A trenching device for municipal construction

Abstract

The utility model relates to municipal construction device technical field especially municipal construction is with grooving device, including device main part, grooving disc, eccentric wheel and impact lever, device main part is equipped with walking wheel, and has the built -in drive motor, the top position transverse installation of device main part has V type support, V type support is fixed by two same size specifications V type board symmetry, and grooving disc is installed at the bottom of V type support through positioning shaft, and grooving disc is located in the central position of two V type boards, one end of positioning shaft is connected with drive motor output end through drive belt, eccentric wheel rotation is installed in the top other end of V type support, and the same side position of eccentric wheel and positioning shaft all is provided with synchronous wheel, and the between two synchronous wheels is connected through synchronous belt, and the bottom of one end of V type support towards eccentric wheel is welded with the support plate, and the bottom inboard position symmetry of support plate is installed with the locating plate, the utility model effectively improved the overall quality and effect of grooving.

Description

Technical Field

[0001] This utility model relates to the field of municipal construction equipment technology, and in particular to a grooving device for municipal construction. Background Technology

[0002] Trenching equipment for municipal construction is specialized equipment used in municipal road engineering to excavate trenches in asphalt, concrete, and other road surfaces or strata. It primarily serves core scenarios such as underground pipeline laying, road maintenance, and drainage system construction. Through cutting and crushing operations, it creates trenches of specific depth and width, and is crucial equipment for ensuring the efficiency and quality of municipal infrastructure construction. The performance of this type of equipment directly affects trenching accuracy, operational efficiency, and adaptability to different road surfaces. Especially in the construction of hard pavements such as asphalt and concrete, it is necessary to consider core requirements such as cutting resistance control, trench wall integrity protection, and equipment operational stability. Existing grooving equipment for municipal construction has some limitations when operating on asphalt and concrete pavements: traditional equipment mostly uses a single rotary cutting grooving mode, which results in high cutting resistance and stress concentration when facing high-strength concrete pavements, easily leading to groove wall cracking and cutter head jamming, requiring additional edge trimming. For asphalt pavements, although the cutting resistance is lower, uneven distribution of cutting stress can easily cause rough edges and debris adhesion problems, resulting in poor overall construction results.

[0003] Therefore, it is necessary to provide a grooving device for municipal construction to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a grooving device for municipal construction.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a grooving device for municipal construction, including a device body, a grooving plate, an eccentric wheel and an impact rod. The device body is equipped with a walking wheel and has a built-in drive motor. A V-shaped bracket is horizontally installed at the top of the device body. The V-shaped bracket is formed by two V-shaped plates of the same size and specifications symmetrically fixed. The slotted disc is mounted on the bottom of the V-shaped bracket via a positioning shaft, and the slotted disc is located in the middle of the two V-shaped plates. One end of the positioning shaft is connected to the output end of the drive motor via a drive belt. The eccentric wheel is rotatably mounted on the top of the V-shaped bracket. Synchronous wheels are provided on the same side of the eccentric wheel and the positioning shaft, and the two synchronous wheels are connected by a synchronous belt. A support plate is welded to the bottom of the end of the V-shaped bracket facing the eccentric wheel. Positioning plates are symmetrically installed on the bottom inner side of the support plate, and there is an insertion position between the opposite sides of the two positioning plates. The impact rod is vertically installed at the insertion position. The top of the impact rod is connected to a drive arm via a hinge, and the end of the drive arm is connected to an eccentric wheel. An impact head is connected to the bottom of the impact rod. The impact head is a columnar metal component with a trapezoidal cross-section.

[0006] Preferably, the impact rod and the impact head have interconnected internal grooves. A limiting block is fixedly installed in the internal groove at the position of the impact rod. A T-shaped rod is inserted into the internal groove. A support spring is installed on the outer wall of the T-shaped rod facing the limiting block. A conical head is fixedly connected to the bottom end face of the T-shaped rod.

[0007] Preferably, the two ends of the conical head are provided with threaded grooves at equal intervals along its transverse direction, and a counterweight is installed in the threaded grooves.

[0008] Preferably, crossbars are symmetrically installed on the outer side wall of the positioning plate, and a limiting plate is welded to the end of the crossbar. Side brackets are installed on the two crossbars on the same side, and a cleaning roller is rotatably installed at the bottom of the side bracket.

[0009] Preferably, a positioning spring is sleeved on the outer wall of the crossbar between the bracket and the limiting plate. A rectangular groove is provided in the center of the outer wall of the positioning plate, and the rectangular groove is connected to the inner groove. A first wedge block and a second wedge block are arranged sequentially from top to bottom in the rectangular groove. The first wedge block is fixed to the outer wall of the impact rod, and the second wedge block is fixed to the inner wall of the bracket.

[0010] Preferably, the insertion position between the opposing surfaces of the two positioning plates is coated with lubricating grease, and part of the lubricating grease covers the outer wall of the impact rod.

[0011] Preferably, the V-shaped bracket is provided with reinforcing ribs at equal intervals at the upper position, and the two ends of the reinforcing ribs are fixed to the V-shaped bracket by bolts.

[0012] Compared with related technologies, the trenching device for municipal construction provided by this utility model has the following beneficial effects: This invention provides a grooving device for municipal construction. The impact head of this invention first targets a pre-set cutting line, forming micro-cracks and weak layers inside the road surface. This is equivalent to pre-paving the way for subsequent cutting, reducing the resistance when the grooving disc directly cuts the road surface, making cutting more labor-saving and faster, while reducing energy consumption during the cutting process. The grooving disc cuts along the weak layers formed by the impact, which can effectively avoid problems such as groove wall cracking and skewed cuts that are prone to occur when directly cutting hard layers. It can significantly improve the flatness and regularity of the final grooving cut, resulting in better grooving quality. At the same time, the two work together to achieve an orderly connection between impact pretreatment and cutting. Compared with a single cutting mode, it can complete the road grooving task more efficiently and with higher quality.

[0013] This invention provides a grooving device for municipal construction. This device utilizes inertial impact to more efficiently create a deeper and more regularly spaced weak layer at the cutting line. However, different road surfaces have vastly different impact strength requirements: too weak an impact will fail to create an effective weak layer, while too strong an impact may cause excessive damage to the road surface and affect surrounding structures. By adjusting the counterweight by adding or removing weight blocks, the intensity of the inertial impact can be directly changed. This adjustability allows the same device to adapt to various road surface scenarios without replacing the impact components, improving operational flexibility and versatility. Attached Figure Description

[0014] Figure 1 This is a side view of the overall structure of this utility model; Figure 2 This is a partial three-dimensional view of the structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This utility model Figure 2 A magnified view of a portion of region A in the middle; Figure 5 This utility model Figure 3 A magnified view of a portion of region B in the middle; Figure 6 This utility model Figure 3 Enlarged view of a portion of region C The following are the labeling elements in the diagram: 1. Main body of the device; 2. V-shaped bracket; 3. Positioning shaft; 4. Grooved plate; 5. Eccentric wheel; 7. Drive arm; 20. Reinforcing rib; 21. Support plate; 22. Positioning plate; 23. Impact rod; 221. Crossbar; 222. Limiting plate; 223. Side bracket; 224. Cleaning roller; 225. Positioning spring; 226. Rectangular groove; 231. First wedge block; 232. Second wedge block; 71. Internal groove; 72. Limiting block; 73. T-shaped rod; 74. Support spring; 75. Conical head; 751. Threaded groove; 752. Counterweight. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0017] Please see Figures 1-6The present invention provides a grooving device for municipal construction, comprising a device body 1, a grooving disc 4, an eccentric wheel 5, and an impact rod 23. The device body 1 is equipped with a traveling wheel and has a built-in drive motor. The traveling wheel and the drive motor are existing technologies, and their specific working principles will not be described in detail in this embodiment. A V-shaped bracket 2 is horizontally installed at the top of the main body 1 of the device. The V-shaped bracket 2 is symmetrically fixed by two V-shaped plates of the same size and specifications, and both are high-strength structural components. Meanwhile, the V-shaped bracket 2 is provided with reinforcing ribs 20 at equal intervals at the upper position, and the two ends of the reinforcing ribs 20 are fixed to the V-shaped bracket 2 by bolts. The reinforcing ribs 20 increase the overall strength of the V-shaped bracket 2, making the V-shaped bracket 2 less prone to deformation during construction. The slotted disc 4 is installed at the bottom of the V-shaped bracket 2 via the positioning shaft 3, and the slotted disc 4 is located in the middle of the two V-shaped plates. One end of the positioning shaft 3 is connected to the output end of the drive motor via a drive belt. When the drive motor is started, it can drive the positioning shaft 3 to rotate, and in turn drive the slotted disc 4 to rotate at high speed through the positioning shaft 3. The grooving disc 4 rotates at high speed and comes into contact with the municipal road surface to complete the grooving operation. The grooving depth can be achieved by the device body 1 driving the V-shaped bracket 2 to move vertically. The eccentric wheel 5 is rotatably mounted on the top of the V-shaped bracket 2. Synchronous pulleys are located on the same side of both the eccentric wheel and the positioning shaft, and the two synchronous pulleys are connected by a synchronous belt. As the positioning shaft 3 moves, it drives the eccentric wheel 5 to rotate through the action of the synchronous pulley and the synchronous belt. The diameter of the synchronous pulley on one side of the positioning shaft 3 is smaller than the diameter of the synchronous pulley on the other side of the eccentric wheel 5, which reduces the rotational speed of the eccentric wheel 5 (relative to the rotational speed of the slotted disc 4). A support plate 21 is welded to the bottom of one end of the V-shaped bracket 2 facing the eccentric wheel 5. Positioning plates 22 are symmetrically installed on the inner side of the bottom of the support plate 21, and there is a plug-in position between the opposing surfaces of the two positioning plates 22. The impact rod 23 is installed vertically at the insertion position, meaning that the impact rod 23 can move relative to the insertion position along the vertical municipal road surface; Furthermore, the insertion points between the opposing surfaces of the positioning plate 22 are coated with lubricating grease, and some of the lubricating grease covers the outer wall of the impact rod 23. The lubricating grease reduces the frictional loss between the impact rod 23 and the insertion points when the impact rod 23 moves. The top of the impact rod 23 is connected to the drive arm 6 via a hinge, and the end of the drive arm 6 is connected to the eccentric wheel 5. The bottom of the impact rod 23 is connected to the impact head 7. After the eccentric wheel 5 rotates, it drives the impact rod 23 to move up and down reciprocally at the insertion position via the drive arm 6. The impact head 7 is a columnar metal component with a trapezoidal cross section. When the impact rod 23 moves up and down reciprocally at the insertion position, it synchronously drives the impact head 7 to reciprocate towards the municipal road surface. Therefore, in this embodiment, the impact head 7 first makes a targeted impact on the preset cutting line, forming micro cracks and weak layers inside the road surface, which is equivalent to pre-opening the way for subsequent cutting, reducing the resistance when the grooving disc 4 directly cuts the road surface, making the cutting more labor-saving and faster, while reducing the energy consumption during the cutting process. The grooving disc 4 cuts along the weak layer formed by impact, which can effectively avoid problems such as groove wall cracking and skewed cut that are easy to occur when cutting hard layers directly. It can significantly improve the flatness and regularity of the final grooving cut, making the grooving quality better. At the same time, the two work together to achieve an orderly connection between impact pretreatment and cutting and shaping. Compared with the single cutting mode, it can complete the road grooving task more efficiently and with higher quality.

[0018] In another embodiment, see Figures 2-6 The impact rod 23 and the impact head 7 have interconnected internal grooves 71, and the impact rod 23 and the impact head 7 are two structurally identical components that are fastened together by bolts. A limiting block 72 is fixedly installed in the built-in groove 71 at the position of the impact rod 23. A T-shaped rod 73 is inserted into the built-in groove 71. The T-shaped rod 73 can move vertically in the built-in groove 71. The limiting block 72 locks its vertical position, that is, the T-shaped rod 73 does not fall out of the built-in groove 71. A support spring 74 is installed on the outer wall of the T-shaped rod 73 and above the limiting block 72. Under normal conditions, the support spring 74 presses the top of the T-shaped rod 73 against the highest position of the built-in groove 71. A conical head 75 is fixedly connected to the bottom end face of the T-shaped rod 73. When the T-shaped rod 73 is at the highest position of the built-in groove 71, the conical head 75 is housed in the impact head 7, or in other words, the bottom horizontal height of the impact head 7 is lower than the bottom horizontal height of the conical head 75 at this time. After the impact head 7 first contacts the municipal road surface, the T-shaped rod 73 slides vertically down under the action of inertia, causing the impact head 7 to impact the municipal road surface a second time. After the impact head 7 separates from the municipal road surface, the rebound force generated when the support spring 74 is compressed will then drive the T-shaped rod 73 to reset. In this embodiment, the inertial impact more efficiently forms a deeper and more regularly spaced weak layer of crack at the cutting line: For ordinary asphalt pavements, it can quickly break down the surface structure; for hard concrete pavements, it can also effectively penetrate the surface and break down the internal aggregate bonding. This further reduces the cutting resistance of the subsequent grooving disc 4, making the cutting speed faster and less labor-intensive.

[0019] Furthermore, refer to Figure 6 As shown, threaded grooves 751 are provided at equal intervals along the transverse direction at both ends of the tapered head 75, and a counterweight 752 is installed in the threaded grooves 751. The counterweight 752 can be installed or removed according to the actual situation. Different road surfaces (such as soft old asphalt, high-strength reinforced concrete, and thin cement-stabilized layers) have vastly different requirements for impact force: if the impact is too weak, an effective weak layer cannot be formed; if the impact is too strong, it may cause excessive damage to the road surface and affect the surrounding structure. However, by adjusting the counterweight 752, the intensity of the inertial impact can be directly changed. When cutting hard surfaces, adding counterweights allows for a stronger impact to overcome the hardness barrier; when cutting soft surfaces or thin pavements, reducing counterweights allows for precise pretreatment with a weaker impact. This adjustability allows the same equipment to be adapted to various road surface scenarios without the need to change impact components, improving operational flexibility and versatility.

[0020] In another embodiment, reference Figures 1-4 The outer side wall of the positioning plate 22 is symmetrically equipped with crossbars 221, and the end of the crossbars 221 is welded with a limiting plate 222; Side supports 223 are installed on the two crossbars 221 on the same side. A cleaning roller 224 is rotatably installed at the bottom of the side supports 223. When grooving is carried out, the whole device 1 moves along the preset route. The cleaning roller 224 contacts the surface of the municipal road and rotates along its surface to clean the debris generated by impact and cutting in a directional manner. Furthermore, a positioning spring 225 is sleeved on the outer wall of the crossbar 221 between the bracket 223 and the limiting plate 222, and a rectangular groove 226 is provided in the center of the outer wall of the positioning plate 22, and the rectangular groove 226 is connected to the built-in groove 71. A first wedge block 231 and a second wedge block 232 are arranged sequentially from top to bottom within the rectangular groove 226. The first wedge block 231 is fixed to the outer wall of the impact rod 23, and the second wedge block 232 is fixed to the inner wall of the bracket 223. In actual operation, the impact rod 23 drives the first wedge block 231 to move toward the second wedge block 232 during reciprocating movement. When the two come into contact (when the first wedge block 231 is at its maximum displacement, the first wedge block 231 and the second wedge block 232 are in contact), the first wedge block 231 generates a lateral compressive force on the second wedge block 232. The second wedge block 232 drives the bracket 223 to move laterally on the crossbar 221 and compress the positioning spring 225. When the first wedge block 231 rises to separate from the second wedge block 232, the rebound force generated when the positioning spring 225 is compressed will drive the bracket 223 to reset again. Therefore, the cleaning roller 224 installed at the end of the bracket 223 will move along the vertical direction of the slot on the original basis, increasing its cleaning effect on the slotted area.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A grooving device for municipal construction, characterized in that, include: The device body (1) is equipped with walking wheels and has a built-in drive motor. A V-shaped bracket (2) is horizontally installed at the top of the device body (1). The V-shaped bracket (2) is symmetrically fixed by two V-shaped plates of the same size. The slotted plate (4) is installed at the bottom of the V-shaped bracket (2) by a positioning shaft (3), and the slotted plate (4) is located in the middle of the two V-shaped plates. One end of the positioning shaft (3) is connected to the output end of the drive motor by a drive belt. An eccentric wheel (5) is rotatably mounted on the top of the V-shaped bracket (2). Synchronous wheels are provided on the same side of the eccentric wheel (5) and the positioning shaft (3), and the two synchronous wheels are connected by a synchronous belt. A support plate (21) is welded to the bottom of one end of the V-shaped bracket (2) facing the eccentric wheel (5). A positioning plate (22) is symmetrically installed on the inner side of the bottom of the support plate (21). There is an insertion position between the opposing surfaces of the two positioning plates (22). Impact rod (23), the impact rod (23) is vertically installed in the plug position, the top of the impact rod (23) is connected to the drive arm (6) through the hinge seat, and the end of the drive arm (6) is connected to the eccentric wheel (5). The bottom of the impact rod (23) is connected to the impact head (7), which is a columnar metal component with a trapezoidal cross section.

2. The grooving device for municipal construction according to claim 1, characterized in that, The impact rod (23) and the impact head (7) have interconnected internal grooves (71). A limiting block (72) is fixedly installed in the internal groove (71) at the position of the impact rod (23). A T-shaped rod (73) is inserted into the internal groove (71). A support spring (74) is installed on the outer wall of the T-shaped rod (73) facing the limiting block (72) at the upper position. A conical head (75) is fixedly connected to the bottom end face of the T-shaped rod (73).

3. A grooving device for municipal construction according to claim 2, characterized in that, The tapered head (75) has threaded grooves (751) at equal intervals along its transverse direction at both ends, and a counterweight (752) is installed in the threaded grooves (751).

4. A grooving device for municipal construction according to claim 1, characterized in that, The outer side wall of the positioning plate (22) is symmetrically equipped with crossbars (221), and the end of the crossbars (221) is welded with a limiting plate (222). Side brackets (223) are installed on the two crossbars (221) on the same side, and cleaning rollers (224) are rotatably installed at the bottom of the side brackets (223).

5. A grooving device for municipal construction according to claim 4, characterized in that, A positioning spring (225) is sleeved on the outer wall of the crossbar (221) between the bracket (223) and the limiting plate (222). A rectangular groove (226) is provided in the center of the outer wall of the positioning plate (22), and the rectangular groove (226) is connected to the built-in groove (71). A first wedge block (231) and a second wedge block (232) are arranged in the rectangular groove (226) from top to bottom. The first wedge block (231) is fixed on the outer wall of the impact rod (23), and the second wedge block (232) is fixed on the inner wall of the bracket (223).

6. A grooving device for municipal construction according to claim 1, characterized in that, The insertion position between the opposing surfaces of the two positioning plates (22) is coated with lubricating grease, and part of the lubricating grease covers the outer wall of the impact rod (23).

7. A grooving device for municipal construction according to claim 1, characterized in that, The V-shaped bracket (2) is provided with reinforcing ribs (20) at equal intervals at the upper position, and the two ends of the reinforcing ribs (20) are fixed to the V-shaped bracket (2) by bolts.

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