A multi-arm roof bolter

Abstract

The application discloses a multi-arm anchor rod drill carriage, and relates to the technical field of anchor rod supporting equipment for coal mining, comprising a caterpillar walking chassis, an anchor protection unit and an automatic net feeding device; the anchor protection unit comprises a lifting platform and a rotary anchor protection platform, the lifting platform is fixedly arranged on the caterpillar walking chassis, the rotary anchor protection platform comprises a base, a rotary platform, a front moving cross beam and a rear moving cross beam, and the rotary platform is fixedly connected with the output end of a first rotary speed reducer; three top anchor drills are arranged on the front moving cross beam and the rear moving cross beam respectively; the automatic net feeding device comprises a rack, a net piece warehouse, a net piece suction disc and two lifting and overturning mechanisms arranged in parallel and at intervals, and the rack is fixedly connected with the caterpillar walking chassis; permanent magnets are arranged on the net piece suction disc; each lifting and overturning mechanism comprises a sliding rail, a sliding seat, a lower sleeve, an upper sleeve, a first connecting rod, a second connecting rod and a hinged seat. The application can effectively improve the operation efficiency of anchor rod supporting in coal mines.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining anchor protection equipment, in particular to a multi-arm anchor rod drill carriage. BACKGROUND

[0002] At present, the coal mine mainly adopts the anchor rod supporting process, drills anchor rod holes or anchor cable holes on the inner wall of the coal mining roadway, and thus installs anchor rod or anchor cable supporting devices, therefore, the hydraulic anchor rod drill carriage for coal mine is an important coal mine anchor protection device. For part of the tunneling roadway, the head-on support is adopted from the tunneling equipment, generally a two-arm anchor rod machine is adopted, the volume is relatively narrow, due to the limitation of the anchor protection device, only two rods can be supported at a time, and the large arm needs to be frequently swung, which has certain safety hidden dangers, and is time-consuming and laborious. The multi-arm anchor rod drill carriage needs the front tunneling equipment to retreat, and then enters the head-on to anchor, which is time-consuming and laborious.

[0003] In the existing anchor rod drill carriage, most of them adopt the method of fixing the platform on the tracked walking chassis, the platform can realize simple vertical lifting function, and is provided with sliding rails for carrying the anchor rod drill, according to different conditions of the used roadway, the drill can be arranged as two arms to multiple arms, however, according to the complex conditions of the roadway, in fact, there are still problems such as the need for the anchor rod drill carriage to frequently reverse and the inability to consider both the side and the fixed side.

[0004] In addition, the current underground supporting equipment still has the following defects:

[0005] (1) At present, the existing multi-arm anchor rod machine has a relatively wide width, and the normal roadway width cannot simultaneously satisfy the error machine entering the head-on operation with the fully mechanized mining machine, which leads to the fact that the fully mechanized working face cannot realize the mechanization and automation of anchor rod support, and can only rely on the single anchor rod drill to complete the support with manual work, which is time-consuming and laborious and has poor safety;

[0006] (2) After the width of the anchor rod machine is narrowed, the normal roadway width cannot simultaneously satisfy the error machine entering the head-on operation with the fully mechanized mining machine, but due to the limitation of the narrow machine body, only single-arm or double-arm arrangement can be arranged, and multiple drill arms and multiple parallel operations cannot be satisfied, the number of anchor rods supported at one time is small, which is time-consuming and laborious;

[0007] (3) The drill arm of the existing multi-arm anchor rod machine is usually arranged in single row, and can only support the roof and the side of the roadway in single row, and cannot support multiple rows of anchor rods, if 3-4 rows of anchor rods need to be supported after the head-on cutting, multiple operations need to be performed to complete the support of the roadway, which is low in efficiency;

[0008] (4) When the anchor rod machine performs the net laying operation, manual anchor net feeding is usually adopted, which needs more manpower and is time-consuming and laborious. SUMMARY

[0009] The present application aims to provide a multi-arm anchor rod drilling rig to solve the problems of the prior art and improve the operation efficiency of anchor rod support in coal mines.

[0010] To achieve the above-mentioned purpose, the present application provides the following solutions.

[0011] The present application provides a multi-arm anchor rod drilling rig, which comprises:

[0012] A crawler-type walking chassis;

[0013] An anchor protection unit, which comprises a lifting platform and a rotating anchor protection platform, the lifting platform is fixedly arranged on the crawler-type walking chassis, and a first slewing reducer is arranged on the lifting platform; the rotating anchor protection platform comprises a base, a rotating platform, a front moving cross beam and a rear moving cross beam, the bottom end center of the base is fixedly connected with the output end of the first slewing reducer, the rotating platform is fixedly connected with the base, the front moving cross beam and the rear moving cross beam are located on the two sides of the rotating platform, and the front moving cross beam and the rear moving cross beam are connected with the rotating platform through telescopic mechanisms respectively; the telescopic mechanism comprises a first sleeve, a second sleeve and a first driving device, the first sleeve is fixedly arranged on the front moving cross beam or the rear moving cross beam, the second sleeve and the first driving device are fixedly arranged on the rotating platform, the first sleeve is partially arranged in the second sleeve, and the first driving device is used for driving the first sleeve to slide along the second sleeve; a plurality of roof bolting drilling machines are arranged on the front moving cross beam and the rear moving cross beam respectively and at intervals;

[0014] An automatic net feeding device, which comprises a rack, a net piece warehouse, a net piece suction disc and two lifting and overturning mechanisms arranged in parallel and at intervals, the rack is fixedly connected with the crawler-type walking chassis; the net piece warehouse comprises a fixed net piece warehouse, the fixed net piece warehouse comprises a horizontal plate and a vertical baffle, one end of the horizontal plate is fixedly connected with the rack, and the bottom end of the vertical baffle is fixedly connected with the other end of the horizontal plate; a permanent magnet is arranged on the net piece suction disc; each lifting and overturning mechanism comprises a sliding rail, a sliding seat, a lower sleeve, an upper sleeve, a first connecting rod, a second connecting rod and a hinged seat; the sliding rail is fixedly arranged on the rack and is perpendicular to the vertical baffle; the sliding seat is in sliding fit with the sliding rail, a second driving device is used for driving the sliding seat to slide along the sliding rail, the bottom end of the lower sleeve is fixedly connected with the sliding seat, the upper sleeve is slidably arranged on the lower sleeve, a third driving device is arranged in the lower sleeve and used for driving the upper sleeve to slide relative to the lower sleeve, the hinged seat is fixedly connected with the net piece suction disc, one end of the first connecting rod is hinged with one end of the hinged seat, a sixth driving device is fixedly arranged on the top end of the upper sleeve and used for driving the first connecting rod to rotate, one end of the second connecting rod is hinged with the top of the upper sleeve, and the other end of the second connecting rod is hinged with the other end of the hinged seat.

[0015] Preferably, the two ends of the rotating platform are respectively hinged with a side anchor protection step.

[0016] Preferably, the anchor protection unit further comprises a ceiling assembly, the ceiling assembly comprising two ceiling mechanisms; each of the ceiling mechanisms comprises an inner sleeve, an outer sleeve and a ceiling, the inner sleeve and the outer sleeve are vertically arranged, the ceiling is horizontally arranged, the bottom end of the inner sleeve is fixedly connected with the rotating platform, the outer sleeve is slidingly sleeved on the inner sleeve, the inner sleeve is provided with fourth driving devices for driving the outer sleeve to slide relative to the inner sleeve, and one end of the ceiling is fixedly connected with the top end of the outer sleeve.

[0017] Preferably, the roof anchor drilling machine is installed on the front moving cross beam or the rear moving cross beam through a first mounting structure; the first mounting structure comprises a vertical mounting plate, a second rotary reducer, a front-rear swing oil cylinder and a first mounting bracket, the bottom end of the vertical mounting plate is fixedly connected with the front moving cross beam or the rear moving cross beam, the second rotary reducer is fixedly arranged on the vertical mounting plate, the first mounting bracket is fixedly connected with the output end of the second rotary reducer, the roof anchor drilling machine is rotationally connected with the first mounting bracket in the corresponding first mounting structure, and one end of the front-rear swing oil cylinder is hingedly connected with the corresponding roof anchor drilling machine and the other end is hingedly connected with the first mounting bracket.

[0018] Preferably, the mesh bin further comprises a left side mesh moving bin and a right side mesh moving bin which are respectively slidingly matched with the fixed mesh bin, the left side mesh moving bin and the right side mesh moving bin both comprise a side moving bottom plate and a side moving baffle which is fixedly connected with one end of the side moving bottom plate, the side moving bottom plate is slidingly matched with the horizontal plate, and the side moving baffle is close to the vertical baffle; two parallel sliding grooves are arranged on the side moving bottom plate, the length direction of the sliding groove is perpendicular to the length direction of the sliding rail; a pin shaft is arranged on the horizontal plate corresponding to any one sliding groove, the pin shaft penetrates through the corresponding sliding groove, the top end of the pin shaft is fixedly provided with a gland, and the diameter of the gland is greater than the width of the sliding groove; the sliding groove is slidingly matched with the corresponding pin shaft; the left side mesh moving bin and the right side mesh moving bin both comprise a plurality of limiting rods which are distributed at intervals along the length direction of the sliding rail, the bottom end of the limiting rod is fixedly connected with the side moving bottom plate, and the interval between the limiting rod closest to the side moving baffle and the side moving baffle and the interval between any two adjacent limiting rods are greater than or equal to the thickness of the mesh to be used.

[0019] Preferably, the mesh suction cups comprise a fixed mesh suction cup and two side moving mesh suction cups, the hinged seat is fixedly connected with the fixed mesh suction cup, the two side moving mesh suction cups are respectively in sliding fit with the fixed mesh suction cup, a fifth driving device is arranged on the fixed mesh suction cup corresponding to each side moving mesh suction cup, and the fifth driving device is used for driving the corresponding side moving mesh suction cup to slide relative to the fixed mesh suction cup; the two side moving mesh suction cups can be respectively located on the two sides of the fixed mesh suction cup; the permanent magnets are arranged on the two side moving mesh suction cups respectively; and the upper slide rail and the lower slide rail are arranged on the fixed mesh suction cup corresponding to each side moving mesh suction cup, and the side moving mesh suction cup is in sliding fit with the corresponding upper slide rail and lower slide rail.

[0020] Preferably, a rack is arranged on the slide rail, the length direction of the rack is the same as the length direction of the slide rail, the second driving device is a driving motor fixedly arranged on the slide seat, and a driving gear meshing with the rack is fixedly arranged on the output shaft of the second driving device.

[0021] Preferably, a first electromagnetic proximity switch is arranged at one end of the slide rail away from the vertical baffle, a second electromagnetic proximity switch is arranged in the middle of the slide rail, the first electromagnetic proximity switch and the second electromagnetic proximity switch are respectively electrically connected with a control system, and the control system is used for controlling the opening and closing of the second driving device, the third driving device and the fifth driving device.

[0022] Preferably, the first driving device, the third driving device, the fourth driving device and the fifth driving device all adopt hydraulic cylinders; and the lifting platform adopts a scissor type lifting platform.

[0023] Preferably, the sixth driving device adopts a rotary oil cylinder, and the other end of the first connecting rod is fixedly connected with the output shaft of the rotary oil cylinder.

[0024] The present application has the following technical effects relative to the prior art:

[0025] The multi-arm anchor rod drilling rig of the present application can effectively improve the operation efficiency of anchor rod support in coal mines.

[0026] Specifically, the multi-arm anchor rod drilling rig of the present application can support multiple anchor rods at a time, and can narrow the body as needed; in the retracted state, it can walk in the roadway and other equipment, and in the unfolded working state, it can support anchor rods on multiple rows of anchor rod tops and side slopes. The problem of low and lagging anchor support efficiency in the current tunneling roadway is solved, the anchor support efficiency is improved, and the intelligent and labor reduction trend is met.

[0027] The multi-arm anchor rod drilling rig of the present application can simultaneously perform the supporting operation by the front and rear anchor support drilling machines, and the row distance can be adjusted in the range of 600-1000mm, thereby solving the problem of the lag of the side anchor rod support when the roof anchor is drilled.

[0028] The automatic mesh feeding device of the multi-arm anchor rod drilling rig of the present application can automatically feed the anchor mesh to the front working platform after the mesh is manually placed, thereby saving the manpower and material resources, reducing the labor intensity, speeding up the mesh laying process, and having important significance for improving the anchor support efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The figure is a structural schematic diagram of the multi-arm anchor rod drilling rig of the present application;

[0031] Figure 2 The figure is a structural schematic diagram of the anchor support unit in the multi-arm anchor rod drilling rig of the present application;

[0032] Figure 3 The figure is a structural schematic diagram of the anchor support unit in the multi-arm anchor rod drilling rig of the present application;

[0033] Figure 4 The figure is a structural schematic diagram of the scissor type lifting platform in the multi-arm anchor rod drilling rig of the present application;

[0034] Figure 5 The figure is a structural schematic diagram of the automatic mesh feeding device in the multi-arm anchor rod drilling rig of the present application;

[0035] Figure 6 The figure is a structural schematic diagram of the automatic mesh feeding device in the multi-arm anchor rod drilling rig of the present application;

[0036] Figure 7 The figure is Figure 7 The figure is a local enlarged view of A in the figure;

[0037] Figure 8 The figure is a structural schematic diagram of the automatic mesh feeding device in the multi-arm anchor rod drilling rig of the present application;

[0038] Figure 9 The figure is a structural schematic diagram of the automatic mesh feeding device in the multi-arm anchor rod drilling rig of the present application;

[0039] Among them, 100 is the tracked chassis; 200 is the anchoring unit; 300 is the oil tank; 400 is the pump station; 500 is the automatic net feeding device; 1 is the scissor lift platform; 2 is the second rotary reducer; 3 is the first mounting frame; 4 is the front and rear swing cylinder; 5 is the outer sleeve; 6 is the lower sleeve; 7 is the rear moving crossbeam; 8 is the rotating platform; 9 is the side anchoring pedal; 10 is the top anchor drilling rig; 11 is the canopy; 12 is the base; 13 is the frame; 14 is the slide rail; 15 is the platform base slide rail; 16 is the platform lifting cylinder; 17 is the connecting rod assembly; 18 is the platform seat; 19 is the first rotary reducer; 20 is the canopy; 21 is the vertical mounting plate; 22 is the fifth drive unit. 23. Permanent magnet; 24. Second mounting bracket; 25. Slide block; 26. Upper sleeve; 27. Sixth drive device; 28. First connecting rod; 29. ​​Second connecting rod; 30. Hinge seat; 31. Fixed mesh compartment; 32. Right side moving mesh compartment; 33. Left side moving mesh compartment; 34. Second drive device; 35. Rack; 36. Fixed mesh suction cup; 37. Side moving mesh suction cup; 38. Pin shaft; 39. Front moving crossbeam; 301. Slide groove; 302. Limiting rod; 331. Side moving base plate; 332. Side moving baffle; 3601. First upper slide rail; 3602. Second upper slide rail; 3603. First lower slide rail; 3604. Second lower slide rail. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The purpose of this invention is to provide a multi-arm anchor bolt drilling rig to solve the problems existing in the prior art and improve the operational efficiency of anchor bolt support in coal mines.

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figures 1-9 As shown, this embodiment provides a multi-arm anchor bolt drilling rig, including a tracked chassis 100, an anchor protection unit 200, and an automatic net feeding device 500.

[0044] The anchoring unit 200 includes a lifting platform, a rotating anchoring platform, six top anchor drilling rigs 10, and two canopy assemblies. The lifting platform is fixed on a tracked chassis 100.

[0045] In the embodiment, the lifting platform is a scissor lifting platform 1. The structure of the scissor lifting platform 1 is shown in Figure 5 The platform base sliding rail 15 is installed on the running chassis, and a fixed rail is installed on the inner side. Under the action of the platform lifting oil cylinder 16, the connecting rod assembly 17 moves in the sliding rail, and drives the platform base 18 to vertically lift, with a lifting range of 0-1000mm. The platform base 18 of the scissor lifting platform 1 is provided with a first rotary reducer 19. The scissor lifting platform 1 is a mature existing device, and its specific structure and working principle will not be described in detail in the embodiment.

[0046] In the embodiment, the rotating anchor protection platform includes a base 12, a rotating platform 8, a front moving beam 39 and a rear moving beam 7. The bottom end center of the rotating platform 8 is fixedly connected with the output end of the first rotary reducer 19, and the rotating platform 8 is fixedly connected with the base 12. The front moving beam 39 and the rear moving beam 7 are located on the front and rear sides of the rotating platform, and the front moving beam 39 and the rear moving beam 7 are connected with the rotating platform 8 through the telescopic mechanism respectively. The telescopic mechanism includes a first sleeve, a second sleeve and a first driving device. The first sleeve is fixedly arranged on the front moving beam or the rear moving beam, and the second sleeve and the first driving device are fixedly arranged on the rotating platform 8. The first sleeve is partially arranged in the second sleeve, and the first driving device is used to drive the first sleeve to slide along the second sleeve.

[0047] The front moving beam 39 and the rear moving beam 7 are respectively and intermittently provided with three top anchor drills 10. Specifically, the top anchor drill 10 is connected with the front moving beam 39 or the rear moving beam 7 through the first mounting structure. The first mounting structure includes a vertical mounting plate 21, a second rotary reducer 2, a front and rear swing oil cylinder 4 and a first mounting frame 3. The bottom end of the vertical mounting plate 21 is fixedly connected with the front moving beam 39 or the rear moving beam 7, the second rotary reducer 2 is fixedly arranged on the vertical mounting plate 21, the first mounting frame 3 is fixedly connected with the output end of the second rotary reducer 2, the top anchor drill 10 is rotationally connected with the first mounting frame 3 in the corresponding first mounting structure, and one end of the front and rear swing oil cylinder 4 is hingedly connected with the corresponding top anchor drill 10, and the other end is hingedly connected with the first mounting frame 3. It is worth noting that the two top anchor drills 10 at the two ends of the front moving beam 39 and the rear moving beam 7 can be used as side drilling machines after being driven by the second rotary reducer 2 to be in a horizontal state.

[0048] The roof assembly comprises two roof mechanisms; each roof mechanism comprises an inner sleeve, an outer sleeve 5 and a roof 11, the inner sleeve and the outer sleeve 5 are vertically arranged, the roof 11 is horizontally arranged, the bottom end of the inner sleeve is fixedly connected with the rotating platform 8, the outer sleeve 5 is slidingly sleeved on the inner sleeve, the fourth driving device for driving the outer sleeve 5 to slide relative to the inner sleeve is arranged in the inner sleeve, and one end of the roof 11 is fixedly connected with the top end of the outer sleeve 5; it should be noted that the inner sleeve is not visible in Figures 1 to 3 .

[0049] The two ends of the rotating platform 8 are respectively hingedly connected with a side anchor protection step 9. The side anchor protection step 9 is used for being stepped on by the construction personnel, and when not in use, the side anchor protection step 9 is rotated vertically, so that the width and the length of the anchor protection unit 200 of the embodiment are reduced, thereby facilitating the movement of the anchor protection unit 200 of the embodiment in a narrow roadway.

[0050] In the embodiment, the first driving device and the fourth driving device both adopt hydraulic cylinders.

[0051] The rotating platform 8 is connected with the lifting platform through the first rotary reducer 19, the first rotary reducer 19 drives the rotating platform 8 to rotate 90° in the working state, and the side anchor protection step 9 is placed in the horizontal working state, at this time, the width of the anchor protection unit 200 of the embodiment can reach 4900 mm, the width of the rotating platform 8 is 1300 mm, the length is 3000 mm, and the rotating range of the rotating platform 8 is-90°~+90°.

[0052] In the embodiment, six drilling machines are arranged on the rotating anchor protection platform, and are arranged in front and back two rows, and each row has three top anchor drilling machines 10. The spacing between the top anchor drilling machines 10 in the front row and the top anchor drilling machines 10 in the back row can be adjusted, and the row spacing adjustment range is 300 mm~1300 mm.

[0053] It should be noted that the front and rear rotation of the top anchor drilling machine 10 is realized through the front and rear swing oil cylinders 4, and the inner and outer rotation of the top anchor drilling machine 10 is realized through the driving of the second rotary reducer 2.

[0054] The automatic net feeding device 500 specifically comprises a rack 13, a net piece warehouse, a net piece suction cup and two lifting and overturning mechanisms. The rack 13 is fixedly connected with the chassis in the crawler-type walking chassis 100, so that the rack 13 can move with the movement of the vehicle body of the anchor rod drilling vehicle. The net piece warehouse is used for storing net pieces, and the fixed net piece warehouse 31 comprises a horizontal plate and a vertical baffle, one end of the horizontal plate is fixedly connected with the rack 13, and the bottom end of the vertical baffle is fixedly connected with the other end of the horizontal plate.

[0055] In the embodiment, the screen bin further comprises a left side moving screen bin 33 and a right side moving screen bin 32 which are respectively in sliding fit with the fixed screen bin 31. The left side moving screen bin 33 and the right side moving screen bin 32 both comprise a side moving bottom plate 331 and a side moving baffle 332 which is fixedly connected to one end of the side moving bottom plate 331. The side moving bottom plate 331 is in sliding fit with the horizontal plate, and the side moving baffle 332 is close to the vertical baffle. The fixed screen bin 31, the left side moving screen bin 33 and the right side moving screen bin 32 are all in L shape. The left side moving screen bin 33 and the right side moving screen bin 32 are arranged to be retracted into the fixed screen bin 31, so as to reduce the size of the whole screen bin, which is beneficial to the automatic screen feeding device 500 to pass through the narrow roadway of the coal mine.

[0056] A sliding groove 301 is arranged on the side moving bottom plate 331, and the length direction of the sliding groove 301 is perpendicular to the length direction of the slide rail 14. A pin shaft 38 is arranged on the horizontal plate corresponding to any one of the sliding grooves 301. The pin shaft 38 penetrates through the corresponding sliding groove 301, and a gland is fixedly arranged on the top end of the pin shaft 38. The diameter of the gland is greater than the width of the sliding groove 301. The sliding groove 301 is in sliding fit with the corresponding pin shaft 38. The bottom end of the pin shaft 38 is fixedly connected to the side moving bottom plate 331 through a nut, but the side moving bottom plate 331 can be manually driven to slide on the horizontal plate after the nut is fastened. It should be noted that the gland has a limiting effect on the side moving bottom plate 331, which can prevent the side moving bottom plate 331 from tilting under the action of its own gravity and the gravity of the side moving baffle 332 after the side moving bottom plate 331 slides.

[0057] The left side moving screen bin 33 and the right side moving screen bin 32 both comprise a plurality of limiting rods 302 which are distributed along the length direction of the slide rail 14. The bottom end of the limiting rod 302 is fixedly connected to the side moving bottom plate 331. The interval between the limiting rod 302 closest to the side moving baffle 332 and the side moving baffle 332 and the interval between any two adjacent limiting rods 302 are both greater than or equal to the thickness of the screen to be used. In the embodiment, the limiting rods 302 are arranged because the screen is usually a screen formed by welding a plurality of horizontal and vertical steel bars, which has poor rigidity and cannot stand on the side. The limiting rods 302 are welded on the right side moving screen bin 32 and the left side moving screen bin 33. The interval between the two limiting rods 302 or the interval between the limiting rod 302 closest to the side moving baffle 332 and the side moving baffle 332 can meet the requirement that the screen can stand and slide up and down. In actual application, the number of the limiting rods 302 can be adaptively selected according to actual needs. In addition, the plurality of limiting rods 302 which are distributed along the length direction of the slide rail 14 form a row of limiting rods 302. In actual application, in order to improve the stability of the screen standing in the screen bin, two or more rows of limiting rods 302 can be arranged on the same side moving bottom plate 331.

[0058] The mesh suction cup is used for sucking the mesh in the mesh bin, and a permanent magnet 23 is arranged on the mesh suction cup;

[0059] In the embodiment, the mesh suction cup includes a fixed mesh suction cup 36 and two side moving mesh suction cups 37. The hinged seat 30 is fixedly connected with the fixed mesh suction cup 36. The two side moving mesh suction cups 37 are respectively in sliding fit with the fixed mesh suction cup 36. A fifth driving device 22 is arranged on the fixed mesh suction cup 36 corresponding to each side moving mesh suction cup 37, and the fifth driving device 22 is used for driving the corresponding side moving mesh suction cup 37 to slide relative to the fixed mesh suction cup 36. The two side moving mesh suction cups 37 can be respectively located on the two sides of the fixed mesh suction cup 36. The two side moving mesh suction cups 37 are respectively provided with permanent magnets 23. In the embodiment, the fifth driving device 22 is a hydraulic cylinder.

[0060] The fixed mesh suction cup 36 is provided with an upper sliding rail and a lower sliding rail corresponding to each side moving mesh suction cup 37. Specifically, the two upper sliding rails are a first upper sliding rail 3601 and a second upper sliding rail 3602, and the two lower sliding rails are a first lower sliding rail 3603 and a second lower sliding rail 3604. One side moving mesh suction cup 37 is in sliding fit with the first upper sliding rail 3601 and the first lower sliding rail 3603, and the other side moving mesh suction cup 37 is in sliding fit with the second upper sliding rail 3602 and the second lower sliding rail 3604. The fifth driving device 22 drives the side moving mesh suction cup 37 to slide outward, so as to adjust the position of the side moving mesh suction cup 37 for sucking the mesh. Since the mesh is often long, the position of the side moving mesh suction cup 37 for sucking the mesh is preferably as far as possible to the outside, so as to improve the stability of the mesh.

[0061] The two lifting and overturning mechanisms are parallel and spaced apart. Each lifting and overturning mechanism includes a sliding rail 14, a sliding seat 25, a lower sleeve 41, an upper sleeve 26, a first connecting rod 28, a second connecting rod 29, and a hinged seat 30. The sliding rail 14 is fixedly arranged on the rack 13 and is perpendicular to the vertical baffle. The sliding seat 25 is in sliding fit with the sliding rail 14. The second driving device 34 is used for driving the sliding seat 25 to slide along the sliding rail 14. The bottom end of the lower sleeve 41 is fixedly connected with the sliding seat 25. The upper sleeve 26 is slidably sleeved on the lower sleeve 41. The lower sleeve 41 is provided with a third driving device for driving the upper sleeve 26 to slide relative to the lower sleeve 41. The top end of the upper sleeve 26 is fixedly provided with a sixth driving device 27 for driving the first connecting rod 28 to rotate.

[0062] In the embodiment, the sixth driving device 27 is a rotary oil cylinder. The other end of the first connecting rod 28 is fixedly connected with the output shaft of the rotary oil cylinder. When the rotary oil cylinder works, the first connecting rod 28 can rotate around the output shaft of the rotary oil cylinder as the center axis.

[0063] It should be noted that in actual application, the sixth driving device 27 (the sixth driving device 27 adopts a rotary oil cylinder) can also be used to drive the second connecting rod 29 to rotate, at this time, the end of the second connecting rod 29 away from the hinged seat 30 is fixedly connected with the output shaft of the rotary oil cylinder, and one end of the first connecting rod 28 is hinged with one end of the hinged seat 30, and the other end of the first connecting rod 28 is hinged with the top end of the upper sleeve 26; in addition, in actual application, other forms of driving devices and transmission mechanisms can also be used to drive the first connecting rod 28 or the second connecting rod 29 to rotate, as long as the final overturning of the mesh suction cup can be realized.

[0064] In the embodiment, the third driving device adopts a hydraulic cylinder. The slide rail 14 is provided with a rack 35, the length direction of the rack 35 is the same as the length direction of the slide rail 14, the second driving device 34 is a driving motor fixedly arranged on the slide base 25, and a driving gear meshing with the rack 35 is fixedly arranged on the output shaft of the second driving device 34.

[0065] One or both ends of the slide rail 14 away from the vertical baffle 24 are provided with first electromagnetic proximity switches, and the middle parts of the slide rail 14 are provided with second electromagnetic proximity switches, the first electromagnetic proximity switches and the second electromagnetic proximity switches are electrically connected with the control system respectively, and the control system is used to control the opening and closing of the second driving device 34, the second driving device and the fifth driving device 22.

[0066] The working process of the automatic mesh feeding device 500 in the embodiment is as follows:

[0067] The multi-arm anchor rod jumbo of the embodiment is driven to the middle position of the roadway, the right side mesh moving bin 32 and the left side mesh moving bin 33 are manually drawn out (i.e. the right side mesh moving bin 32 and the left side mesh moving bin 33 are respectively moved to the two sides of the fixed mesh bin 31), and the mesh is vertically placed between the two limiting rods 302 or between the limiting rod 302 closest to the side moving baffle 332 and the side moving baffle 332.

[0068] The fifth driving device 22 is used to drive the side moving mesh suction cup 37 to extend out, the second driving device 34 is used to drive the slide base 25 to slide along the slide rail 14 towards the mesh bin, the slide base 25 drives the lower sleeve 41, the upper sleeve 26, the first connecting rod 28, the second connecting rod 29, the hinged seat 30 and the mesh suction cup to slide when sliding, until the mesh suction cup slides to the mesh bin, after the mesh suction cup contacts the mesh, the second driving device 34 continues to drive the mesh suction cup to extrude the mesh, after the pressure of the driving motor, i.e. the second driving device 34, reaches a set value, the driving motor is stopped, so that the mesh suction cup no longer slides.

[0069] Then the second driving device in the lower sleeve 41 lifts the upper sleeve 26 to make the bottom end of the mesh higher than the top end of the mesh bin, and then rotates the oil cylinder to drive the first connecting rod 28 to rotate, so that the mesh is reversed from the vertical state to the horizontal state. The second driving device 34 drives the sliding seat 25 to slide along the slide rail 14 away from the mesh bin until the end of the slide rail 14 away from the mesh bin, and the sliding seat 25 triggers the first electromagnetic proximity switch. Then the mesh is dragged to the top of the drilling machine by the support worker on the rack 13, and the mesh feeding process is completed.

[0070] Then the second driving device in the lower sleeve 41 makes the upper sleeve 26 descend, and at the same time, the second driving device 34 drives the sliding seat 25 to slide along the slide rail 14 towards the mesh bin. After the sliding seat 25 triggers the second electromagnetic proximity switch, the control system automatically closes the driving motor to stop the sliding action. Then the rotating oil cylinder drives the first connecting rod to rotate, and the mesh suction cup is reversed from the horizontal state to the vertical state (as shown in the state). Figure 1 It should be noted that only when the first electromagnetic proximity switch is triggered first and the second electromagnetic proximity switch is triggered, the control system will automatically close the driving motor to stop the sliding action.

[0071] It should be noted that the multi-arm anchor rod drilling rig of the present embodiment is also provided with an oil tank 300 and a pump station 400. The oil tank 300 is used to store hydraulic oil, and the pump station 400 is used to supply oil to each hydraulic cylinder.

[0072] The specific method of using the multi-arm anchor rod drilling rig of the present embodiment for rapid support is as follows:

[0073] (1) After the cutting of the fully mechanized coal mining machine is completed, the fully mechanized coal mining machine is made to retreat and lean against the side coal wall, so that the multi-arm anchor rod drilling rig of the present embodiment is in the narrow state (as shown in Figure 1 ), and then the multi-arm anchor rod drilling rig of the present embodiment is made to enter the driving face from the side of the fully mechanized coal mining machine and drive to the middle position of the roadway for anchor protection, and the left mesh moving bin 33 and the right mesh moving bin 32 are manually pulled out, and the mesh needed for single cycle is placed in the mesh bin;

[0074] (2) Then the rotating anchor protection platform is rotated by 90°, and 2 anchor protection workers climb onto the rotating anchor protection platform to operate the front moving cross beam 39 to move forward and the rear moving cross beam 7 to move backward to expand the whole rack. Then the automatic mesh feeding device 500 is started to feed the mesh (for details, refer to the working process of the automatic mesh feeding device 500);

[0075] (3) after the net is sent, the anchor protection worker assists in lifting the net above the ceiling 11, then drives the outer sleeve 5 to rise by operating the fourth driving device, the outer sleeve 5 drives the ceiling 11 to rise, until the ceiling 11 lifts the net to contact the roadway roof, then the hole drilling operation is started by each roof anchor drill 10, after the hole drilling is completed, the anchoring agent is placed, the anchor rod is installed, the anchoring agent is stirred, after several seconds, the anchor rod is trapped, and the installation of the anchor rod is completed;

[0076] (4) the scissor type lifting platform 1 is lifted to the highest (during the process, attention should be paid to driving the outer sleeve 5 to descend by operating the fourth driving device, so as to avoid interference between the ceiling 11 and the net during the lifting process of the scissor type lifting platform 1), the front and rear rows of roof side anchor rod supports are formed by the two roof anchor drills 10 at the two ends of the front moving beam 39 and the rear moving beam 7, 4 anchor rods are operated in parallel, after the completion, the scissor type lifting platform 1 is lowered, and the lower side anchor rod support is formed;

[0077] (5) the initial posture of all the roof anchor drills 10 is restored, the left net moving bin 33 and the right net moving bin 32 are withdrawn, the front moving beam 39 and the rear moving beam 7 are retracted, the rotating anchor protection platform is rotated by 90° in the reverse direction of the rotating direction in step (2), the multi-arm anchor rod jumbo of the embodiment is operated to walk, so that the multi-arm anchor rod jumbo of the embodiment retreats from the side of the fully-mechanized coal mining face to the rear side of the machine body, then the fully-mechanized coal mining face is started to walk forward to the middle position of the roadway to cut, and the next working cycle is entered;

[0078] (6) steps (1)-(5) are repeated until the whole coal mine tunneling and mining is completed.

[0079] In the description of the present application, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0080] In the present application, specific examples are applied to describe the principles and implementation modes of the present application, and the above examples are only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. Therefore, the content of the present application should not be understood as limiting the present application.

Claims

1. A multi-arm anchor bolt drilling rig, characterized in that, include: Tracked chassis; An anchoring unit includes a lifting platform and a rotating anchoring platform. The lifting platform is fixed to a tracked chassis and has a first rotary reducer. The rotating anchoring platform includes a base, a rotating platform, a front moving crossbeam, and a rear moving crossbeam. The bottom center of the base is fixedly connected to the output end of the first rotary reducer. The rotating platform is fixedly connected to the base. The front and rear moving crossbeams are located on opposite sides of the rotating platform and are connected to the rotating platform via telescopic mechanisms. The telescopic mechanism includes a first sleeve, a second sleeve, and a first driving device. The first sleeve is fixed to either the front or rear moving crossbeam. The second sleeve and the first driving device are fixed to the rotating platform. The first sleeve partially passes through the second sleeve, and the first driving device drives the first sleeve to slide along the second sleeve. Multiple top anchor drilling rigs are spaced apart on the front and rear moving crossbeams. An automatic net feeding device includes a frame, a net storage bin, net suction cups, and two parallel and spaced-apart lifting and tilting mechanisms. The frame is fixedly connected to a tracked chassis. The net storage bin includes a fixed net storage bin, which comprises a horizontal plate and a vertical baffle. One end of the horizontal plate is fixedly connected to the frame, and the bottom end of the vertical baffle is fixedly connected to the other end of the horizontal plate. A permanent magnet is provided on the net suction cups. Each lifting and tilting mechanism includes a slide rail, a slide base, a lower sleeve, an upper sleeve, a first connecting rod, a second connecting rod, and a hinged seat. The slide rail is fixed to the frame and connected to the vertical baffle. Vertical; the slide block is slidably engaged with the slide rail, the second driving device is used to drive the slide block to slide along the slide rail, the bottom end of the lower sleeve is fixedly connected to the slide block, the upper sleeve is slidably sleeved on the lower sleeve, the lower sleeve is provided with a third driving device for driving the upper sleeve to slide relative to the lower sleeve, the hinge seat is fixedly connected to the mesh suction cup, one end of the first connecting rod is hinged to one end of the hinge seat, the top end of the upper sleeve is fixedly provided with a sixth driving device for driving the first connecting rod to rotate, one end of the second connecting rod is hinged to the top of the upper sleeve, and the other end is hinged to the other end of the hinge seat.

2. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: Each end of the rotating platform is hinged with a side anchor plate.

3. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: The anchoring unit also includes a canopy assembly, which includes two canopy mechanisms. Each canopy mechanism includes an inner sleeve, an outer sleeve, and a canopy. The inner sleeve and the outer sleeve are both vertically arranged, and the canopy is horizontally arranged. The bottom end of the inner sleeve is fixedly connected to the rotating platform. The outer sleeve is slidably fitted onto the inner sleeve. A fourth driving device is provided in the inner sleeve to drive the outer sleeve to slide relative to the inner sleeve. One end of the canopy is fixedly connected to the top end of the outer sleeve.

4. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: The top anchor drilling rig is mounted on the front moving crossbeam or the rear moving crossbeam via a first mounting structure. The first mounting structure includes a vertical mounting plate, a second rotary reducer, a front and rear swing cylinder, and a first mounting frame. The bottom end of the vertical mounting plate is fixedly connected to the front moving crossbeam or the rear moving crossbeam. The second rotary reducer is fixedly mounted on the vertical mounting plate. The first mounting frame is fixedly connected to the output end of the second rotary reducer. The top anchor drilling rig is rotatably connected to the first mounting frame in the corresponding first mounting structure. One end of the front and rear swing cylinder is hinged to the corresponding top anchor drilling rig, and the other end is hinged to the first mounting frame.

5. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: The wire mesh compartment further includes a left-side shifting wire mesh compartment and a right-side shifting wire mesh compartment, which are slidably engaged with the fixed wire mesh compartment, respectively. Each of the left-side and right-side shifting wire mesh compartments includes a shifting base plate and a shifting baffle whose bottom end is fixedly connected to one end of the shifting base plate. The shifting base plate is slidably engaged with the horizontal plate, and the shifting baffle is close to the vertical baffle. Two parallel sliding grooves are provided on the shifting base plate, the length direction of which is perpendicular to the length direction of the slide rail. A pin is provided on the horizontal plate corresponding to any one of the sliding grooves. The shaft passes through the corresponding slide groove, and a pressure cap is fixed to the top of the pin shaft. The diameter of the pressure cap is greater than the width of the slide groove. The slide groove and the corresponding pin shaft are in sliding fit. The left and right shift mesh compartments each include a number of limiting rods spaced apart along the length of the slide rail. The bottom end of the limiting rod is fixed to the side shift base plate. The interval between the limiting rod closest to the side shift baffle and the side shift baffle, as well as the interval between any two adjacent limiting rods, is greater than or equal to the thickness of the mesh to be used.

6. The multi-arm anchor bolt drilling rig according to claim 3, characterized in that: The mesh suction cup includes a fixed mesh suction cup and two side-moving mesh suction cups. The hinge seat is fixedly connected to the fixed mesh suction cup, and the two side-moving mesh suction cups are slidably engaged with the fixed mesh suction cup. A fifth driving device is provided on the fixed mesh suction cup for each side-moving mesh suction cup, and the fifth driving device is used to drive the corresponding side-moving mesh suction cup to slide relative to the fixed mesh suction cup. The two side-moving mesh suction cups can be located on opposite sides of the fixed mesh suction cup. The two side-moving mesh suction cups are respectively provided with permanent magnets. The fixed mesh suction cup is provided with an upper slide rail and a lower slide rail for each side-moving mesh suction cup, and the side-moving mesh suction cups are slidably engaged with the corresponding upper slide rail and lower slide rail.

7. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: A rack is provided on the slide rail, and the length direction of the rack is the same as that of the slide rail. The second driving device is a drive motor fixed on the slide block, and a drive gear that meshes with the rack is fixed on the output shaft of the second driving device.

8. The multi-arm anchor bolt drilling rig according to claim 6, characterized in that: A first electromagnetic proximity switch is provided at one end of the slide rail away from the vertical baffle, and a second electromagnetic proximity switch is provided in the middle of the slide rail. The first electromagnetic proximity switch and the second electromagnetic proximity switch are electrically connected to the control system, which is used to control the opening and closing of the second drive device, the third drive device and the fifth drive device.

9. The multi-arm anchor bolt drilling rig according to claim 6, characterized in that: The first drive device, the third drive device, the fourth drive device, and the fifth drive device all use hydraulic cylinders; the lifting platform is a scissor lift platform.

10. The multi-arm anchor bolt drilling rig according to claim 1, characterized in that: The sixth driving device is a rotary hydraulic cylinder, and the other end of the first connecting rod is fixedly connected to the output shaft of the rotary hydraulic cylinder.

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