Pipeline corner cushion layer paving and compacting integrated device and use method thereof

Abstract

The present invention discloses an integrated device for paving and compacting the pipe corner cushion layer, wherein the left and right sides of the pipe form a corner portion between the base layer and the left and right sides of the pipe; the device includes a storage hopper, the storage hopper is provided with a straddling groove, the storage hopper above the pipe is connected to a traveling wheel through a wheel frame, and the traveling wheel is supported downward on the top of the pipe; at least one traveling wheel is connected to a driving device, and a plurality of traveling wheels are symmetrically provided on the front and rear sides of the storage hopper; the storage hoppers on the left and right sides of the pipe are respectively connected downward to a blanking and vibrating mechanism, and the blanking and vibrating mechanism is symmetrically provided on the left and right sides of the pipe; the blanking and vibrating mechanism includes a blanking device for conveying backfill to the corner portion and a vibrating device for vibrating the backfill in the corner portion. The present invention also discloses a corresponding method of use. The present invention adopts a self-propelled vibrating and paving integrated device, which spreads, statically presses, and vibrates at the same time, and is layered according to the thickness of the corner cushion layer. It adopts multiple groups of paving and rolling structures for synchronous implementation, so as to achieve the effect of completing the backfilling of the corner in one go.

Description

Technical Field

[0001] The present invention relates to the field of pipeline engineering construction, and in particular to a paving and compacting technology for pipeline corner cushion layers. Background Art

[0002] The pipe backfill is located below the pipe and is typically cushioned with coarse sand. The quality of the backfill directly affects the designed pipe wall thickness and designed cover height. The difficulty of the backfill process lies in the backfill at the pipe backfill.

[0003] Due to the narrow space at the pipe's armpit corners, using a flat plate compactor or a jumping compactor (both of which vibrate vertically) will easily cause damage to the pipe due to the large vibration amplitude. Therefore, manual compaction is usually performed during actual construction. Manual compaction is time-consuming and labor-intensive, the compaction quality varies, the construction quality cannot be guaranteed, and the construction efficiency is low.

[0004] The current mechanical devices for backfilling and compacting pipe corners mostly perform compaction on one side, which can easily cause the laid pipes to shift and affect the quality of the project; the use of manually controlled compaction machinery poses a production safety hazard; and the use of manual paving and leveling results in low construction efficiency.

[0005] In the existing technology, the backfill material in the armpit corner is manually fed with machinery such as an excavator (backhoe), and vibrated by hand-held vibrating equipment. This requires a lot of manpower, is labor-intensive, and requires much work efficiency to be improved.

[0006] The research and development purpose of the present invention is to improve the work efficiency of backfilling and vibrating at the axil corners and reduce the requirement for the number of workers.

[0007] The difficulty of automatically feeding materials to the armpit corner by machine is that the mechanical shovel or bucket needs manual operation and must be aimed at the armpit corner. If an artificial intelligence algorithm is designed to replace manual control of the mechanical shovel or bucket to feed materials to the armpit corner, the design will be difficult, costly and the effect will be questionable.

[0008] As vibration progresses, the backfill in the corners becomes increasingly compacted, and the outermost layer of backfill moves further away from the vibrator (closer to the center of the pipe). If vibrating manually, the operator naturally moves forward, maintaining pressure on the vibrator toward the corners to maintain the vibrating effect. The difficulty with automatic mechanical vibration is that the vibrator does not automatically advance during the compaction of the backfill, making it difficult to further compact the backfill. If a distance sensor is used to measure the distance between the vibrator and the backfill, and an electronic control unit controls the actuator to maintain the distance between the vibrator and the outermost backfill, the backfill may splash during vibration, seriously affecting the distance measurement and making the distance maintenance action unreliable. Summary of the Invention

[0009] The purpose of the present invention is to provide an integrated device for paving and compacting the pipe corner cushion layer, which improves work efficiency by simultaneously constructing on the left and right sides of the pipe, paving the backfill material and vibrating and compacting the backfill material.

[0010] To achieve the above-mentioned object, the present invention provides an integrated device for paving and compacting a pipe corner cushion layer, wherein the pipe is supported on a base layer, and a corner portion is formed between the left and right sides of the pipe and the base layer; the device comprises a storage hopper, which is provided with a straddling groove with a downward opening that matches the pipe; the storage hopper above the pipe is connected to running wheels via a wheel frame, and the running wheels are supported downward on the top of the pipe, and a gap is formed between the straddling groove of the storage hopper and the pipe wall; at least one running wheel is connected to a driving device, which is an electric motor; and a plurality of running wheels are symmetrically provided on the front and rear sides of the storage hopper;

[0011] The storage hoppers on the left and right sides of the pipeline are respectively connected downwards with a blanking and vibrating mechanism, and the blanking and vibrating mechanisms are symmetrically arranged on the left and right sides of the pipeline;

[0012] The blanking and vibrating mechanism comprises a blanking device for conveying backfill materials to the axillary corners and a vibrating device for vibrating the backfill materials at the axillary corners.

[0013] The material dropping device includes a material dropping pipe, the upper end of which is in communication with the storage hopper, the direction pointing to the vertical plane where the center line of the pipeline is located is considered as the inward direction, the material dropping pipe extends downward and inward, and the lower end of the material dropping pipe has an opening and the opening is directed toward the armpit corner;

[0014] Taking the forward direction during construction as the forward direction, a fixed scraper is fixedly connected to the rear side of the lower end of the drop tube, and the inner end of the fixed scraper is hinged to a movable support plate through a spring hinge; in a free state without external force, the fixed scraper and the movable support plate are 180 degrees.

[0015] The vibrating device is located behind the blanking device;

[0016] The vibrating device includes a vibrating fixed arm and a vibrator; the vibrating fixed arm is fixedly connected to the storage hopper upward, and an inclined through hole with a higher outer side and a lower inner side is provided on the vibrating fixed arm along the inner and outer directions;

[0017] The outer surface of the vibrating fixed arm is fixedly connected to an upper vibrating mounting plate above the inclined through hole, and the outer surface of the vibrating fixed arm is fixedly connected to a lower vibrating mounting plate below the inclined through hole. The upper vibrating mounting plate is upwardly and outwardly connected to an upper return spring, and the lower vibrating mounting plate is upwardly and outwardly connected to a lower return spring. An anthropomorphic pressure plate is fixedly connected between the outer ends of the upper return spring and the lower return spring.

[0018] The vibrator passes through the inclined through-hole, the inner end of the vibrator is connected to a vibrating rod downwardly and inwardly, and the end of the vibrating rod is fixedly connected to a vibrating plate; the outer end of the vibrator is located above the outer side of the inclined through-hole and connected to the anthropomorphic pressure plate; the vibrating plate is perpendicular to the vibrating rod and its inclination angle is the same as the predetermined axillary angle slope;

[0019] The extension directions of the upper vibration mounting plate, the lower vibration mounting plate, the upper return spring and the lower return spring are all parallel to the center line of the inclined through hole. The upper return spring, the lower return spring and the anthropomorphic pressure plate form an anthropomorphic vibration pressing structure.

[0020] Taking the forward direction during construction as the forward direction, each of the left and right sides of the pipeline is equipped with two sets of front and rear blanking and vibrating mechanisms, namely the front blanking and vibrating mechanism and the rear blanking and vibrating mechanism;

[0021] The bottom opening of the blanking pipe in the front blanking and vibrating mechanism is located in the middle and lower part of the axillary corner, and is used to transport the lower layer of backfill material to the middle and lower part of the axillary corner; the height of the vibrating plate in the front blanking and vibrating mechanism matches the predetermined height of the lower layer of backfill material;

[0022] The bottom end opening of the blanking pipe of the rear blanking vibration mechanism is located in the upper middle part of the armpit corner, and is used to transport the upper layer of backfill material to the top of the lower layer of backfill material in the armpit corner; the height of the vibration plate in the rear blanking vibration mechanism matches the total height of the predetermined upper layer of backfill material and the lower layer of backfill material.

[0023] The slope of the vibrating plate of the front blanking vibrating mechanism is 60 degrees, and the slope of the vibrating plate of the rear blanking vibrating mechanism is 30 degrees.

[0024] There are three traveling wheels symmetrically arranged on the front and back sides of the storage hopper. Among the three traveling wheels on the front side of the storage hopper, the traveling wheel located in the middle is located at the top of the pipeline, and the two traveling wheels on the left and right sides are symmetrically arranged, and the central angle α formed by the two and the center of the pipeline is 120 degrees.

[0025] The present invention also discloses a method for using the above-mentioned pipeline corner cushion layer paving and compacting integrated device, which is performed according to the following steps:

[0026] The first is preparation. Before the preparation work, when backfilling in layers according to the project objectives, the amount of backfill in each layer, that is, the thickness of backfill, should be set accordingly. The diameter of the blanking pipe of the blanking and vibrating mechanism should be selected accordingly.

[0027] According to the actual size of the middle and lower corners of the current project, the staff replaced the fixed scraper and movable support plate with models that match the size of the current project;

[0028] The second is loading;

[0029] The preparation work specifically involves installing the storage hopper astride the pipeline and filling it with backfill. At this time, the backfill is transported to the axilla area through the drop pipes of each drop vibrating mechanism. The backfill in contact with the base layer has friction with the base layer, and there is also friction between the backfill particles. After the backfill fills the axilla area and overflows, the backfill seals the opening of the drop pipe, and the drop automatically stops due to the action of friction.

[0030] The third is initialization;

[0031] The staff manually pulls outward the movable support plates of each blanking and vibrating mechanism, and after releasing the plates, they press from the outside to the inside on the backfill material at the armpit corners;

[0032] The staff manually pulls out the anthropomorphic pressure plate and vibrator until the upper and lower return springs reach their maximum tension positions;

[0033] The fourth is the integrated paving and compaction operation;

[0034] The driving device and the vibrators of each blanking and vibrating mechanism are started. The driving device drives the pipeline axil corner cushion layer paving and compacting integrated device to move forward along the pipeline. The material in the storage hopper is continuously fed into the axil corner through the blanking pipes of each blanking and vibrating mechanism during the process of moving forward.

[0035] In each blanking and vibrating mechanism, the fixed scraper adjacent to the rear of the blanking pipe automatically scrapes and levels the backfill material sent into the axil corner during its advancement, and the movable support plate hinged to the fixed plate performs preliminary compaction on the backfill material.

[0036] The vibrator behind the movable support plate drives the vibrating plate to vibrate and compact the backfill material in the axilla corner area. During the backfill material compaction process, as the backfill material becomes more and more compacted, the upper return spring and the lower return spring retract and press the vibrator deep into the axilla corner area through the anthropomorphic pressure plate to prevent the vibrating plate and the backfill material in the axilla corner area from losing the vibration and compaction effect due to a virtual connection.

[0037] In the process of moving forward, the backfill is continuously spread forward from the left and right sides of the pipeline to the armpit corners and vibrated and compacted until the backfill spreading and compaction work at the armpit corners of the predetermined pipeline section is completed or the storage hopper needs to be filled; when the storage hopper needs to be filled, the driving device is stopped first, and then the second step, i.e., the loading step, is used again to execute this method of use.

[0038] The driving device is a variable frequency motor. During the fourth step, if the paving thickness of each layer of backfill material does not match the predetermined thickness, the forward speed of the pipeline corner cushion layer paving and compaction integrated device is adjusted by adjusting the working frequency of the variable frequency motor, and then the paving thickness of each layer of backfill material is adjusted to match the predetermined thickness.

[0039] The invention also discloses a method for using the above-mentioned pipeline corner cushion layer paving and compacting integrated device.

[0040] The present invention has the following advantages:

[0041] The present invention adopts a self-propelled vibration and paving integrated device, which spreads, statically presses and vibrates at the same time, and is layered according to the thickness of the axil corner. It adopts multiple groups of paving and rolling structures to implement it synchronously, so as to achieve the effect of completing the backfilling of the axil corner in one go.

[0042] The present invention adopts trackless driving wheels to enable the pipeline armpit corner cushion backfilling device to move forward along the top of the steel pipe as a whole, without being restricted by the base conditions and without disturbing the base, thereby improving the horizontal transportation efficiency of backfill materials and construction equipment.

[0043] The paving and vibrating device of the present invention is installed with a bilaterally symmetrical structure, which can not only ensure that the pipeline does not deviate (the vibrating forces on both sides of the pipeline can offset each other for the most part, avoiding the vibration force causing the pipeline to deviate), but also utilize resonance to improve the vibration capacity of the equipment.

[0044] The vibrating fixed arm of the present invention adopts a sliding clamping design. While holding the vibrating device and walking, it ensures that the direction of the vibrator's excitation force is perpendicular to the axillary corner slope (the vibrating plate and the vibrating rod are perpendicular), and weakens the vibration effect of the excitation force on the vibrating fixed arm and the pipeline axillary corner cushion backfill device.

[0045] The tail (outer end) of the vibrator of the present invention adopts a spring structure for limiting and resetting, ensuring that the vibrating plate is always in a compressed state on the backfill material in the axil corner, and compacting is performed by utilizing the excitation force of the impact component inherent in the vibrator, while reducing the impact of the excitation force on the vibrating fixed arm.

[0046] The vibrator in the present invention adopts the impact component commonly used in electric pickaxes (which belongs to conventional technology) to generate exciting force to vibrate and compact the backfill material, overcoming the shortcomings of the inflexibility of the commonly used compacting equipment in the backfill material in the axil corner area, and breaking through the technical bottleneck of backfilling in the axil corner area in a narrow space that requires oblique compaction.

[0047] The present invention uses a blanking device to automatically drop material into the corners. Compared to previous methods that required dedicated personnel to operate a machine to drop material into the corners, this method saves labor and improves delivery efficiency. The present invention integrates paving and vibrating operations, ensuring backfill quality while improving construction efficiency. Previously, construction was performed on one side of the pipeline, resulting in uneven force on both sides during construction, which negatively impacted the pipeline. The present invention utilizes symmetrical construction on both sides of the pipeline, which not only improves efficiency but also ensures more even force on the pipeline.

[0048] During construction, the movable support plate presses the backfill material in the armpit corners inward under the action of the torque generated by the spring hinge, which plays a role in preliminary compression and compaction of the backfill material.

[0049] The technical function of the anthropomorphic vibration compaction structure is to simulate manual pressure on the vibrator at the axilla corner, allowing the vibrator to gradually penetrate the axilla corner during the gradual compaction process, thereby ensuring the vibration effect. If the anthropomorphic compaction related structure is not available and the vibrator is fixed, the vibrator will not be able to maintain the compaction state on the backfill in the axilla corner during the gradual compaction process (it will not be able to gradually penetrate the axilla corner), thus significantly weakening the vibration effect.

[0050] Compared with non-layered vibration, layered vibration can compact the backfill more compactly under the same power (energy consumption) conditions.

[0051] In the operation method of the prior art, the spreading of backfill and the vibration work cannot be carried out at the same time. First, the backfill is manually operated mechanically or even manually transported to the axillary corner area, and then the spread backfill is manually vibrated on one side of the pipe. After vibrating one side, the other side is vibrated. The existing operation method has low work efficiency and high labor intensity. Personnel and equipment need to go back and forth several times along the pipeline construction section. The present invention uses the blanking and vibrating mechanisms on both sides of the pipe to simultaneously perform spreading and anthropomorphic mechanical vibration. Both sides are carried out at the same time, and spreading and vibrating are also carried out at the same time. There is no need for manual hand-held vibrators to apply tight pressure deep into the axillary corner area. Work efficiency is greatly improved, labor intensity is also greatly reduced, and the number of operators required is also greatly reduced.

[0052] The slope of the vibrating plates of the front and rear blanking vibration mechanisms decreases from front to back, which better simulates the layered vibration process of a manually operated vibrator and has a better vibration and compaction effect.

[0053] The present invention adopts a saddle-shaped storage hopper with a low center of gravity and is not easy to overturn. The present invention adopts three wheels in front and behind the pipeline as fulcrums within a range of 120 degrees, so the steel pipe pipeline is not easy to deform.

[0054] The present invention is simple and reliable to use. After initialization, the process can continue until the scheduled paving and compaction work is completed or until the material needs to be added, significantly improving work efficiency compared to previous methods. The present invention can efficiently and high-quality complete the paving and compaction of backfill in the pipe corners, avoiding subsequent damage to the pipe due to poor backfill quality in the corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a structural schematic diagram of the present invention; Figure 1 The direction of the arrow in the middle is the forward direction during construction;

[0056] Figure 2 yes Figure 1 Left view of;

[0057] Figure 3 yes Figure 1 AA view;

[0058] Figure 4 yes Figure 1 Right view;

[0059] Figure 5 yes Figure 2 Enlarged view of point A in the middle;

[0060] Figure 6 yes Figure 1 Enlarged view of the center-front blanking and vibrating mechanism. DETAILED DESCRIPTION

[0061] like Figures 1 to 6 As shown, the present invention provides an integrated device for paving and compacting a pipe corner cushion layer, wherein a pipe 1 is supported on a base layer 2, with a corner portion 3 formed between the left and right sides of the pipe 1 and the base layer 2; the device comprises a saddle-shaped storage hopper 4, which is provided with a downward-opening straddling groove 5 that matches the pipe 1; the storage hopper 4 above the pipe 1 is connected to a running wheel 6 via a wheel frame, and the running wheel 6 is supported downward on the top of the pipe 1, with a gap 7 between the straddling groove 5 of the storage hopper 4 and the wall of the pipe 1; at least one running wheel 6 is connected to a driving device, which is an electric motor; a plurality of running wheels 6 are symmetrically provided on the front and rear sides of the storage hopper 4 (in this embodiment, three running wheels 6 are provided on each side of the storage hopper 4);

[0062] The storage hoppers 4 on the left and right sides of the pipeline 1 are respectively connected downwardly to a blanking and vibrating mechanism. The blanking and vibrating mechanisms are symmetrically arranged on the left and right sides of the pipeline 1. The advantage of the symmetrical arrangement is that the vibrating forces on both sides can offset most of each other, thereby avoiding the vibration force causing the pipeline to deviate;

[0063] The blanking and vibrating mechanism includes a blanking device for conveying backfill material (the backfill material is usually sand and gravel) to the axillary corner portion 3 and a vibrating device for vibrating the backfill material in the axillary corner portion 3 .

[0064] The present invention uses a material dropping device to automatically drop material into the axilla corner 3. Compared to previous methods that required a dedicated person to operate a mechanical device to drop material into the axilla corner 3, this method saves labor and improves delivery efficiency. The present invention integrates paving and vibrating operations, ensuring backfill quality while improving construction efficiency. Previous construction on one side of the pipeline 1 resulted in uneven force on both sides of the pipeline 1, negatively impacting the pipeline 1. The present invention utilizes symmetrical construction on both sides of the pipeline 1, which not only improves efficiency but also more evenly distributes force on the pipeline 1.

[0065] The material dropping device includes a material dropping pipe 8, the upper end of which is in communication with the storage hopper 4, and the direction pointing to the vertical plane where the center line of the pipeline 1 is located is considered as the inward direction. The material dropping pipe 8 extends downward and inwardly, and the lower end of the material dropping pipe 8 has an opening and the opening is directed toward the armpit corner portion 3;

[0066] Taking the forward direction during construction as the forward direction, a fixed scraper 9 is fixedly connected to the rear side of the lower end of the drop tube 8, and the inner end of the fixed scraper 9 is hinged to a movable support plate 10 through a spring hinge; in a free state without external force, the fixed scraper 9 and the movable support plate 10 are 180 degrees.

[0067] During construction, the movable support plate 10 presses the backfill material at the axil corner portion 3 inwardly under the action of the torque generated by the spring hinge, thereby achieving a preliminary compression and compaction of the backfill material.

[0068] The vibrating device is located behind the blanking device;

[0069] The vibrating device includes a vibrating fixed arm 11 and a vibrator 12; the vibrating fixed arm 11 is fixedly connected to the storage hopper 4 upward, and an inclined through hole 13 with a higher outer side and a lower inner side is provided on the vibrating fixed arm 11 along the inner and outer directions;

[0070] An upper vibrating mounting plate 14 is fixedly connected to the outer surface of the vibrating fixed arm 11 above the inclined through hole 13. A lower vibrating mounting plate 15 is fixedly connected to the outer surface of the vibrating fixed arm 11 below the inclined through hole 13. An upper return spring 16 is upwardly and outwardly connected to the upper vibrating mounting plate 14. A lower return spring 17 is upwardly and outwardly connected to the lower vibrating mounting plate 15. An anthropomorphic pressure plate 18 is fixedly connected between the outer ends of the upper return spring 16 and the lower return spring 17.

[0071] The vibrator 12 passes through the inclined through-hole 13. The inner end of the vibrator 12 is connected to a vibrating rod 19 downward and inward (i.e., toward the depth of the axillary corner portion 3). The end of the vibrating rod 19 is fixedly connected to a vibrating plate 20. The outer end of the vibrator 12 is located above and outside the inclined through-hole 13 and is connected to the anthropomorphic pressure plate 18. The vibrating plate 20 is perpendicular to the vibrating rod 19 and its inclination angle is the same as the inclination angle of the predetermined backfill slope of the axillary corner portion 3.

[0072] The extension directions of the upper vibration mounting plate 14, the lower vibration mounting plate 15, the upper return spring 16, and the lower return spring 17 are all parallel to the center line of the inclined through hole 13. The upper return spring 16, the lower return spring 17 and the anthropomorphic pressure plate 18 constitute an anthropomorphic vibration pressing structure.

[0073] During use, the vibrator 12 and the drive device (when using a motor) require a power cable connection. The power source for the cable connection can be an external power source or a diesel generator installed on the storage hopper 4. Both the cable connection and the diesel generator are conventional technologies and will not be described in detail.

[0074] The technical function of the anthropomorphic vibration and compaction structure is to simulate manual pressure applied to the vibrator 12 at the corner 3, causing the vibrator 12 to gradually penetrate the corner 3 during the compaction process, thereby ensuring effective vibration. Without the anthropomorphic compaction structure, and instead using a fixed vibrator 12, the vibrator 12 would not be able to maintain a constant pressure on the backfill material in the corner 3 during the gradual compaction process (it would not be able to gradually penetrate the corner 3), significantly weakening the vibration effect.

[0075] Taking the forward direction during construction as the forward direction, each of the left and right sides of the pipeline 1 is provided with two sets of front and rear blanking and vibrating mechanisms, namely the front blanking and vibrating mechanism 21 and the rear blanking and vibrating mechanism 22;

[0076] The bottom end opening of the drop pipe 8 in the front drop vibrating mechanism 21 is located in the middle and lower part of the armpit corner area 3 and is used to transport the lower layer of backfill material to the middle and lower part of the armpit corner area 3; the height of the vibrating plate 20 in the front drop vibrating mechanism 21 matches the predetermined height of the lower layer of backfill material (the construction designer predetermines the height of the lower layer of backfill material in advance and determines the size of the drop pipe 8 in the front drop vibrating mechanism 21 and the construction travel speed accordingly, so that the amount of material transported by the drop pipe 8 in the front drop vibrating mechanism 21 during travel matches the amount required to form the lower layer of backfill material. After the design is completed, various design parameters are verified through experiments and modified according to the experimental results until the design goals are achieved).

[0077] The bottom end opening of the blanking pipe 8 of the rear blanking and vibrating mechanism 22 is located in the upper middle part of the armpit corner area 3, and is used to transport the upper layer of backfill material to the top of the lower layer of backfill material in the armpit corner area 3; the height of the vibrating plate 20 in the rear blanking and vibrating mechanism 22 matches the total height of the predetermined upper layer of backfill material and the lower layer of backfill material.

[0078] Compared with non-layered vibration, layered vibration can compact the backfill more compactly under the same power (energy consumption) conditions.

[0079] In the operation method of the prior art, the spreading of backfill material and the vibration work cannot be carried out at the same time. First, the backfill material is manually operated mechanically or even manually delivered to the axillary corner part 3, and then the spread backfill material is manually vibrated on one side of the pipe 1. After vibrating one side, the other side is vibrated. The existing operation method has low work efficiency and high labor intensity. Personnel and equipment need to go back and forth several times along the construction section of the pipe 1. The present invention uses the blanking and vibrating mechanisms on both sides of the pipe 1 to simultaneously perform spreading and anthropomorphic mechanical vibration. Both sides are carried out at the same time, and spreading and vibrating are also carried out at the same time. There is no need for manual hand-held vibrator 12 to apply tight pressure to the deep direction of the axillary corner part 3. The work efficiency is greatly improved, the labor intensity is also greatly reduced, and the number of operators required is also greatly reduced.

[0080] The slope of the vibrating plate 20 of the front blanking and vibrating mechanism 21 (the angle between the vibrating plate 20 and the horizontal plane) is 60 degrees, and the slope of the vibrating plate 20 of the rear blanking and vibrating mechanism 22 is 30 degrees.

[0081] The present invention is not limited to setting up only two sets of blanking and vibrating mechanisms in the front and rear directions. For example, a middle blanking and vibrating mechanism can be set between the front blanking and vibrating mechanism 21 and the rear blanking and vibrating mechanism 22 to perform three-layer paving and three-layer vibration. In this case, the slope of the vibrating plate 20 of the middle blanking and vibrating mechanism is 45 degrees (the slope of each layer of backfill material decreases from bottom to top).

[0082] The slope of the vibrating plates 20 of the front and rear blanking and vibrating mechanisms 22 decreases from front to back, which better simulates the layered vibration process of the manually operated vibrator 12 and has a better vibration and compaction effect.

[0083] Three running wheels 6 are symmetrically provided on the front and rear sides of the storage hopper 4. Among the three running wheels 6 on the front side of the storage hopper 4, the running wheel 6 located in the relatively middle is located at the top of the pipeline 1, and the two running wheels 6 on the left and right sides are symmetrically arranged, and the central angle α formed by the two and the center of the pipeline 1 is 120 degrees.

[0084] The present invention adopts a saddle-shaped storage hopper 4 with a low center of gravity and is not easy to overturn. The present invention adopts three wheels in front and behind the pipeline 1 as fulcrums within a range of 120 degrees, so the steel pipe pipeline 1 is not easy to deform.

[0085] The present invention also discloses a method for using the above-mentioned pipeline corner cushion layer paving and compacting integrated device, which is performed according to the following steps:

[0086] The first step is preparation. Before preparation, the backfill volume, i.e., the thickness, of each layer of backfill is preset according to the project objectives. (This is conventional technology. In the prior art, the backfill volume, i.e., the thickness, of each layer of backfill is also determined when paving the corner bedding layer of the pipe 1 in layers.) The diameter of the blanking pipe 8 of the blanking and vibrating mechanism is selected accordingly for the corresponding number of layers. (A larger diameter means more material is dropped under the same working conditions, and the amount of backfill increases. Designers verify the appropriate diameter of each blanking pipe 8 through experiments. If the amount of backfill is too large, the diameter is reduced; if the amount of backfill is too small, the diameter is increased until the diameter of the blanking pipe 8 matches the project objectives.)

[0087] According to the actual size of the middle axillary corner part 3 of the current project, the staff replaces the fixed scraper 9 and the movable support plate 10 with the size model that matches the current project;

[0088] The second is loading;

[0089] The preparation work specifically involves installing the storage hopper 4 astride the pipe 1 and filling it with backfill. At this time, the backfill is transported to the armpit corner area 3 through the drop pipes 8 of each drop vibration mechanism. The backfill in contact with the base layer 2 has friction with the base layer 2, and there is also friction between the backfill particles. After the backfill fills the armpit corner area 3 and overflows, the backfill closes the opening of the drop pipe 8. Under the action of friction (the backfill newly dropped out of the drop pipe 8 needs to push away the backfill outside before it can fall, and when the backfill reaches a certain amount, the gravity factor of the backfill falling at the outlet of the drop pipe 8 and the friction factor reach a balance, and the drop will automatically stop).

[0090] The third is initialization;

[0091] The staff manually pulls outward the movable support plate 10 of each blanking and vibrating mechanism, and after releasing the hand, the movable support plate 10 is pressed from the outside to the inside on the backfill material at the armpit corner 3;

[0092] The staff manually pulls out the anthropomorphic pressure plate 18 and the vibrator 12 until the upper return spring 16 and the lower return spring 17 reach the maximum tension position;

[0093] The fourth is the integrated paving and compaction operation;

[0094] The driving device and the vibrators 12 of each blanking and vibrating mechanism are started (a preferred solution is to respectively add a wireless communication module and a remote controller to the driving device and the vibrator 12 so as to realize remote start). The driving device drives the pipeline corner cushion layer paving and compacting integrated device to move forward along the pipeline 1. During the movement, the material in the storage hopper 4 is continuously fed into the corner portion 3 through the blanking pipes 8 of each blanking and vibrating mechanism.

[0095] In each blanking and vibrating mechanism, the fixed scraper 9 adjacent to the rear of the blanking pipe 8 automatically scrapes and levels the backfill material fed into the axillary corner 3 as it moves forward, and the movable support plate 10 hinged to the fixed plate performs preliminary compaction on the backfill material;

[0096] The vibrator 12 behind the movable support plate 10 drives the vibrating plate 20 to vibrate and compact the backfill material at the axillary corner 3. During the backfill compaction process, as the backfill material is compacted to a higher and higher degree, the upper return spring 16 and the lower return spring 17 retract and press the vibrator 12 deep into the axillary corner 3 through the anthropomorphic pressing plate 18, thereby preventing the vibrating plate 20 from losing the vibrating and compacting effect due to a virtual contact with the backfill material at the axillary corner 3.

[0097] In the process of moving forward, the backfill is continuously spread forward from the left and right sides of the pipeline 1 to the axillary corner portion 3 and vibrated and compacted until the backfill spreading and compaction work of the axillary corner portion 3 of the predetermined pipeline 1 section is completed or the storage hopper 4 needs to be charged; when the storage hopper 4 needs to be charged, the driving device is stopped first, and then the second step, i.e., the loading step, is used again to execute this method of use.

[0098] The driving device is a variable frequency motor. During the fourth step, if the paving thickness of each layer of backfill material does not match the predetermined thickness, the forward speed of the pipeline corner pad paving and compacting integrated device is adjusted by adjusting the working frequency of the variable frequency motor, and then the paving thickness of each layer of backfill material is adjusted to match the predetermined thickness (the faster the forward speed, the thinner the paving layer, and the slower the forward speed, the relatively thicker the paving layer; the extreme thickness is the thickness reached in the second step, i.e., the loading step).

[0099] During the fourth step, if other construction parameters do not match the predetermined goals, the pipeline corner cushion layer paving and compaction integrated device and construction parameters are adjusted to achieve the predetermined engineering goals.

[0100] The method of use of the present invention is easy to operate, and the paving and vibration work is carried out simultaneously on the left and right sides of the pipeline 1, realizing integrated mechanized paving and compaction operations. Compared with the previous manual paving and vibration work performed separately on one side of the pipeline 1, it greatly saves manpower and greatly improves work efficiency.

[0101] The method of use of the present invention is simple and reliable. After initialization, the method can be continued until the scheduled paving and compaction work is completed or until the material needs to be added, significantly improving work efficiency compared to the past. The present invention can efficiently and high-quality complete the backfill paving and compaction work at the axilla corner 3 of the pipeline 1, avoiding the possibility of poor backfill quality at the axilla corner 3 of the pipeline 1 causing damage to the pipeline 1 later.

[0102] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An integrated device for paving and compacting the pipe corner cushion layer. The pipe is supported on the base layer, and corners are formed between the left and right sides of the pipe and the base layer. It is characterized by: The hopper is saddle-shaped and has a downward-facing straddling groove that matches the pipe. The hopper is connected to running wheels above the pipe via a wheel frame. The running wheels are supported downward on the top of the pipe, and a gap is provided between the straddling groove of the hopper and the pipe wall. At least one running wheel is connected to a driving device, which is an electric motor. Multiple running wheels are symmetrically provided on the front and rear sides of the hopper. The storage hoppers on the left and right sides of the pipeline are respectively connected downwards with a blanking and vibrating mechanism, and the blanking and vibrating mechanisms are symmetrically arranged on the left and right sides of the pipeline; The blanking and vibrating mechanism includes a blanking device for conveying backfill material to the axillary corners and a vibrating device for vibrating the backfill material at the axillary corners; The vibrating device is located behind the blanking device; The vibrating device includes a vibrating fixed arm and a vibrator; the vibrating fixed arm is fixedly connected to the storage hopper upward, and an inclined through hole with a higher outer side and a lower inner side is provided on the vibrating fixed arm along the inner and outer directions; The outer surface of the vibrating fixed arm is fixedly connected to an upper vibrating mounting plate above the inclined through hole, and the outer surface of the vibrating fixed arm is fixedly connected to a lower vibrating mounting plate below the inclined through hole. The upper vibrating mounting plate is upwardly and outwardly connected to an upper return spring, and the lower vibrating mounting plate is upwardly and outwardly connected to a lower return spring. An anthropomorphic pressure plate is fixedly connected between the outer ends of the upper return spring and the lower return spring. The vibrator passes through the inclined through-hole, the inner end of the vibrator is connected to a vibrating rod downwardly and inwardly, and the end of the vibrating rod is fixedly connected to a vibrating plate; the outer end of the vibrator is located above the outer side of the inclined through-hole and connected to the anthropomorphic pressure plate; the vibrating plate is perpendicular to the vibrating rod and its inclination angle is the same as the predetermined axillary angle slope; The extension directions of the upper vibration mounting plate, the lower vibration mounting plate, the upper return spring, and the lower return spring are all parallel to the center line of the inclined through hole, and the upper return spring, the lower return spring, and the anthropomorphic pressure plate form an anthropomorphic vibration pressing structure; Taking the forward direction during construction as the forward direction, each of the left and right sides of the pipeline is equipped with two sets of front and rear blanking and vibrating mechanisms, namely the front blanking and vibrating mechanism and the rear blanking and vibrating mechanism; The bottom opening of the blanking pipe in the front blanking and vibrating mechanism is located in the middle and lower part of the axillary corner, and is used to transport the lower layer of backfill material to the middle and lower part of the axillary corner; the height of the vibrating plate in the front blanking and vibrating mechanism matches the predetermined height of the lower layer of backfill material; The bottom end opening of the blanking pipe of the rear blanking vibration mechanism is located in the upper middle part of the armpit corner, and is used to transport the upper layer of backfill material to the top of the lower layer of backfill material in the armpit corner; the height of the vibration plate in the rear blanking vibration mechanism matches the total height of the predetermined upper layer of backfill material and the lower layer of backfill material.

2. The integrated device for paving and compacting the pipeline corner cushion layer according to claim 1 is characterized in that: The material dropping device includes a material dropping pipe, the upper end of which is in communication with the storage hopper, the direction pointing to the vertical plane where the center line of the pipeline is located is considered as the inward direction, the material dropping pipe extends downward and inward, and the lower end of the material dropping pipe has an opening and the opening is directed toward the armpit corner; Taking the forward direction during construction as the forward direction, a fixed scraper is fixedly connected to the rear side of the lower end of the drop tube, and the inner end of the fixed scraper is hinged to a movable support plate through a spring hinge; in a free state without external force, the fixed scraper and the movable support plate are 180 degrees.

3. The integrated device for paving and compacting the pipeline corner cushion layer according to claim 2 is characterized in that: The slope of the vibrating plate of the front blanking vibrating mechanism is 60 degrees, and the slope of the vibrating plate of the rear blanking vibrating mechanism is 30 degrees.

4. The integrated device for paving and compacting the pipeline corner cushion layer according to claim 2, characterized in that: There are three traveling wheels symmetrically arranged on the front and back sides of the storage hopper. Among the three traveling wheels on the front side of the storage hopper, the traveling wheel located in the middle is located at the top of the pipeline, and the two traveling wheels on the left and right sides are symmetrically arranged, and the central angle α formed by the two and the center of the pipeline is 120 degrees.

5. The method for using the integrated device for paving and compacting the pipeline corner cushion layer according to any one of claims 2 to 4 is characterized in that Follow these steps: The first is preparation. Before the preparation work, when backfilling in layers according to the project objectives, the amount of backfill in each layer, that is, the thickness of backfill, should be set accordingly. The diameter of the blanking pipe of the blanking and vibrating mechanism should be selected accordingly. According to the actual size of the middle and lower corners of the current project, the staff replaced the fixed scraper and movable support plate with models that match the size of the current project; The second is loading; The preparation work specifically involves installing the storage hopper astride the pipeline and filling it with backfill. At this time, the backfill is transported to the axilla area through the drop pipes of each drop vibrating mechanism. The backfill in contact with the base layer has friction with the base layer, and there is also friction between the backfill particles. After the backfill fills the axilla area and overflows, the backfill seals the opening of the drop pipe, and the drop automatically stops due to the action of friction. The third is initialization; The staff manually pulls outward the movable support plates of each blanking and vibrating mechanism, and after releasing the plates, they press from the outside to the inside on the backfill material at the armpit corners; The staff manually pulls out the anthropomorphic pressure plate and vibrator until the upper and lower return springs reach their maximum tension positions; The fourth is the integrated paving and compaction operation; The driving device and the vibrators of each blanking and vibrating mechanism are started. The driving device drives the pipeline axil corner cushion layer paving and compacting integrated device to move forward along the pipeline. The material in the storage hopper is continuously fed into the axil corner through the blanking pipes of each blanking and vibrating mechanism during the process of moving forward. In each blanking and vibrating mechanism, the fixed scraper adjacent to the rear of the blanking pipe automatically scrapes and levels the backfill material sent into the axil corner during its advancement, and the movable support plate hinged to the fixed plate performs preliminary compaction on the backfill material. The vibrator behind the movable support plate drives the vibrating plate to vibrate and compact the backfill material in the axilla corner area. During the backfill material compaction process, as the backfill material becomes more and more compacted, the upper return spring and the lower return spring retract and press the vibrator deep into the axilla corner area through the anthropomorphic pressure plate to prevent the vibrating plate and the backfill material in the axilla corner area from losing the vibration and compaction effect due to a virtual connection. In the process of moving forward, the backfill is continuously spread forward from the left and right sides of the pipeline to the armpit corners and vibrated and compacted until the backfill spreading and compaction work at the armpit corners of the predetermined pipeline section is completed or the storage hopper needs to be filled; when the storage hopper needs to be filled, the driving device is stopped first, and then the second step, i.e., the loading step, is used again to execute this method of use.

6. The method of use according to claim 5, characterized in that: The driving device is a variable frequency motor. During the fourth step, if the paving thickness of each layer of backfill material does not match the predetermined thickness, the forward speed of the pipeline corner cushion layer paving and compaction integrated device is adjusted by adjusting the working frequency of the variable frequency motor, and then the paving thickness of each layer of backfill material is adjusted to match the predetermined thickness.

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