A device for assisting a double-wheel milling machine to remove the prestressed anchor rod

Abstract

The present invention discloses a device for assisting a double-wheel milling machine to remove the ability of prestressed anchor rods, belonging to the technical field of engineering equipment; the device body includes: at least one baffle; a first steel plate connector for connecting the baffle; a second steel plate connector for connecting the milling head body and the baffle; a third steel plate connector for connecting the milling head body and the baffle; a notch for removing prestressed anchor rods; the present invention is mainly used for wall-forming operations in soft soil layers. During actual operation, the coating of silt may cause the milling wheel to malfunction. The addition of the device can, to a certain extent, block the influence of silt on the milling wheel; the serrated notch at the bottom of the device can cope with the situation of encountering prestressed anchor rods. The diameter of prestressed anchor rods is generally 16mm - 32mm, and the 40mm notch 5 can allow the anchor rods to be stuck and fixed, so that they can be cut off by the milling wheel, preventing problems such as anchor rod jamming and rebound obstruction caused by the anchor rods accompanying the downhole drilling and lateral offset.

Description

Technical Field

[0001] The invention relates to the technical field of engineering equipment, in particular to a device for assisting a double-wheel milling machine in clearing prestressed anchor rods. Background Art

[0002] As the concept of three-dimensional urban construction continues to deepen, the development and utilization of underground space has become a major problem in urban construction. Due to the complex geological conditions in my country, higher requirements are also placed on the construction efficiency, wall quality, energy conservation and environmental protection of construction equipment. Compared with traditional underground continuous wall construction equipment, the double-wheel milling machine has the characteristics of high construction efficiency; good wall quality; low noise and environmental protection during the construction process; large wall depth; and a wider range of strata adaptability, and is adopted by more and more deep foundation pit underground continuous wall projects. However, although the double-wheel milling machine performs more prominently in hard rock formations, in the process of urban construction, the situation in the underground soft soil layer is complicated, and there may be a large number of obstacles such as stone strips, concrete blocks, anchor pipes, prestressed anchor rods, old cast-in-place piles, etc. Due to the lack of fulcrum points, obstacles may occur accompanied by sinking, stuck drills, etc., which seriously affect the construction efficiency. Therefore, the applicant proposed a device to assist the double-wheel milling machine in clearing the prestressed anchor rods to solve the problems of anchor rod stuck drills and rebound obstacles. Summary of the invention

[0003] (I) Technical solution

[0004] The present invention is implemented through the following technical scheme: a device for assisting double-wheel milling to clear the capacity of prestressed anchor rods, comprising a milling head and a device body; the milling head comprises two milling wheels;

[0005] The device body comprises:

[0006] At least one baffle;

[0007] A first steel plate connecting member for connecting the baffle plate;

[0008] A second steel plate connecting piece for connecting the milling head body and the baffle;

[0009] A third steel plate connecting piece for connecting the milling head body and the baffle;

[0010] Used to clean out notches in prestressed anchor rods.

[0011] As a further illustration of the above solution, the notch is sawtooth shaped;

[0012] The notch is also provided with a circular hole with a diameter of 4 cm.

[0013] As a further illustration of the above solution, the milling head is provided with two holes;

[0014] The second steel plate connector and the third steel plate connector fix the milling head body and the baffle through bolts; the first steel plate connector fixes the baffle through bolts.

[0015] As a further description of the above solution, the first steel plate connector is a "]"-shaped steel plate;

[0016] The second steel plate connector is a "]"-shaped steel plate;

[0017] The third steel plate connector is a "Z"-shaped steel plate.

[0018] As a further description of the above solution, the baffle is installed on both sides of the milling wheel;

[0019] The lower edge of the milling wheel extends 40 mm - 100 mm beyond the baffle.

[0020] As a further description of the above solution, the baffle is provided with two driven milling wheels;

[0021] The rotating shaft of the driven milling wheel is connected to the rotating shaft of the milling wheel.

[0022] As a further description of the above solution, four sliding grooves are symmetrically provided in the middle of the baffle;

[0023] The width ratio of the four sliding grooves is 1:1:1:1;

[0024] A wedge-shaped protrusion is provided at the lower part of the baffle;

[0025] The wedge-shaped protrusion is provided with a serrated notch;

[0026] The notch is also provided with a round hole with a diameter of 4 cm.

[0027] As a further description of the above solution, the cross-sectional shape of the baffle is triangular;

[0028] The baffle is provided with two flat grooves.

[0029] As a further description of the above solution, the baffle is provided with a clamping wheel;

[0030] Several slot holes are provided at the edge of the clamping wheel;

[0031] The shape of the slot hole is a round hole with a diameter of 40 mm;

[0032] A trapezoidal notch is provided at the lower side of the baffle.

[0033] As a further description of the above solution, the clamping wheel includes a driving clamping wheel and a driven clamping wheel;

[0034] The driving clamping wheel is driven to rotate by one of the milling wheels;

[0035] A gearbox is provided on the opposite side of the clamping wheel.

[0036] The interior of the gearbox consists of a gear set composed of four gears.

[0037] The driving clamping wheel drives the driven clamping wheel to rotate in the opposite direction through the gearbox.

[0038] (II) Beneficial effects

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention uses high-strength bolts for connection to integrally connect the baffle and the milling head. Lightweight steel is selected for the material, which reduces the equipment cost while having a certain strength to ensure that the baffle will not fall off during the sinking process. The present invention is mainly used for wall-forming operations in soft soil layers. During actual operation, the coating of silt may cause the milling wheel to malfunction. The addition of the baffle in the present invention can, to a certain extent, block the influence of silt on the milling wheel. The serrated notch at the bottom of the baffle can cope with the situation of encountering prestressed anchor rods. The diameter of prestressed anchor rods is generally 16 mm - 32 mm, and the 40-mm notch 5 can allow the anchor rods to be stuck and fixed, so that they can be cut off by the milling wheel to prevent problems such as anchor rod jamming and springback hindrance caused by the anchor rods following the downhole drilling and shifting left and right. Description of the drawings

[0041] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objectives, and advantages of the present invention will become more apparent:

[0042] Figure 1 It is a schematic structural diagram of the device for Embodiment 1;

[0043] Figure 2 It is a schematic structural diagram of the device for Embodiment 1;

[0044] Figure 3 It is a schematic structural diagram of the device for Embodiment 1;

[0045] Figure 4 It is a schematic structural diagram of the notch 5 for Embodiment 1;

[0046] Figure 5 It is a schematic structural diagram of the baffle 4 for Embodiment 2;

[0047] Figure 6 It is a schematic structural diagram of the baffle 4 for Embodiment 3;

[0048] Figure 7 It is a schematic structural diagram of the baffle 4 for Embodiment 4;

[0049] Figure 8 It is a schematic structural diagram of the baffle 4 for Embodiment 5;

[0050] Figure 9Schematic diagram of the gear transmission direction for Embodiment 5.

[0051] In the figure: the third steel plate connecting piece 1, the second steel plate connecting piece 2, the first steel plate connecting piece 3, the baffle 4, the notch 5, the driven milling wheel 11, the sliding groove 12, the wedge-shaped protrusion 13, the flat groove 14, the clamping wheel 15, the gearbox 16, the notch 17. Specific implementation manners

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0053] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0054] Embodiment 1

[0055] An improvement is made to the structure of the original double-wheel milling head, adding components that can fix prestressed anchor rods, mainly for operations under soft geological conditions. It includes a milling head and a device body; the milling head includes two milling wheels;

[0056] Please refer to Figures 1 to 4 ; the device body includes:

[0057] Two baffles 4 are arranged on both sides of the milling wheel, and the lower edge of the milling wheel extends beyond the baffle 40 mm - 100 mm.. Please refer to Figure 4, a notch 5 for clearing prestressed anchor rods is provided at the bottom of the baffle. The shape of the notch is serrated, and a round hole with a diameter of 4 cm is also provided in the notch. On the premise of ensuring that it does not affect the inlet of the mud pump, two holes are left on the milling head for the installation of the baffle. The first steel plate connector 3 is a "]"-shaped steel plate, which is used to connect two baffles 4 and reinforce the overall structure to ensure the overall stability of the structure; the second steel plate connector 2 is a "]"-shaped steel plate, which is used to connect the milling head body and the baffle; the third steel plate connector 1 is a "Z"-shaped steel plate, which is used to connect the milling head body and the baffle 4; the second steel plate connector 2 and the third steel plate connector 1 fix the milling head body and the baffle 4 through bolts; the first steel plate connector 3 fixes the baffle through bolts.

[0058] The present invention uses high-strength bolts for connection to integrate the baffle and the milling head. Lightweight steel is selected for the material, which reduces the equipment cost and also has a certain strength to ensure that the baffle will not fall off during the sinking process. The present invention is mainly used for the wall-forming operation in soft soil layers. During the actual operation, the coating of silt may cause the milling wheel to malfunction. The addition of the baffle in the present invention can, to a certain extent, block the influence of silt on the milling wheel. The serrated notch at the bottom of the baffle can cope with the situation of encountering prestressed anchor rods. The diameter of the prestressed anchor rods is generally 16 mm - 32 mm, and the 40 mm notch 5 can allow the anchor rods to be stuck and fixed, so that they can be cut off by the milling wheel, preventing problems such as anchor rod jamming and rebound obstruction caused by the anchor rod following the downhole drilling and lateral deviation.

[0059] Embodiment 2

[0060] Please refer to Figure 5 , the difference between this embodiment and Embodiment 1 is that the baffle is provided with two driven milling wheels 11; the rotating shafts of the driven milling wheels 11 are connected to the rotating shaft of the milling wheel. During use, there is no need to additionally increase a power device, and the milling wheel is used to drive the driven milling wheels to rotate together. The present invention is mainly used for the wall-forming operation in soft soil layers. During the actual operation, silt may coat the outside of the baffle and form agglomerates. As the processing continuously sinks, the volume of the silt agglomerates may continuously increase, reducing the construction efficiency. The addition of the driven milling wheels in this embodiment can, to a certain extent, borrow the power of the milling wheel to accelerate the removal of the silt outside the baffle and improve the construction efficiency.

[0061] Embodiment 3

[0062] Please refer to Figure 6, The difference between this embodiment and Embodiment 1 is that four chutes 12 are symmetrically provided in the middle of the baffle; the width ratio of the four chutes is 1:1:1:1; a wedge-shaped protrusion 13 is provided at the lower part of the baffle; a serrated notch 5 is provided on the wedge-shaped protrusion; a round hole with a diameter of 4 cm is also provided in the notch 5. The present invention is mainly used for wall-forming operations in soft soil layers. The design of the wedge-shaped protrusion 13 helps to reduce the stress area and reduce the impact of the device on construction. The purpose of setting the chutes is to reduce the weight of the device, while ensuring the longitudinal strength of the baffle and maintaining the strength of the frontal impact resistance.

[0063] Embodiment 4

[0064] Please refer to Figure 7 , The difference between this embodiment and Embodiment 1 is that the cross-sectional shape of the baffle is triangular; two flat grooves 14 are provided on the baffle. The present invention is mainly used for wall-forming operations in soft soil layers. The design of the triangular cross-sectional shape of the baffle helps to reduce the stress area and reduce the impact of the device on construction. At the same time, it ensures the longitudinal strength of the baffle and maintains the strength of the frontal impact resistance. The purpose of setting the two flat grooves is to provide installation positions for the first steel plate connector, the second steel plate connector, and the third steel plate connector.

[0065] Embodiment 5

[0066] Please refer to Figures 8 to 9 , The difference between this embodiment and Embodiment 1 is that the baffle is provided with a caster 15; several slot holes are provided on the edge of the caster 15; the shape of the slot holes is a round hole with a diameter of 40 mm; a trapezoidal notch 17 is provided on the lower side of the baffle. The caster includes a driving caster and a driven caster; the driving caster is driven to rotate by one of the milling wheels; a gearbox 16 is provided on the opposite side of the caster; the inside of the gearbox consists of a gear set composed of four gears; the driving caster drives the driven caster to rotate in the opposite direction through the gearbox. Specifically, the driving caster is connected to the gearbox behind and one of the milling wheels through a key connection; the gear set includes a driving gear 164, a first driven gear 163, a second driven gear 162, and a third driven gear 161; the third driven gear 161 is connected to the driven caster; the purpose of the gear set is not only to drive the rotation of the driving caster and the driven caster by the milling wheel, but also to change the rotation direction of the driven caster. The driving caster rotates clockwise and the driven caster rotates counterclockwise, so that the two casters can clamp the anchor rod into the notch 17 during construction; the diameter of the prestressed anchor rod is generally 16 mm - 32 mm, and the 40 mm slot holes on the caster can allow the anchor rod to be clamped and fixed at the notch 17, so that the anchor rod can be cut off by the milling wheel, preventing problems such as anchor rod jamming and rebound hindrance caused by the anchor rod following the drill bit and deflecting left and right.

[0067] The control method of the present invention is controlled by manually starting and closing a switch. The wiring diagram of the power element and the power supply are common knowledge in the art. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and wiring arrangement will not be explained in detail in the present invention.

[0068] The control method of the present invention is automatically controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and circuit connection will not be explained in detail in the present invention.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments. Moreover, without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0070] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for assisting a double-wheel milling machine to remove prestressed anchor rods, comprising a milling head and a device body; the milling head includes two milling wheels; characterized in that, The device body includes: At least one baffle; A first steel plate connector for connecting the baffle; A second steel plate connector for connecting the milling head body and the baffle; A third steel plate connector for connecting the milling head body and the baffle; A notch for removing prestressed anchor rods; The baffle is provided with two driven milling wheels; The rotating shaft of the driven milling wheel is connected to the rotating shaft of the milling wheel; The cross-sectional shape of the baffle is triangular; The baffle is provided with two flat grooves.

2. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, The shape of the notch is serrated; The notch is also provided with round holes with a diameter of 4 cm.

3. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, The milling head is provided with two holes; The second steel plate connector and the third steel plate connector fix the milling head body and the baffle with bolts; The first steel plate connector fixes the baffle with bolts.

4. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, The first steel plate connector is a "]”-shaped steel plate; The second steel plate connector is a "]”-shaped steel plate; The third steel plate connector is a "Z”-shaped steel plate.

5. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, The baffle is installed on both sides of the milling wheel; The lower edge of the milling wheel extends 40 mm - 100 mm beyond the baffle.

6. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, Four sliding grooves are symmetrically arranged in the middle of the baffle; The width ratio of the four sliding grooves is 1:1:1:1; The lower part of the baffle is provided with a wedge-shaped protrusion; The wedge-shaped protrusion is provided with a serrated notch; The notch is also provided with round holes with a diameter of 4 cm.

7. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 1, characterized in that, The baffle is provided with a clamping wheel; Several slot holes are arranged on the edge of the clamping wheel; The shape of the slot hole is a round hole with a diameter of 40 mm; A trapezoidal notch is arranged on the lower side of the baffle.

8. The device for assisting a double-wheel milling machine to remove prestressed anchor rods according to claim 7, characterized in that, The clamping wheel includes a driving clamping wheel and a driven clamping wheel; The driving clamping wheel is driven to rotate by one of the milling wheels; A gear box is arranged on the opposite side of the clamping wheel; The inside of the gear box consists of a gear set composed of four gears; The driving clamping wheel drives the driven clamping wheel to rotate in the opposite direction through the gear box.

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