A milling head for a dual-wheel hydraulic milling drill

Abstract

The utility model relates to the technical field of construction machinery, especially is a kind of milling head of double-wheel hydraulic milling drilling machine, including washing head box and cutterhead, adjusting shaft is rotatably connected in washing head box, connecting arm is fixedly connected on the outer wall of adjusting shaft, the cutterhead is rotatably connected in the other end plate on connecting arm, cutterhead one is fixedly connected on the outer wall of cutterhead, the end of cutterhead one is fixedly connected with cutterhead two, wedge-shaped cutterhead is arranged on the side wall of cutterhead one, mounting block is fixedly connected on the side of wedge-shaped cutterhead, and mounting block is slidably sleeved in the setting of cutterhead one.The utility model, by setting wedge-shaped cutterhead, mounting block, unlocking groove, unlocking block, internal hexagonal screw rod, guide slot, clamping block and spring structure mutually cooperate, can conveniently additionally install wedge-shaped cutterhead on the outer wall of cutterhead one, to reduce cutterhead load, improve device service life, with practicality.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery technology, and in particular to a milling head for a dual-wheel hydraulic milling drill. Background Technology

[0002] The twin-wheel stirring drill milling head equipment is driven by two waterproof gearboxes to mill and cut the surrounding original soil, causing the in-situ soil to mix with cement slurry. It can cut hard soil layers such as gravel bottom layer and rock layer, and is widely used in the fields of building foundation reinforcement, water-stop retaining structure, water conservancy and underground engineering seepage prevention.

[0003] In existing technologies, when a twin-wheel hydraulic milling drill encounters rock or soil layers during construction, it mainly uses a cutter head to mill the rock. However, the rock layer causes significant wear on the cutter head, which affects the drilling efficiency of the equipment and also impacts the service life of the cutter head. Therefore, we propose an improvement to the milling head of the twin-wheel hydraulic milling drill. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a milling head for a dual-wheel hydraulic milling drill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a milling head for a dual-wheel hydraulic milling drill includes a head washing box and a cutter head. An adjusting shaft is rotatably connected inside the head washing box. A connecting arm is fixedly connected to the outer wall of the adjusting shaft. The cutter head is rotatably connected to the other end plate of the connecting arm. A first cutter head is fixedly connected to the outer wall of the cutter head. A second cutter head is fixedly connected to the end of the first cutter head. A wedge-shaped cutter head is provided on the side wall of the first cutter head. An installation block is fixedly connected to one side of the wedge-shaped cutter head. The installation block is slidably fitted inside the first cutter head. Trapezoidal openings are provided on both outer walls of the first cutter head. An unlocking groove is provided inside the first cutter head. Guide grooves are provided on both sides of the installation block inside the first cutter head. A locking block is slidably connected in the guide groove. The locking block passes through the trapezoidal opening and leads to the unlocking groove. An unlocking block is slidably connected in the unlocking groove. An internal hexagonal screw is rotatably connected inside the wedge-shaped cutter head. The unlocking block is threadedly connected to the outer wall of the internal hexagonal screw.

[0006] As a further description of the above technical solution:

[0007] The cutter head is provided in multiple ways, and the multiple cutter heads are evenly distributed on the outer wall of the cutter disc.

[0008] The above technical solutions improve the uniformity of force on the cutter head during cutting.

[0009] As a further description of the above technical solution:

[0010] The protrusion of the wedge-shaped cutter head is oriented in the direction of rotation when the cutter head is working. A rectangular opening is provided on the side of the wedge-shaped cutter head away from the cutter head. The nut of the internal hexagonal screw is rotatably disposed in the rectangular opening.

[0011] The above technical solution allows the wrench to be easily inserted through the rectangular opening and fitted into the nut of the internal hexagonal screw.

[0012] As a further description of the above technical solution:

[0013] Both the unlocking block and the card block have trapezoidal ends, and the beveled structure of the unlocking block end matches the beveled structure of the card block end.

[0014] The above technical solution allows the card block to move automatically by moving the unlocking block to press the card block.

[0015] As a further description of the above technical solution:

[0016] A spring is fixedly connected between the card block and the inner wall of the guide groove, and the spring is movably sleeved in the guide groove.

[0017] The above technical solution utilizes a spring to automatically reset the locking block when no external force is applied.

[0018] As a further description of the above technical solution:

[0019] An adjustable hydraulic motor is fixedly installed inside the shampoo box. Gears are fixedly connected to the output end of the adjustable hydraulic motor and the outer wall of the adjusting shaft, and two adjacent gears on the same side are meshed together.

[0020] The above technical solution utilizes the meshing relationship of gears to make the two adjusting shafts on both sides rotate simultaneously, thereby achieving the angle adjustment of the cutter heads on both sides through the connecting arm.

[0021] As a further description of the above technical solution:

[0022] A spray pipe is fixedly connected to the middle of the shampoo box, and the spray pipe is located in the middle of the blade disc.

[0023] The above technical solution uses nozzles primarily for circulating mud flow.

[0024] This utility model has the following beneficial effects:

[0025] 1. Compared with existing technologies, the milling head of this dual-wheel hydraulic milling drill uses a wedge-shaped cutter head, mounting block, unlocking groove, unlocking block, internal hexagonal screw, guide groove, locking block, and spring structure to work together. By adding a wedge-shaped cutter head to the first cutter head, the cutting ability of the cutter head is further improved, and the load on the first and second cutter heads when cutting rocks is reduced, thereby improving the overall durability of the device. In addition, during installation, the wedge-shaped cutter head is inserted into the first cutter head through the mounting block, and the locking block is used to engage it in the unlocking groove, which completes the installation of the wedge-shaped cutter head, reducing the installation difficulty. Furthermore, by using a hex wrench to turn the internal hexagonal screw, the unlocking block can be moved, and the locking block is pressed into the trapezoidal opening position on both sides of the mounting block. This pulls the wedge-shaped cutter head, and the inclined structure of the trapezoidal opening, in conjunction with the inclined structure at the end of the locking block, further presses the locking block into the guide groove, thereby completing the disassembly of the mounting block and realizing the removal of the wedge-shaped cutter head, which is convenient and time-saving.

[0026] 2. Compared with the prior art, the milling head of this dual-wheel hydraulic milling drill, through the cooperation of adjusting shaft, connecting arm, adjusting hydraulic motor and gear, can drive the adjusting shaft to rotate by adjusting hydraulic motor during the operation of the cutter head, and then use the gear meshing relationship to adjust the included angle of the two adjusting shafts, thereby increasing the hub distance when cutting hard rock, further reducing the single-point load, and thus extending the tool life. Attached Figure Description

[0027] Figure 1 This is a main structural diagram of the milling head of a dual-wheel hydraulic milling drill proposed in this utility model;

[0028] Figure 2 This utility model provides a diagram showing the gear distribution inside the milling head washing box of a dual-wheel hydraulic milling drill.

[0029] Figure 3 This utility model provides a structural diagram of the adjusting shaft connection of the milling head of a dual-wheel hydraulic milling drill.

[0030] Figure 4 for Figure 5 Enlarged view of the structure at point A in the middle.

[0031] Figure 5 This is a diagram showing the internal structure of the cutter head of a dual-wheel hydraulic milling drill proposed in this utility model.

[0032] Legend:

[0033] 1. Shampoo box body; 2. Adjusting shaft; 3. Connecting arm; 4. Blade disc; 5. Blade head one; 6. Blade head two; 7. Wedge-shaped blade head; 8. Mounting block; 9. Unlocking groove; 10. Unlocking block; 11. Hex socket screw; 12. Guide groove; 13. Locking block; 14. Spring; 15. Adjusting hydraulic motor; 16. Gear; 17. Spray nozzle. Detailed Implementation

[0034] Reference Figure 1-5 This utility model provides a milling head for a dual-wheel hydraulic milling drill: it includes a head washing box 1 and a cutter head 4. An adjusting shaft 2 is rotatably connected inside the head washing box 1, and a connecting arm 3 is fixedly connected to the outer wall of the adjusting shaft 2. The cutter head 4 is rotatably connected to the other end plate of the connecting arm 3. A hydraulic motor is embedded inside the connecting arm 3 and is rigidly connected to the rotating shaft of the cutter head 4 through a flange for driving. Considering that this is prior art in this field, it will not be described in detail here. A first cutter head 5 is fixedly connected to the outer wall of the cutter head 4, and a second cutter head 6 is fixedly connected to the end of the first cutter head 5. A wedge-shaped cutter head 7 is provided on the side wall of the first cutter head 5, and a mounting block 8 is fixedly connected to one side of the wedge-shaped cutter head 7. The mounting block 8 is slidably sleeved inside the first cutter head 5, and trapezoidal openings are provided on both outer walls of the first cutter head 5. The cutter head 7 has an unlocking groove 9 inside and guide grooves 12 on both sides of the mounting block 8. A locking block 13 is slidably connected in the guide groove 12. The locking block 13 passes through the trapezoidal opening and leads to the unlocking groove 9. An unlocking block 10 is slidably connected in the unlocking groove 9. An internal hexagonal screw 11 is rotatably connected in the wedge-shaped cutter head 7. The unlocking block 10 is threaded onto the outer wall of the internal hexagonal screw 11. By turning the internal hexagonal screw 11 with an external hexagonal wrench, the unlocking block 10 can be moved, thereby squeezing the locking block 13 and causing it to disengage from the unlocking groove 9 and enter the trapezoidal opening. Then, by pulling the mounting block 8 with the wedge-shaped cutter head 7, the locking block 13 can be completely disengaged from the trapezoidal opening and enter the guide groove 12, thus facilitating the disassembly of the wedge-shaped cutter head 7.

[0035] Multiple cutter heads 5 are provided, and the multiple cutter heads 5 are evenly distributed on the outer wall of the cutter disc 4 to improve the uniform force on the cutter disc 4 during cutting.

[0036] The protrusion of the wedge-shaped cutter head 7 is oriented in the direction of rotation of the cutter head 5 during operation. A rectangular opening is provided on the side of the wedge-shaped cutter head 7 away from the cutter head 5. The nut of the internal hexagonal screw 11 is rotatably disposed in the rectangular opening, making it convenient to insert a wrench through the rectangular opening and fit it into the nut of the internal hexagonal screw 11.

[0037] Both the unlocking block 10 and the locking block 13 are made of trapezoidal structure, and the inclined structure of the unlocking block 10 end is matched with the inclined structure of the locking block 13 end. By moving the unlocking block 10 to press the locking block 13, the locking block 13 can be moved automatically.

[0038] A spring 14 is fixedly connected between the locking block 13 and the inner wall of the guide groove 12. The spring 14 is movably sleeved in the guide groove 12. By setting the spring 14, the elastic force of the spring 14 can be used to make the locking block 13 automatically reset after the absence of external force.

[0039] A hydraulic motor 15 is fixedly installed inside the shampoo box 1. Gears 16 are fixedly connected to the output end of the hydraulic motor 15 and the outer wall of the adjusting shaft 2. Two adjacent gears 16 on the same side are meshed together. By utilizing the meshing relationship of the gears 16, the two adjusting shafts 2 on both sides can rotate simultaneously, thereby adjusting the included angle of the blade discs 4 on both sides through the connecting arm 3.

[0040] A spray pipe 17 is fixedly connected to the middle of the shampoo box 1. The spray pipe 17 is located in the middle of the cutter head 4 and is mainly used to circulate the mud flow.

[0041] Working principle: During installation, the mounting block 8 is inserted into the opening on the cutter head 5. During the installation of the mounting block 8, the locking block 13 is compressed into the guide groove 12, compressing the spring 14. When the trapezoidal openings on both sides of the mounting block 8 move to the locking block 13, the spring 14 resets, causing the locking block 13 to enter the unlocking groove 9, thus fixing the mounting block 8. This completes the installation and fixing of the wedge-shaped cutter head 7 and the cutter head 5. During disassembly, the groove on the nut of the internal hexagonal screw 11 is adjusted by using a hexagonal wrench. Turning the internal hexagonal screw 11 rotates the unlocking block 10, which slides in the unlocking groove 9. This presses the two locking blocks 13 together and moves them back into the trapezoidal opening. Then, the wedge-shaped cutter head 7 is pulled, causing the mounting block 8 to move outward. The inclined structure of the trapezoidal opening presses the inclined structure on the side of the locking block 13, further compressing the locking block 13 into the guide groove 12. This allows the wedge-shaped cutter head 7 to be removed from the cutter head 5, which is convenient and easy.

[0042] During use, when encountering rock formations, the hydraulic motor 15 can be adjusted to drive the adjustment shaft 2 fixedly connected to its output end to rotate. Then, the gear 16 meshes to drive another adjustment shaft 2 to rotate. This allows the connecting arm 3 to drive the cutter heads 4 on both sides to unfold, so that when cutting chips, the wedge-shaped cutter head 7 can be used to further reduce the load on the cutter head, thereby avoiding damage to the cutter head from the rock and improving the life of the cutter head.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling head for a dual-wheel hydraulic milling drill, comprising a head washing box (1) and a cutter head (4), characterized in that: An adjusting shaft (2) is rotatably connected inside the shampoo box (1). A connecting arm (3) is fixedly connected to the outer wall of the adjusting shaft (2). The blade disc (4) is rotatably connected to the other end plate of the connecting arm (3). A blade head (5) is fixedly connected to the outer wall of the blade disc (4). A blade head (6) is fixedly connected to the end of the blade head (5). A wedge-shaped blade head (7) is provided on the side wall of the blade head (5). An installation block (8) is fixedly connected to one side of the wedge-shaped blade head (7). The installation block (8) is slidably fitted inside the blade head (5). (5) has trapezoidal openings on both outer walls. The inside of the first cutter head (5) has an unlocking groove (9). The first cutter head (5) has guide grooves (12) on both sides of the mounting block (8). A locking block (13) is slidably connected in the guide groove (12). The locking block (13) passes through the trapezoidal opening and is set in the unlocking groove (9). An unlocking block (10) is slidably connected in the unlocking groove (9). An internal hexagonal screw (11) is rotatably connected in the wedge-shaped cutter head (7). The unlocking block (10) is threaded onto the outer wall of the internal hexagonal screw (11).

2. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: Multiple cutter heads (5) are provided, and the multiple cutter heads (5) are evenly distributed on the outer wall of the cutter disc (4).

3. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: The protrusion of the wedge-shaped cutter head (7) is oriented in the direction of rotation when the cutter head (5) is working. A rectangular opening is provided on the side of the wedge-shaped cutter head (7) away from the cutter head (5). The nut of the internal hexagonal screw (11) is rotatably disposed in the rectangular opening.

4. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: The ends of the unlocking block (10) and the card block (13) are both made of trapezoidal structure, and the inclined structure of the end of the unlocking block (10) and the inclined structure of the end of the card block (13) are matched and set.

5. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: A spring (14) is fixedly connected between the inner wall of the card block (13) and the guide groove (12), and the spring (14) is movably sleeved in the guide groove (12).

6. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: The shampoo box (1) is fixedly equipped with an adjustable hydraulic motor (15). The output end of the adjustable hydraulic motor (15) and the outer wall of the adjusting shaft (2) are both fixedly connected with gears (16), and two adjacent gears (16) on the same side are meshed together.

7. The milling head of a twin-wheel hydraulic milling drill according to claim 1, characterized in that: A spray pipe (17) is fixedly connected to the middle of the shampoo box (1), and the spray pipe (17) is located in the middle of the blade disc (4).

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