Road trencher

Abstract

The utility model relates to a road ditching excavator, including frame, install rotating chassis, transverse cutting mechanism, longitudinal cutting mechanism on the frame, install cab, operating arm mechanism on the rotating chassis, the operating arm mechanism includes fixed arm, the fixed arm is hinged with mobile arm, first hydraulic cylinder, the other end of first hydraulic cylinder is hinged with mobile arm, the lower extreme of mobile arm is provided with excavator bucket, the transverse cutting mechanism includes transverse movement unit, the bottom of transverse movement unit is installed with telescopic part, the lower extreme of telescopic part is installed with transverse grinding wheel motor, the output of transverse grinding wheel motor is installed with transverse grinding wheel, the longitudinal cutting mechanism includes longitudinal grinding wheel motor, the output of longitudinal grinding wheel motor is installed with pivot, the end of pivot is installed with longitudinal grinding wheel, install lifting unit between pivot and frame.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and in particular to a road trenching excavator. Background Technology

[0002] When laying pipes or excavating cement or asphalt surfaces, the traditional method typically involves first using a cutting machine to cut two longitudinal lines along the road surface, then using a pneumatic hammer to break up the excavated area, and finally using an excavator to remove the debris to the required depth. The excavated road surface is then removed as construction waste. The drawbacks of this traditional method are: 1. Manual cutting requires two cuts, resulting in inconsistent cut widths and depths, affecting subsequent processes and reducing efficiency; 2. It wastes manpower and equipment resources, requiring multiple independently operated machines such as cutting machines, pneumatic hammers, and excavators. Furthermore, the traditional method has low construction efficiency; 3. The excavated road surface material cannot be reused.

[0003] Therefore, a road trenching excavator is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a road trenching excavator.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a road trenching excavator, including a frame, on which a rotating chassis, a transverse cutting mechanism and a longitudinal cutting mechanism are installed, and a cab and an operating arm mechanism are installed on the rotating chassis; The operating arm mechanism includes a fixed arm, a movable arm and a first hydraulic cylinder are hinged to the fixed arm, the other end of the first hydraulic cylinder is hinged to the movable arm, and a bucket is provided at the lower end of the movable arm; The transverse cutting mechanism includes a transverse moving unit, a telescopic component is installed at the bottom of the transverse moving unit, a transverse grinding wheel motor is installed at the lower end of the telescopic component, and a transverse grinding wheel is installed at the output end of the transverse grinding wheel motor. The longitudinal cutting mechanism includes a longitudinal grinding wheel motor, a rotating shaft is installed at the output end of the longitudinal grinding wheel motor, a longitudinal grinding wheel is installed at the end of the rotating shaft, and a lifting unit is installed between the rotating shaft and the vehicle frame.

[0006] Preferably, in the above-mentioned road trenching excavator, a clamping arm is hinged to the bucket, and a second hydraulic cylinder is connected between the clamping arm and the movable arm, with both ends of the second hydraulic cylinder hinged to the clamping arm and the movable arm respectively.

[0007] Preferably, in the above-described road trenching excavator, the thickness of the front end of the bucket decreases.

[0008] Preferably, in the above-mentioned road trenching excavator, the lateral movement unit includes a lead screw and at least one guide rod. The lead screw is rotatably mounted on one end of the frame, and the guide rod is arranged parallel to the lead screw and fixedly connected to the frame. A lead screw motor is fixed to one side of the frame, and the output end of the lead screw motor is fixedly connected to one end of the lead screw. A sliding plate is threaded onto the outside of the lead screw, and a guide hole is provided on the sliding plate. The guide rod passes through the interior of the guide hole.

[0009] Preferably, in the road trenching excavator described above, a telescopic component is fixed to the bottom of the sliding plate, and a motor bracket is fixed to the other end of the telescopic component, with the transverse grinding wheel motor mounted on the motor bracket.

[0010] Preferably, in the above-mentioned road trenching excavator, the telescopic component is an electric telescopic rod or a hydraulic cylinder telescopic rod.

[0011] Preferably, in the above-mentioned road trenching excavator, the lifting unit includes a fixed shaft, a sliding plate is mounted on the frame, two swing arms are rotatably connected to the fixed shaft, the other ends of the two swing arms are rotatably connected to the rotating shaft, a third hydraulic cylinder is hinged to the sliding plate, the other end of the third hydraulic cylinder is hinged to the swing arms, and the rotating shaft is arranged parallel to the fixed shaft.

[0012] Preferably, in the above-mentioned road trenching excavator, the longitudinal grinding wheel motor is a dual-shaft motor, with a rotating shaft installed at both output ends of the longitudinal grinding wheel motor, and a longitudinal grinding wheel installed at the end of each of the two rotating shafts. The two swing arms are located on both sides of the longitudinal grinding wheel motor, and a motor mounting plate is fixedly connected between the two swing arms. The longitudinal grinding wheel motor is fixedly mounted on the motor mounting plate.

[0013] Preferably, in the above-mentioned road trenching excavator, slide rails are installed on both sides of the bottom of the frame, a linear motor is installed on the slide rail, a linear motor slider is slidably connected to the slide rail, and the two ends of the sliding plate are respectively fixed on the linear motor slider.

[0014] Preferably, in the above-mentioned road trenching excavator, a sleeve is provided at the center of the longitudinal grinding wheel, the rotating shaft passes through the sleeve, the cross-section of the inner wall of the sleeve and the cross-section of the rotating shaft are both regular hexagons, a bolt is radially inserted into the side of the sleeve, and the end of the bolt abuts against the rotating shaft.

[0015] The beneficial effects of this utility model are: 1. Since the distance between the two adjustable-width longitudinal grinding wheels remains constant and their height is consistent, the grooves cut by this utility model have consistent width and depth. Second, it reduced the number of construction equipment and personnel, improved construction efficiency, reduced energy consumption and construction costs, and reduced noise pollution from the pneumatic hammer machine. Third, the cut rectangular ground pieces can be reused. They can be used to backfill trenches after pipeline installation, or as a rigid roadbed on which a thin layer of reinforced concrete or asphalt pavement can be laid, saving materials, increasing the strength of newly repaired pavements, and reducing the transportation and disposal of construction waste. They can also be used for paving pedestrian walkways in parks or along roadsides, or for paving protective embankments along rivers, highways, and railways. Alternatively, they can be further cut or processed to make reusable cement bricks or asphalt bricks, further reducing construction waste and its transportation and disposal. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a top view of the structure of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Cab; 2. Operating arm mechanism; 21. Fixed arm; 22. Moving arm; 23. First hydraulic cylinder; 24. Second hydraulic cylinder; 25. Clamping arm; 26. Bucket; 3. Lateral cutting mechanism; 31. Lateral grinding wheel; 32. Telescopic component; 33. Lateral grinding wheel motor; 34. Screw motor; 35. Screw; 36. Guide rod; 37. Sliding plate; 4. Wheel; 5. Longitudinal cutting mechanism; 51. Longitudinal grinding wheel; 52. Longitudinal grinding wheel motor; 53. Rotary shaft; 54. Swing arm; 55. Fixed shaft; 56. Sliding plate; 57. Third hydraulic cylinder; 58. Motor mounting plate; 6. Frame; 7. Rotary chassis. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] like Figure 1 , Figure 2 As shown, a road trenching excavator includes a frame 6 with four wheels 4 mounted on both sides. A rotating chassis 7, a transverse cutting mechanism 3, and a longitudinal cutting mechanism 5 are mounted on the frame 6. A cab 1 and an operating arm mechanism 2 are mounted on the rotating chassis 7. The rotating chassis 7 is powered to rotate via a rotary motor and a transmission assembly mounted at its bottom. When the rotating chassis 7 rotates, it drives the cab 1 and the operating arm mechanism 2 to rotate synchronously.

[0020] The operating arm mechanism 2 includes a fixed arm 21, on which a movable arm 22 and a first hydraulic cylinder 23 are hinged. The other end of the first hydraulic cylinder 23 is hinged to the movable arm 22. A bucket 26 is mounted on the lower end of the movable arm 22. When the first hydraulic cylinder 23 is activated, it drives the movable arm 22 to rotate, and the bucket 26 rotates synchronously. A clamping arm 25 is hinged to the bucket 26. A second hydraulic cylinder 24 is connected between the clamping arm 25 and the movable arm 22. Both ends of the second hydraulic cylinder 24 are hinged to the clamping arm 25 and the movable arm 22, respectively. When the second hydraulic cylinder 24 is activated, it drives the clamping arm 25 to rotate. The clamping action is achieved through the rotation of the clamping arm 25 and the bucket 26. The front end of the bucket 26 has a decreasing thickness, which facilitates the insertion of the front end of the bucket 26 into the bottom of the cut stone.

[0021] The transverse cutting mechanism 3 includes a transverse moving unit, which comprises a lead screw 35 and two guide rods 36. The lead screw 35 is rotatably mounted at one end of the cab of the frame 6, i.e., at one end of the bucket. The two guide rods 36 are arranged parallel to each other on both sides of the lead screw 35 and are fixedly connected to the frame 6. A lead screw motor 34 is fixed to one side of the frame 6, and the output end of the lead screw motor 34 is fixedly connected to one end of the lead screw 35. A sliding plate 37 is threaded onto the outside of the lead screw 35. A guide hole is provided on the sliding plate 37, and the guide rods 36 pass through the inside of the guide hole and are slidably connected to the sliding plate 37. A telescopic component 32 is fixed to the bottom of the sliding plate 37, and a motor bracket is fixed to the other end of the telescopic component 32. A transverse grinding wheel motor 33 is mounted on the motor bracket, and a transverse grinding wheel 31 is mounted on the output end of the transverse grinding wheel motor 33. The telescopic component 32 is an electric telescopic rod or a hydraulic cylinder telescopic rod. The transverse cutting mechanism 3 can raise and lower the transverse grinding wheel 31 through the telescopic component 32; the rotation of the lead screw motor 34 in the transverse moving unit can drive the lead screw 35 to rotate, thereby driving the sliding plate 37, the telescopic component 32, the transverse grinding wheel motor 33, and the transverse grinding wheel 31 to move laterally, thereby realizing the transverse moving cutting of the transverse grinding wheel 31.

[0022] The longitudinal cutting mechanism 5 includes a longitudinal grinding wheel motor 52, which is a dual-axis motor. Both output ends of the longitudinal grinding wheel motor 52 are equipped with rotating shafts 53, and longitudinal grinding wheels 51 are mounted at the ends of both rotating shafts 53. A lifting unit is installed between the rotating shafts 53 and the frame 6. The lifting unit includes a fixed shaft 55, and a sliding plate 56 is mounted on the frame 6. The fixed shaft 55 is fixedly connected to the sliding plate 56, and the rotating shaft 53 is parallel to the fixed shaft 55. Two swing arms 54 are rotatably connected to the fixed shaft 55, and the other ends of the two swing arms 54 are rotatably connected to the rotating shaft 53. The two swing arms 54 are located on both sides of the longitudinal grinding wheel motor 52. A motor mounting plate 58 is fixedly connected between the two swing arms 54, and the longitudinal grinding wheel motor 52 is fixedly mounted on the motor mounting plate 58. Two third hydraulic cylinders 57 are hinged to the sliding plate 56, and the other ends of the two third hydraulic cylinders 57 are respectively hinged to the two swing arms 54. When the third hydraulic cylinder 57 operates synchronously, it drives the two swing arms 54 to rotate, thereby changing the distance between the rotating shaft 53, the longitudinal grinding wheel 51 and the ground, thus realizing the lifting and lowering of the longitudinal grinding wheel 51.

[0023] Furthermore, since the cutting speed of the longitudinal grinding wheel 51 limits the normal forward (left in the attached diagram is forward, right is backward) travel speed of the excavator, the travel speed of the excavator must be reduced to accommodate the cutting speed of the longitudinal grinding wheel 51 during longitudinal cutting to ensure normal cutting by the longitudinal grinding wheel 51. However, when the excavator is stopped for operation (operating arm mechanism and transverse cutting mechanism are working), the longitudinal grinding wheel 51 is not performing cutting operations, reducing work efficiency. Therefore, slide rails are installed on both sides of the bottom of the frame 6, and linear motors are mounted on the slide rails. Linear motor sliders are slidably connected to the slide rails, and the two ends of the sliding plate 56 are fixed to the linear motor sliders respectively. When the excavator is stationary, the linear motor drives the linear motor slider, sliding plate 56, and the entire longitudinal cutting mechanism 5 to move at a constant speed to the left (the direction the vehicle is normally traveling forward) to perform longitudinal cutting. When the vehicle is moving, this improves travel efficiency, and the longitudinal cutting mechanism 5 can be driven by the linear motor to move to the right (relative to the left of the ground). The longitudinal cutting mechanism 5 moves at a constant speed to the left relative to the ground under the combined speed of the vehicle speed and the linear motor drive speed, ensuring uniform forward cutting of the ground. This can be controlled via communication with the internal control system, and the maximum travel speed of the excavator at this time is also limited by the control system to ensure uniform cutting of the longitudinal cutting mechanism 5 relative to the ground. When the excavator stops again, the linear motor again drives the linear motor slider, sliding plate 56, and the entire longitudinal cutting mechanism 5 to move forward (to the left) at a constant speed to perform longitudinal cutting of the ground. When the excavator reaches the foremost position of the slide rail and is still stationary, the linear motor stops driving. Since the transverse cutting mechanism 3 needs to frequently stop and cut, and the distance between two stops generally does not exceed the length of the vehicle body (to ensure that the cement blocks on the road can be moved normally and to the depth required to dig the trench), the longitudinal cutting mechanism 5 can greatly improve the overall work efficiency by pre-cutting when the excavator is stopped.

[0024] Furthermore, to improve the applicability of the device, the longitudinal grinding wheels 51 are configured with adjustable spacing. Specifically, a sleeve is provided at the center of the longitudinal grinding wheels 51, and the rotating shaft 53 passes through the sleeve. The cross-section of the inner wall of the sleeve and the cross-section of the rotating shaft 53 are both regular hexagonal or other shapes that can be radially fixed. Bolts are radially inserted into the side of the sleeve, and the ends of the bolts abut against the rotating shaft 53, thereby fixing the longitudinal grinding wheels 51 to the rotating shaft 53. When it is necessary to adjust the position of the two longitudinal grinding wheels 51, the bolts are loosened. At this time, the sleeve and the rotating shaft 53 are slidably connected, and the longitudinal grinding wheels 51 can slide freely to adjust their position. After adjustment, they can be fixed again with bolts.

[0025] Working principle: When the wheels of the device are stopped, the horizontal grinding wheel 31 can be raised and lowered through the telescopic component 32. The horizontal grinding wheel motor 33 is started to drive the horizontal grinding wheel 31 to rotate. Cutting can begin when the horizontal grinding wheel 31 contacts the ground. The rotation of the lead screw motor 34 in the horizontal movement unit can drive the lead screw 35 to rotate, thereby driving the sliding plate 37, telescopic component 32, horizontal grinding wheel motor 33, and horizontal grinding wheel 31 to move laterally, thus realizing the lateral movement and cutting of the horizontal grinding wheel 31. When the excavator is moving, the horizontal grinding wheel 31 is raised above the ground to avoid contact with the ground. The longitudinal grinding wheel motor 52 drives the two longitudinal grinding wheels 51 to rotate. When the third hydraulic cylinder 57 moves synchronously, it drives the two swing arms 54 to rotate, thereby changing the distance between the rotating shaft 53, the longitudinal grinding wheel 51 and the ground, thus realizing the raising and lowering of the longitudinal grinding wheel 51. Cutting begins when the longitudinal grinding wheel 51 contacts the ground. As the device moves, the two longitudinal grinding wheels 51 cut two parallel cutting lines parallel to the travel trajectory. The road surface to be excavated is then divided into several rectangular blocks by the transverse cutting mechanism 3. The cut blocks are then transferred by the operating arm mechanism 2, and the process continues as follows... Figure 2 As shown, the clamping arm 25 and the bucket 26 are driven to rotate by the action of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 to achieve the clamping action. After the cut block is clamped, it is transferred by rotating the chassis 7.

[0026] Furthermore, when the longitudinal cutting mechanism 5 is slidably connected to the frame 6, when the excavator is stationary, the linear motor drives the linear motor slider, sliding plate 56, and the entire longitudinal cutting mechanism 5 to move uniformly to the left to perform longitudinal cutting. When the vehicle is moving, this improves travel efficiency, and the longitudinal cutting mechanism 5 can be driven by the linear motor to move to the right (relative to the left of the ground). The longitudinal cutting mechanism 5 moves uniformly relative to the ground under the combined speed of the vehicle speed and the linear motor drive speed, ensuring uniform forward cutting of the ground. This can be controlled via communication with the internal control system, and the maximum travel speed of the excavator at this time is also limited by the control system to a certain range to ensure uniform cutting of the longitudinal cutting mechanism 5 relative to the ground. When the excavator stops again, the longitudinal cutting mechanism 5 has moved away from the left end of the slide rail, and the linear motor again drives the linear motor slider, sliding plate 56, and the entire longitudinal cutting mechanism 5 to move uniformly to the left to perform longitudinal cutting of the ground.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A road trencher characterized by: Includes a frame (6), on which a rotating chassis (7), a transverse cutting mechanism (3), and a longitudinal cutting mechanism (5) are mounted, and on which a cab (1) and an operating arm mechanism (2) are mounted; The operating arm mechanism (2) includes a fixed arm (21), a movable arm (22) and a first hydraulic cylinder (23) are hinged on the fixed arm (21), the other end of the first hydraulic cylinder (23) is hinged to the movable arm (22), and a bucket (26) is provided at the lower end of the movable arm (22). The transverse cutting mechanism (3) includes a transverse moving unit, a telescopic component (32) is installed at the bottom of the transverse moving unit, a transverse grinding wheel motor (33) is installed at the lower end of the telescopic component (32), and a transverse grinding wheel (31) is installed at the output end of the transverse grinding wheel motor (33). The longitudinal cutting mechanism (5) includes a longitudinal grinding wheel motor (52), the output end of which is equipped with a rotating shaft (53), the end of which is equipped with a longitudinal grinding wheel (51), and a lifting unit is installed between the rotating shaft (53) and the frame (6).

2. The road trenching excavator according to claim 1, characterized in that: A clamping arm (25) is hinged to the bucket (26), and a second hydraulic cylinder (24) is connected between the clamping arm (25) and the moving arm (22). The two ends of the second hydraulic cylinder (24) are respectively hinged to the clamping arm (25) and the moving arm (22).

3. The road trenching excavator according to claim 2, characterized in that: The thickness of the front end of the bucket (26) decreases.

4. The road trenching excavator according to claim 1, characterized in that: The lateral movement unit includes a lead screw (35) and at least one guide rod (36). The lead screw (35) is rotatably mounted on one end of the frame (6). The guide rod (36) is arranged parallel to the lead screw (35) and is fixedly connected to the frame (6). A lead screw motor (34) is fixed on one side of the frame (6). The output end of the lead screw motor (34) is fixedly connected to one end of the lead screw (35). A sliding plate (37) is threaded onto the outside of the lead screw (35). A guide hole is provided on the sliding plate (37), and the guide rod (36) passes through the interior of the guide hole.

5. The road trenching excavator according to claim 4, characterized in that: The bottom of the sliding plate (37) is fixed with a telescopic component (32), and the other end of the telescopic component (32) is fixed with a motor bracket. The transverse grinding wheel motor (33) is mounted on the motor bracket.

6. The road trenching excavator according to claim 5, characterized in that: The telescopic component (32) is an electric telescopic rod.

7. The road trenching excavator according to claim 1, characterized in that: The lifting unit includes a fixed shaft (55), a sliding plate (56) is mounted on the frame (6), two swing arms (54) are rotatably connected to the fixed shaft (55), the other ends of the two swing arms (54) are rotatably connected to the rotating shaft (53), a third hydraulic cylinder (57) is hinged on the sliding plate (56), the other end of the third hydraulic cylinder (57) is hinged to the swing arm (54), and the rotating shaft (53) is arranged parallel to the fixed shaft (55).

8. The road trenching excavator according to claim 7, characterized in that: The longitudinal grinding wheel motor (52) is a dual-axis motor. Both output ends of the longitudinal grinding wheel motor (52) are equipped with rotating shafts (53). The ends of the two rotating shafts (53) are equipped with longitudinal grinding wheels (51). The two swing arms (54) are located on both sides of the longitudinal grinding wheel motor (52). A motor mounting plate (58) is fixedly connected between the two swing arms (54). The longitudinal grinding wheel motor (52) is fixedly mounted on the motor mounting plate (58).

9. The road trenching excavator according to claim 7, characterized in that: The bottom sides of the frame (6) are equipped with slide rails, and a linear motor is mounted on the slide rail. A linear motor slider is slidably connected to the slide rail, and the two ends of the sliding plate (56) are respectively fixed on the linear motor slider.

10. The road trenching excavator according to claim 8, characterized in that: A sleeve is provided at the center of the longitudinal grinding wheel (51), and the rotating shaft (53) passes through the sleeve. The cross-section of the inner wall of the sleeve and the cross-section of the rotating shaft (53) are both regular hexagons. A bolt is radially inserted into the side of the sleeve, and the end of the bolt abuts against the rotating shaft (53).

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