Rock drill propelling beam

Abstract

The invention relates to the technical field of rock drills, in particular to a rock drill propelling beam which comprises a beam arm, a flexible plugging strip and a driving mechanism, a first side plate is fixed to one side of the beam arm with the C-shaped section, a second side plate is fixed to the other side of the beam arm, two sliding seats capable of sliding in the length direction of the beam arm are installed on the opening side of the beam arm, and a connecting plate is fixedly connected between the two sliding seats. Guide rollers are rotationally installed at the four top corners in the beam arm correspondingly, the flexible plugging strip sequentially winds around the guide rollers, and the two ends of the flexible plugging strip are fixed to the sides, away from each other, of the two sliding seats correspondingly. A dynamic plugging structure is formed on the open side of the beam arm with the C-shaped section through cooperation of the sliding seat, the connecting plate, the guide roller and the flexible plugging strip, the flexible plugging strip rotates around the guide roller along with movement of the sliding seat, the open side is always sealed, a dustproof space wrapping the driving mechanism is formed, dust is isolated, abrasion and faults of the driving mechanism are reduced, and the service life of the driving mechanism is prolonged. Maintenance cost is reduced, and equipment reliability and service life are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rock drills, and particularly to a propulsion beam of a rock drill. Background Art

[0002] A rock drill is a drilling device for soil or rock layers, which can be used to extract energy substances such as gaseous fuels. The propulsion beam of the rock drill supports the drill rod and provides a linear propulsion force to achieve directional drilling of an efficient rock drill. As the core executing component of the rock drill, the structural design of the propulsion beam directly affects the drilling accuracy, equipment reliability and operation efficiency.

[0003] In the prior art, the propulsion beam of a rock drill mostly adopts a hollow rigid frame structure, and the driving mechanism (such as a motor, a chain drive assembly) is exposed to the working environment. However, a large amount of rock powder, dust and debris generated during the drilling process will invade the driving mechanism through the frame gaps, resulting in the following technical problems:

[0004] Attenuation of drilling accuracy: Wear of the driving mechanism will cause fluctuations in the propulsion force and a decrease in the feeding stability of the drill rod, which will in turn lead to drilling deviation and it is difficult to achieve high-precision directional drilling of the rock drilling equipment;

[0005] Dust pollution and component wear: Exposed transmission components (such as sprockets, chains) are easily adhered to by rock powder, forming abrasive wear, accelerating the risk of gear meshing failure and chain breakage, and significantly shortening the equipment life;

[0006] Poor dynamic adaptability of the sealing structure: Most traditional dust covers are of fixed design and cannot be adjusted synchronously with the reciprocating movement of the propulsion beam, resulting in an increase in the sealing gap and an increase in the probability of dust intrusion;

[0007] High maintenance cost: To avoid failures of the driving mechanism, it is necessary to frequently stop the machine to clean the dust and replenish the lubricating oil. Especially in deep-hole drilling, the maintenance frequency increases with the increase of the operation depth, seriously affecting the construction efficiency and being unfavorable for energy conservation and consumption reduction of the rock drill. Summary of the Invention

[0008] The purpose of the present invention is to provide a propulsion beam of a rock drill that can provide dust protection for the driving device to solve the technical problems mentioned in the above background art.

[0009] To achieve the above purpose, the present invention provides the following technical solutions.

[0010] A rock drill propulsion beam, comprising a beam arm, a flexible sealing strip and a driving mechanism. A first side plate is fixed on one side of the beam arm with a C-shaped cross-section, and a second side plate is fixed on the other side. On the open side of the beam arm, two sliding seats capable of sliding along its length direction are installed. A connecting plate is fixedly connected between the two sliding seats. Guide rollers are respectively rotatably installed at the four top corners inside the beam arm. The flexible sealing strip bypasses each guide roller in sequence. The two ends of the flexible sealing strip are respectively fixed to the sides of the two sliding seats away from each other.

[0011] The flexible sealing strip, the connecting plate and the two sliding seats cooperate to seal the open side of the beam arm and form a dust-proof space inside the beam arm. The driving mechanism is arranged in the dust-proof space and is used to drive the sliding seat close to the second side plate to slide. An installation seat is installed on the sliding seat close to the second side plate, a first guiding part is provided on the other sliding seat, and a second guiding part is provided on the first side plate. The first guiding part and the second guiding part are used to guide the drill rod for linear feeding.

[0012] On the open side of the beam arm with a C-shaped cross-section, through the cooperation of the sliding seat, the connecting plate, the guide roller and the flexible sealing strip, a dynamic sealing structure is formed. As the sliding seat moves, the flexible sealing strip rotates around the guide roller, always keeping the seal of the open side and forming a dust-proof space wrapping the driving mechanism to isolate dust, reduce the wear and failure of the driving mechanism, reduce the maintenance cost, and improve the reliability and service life of the equipment.

[0013] Preferably, blocking strips are respectively fixed on the inner walls of the upper and lower sides of the beam arm and close to its open side. The upper and lower sides of the two sliding seats both have sliding grooves. The sliding seats are slidably clamped between the upper and lower blocking strips through the two sliding grooves. The connecting plate fits on the inner surface of the two blocking strips, and the flexible sealing strip slidably fits on the inner surface of the two blocking strips.

[0014] Preferably, two fan modules are installed on the top of the beam arm. The fan modules are used to suck and introduce external air into the dust-proof space.

[0015] Preferably, the driving mechanism includes a motor, a chain and a pair of sprockets. U-shaped seats are respectively fixed on the opposite sides of the first side plate and the second side plate. Shaft rods are rotatably installed on the two U-shaped seats. The two sprockets are respectively fixed on the shaft rods on the corresponding sides. A motor is fixed on one of the U-shaped seats, and the output shaft of the motor is correspondingly fixed to the end of the shaft rod on the same side. The chain is meshed and sleeved on the two sprockets and is respectively connected to both sides of the connecting seat at both ends.

[0016] Preferably, the connecting seat is fixed on the inner surface of the sliding seat close to the second side plate. One end of the connecting seat is fixed to one end of the chain, and an internally threaded cylinder is rotatably installed at the other end. A threaded rod is threadedly installed through the internally threaded cylinder, and the threaded rod is fixedly connected to the other end of the chain.

[0017] Preferably, seat plates are respectively fixed on both sides inside the beam arm. Lubricating mechanisms are provided on the sides of the two seat plates facing away from each other. The lubricating mechanism includes an oil storage tank, a telescopic cylinder, and an oil spraying mechanism. The oil storage tank is fixed on the side of the seat plate, and the filling port on the oil storage tank extends through to the outside of the beam arm. The telescopic cylinder is fixed on the side of the seat plate and is parallel to the beam arm. The oil spraying mechanism is arranged on the telescopic end of the telescopic cylinder. When the telescopic cylinder pushes the oil spraying mechanism to feed towards the corresponding side sprocket to the oil spraying position, the oil spraying mechanism is in extrusion fit with the teeth on the same side sprocket, so as to conduct and spray the lubricating oil in the oil storage tank on the sprocket to achieve lubrication.

[0018] Preferably, the oil spraying mechanism includes a cylinder body, a piston, a spring, a wedge-shaped extrusion head, a guide oil pipe, and an oil outlet pipe. The telescopic end of the telescopic cylinder extends into the cylinder body and is equipped with a piston. The piston is in close sliding fit with the inner wall of the cylinder body. The spring is installed in the cylinder body, with one end fixed to the piston and the other end fixed to the inner end wall of the side of the cylinder body away from the telescopic cylinder;

[0019] The wedge-shaped extrusion head is fixed on the end face of the side of the cylinder body away from the telescopic cylinder. The wedge-shaped extrusion head is in extrusion fit with the tooth inclined surface on the sprocket. One end of the guide oil pipe is communicated with the cylinder body, and the other end is communicated with the oil storage tank. A one-way valve A is installed near the cylinder body in the guide oil pipe. One end of the oil outlet pipe is communicated with the cylinder body, and the other end is equipped with a nozzle. A one-way valve B is installed near the cylinder body in the oil outlet pipe.

[0020] Preferably, the flow direction of the one-way valve A is from the guide oil pipe to the inside of the cylinder body, and the flow direction of the one-way valve B is from the cylinder body to the inside of the oil outlet pipe.

[0021] Preferably, the first guiding part includes a first mounting plate, an L-shaped connecting piece, and a J-shaped guiding piece. The first mounting plate is fixed on the sliding seat on the side close to the second side plate. The J-shaped guiding piece is fixed on the side of the first mounting plate through the L-shaped connecting piece. The drill rod passes through the J-shaped guiding piece.

[0022] Preferably, the second guiding part includes a second mounting plate, a fastener, and a semi-circular piece. The second mounting plate is fixed on the first side plate. The two semi-circular pieces are fixed on the side of the second mounting plate through the fastener. A guiding hole is formed between the two semi-circular pieces. The drill rod passes through the guiding hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] On the opening side of the beam arm with a C-shaped cross-section, through the cooperation of the sliding seat, the connecting plate, the guiding roller, and the flexible sealing strip, a dynamic sealing structure is formed. And as the sliding seat moves, the flexible sealing strip rotates around the guiding roller, always maintaining the seal of the opening side, forming a dust-proof space that wraps the driving mechanism, so as to isolate dust, reduce the wear and failure of the driving mechanism, reduce the maintenance cost, and improve the reliability and service life of the equipment;

[0025] The stop strip and the chute of the beam arm form a limiting sliding structure, enabling the sliding seat to slide stably and preventing it from coming off. The connecting plate and the flexible sealing strip are closely attached to the inner side of the stop strip, reducing the gap on the opening side, constructing a high-precision dust-proof and sealed space, a dust-proof barrier combining rigidity and flexibility, effectively coping with harsh environments, and providing long-term dust-proof for the driving device;

[0026] The fan module at the top of the beam arm sucks in air and guides it into the dust-proof space, achieving the effects of positive-pressure dust-proof and air-flow heat dissipation. It serves two purposes at once. The ventilation and heat dissipation cooperate with the mechanical sealing, capable of creating a clean and constant-temperature environment, ensuring the efficient and stable operation of the driving device, and being suitable for long-term operation;

[0027] The lubrication mechanism arranged inside the beam arm is formed by the cooperation of an oil storage tank, a telescopic cylinder and an oil injection mechanism, realizing automatic lubrication of the sprocket. When the telescopic cylinder pushes the oil injection mechanism close to the sprocket, the wedge-shaped extrusion head and the inclined surface of the sprocket teeth drive the piston in the cylinder to reciprocate. Lubricating oil is sucked from the oil storage tank to the cylinder through the oil guide pipe, and is sprayed onto the surface of the sprocket through the oil outlet pipe from the nozzle. This process requires no manual intervention, and the lubricating action is synchronized with the rotation of the sprocket. The periodic extrusion of the teeth automatically triggers oil injection, ensuring uniform spraying of the lubricating oil and reducing frictional losses;

[0028] At the same time, the lubrication mechanism is integrated inside the beam arm and is linked with the dust-proof space, avoiding the exposure of lubricating components to pollution, and being able to complete lubrication during the operation of the equipment without the need to stop and disassemble, significantly improving the convenience of maintenance. In the case of continuous operation without stopping, it can reduce the idle operation of the rock drill, which is beneficial to the energy conservation and consumption reduction of the rock drill;

[0029] The first guiding part and the second guiding part form a drill pipe guiding structure. The first guiding part moves with the drill pipe, and the second guiding part is fixed. The J-shaped guiding piece and the guiding hole guide the drill pipe doubly, realizing the combined guidance of dynamic and static, ensuring the straight feeding of the drill pipe, reducing deflection, improving the drilling accuracy, extending the service life of the drill pipe, and being able to adapt to drill holes of different depths. Description of the Drawings

[0030] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a partial structural schematic diagram of the surface of the C-shaped arm in the present invention;

[0032] Figure 3 It is Figure 2 One of the sectional structural schematic diagrams;

[0033] Figure 4 It is Figure 2 Another sectional structural schematic diagram;

[0034] Figure 5 It is a schematic diagram of the structural cooperation between the flexible sealing strip and the stop strip in the present invention;

[0035] Figure 6 Schematic diagram of the detailed structure of the drive mechanism in the present invention;

[0036] Figure 7 Schematic diagram of the structure of the lubrication mechanism in the present invention;

[0037] Figure 8 One of the partial structure schematic diagrams of the fuel injection mechanism in the present invention;

[0038] Figure 9 Another partial structure schematic diagram of the fuel injection mechanism in the present invention;

[0039] Figure 10 Schematic diagram of the structure of the second guiding part in the present invention;

[0040] Figure 11 Schematic diagram of the structure of the first guiding part in the present invention.

[0041] In the figure: 01, dust-proof space; 02, fan module; 03, mounting seat; 04, first guiding part; 041, first mounting plate; 042, L-shaped connecting piece; 043, J-shaped guiding piece; 05, second guiding part; 051, second mounting plate; 052, fastener; 053, semi-circular part; 054, guiding hole; 1, first side plate; 2, second side plate; 3, beam arm; 301, retaining strip; 31, sliding seat; 311, sliding groove; 312, connecting plate; 32, plate seat; 33, connecting seat; 331, internal thread cylinder; 332, threaded rod; 4, flexible sealing strip; 41, guiding roller; 5, drive mechanism; 51, U-shaped seat; 52, shaft rod; 53, sprocket; 54, motor; 541, lead-out hole; 55, chain; 6, lubrication mechanism; 7, oil storage tank; 71, filling port; 8, telescopic cylinder; 9, fuel injection mechanism; 91, cylinder body; 92, piston; 93, spring; 94, wedge-shaped extrusion head; 95, oil guide pipe; 951, check valve A; 96, oil outlet pipe; 961, check valve B; 97, nozzle. Specific embodiments

[0042] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0043] Embodiment 1

[0044] Please refer to Figures 1 - 11 , the present invention provides a rock drill propulsion beam, including a beam arm 3, a flexible sealing strip 4 and a drive mechanism 5. A first side plate 1 is fixed on one side of the beam arm 3 with a C-shaped cross-section, and a second side plate 2 is fixed on the other side. Two sliding seats 31 that can slide along its length direction are installed on the open side of the beam arm 3, and a mounting seat 03 is installed on the sliding seat 31 close to the second side plate 2.

[0045] Specifically, the impact rock drilling mechanism is installed on the mounting base 03. The driving device inside the impact rock drilling mechanism drives the drill rod to reciprocate and impact, so as to achieve rock drilling and boring. During this process, by the operation of the driving mechanism 5, the sliding seat 31 close to one side of the second side plate 2 can be driven to feed, and then drive the mounting base 03 and the impact rock drilling mechanism to feed, so as to realize the feed of the drill rod and ensure the drilling depth.

[0046] A connecting plate 312 is fixedly connected between the two sliding seats 31. Guide rollers 41 are respectively rotatably installed at the four vertexes inside the beam arm 3. The strip-shaped flexible sealing strip 4 bypasses each guide roller 41 in turn. The two ends of the flexible sealing strip 4 are respectively fixed to the sides of the two sliding seats 31 away from each other. The flexible sealing strip 4, the connecting plate 312 and the two sliding seats 31 cooperate to seal the opening side of the beam arm 3 and form a dust-proof space 01 inside the beam arm 3. Among them, the driving mechanism 5 is arranged in the dust-proof space 01 to achieve dust-proof protection, avoid the direct exposure of the driving mechanism 5 and being polluted by dust, and reduce the frequency of dirt cleaning and maintenance.

[0047] In addition, as Figure 4 shown, since the connecting plate 312 is fixed between the two sliding seats 31, after the flexible sealing strip 4 bypasses each guide roller 41, one end is fixed to one sliding seat 31 and the other end is fixed to the other sliding seat 31. Then, when the drill rod feeds, by the connection function of the connecting plate 312, the two sliding seats 31 move synchronously. When the two sliding seats 31 move synchronously, the flexible sealing strip 4 can be pulled to move synchronously around the guide roller 41, realizing the follow-up dynamic adjustment of the sealing structure on the opening side of the beam arm 3 and still maintaining the sealing state of the side opening of the beam arm 3.

[0048] As Figure 3 shown, on the inner walls of the upper and lower sides of the beam arm 3 and close to its opening side, stop strips 301 are respectively fixed. The upper and lower sides of the two sliding seats 31 both have sliding grooves 311. The sliding seats 31 are limited and slidably clamped between the upper and lower stop strips 301 through the two sliding grooves 311, that is, the upper and lower stop strips 301 are respectively slidably clamped in the sliding grooves 311. The stop strips 301 and the beam arm 3 form a T-shaped structure locally, and clamping the sliding seats 31 between the two stop strips 301 not only provides the sliding ability for the sliding seats 31, but also plays a role in limiting and preventing detachment, avoiding the sliding seats 31 falling off the beam arm 3 and improving the installation stability of the sliding seats 31.

[0049] Among them, as Figure 4 shown, the connecting plate 312 fits on the inner surface of the two stop strips 301. As Figure 5 shown, the flexible sealing strip 4 slidably fits on the inner surface of the two stop strips 301, minimizing the gaps through which dust enters and further improving the dust-proof effect.

[0050] Please refer to Figure 4 and Figure 6, the driving mechanism 5 includes a motor 54, a chain 55 and a pair of sprockets 53. U-shaped seats 51 are fixed on the opposite sides of the first side plate 1 and the second side plate 2. Shaft rods 52 are rotatably installed on both U-shaped seats 51. The two sprockets 53 are respectively fixed on the shaft rods 52 on the corresponding sides. Among them, the motor 54 is fixed on the U-shaped seat 51 on the side close to the second side plate 2, and as Figure 2 shown, an extraction hole 541 is provided at the position corresponding to the motor 54 on the beam arm 3. The motor 54 passes through the extraction hole 541 and extends to the outside of the beam arm 3, so that part of the motor 54 is exposed, which is convenient for disassembling and maintaining it. Moreover, the motor 54 has a housing outside, which has a self-dust-proof function. At the same time, the space between the motor 54 and the extraction hole 541 is sealed to prevent dust from entering the dust-proof space 01 through the gap between the two.

[0051] The output shaft of the motor 54 is fixedly connected to the end of the shaft rod 52 on the same side. The chain 55 is meshed and sleeved on the two sprockets 53, and the two ends are respectively connected to both sides of the connecting seat 33. Among them, the connecting seat 33 is fixed on the inner surface of the sliding seat 31 on the side close to the second side plate 2.

[0052] By the operation of the motor 54, its output shaft drives the shaft rod 52 on the same side to rotate, and then drives the sprocket 53 on the same side to rotate. The rotating sprocket 53 meshes and drives the chain 55 to run, and drives the sprocket 53 on the other side to rotate. Under the traction of the chain 55, the connecting seat 33 and the sliding seat 31 connected thereto can be driven to move along the length direction of the beam arm 3 to realize the feeding and retraction of the drill rod.

[0053] Among them, one end of the connecting seat 33 is fixed to one end of the chain 55. As Figure 6 shown, the other end is rotatably installed with an internally threaded cylinder 331. A threaded rod 332 is installed through the internally threaded cylinder 331 in a penetrating manner. The threaded rod 332 is fixedly connected to the other end of the chain 55. By rotating and adjusting the internally threaded cylinder 331, under the cooperation of the internal thread of the internally threaded cylinder 331 and the external thread of the threaded rod 332, the threaded rod 332 can be driven to perform translational adjustment along the extension direction of the chain 55, so as to realize the adjustment of the tension of the chain 55, reduce transmission slip and improve traction efficiency.

[0054] Embodiment 2

[0055] Although the dust-proof space 01 is well sealed, there will still be some small structural gaps communicating with the outside. In order to prevent dust from entering the dust-proof space 01 through such gaps, this embodiment is proposed in the present invention. The difference between this embodiment and Embodiment 1 is:

[0056] Please refer to Figure 1 and Figure 2, two blower modules 02 are installed at the top of the beam arm 3. By the operation of the two blower modules 02, external air can be sucked and introduced into the dust-proof space 01. The air pressure in the dust-proof space 01 increases to form an internal positive pressure, and the gas will discharge from the above-mentioned fine gaps, forming a flowing air current. On the one hand, it can prevent dust from entering the dust-proof space 01 through the fine gaps. On the other hand, it can dissipate heat from the components in the dust-proof space 01, killing two birds with one stone.

[0057] In addition, a filter screen is installed at the air inlet cylinder port of the blower module 02 to filter and intercept dust.

[0058] Embodiment III

[0059] Please refer to Figure 4 and Figure 7 , the difference between this embodiment and Embodiment II is:

[0060] On both sides inside the beam arm 3, seat plates 32 are respectively fixed. Lubricating mechanisms 6 are provided on the sides of the two seat plates 32 facing away from each other. The lubricating mechanism 6 includes an oil storage tank 7, a telescopic cylinder 8, and an oil spraying mechanism 9. The oil storage tank 7 is fixed on the side of the seat plate 32, and the filling port 71 on the oil storage tank 7 extends through to the outside of the beam arm 3, facilitating the filling of lubricating oil into the oil storage tank 7 from the outside. The telescopic cylinder 8 is fixed on the side of the seat plate 32 and is parallel to the beam arm 3. The oil spraying mechanism 9 is arranged on the telescopic end of the telescopic cylinder 8.

[0061] When the telescopic cylinder 8 pushes the oil spraying mechanism 9 to feed to the corresponding sprocket 53 to the oil spraying position, the oil spraying mechanism 9 is in extrusion fit with the teeth on the same-side sprocket 53 to conduct and spray the lubricating oil in the oil storage tank 7 onto the sprocket 53 to achieve lubrication.

[0062] Specifically, the oil spraying mechanism 9 includes a cylinder body 91, a piston 92, a spring 93, a wedge-shaped extrusion head 94, an oil guide pipe 95, and an oil outlet pipe 96. As Figures 7 - 9 shown, the telescopic end of the telescopic cylinder 8 extends into the cylinder body 91 and is equipped with a piston 92. The piston 92 is in close sliding fit with the inner wall of the cylinder body 91. The spring 93 is installed in the cylinder body 91, with one end fixed to the piston 92 and the other end fixed to the inner end wall of the side of the cylinder body 91 away from the telescopic cylinder 8.

[0063] The wedge-shaped extrusion head 94 is fixed on the end face of the cylinder body 91 away from the telescopic cylinder 8. The wedge-shaped extrusion head 94 is in extrusion fit with the tooth slope on the sprocket 53. One end of the oil guide pipe 95 communicates with the circumferential side of the cylinder body 91 and near the wedge-shaped extrusion head 94, and the other end communicates with the oil storage tank 7. A one-way valve A951 is installed in the oil guide pipe 95 near the cylinder body 91. Among them, as Figure 8 shown by the arrow indication, the flow direction of the one-way valve A951 is from the oil guide pipe 95 to the inside of the cylinder body 91.

[0064] One end of the oil outlet pipe 96 communicates with the circumferential side of the cylinder body 91 near the wedge-shaped extrusion head 94, and the other end is equipped with a nozzle 97. A one-way valve B961 is installed inside the oil outlet pipe 96 near the cylinder body 91. Among them, as Figure 9 indicated by the arrow in

[0065] The guiding direction of the one-way valve B961 is from the cylinder body 91 to the inside of the oil outlet pipe 96.

[0066] The specific working principle of oil injection lubrication is as follows:

[0067] When it is necessary to lubricate the sprocket 53 and the chain 55, the telescopic cylinder 8 extends to work, pushing the cylinder body 91 to feed towards the sprocket 53 until it reaches the oil injection position. When the sprocket 53 rotates, the teeth on it periodically undergo inclined plane extrusion with the wedge-shaped extrusion head 94. The wedge-shaped extrusion head 94 is oppressed to make the cylinder body 91 move towards the telescopic cylinder 8 side. At this time, the piston 92 moves relative to the cylinder body 91, and the spring 93 is compressed and stores energy. The piston 92 presses the lubricating oil in the cylinder body 91 into the oil outlet pipe 96, and finally sprays it onto the sprocket 53 through the nozzle 97;

[0068] When the wedge-shaped extrusion head 94 gradually moves between the two teeth, the extrusion movement amount of the teeth on the wedge-shaped extrusion head 94 gradually decreases. Under the elastic force of the spring 93, the cylinder body 91 is pushed to reset. At this time, the piston 92 sucks the lubricating oil in the oil storage tank 7 into the cylinder body 91 through the oil guide pipe 95 for replenishment;

[0069] Example 4

[0070] Please refer to Figure 1 、 Figure 10 and Figure 11 The difference between this embodiment and Embodiment 3 is that:

[0071] A first guiding portion 04 is provided on the sliding seat 31 on the side away from the second side plate 2, and a second guiding portion 05 is provided on the first side plate 1;

[0072] Among them, the first guiding portion 04 includes a first mounting plate 041, an L-shaped connecting member 042, and a J-shaped guiding member 043. The first mounting plate 041 is fixed on the sliding seat 31 on the side close to the second side plate 2, and the J-shaped guiding member 043 is fixed to the side portion of the first mounting plate 041 through the L-shaped connecting member 042;

[0073] The second guiding part 05 includes a second mounting plate 051, fasteners 052 and semi-circular parts 053. The second mounting plate 051 is fixed on the first side plate 1. The two semi-circular parts 053 are fixed on the side of the second mounting plate 051 through the fasteners 052. A guiding hole 054 is formed between the two semi-circular parts 053, and the drill pipe passes through the guiding hole 054.

[0074] The J-shaped guiding parts 043 and the guiding holes 054 are arranged along the length direction of the drill pipe. The drill pipe passes through the J-shaped guiding parts 043 and the guiding holes 054 in sequence, which can guide the drill pipe to perform linear feeding and retracting, play a role in guiding and limiting the drill pipe, and avoid excessive bending of the drill pipe during the drilling process.

[0075] In addition, the position of the second guiding part 05 is fixed, while the first guiding part 04 is installed on one of the sliding seats 31, and its position can move synchronously with the feeding and retracting of the drill pipe. On the one hand, it realizes the adaptive dynamic adjustment of the guiding position. On the other hand, it avoids interfering with the movement process of the mounting seat 03 and ensures that the drill pipe can reach the required depth.

[0076] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A rock drill propulsion beam, comprising a beam arm (3) and a drive mechanism (5), characterized in that: It further comprises a flexible sealing strip (4); On one side of the beam arm (3) with a C-shaped cross-section, a first side plate (1) is fixed, and on the other side, a second side plate (2) is fixed; On the open side of the beam arm (3), two sliding seats (31) capable of sliding along its length direction are installed, and a connecting plate (312) is fixedly connected between the two sliding seats (31); Guide rollers (41) are respectively rotatably installed at the four top corners inside the beam arm (3), and the flexible sealing strip (4) successively bypasses each of the guide rollers (41); Both ends of the flexible sealing strip (4) are respectively fixed to the sides of the two sliding seats (31) away from each other; The flexible sealing strip (4), the connecting plate (312) and the two sliding seats (31) cooperate to seal the open side of the beam arm (3) and form a dust-proof space (01) inside the beam arm (3); The drive mechanism (5) is arranged in the dust-proof space (01) and is used to drive the sliding seat (31) on the side close to the second side plate (2) to slide; An installation seat (03) is installed on the sliding seat (31) on the side close to the second side plate (2), a first guiding part (04) is provided on the other sliding seat (31), and a second guiding part (05) is arranged on the first side plate (1); The first guiding part (04) and the second guiding part (05) are used to guide the drill rod for directional drilling.

2. The rock drill propulsion beam according to claim 1, characterized in that: Blocking strips (301) are respectively fixed on the inner walls of the upper and lower sides of the beam arm (3) and close to its open side; Both the upper and lower sides of the two sliding seats (31) have sliding grooves (311), and the sliding seats (31) are slidably clamped between the upper and lower blocking strips (301) through the two sliding grooves (311); The connecting plate (312) is attached to the inner surface of the two blocking strips (301); The flexible sealing strip (4) is slidably attached to the inner surface of the two blocking strips (301).

3. The rock drill propulsion beam according to claim 1, characterized in that: Two fan modules (02) are installed on the top of the beam arm (3), and the fan modules (02) are used to suck and introduce external air into the dust-proof space (01).

4. The rock drill propulsion beam according to claim 1, characterized in that: The drive mechanism (5) comprises a motor (54), a chain (55) and a pair of sprockets (53); U-shaped seats (51) are respectively fixed on the opposite sides of the first side plate (1) and the second side plate (2), and shaft rods (52) are rotatably installed on both U-shaped seats (51); The two sprockets (53) are respectively fixed on the corresponding shaft rods (52); A motor (54) is fixed on one of the U-shaped seats (51), and the output shaft of the motor (54) is fixedly connected to the end of the shaft rod (52) on the same side; The chain (55) is meshed and sleeved on the two sprockets (53), and both ends are respectively connected to both sides of the connecting seat (33).

5. A rock drill feed beam according to claim 4, characterized in that: The connecting seat (33) is fixed on the inner surface of the sliding seat (31) on one side close to the second side plate (2); One end of the connecting seat (33) is fixed to one end of the chain (55), and the other end is rotatably installed with an internally threaded cylinder (331); A threaded rod (332) is threadedly installed through the internally threaded cylinder (331), and the threaded rod (332) is fixedly connected to the other end of the chain (55).

6. A rock drill feed beam according to claim 5, characterized in that: Seat plates (32) are respectively fixed on both sides inside the beam arm (3); Lubricating mechanisms (6) are provided on the mutually facing sides of the two seat plates (32); The lubricating mechanism (6) includes an oil storage tank (7), a telescopic cylinder (8) and an oil spraying mechanism (9); The oil storage tank (7) is fixed on the side of the seat plate (32), and a filling port (71) provided on the oil storage tank (7) extends through to the outside of the beam arm (3); The telescopic cylinder (8) is fixed on the side of the seat plate (32) and is parallel to the beam arm (3), and the oil spraying mechanism (9) is arranged on the telescopic end of the telescopic cylinder (8); When the telescopic cylinder (8) pushes the oil spraying mechanism (9) to feed to the corresponding side of the sprocket (53) to the oil spraying position, the oil spraying mechanism (9) is in extrusion fit with the teeth on the same side of the sprocket (53), so as to guide and spray the lubricating oil in the oil storage tank (7) on the sprocket (53) to achieve lubrication.

7. A rock drill feed beam according to claim 6, characterized in that: The oil spraying mechanism (9) includes a cylinder body (91), a piston (92), a spring (93), a wedge-shaped extrusion head (94), an oil guide pipe (95) and an oil outlet pipe (96); The telescopic end of the telescopic cylinder (8) extends into the cylinder body (91) and is installed with the piston (92), and the piston (92) is in close sliding fit with the inner wall of the cylinder body (91); The spring (93) is installed in the cylinder body (91), and one end is fixed to the piston (92), and the other end is fixed to the inner end wall of the side of the cylinder body (91) away from the telescopic cylinder (8); The wedge-shaped extrusion head (94) is fixed on the end face of the cylinder body (91) away from the telescopic cylinder (8), and the wedge-shaped extrusion head (94) is in extrusion fit with the tooth slope on the sprocket (53); One end of the oil guide pipe (95) is communicated with the cylinder body (91), and the other end is communicated with the oil storage tank (7), and a one-way valve A (951) is installed near the cylinder body (91) in the oil guide pipe (95); One end of the oil outlet pipe (96) is communicated with the cylinder body (91), and the other end is installed with a nozzle (97); A one-way valve B (961) is installed near the cylinder body (91) in the oil outlet pipe (96).

8. A rock drill feed beam according to claim 7, characterized in that: The flow direction of the one-way valve A (951) is from the oil guide pipe (95) to the inside of the cylinder body (91); The flow guiding direction of the one-way valve B (961) is from the cylinder body (91) into the oil outlet pipe (96).

9. A rock drill propulsion beam according to claim 1, characterized in that: The first guiding part (04) includes a first mounting plate (041), an L-shaped connecting piece (042), and a J-shaped guiding piece (043); The first mounting plate (041) is fixed on the sliding seat (31) on the side close to the second side plate (2), and the J-shaped guiding piece (043) is fixed on the side of the first mounting plate (041) through the L-shaped connecting piece (042); The drill pipe passes through the J-shaped guiding piece (043).

10. A rock drill propulsion beam according to claim 1, characterized in that: The second guiding part (05) includes a second mounting plate (051), a fastener (052), and a semi-circular part (053); The second mounting plate (051) is fixed on the first side plate (1), and the two semi-circular parts (053) are fixed on the side of the second mounting plate (051) through the fastener (052); A guiding hole (054) is formed between the two semi-circular parts (053), and the drill pipe passes through the guiding hole (054).

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