Anchor rod drilling machine adjusting device

Abstract

The anchor rod drilling machine adjusting device comprises a bottom plate, an adjusting mechanism, a drill arm and a supporting device. The adjusting mechanism comprises a first swing cylinder fixedly connected with the bottom plate, a fixing seat with one end fixedly connected with the output end of the first swing cylinder and a second swing cylinder installed at the other end of the fixing seat. The second oscillating cylinder drives the drilling arm to rotate relative to the fixed seat; the supporting device is installed on the fixing base and comprises a supporting block and a driving element, the supporting block has a first state separated from the bottom plate and a second state abutting against the bottom plate, and the driving element is used for driving the supporting block to be switched between the first state and the second state. The adjusting device of the jumbolter has the advantages of being simple and compact in structure and high in hole alignment precision, providing effective auxiliary support for an adjusting mechanism, reducing the torque requirement of the swing cylinder, solving the problem of difficulty in model selection of the swing cylinder, improving the overall stability of the jumbolter and prolonging the service life of the jumbolter.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an adjusting device for an anchor drill. Background Art

[0002] Anchor drilling rigs are mainly used in subways, tunnel projects, coal mine projects, water conservancy projects, and urban infrastructure construction. In these projects, anchor drilling rigs play a vital role and provide strong guarantees for the stability and safety of tunnels.

[0003] In tunnel and underground projects, bolting rigs are used to drill holes in the surrounding rock to install bolts or cables. These bolts or cables can penetrate deep into the rock mass, provide additional support, enhance the stability of the rock mass, and prevent the rock layer from moving or collapsing, thereby ensuring construction safety. Compared with traditional manual excavation or blasting methods, bolting rigs can complete drilling operations faster and improve construction progress. At the same time, due to its high precision, it can reduce material waste and thus reduce construction costs. The bolting rig is mainly composed of core parts such as the drill arm, adjustment mechanism and drive mechanism. Each part has a key function and together ensures the efficiency and safety of the drilling operation.

[0004] The drill arm is an important part of the anchor drilling rig. It supports the drill bit and drill rod and is responsible for the positioning and guidance of the drilling. The adjustment mechanism is used to adjust the position and angle of the drill arm and drill bit to meet different drilling requirements. Through the adjustment mechanism, the depth, direction and inclination angle of the drilling can be accurately controlled. The drive mechanism is the power part of the anchor drilling rig and is responsible for providing the power required for drilling.

[0005] Chinese patent CN112211655A discloses a "hole-finding angle adjustment mechanism for anchor drilling rigs" comprising a carriage assembly, a power assembly, a drill arm and two slewing mechanisms, wherein the front end of the drill arm is connected to the rear of the carriage assembly through the slewing mechanism, and the rear end is connected to a connecting seat through the slewing mechanism, and the connecting seat is used to connect to the main machine. Although the problem of difficulty in finding the hole position when drilling holes in existing anchor drilling rigs is solved, there are some technical defects.

[0006] When bolting and grouting tunnels, some tunnels have a larger diameter. This means that the bolt holes need to cover a wider range of angles. To meet this requirement, the adjustment mechanism must have a high degree of flexibility and precision to ensure that the grouting slurry can penetrate evenly and effectively into the rock or soil to be reinforced. Due to the wide range of angles covered by the bolt holes, the swing arm of the adjustment mechanism needs to be correspondingly longer so that it can reach every corner of the tunnel. However, the increase in the length of the swing arm also causes a series of problems: the mechanical stress increases, while the stability of the equipment decreases accordingly. Both factors bring additional technical difficulties and safety risks to the grouting operation. In particular, the long swing arm and the need to cover a large angle result in the bolting rig needing to output huge torque during the operation. This high torque requirement not only makes the selection of the swing cylinder in the slewing mechanism more difficult, but may also have an adverse effect on the overall service life and performance of the drilling rig. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide an anchor drilling rig adjustment device which has a simple and compact structure, is easy to operate, has high hole accuracy, provides effective auxiliary support for the adjustment mechanism, reduces the torque requirement of the swing cylinder, solves the problem of difficulty in selecting the swing cylinder, and improves the overall stability and service life of the drilling rig.

[0008] In order to solve the above technical problems, the utility model provides a technical solution, an anchor drilling rig adjustment device, which at least includes:

[0009] Base plate;

[0010] An adjustment mechanism, the adjustment mechanism comprising a first swing cylinder fixedly connected to the base plate, a fixing seat at one end fixedly connected to an output end of the first swing cylinder, and a second swing cylinder installed at the other end of the fixing seat;

[0011] Drill arm, the second swing cylinder drives the rotating arm to swing relative to the fixed seat;

[0012] A supporting device is installed on the fixed seat, and the supporting device at least includes a supporting block and a driving element. The supporting block has a first state separated from the base plate and a second state abutting against the base plate. The driving element is used to drive the supporting block to switch between the first state and the second state.

[0013] In a preferred embodiment, the driving element includes but is not limited to a hydraulic cylinder, a pneumatic cylinder and a linear motor.

[0014] In a preferred embodiment, the hydraulic cylinder or the pneumatic cylinder comprises a cylinder barrel rotatably connected to the fixing seat and a piston rod whose free end is fixedly connected to the supporting block.

[0015] In a preferred embodiment, the fixing seat is fixedly connected to a fixing shaft, and an end of the cylinder away from the piston rod is provided with a mounting hole rotatably connected to the fixing shaft, and the cylinder is rotatably connected to the fixing seat via the mounting hole and the fixing shaft.

[0016] In a preferred embodiment, a locking device is arranged between the hydraulic cylinder or the pneumatic cylinder and the fixed seat; under the action of the locking device, the hydraulic cylinder or the pneumatic cylinder has a locked state where it is stationary relative to the fixed seat and an unlocked state where it can rotate freely relative to the fixed seat.

[0017] In a preferred embodiment, the locking device includes a first locking plate fixedly connected to the cylinder, a second locking plate fixedly connected to the fixing seat, and a pin, the first locking plate is provided with a first pin hole, the second locking plate is provided with a second pin hole, and the first pin hole and the second pin hole are adapted to the pin.

[0018] In a preferred embodiment, the hydraulic cylinder or the pneumatic cylinder in the unlocked state drives the support block to abut against the base plate along a direction perpendicular to the base plate via the piston rod.

[0019] In a preferred embodiment, the free end of the fixed shaft passes through the mounting hole and is sequentially sleeved with a gasket, a locking washer and a nut.

[0020] In a preferred embodiment, the rotation center axis of the output end of the second swing cylinder is arranged in parallel with the rotation center axis of the output end of the first swing cylinder.

[0021] Compared with the prior art, the anchor drilling rig adjustment device of the utility model has the following beneficial effects:

[0022] (1) The anchor drill adjustment device of the utility model comprises a base plate, an adjustment mechanism, a drill arm and a support device. The adjustment device comprises a first swing cylinder fixedly connected to the base plate, a fixed seat with one end fixedly connected to the output end of the first swing cylinder, and a second swing cylinder installed at the other end of the fixed seat; the second swing cylinder drives the drill arm to rotate relative to the fixed seat. During the tunnel drilling operation, the first swing cylinder is used to drive the fixed seat to rotate a certain angle relative to the base plate until the second swing cylinder intersects with the hole position, and the second swing cylinder is used to drive the drill arm to rotate relative to the fixed seat until the drill arm and the hole position are in line, thereby completing the hole alignment. Such a structural design has a simple structure, simple operation and high hole alignment accuracy. The support device is installed on the fixed seat and comprises at least a support block and a driving element. The support block has a first state separated from the base plate and a second state abutting against the base plate. The support block is configured to be movable between the first state and the second state, and the driving element is used to drive the support block to switch between the first state and the second state. Such a structural design, on the one hand, after the drill arm completes the hole alignment, the driving element drives the support block to abut against the base plate, providing effective auxiliary support for the fixed seat. For some large-diameter tunnel drilling operations, even if the length of the drill arm and the fixed seat is increased accordingly, generating a larger torque, the supporting effect of the support device reduces the torque demand for the swing cylinder, solving the problem of swing cylinder selection. On the other hand, during the drilling operation, the support device provides additional supporting force, reducing the impact of the reverse impact force on the overall anchor drilling rig during the drilling process, reducing vibration, and improving the overall stability and service life.

[0023] (2) The utility model provides an adjustment device for an anchor drilling rig, wherein the driving elements of the support device include but are not limited to a hydraulic cylinder, a pneumatic cylinder and a linear motor. A locking device is arranged between the hydraulic cylinder or the pneumatic cylinder and the fixed seat. Such a structural design enables the hydraulic cylinder or the pneumatic cylinder to have two states: one is a locked state in which it is stationary relative to the fixed seat, and the other is an unlocked state in which it can rotate freely relative to the fixed seat. Through the locking device, the support device can be effectively and firmly locked to ensure stability and safety during the construction process. The overall structural design is compact and optimizes space occupancy. In particular, when the hydraulic cylinder or the pneumatic cylinder is in a locked state, the space it occupies is extremely small, which is very suitable for construction in narrow environments such as tunnels, and will not interfere with other construction activities in the tunnel. This design not only improves construction efficiency, but also greatly enhances the flexibility and safety of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of an anchor drilling rig adjustment device of the utility model;

[0025] Figure 2 for Figure 1 A partial enlarged structural schematic diagram of part A shown;

[0026] Figure 3 for Figure 1 The schematic diagram of the matching structure between the mounting hole of part A and the fixed shaft is shown;

[0027] Figure 4 for Figure 1 A partial enlarged structural schematic diagram of part B is shown;

[0028] Figure 5 The present invention is a working principle diagram of an embodiment of an adjusting device for an anchor drilling rig according to the present invention.

[0029] Description of reference numerals:

[0030] 1-base plate; 2-adjustment mechanism; 21-first swing cylinder; 22-fixed seat; 221-fixed shaft; 222-gasket; 223-stop washer; 224-nut; 23-second swing cylinder; 3-drill arm; 4-support device; 41-support block; 42-driving element; 421-cylinder barrel; 4211-mounting hole; 422-piston rod; 5-locking device; 51-first locking plate; 52-second locking plate; 53-pin. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The utility model provides an adjusting device for an anchor drilling machine, such as Figure 1 As shown, it at least includes a base plate 1, an adjustment mechanism 2, a drill arm 3 and a supporting device 4.

[0035] The adjustment mechanism includes a first swing cylinder 21 fixedly connected to the base plate 1 , a fixing seat 22 with one end fixedly connected to the output end of the first swing cylinder, and a second swing cylinder 23 installed at the other end of the fixing seat.

[0036] The drill arm is rotatably connected to the other end of the fixed seat, and the second swing cylinder is used to drive the drill arm to rotate relative to the fixed seat.

[0037] The supporting device is installed on the fixed seat, and the supporting device includes at least a supporting block 41 and a driving element 42. The supporting block has a first state separated from the base plate and a second state abutted against the base plate. The supporting block is configured to be movable between the first state and the second state. The driving element 42 is used to drive the supporting block to switch between the first state and the second state.

[0038] In this embodiment, a mounting plate 31 is provided at the connection position between the drill arm and the fixed seat, the second swing cylinder is fixedly connected to the mounting plate, the output end is fixedly connected to the fixed seat, and the rotation center axis of the second swing cylinder is arranged parallel to the rotation center axis of the first swing cylinder.

[0039] During the tunnel drilling operation, the first swing cylinder is used to drive the fixed seat to rotate a certain angle relative to the bottom plate until the second swing cylinder intersects the hole position, and the second swing cylinder is used to drive the drill arm to rotate relative to the fixed seat until the drill arm and the hole position are in line, completing the hole alignment. This structural design has a simple structure, simple operation, and high hole alignment accuracy.

[0040] The driving element 42 includes, but is not limited to, a hydraulic cylinder, a pneumatic cylinder, and a linear motor.

[0041] In this embodiment, the driving element 42 of the supporting device is configured as a hydraulic cylinder, which includes a cylinder barrel 421 rotatably connected to a fixing seat and a piston rod 422 whose free end is fixedly connected to the supporting block 41 .

[0042] like Figure 3 As shown, the fixed seat 22 is fixedly connected to the fixed shaft 221, and the end of the cylinder 421 away from the piston rod 422 is provided with a mounting hole 4211 rotatably connected to the fixed shaft. The free end of the fixed shaft passes through the mounting hole, and a bearing is provided between the mounting hole and the fixed shaft. Through the matching connection between the mounting hole and the fixed shaft, the end of the hydraulic cylinder away from the piston rod is rotatably connected to the fixed seat.

[0043] Preferably, Figure 2 As shown, after the fixed shaft passes through the mounting hole, the free end of the fixed shaft is sequentially sleeved with a gasket 222, a locking washer 223 and a nut 224 to ensure the stability of the fixed shaft and the mounting hole.

[0044] A locking device 5 is arranged between the hydraulic cylinder of the driving element 42 and the fixed seat. Under the action of the locking device, the hydraulic cylinder has a locked state in which it is stationary relative to the fixed seat and an unlocked state in which it can rotate freely relative to the fixed seat.

[0045] The locking device can effectively lock the support device firmly to ensure stability and safety during construction. The overall structure is compact and space occupancy is optimized. Especially when the hydraulic cylinder is in the locked state, it occupies very little space, which is very suitable for construction in narrow environments such as tunnels, and will not interfere with other construction activities in the tunnel. This design not only improves construction efficiency, but also greatly enhances the flexibility and safety of the construction site.

[0046] In this embodiment, Figure 4 As shown, the locking device includes a first locking plate 51 fixedly connected to the cylinder 421, a second locking plate 52 fixedly connected to the fixing seat 22, and a pin 53, the first locking plate is provided with a first pin hole, the second locking plate is provided with a second pin hole, and the first pin hole and the second pin hole are adapted to the pin;

[0047] If the pin is embedded in the first pin hole and the second pin hole at the same time, the hydraulic cylinder is in a locked state, otherwise the hydraulic cylinder is in an unlocked state.

[0048] Preferably, the pin 53 is a handle-type rotating plunger pin.

[0049] like Figure 5 As shown, the hydraulic cylinder in the unlocked state drives the support block to abut against the bottom plate along a direction perpendicular to the bottom plate through the piston rod 422 .

[0050] A control method of an anchor drilling rig adjustment device of this embodiment:

[0051] Step S1, aligning holes;

[0052] Based on the position of the hole, the first swing cylinder 21 is controlled to drive the fixed seat 22 to rotate a certain angle relative to the bottom plate until the second swing cylinder intersects the hole, and the second swing cylinder 23 is controlled to drive the drill arm 3 to rotate relative to the fixed seat 22 until the drill arm and the hole are in line, completing the hole alignment;

[0053] Step S2, controlling the supporting device to be in an unlocked state;

[0054] The control pin 53 puts the hydraulic cylinder in an unlocked state. Under the action of gravity, the hydraulic cylinder rotates adaptively relative to the fixed seat so that the piston rod and the bottom plate are in a vertical state.

[0055] Step S3, driving the supporting device to switch the supporting block from the first state to the second state;

[0056] The hydraulic cylinder is controlled to drive the support block to abut against the bottom plate along a direction perpendicular to the bottom plate through the piston rod.

[0057] Such a structural design, on the one hand, after the drill arm completes the hole alignment, the driving element drives the support block to abut against the base plate, providing effective auxiliary support for the fixed seat. For some large-diameter tunnel drilling operations, even if the length of the drill arm and the fixed seat is increased accordingly, generating a larger torque, the supporting effect of the support device has less impact on the swing cylinder, thus solving the problem of swing cylinder selection. On the other hand, during the drilling operation, the support device provides additional supporting force, reducing the impact of the reverse impact force on the overall anchor drilling rig during the drilling process, reducing vibration, and improving the overall stability and service life.

[0058] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustment device for an anchor drilling rig, characterized in that: At least: Bottom plate (1); An adjustment mechanism (2), the adjustment mechanism comprising a first swing cylinder (21) fixedly connected to the base plate, a fixing seat (22) having one end fixedly connected to an output end of the first swing cylinder (21), and a second swing cylinder (23) mounted on the other end of the fixing seat; A drill arm (3), wherein the second swing cylinder drives the drill arm to swing relative to the fixing seat (22); A support device (4), the support device is installed on the fixed seat, the support device at least comprises a support block (41) and a driving element (42), the support block has a first state separated from the base plate and a second state abutting against the base plate, and the driving element (42) is used to drive the support block to switch between the first state and the second state.

2. An adjustment device for an anchor drill according to claim 1, characterized in that: The driving element (42) includes but is not limited to a hydraulic cylinder, a pneumatic cylinder and a linear motor.

3. An adjusting device for an anchor drill according to claim 2, characterized in that: The hydraulic cylinder or the pneumatic cylinder comprises a cylinder barrel (421) rotatably connected to the fixing seat and a piston rod (422) with a free end fixedly connected to the supporting block (41).

4. An adjusting device for an anchor drill according to claim 3, characterized in that: The fixing seat is fixedly connected to a fixing shaft (221); one end of the cylinder away from the piston rod (422) is provided with a mounting hole (4211) rotatably connected to the fixing shaft; the cylinder is rotatably connected to the fixing seat via the mounting hole and the fixing shaft.

5. An adjusting device for an anchor drill according to claim 4, characterized in that: A locking device (5) is arranged between the hydraulic cylinder or the pneumatic cylinder and the fixing seat; Under the action of the locking device, the hydraulic cylinder or the pneumatic cylinder has a locked state in which it is stationary relative to the fixing seat, and an unlocked state in which it is freely rotatable relative to the fixing seat.

6. An adjusting device for an anchor drill according to claim 5, characterized in that: The locking device comprises a first locking plate (51) fixedly connected to the cylinder (421), a second locking plate (52) fixedly connected to the fixing seat (22), and a pin (53), wherein the first locking plate is provided with a first pin hole, and the second locking plate is provided with a second pin hole, and the first pin hole and the second pin hole are adapted to the pin.

7. An adjusting device for an anchor drill according to claim 6, characterized in that: The hydraulic cylinder or the pneumatic cylinder in the unlocked state drives the support block to abut against the base plate in a direction perpendicular to the base plate via the piston rod (422).

8. An adjusting device for an anchor drill according to claim 7, characterized in that: The free end of the fixed shaft (221) passes through the mounting hole (4211) and is sequentially sleeved with a gasket (222), a stop washer (223) and a nut (224).

9. An adjusting device for an anchor drill according to claim 8, characterized in that: The rotation center axis of the output end of the second swing cylinder is arranged in parallel with the rotation center axis of the output end of the first swing cylinder.

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