Telescopic boom assembly and drill jumbo thereof

Abstract

The invention belongs to the technical field of tunnel equipment, and particularly relates to a telescopic boom assembly and a drill jumber.The telescopic boom assembly comprises a boom base, a rotary boom is connected to the boom base, a left drill boom and a right drill boom are connected to the rotary boom, the left drill boom and the right drill boom are of the same structure, and the rotary boom comprises a large rotary arm fixed to the boom base; two telescopic oil cylinders which are distributed up and down are connected to the rotary large arm, the two telescopic oil cylinders are connected with a left rotary telescopic arm and a right rotary telescopic arm respectively, and the left rotary telescopic arm and the right rotary telescopic arm are both connected with the rotary large arm in a sliding mode; and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel equipment, in particular to a telescopic boom assembly and a rock drilling trolley thereof. Background Art

[0002] The rock drilling rig is an important rock drilling equipment used in tunnel and underground engineering using the drill and blast method. It is mainly composed of the following parts: a steel structure frame, which supports the main structure of the entire equipment to ensure its stability and safety; a drill arm, which serves as the support, positioning and propulsion mechanism of the rock drill and can flexibly adjust the position and angle of the rock drill; a rock drill, which is responsible for the core component of crushing and cutting rocks and is usually driven by hydraulics; a hydraulic system, which provides the power and control functions required by the rock drilling rig, including key components such as hydraulic pumps, hydraulic cylinders and hydraulic control valves. The rock drilling rig uses the hydraulic pump in the hydraulic system to suck liquid from the oil tank and transport it to the hydraulic cylinder through hydraulic pipelines. The high-pressure liquid drives the piston in the hydraulic cylinder to move, thereby transmitting force to the working part of the rock drill to achieve rock drilling operations.

[0003] A Chinese patent with application number CN202420860201.8 discloses a connecting rod swing arm mechanism and a rock drilling rig. When it is necessary to adjust the pitch angle of the boom relative to the slewing seat, the telescopic ends of the two telescopic drive members are controlled to telescope synchronously to adjust the pitch angle of the boom relative to the slewing seat. Since the two telescopic drive members transmit force through the articulated seats distributed on both sides, the balance of force transmitted by the boom is ensured, thereby reducing the influence of the torque generated when the rock drilling rig is working on the boom, reducing the offset of both sides of the boom, and reducing construction errors and the risk of the boom tipping over.

[0004] The Chinese patent application number CN202210700621.5 discloses a boom and a rock drilling trolley. In this application, a fixed frame, a movable frame and a pipe clamp assembly are arranged in a pipe clamp mechanism, the fixed frame is connected to the fixed arm section of the telescopic boom, and the movable frame is connected to the movable arm section of the telescopic boom. The movable frame is provided with a plurality of pipe clamp assemblies for clamping hydraulic pipes and cables. The plurality of pipe clamp assemblies can clamp and fix the pipes or cables, so that the pipes or cables are relatively evenly distributed on one side of the telescopic boom, so that when the telescopic boom is extended and retracted, the pipe clamp assembly drives the pipes or cables to slide synchronously with the telescopic boom, and there is no problem of local pipes or cables being severely bent and damaged. The pipe clamp assembly constrains the pipes or cables, so as to avoid the telescopic boom causing excessive position changes of the pipes or cables during operation and friction with other mechanisms, so as to better protect the pipes and cables. In the above invention, the pipe clamp assembly includes a detachably connected pipe clamp single piece, and at least two pipe clamp single pieces are combined to form a closed clamping space, which is convenient for quick disassembly and assembly of pipes and cables. In the above invention, the central angle corresponding to the arc-shaped portion of the single pipe clamp is less than 180°, which can compress the spacing between the inner walls of the closed clamping space to be smaller than the diameter of the arc-shaped portion, and can also adjust the spacing between the inner walls of the closed clamping space to be larger than the diameter of the arc-shaped portion, so as to meet the clamping requirements of pipes or cables of different diameters. In the above invention, the additional pipe clamp is located at the bottom of the pipe clamp assembly, and the pipe installed in the additional pipe clamp can be protected by the entire pipe clamp assembly to avoid damage to the pipe. In the above invention, multiple pipe clamp assemblies are concentrically arranged along the length direction of the telescopic arm to prevent unnecessary deflection and damage to the pipe or cable. In the above invention, two groups of lifting mechanisms are symmetrically hinged at the bottom of the telescopic boom, and two groups of leveling mechanisms are symmetrically hinged at the bottom of the telescopic boom. The telescopic boom protects the lifting mechanism and leveling mechanism located below it to prevent falling rocks in the tunnel from hitting the lifting mechanism and leveling mechanism. There is no need to set up additional protective covers for the lifting mechanism and leveling mechanism, which can avoid the large size of the protective covers blocking the operator's line of sight, causing difficulties in drilling and reducing construction efficiency. In the above invention, the telescopic boom and the lifting mechanism can be rotated in the horizontal and vertical directions by lifting seat 1 and lifting seat 2; the leveling base can be rotated in the vertical and horizontal directions relative to the telescopic boom by the cooperation of leveling seat 1 and leveling seat 2, thereby realizing the spatial posture adjustment of the drilling actuator. In the above invention, by reasonably arranging the hinge points of each mechanism, the distance between each hinge point and the ratio of the stroke change of the lifting mechanism and the leveling mechanism have a quantitative relationship, and automatic leveling can be achieved through the hydraulic system without the need to set up additional sensors. In the above invention, a hydraulically controlled one-way valve is provided in the hydraulic leveling system to overcome the overspeed and impact caused by the deadweight of the drilling actuator, and a balancing valve is provided in the return oil line to make the system run more smoothly.In the above invention, a swing mechanism and an actuator are provided on the leveling base, and the actuator includes a tilt cylinder. The posture of the drilling actuator on the propulsion beam base is adjusted by the swing mechanism and the tilt cylinder to realize the drilling construction of the face. However, the following problems still exist in practical applications, specifically: 1. Existing booms generally use a triangular structure, which will present a semi-hexagonal working range when pitching or swinging, and cannot fit the tunnel section during tunnel construction; 2. There will be a lot of blind spots during construction. If the tunnel section is circular, the lower half is basically unreachable. Excavation can only be done by constantly moving vehicles or manually, which increases the operation time and labor intensity of the process. 3. During the rock drilling process, the drill bit needs to be cooled down and water needs to be sprayed on the rock soil to facilitate drilling through the rock layer. Most of the existing cooling and water injection structures use soft water pipes mounted near the drill bit. The pipes are easily squeezed and damaged during movement. At the same time, the pipelines are chaotic and it is difficult to ensure the stability of the pipelines.

[0005] Therefore, the present invention provides a telescopic boom assembly and a rock drilling rig thereof to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a telescopic boom assembly and a rock drilling trolley thereof, and provides a brand-new boom structure, with a four-stage boom, which can be rotated, two-stage telescopic, swinging, pitching and other six degrees of freedom. On the existing basis, the telescopic stroke of the boom can be adjusted to adapt to the changes in the size of different tunnel sections. The boom parallel function is designed to always maintain the parallel function of the propulsion beam during the boom pitching action, effectively shortening the hole-matching time.

[0007] The present invention comprises a boom seat, the boom seat is connected to a swivel boom, the swivel boom is connected to a left drill boom and a right drill boom, and the left drill boom and the right drill boom have the same structure; The slewing arm frame includes a slewing arm fixed on the arm frame seat, and the slewing arm is connected to two adjusting oil cylinders distributed up and down, and the two adjusting oil cylinders are respectively connected to a left slewing telescopic arm and a right slewing telescopic arm, and the left slewing telescopic arm and the right slewing telescopic arm are both slidably connected to the slewing arm; The left drilling arm includes a boom rotatably connected to the left rotating telescopic arm, a pitch cylinder 1 and a pitch cylinder 2 are connected between the boom and the left rotating telescopic arm, the pitch cylinder 1, the pitch cylinder 2 are fixedly connected to the left rotating telescopic arm, the other ends of the pitch cylinder 1 and the pitch cylinder 2 are rotatably connected to the boom, the boom is connected to the telescopic cylinder, the other ends of the telescopic cylinder are connected to the forearm, the forearm is connected to the rotating cylinder, the other end of the rotating cylinder is connected to the supporting frame, the supporting frame is connected to the propulsion beam assembly, the rotating action of the propulsion beam assembly of ±180 degrees is realized by the rotating cylinder, the boom and the propulsion beam assembly are connected with a pitch cylinder 3, the supporting frame is connected to the supporting cylinder, the other end of the supporting cylinder is connected to the propulsion beam assembly.

[0008] Preferably, a rotating sleeve is connected between the slewing arm and the arm support seat, the rotating sleeve is rotatably connected to the arm support seat, the rotating sleeve is fixedly connected to the slewing arm, the rotation of the rotating sleeve drives the slewing arm to rotate synchronously, the rotating sleeve is coaxially fixedly connected to an adjusting gear ring, the adjusting gear ring is meshed with an adjusting gear rotatably connected to the arm support seat, and the adjusting gear is connected to a reduction motor placed on the arm support seat.

[0009] Preferably, a limited clamping mechanism is arranged inside the rotating sleeve, and the limited clamping mechanism comprises a clamping frame fixedly connected to the arm support seat, and a limited sleeve coaxially arranged with the rotating sleeve is fixedly connected to the clamping frame, and the limited sleeve is arranged at one end of the rotating sleeve and is fixedly connected to a plurality of hydraulic sleeves with equal circumference distribution, and a hydraulic rod is slidably connected inside the hydraulic sleeve, and a clamping block is connected to one end of the hydraulic rod away from the hydraulic sleeve, and the hydraulic rod and the hydraulic sleeve are connected by a spring; A telescopic piston is coaxially slidably connected inside the hydraulic casing, and the hydraulic casing is connected to an external pressure supply structure. The hydraulic rod can be telescoped by supplying pressure to the hydraulic casing.

[0010] Preferably, the hydraulic sleeve is coaxially fixedly connected with a buffer bin at one end close to the rotating sleeve, an electromagnetic fluid valve is fixedly connected between the buffer bin and the hydraulic sleeve, and the electromagnetic fluid valve is connected to an external power supply; A buffer plate is coaxially slidably connected inside the buffer bin, and the buffer plate and the buffer bin are connected via a spring.

[0011] Preferably, the propulsion beam assembly includes a base beam connected to the support cylinder, a rotating screw is rotatably connected to the base beam, the rotating screw is threadedly connected to a sliding base slidably connected to the base beam, a sliding frame is connected to the sliding base, a fixed bracket is fixedly connected to one end of the sliding frame away from the rotating arm, and a rock drill is connected to the fixed bracket.

[0012] Preferably, the rotating screw is hollow, and a liquid protection tube is rotatably connected to the axis of the rotating screw. A liquid hose is connected to the inside of the liquid protection tube, and the liquid hose is a corrugated telescopic tube. One end of the liquid hose is placed in a liquid storage tank connected to the lower end of the base beam, and a micro water pump is connected to the inside of the liquid storage tank. A liquid supply hose is connected to the liquid storage tank, and the other end of the liquid supply hose is placed in a liquid storage tank connected to the lower end of the base beam, and a micro water pump is connected to the inside of the liquid storage tank, and the water outlet end of the micro water pump is connected to the liquid supply hose.

[0013] Preferably, a depth sensor is fixedly connected to the propulsion beam assembly, and the depth sensor is connected to a display screen connected to the boom seat, so that the drilling depth is fed back on the display screen in real time.

[0014] A rock drilling trolley also includes a frame, track running wheels, multiple pulley blocks for pulling the frame to move, and legs above the frame, wherein the pulley blocks are connected to an external winch lifting system through a steel wire rope; The slide system is arranged inside the frame, and the slide system comprises multiple slideways, a slide, and a lifting cylinder. The slide moves under the action of the lifting cylinder, and the telescopic boom assembly is connected to the frame through a boom seat.

[0015] The present invention improves the existing inclined shaft expansion and slag removal equipment and has the following beneficial effects: 1. By setting up the slewing boom, pitch cylinder 1, pitch cylinder 2, pitch cylinder 3, big arm, small arm, rotating cylinder, supporting cylinder, supporting frame and other mechanisms, the boom can be effectively moved in the six degrees of freedom of rotation, extension, swing and pitch; 2. The self-parallel function is effectively realized by setting the pitch cylinder 3, pitch cylinder 2, propulsion beam assembly and other structures, which can perform drilling operations quickly and accurately; 3. By setting the limit sleeve, hydraulic sleeve, hydraulic rod, clamping block and other structures, the problem of self-rotation of the rotating sleeve and the slewing arm under the action of strong impact force is effectively solved; 4. Through the hollow rotating screw, liquid protection tube, corrugated expansion tube, liquid storage tank and micro water pump and other structures, the liquid supply cooling of the drill bit and the water spraying treatment of the drilling position are effectively realized, while avoiding the clutter of pipelines, causing pipeline rupture and leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The arm support assembly of the present invention is shown in FIG. Figure 1 .

[0017] Figure 2 It is a schematic diagram of the rotary arm support of the present invention.

[0018] Figure 3 It is a schematic diagram of the left drill arm of the present invention.

[0019] Figure 4 The arm support assembly of the present invention is shown in FIG. Figure 2 .

[0020] Figure 5 It is a schematic diagram of the limiting sleeve and its connecting piece of the present invention.

[0021] Figure 6 It is a cross-sectional schematic diagram of the limiting sleeve and its connecting piece of the present invention.

[0022] Figure 7 This is a schematic diagram of the rotating screw and its connecting parts.

[0023] Figure 8 It is a cross-sectional schematic diagram of the rotating screw and its connecting member of the present invention.

[0024] Fig. 9 Schematic diagram of the trolley system of the present invention.

[0025] Figure numerals: 1, arm support; 2, slewing arm support; 3, left drilling arm; 4, right drilling arm; 5, slewing boom; 6, adjusting cylinder; 7, left slewing telescopic arm; 8, right slewing telescopic arm; 9, boom; 10, pitch cylinder 1; 11, pitch cylinder 2; 12, telescopic cylinder; 13, small arm; 14, rotating cylinder; 15, support frame; 16, propulsion beam assembly; 17, pitch cylinder 3; 18, support cylinder; 19, rotating sleeve; 20, adjusting gear ring; 21, adjusting 1. Gear; 22. Speed ​​reducer; 23. Clamping frame; 24. Limit sleeve; 25. Hydraulic sleeve; 26. Hydraulic rod; 27. Clamping block; 28. Telescopic piston; 29. ​​Buffer bin; 30. Buffer plate; 31. Base beam; 32. Rotating screw; 33. Sliding base; 34. Sliding frame; 36. Liquid protection pipe; 37. Liquid hose; 39. Liquid supply hose; 40. Frame; 41. Track walking wheel; 42. Outrigger; 43. Slide; 44. Slide. DETAILED DESCRIPTION

[0026] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 9 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0027] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] The present invention includes a boom seat 1, which is connected to a frame 40 so that the boom seat 1 slides with the frame 40 to realize the advancement of the boom seat 1 in the well. A swivel boom 2 is connected to the boom seat 1, and a left drilling arm 3 and a right drilling arm 4 are connected to the swivel boom 2. The drilling arm and the right drilling arm 4 have the same structure. The subsequent rock drilling mechanism is supported by the left drilling arm 3 and the right drilling arm 4. The swivel boom 2 includes a swivel boom 5 fixed to the boom seat 1, and two adjusting oil cylinders 6 distributed up and down are connected to the swivel boom 5. The two adjusting oil cylinders 6 are respectively connected to a left swivel telescopic arm 7 and a right swivel telescopic arm 8. The left swivel telescopic arm 7 and the right swivel telescopic arm 8 are both slidably connected to the swivel boom 5. The telescopic movement of the adjusting oil cylinder 6 drives the telescopic movement of the left swivel telescopic arm 7 and the right swivel telescopic arm 8, thereby realizing the adjustment of the distance between the left drilling arm 3 and the right drilling arm 4.

[0029] The left drilling arm 3 includes a boom 9 rotatably connected to the left rotary telescopic arm 7, a pitch cylinder 10 and a pitch cylinder 2 11 are connected between the boom 9 and the left rotary telescopic arm 7, the pitch cylinder 10, the pitch cylinder 2 11 are fixedly connected to the left rotary telescopic arm 7, the other ends of the pitch cylinder 10 and the pitch cylinder 2 11 are rotatably connected to the boom 9, and the pitch or swing of the boom 9 is driven during the rotation of the pitch cylinder 2 11, thereby realizing the adjustment of the pitch or swing of the propulsion beam assembly 16, the boom 9 is connected to a telescopic cylinder 12, the other end of the telescopic cylinder 12 is connected to a forearm 13, the telescopic adjustment of the forearm 13 is realized by the telescopic movement of the telescopic cylinder 12, and the forearm 13 is connected to a rotating cylinder 14, The other end of the rotating cylinder 14 is connected to a support frame 15, and the rotation of the rotating cylinder 14 drives the support frame 15 to rotate synchronously. The support frame 15 is connected to a propulsion beam assembly 16, and the rotation of the support frame 15 drives the propulsion beam assembly 16 to rotate synchronously, thereby realizing the rotation action of the propulsion beam assembly 16±180 degrees. A pitch cylinder three 17 is connected between the upper arm 9 and the propulsion beam assembly 16, and the pitch cylinder three 17 and the pitch cylinder two 11 are interlocked to realize the swing and self-parallelization functions of the propulsion beam assembly 16. The support frame 15 is connected to a supporting cylinder 18, and the other end of the supporting cylinder 18 is connected to the propulsion beam assembly 16. The propulsion beam assembly 16 realizes swing and pitch under the action of the supporting cylinder 18.

[0030] During the specific implementation of this embodiment, when the boom 9 needs to swing, the pitch cylinder 11 is extended and retracted to drive the boom 9 to swing, and the swing of the boom 9 drives the synchronous swing of subsequent connected structures. However, when the propulsion beam assembly 16 needs to be rotated around the boom 9, the rotating cylinder 14 is rotated, and the rotation of the rotating cylinder 14 drives the support frame 15 to rotate, thereby driving the propulsion beam assembly 16 to rotate. At the same time, the extension and retraction of the small arm 13 is achieved through the extension and retraction of the telescopic cylinder 12, thereby realizing the telescopic adjustment of the propulsion beam assembly 16. The extension and retraction of the supporting cylinder 18 drives the propulsion beam assembly 16 to swing in pitch around the support frame 15, and the position of the propulsion beam assembly 16 is adjusted, thereby realizing the adjustment of the rock drilling position.

[0031] In order to adjust the distance between the left drill arm 3 and the right drill arm 4 and adapt to different rock drilling requirements, a structure for adjusting the distance between the left drill arm 3 and the right drill arm 4 is provided. Specifically, a rotating sleeve 19 is connected between the slewing arm 5 and the boom seat 1, the rotating sleeve 19 is rotatably connected to the boom seat 1, the rotating sleeve 19 is fixedly connected to the slewing arm 5, the rotation of the rotating sleeve 19 drives the slewing arm 5 to rotate, the rotating sleeve 19 is coaxially fixedly connected with an adjusting gear ring 20, the adjusting gear ring 20 is meshed with an adjusting gear 21 rotatably connected to the boom seat 1, the adjusting gear 21 rotates to drive the adjusting gear ring 20 to rotate, the adjusting gear ring 20 rotates to drive the rotating sleeve 19 to rotate, the adjusting gear 21 is connected to a reduction motor 22 disposed on the boom seat 1, and the driving of the adjusting gear 21 is achieved by the reduction motor 22.

[0032] During the rock drilling process, due to the huge impact force, the rotating sleeve 19 may be twisted, resulting in an unstable rock drilling position. Therefore, this embodiment provides a structure for limiting and clamping the rotating sleeve 19. Specifically, a limited clamping mechanism is arranged inside the rotating sleeve 19. The limited clamping mechanism includes a clamping frame 23 fixedly connected to the arm support seat 1, and a limiting sleeve 24 coaxially arranged with the rotating sleeve 19 is fixedly connected to the clamping frame 23. The limiting sleeve 24 is placed at one end of the rotating sleeve 19 and is fixedly connected to a plurality of hydraulic sleeves 25 with equal circumferential distribution. The hydraulic A hydraulic rod 26 is slidably connected inside the pressing sleeve 25. The limit sleeve 24 and the hydraulic sleeve 25 are filled with hydraulic oil. The hydraulic rod 26 slides in the hydraulic sleeve 25. The end of the hydraulic rod 26 away from the hydraulic sleeve 25 is connected to a clamping block 27. The hydraulic rod 26 and the hydraulic sleeve 25 are connected by a spring. When the hydraulic rod 26 slides, the clamping block 27 is driven to slide synchronously. In the process of synchronous sliding of the clamping block 27, the limit clamping of the rotating sleeve 19 is realized to prevent the rotating sleeve 19 from rotating under the action of strong impact force.

[0033] A telescopic piston 28 is coaxially slidably connected inside the hydraulic sleeve 25 . The hydraulic sleeve 25 is connected to an external pressure supply structure. The hydraulic rod 26 can be telescoped by supplying pressure to the hydraulic sleeve 25 .

[0034] In order to achieve the rapid contraction of the hydraulic rod 26 during the pressure release process, the hydraulic sleeve 25 is coaxially fixedly connected with a buffer bin 29 at one end close to the rotating sleeve 19, and an electromagnetic fluid valve is fixedly connected between the buffer bin 29 and the hydraulic sleeve 25. The electromagnetic fluid valve is externally connected to a power supply, and the opening and closing of the electromagnetic fluid valve is used to realize the opening and closing of the buffer bin 29 and the hydraulic sleeve 25. In the process of releasing the pressure on the hydraulic rod 26, the electromagnetic fluid valve is opened, and the hydraulic oil flows back into the buffer bin 29, so that the hydraulic rod 26 contracts after completion. In the process of contraction and pressure release of the telescopic piston 28, the electromagnetic fluid valve is opened again, and the electromagnetic fluid valve is opened to discharge the hydraulic oil inside the buffer bin 29. After the end, the electromagnetic fluid valve is closed, so that the inside of the buffer bin 29 is in a no-load state.

[0035] The buffer bin 29 is coaxially slidably connected with a buffer plate 30, and the buffer plate 30 and the buffer bin 29 are connected by a spring. When the buffer bin 29 is in an unloaded state, the buffer plate 30 stretches the spring and is located at one end of the electromagnetic fluid valve. At the same time, when the hydraulic rod 26 is in the process of releasing pressure, the electromagnetic fluid valve opens, and the spring contracts, so that the hydraulic oil in the process of releasing pressure of the hydraulic rod 26 quickly enters the buffer bin 29, causing the hydraulic rod 26 to contract quickly.

[0036] The thrust beam assembly 16 includes a base beam 31 connected to the support cylinder 18, and a rotating screw 32 is rotatably connected to the base beam 31. The rotating screw 32 is threadedly connected to a sliding base 33 slidably connected to the base beam 31. The rotating screw 32 rotates to drive the sliding seat to slide on the base beam 31. The sliding base 33 is connected to a sliding frame 34. The sliding frame 34 is fixedly connected to a fixed bracket at one end away from the rotating arm 2, and a rock drill is connected to the fixed bracket, so that the sliding base 33 slides and the sliding frame 34, the fixed bracket and the rock drill are synchronously slidable, thereby ensuring effective drilling of the wellbore.

[0037] In the process of rock drilling, in order to ensure the efficiency of rock drilling, the drill bit can be cooled and the rock and soil can be sprayed with water during the process of rock drilling, so the rotating screw 32 is hollow, and the rotating screw 32 is rotatably connected to a liquid protection pipe 36 at the axis, and the rotating screw 32 rotates around the liquid protection pipe 36, and the liquid protection pipe 36 is penetrated and connected with a liquid hose 37, and the liquid hose 37 is a corrugated telescopic pipe, and one end of the liquid hose 37 is placed in a liquid storage tank connected to the lower end of the base beam 31. The liquid storage tank is connected to a micro water pump, and a liquid supply hose 39 is connected to the liquid storage tank. The liquid supply hose 39 is connected to the micro water pump, and the liquid supply hose 39 and the liquid hose 37 are supplied with liquid through the micro water pump, so as to supply liquid to the rock drill. The other end of the liquid supply hose 39 is placed in the liquid storage tank connected to the lower end of the base beam 31, and the liquid storage tank is connected to a micro water pump, and the water outlet end of the micro water pump is connected to the liquid supply hose 39.

[0038] In order to detect the rock drilling depth, a depth sensor is fixedly connected to the propulsion beam assembly 16, and the depth sensor is connected to a display screen connected to the boom seat 1, so that the drilling depth is fed back on the display screen in real time.

[0039] The drilling trolley also includes a frame 40, track walking wheels 41, multiple pulley blocks for traction frame 40 movement and legs 42 above the frame 40. The frame 40 is limited and fixed by the legs 42 to prevent the frame 40 from sliding. At the same time, the frame 40 is driven to slide in the shaft through the sliding of the pulley block. The pulley block and the external winch lifting system are connected by wire ropes. The slide 44 system is arranged inside the frame 40. The slide 44 system includes multiple slides 43, slides 44, and lifting cylinders. The slide 44 moves under the action of the lifting cylinder. The telescopic boom assembly is connected to the frame 40 through the boom seat 1.

[0040] When the present invention is used, first the slide 44 slides to slide the frame 40 to a suitable position, and then the legs 42 are spread apart. When the drilling position needs to be adjusted, when the boom 9 needs to swing, the pitch cylinder 11 is extended and retracted to drive the boom 9 to swing, and the boom 9 swings, which drives the subsequent connected structures to swing synchronously. However, when the propulsion beam assembly 16 needs to be rotated around the boom 9, the rotary cylinder 14 rotates, and the rotation of the rotary cylinder 14 drives the support frame 15 to rotate, and then drives the propulsion beam assembly 16 to rotate. At the same time, The extension and retraction of the telescopic cylinder 12 realizes the extension and retraction of the small arm 13, and then realizes the telescopic adjustment of the propulsion beam assembly 16. The extension and retraction of the supporting cylinder 18 drives the pitching and swinging of the propulsion beam assembly 16 around the support frame 15, and adjusts the position of the propulsion beam assembly 16, thereby realizing the adjustment of the rock drilling position. After the adjustment is completed, the hydraulic sleeve 25 is pressurized, thereby driving the hydraulic rod 26 to slide, and then through the sliding of the clamping block 27, the rotating sleeve 19 is clamped, thereby realizing the effective limit of the slewing arm 5.

[0041] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A telescopic boom assembly, characterized in that: It comprises a boom seat (1), the boom seat (1) is connected to a swivel boom (2), the swivel boom (2) is connected to a left drill arm (3) and a right drill arm (4), and the left drill arm (3) and the right drill arm (4) have the same structure; The slewing arm (2) comprises a slewing boom (5) fixed on the arm support seat (1), the slewing boom (5) is connected to two adjusting oil cylinders (6) distributed up and down, the two adjusting oil cylinders (6) are respectively connected to a left slewing telescopic arm (7) and a right slewing telescopic arm (8), the left slewing telescopic arm (7) and the right slewing telescopic arm (8) are both slidably connected to the slewing boom (5); The left drilling arm (3) comprises a boom (9) rotatably connected to the left rotary telescopic arm (7); a pitch cylinder 1 (10) and a pitch cylinder 2 (11) are connected between the boom (9) and the left rotary telescopic arm (7); the pitch cylinder 1 (10), the pitch cylinder 2 (11) and the left rotary telescopic arm (7) are fixedly connected; the other ends of the pitch cylinder 1 (10) and the pitch cylinder 2 (11) are rotatably connected to the boom (9); the boom (9) is connected to a telescopic cylinder (12); the other end of the telescopic cylinder (12) is connected to a forearm (13), the forearm (13) is connected to a rotating cylinder (14), the other end of the rotating cylinder (14) is connected to a support frame (15), the support frame (15) is connected to a propulsion beam assembly (16), the rotating cylinder (14) is used to realize a ±180 degree rotation of the propulsion beam assembly (16), a pitch cylinder three (17) is connected between the upper arm (9) and the propulsion beam assembly (16), the support frame (15) is connected to a supporting cylinder (18), the other end of the supporting cylinder (18) is connected to the propulsion beam assembly (16).

2. A telescopic boom assembly according to claim 1, characterized in that: A rotating sleeve (19) is connected between the slewing arm (5) and the arm support seat (1); the rotating sleeve (19) is rotatably connected to the arm support seat (1); the rotating sleeve (19) is fixedly connected to the slewing arm (5); the rotation of the rotating sleeve (19) drives the slewing arm (5) to rotate synchronously; the rotating sleeve (19) is coaxially fixedly connected to an adjusting toothed ring (20); an adjusting gear (21) rotatably connected to the arm support seat (1) is meshed next to the adjusting toothed ring (20); the adjusting gear (21) is connected to a reduction motor (22) disposed on the arm support seat (1).

3. A telescopic boom assembly according to claim 2, characterized in that: A limit clamping mechanism is arranged inside the rotating sleeve (19), and the limit clamping mechanism comprises a clamping frame (23) fixedly connected to the arm support seat (1), a limit sleeve (24) coaxially arranged with the rotating sleeve (19) is fixedly connected to the clamping frame (23), one end of the limit sleeve (24) is arranged on the rotating sleeve (19) and is fixedly connected to a plurality of hydraulic sleeves (25) with equal circumference distribution, a hydraulic rod (26) is slidably connected inside the hydraulic sleeve (25), one end of the hydraulic rod (26) away from the hydraulic sleeve (25) is connected to a clamping block (27), and the hydraulic rod (26) and the hydraulic sleeve (25) are connected via a spring; A telescopic piston (28) is coaxially slidably connected inside the hydraulic sleeve (25), and the hydraulic sleeve (25) is connected to an external pressure supply structure. By supplying pressure to the hydraulic sleeve (25), the telescopic movement of the hydraulic rod (26) is achieved.

4. A telescopic boom assembly according to claim 3, characterized in that: The hydraulic sleeve (25) is coaxially fixedly connected to one end of the rotating sleeve (19) with a buffer bin (29), an electromagnetic fluid valve is fixedly connected between the buffer bin (29) and the hydraulic sleeve (25), and the electromagnetic fluid valve is connected to an external power supply; A buffer plate (30) is coaxially slidably connected inside the buffer bin (29), and the buffer plate (30) and the buffer bin (29) are connected via a spring.

5. A telescopic boom assembly according to claim 4, characterized in that: The propulsion beam assembly comprises a base beam (31) connected to a support cylinder (18); a rotating screw rod (32) is rotatably connected to the base beam (31); the rotating screw rod (32) is threadedly connected to a sliding base (33) slidably connected to the base beam (31); a sliding frame (34) is connected to the sliding base (33); a fixed bracket is fixedly connected to one end of the sliding frame (34) away from the slewing arm (2); and a rock drill is connected to the fixed bracket.

6. A telescopic boom assembly according to claim 5, characterized in that: The rotating screw (32) is hollow, and a liquid protection tube (36) is rotatably connected to the axis of the rotating screw (32). A liquid hose (37) is connected to the inside of the liquid protection tube (36). The liquid hose (37) is a corrugated telescopic tube. One end of the liquid hose (37) is placed inside a liquid storage tank connected to the lower end of the base beam (31). A micro water pump is connected to the inside of the liquid storage tank. A liquid supply hose (39) is connected to the liquid storage tank. The liquid supply hose (39) is connected to the micro water pump. The other end of the liquid supply hose (39) is placed inside the liquid storage tank connected to the lower end of the base beam (31). The water outlet end of the micro water pump is connected to the liquid supply hose (39).

7. A telescopic boom assembly according to claim 6, characterized in that: A depth sensor is fixedly connected to the propulsion beam assembly, and the depth sensor is connected to a display screen connected to the arm support seat (1), so that the drilling depth is fed back on the display screen in real time.

8. A rock drilling rig, characterized in that: A telescopic boom assembly according to claim 6, further comprising a frame (40), track running wheels (41), a plurality of pulley blocks for traction of the frame (40) and legs (42) above the frame (40), wherein the pulley blocks are connected to an external winch lifting system via a steel wire rope; A slide system is arranged inside the frame (40), the slide system comprising a plurality of slideways (43), a slide (44), and a lifting cylinder, the slide (44) moves under the action of the lifting cylinder, and the telescopic boom assembly is connected to the slide system via a boom seat (1).

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