Urban road groove backfilling construction equipment

Abstract

The invention discloses urban road groove backfilling construction equipment, and relates to the technical field of groove backfilling construction. The pipeline is arranged in the center of the bottom of the groove; the two sets of supporting plates are arranged in the trending direction of the groove, and each set of supporting plates comprises two supporting plates which are symmetrically distributed relative to the pipeline and fixedly connected with the outer side of the pipeline; the four lifting moving devices are distributed in a square shape and fixed to the two sides of the groove. The two limiting devices are symmetrically distributed about the pipeline, and the two ends of the tops of the limiting devices are fixedly connected with the lifting moving devices on the same side; the fixing device is fixed at the top of the lifting moving device; the two positioning devices are symmetrically distributed about the pipeline and arranged between the limiting devices, and the tops of the positioning devices are fixedly connected with the fixing device; the problem that an overhead structure is easily formed in the included angle area at the bottom of a pipeline in a traditional technology is effectively solved, the compactness and uniformity of filler are remarkably improved, the backfill quality defect rate is reduced through multi-system cooperation, and the construction efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of trench backfilling construction, and more specifically, to an urban road trench backfilling construction device. Background Art

[0002] With the acceleration of the urbanization process, the scale of underground pipe network construction has been continuously expanding. As a key link in road construction, the quality of pipe trench backfilling directly affects the service life of the road and the operation safety of the pipeline. Traditional backfilling construction mostly adopts the methods of layered compaction or mechanical rolling. However, due to the single function of the equipment and the limitations of the technology, the degree of fit between the backfill material and the pipeline is often insufficient, especially at the angle between the bottom of the pipeline and the trench, resulting in void defects and subsequent settlement risks. In addition, during the compaction process, the under-compaction phenomenon often occurs at the pipe bottom angle due to the attenuation of the compaction energy transfer, becoming a weak structural link. In other parts of the trench, due to the uneven distribution of the backfill material during the overall backfilling process, the compactness is lacking during the compaction process, affecting the overall structural stability. Therefore, it is necessary to provide an urban road trench backfilling construction device to solve the problems raised in the above background art. Summary of the Invention

[0003] To achieve the above object, the present invention provides the following technical solution: An urban road trench backfilling construction device, comprising: a trench; a pipeline disposed at the center of the bottom of the trench; two groups of support plates arranged along the trench direction, with two plates symmetrically distributed about the pipeline in each group and fixedly connected to the outer side of the pipeline; four lifting and moving devices distributed in a square shape and fixed on both sides of the trench; two groups of limiting devices symmetrically distributed about the pipeline, with the two ends of the top thereof fixedly connected to the lifting and moving devices on the same side; a fixing device fixed on the top of the lifting and moving devices; two groups of positioning devices symmetrically distributed about the pipeline, disposed between the limiting devices, and the top thereof is fixedly connected to the fixing device; the limiting device includes: a fixing plate, with the two ends of the top fixedly connected to the two lifting and moving devices on the same side; two groups of rotation connection components symmetrically distributed and fixed at the two ends of the bottom of the fixing plate; a limiting plate disposed below the fixing plate, rotatably connected to the fixing plate and connected to the rotation connection components, and a horizontally arranged electromagnet is provided inside the limiting plate; the positioning device includes: a winding box body fixed to the bottom of the fixing device through a telescopic shaft body; a pressing plate assembly, with one end wound in the winding box body and the other end hanging downward and located at the side of the pipeline, and the pressing plate assembly can only rotate in one direction.

[0004] Preferably, the support plate is provided with a telescopic runner, the telescopic runner is composed of a pushing shaft and a rotating wheel, and the rotating wheel is pushed out from the side wall of the support plate by the pushing shaft, and the position of the telescopic runner in the support plate is higher than the position of the central axis of the pipeline.

[0005] Preferably, the lifting and moving device includes: a lifting column fixed to the side of the trench; a moving slide table movably arranged up and down on the lifting column, and the setting direction of the moving slide table is perpendicular to the setting direction of the pipeline; a moving clamping block slidably arranged on the moving slide table and fixedly connected to one end of the top of the limiting device.

[0006] Preferably, the rotating connection assembly includes: an extension piece fixed to one end of the bottom of the fixing plate; a rotating disc rotatably arranged outside the extension piece; a square slider arranged inside the extension piece, fixedly connected to the rotating disc and connected to the side of the limiting plate.

[0007] Preferably, the limiting plate includes: two symmetrically distributed chutes fixed to both ends of the limiting plate and slidably connected to the square slider; a driving screw rotatably arranged in the chute and threadedly connected to the square slider.

[0008] Preferably, the fixing device includes: a top plate fixed to the top of the lifting and moving device; a cylinder fixed to the center of the top of the top plate, and its internal shaft passes through the top plate downward; a downward pressing arc plate fixed to the internal shaft of the cylinder at the top and corresponding to the top of the pipeline at the bottom.

[0009] Preferably, the pressing plate assembly includes: a packing plate arranged at one end where the pressing plate assembly is vertically placed, and a packing port is arranged on the packing plate; a plurality of compaction plates which together with the packing plate form the plane of the pressing plate assembly; connecting pieces respectively fixed to both ends of the packing plate and the compaction plates; a rotating shaft connecting two adjacent connecting pieces.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the guiding system composed of the supporting plate and the telescopic runner, and in cooperation with the pressing plate assembly driven by the electromagnet in the limiting device, the present invention forms precise filling control of the bottom included angle area of the pipeline, effectively solving the problem that an overhead structure is easily formed in this area in the traditional process; by using the limiting plate driven by the lifting and moving device and the rotating connection assembly in cooperation, the backfilling space is gradually compressed and dynamically compacted, enabling the filler to form a two-way extrusion effect in the horizontal and vertical directions, significantly improving the uniformity of the compactness; through the rigid constraint of the downward pressing arc plate on the pipeline, the displacement of the pipe body during backfilling is avoided, ensuring the structural stability; through the design of the unidirectionally rotating pressing plate assembly and the packing port, not only the precise control of the filler injection is realized, but also the automatic leveling of the compaction surface is achieved through the deflection of the plate; through the cooperation of multiple systems, the backfilling quality defect rate of this equipment is reduced, effectively improving the construction efficiency. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the overall structure of a trench backfilling construction equipment for urban roads; Figure 2It is a schematic structural diagram of the backfilling preparation stage in the present invention; Figure 3 It is a schematic construction diagram of the lower part backfilling of the trench in the present invention; Figure 4 It is a schematic construction diagram of the upper part backfilling of the trench in the present invention; Figure 5 is Figure 4 The enlarged structural diagram at point A in Figure 6 It is a schematic structural diagram of the rotating connection assembly and the limiting plate in the present invention; Figure 7 It is a schematic structural diagram of the pressing plate assembly in the present invention; In the figure: 1, trench; 2, pipeline; 3, support plate; 4, lifting and moving device; 5, limiting device; 6, fixing device; 7, positioning device; 31, telescopic runner; 41, lifting column; 42, moving slide; 43, moving clamping block; 51, fixing plate; 52, rotating connection assembly; 53, limiting plate; 61, top plate; 62, cylinder; 63, downward pressing arc plate; 71, winding box body; 72, telescopic shaft body; 73, pressing plate assembly; 521, extension piece; 522, rotating disc; 523, square slider; 531, chute; 532, driving screw; 731, filling plate; 732, compaction plate; 733, connecting piece; 734, rotating shaft; 7311, filling port. Detailed implementation manners

[0012] Please refer to Figures 1 to 7 , in the embodiment of the present invention, a construction equipment for backfilling urban road trenches includes: a trench 1; a pipeline 2 arranged at the center of the bottom of the trench 1; two groups of support plates 3 arranged along the direction of the trench 1, with two pieces symmetrically distributed about the pipeline 2 in each group and fixedly connected to the outer side of the pipeline 2; four lifting and moving devices 4 arranged in a square distribution and fixed on both sides of the trench 1; two groups of limiting devices 5 symmetrically distributed about the pipeline 2, with both ends of the top thereof fixedly connected to the lifting and moving devices 4 on the same side; a fixing device 6 fixed on the top of the lifting and moving devices 4; two groups of positioning devices 7 symmetrically distributed about the pipeline 2, arranged between the limiting devices 5, and the top is fixedly connected to the fixing device 6.

[0013] In this embodiment, the support plate 3 is provided with a telescopic runner 31, and the telescopic runner 31 is composed of a pushing shaft and a rotating wheel. The rotating wheel is pushed out from the side wall of the support plate 3 by the pushing shaft, and the position of the telescopic runner 31 in the support plate 3 is higher than the position of the central axis of the pipeline 2.

[0014] That is to say, when backfilling the lower part of the trench 1, that is, backfilling the part below the central axis of the pipeline 2, the rotating wheel is pushed out from the side wall of the support plate 3 through the push shaft to guide and limit the positioning device 7, so that the positioning device 7 and the limiting device 5 divide the space between the trench 1 and the pipeline 2, and by gradually moving the limiting device 5 to both sides, the lower part of the trench 1 is gradually backfilled, which helps to promote the tight filling of the filler in the bottom angle area of the pipeline 2 and the lower part of the trench 1, and the backfilling is more uniform.

[0015] In this embodiment, the lifting and moving device 4 includes: a lifting column 41 fixed to the side of the trench 1; a moving slide 42 arranged to move up and down on the lifting column 41, and the arrangement direction of the moving slide 42 is perpendicular to the arrangement direction of the pipeline 2; a moving clamping block 43 slidably arranged on the moving slide 42 and fixedly connected to one end of the top of the limiting device 5.

[0016] That is to say, under the action of the lifting column 41, the moving slide 42 is driven to move up and down, and the limiting device 5 is driven to move up and down through the moving clamping block 43. When the moving clamping block 43 slides on the moving slide 42, the limiting device 5 is driven to move in the trench 1 to gradually backfill the lower part of the trench 1.

[0017] In this embodiment, the limiting device 5 includes: a fixing plate 51, the two ends of the top are respectively fixed on the two lifting and moving devices 4 on the same side; two groups of rotation connection components 52 are symmetrically distributed and fixed at the two ends of the bottom of the fixing plate 51; a limiting plate 53 is arranged below the fixing plate 51, rotatably connected to the fixing plate 51, connected to the rotation connection components 52, and a horizontally arranged electromagnet is arranged inside the limiting plate 53.

[0018] That is to say, when backfilling the lower part of the trench 1, the lifting column 41 drives the limiting device 5 to move downward in the trench 1, so that the limiting plate 53 slides downward along the inner walls of the two end support plates 3 until it fits with the bottom of the trench 1. Then, the moving slide 42 drives the whole limiting device 5 to move in the trench 1 to adjust the distance between the limiting plate 53 and the pipeline 2. The electromagnet inside the limiting plate 53 is connected to the positioning device 7 bypassing the telescopic runner 31. While adjusting the distance between the limiting plate 53 and the pipeline 2, the space between the pipeline 2 and the limiting plate 53 is closed by the positioning device 7, and the backfilling work is carried out. During the continuous backfilling work, the limiting plate 53 gradually moves away from the pipeline 2 until the limiting plate 53 fits with the side wall of the trench 1. Then, the limiting plate 53 is disengaged from the positioning device 7 and is driven upward by the lifting column 41 to move out of the lower part of the trench 1. Then, under the restriction of the positioning device 7, the backfilling work of the lower part of the trench 1 is completed. By gradually moving, the backfilling material is fully fitted with the included angle area at the bottom of the pipeline 2, and the backfilling materials are mutually extruded, effectively reducing the generation of void defects and effectively avoiding the settlement risk. When backfilling the upper part of the trench 1, the limiting plate 53 rotates to a horizontal state on the fixed plate 51 through the rotating connection assembly 52, that is, the limiting plate 53 is perpendicular to the fixed plate 51. Driven by the lifting column 41, the limiting plate 53 fits with the top of the trench 1. Through the combined action of the limiting plates 53 in the two side limiting devices 5, the top of the trench 1 is covered, and the backfilling work is carried out in cooperation with the filling mechanism.

[0019] In this embodiment, the rotating connection assembly 52 includes: an extension piece 521 fixed to one end of the bottom of the fixed plate 51; a rotating disc 522 rotatably arranged outside the extension piece 521; a square slider 523 arranged inside the extension piece 521, fixedly connected to the rotating disc 522 and connected to the side of the limiting plate 53.

[0020] That is to say, by driving the rotating disc 522 to rotate on the extension piece 521, and then driving the limiting plate 53 to rotate at the bottom of the fixed plate 51 through the square slider 523 to adapt to the backfilling work of different areas of the trench 1. It should be noted that the rotating disc 522 can be driven manually or a micro motor can be arranged at both ends of the fixed plate 51 to directly drive the rotating disc 522.

[0021] In this embodiment, the limiting plate 53 includes: two symmetrically distributed sliding grooves 531 fixed at both ends of the limiting plate 53 and slidably connected to the square slider 523; a driving screw 532 rotatably arranged in the sliding groove 531 and threadedly connected to the square slider 523.

[0022] That is to say, when the driving rotating disk 522 rotates on the extension piece 521, the square slider 523 is restricted by the chute 531. Then, the limiting plate 53 is driven by the square slider 523 to rotate at the bottom of the fixing plate 51. When the limiting plate 53 rotates to a position perpendicular to the fixing plate 51, the driving screw 532 rotates on the square slider 523. Since the square slider 523 is restricted by the rotating disk 522 and is in a fixed position, under the continuous rotation of the driving screw 532, the limiting plate 53 is driven to move on the square slider 523, that is, the limiting plate 53 moves in the horizontal direction to adjust the coverage range of the top of the trench 1. When backfilling the upper part of the trench 1, the limiting plate 53 moves from both sides of the trench 1 towards the position of the middle pipeline 2. As the filling material is injected, it moves gradually until the two limiting plates 53 are in contact with each other to close and compact the trench 1.

[0023] In this embodiment, the fixing device 6 includes: a top plate 61 fixed to the top of the lifting and moving device 4; a cylinder 62 fixed at the center of the top of the top plate 61, and its internal shaft passes downward through the top plate 61; a downward pressing arc plate 63, with the top fixed on the internal shaft of the cylinder 62 and the bottom corresponding to the top of the pipeline 2.

[0024] That is to say, when backfilling the lower part of the trench 1, the cylinder 62 is pushed to move the downward pressing arc plate 63 downward so that the downward pressing arc plate 63 fits with the pipeline 2 to fix the position of the pipeline 2, preventing the pipeline 2 from being displaced under pressure when backfilling the area between the pipeline 2 and the bottom of the trench 1, which affects the integrity of the backfilling; when backfilling the upper part of the trench 1, the cylinder 62 drives the downward pressing arc plate 63 to move upward and reset, away from the top horizontal plane of the trench 1.

[0025] In this embodiment, the positioning device 7 includes: a winding box body 71 fixed to the bottom of the fixing device 6 through a telescopic shaft body 72; a pressing plate assembly 73, with one end wound in the winding box body 71 and the other end hanging downward, located at the side of the pipeline 2, and the pressing plate assembly 73 can only rotate unidirectionally.

[0026] That is to say, in the preparation stage before backfilling the lower part of the trench 1, the winding box body 71 releases the pressing plate assembly 73 so that the pressing plate assembly 73 bypasses the bottom of the telescopic runner 31 and is connected to the electromagnet on the limiting plate 53. Under the pulling action of the limiting plate 53 and the downward movement of the winding box body 71, the pressing plate assembly 73 is jointly driven to close the lower part of the trench 1 and complete the backfilling work.

[0027] In this embodiment, the pressure plate assembly 73 includes: a filling plate 731, which is arranged at one end of the pressure plate assembly 73, and a filling port 7311 is provided on the filling plate 731; a plurality of compacting plates 732, which together with the filling plate 731 form the plane of the pressure plate assembly 73; a connecting piece 733, which is respectively fixed at both ends of the filling plate 731 and the compacting plate 732; and a rotating shaft 734, which connects two adjacent connecting pieces 733.

[0028] That is to say, in the preparation stage before backfilling the lower part of the groove 1, the driving shaft pushes the rotating wheel out from the side wall of the support plate 3, and the winding box 71 releases the pressure plate assembly 73, so that the filling plate 731 passes around the bottom of the rotating wheel in the telescopic rotary wheel 31 and is connected to the electromagnet on the limit plate 53. At this time, the filling plate 731 and the compacting plate 732 are perpendicular to each other, and the compacting plate 732 fits against the side wall of the pipe 2, and then the filling space between the filling plate 731, the limiting plate 53 and the pipe 2 can be filled through the filling port 7311 on the filling plate 731. After the filling is completed, the moving clamping block 43 drives the limiting plate 53 moves in the direction away from the pipe 2, while pulling the compacting plate 732 adjacent to the filling plate 731. Under the action of the rotating shaft 734 and the connecting piece 733, the compacting plate 732 is restricted by the rotating wheel in the telescopic wheel 31 and deflected. Then, the telescopic shaft 72 drives the winding box 71 to move downward, so that the compacting plate 732 rotates to a horizontal state, and then the lower area of the groove 1 is filled again, and the process is repeated until the limit plate 53 fits into the inner side of the groove 1, and then the lifting column 41 moves upward to drive the limit plate 53 to separate from the lower part of the groove 1, and the pressure plate assembly 73 cooperates with the filling mechanism to complete the backfilling of the lower part of the groove 1.

[0029] As a preferred embodiment, during the backfilling process of the lower part of the trench 1, the limiting plate 53 drives the packing plate 731 to move horizontally towards both sides of the pipeline 2, and then drives the compaction plate 732 to bypass the rotating wheel in the telescopic rotating wheel 31 through the packing plate 731. The rotating wheel guides the compaction plate 732, so that the compaction plates 732 rotate relative to each other and pass through the rotating wheel. The compaction plates 732 and the packing plate 731 guided by the rotating wheel are recombined into a complete plane. The limiting plate 53 is fixedly connected to the packing plate 731. The limiting plate 53 is vertically arranged, and the packing plate 731 is perpendicular to the limiting plate 53. Under the common limitation of the limiting plate 53 and the rotating wheel in the telescopic rotating wheel 31, the plane formed by the compaction plates 732 and the packing plate 731 is always in a horizontal state. Since the pressing plate assembly 73 can only rotate unidirectionally, when backfilling the bottom of the compaction plate 732, as the filling material is filled and extruded, the plane formed by the compaction plates 732 and the packing plate 731 always remains flat and horizontal, restricting the filling material and promoting the tight filling of the filling material, making the backfilling more uniform. After the backfilling construction of the lower part of the trench 1 is completed, the limiting plate 53 and the pressing plate assembly 73 are retracted in sequence, and then the push shaft in the telescopic rotating wheel 31 pulls the rotating wheel back into the support plate 3 to avoid obstruction caused by the rotating wheel during the backfilling of the upper part of the trench 1.

[0030] During the specific implementation, first, in the preparation stage before backfilling the lower part of the groove 1, the rotating wheel is first pushed out from the side wall of the support plate 3 by the driving shaft, and the cylinder 62 pushes the lower arc pressure plate 63 downward, so that the lower arc pressure plate 63 fits the pipe 2 and fixes the position of the pipe 2. Then the lifting column 41 drives the movable slide 42 to move downward, and at the same time drives the limit plate 53 to slide downward along the inner wall of the support plates 3 at both ends until it fits the bottom of the groove 1. Then, the limit device 5 is driven as a whole by the movable slide 42 to move to a position close to the pipe 2 in the groove 1. Then the winding box 71 releases the pressure plate assembly 73, so that the filling plate 731 bypasses the bottom of the telescopic wheel 31 and is connected to the electromagnet on the limit plate 53. To backfill the lower part of the groove 1, the filling space between the filling plate 731, the limiting plate 53 and the pipe 2 can be filled through the filling port 7311 on the filling plate 731 to achieve tight filling of the angle area between the bottom of the pipe 2 and the groove 1. After the filling is completed, the moving clamping block 43 drives the limiting plate 53 to move away from the pipe 2, and at the same time pulls the compacting plate 732 adjacent to the filling plate 731. Under the action of the rotating shaft 734 and the connecting piece 733, the compacting plate 732 is restricted by the telescopic wheel 31 and deflected. Then, the telescopic shaft 72 drives the winding box 71 to move downward, so that the compacting plate 732 rotates to a horizontal state, and then the lower area of the groove 1 is filled again, and the filling is repeated. When the upper portion of the groove 1 is backfilled, the shaft is first pushed to retract the rotating wheel into the side wall of the support plate 3, and then the cylinder 62 drives the lower pressure arc plate 63 to move up and reset, away from the top horizontal plane of the groove 1, and the telescopic shaft 72 drives the winding box 71 to move up and reset, and retracts the pressure plate assembly 73, and then drives the rotating disk 522 to rotate on the extension piece 521, and the square slider 523 is restricted by the slide groove 531. Then, the square slider 523 drives the limit plate 53 to rotate at the bottom of the fixed plate 51, so that the limit plate 53 rotates to a position perpendicular to the fixed plate 51, and then under the continuous rotation of the driving screw 532, the limit plate 53 is driven to move on the square slider 523, so that the limit plate 53 gradually moves from both sides of the groove 1 to the middle where the pipe 2 is located, and the filling mechanism continues to fill the material into the groove 1 along the side of the limit plate 53. Before the limit plates 53 on both sides are closed, the material filled by the filling mechanism is in an overflow state, and then the filling mechanism is removed, the limit plate 53 is closed, and further compaction is performed by an external pressure mechanism. The material filled by the filling mechanism is a mixed material with a certain fluidity, such as concrete.

[0031] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. An urban road trench backfilling construction device, characterized in that, Comprising: Groove; Pipeline, arranged at the center of the bottom of the groove; Support plates, two groups are arranged along the direction of the groove, and two are symmetrically distributed about the pipeline in each group, and are fixedly connected to the outer side of the pipeline; Lifting and moving devices, four are arranged in a square distribution, and are fixed on both sides of the groove; Limiting devices, two groups are symmetrically distributed about the pipeline, and the two ends of the top of each group are fixedly connected to the lifting and moving devices on the same side; Fixing device, fixed on the top of the lifting and moving device; Positioning devices, two groups are symmetrically distributed about the pipeline, arranged between the limiting devices, and the top is fixedly connected to the fixing device; The limiting device includes: Fixing plate, the two ends of the top are respectively fixed on the two lifting and moving devices on the same side; Rotating connection components, two groups are symmetrically distributed, and are fixed at the two ends of the bottom of the fixing plate; Limiting plate, arranged below the fixing plate, rotatably connected to the fixing plate, connected to the rotating connection component, and an electromagnet arranged horizontally is provided inside the limiting plate; The positioning device includes: Rewinding box body, fixed at the bottom of the fixing device through a telescopic shaft body; Pressing plate assembly, one end is wound in the rewinding box body, and the other end hangs downwards, located at the side of the pipeline, and the pressing plate assembly can only rotate in one direction.

2. The construction equipment for trench backfilling of urban roads according to claim 1, characterized in that, A telescopic rotating wheel is provided in the support plate, and the telescopic rotating wheel is composed of a pushing shaft and a rotating wheel. The rotating wheel is pushed out from the side wall of the support plate by the pushing shaft, and the position of the telescopic rotating wheel in the support plate is higher than the position of the central axis of the pipeline.

3. The construction equipment for backfilling urban road trenches according to claim 1, characterized in that, The lifting and moving device includes: Lifting column, fixed on the side of the groove; Moving sliding table, moving up and down on the lifting column, and the setting direction of the moving sliding table is perpendicular to the setting direction of the pipeline; Moving clamping block, slidably arranged on the moving sliding table, and fixedly connected to one end of the top of the limiting device.

4. A construction equipment for backfilling urban road trenches according to claim 1, characterized in that, The rotating connection component includes: Extension piece, fixed at one end of the bottom of the fixing plate; Rotating disk, rotatably arranged on the outside of the extension piece; Square slider, arranged inside the extension piece, fixedly connected to the rotating disk, and connected to the side of the limiting plate.

5. The construction equipment for trench backfilling of urban roads according to claim 4, wherein, The limiting plate includes: Chute, two are symmetrically distributed, fixed at both ends of the limiting plate, and slidably connected to the square slider; Driving screw rod, rotatably arranged in the chute, and threadedly connected to the square slider.

6. The construction equipment for trench backfilling of urban roads according to claim 1, characterized in that, The fixing device includes: Top plate, fixed on the top of the lifting and moving device; Cylinder, fixed at the center of the top of the top plate, and the inner shaft thereof passes through the top plate downwards; Pressing arc plate, the top is fixed on the inner shaft of the cylinder, and the bottom corresponds to the top of the pipeline.

7. A construction equipment for backfilling urban road trenches according to claim 1, characterized in that, The pressing plate assembly includes: Packing plate, arranged at the hanging end of the pressing plate assembly, and a packing port is provided on the packing plate; Compacting plates, multiple are provided, and together with the packing plate form the plane of the pressing plate assembly; Connectors, respectively fixed at both ends of the packing plate and the compacting plates; Rotating shaft, connecting two adjacent connectors.

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