Drill rod induction device of drill jumbo propelling mechanism

Abstract

The utility model relates to the technical field of tunnel engineering, in particular to a drill rod induction device of a drill jumbo propelling mechanism, which comprises a mounting seat, a driving piece, a drill rod clamping mechanism and a guide rail. The guide rail and the driving part are coaxially fixed on the mounting seat, the drill rod clamping mechanism is mounted on the guide rail in a sliding manner, the axial direction of the guide rail is perpendicular to the axial direction of a drill rod, one end of the drill rod clamping mechanism is fixed with the first end of the driving part, and the driving part is used for driving the drill rod clamping mechanism to slide on the guide rail. According to the drill rod induction device of the drill jumbo propelling mechanism, the installation base is installed on the middle drill rod supporting device of the drill jumbo propelling mechanism, and the drill rod clamping mechanism is transversely pushed through the driving piece, so that a drill bit is easier to deviate towards the center of a tunnel for drilling when a drill rod drills; the technical problem that in the prior art, over-excavation and under-excavation of the tunnel are difficult to control is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, and particularly relates to a drill pipe guiding device for a propulsion mechanism of a rock drilling jumbo. Background Art

[0002] In current tunnel and mine engineering, the drill and blast method is mainly used for construction. Among them, drilling with a rock drilling jumbo is a common construction method. Due to the limitation of the drill pipe clamping device of the equipment, the drill pipe cannot be attached to the tunnel surrounding rock for drilling, resulting in overbreak or underbreak during the drilling process. For the problems of overbreak and underbreak, the traditional method is to spray concrete to fill the overbreak part and solve it by manual or mechanical secondary excavation, resulting in an increase in excavation economic cost and time cost. Another way to control overbreak is to use the method of bending the drill pipe. First, drill the drill pipe to a relatively shallow depth, and then move the propulsion beam to bend the drill pipe so that the drill bit deflects towards the tunnel center. This method can play a role in controlling overbreak, but it is difficult to control, has high technical requirements for operators, and is easy to damage the drill rod tail. Content of the Utility Model

[0003] The purpose of the utility model is to provide a drill pipe guiding device for a propulsion mechanism of a rock drilling jumbo to solve the technical problem of difficult control of overbreak and underbreak in the prior art. The specific technical solution is as follows:

[0004] The utility model provides a drill pipe guiding device for a propulsion mechanism of a rock drilling jumbo, which includes: a mounting seat, a driving member, a drill pipe clamping mechanism, and a guide rail. The mounting seat is used to be fixed on the middle drill pipe holder of the propulsion mechanism of the rock drilling jumbo. The guide rail and the driving member are fixed on the mounting seat. The drill pipe clamping mechanism is slidably installed on the guide rail. One end of the drill pipe clamping mechanism is fixed to the first end of the driving member. The driving member is used to drive the drill pipe clamping mechanism to slide on the guide rail.

[0005] A further improvement of the drill pipe guiding device for the propulsion mechanism of the rock drilling jumbo of the utility model is that the drill pipe clamping mechanism includes a guiding block, a guiding seat, and a protective cover. The guiding seat is slidably installed on the guide rail. The guiding block is clamped in the guiding seat. The protective cover covers the guiding block and is detachably fixed to the guiding seat. An opening for the drill pipe to pass through is formed on the guiding block.

[0006] A further improvement of the drill pipe guiding device for the propulsion mechanism of the rock drilling jumbo of the utility model is that the top surface of the guiding block is arc-shaped, and the shape of the middle part of the protective cover is adapted to the shape of the top surface of the guiding block.

[0007] A further improvement of the drill pipe guiding device for the propulsion mechanism of the rock drilling jumbo of the utility model is that end plates for blocking both ends of the guiding block are provided in the middle of the protective cover.

[0008] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that ear plates are respectively provided on both sides of the shield, and the ear plates and the guiding seat are detachably fixed by first bolts.

[0009] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that the cross-section of the guide rail is T-shaped, and a slider group for clamping on both sides of the guide rail is provided at the bottom of the guiding seat.

[0010] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that the guiding seat is provided with a mounting plate, and the driving member is fixed to the mounting plate by second bolts.

[0011] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that the mounting seat includes a transverse plate and a vertical plate which are fixedly connected to each other, and the second end of the driving member is fixed to the vertical plate.

[0012] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that a clamping plate is fixed at a position on the transverse plate in front of the vertical plate.

[0013] A further improvement of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model lies in that a side plate is fixed between the side surface of the transverse plate and the side surface of the vertical plate.

[0014] Applying the technical solution of the present utility model has the following beneficial effects:

[0015] For the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model, by installing the mounting seat on the intermediate drill pipe holder of the propulsion mechanism of the rock drilling jumbo and laterally pushing the drill pipe clamping mechanism through the driving member, the drill bit is more likely to deflect towards the center of the tunnel when the drill pipe is drilling, solving the technical problems of difficult control of overbreak and underbreak in the prior art. In addition, the present utility model uses an independent driving member for driving, with accurate and controllable displacement; each component is connected and fixed by bolts, which is convenient for disassembly and assembly, that is, convenient for installation and maintenance, and the hydraulic pipeline is easy to arrange; the top of the fixing block is designed with an arc structure, greatly reducing the side center distance of the drilling hole, making it easier to control the overbreak amount and saving the construction cost; and the drill pipe guiding mechanism can replace the function of the conventional drill pipe holder for fixing the drill pipe, and there is no need to replace the device when drilling different types of holes.

[0016] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of the left drill pipe guiding device of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the right drill pipe guiding device of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the mounting seat of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the drill pipe clamping mechanism of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0022] Figure 5 It is a schematic structural diagram of the guiding seat of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the protective cover of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0024] Figure 7 It is a schematic structural diagram of the guiding block of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0025] Figure 8 It is a schematic structural diagram of the guide rail of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model;

[0026] Figure 9 It is a schematic diagram of the left drill pipe guiding device of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model after being installed with the propulsion mechanism of the rock drilling jumbo;

[0027] Figure 10 It is a schematic diagram of the right drill pipe guiding device of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model after being installed with the propulsion mechanism of the rock drilling jumbo;

[0028] Figure 11 It is a schematic diagram of the drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model in the extended state after being installed with the propulsion mechanism of the rock drilling jumbo.

[0029] Among them, 1. Mounting base; 1.1. Horizontal plate; 1.2. Side plate; 1.3. Clamping plate; 1.4. Vertical plate; 2. Driving member; 3. Drill pipe clamping mechanism; 3.1. Guide seat; 3.2. Slide block; 3.3. Shield; 3.4. End plate; 3.5. Ear plate; 3.6. Guide block; 4. Guide rail; 100. Drill pipe guiding device; 200. Slide rail; 300. Front end drill pipe stabilizer; 400. Drill pipe; 500. Intermediate drill pipe stabilizer; 600. Rock drill. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0031] Referring to Figures 1 to 8 As shown, a drill pipe guiding device of a rock drill jumbo propulsion mechanism includes: a mounting base 1, a driving member 2, a drill pipe clamping mechanism 3, and a guide rail 4. The mounting base 1 is used to be fixed on the intermediate drill pipe stabilizer of the rock drill jumbo propulsion mechanism. The guide rail 4 and the driving member 2 are coaxially fixed on the mounting base 1. The drill pipe clamping mechanism 3 is slidably mounted on the guide rail 4, and the axial direction of the guide rail 4 is perpendicular to the axial direction of the drill pipe. One end of the drill pipe clamping mechanism 3 is fixed to the first end of the driving member 2, and the driving member 2 is used to drive the drill pipe clamping mechanism 3 to slide on the guide rail 4.

[0032] Specifically, the present utility model adopts a modular design concept. The guiding device can be assembled on propulsion mechanisms with different cross-sections, can adapt to drill pipes of different sizes, and improves the versatility of the device. According to the usage mode of the propulsion mechanism, the drill pipe guiding device 100 is divided into left and right. The working modes and principles of the left and right drill pipe guiding devices 100 are the same, and they are distinguished according to the installation direction. The action principle and structure of the right drill pipe guiding device 100 are the same as those of the left drill pipe guiding device 100, and there are only differences in the direction. The driving member 2 is preferably an oil cylinder, and an oil cylinder interface position is reserved below the position corresponding to the driving member 2 on the mounting base 1 for connecting a hydraulic pipeline. An electric telescopic rod can also be used according to needs. The driving member 2 pushes the drill pipe clamping device to displace on the guide rail 4 to achieve the function of bending the drill pipe, and the bending angle of the drill pipe is adjusted by controlling the displacement length. In addition, both the mounting base 1 and the drill pipe clamping mechanism 3 adopt a weight reduction design, that is, some positions are designed as hollowed-out, reducing the weight and cost of the device.

[0033] Preferably, as Figures 4 to 7As shown, the drill pipe clamping mechanism 3 includes a guide block 3.6, a guide seat 3.1 and a shield 3.3 plate. The guide seat 3.1 is slidably mounted on the guide rail 4. The guide block 3.6 is clamped in the guide seat 3.1. The shield 3.3 plate covers the guide block 3.6 and is detachably fixed to the guide seat 3.1. An opening for the drill pipe to pass through is formed on the guide block 3.6. The guide seat 3.1 can drive the guide block 3.6 to slide on the guide rail 4, thereby driving the middle part of the drill pipe in the guide block 3.6 to move horizontally, and further causing the drill pipe to bend.

[0034] Preferably, as Figure 7 shown, the top surface of the guide block 3.6 is arc-shaped, and the shape of the middle part of the shield 3.3 plate is adapted to the shape of the top surface of the guide block 3.6. The arc-shaped (arch-shaped) guide block 3.6 of the present utility model can reduce the side core distance, thereby reducing the external insertion angle of the drill pipe and making it easier to control the overexcavation amount of the drill pipe. In this embodiment, the lower part of the guide block 3.6 is in the shape of a rectangular body, a groove adapted to the lower part of the guide block 3.6 is formed on the guide seat 3.1, the guide block 3.6 is clamped in the groove, and an arc-shaped groove exposing the opening of the guide block 3.6 is provided on the side surface of the groove.

[0035] Preferably, as Figure 6 shown, end plates 3.4 for blocking both ends of the guide block 3.6 are provided in the middle of the shield 3.3 plate, and arc-shaped grooves exposing the openings of the guide block 3.6 are also provided on the end plates 3.4, so as to avoid the axial movement of the guide block 3.6 along the drill pipe without affecting the passing of the drill pipe.

[0036] Preferably, ear plates 3.5 are respectively provided on both sides of the shield 3.3 plate. The ear plates 3.5 and the guide seat 3.1 are detachably fixed by first bolts. Threaded through holes for the first bolts to pass through are formed on the ear plates 3.5, and threaded holes for the first bolts to be screwed into are formed on the guide seat 3.1. Since the guide block 3.6 is extremely easy to wear, the fixing method using bolts can facilitate the replacement of the guide block 3.6.

[0037] Preferably, as Figure 8 shown, the cross-section of the guide rail 4 is T-shaped, and a set of sliders 3.2 for clamping both sides of the guide rail 4 is provided at the bottom of the guide seat 3.1. In this embodiment, the number of the set of sliders 3.2 is two groups, and the two groups of sliders 3.2 are arranged at intervals. Card slots for clamping both sides of the guide rail 4 are provided on the set of sliders 3.2. Through holes are formed on the guide rail 4, and the guide rail 4 is installed on the cross plate 1.1 at the installation seat 1 by bolts. The guide rail 4 can limit the degrees of freedom of the drill pipe clamping mechanism 3, so that the mechanism can only move left and right along the guide rail 4, and at the same time can provide support for the drill pipe clamping mechanism 3 when the middle drill pipe holder moves back and forth.

[0038] Preferably, the guiding seat 3.1 is provided with a mounting plate, and the driving member 2 is fixed to the mounting plate by a second bolt. The mounting plate is in a T shape, so that a space for bolt installation is formed between the flange plate of the mounting plate and the side wall of the groove. Through holes are formed in the flange plate of the mounting plate, and the first end of the driving member 2 is fixed to the flange plate of the mounting plate by the cooperation of a screw rod and a nut.

[0039] Preferably, the mounting seat 1 includes a transverse plate 1.1 and a vertical plate 1.4 which are fixed to each other. The guide rail 4 is fixed to the transverse plate 1.1, and the second end of the driving member 2 is fixed to the vertical plate 1.4. The transverse plate 1.1 is in an L shape, and one side relative to the guide rail 4 is convenient for being fixed to the intermediate drill rod holder of the rock drilling jumbo propulsion mechanism. Specifically, the transverse plate 1.1 is detachably fixed to the intermediate drill rod holder by bolts in cooperation with a backing plate. The arrangement of the vertical plate 1.4 is convenient for installing the driving member 2.

[0040] Preferably, as Figure 3 shown, a clamping plate 1.3 is fixed at a position on the transverse plate 1.1 in front of the vertical plate 1.4 to prevent the driving member 2 from rotating axially.

[0041] Preferably, a side plate 1.2 is fixed between the side surface of the transverse plate 1.1 and the side surface of the vertical plate 1.4 to increase the fixing strength between the transverse plate 1.1 and the vertical plate 1.4 and avoid deformation.

[0042] As Figure 9 and Figure 10 shown, the drill rod guiding device is installed on the intermediate drill rod holder 500 of the rock drilling jumbo propulsion mechanism to support, guide and induce the drill rod 400. The tail end of the drill rod 400 is connected to the shank of the rock drill 600, passes through the drill rod guiding device fixed on the intermediate drill rod holder 500 in the middle, and the front end drill bit passes through the front drill rod holder 300. When the propulsion mechanism works, the drill rod 400 moves forward under the push of the rock drill 600, and the drill rod rotates and impacts simultaneously when advancing. At the same time, the intermediate drill rod holder 500 will advance forward at half the speed of the rock drill, and the hydraulic pipeline of the driving member 2 of the drill rod guiding device is connected to the slide rail 200 and moves with the guiding device. As Figure 11As shown in the figure, when the drill pipe induction device is started, the drill pipe clamping device 3 moves perpendicular to the advancing direction of the drill pipe 400 under the action of the driving member 2, pushing the drill pipe 400 to bend from the middle. Under the limiting action of the shank of the rock drill 600 and the front drill pipe holder 300, the drill bit of the drill pipe 400 deflects in the opposite direction to the movement direction of the drill pipe induction device. When the drill pipe 400 extends forward, the degree of bending will change. By controlling the extension amount of the drill pipe 400, the overexcavation amount during the drilling process can be controlled. In order to prevent the drill pipe clamping mechanism 3 from shifting during operation due to the reciprocating movement of the driving member 2 and the middle drill pipe holder 500, a guide rail 4 is fixed on the left mounting base 1 using a groove and screws, and cooperates with the slider 3.2 on the drill pipe clamping mechanism 3 to form a guiding mechanism to guide the movement of the drill pipe clamping mechanism 3.

[0043] The guide block 3.6 is prone to wear during operation and needs to be replaced frequently. When disassembling the guide block 3.6, first remove the drill pipe 400, loosen the bolts on the clamping mechanism clamping plate 3.5, remove the protective cover, replace the guide block 3.6, and then install it in the reverse order.

[0044] Reference Figure 9 and Figure 11 , the specific process of applying the present invention to drill blast holes in a tunnel is as follows:

[0045] Preparation work: Select the corresponding left or right drill pipe induction device according to the working direction of the propulsion mechanism, and install the drill pipe induction device on the middle drill pipe holder 500 of the propulsion mechanism (replacing the original middle drill pipe holder) using bolts. The drill pipe 400 is installed on the front drill pipe holder 300 of the propulsion mechanism and the shank of the rock drill 600 and passes through the through hole on the guide block 3.6. At the same time, ensure that the central axes of the front drill pipe holder 300 and the shank of the rock drill 600 are on the same axis;

[0046] Drilling construction: The driving member 2 extends left or right to push the drill pipe clamping mechanism 3 and drive the middle part of the drill pipe 400 to bend (at this time, the shanks of the front drill pipe holder 300 and the rock drill 600 do not move left or right). The extension length of the driving member 2 determines the distance that the middle part of the drill pipe 400 is pushed, thus determining the degree of bending of the drill pipe 400, and then determining the overexcavation amount of the drill hole. Therefore, by adjusting the extension length of the driving member 2, a more precise control of the overexcavation amount of the drill hole can be achieved.

[0047] The drill pipe guiding device of the propulsion mechanism of the rock drilling jumbo of the present utility model solves the technical problems of difficult control of overbreak and underbreak in the prior art by installing the mounting seat on the middle drill pipe holder of the propulsion mechanism of the rock drilling jumbo and laterally pushing the drill pipe clamping mechanism by the driving member to bend the drill pipe, so that the drill bit is more easily deflected towards the center of the tunnel during drilling. In addition, the present utility model is driven by an independent driving member, and the displacement is accurately controllable; the various components are connected and fixed by bolts, which is convenient for disassembly and assembly, that is, convenient for installation and maintenance, and the hydraulic pipelines are easy to arrange; the top of the fixing block is designed with an arc structure, which greatly reduces the side center distance of the drilling hole, thereby realizing the control of a larger range of overbreak amount and saving the construction cost; and the drill pipe guiding mechanism can replace the function of the conventional drill pipe holder to fix the drill pipe, and there is no need to replace the device when drilling different types of holes.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drill pipe guiding device for a propulsion mechanism of a rock drilling jumbo, characterized in that, Including: A mounting base (1), a driving member (2), a drill pipe clamping mechanism (3) and a guide rail (4). The mounting base (1) is used to be fixed on the middle drill rod holder of the advancing mechanism of a rock drilling jumbo. The guide rail (4) and the driving member (2) are fixed on the mounting base (1). The drill pipe clamping mechanism (3) is slidably mounted on the guide rail (4). One end of the drill pipe clamping mechanism (3) is fixed to the first end of the driving member (2). The driving member (2) is used to drive the drill pipe clamping mechanism (3) to slide on the guide rail (4).

2. The drill pipe guiding device of the boom advancing mechanism of the rock drilling jumbo according to claim 1, characterized in that, The drill pipe clamping mechanism (3) includes a guide block (3.6), a guide seat (3.1) and a protective cover (3.3). The guide seat (3.1) is slidably mounted on the guide rail (4). The guide block (3.6) is clamped in the guide seat (3.1). The protective cover (3.3) covers the guide block (3.6) and is detachably fixed to the guide seat (3.1). An opening for the drill pipe to pass through is formed in the guide block (3.6).

3. The drill pipe guiding device of the boom advancing mechanism according to claim 2, characterized in that, The top surface of the guide block (3.6) is arc-shaped. The shape of the middle part of the protective cover (3.3) is adapted to the shape of the top surface of the guide block (3.6).

4. The drill pipe guiding device of the boom advance mechanism of the rock drilling jumbo according to claim 3, characterized in that, End plates (3.4) for blocking both ends of the guide block (3.6) are provided in the middle part of the protective cover (3.3).

5. The drill pipe guiding device of the rock drilling jumbo propulsion mechanism according to claim 3, characterized in that, Lug plates (3.5) are respectively provided on both sides of the protective cover (3.3). The lug plates (3.5) and the guide seat (3.1) are detachably fixed by first bolts.

6. The drill pipe guiding device of the boom advancing mechanism of the rock drilling jumbo according to claim 2, wherein, The cross-section of the guide rail (4) is T-shaped. A set of sliders (3.2) for clamping both sides of the guide rail (4) are provided at the bottom of the guide seat (3.1).

7. The drill pipe guiding device of the boom advance mechanism of the rock drilling jumbo according to claim 2, characterized in that, The guide seat (3.1) is provided with a mounting plate. The driving member (2) is fixed to the mounting plate by second bolts.

8. The drill pipe guiding device of the boom advancing mechanism of the rock drilling jumbo according to claim 1, characterized in that, The mounting base (1) includes a horizontal plate (1.1) and a vertical plate (1.4) which are fixed to each other. The guide rail (4) is fixed on the horizontal plate (1.1). The second end of the driving member (2) is fixed to the vertical plate (1.4).

9. The drill pipe guiding device of the boom advance mechanism of the rock drilling jumbo according to claim 8, characterized in that, A clamping plate (1.3) is fixed at a position on the horizontal plate (1.1) in front of the vertical plate (1.4).

10. The drill pipe guiding device of the boom advance mechanism according to claim 8, characterized in that, A side plate (1.2) is fixed between the side surface of the horizontal plate (1.1) and the side surface of the vertical plate (1.4).

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