is provided at the connection point. An electrical interface (6) is provided on each side of the length direction of the connecting unit (5). The power supply end of the water sprayer is electrically connected to the electrical interface (6). The electrical interface (6) is used to enable the power supply ends of the water sprayers in adjacent connecting units (5) to be connected in parallel.

7. A device for trenching in hydropower construction according to claim 1, characterized in that, The bottom surface of the base plate (18) is provided with a rubber layer (19).

8. A device for trenching in hydropower construction according to claim 1, characterized in that, The push rod (22) is a telescopic rod with adjustable and limitable length.

9. A device for trenching in hydropower construction according to claim 8, characterized in that, One end of the telescopic rod is threaded into the limiting groove (21), and the other end of the telescopic rod is fixedly connected to a cone with its pointed end facing the fixing ring (4). The surface of the cone is provided with a frosted layer.

10. A method of using a device for trenching in hydropower construction, characterized in that, Using the device for trenching in hydropower construction as described in any one of claims 1-9 includes the following steps: Step 1: Connect multiple connecting units (5) in a certain order and direction along the trench line of the hydropower construction trench, so that the gap between each connecting unit (5) and the limiting rod (12) after connection is projected onto the trench line of the hydropower construction trench. Step 2: Place the base plate (18) on the ground where the water and electricity are being constructed. The worker stands on the base plate (18) and rotates a certain number of the positioning rods (20) so that they are connected end to end and perpendicular to the base plate (18). Step 3: Insert the push rod (22) into the limiting groove (21) and connect the push rod (22) to the fixing ring (4). Adjust the push rod (22) to make each connecting unit (5) in close contact with the construction wall surface. Step 4: The worker stands on the base plate (18) and uses a cutter to cut the wall along the gap between each of the connecting units (5) and the limiting rod (12); Step 5: Use a drill bit to create grooves in the wall.

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