Urban road trench backfill construction equipment

Abstract

The present invention discloses an urban road trench backfill construction equipment, which relates to the technical field of trench backfill construction, comprising: a trench; a pipeline, which is arranged at the bottom center of the trench; two groups of support plates are arranged along the direction of the trench, and each group is provided with two plates symmetrically distributed about the pipeline and fixedly connected to the outer side of the pipeline; four lifting and moving devices are provided in a square distribution and fixed on both sides of the trench; two groups of limiting devices are provided symmetrically about the pipeline, and the top ends of the limiting devices are respectively fixedly connected to the lifting and moving devices on the same side; a fixing device is fixed on the top of the lifting and moving device; two groups of positioning devices are provided symmetrically about the pipeline, and are arranged between the limiting devices, and the top is fixedly connected to the fixing device; the present invention effectively solves the problem that an overhead structure is easily formed in the angle area at the bottom of the pipeline in the traditional process, significantly improves the uniformity of the filler density, reduces the backfill quality defect rate through multi-system collaboration, and effectively improves construction efficiency.

Description

Technical Field

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

[0002] With the acceleration of urbanization, the scale of underground pipeline network construction continues to expand. As a key link in road construction, the quality of pipeline trench backfilling directly affects the service life of the road and the safety of pipeline operation. Traditional backfill construction mostly adopts layered compaction or mechanical rolling methods, but it is limited by the single function of the equipment and the limitations of the process, which often leads to insufficient fit between the backfill material and the pipeline, especially at the angle between the bottom of the pipeline and the trench, resulting in gap defects and the risk of later settlement. In addition, during the compaction process, the angle at the bottom of the pipe often appears under-pressure due to the attenuation of compaction energy transfer, becoming a weak link in the structure. Other parts of the trench are often unevenly distributed due to the backfill material during the overall backfilling process, and the density is lacking during the compaction process, affecting the stability of the overall structure. Therefore, it is necessary to provide a kind of urban road trench backfill construction equipment to solve the problems raised in the above background technology. Summary of the Invention

[0003] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an urban road trench backfill construction equipment, comprising: a trench; a pipeline, arranged at the bottom center of the trench; two groups of support plates arranged along the trench direction, each group having two plates symmetrically distributed about the pipeline and fixedly connected to the outer side of the pipeline; four lifting and moving devices arranged in a square shape and fixed on both sides of the trench; two groups of limiting devices symmetrically distributed about the pipeline, the top ends of which are respectively fixedly connected to the lifting and moving devices on the same side; a fixing device, fixed on the top of the lifting and moving device; two groups of positioning devices symmetrically distributed about the pipeline and arranged between the limiting devices , the top is fixedly connected to the fixing device; the limiting device includes: a fixing plate, the two ends of the top are respectively fixed on the two lifting and moving devices on the same side; a rotating connection assembly is symmetrically distributed with two groups, fixed to the two ends of the bottom of the fixed plate; the limiting plate is arranged below the fixed plate, rotatably connected to the fixed plate, and connected to the rotating connection assembly, and a horizontally arranged electromagnet is provided inside the limiting plate; the positioning device includes: a winding box body, which is fixed to the bottom of the fixing device through a telescopic shaft; a pressure plate assembly, one end of which is wound in the winding box body, and the other end is hung downward, located on the side of the pipe, and the pressure plate assembly can only rotate in one direction.

[0004] Preferably, a telescopic wheel is provided in the support plate, and the telescopic wheel consists of a driving shaft and a rotating wheel. The driving shaft pushes the rotating wheel out from the side wall of the support plate, and the position of the telescopic wheel 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 on the side of the groove; a movable slide, arranged on the lifting column for up and down movement, and the setting direction of the movable slide is perpendicular to the setting direction of the pipeline; a movable clamping block, slidably set on the movable slide, and fixedly connected to the top end of the limiting device.

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

[0007] Preferably, the limit plate includes: two slide grooves symmetrically distributed, fixed at both ends of the limit plate, and slidingly connected to the square slider; a driving screw, rotatably set in the slide groove, and threadedly connected to the square slider.

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

[0009] Preferably, the pressure plate assembly includes: a filler plate, which is arranged at one end of the pressure plate assembly and has a filler port; a plurality of compacting plates, which together with the filler plates form the plane of the pressure plate assembly; connecting pieces, which are respectively fixed at both ends of the filler plate and the compacting plate; and a rotating shaft, which connects two adjacent connecting pieces.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The present invention forms a guiding system consisting of a support plate and a telescopic wheel, and cooperates with a pressure plate assembly driven by an electromagnet in a limiting device to form precise filling control of the bottom angle area of ​​the pipeline, effectively solving the problem that this area is prone to forming an overhead structure in traditional processes; a limiting plate driven by a lifting and moving device and a rotating connecting assembly is used to achieve step-by-step compression and dynamic compaction of the backfill space, so that the filler forms a two-way extrusion effect in the horizontal and vertical directions, significantly improving the uniformity of density; the rigid constraint of the pipeline by the lower pressure arc plate is avoided to avoid displacement of the pipe body during the backfilling process, thereby ensuring structural stability; the unidirectional rotating pressure plate assembly and the filler port design can achieve precise control of filler injection and automatic leveling of the compaction surface through plate deflection; the equipment reduces the backfill quality defect rate through multi-system collaboration, effectively improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of an urban road trench backfill construction equipment;

[0013] Figure 2 It is a structural schematic diagram of the backfill preparation stage in the present invention;

[0014] Figure 3 This is a schematic diagram of backfilling construction at the bottom of the trench in the present invention;

[0015] Figure 4 This is a schematic diagram of backfilling construction on the upper part of the trench in the present invention;

[0016] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0017] Figure 6 Schematic diagram of the structure of the rotating connection assembly and the limiting plate in the present invention;

[0018] Figure 7 It is a structural schematic diagram of the pressure plate assembly of the present invention;

[0019] In the figure: 1. groove; 2. pipe; 3. support plate; 4. lifting and moving device; 5. limiting device; 6. fixing device; 7. positioning device; 31. telescopic wheel; 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. lower pressure arc plate; 71. winding box; 72. telescopic shaft; 73. pressure plate assembly; 521. extension piece; 522. rotating disk; 523. square slider; 531. slide; 532. driving screw; 731. filling plate; 732. compacting plate; 733. connecting piece; 734. rotating shaft; 7311. filling port. DETAILED DESCRIPTION

[0020] See also Figures 1 to 7 In an embodiment of the present invention, an urban road trench backfill construction equipment includes: a trench 1; a pipe 2, arranged at the bottom center of the trench 1; two groups of support plates 3 are arranged along the direction of the trench 1, each group is symmetrically distributed with two pieces about the pipe 2 and fixedly connected to the outer side of the pipe 2; four lifting and moving devices 4 are arranged in a square shape and fixed on both sides of the trench 1; two groups of limiting devices 5 are symmetrically distributed about the pipe 2, and the two ends of the top are respectively fixedly connected to the lifting and moving devices 4 on the same side; a fixing device 6 is fixed to the top of the lifting and moving device 4; two groups of positioning devices 7 are symmetrically distributed about the pipe 2, and are arranged between the limiting devices 5, and the top is fixedly connected to the fixing device 6.

[0021] In this embodiment, a telescopic rotating wheel 31 is provided in the support plate 3. The telescopic rotating wheel 31 consists of a driving shaft and a rotating wheel. The driving shaft pushes the rotating wheel out from the side wall of the support plate 3, and the position of the telescopic rotating wheel 31 in the support plate 3 is higher than the position of the central axis of the pipe 2.

[0022] That is to say, when backfilling the lower part of the trench 1, that is, backfilling the part below the central axis of the pipe 2, the rotating wheel is pushed out from the side wall of the support plate 3 by pushing the shaft, guiding and restricting the positioning device 7, so that the positioning device 7 and the limiting device 5 divide the space between the trench 1 and the pipe 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 filling material to tightly fill the bottom angle area of ​​the pipe 2 and the lower part of the trench 1, and the backfill is more uniform.

[0023] In this embodiment, the lifting and moving device 4 includes: a lifting column 41, which is fixed on the side of the groove 1; a movable slide 42, which is arranged on the lifting column 41 for up and down movement, and the setting direction of the movable slide 42 is perpendicular to the setting direction of the pipeline 2; a movable clamping block 43, which is slidably set on the movable slide 42 and is fixedly connected to the top end of the limit device 5.

[0024] That is to say, under the action of the lifting column 41, the movable slide 42 is driven to move up and down, and the limit device 5 is driven to move up and down through the movable clamping block 43. When the movable clamping block 43 slides on the movable slide 42, it drives the limit device 5 to move in the groove 1, and gradually backfills the lower part of the groove 1.

[0025] In this embodiment, the limiting device 5 includes: a fixed plate 51, the two ends of the top of which are respectively fixed on the two lifting and moving devices 4 on the same side; a rotating connection component 52, two groups of which are symmetrically distributed and fixed on the two ends of the bottom of the fixed plate 51; a limiting plate 53, which is arranged below the fixed plate 51, is rotatably connected to the fixed plate 51, and is connected to the rotating connection component 52, and a horizontally arranged electromagnet is provided inside the limiting plate 53.

[0026] That is to say, when backfilling the lower part of the trench 1, the limiting device 5 is driven downward in the trench 1 by the lifting column 41, so that the limiting plate 53 slides downward along the inner wall of the support plates 3 at both ends until it fits with the bottom of the trench 1, and then the limiting device 5 is driven as a whole to move in the trench 1 by the moving slide 42, and the distance between the limiting plate 53 and the pipe 2 is adjusted, and the positioning device 7 that bypasses the telescopic wheel 31 is connected through the electromagnet inside the limiting plate 53. While adjusting the distance between the limiting plate 53 and the pipe 2, the space between the pipe 2 and the limiting plate 53 is closed by the positioning device 7, and backfilling is carried out. During the continuous backfilling work, the limiting plate 53 gradually moves away from the pipe 2 until the limiting plate 53 fits with the side wall of the trench 1, and then the limiting plate 53 is moved away from the pipe 2. The positioning plate 53 is disengaged from the positioning device 7 and is driven upward by the lifting column 41 to disengage from the lower part of the groove 1. Then, under the restriction of the positioning device 7, the backfill work of the lower part of the groove 1 is completed. By moving gradually, the backfill material is fully fitted with the angle area at the bottom of the pipe 2, and the backfill materials are squeezed against each other, effectively reducing the generation of gap defects and effectively avoiding the risk of settlement; when backfilling the upper part of the groove 1, the limiting plate 53 is rotated to a horizontal state on the fixed plate 51 by rotating the connecting assembly 52, that is, the limiting plate 53 is perpendicular to the fixed plate 51, and driven by the lifting column 41, the limiting plate 53 is fitted with the top of the groove 1, and the top of the groove 1 is covered by the joint action of the limiting plates 53 in the limiting devices 5 on both sides, and the backfilling work is carried out in cooperation with the filling mechanism.

[0027] 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 disk 522, rotatably arranged on the outside of the extension piece 521; a square slider 523, arranged on the inner side of the extension piece 521, fixedly connected to the rotating disk 522, and connected to the side of the limiting plate 53.

[0028] That is to say, by driving the rotating disk 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, it is possible to adapt to the backfilling work of different areas of the groove 1. It should be noted that the rotating disk 522 can be driven by manpower, or micro motors can be set at both ends of the fixed plate 51 to directly drive the rotating disk 522.

[0029] In this embodiment, the limiting plate 53 includes: two slide grooves 531 symmetrically distributed, fixed at both ends of the limiting plate 53 , and slidingly connected to the square slider 523 ; a driving screw 532 rotatably set in the slide groove 531 and threadedly connected to the square slider 523 .

[0030] That is to say, by driving the rotating disk 522 to rotate on the extension piece 521, the square slider 523 is restricted by the slide groove 531, and then the square slider 523 drives the limit plate 53 to rotate on the bottom of the fixed plate 51. When the limit plate 53 rotates to a position perpendicular to the fixed plate 51, the driving screw 532 is driven to rotate on the square slider 523. Since the square slider 523 is restricted by the rotating disk 522 and is in a fixed position, the continuous rotation of the driving screw 532 drives the limit plate 53 to move on the square slider 523, that is, the limit plate 53 moves in the horizontal direction to adjust the coverage range of the top of the groove 1. When backfilling the upper part of the groove 1, the limit plate 53 moves from both sides of the groove 1 to the position of the middle pipe 2. As the filling material is injected, it gradually moves until the limit plates 53 on both sides are in contact with each other, thereby sealing and compacting the groove 1.

[0031] In this embodiment, the fixing device 6 includes: a top plate 61, fixed on the top of the lifting and moving device 4; a cylinder 62, fixed on the top center of the top plate 61, and its internal axis passes downward through the top plate 61; a downward pressure arc plate 63, the top of which is fixed on the internal axis of the cylinder 62, and the bottom corresponds to the top of the pipeline 2.

[0032] That is to say, when backfilling the lower part of the trench 1, the cylinder 62 pushes the lower pressure arc plate 63 downward so that the lower pressure arc plate 63 fits against the pipe 2 and fixes the position of the pipe 2 to prevent the pipe 2 from being offset due to pressure when backfilling the angle area between the pipe 2 and the bottom of the trench 1, thereby affecting the integrity of the backfill; when backfilling the upper part of the trench 1, the cylinder 62 drives the lower pressure arc plate 63 to move upward and reset, away from the top horizontal plane of the trench 1.

[0033] In this embodiment, the positioning device 7 includes: a winding box 71, which is fixed to the bottom of the fixing device 6 through a telescopic shaft 72; a pressure plate assembly 73, one end of which is wound in the winding box 71 and the other end is hung downward, located on the side of the pipe 2, and the pressure plate assembly 73 can only rotate in one direction.

[0034] That is to say, in the preparation stage before backfilling the lower part of the trench 1, the winding box 71 releases the pressure plate assembly 73, so that the pressure plate assembly 73 bypasses the bottom of the telescopic wheel 31 and connects with the electromagnet on the limit plate 53. Under the pulling action of the limit plate 53 and the downward movement of the winding box 71, the pressure plate assembly 73 is jointly driven to close the lower part of the trench 1 and complete the backfilling work.

[0035] 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.

[0036] 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.

[0037] As a preferred embodiment, during the backfilling process of the lower part of the trench 1, the limiting plate 53 drives the filling plate 731 to move horizontally toward both sides of the pipe 2, and then drives the compacting plate 732 to bypass the rotating wheel in the telescopic wheel 31 through the filling plate 731. The rotating wheel guides the compacting plate 732 so that each compacting plate 732 rotates with each other and passes through the rotating wheel. The compacting plates 732 and the filling plates 731 guided by the rotating wheel are recombined into a complete plane, and the limiting plate 53 is fixedly connected to the filling plate 731. The limiting plate 53 is vertically arranged, and the filling plate 731 is perpendicular to the limiting plate 53. The rotating wheel between the limiting plate 53 and the telescopic wheel 31 Under the common restriction, the plane formed by each compacting plate 732 and the filling plate 731 is always in a horizontal state. Since the pressure plate assembly 73 can only rotate in one direction, when backfilling to the bottom of the compacting plate 732, as the filling material is filled and squeezed, the plane formed by each compacting plate 732 and the filling plate 731 always remains flat and horizontal, restricting the filling material, promoting tight filling of the filling material, and making the backfill more uniform. After the backfill construction of the lower part of the groove 1 is completed, the limit plate 53 and the pressure plate assembly 73 are retracted in turn, and then the driving shaft in the telescopic wheel 31 pulls the rotating wheel back to the support plate 3 to avoid the rotating wheel causing obstruction when backfilling the upper part of the groove 1.

[0038] 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.

[0039] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An urban road trench backfilling construction equipment, characterized in that: include: groove; The pipe is set in the bottom center of the trench; Two groups of support plates are set along the groove, with two plates in each group symmetrically distributed about the pipeline and fixedly connected to the outside of the pipeline; There are four lifting and moving devices distributed in a square shape and fixed on both sides of the groove; The limiting device is symmetrically distributed with two sets about the pipeline, and the top ends thereof are fixedly connected to the lifting and moving device on the same side; A fixing device, fixed on the top of the lifting and moving device; The positioning device is provided with two groups symmetrically distributed about the pipeline, arranged between the limiting devices, and the top is fixedly connected to the fixing device; The limiting device includes: The top ends of the fixed plate are respectively fixed to the two lifting and moving devices on the same side; The rotating connecting components are symmetrically distributed with two groups, fixed at both ends of the bottom of the fixed plate; A limit plate is provided below the fixed plate, is rotatably connected to the fixed plate, and is connected to the rotation connection assembly, and a horizontally arranged electromagnet is provided inside the limit plate; The positioning device comprises: The winding box is fixed to the bottom of the fixing device through a telescopic shaft; One end of the pressure plate assembly is wound in the winding box, and the other end is hung downward and located on the side of the pipeline, and the pressure plate assembly can only rotate in one direction.

2. The urban road trench backfilling construction equipment according to claim 1, characterized in that: The support plate is provided with a telescopic rotating wheel, which consists of a driving shaft and a rotating wheel. The driving shaft pushes the rotating wheel out from the side wall of the support plate, 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 urban road trench backfilling construction equipment according to claim 1, characterized in that: The lifting and moving device comprises: Lifting columns, fixed to the sides of the trench; A movable slide is arranged on the lifting column for vertical movement, and the arrangement direction of the movable slide is perpendicular to the arrangement direction of the pipeline; The movable clamping block is slidably arranged on the movable slide and is fixedly connected to one end of the top of the limiting device.

4. The urban road trench backfilling construction equipment according to claim 1, characterized in that: The rotating connection assembly includes: An extension piece, fixed to one end of the bottom of the fixed plate; A rotating disk is rotatably arranged on the outer side of the extension piece; The square sliding block is arranged on the inner side of the extension piece, fixedly connected to the rotating disk, and connected to the side of the limiting plate.

5. The urban road trench backfilling construction equipment according to claim 4, characterized in that: The limiting plate includes: There are two symmetrically distributed slides, fixed at both ends of the limit plate, and slidably connected with the square slider; The driving screw is rotatably arranged in the slide groove and is threadedly connected with the square slider.

6. The urban road trench backfilling construction equipment according to claim 1, characterized in that: The fixing device comprises: A top plate, fixed to the top of the lifting and moving device; The cylinder is fixed at the top center of the top plate, and its internal shaft passes downward through the top plate; Press the arc plate downward, with the top fixed on the inner shaft of the cylinder and the bottom corresponding to the top of the pipe.

7. The urban road trench backfilling construction equipment according to claim 1, characterized in that: The pressure plate assembly comprises: A filler plate is provided at one end of the vertical pressure plate assembly and is provided with a filler port; A plurality of compacting plates are provided, which together with the filler plates form a plane of the compacting plate assembly; Connecting pieces, fixed at both ends of the filler plate and the compacting plate respectively; Rotate the shaft to connect two adjacent connecting pieces.

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