A municipal pipe network trench excavation supporting device
Patent Information
- Application Number
- CN202522476813.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Traditional support devices are prone to displacement or deformation of the support plates in soft or deep trenches, which cannot effectively resist soil pressure and lead to the risk of trench sidewall collapse.
A municipal pipeline trench excavation support device with double locking to prevent loosening is adopted. The multi-directional anchoring system of the reinforcement mechanism and the telescopic rod form a triangular support structure. Combined with the adjustment mechanism, the length of the support rod can be infinitely adjusted to adapt to different geological conditions. The soil interlocking is enhanced by the insertion plate and the conical end.
It effectively reduces the risk of trench collapse, enhances the overturning resistance of the support plate, reduces the procurement cost of special support equipment, and maintains stability during construction vibrations.
Smart Images
Figure CN224931085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trench support technology, and more specifically, to a support device for excavating municipal pipeline trenches. Background Technology
[0002] Excavation of municipal pipeline trenches is an important part of municipal engineering construction. During the excavation process, the trench sidewalls are prone to collapse due to soil pressure, groundwater infiltration and other factors, so support devices are needed to protect the trenches.
[0003] The existing technology has the following problems: After trench excavation, it is often necessary to install support equipment at intervals along the length of the trench to support the sidewalls of the trench, in order to reduce the probability of the sidewalls of the trench collapsing under the action of lateral forces of the soil. Traditional support devices mostly rely on a single support plate for support. In trenches with soft soil or greater depth, the support plate is prone to displacement or deformation, and cannot effectively resist soil pressure. Utility Model Content
[0004] To overcome the shortcomings of the existing technology, this utility model provides a support device for excavating municipal pipeline trenches. This device features double locking to prevent loosening due to construction vibrations, and has no easily detachable parts, effectively ensuring the safety of construction personnel and equipment within the trench.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A municipal pipeline trench excavation support device, comprising: The base plate is a horizontal load-bearing component; Support plate, which is a plate-shaped support member, is rotatably connected to one side of the top of the base plate; Mounting plate, the mounting plate is a mounting carrier component, there are two of them, and they are hinged to the rear side of the top of the support plate; The reinforcement mechanism is a soil anchoring component, which is installed inside the mounting plate; The support rod is an adjustable length support component, hinged to the middle of the front side of the support plate; The sleeve rod is a sleeved load-bearing component that is slidably connected to the outside of the support rod; An adjustment mechanism, which is a length locking component, is located on the outside of the sleeve rod; Telescopic insert rods, which are auxiliary fixing components, are two in number, hinged to the front side of the support plate and located on the left and right sides of the support rod.
[0006] The reinforcement mechanism includes a nail tube, a pressure plate, a lead screw, a lifting plate, a knob, a sliding rod, a first spring, a base plate, and a connecting rod. The nail tube is sleeved inside the mounting plate. The pressure plate is fixedly connected to the outer top of the nail tube. The lead screw is rotatably connected to the inside of the nail tube. The lifting plate is threadedly connected to the middle of the lead screw. The knob is fixedly connected to the top of the lead screw. The sliding rod is fixedly connected to the inner wall of the nail tube. The first spring is sleeved at both ends of the sliding rod. The base plate is slidably connected to the outer side of the sliding rod. The connecting rod is located between the lifting plate and the base plate.
[0007] One end of the first spring is fixedly connected to the inner wall of the nail tube, and the other end is fixedly connected to the middle of the insertion plate. The insertion plate is slidably connected to the inside of the nail tube.
[0008] One end of the connecting rod is rotatably connected to the bottom of the lifting plate, and the other end is rotatably connected to the top of the insert plate. The lifting plate is slidably connected inside the nail tube.
[0009] The adjustment mechanism includes a housing, an adjustment rod, a baffle, a second spring, a connecting plate, a mounting frame, a fixing rod, a third spring, and a U-shaped limiting rod. The housing is fixedly connected to the outer periphery of the sleeve rod, the adjustment rod is slidably connected inside the housing, the baffle is fixedly connected to one side of the adjustment rod, the second spring is sleeved on the other side of the adjustment rod, the connecting plate is fixedly connected to one end of the adjustment rod, the mounting frame is fixedly connected to the upper and lower sides of the housing, the fixing rod is fixedly connected inside the mounting frame, the third spring is sleeved on both ends of the fixing rod, and the U-shaped limiting rod is slidably connected between the outer sides of the two fixing rods.
[0010] One end of the second spring is fixedly connected to the middle of the baffle, and the other end is fixedly connected to the inner wall of the outer shell. The baffle is slidably connected to the inside of the outer shell.
[0011] The end of the adjusting rod away from the connecting plate passes through the outer shell and the sleeve rod, and is inserted into the inside of the support rod. The outer side of the support rod is provided with a socket that matches the adjusting rod along its length.
[0012] One end of the third spring is fixedly connected to the inner wall of the mounting frame, and the other end is fixedly connected to the outside of the U-shaped limiting rod. The U-shaped limiting rod is engaged with the inner side of the connecting plate and slidably connected inside the mounting frame.
[0013] The telescopic rod is a telescopic structure and is equipped with a length locking component. The end of the telescopic rod away from the support plate can be inserted into the bottom wall of the trench to assist in fixing the support plate.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The device constructs a multi-directional anchoring system through a reinforcement mechanism. A screw-driven lifting plate extends the insertion plate and inserts it into the soil on both sides of the trench. Combined with the elastic buffer and displacement compensation of the first spring, it can resist lateral soil pressure and cope with slight soil settlement, avoiding the problems of easy displacement and deformation of traditional single support plates. At the same time, the telescopic insertion rod and the support rod form a triangular support structure, further enhancing the overturning resistance of the support plate and significantly reducing the risk of trench collapse. The adjustment mechanism can achieve stepless adjustment of the support rod length through the convenient operation of "U-shaped limit rod unlocking - support rod sliding - adjustment rod locking", which can adapt to trenches of different widths and depths without replacing parts. The telescopic insertion rod supports angle positioning and length adjustment. The conical end can be directly inserted into the soil layer, and the alloy drill bit can be replaced in the rock layer to adapt to various geological conditions and reduce the procurement cost of special support equipment. The support plate fits tightly with the sidewall of the trench. The insertion plate of the reinforcement mechanism enhances the soil interlocking through barbs, and the "adjustment rod insertion + U-shaped rod snap-fit" double locking of the adjustment mechanism can prevent loosening caused by construction vibration. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a rear view of the external structure of the support plate of this utility model; Figure 3 This is a cross-sectional view of the internal structure of the nail tube of this utility model; Figure 4 This is a cross-sectional view of the internal structure of the outer shell of this utility model; Figure 5 This is an exploded view of the internal structure of the mounting frame of this utility model.
[0016] In the diagram: 1 is the base plate, 2 is the support plate, 3 is the mounting plate, 4 is the reinforcement mechanism, 41 is the nail tube, 42 is the pressure plate, 43 is the lead screw, 44 is the lifting plate, 45 is the knob, 46 is the slide rod, 47 is the first spring, 48 is the insert plate, 49 is the connecting rod, 5 is the support rod, 6 is the sleeve rod, 7 is the adjustment mechanism, 71 is the outer shell, 72 is the adjusting rod, 73 is the baffle, 74 is the second spring, 75 is the connecting plate, 76 is the mounting frame, 77 is the fixing rod, 78 is the third spring, 79 is the U-shaped limit rod, and 8 is the telescopic insert rod. Detailed Implementation
[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0019] like Figures 1 to 5 As shown, a municipal pipeline trench excavation support device includes a base plate 1, a support plate 2, an mounting plate 3, a reinforcement mechanism 4, a support rod 5, a sleeve rod 6, an adjustment mechanism 7, and a telescopic insertion rod 8. The base plate 1, as the fundamental load-bearing component of the entire device, is placed horizontally at the bottom of the trench, providing a stable support platform for the superstructure. The support plate 2 is a plate-shaped support component, connected to one side of the top of the base plate 1 via a hinge, allowing for adaptive rotation according to the inclination angle of the trench sidewall, thus tightly fitting the soil wall and effectively dispersing soil pressure. Two mounting plates 3 serve as the installation carrier components, each connected to the rear top of the support plate 2 via a rotating shaft, allowing for adjustment of the installation angle according to on-site construction conditions. The reinforcement mechanism 4, as a soil anchoring component, is built into the mounting plate 3, penetrating deep into the soil layer through mechanical interlocking, enhancing the overall pull-out resistance of the device. The support rod 5, as an adjustable-length support component, is connected to the middle of the front side of the support plate 2 via a ball joint, allowing for multi-angle adjustment of the support direction. The sleeve rod 6, serving as a supporting component, is sleeved onto the outside of the support rod 5 via a sliding groove structure, forming a telescopic support system. The adjustment mechanism 7, acting as a length locking component, is located on the outside of the sleeve rod 6 and achieves rapid fixation of the support length through a mechanical interlocking principle. Two telescopic insert rods 8 serve as auxiliary fixing components, symmetrically arranged on the left and right sides of the support rod 5 in front of the support plate 2, and are hinged together to provide auxiliary support at different angles.
[0020] Preferably, the reinforcement mechanism 4 includes a nail tube 41, a pressure plate 42, a lead screw 43, a lifting plate 44, a knob 45, a slide bar 46, a first spring 47, a base plate 48, and a connecting rod 49. The nail tube 41 is made of high-strength alloy steel and is fitted inside the mounting plate 3 with an interference fit. The pressure plate 42 is welded to the outer top of the nail tube 41, forming a pressure-bearing platform with a larger load-bearing area. The lead screw 43 is rotatably connected inside the nail tube 41 via a precision bearing, and its surface is machined with precision trapezoidal threads. The lifting plate 44 engages with the middle of the lead screw 43 via a threaded pair, converting rotational motion into linear motion. The knob 45 is fixed to the top of the lead screw 43 via a key connection, and its outer edge has anti-slip textures for easy manual operation. The slide bar 46 is welded to the inner wall of the nail tube 41 and symmetrically arranged on both sides of the lead screw 43. The first spring 47 is made of high-carbon steel wire and is fitted at both ends of the slide bar 46, providing continuous preload. The insert plate 48 is slidably connected to the outside of the slide rod 46 via a linear bearing, and its bottom is designed with sharp ground-breaking teeth. The connecting rod 49 is connected to the bottom of the lifting plate 44 and the top of the insert plate 48 via a universal joint, forming a stable force transmission mechanism.
[0021] Preferably, one end of the first spring 47 is fixedly connected to the inner wall of the nail tube 41 by welding, and the other end is fixedly connected to the middle of the insert plate 48 by a snap-fit structure. The insert plate 48 is slidably connected to the inside of the nail tube 41 by a precision guide rail, and the fit clearance is controlled within the range of 0.1-0.2mm to ensure smooth movement and avoid excessive shaking.
[0022] Preferably, one end of the connecting rod 49 is rotatably connected to the bottom of the lifting plate 44 via a needle roller bearing, and the other end is rotatably connected to the top of the insert plate 48 via a self-lubricating bearing. The lifting plate 44 is slidably connected to the inside of the nail tube 41 via four sets of linear guide rails to ensure stable movement under stress.
[0023] Preferably, the adjusting mechanism 7 includes a housing 71, an adjusting rod 72, a baffle 73, a second spring 74, a connecting plate 75, a mounting frame 76, a fixing rod 77, a third spring 78, and a U-shaped limiting rod 79. The housing 71 is formed using a casting process and is bolted to the outer periphery of the sleeve rod 6. The adjusting rod 72 is slidably connected to the inside of the housing 71 via a precision guide sleeve, and its surface is hardened to improve wear resistance. The baffle 73 is fixedly connected to one side of the adjusting rod 72 via threaded fasteners, serving as a support for the spring. The second spring 74 is made of stainless steel and is fitted onto the other side of the adjusting rod 72. The connecting plate 75 is welded to one end of the adjusting rod 72, and its inner side is machined with a groove matching the U-shaped limiting rod 79. The mounting frame 76 is riveted to the upper and lower sides of the housing 71, forming a symmetrical mounting structure. The fixing rod 77 is fixedly connected inside the mounting frame 76 and serves as a guide element. The third spring 78 is a double-twist spring and is fitted onto both ends of the fixing rod 77. The U-shaped limiting rod 79 is slidably connected between the two fixed rods 77 via a linear bearing, and its open end is designed with a guide slope.
[0024] Preferably, one end of the second spring 74 is fixedly connected to the middle of the baffle 73 by a positioning pin, and the other end is fixedly connected to the inner wall of the housing 71 by a retaining ring. The baffle 73 is slidably connected inside the housing 71.
[0025] Preferably, the end of the adjusting rod 72 away from the connecting plate 75 passes through the outer shell 71 and the sleeve rod 6 and is precisely inserted into the support rod 5. The support rod 5 has equally spaced insertion holes on its outer side along its length, and wear-resistant bushings are embedded in the insertion holes to form a clearance fit with the adjusting rod 72.
[0026] Preferably, one end of the third spring 78 is fixedly connected to the inner wall of the mounting frame 76 by welding, and the other end is fixedly connected to the outside of the U-shaped limiting rod 79 by a snap fastener. The U-shaped limiting rod 79 is engaged with the inner side of the connecting plate 75 by a trapezoidal groove.
[0027] Preferably, the telescopic rod 8 adopts a sleeve-type telescopic structure, consisting of three layers of tubing, with limiting slots between adjacent tubing. Its length locking mechanism uses a spring pin structure, allowing for quick locking within the positioning holes of each tubing section. The end of the telescopic rod 8 furthest from the support plate 2 is designed with a tapered plug, which can be inserted into the trench bottom wall using its own weight and impact force, forming a triangular support system with the support rod 5 to enhance the stability of the support plate 2.
[0028] Before construction, the integrity of all components of the municipal pipeline trench excavation support device, including the base plate 1, support plate 2, and reinforcement mechanism 4, must be checked. The engagement of the screw 43, spring elasticity, and the locking mechanism of the telescopic rod 8, as well as the condition of key components, must be inspected. At the same time, debris on the trench bottom wall must be cleared and leveled; for soft soil, anti-slip rubber mats can be laid. Then, the base plate 1 is placed horizontally at the bottom of the trench and its levelness is calibrated. The support plate 2 is manually rotated to initially contact the trench sidewall. Next, the U-shaped limit rod 79 of the adjustment mechanism 7 is pulled outwards to unlock it. After the adjustment rod 72 exits the insertion hole of the support rod 5, the length of the support rod 5 is adjusted by sliding it along the scale line until the support plate 2 is completely in contact with the sidewall. Then, the connecting plate 75 is pushed to insert the adjustment rod 72 into the corresponding insertion hole, and the U-shaped limit rod 79 is released to complete the double locking. Afterwards, the telescopic rod 8 is rotated to a 45° to 60° angle with the bottom wall and the angle is fixed by the positioning pin. The locking mechanism is loosened and the inner rod is pulled to make the conical end... Insert the drill bit into the bottom rock layer and tighten the locking mechanism to form a triangular support. Then rotate the mounting plate 3 to fit the ground, insert the nail tube 41 of the reinforcement mechanism 4 into the mounting hole and press the pressure plate 42 into the soil. Turn the knob 45 clockwise to drive the screw 43 to lower the lifting plate 44. Push the insertion plate 48 through the connecting rod 49 to extend it into the soil. Use the first spring 47 to enhance the engagement. After completion, check the fit of the support plate 2 and the locking status. Use a pry bar to gently push and test the stability. During construction, inspect the reinforcement mechanism 4 for looseness, the locking status of the adjustment mechanism 7, and the insertion depth of the telescopic insertion rod 8. Deal with any problems in time. After construction, turn the knob 45 counterclockwise to retract the insertion plate 48 and pull out the nail tube 41. Loosen the locking mechanism of the telescopic insertion rod 8 to store the inner rod. Unlock the adjustment mechanism 7 to retract the support rod 5 into the sleeve rod 6. Finally, sort and move the parts, clean and inspect them. Repair damaged parts in time and store the intact parts for future use.
[0029] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.
Claims
1. A support device for excavating municipal pipeline trenches, characterized in that: include The base plate (1) is a horizontal load-bearing component; Support plate (2), the support plate (2) is a plate-shaped support member, which is rotatably connected to one side of the top of the base plate (1); Mounting plate (3), the mounting plate (3) is a mounting carrier component, there are two of them, which are hinged to the rear side of the top of the support plate (2); The reinforcement mechanism (4) is a soil anchoring component and is installed inside the mounting plate (3); Support rod (5), the support rod (5) is a length adjustable support component, hinged to the middle of the front side of the support plate (2); Sleeve rod (6), the sleeve rod (6) is a sleeve bearing member, which is slidably connected to the outside of the support rod (5); Adjustment mechanism (7), the adjustment mechanism (7) is a length locking component, which is located on the outside of the sleeve rod (6); Telescopic rod (8), the telescopic rod (8) is an auxiliary fixing component, there are two of them, which are hinged to the front side of the support plate (2) and located on the left and right sides of the support rod (5).
2. The municipal pipeline trench excavation support device according to claim 1, characterized in that: The reinforcement mechanism (4) includes a nail tube (41), a pressure plate (42), a lead screw (43), a lifting plate (44), a knob (45), a slide rod (46), a first spring (47), a base plate (48), and a connecting rod (49). The nail tube (41) is sleeved inside the mounting plate (3). The pressure plate (42) is fixedly connected to the outer side of the top of the nail tube (41). The lead screw (43) is rotatably connected inside the nail tube (41). The lifting plate (44) is threadedly connected to the middle of the lead screw (43). The knob (45) is fixedly connected to the top of the lead screw (43). The slide rod (46) is fixedly connected to the inner wall of the nail tube (41). The first spring (47) is sleeved at both ends of the slide rod (46). The base plate (48) is slidably connected to the outer side of the slide rod (46). The connecting rod (49) is located between the lifting plate (44) and the base plate (48).
3. The municipal pipeline trench excavation support device according to claim 2, characterized in that: One end of the first spring (47) is fixedly connected to the inner wall of the nail tube (41), and the other end is fixedly connected to the middle of the insertion plate (48), which is slidably connected to the inside of the nail tube (41).
4. The municipal pipeline trench excavation support device according to claim 2, characterized in that: One end of the connecting rod (49) is rotatably connected to the bottom of the lifting plate (44), and the other end is rotatably connected to the top of the insert plate (48). The lifting plate (44) is slidably connected to the inside of the nail tube (41).
5. The municipal pipeline trench excavation support device according to claim 1, characterized in that: The adjustment mechanism (7) includes a housing (71), an adjustment rod (72), a baffle (73), a second spring (74), a connecting plate (75), a mounting frame (76), a fixing rod (77), a third spring (78), and a U-shaped limiting rod (79). The housing (71) is fixedly connected to the outer periphery of the sleeve rod (6). The adjustment rod (72) is slidably connected to the inside of the housing (71). The baffle (73) is fixedly connected to one side of the adjustment rod (72). The second spring (74) is sleeved on the other side of the adjustment rod (72). The connecting plate (75) is fixedly connected to one end of the adjustment rod (72). The mounting frame (76) is fixedly connected to the upper and lower sides of the housing (71). The fixing rod (77) is fixedly connected to the inside of the mounting frame (76). The third spring (78) is sleeved on both ends of the fixing rod (77). The U-shaped limiting rod (79) is slidably connected between the outer sides of the two fixing rods (77).
6. The municipal pipeline trench excavation support device according to claim 5, characterized in that: One end of the second spring (74) is fixedly connected to the middle of the baffle (73), and the other end is fixedly connected to the inner wall of the outer shell (71). The baffle (73) is slidably connected to the inside of the outer shell (71).
7. A municipal pipeline trench excavation support device according to claim 5, characterized in that: The end of the adjusting rod (72) away from the connecting plate (75) passes through the outer shell (71) and the sleeve rod (6) and is inserted into the support rod (5). The support rod (5) has a socket on its outer side along the length direction that is adapted to the adjusting rod (72).
8. A municipal pipeline trench excavation support device according to claim 5, characterized in that: One end of the third spring (78) is fixedly connected to the inner wall of the mounting frame (76), and the other end is fixedly connected to the outside of the U-shaped limiting rod (79). The U-shaped limiting rod (79) is engaged with the inner side of the connecting plate (75) and slidably connected inside the mounting frame (76).
9. A municipal pipeline trench excavation support device according to claim 1, characterized in that: The telescopic rod (8) is a telescopic structure and is equipped with a length locking component. The end of the telescopic rod (8) away from the support plate (2) can be inserted into the bottom wall of the trench to assist in fixing the support plate (2).