A trenching device for biomass central heating pipe network construction

Abstract

The present application relates to the technical field of trench excavating equipment, and discloses a trench excavating equipment for biomass central heating pipe network construction, in order to solve the problems of difficult accurate judgment of the forward direction of the whole machine and forward obstruction caused by soil accumulation, a mud guard is installed on the outer side of the shaft frame and located on the forward path of the digging wheel, and the mud guard is inserted into the ground, thereby clearly indicating the forward path of the shaft frame, and furthermore, the adjusting spring elastic force is used to push the adjusting baffle to always abut against the ground, when the base transports soil to the front path, the soil is transported upward and finally thrown from the high part to the side part through the soil transportation channel formed by the mud guard and the adjusting baffle, so that the forward path of the shaft frame is not blocked by soil, and the effects of forward guiding of the whole machine and soil accumulation prevention are realized.

Description

Technical Field

[0001] This invention relates to the technical field of trench excavation equipment, and in particular to trench excavation equipment for constructing biomass centralized heating pipeline networks. Background Technology

[0002] Biomass centralized heating systems, as a crucial form of clean energy utilization, play a key role in promoting the coordinated development of sustainable energy use and environmental protection. In the construction of this system, pipeline construction is an indispensable and critical link. It requires not only careful consideration of construction efficiency to ensure timely and high-quality project completion for rapid operation and benefit realization, but also a high degree of emphasis on ecological protection, minimizing interference and damage to the surrounding ecological environment and achieving harmonious coexistence between economic development and ecological protection. In the entire pipeline laying process, trench excavation equipment is the core equipment. Its main task is to precisely dig trenches in specific locations, creating favorable conditions for subsequent pipeline laying and ensuring its smooth completion. The performance, ease of operation, and environmental friendliness of the trench excavation equipment directly affect the overall quality and efficiency of pipeline construction.

[0003] A search revealed a patent with publication number CN222314105U, which discloses a cable trench excavation device. Specifically, it cleverly supports a telescopic assembly above a crossbar, forming a stable structural layout. When the mounting frame begins to move under the drive of the propulsion device, the drive unit starts simultaneously, driving the toothed disc to rotate and excavate. At the same time, once the telescopic assembly is activated, it begins to repeatedly extend and retract. Through this rhythmic extension and retraction, it pushes the connecting block and the pusher plate to extend inside the protective cover. As the pusher plate continues to extend, it can repeatedly penetrate deep into the inside of the toothed plate, powerfully pushing out the soil clods accumulated during excavation. Moreover, when the toothed plate continues to rotate and exerts thrust on the pusher plate, the connecting spring, with its unique telescopic properties, provides elastic support to the pusher plate. This elastic support allows the pusher plate's support state to change flexibly when it is retracted by the telescopic assembly, ensuring that it does not hinder the continued rotation of the toothed plate while guaranteeing the stable operation of the entire device. Through this repeated operation, soil clods can be continuously cleared out, effectively preventing soil clods generated during the excavation process from falling into the trench, thereby avoiding adverse effects on the excavation quality and work efficiency of the cable trench due to soil accumulation.

[0004] However, the equipment still faces some unresolved issues in its application. Firstly, due to the inherent limitations of the push plate's shape, it cannot completely remove all the soil attached to the digging teeth during actual operation, leaving some residue that affects the cleanliness of the trench. Secondly, a certain distance must be maintained between the front of the protective cover and the ground to ensure the device can move forward smoothly and maintain the continuity of the excavation work. However, this design also introduces new problems: after the digging teeth excavate the soil, it accumulates in the direction the toothed disc moves. This accumulated soil not only interferes with the operator's accurate judgment of the digging teeth's actual position, making it difficult to precisely determine the forward path, but also significantly increases the digging resistance as the machine moves forward, potentially leading to repeated digging, greatly reducing digging efficiency and increasing construction costs and time. Summary of the Invention

[0005] This invention proposes a trench excavation device for the construction of biomass centralized heating pipelines, which has the advantages of forward guidance and soil accumulation prevention, and can effectively solve the problems mentioned in the background art, 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 objectives, the present invention adopts the following technical solution: a trench excavation device for biomass centralized heating pipeline construction, comprising: a shaft frame, a digging wheel with digging claws installed in the middle, the digging claws being used for digging the ground; a drive gear fixedly installed on the side of the digging wheel; and a mudguard fixed to the side of the shaft frame, with the bottom end of the mudguard inserted into the ground in front of the shaft frame, the part of the mudguard inserted into the ground being the actual excavation area of ​​the digging wheel, which facilitates construction personnel to accurately grasp the actual excavation area of ​​the digging wheel.

[0007] Furthermore, an adjustable baffle is movably installed on the outer arc surface of the mudguard. An adjusting spring is provided between the adjusting baffle and the outer side of the mudguard. The adjusting baffle touches the ground and moves forward with the whole machine to avoid the accumulation of soil on the forward path of the shaft frame.

[0008] Furthermore, a telescopic rod is fixedly installed on the inner side of the digging wheel. Two telescopic rods are movably installed with a base. A return spring located on the outer side of the telescopic rod is connected between the base and the digging wheel. A displacement ramp is provided at the end of the mudguard and above the digging wheel. When the digging claw passes through the displacement ramp, the base will move radially along the digging wheel due to the influence of the arc surface. The digging claw will extend from the side of the digging wheel and throw the soil to one side of the trench.

[0009] Furthermore, there are multiple bases, and these bases are arranged in a ring at equal angles.

[0010] Furthermore, the transposition slope is curved.

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

[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:

[0014] This invention provides a trench excavation device for constructing biomass centralized heating pipelines. The device has a mudguard installed on the outside of the shaft frame, along the path of the excavating wheel, and the mudguard is inserted into the ground. This design provides clear and accurate guidance for the shaft frame's path, ensuring the device can move stably along the predetermined route during excavation, effectively avoiding construction problems caused by path deviation.

[0015] Furthermore, by adjusting the spring force, the adjusting baffle is always kept in contact with the ground, creating a stable working state. During equipment operation, as the excavator claw transports the excavated soil to its forward path, the mudguard and adjusting baffle together form a soil transport channel. Under the action of this channel, the soil is transported upward along a specific trajectory and eventually thrown out to the side from a higher position, thus ensuring that the forward path of the shaft frame is not obstructed by soil accumulation. This achieves the dual significant effects of guiding the machine's forward movement and preventing soil accumulation, greatly improving construction efficiency and work quality.

[0016] Looking further, the overall structure of the adjusting baffle is arc-shaped. Utilizing the spring force of the adjusting spring, the end of the adjusting baffle remains in contact with the ground, ensuring good contact and stable operation as the shaft propels the baffle forward. More importantly, when the front of the adjusting baffle encounters an obstacle, the special shape of its arc-shaped outer portion generates a torque that forces the baffle to deflect upwards, allowing it to automatically deflect upwards at a certain angle and avoid the obstacle. Therefore, the adjusting baffle not only effectively prevents soil from accumulating on the shaft's path, thus avoiding obstruction, but also, due to its unique arc-shaped structure, possesses obstacle avoidance capabilities, greatly enhancing the equipment's practicality and adaptability in complex construction environments. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention.

[0018] The invention will be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0019] Figure 1 This is a three-dimensional view of the overall external front structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall external rear three-dimensional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall frontal planar structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 Diagram from the perspective of A in the middle;

[0023] Figure 5 This is a schematic diagram showing the position and three-dimensional structure of each component on the mudguard of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the excavator wheel of the present invention;

[0025] Figure 7 This is a schematic diagram showing the location and three-dimensional structure of each structure on the base of the present invention;

[0026] Figure 8 This is a schematic diagram of the state during excavation according to the present invention.

[0027] In the diagram: 1. Shaft bracket; 2. Digging wheel; 3. Base; 300. Return groove; 301. Telescopic rod; 302. Return spring; 303. Digging claw; 4. Mudguard; 400. Shifting inclined section; 5. Adjusting baffle; 501. Adjusting spring; 6. Return ring frame; 7. Drive gear. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 and Figure 2 It can be seen that the shaft frame 1, as the supporting part of the whole device, can be fixedly connected to the agricultural machinery by means of the flange at its end. The agricultural machinery only needs to provide power for the shaft frame 1 to move in four directions: up, down, left, and right. For actual agricultural machinery, it can be selected independently according to the actual environment.

[0030] The shaft frame 1 has a digging wheel 2 mounted movably via bearings in the middle, and a digging claw 303 for digging soil is provided on the outer side of the digging wheel 2. The digging wheel 2 is driven by a drive gear 7 fixedly mounted on its side, which meshes with the output end of a power element, such as a gearbox output end, to provide rotational power to the digging wheel 2. The arrangement of the drive gear 7 is not limited to this; it can also be a sprocket or pulley, or other transmission elements.

[0031] During the construction of biomass heating pipelines, digging wheels 2 are used to dig trenches in the ground, and the heating pipelines are then laid in the trenches. As described above, the agricultural machinery moves the axle frame 1 to the trenching position, and the power element drives the drive gear 7 to rotate, thereby causing the digging wheel 2 to drive the digging claw 303 to dig the ground. The area traversed by the digging wheel 2 leaves a trench to facilitate the laying of the pipeline.

[0032] However, in practical applications, the continuous digging by the 303 digger claw causes soil to accumulate along the path of the shaft frame 1. This factor interferes with the construction personnel's accurate judgment of the actual position of the digger claw, making it difficult for them to grasp the accurate forward path. Furthermore, the accumulated soil significantly increases the digging resistance when the machine moves forward, and may even lead to repeated digging, greatly reducing digging efficiency. To prevent such problems from affecting the construction progress, from Figure 1 , Figure 3 and Figure 5 It can be seen that a mudguard 4 is fixedly installed on the side of the axle bracket 1. The mudguard 4 is fan-shaped, and its bottom end can be inserted into the ground in front of the axle bracket 1. Figure 1 As can be seen, when the end of the mudguard 4 is inserted into the ground, its thickness is relatively thin and will not seriously hinder the forward movement of the shaft frame 1. Moreover, since the part of the mudguard 4 that is inserted into the ground is the area actually excavated by the digging wheel 2, the construction personnel can accurately grasp the forward path of the digging wheel 2 by judging the digging position of the digging wheel 2 based on the mudguard 4.

[0033] Based on this, an adjusting baffle 5 is movably installed on the outer arc surface of the mudguard 4. Specifically, the adjusting baffle 5 is restricted on both sides by the inner side of the mudguard 4, so that the adjusting baffle 5 can only slide along the outer arc surface of the mudguard 4. A positioning arc groove is provided in the adjusting baffle 5, and bolts pass through the arc groove and are installed on the mudguard 4 to ensure that the adjusting baffle 5 will not detach from the mudguard 4. An adjusting spring 501 is provided between the adjusting baffle 5 and the outer side of the mudguard 4. Under normal conditions, the adjusting spring 501 pushes the adjusting baffle 5 so that its end always rests against the ground. Figure 8As shown, when the machine moves forward, the adjusting baffle 5 is pushed against the ground by the elastic force of the adjusting spring 501 and moves forward with the machine, ensuring that the soil excavated by the digging claw 303 does not accumulate in front of the machine. It is then conveyed upwards along the inner cavity of the mudguard 4 until the soil reaches a high point, at which point it is thrown to one side of the trench using subsequent methods. During this process, the adjusting baffle 5 remains against the ground and moves forward with the machine. Even if the adjusting 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 outer arc surface of the adjusting baffle 5 will cause it to deflect upwards and compress the adjusting spring 501. As the machine continues to move forward, the adjusting baffle 5 will eventually overcome the obstacle.

[0034] Regarding soil removal, this application proposes a novel innovation. Without affecting the rotation and excavation of the excavator wheel 2, the excavator claw 303 can move radially along the excavator wheel 2, ensuring that the excavated soil is discharged to one side of the trench during the rotation of the claw 303. This not only prevents the excavated soil from falling back into the trench, but also addresses the need for backfilling the excavated soil after the heating pipeline is laid. The soil removal process proposed in this application primarily involves piling the soil on one side of the trench. After the pipeline is laid, backfilling can be completed simply by using bulldozers or other machinery to push the soil along one side of the trench.

[0035] Regarding the actual layout of the 303 excavator claw, according to the attached... Figure 1 , Figure 2 , Figure 6 and Figure 7 It is evident that telescopic rods 301, arranged parallel to their central axis, are fixedly installed on the inner side of the excavator wheel 2. Each pair of telescopic rods 301 is movably installed with a base 3. Figure 3 It is evident that there are multiple bases 3, arranged in a ring at equal angles. A return spring 302 located on the outer side of the telescopic rod 301 connects the base 3 and the digging wheel 2. When the base 3 moves radially along the digging wheel 2, it can extend / retract the telescopic rod 301 while simultaneously stretching / compressing the return spring 302. Correspondingly, from... Figure 3 and Figure 5As can be seen, a shifting ramp 400 is provided at the end of the mudguard 4 and above the digging wheel 2. The shifting ramp 400 has an arc-shaped surface. When the digging claw 303 moves along the inner side of the mudguard 4, it can push the excavated soil upward. When the digging claw 303 passes the shifting ramp 400, the arc surface will cause 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 arc surface and is finally thrown to one side of the trench. Based on the extension of the digging claw 303, the soil excavated in the trench can be piled on one side of the trench, which not only ensures that the inside of the trench is relatively clean, but also facilitates the subsequent backfilling of soil. Finally, as the digging wheel 2 drives the base 3 to rotate continuously, after the base 3 passes the transposition inclined section 400, it is restored by the elastic force of the reset spring 302 and guided by the telescopic rod 301, so that the base 3 returns to the outer side of the digging wheel 2 and continues to dig soil as the digging wheel 2 rotates.

[0036] Based on this, the original working length of the return spring 302 is adjusted so that the original lengths of the return springs 302 on adjacent bases 3 are different, such as... Figure 3 and Figure 4 As shown, when the base 3 passes the transposition slope 400, it can move to the right along the transposition slope 400 to complete the action of throwing the soil outward. After the base 3 passes the transposition slope 400, it is limited by the elastic force of the return spring 302 and the different original extension lengths of the return spring 302 on the base 3, causing the base 3 to extend relative to each other along the end of the digging wheel 2, and the extension directions of adjacent base 3 are different. The advantage of this design is that, in practical applications, from Figure 7 It is clearly visible that there is a slope at the corner of the base 3, combined with Figure 8 As shown, when the base 3 detaches from the transposition inclined section 400 and begins to enter the trench, it will first enter the trench that has already been excavated. At this time, when the base 3 extends along the end of the excavator wheel 2, the side of the base 3 will move relative to the side of the trench. During the movement, the base 3 is always subjected to the elastic force of the return spring 302. This elastic force forces the base 3 to constantly squeeze the side of the trench. This squeezing makes the soil on both sides of the trench more compact, thereby reducing the risk of trench collapse.

[0037] Furthermore, as the base 3 rotates continuously, to ensure the accuracy of the excavation path, when the digging claw 303 is about to move to the ground to be excavated, a return ring 6 with an arc-shaped structure, fixed to the outer side of the shaft frame 1, is inserted into the return groove 300 opened in the middle of the inner side of the base 3. This allows the base 3 to align the digging claw 303 with the outer side of the digging wheel 2, ensuring that the digging claw 303 can accurately excavate the ground. Figure 7As can be seen, the front end of the return groove 300 is provided with symmetrically arranged inclined surfaces. When the return ring 6 abuts against the inclined surface, it facilitates the repositioning of the base 3. Furthermore, after the base 3 moves to the inside of the mudguard 4, the base 3 will gradually detach from the return ring 6, ensuring that the digging claw 303, which subsequently enters the inside of the mudguard 4, can discharge the soil from the shifting inclined section 400. However, after the base 3 detaches from the return ring 6, the digging claw 303 is restricted by the soil channel inside the mudguard 4 and will not move freely radially along the digging wheel 2 until the digging claw 303 detaches from the shifting inclined section 400. The detachment between the shifting inclined section 400 and the digging claw 303 will also release the restriction on the free movement of the digging claw 303.

Claims

1. A trench excavation device for constructing a biomass centralized heating pipeline network, characterized in that, include: The shaft frame (1) has a digging wheel (2) with a digging claw (303) installed in the middle. The digging claw (303) is used to dig the ground. A drive gear (7) is fixedly installed on the side of the digging wheel (2). The mudguard (4) is fixed on the side of the shaft frame (1), and the bottom end of the mudguard (4) is inserted into the ground in front of the shaft frame (1). The part of the mudguard (4) inserted into the ground is the actual excavation area of ​​the digging wheel (2), which makes it easier for construction personnel to accurately grasp the actual excavation area of ​​the digging wheel (2). Telescopic rods (301) are fixedly installed on the inner side of the digging wheel (2). Two telescopic rods (301) are movably installed with a base (3). A return spring (302) located on the outer side of the telescopic rods (301) is connected between the base (3) and the digging wheel (2). A shifting ramp (400) is provided at the end of the mudguard (4) and above the digging wheel (2). When the digging claw (303) passes through the shifting ramp (400), the base (3) will move radially along the digging wheel (2) due to the influence of the arc surface. The digging claw (303) extends out from the side of the digging wheel (2) and throws the soil to one side of the trench.

2. The trench excavation equipment for biomass centralized heating pipeline construction according to claim 1, characterized in that, An adjustable baffle (5) is movably installed on the outer arc surface of the mudguard (4). An adjusting spring (501) is provided between the adjusting baffle (5) and the outer side of the mudguard (4). The adjusting baffle (5) touches the ground and moves forward with the whole machine to avoid the accumulation of soil on the forward path of the shaft frame (1).

3. The trench excavation equipment for biomass centralized heating pipeline construction according to claim 1, characterized in that, There are multiple bases (3), and the multiple bases (3) are arranged in a ring at equal angles.

4. The trench excavation equipment for biomass centralized heating pipeline construction according to claim 3, characterized in that, The transposition slope (400) has an arc-shaped surface.

5. The trench excavation equipment for biomass centralized heating pipeline construction according to claim 1, characterized in that, The original lengths of the reset springs (302) on adjacent bases (3) are different, so that the bases (3) extend relative to each other along the ends of the digging wheel (2), and the directions of extension between the two adjacent bases (3) are different; When the base (3) moves to the side of the trench, the base (3) can squeeze the soil on the side of the trench.

6. The trench excavation equipment for biomass centralized heating pipeline construction according to claim 5, characterized in that, A return ring frame (6) is fixedly installed on the outer side of the shaft frame (1), and a return groove (300) is opened in the middle of the base (3). The return ring frame (6) is inserted into the return groove (300) to achieve alignment between the digging claw (303) and the outer side of the digging wheel (2).

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