Pipe ditch excavating equipment for construction of biomass central heating pipe network

Abstract

The invention relates to the related technical field of pipe ditch excavating equipment, discloses pipe ditch excavating equipment for construction of a biomass central heating pipe network, and aims to solve the problems that the advancing direction of a whole machine is difficult to accurately judge, advancing is blocked and the like due to soil accumulation. In addition, the adjusting baffle is pushed to abut against the ground all the time through the elastic force of the adjusting spring, and when the base conveys soil to the front path of the base, the soil is conveyed to the front path through the mud conveying channel formed by the mud baffle and the adjusting baffle, so that the mud is conveyed to the front path through the mud conveying channel. The soil is conveyed upwards and finally thrown out from the high portion to the side portion, it is guaranteed that the advancing path of the shaft frame is not blocked by the soil, and the effects of whole machine advancing guiding and soil accumulation preventing are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to pipe trench excavation equipment, and in particular to a pipe trench excavation equipment for construction of a biomass centralized heating pipe network. Background Art

[0002] As a crucial form of clean energy utilization, biomass district heating systems play a key role in promoting the coordinated development of sustainable energy use and environmental protection. Pipeline network construction is an essential and crucial step in the system's construction. It not only prioritizes efficiency to ensure timely and high-quality project completion, ensuring rapid commissioning and profitability, but also prioritizes ecological protection to minimize disruption and damage to the surrounding ecosystem, ultimately achieving a harmonious coexistence between economic development and ecological conservation. Trench excavation equipment is a key piece of equipment throughout the pipeline network installation process. Its primary task is to precisely create trenches in specific locations, creating optimal conditions for subsequent pipeline installation and ensuring smooth completion. The performance, ease of operation, and environmental friendliness of trench excavation equipment directly impact the overall quality and efficiency of pipeline network construction.

[0003] A search revealed that patent publication number CN222314105U proposes a cable trench excavation device. Specifically, it cleverly supports a telescopic assembly above the crossbar, creating a stable structural layout. When the mounting frame begins to move, driven by the propulsion device, the drive unit is activated synchronously, driving the toothed disc to perform a rotational excavation operation. Simultaneously, once the telescopic assembly is activated, it begins to repeatedly extend and retract. This rhythmic retraction and retraction pushes the connecting block and push plate inside the protective cover to extend. As the push plate continues to extend, it repeatedly penetrates deeper into the toothed plate, forcefully pushing out clods of soil accumulated by the toothed plate during the excavation process. Furthermore, as the toothed plate continues to rotate and exerts thrust on the push plate, the connecting spring, with its unique telescopic properties, provides elastic support for the push plate. This elastic support allows the push plate to flexibly change its support state as it is retracted by the telescopic assembly, without hindering the continued rotation of the toothed plate while ensuring the stable operation of the entire device. Through such repeated operations, soil blocks can be continuously cleared out, effectively preventing soil blocks generated during the excavation process from continuously falling into the trench, thereby avoiding the adverse effects of soil block accumulation on the excavation quality and operation efficiency of the cable trench.

[0004] However, there are still some urgent problems to be solved in the application of this equipment. On the one hand, due to the inherent limitations of the shape of the push plate, in actual operation, it is impossible to push out all the soil attached to the digging teeth. Some soil will always remain, affecting the cleanliness of the trench. On the other hand, the front of the protective cover needs to maintain a certain distance from the ground. This is to ensure that the technical device as a whole can move forward smoothly and ensure the continuity of the excavation work. However, this design also brings new problems. After the digging claws dig out the soil, they will form an accumulation in the direction of the forward movement of the tooth disc. This accumulated soil will not only interfere with the construction workers' accurate judgment of the actual position of the digging claws, making it difficult for them to accurately grasp the exact forward path; in addition, the obstruction of the soil will cause the excavation resistance to increase significantly when the whole machine moves forward, and may even cause repeated excavation, greatly reducing excavation efficiency and increasing construction costs and time. Summary of the Invention

[0005] The present invention proposes a trench excavation equipment for the construction of a biomass centralized heating pipeline network, which has the advantages of forward guidance and soil accumulation prevention, and can effectively solve the problems mentioned in the above background technology, such as the difficulty in accurately judging the forward direction of the whole machine and the obstruction of forward movement caused by soil accumulation.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a pipe trench excavation equipment for the construction of a biomass centralized heating pipeline network, comprising: an axle frame, a digging wheel with digging claws installed in the middle, the digging claws are used to dig the ground; a driving gear is fixedly installed on the side of the digging wheel; a mudguard is fixed on the side of the axle frame, and the bottom end of the mudguard is inserted into the ground in front of the axle frame. The part where the mudguard is inserted into the ground is the area actually excavated by the digging wheel, which makes it convenient for construction personnel to accurately grasp the actual excavation area of ​​the digging wheel.

[0007] Furthermore, an adjustment baffle is movably installed on the outer curved surface of the fender, and an adjustment spring is provided between the adjustment baffle and the outer portion of the fender. The adjustment baffle is pressed against the ground and moves forward with the entire machine to avoid soil accumulation on the forward path of the axle frame.

[0008] Furthermore, a telescopic rod is fixedly installed on the inner side of the digging wheel, and the two telescopic rods are movably installed on a base. A return spring located on the outer side of the telescopic rod is connected between the base and the digging wheel. A shifting inclined portion is provided at the end of the fender and above the digging wheel. When the digging claw passes through the shifting inclined portion, it is affected by the arc surface and causes the base to move radially along the digging wheel. The digging claw extends relatively from the side of the digging wheel and throws the soil to one side of the groove.

[0009] Furthermore, there are multiple bases, and the multiple bases are arranged in a circular shape with equal angles.

[0010] Furthermore, the transposition inclined portion is an arc-shaped surface.

[0011] Furthermore, the original lengths of the return springs on adjacent bases are different, so that the bases can extend relative to each other along the end of the digging wheel, and the extension directions between the two adjacent bases are different; when the side of the base moves against the side of the groove, the base can squeeze the soil on the side of the groove.

[0012] Furthermore, a return ring frame is fixedly installed on the outer side of the shaft frame, and a return groove is opened in the middle of the base. The return ring frame is inserted into the return groove to align the digging claw with the outer side of the digging wheel.

[0013] The present invention has the following beneficial effects: The present invention provides a trench excavation device for biomass centralized heating network construction. A fender is installed outside the axle frame, in the path of the digging wheel, and is inserted into the ground. This design clearly and accurately indicates the axle frame's path, ensuring the device's stable movement along the intended route during excavation operations, effectively avoiding construction problems caused by path deviation.

[0014] Furthermore, the spring force of the adjustment spring ensures that the adjustable baffle always rests against the ground, creating a stable operating state. During operation, as the digging claws convey excavated soil to the path ahead, the fender and the adjustment baffle together form a soil conveying channel. This channel transports soil upward along a specific trajectory and ultimately ejects it to the side, ensuring that the axle frame's forward path is free of soil accumulation and obstruction. This achieves the dual significant effects of guiding the machine forward and preventing soil accumulation, significantly improving construction efficiency and work quality.

[0015] Looking further, the overall structure of the adjustment baffle is arc-shaped. Utilizing the elastic force of the adjustment spring, the end of the adjustment baffle can always be in contact with the ground. In the process of the shaft frame driving the adjustment baffle forward, good contact and stable operation of the adjustment baffle with the ground are guaranteed. More importantly, when the front end of the adjustment baffle encounters an obstacle, due to the special shape of its arc-shaped outer portion, a torque is generated that forces the adjustment baffle to deflect upward, allowing the adjustment baffle to automatically deflect upward by a certain angle, thereby avoiding the obstacle. Therefore, the adjustment baffle can not only effectively prevent mud from accumulating on the forward path of the shaft frame and affecting the normal progress of the equipment, but also, based on its unique arc-shaped structure, has obstacle avoidance capabilities, greatly enhancing the practicality and adaptability of the equipment in complex construction environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0017] The present invention can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall external front three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall external back three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the overall front plan structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the perspective of middle A; Figure 5 Schematic diagram of the positions of the components and their three-dimensional structure on the fender of the present invention; Figure 6 This is a schematic diagram of the internal three-dimensional structure of the digging wheel of the present invention; Figure 7 Schematic diagram of the structural positions and three-dimensional structure of the base of the present invention; Figure 8 This is a schematic diagram of the state of the present invention during excavation.

[0018] In the figure: 1. shaft frame; 2. digging wheel; 3. base; 300. return groove; 301. telescopic rod; 302. return spring; 303. digging claw; 4. mudguard; 400. shifting bevel; 5. adjustment baffle; 501. adjustment spring; 6. return ring frame; 7. driving gear. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 It can be seen that the axle frame 1 serves as the supporting part of the entire device, and can be fixedly connected to the agricultural machinery using the flange at its end. The agricultural machinery only needs to provide the axle frame 1 with power for movement in four directions: up, down, left and right. For actual agricultural machinery, it can be selected independently according to the actual environment.

[0021] A digging wheel 2 is movably mounted on a bearing in the middle of the shaft frame 1, and a digging claw 303 is provided on the outer side of the digging wheel 2 for digging soil. To drive the digging wheel 2, a drive gear 7 is fixedly mounted on the side of the digging wheel 2. The drive gear 7 meshes with the output end of a power element, such as the output end of a gearbox, to provide rotational power for the digging wheel 2. The arrangement of the drive gear 7 is not limited to this, and a transmission element such as a sprocket or pulley can also be used.

[0022] During the construction of a biomass heating network, a trench is created using a digging wheel 2, within which the heating network is subsequently laid. As described above, the agricultural machine moves the axle frame 1 to the trenching location, and the power element rotates the drive gear 7, causing the digging wheel 2 to drive the digging claw 303 to dig the ground. Grooves are left in the area where the digging wheel 2 passes, facilitating the laying of the network.

[0023] However, in actual use, the continuous digging of the digging claws 303 will cause soil to accumulate on the path of the shaft frame 1. This factor will interfere with the construction workers' accurate judgment of the actual position of the digging claws, making it difficult for them to grasp the accurate forward path. In addition, the accumulated soil will significantly increase the digging resistance when the whole machine moves forward, and may even cause repeated digging, greatly reducing the digging efficiency. In order to prevent such problems from affecting the progress of construction, Figure 1 、 Figure 3 and Figure 5 It can be seen that a fender 4 is fixedly mounted on the side of the axle frame 1. The fender 4 is fan-shaped, and the bottom end of the fender 4 can be inserted into the ground in front of the axle frame 1. Figure 1 As can be seen in the figure, when the end of the fender 4 is inserted into the ground, its thickness is relatively thin and does not seriously hinder the forward movement of the spindle frame 1. Moreover, because the area where the fender 4 is inserted into the ground is the area where the digging wheel 2 is actually digging, the construction personnel can accurately determine the forward movement path of the digging wheel 2 based on the determination of the digging position of the digging wheel 2 by the fender 4.

[0024] On this basis, an adjustment baffle 5 is movably installed on the outer curved surface of the fender 4. Specifically, the two sides of the adjustment baffle 5 are restricted by the inner side of the fender 4, so that the adjustment baffle 5 can only slide along the outer curved surface of the fender 4. A positioning arc groove is provided in the adjustment baffle 5, and the bolt passes through the arc groove and is installed on the fender 4 to ensure that the adjustment baffle 5 will not detach from the fender 4. An adjustment spring 501 is provided between the adjustment baffle 5 and the outer side of the fender 4. Under normal circumstances, the end of the adjustment baffle 5 is always pushed to the ground by the elastic force of the adjustment spring 501. Based on Figure 8 As shown, when the entire machine moves forward, the adjustment baffle 5 is pushed against the ground by the elastic force of the adjustment spring 501 and moves forward with the entire machine, ensuring that the soil excavated by the digging claws 303 does not accumulate in front of the entire machine. The soil is transported upward along the inner cavity of the fender 4 until it reaches the highest point, where it is then thrown to one side of the trench according to subsequent measures. During this process, the adjustment baffle 5 can always touch the ground and move forward with the entire machine. Even if the adjustment baffle 5 encounters an obstacle during its forward movement, if the height of the obstacle is relatively lower than the central axis of the shaft frame 1, the curved surface on the outer side of the adjustment baffle 5 will cause it to deflect upward and compress the adjustment spring 501. As the entire machine continues to move forward, the adjustment baffle 5 will eventually be able to overcome the obstacle.

[0025] In terms of soil removal, this application proposes a new innovation. Without affecting the rotation and excavation of the digging wheel 2, the digging claws 303 can move radially along the digging wheel 2, ensuring that the excavated soil can be discharged to one side of the trench during the rotation of the digging claws 303. This not only prevents the excavated soil from falling back into the trench, but also because the excavated soil needs to be backfilled after the heating pipe network is laid. The soil removal process proposed in this application mainly accumulates the soil on one side of the trench. After the pipe network is laid, the soil backfill can be completed by simply pushing it along the side of the trench using a bulldozer or other machine.

[0026] For the actual arrangement of the digging claws 303, according to the attached Figure 1 、 Figure 2 、 Figure 6 and Figure 7 It can be clearly seen that a telescopic rod 301 arranged relatively parallel to the central axis of the digging wheel 2 is fixedly installed inside the digging wheel 2, and every two telescopic rods 301 are movably installed with a base 3. Figure 3 It can be clearly seen that there are multiple bases 3, and the multiple bases 3 are arranged in a circular shape with equal angles. A return spring 302 located on the outer side of the telescopic rod 301 is connected between the base 3 and the digging wheel 2. When the base 3 moves radially along the digging wheel 2, the telescopic rod 301 can be extended / contracted while the return spring 302 is stretched / compressed. Correspondingly, from Figure 3 and Figure 5 As can be seen in the figure, a shifting bevel 400 is provided at the end of the fender 4, located above the digging wheel 2. This bevel 400 is curved. When the digging claw 303 moves along the inside of the fender 4, it pushes the excavated soil upward. As the digging claw 303 passes the shifting bevel 400, the curved surface causes the base 3 to move radially along the digging wheel 2 and extend from the side of the digging wheel 2. At this time, as the digging wheel 2 drives the digging claw 303 to rotate continuously, the soil pushed by the digging claw 303 moves synchronously along the curved surface and is ultimately ejected to one side of the trench. As the digging claw 303 extends, the excavated soil in the trench is deposited on one side of the trench, not only ensuring a relatively clean interior but also facilitating subsequent backfilling. Finally, as the digging wheel 2 drives the base 3 to rotate continuously, when the base 3 passes the transposition inclined portion 400, it is restored by the elastic force of the return spring 302 and the guiding effect of the telescopic rod 301, so that the base 3 returns to the outer side of the digging wheel 2, and as the digging wheel 2 rotates, the soil excavation work is carried out again.

[0027] On this basis, the original working length of the reset spring 302 is adjusted so that the original lengths of the reset springs 302 on adjacent bases 3 are different, such as Figure 3 and Figure 4As shown, when the base 3 passes the transposition bevel 400, it can move to the right along the transposition bevel 400 to complete the action of throwing the soil out. After the base 3 passes the transposition bevel 400, it is restricted by the elastic reset effect of the reset spring 302 and the different original extension lengths of the reset spring 302 on the base 3, so that the base 3 extends relatively along the end of the digging wheel 2, and the extension directions of the two adjacent bases 3 are different. The advantage of this design is that in actual application, Figure 7 It can be clearly seen that the base 3 is provided with a bevel on the corner, combined with Figure 8 As shown, when the base 3 detaches from the transposition slope 400 and begins to enter the trench, it will first enter the trench that has been excavated. At this time, when the base 3 is extended along the end of the digging wheel 2, the side of the base 3 will move relative to the side of the trench, and during the movement, the base 3 is always subjected to the elastic force of the reset spring 302. This elastic force forces the base 3 to always squeeze the side of the trench, and this squeezing makes the soil on both sides of the trench more compact, thereby reducing the risk of trench collapse.

[0028] Moreover, as the base 3 rotates continuously, in order to ensure the accuracy of the excavation path, when the digging claw 303 is about to move to the ground to be excavated, the return ring frame 6 with an arc structure fixedly installed on the outer side of the shaft frame 1 is inserted into the return groove 300 opened in the middle part of the inner side of the base 3, so that the base 3 drives the digging claw 303 to align with the outer side of the digging wheel 2, ensuring that the digging claw 303 can accurately dig the ground. Figure 7 As can be seen in the figure, the front end of the return groove 300 is provided with symmetrically arranged inclined surfaces. When the return ring 6 contacts the inclined surfaces, the base 3 is easily reset. Furthermore, after the base 3 moves to the inside of the fender 4, it gradually separates from the return ring 6, ensuring that the digging claws 303 that subsequently enter the inside of the fender 4 can discharge soil through the shifting inclined portion 400. However, after the base 3 separates from the return ring 6, the digging claws 303 are restricted by the soil channel inside the fender 4 and are still unable to move freely in the radial direction of the digging wheel 2. Until the digging claws 303 separate from the shifting inclined portion 400, the separation between the shifting inclined portion 400 and the digging claws 303 will also release the restriction on their free movement.

Claims

1. A trench excavation equipment for biomass centralized heating pipe network construction, characterized in that: include: A shaft frame (1) is provided with a digging wheel (2) provided with a digging claw (303) in the middle thereof, wherein the digging claw (303) is used for digging the ground; a driving gear (7) is fixedly installed on the side of the digging wheel (2); The fender (4) is fixed to the side of the shaft frame (1), and the bottom end of the fender (4) is inserted into the ground in front of the shaft frame (1). The part where the fender (4) is inserted into the ground is the area actually excavated by the digging wheel (2), which makes it easy for construction workers to accurately grasp the actual excavation area of ​​the digging wheel (2).

2. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 1, characterized in that: An adjusting baffle (5) is movably mounted on the outer arc surface of the fender (4), and an adjusting spring (501) is provided between the adjusting baffle (5) and the outer portion of the fender (4). The adjusting baffle (5) rests against the ground and moves forward with the entire machine to prevent soil from accumulating on the forward path of the axle frame (1).

3. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 1, characterized in that: A telescopic rod (301) is fixedly installed inside the digging wheel (2), and the two telescopic rods (301) are movably installed on a base (3). A return spring (302) located on the outer side of the telescopic rod (301) is connected between the base (3) and the digging wheel (2). A transposition inclined portion (400) is provided at the end of the fender (4) and above the digging wheel (2). When the digging claw (303) passes through the transposition inclined portion (400), it is affected by the arc surface and causes the base (3) to move radially along the digging wheel (2). The digging claw (303) extends relatively from the side of the digging wheel (2) and throws soil to one side of the groove.

4. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 3, characterized in that: There are multiple bases (3), and the multiple bases (3) are arranged in a ring at equal angles.

5. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 4, characterized in that: The transposition inclined portion (400) is an arc-shaped surface.

6. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 3, characterized in that: The original lengths of the return springs (302) on adjacent bases (3) are different, so that the bases (3) are relatively extended along the ends of the digging wheel (2), and the directions of extension between two adjacent bases (3) are different; When the side of the base (3) moves against the side of the groove, the base (3) can squeeze the soil on the side of the groove.

7. The trench excavation equipment for biomass centralized heating pipe network construction according to claim 6, characterized in that: A return ring frame (6) is fixedly mounted on the outer side of the shaft frame (1), and a return groove (300) is provided in the middle of the base (3). The return ring frame (6) is inserted into the return groove (300) to align the digging claw (303) with the outer side of the digging wheel (2).

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