A light tunnel drill

Abstract

The present invention relates to the technical field of mining machinery and discloses a light-duty tunnel drilling rig, which includes: a vehicle body, a support arm, and a drilling arm that are connected in sequence. The drilling arm is detachably connected to the support arm through a docking unit, and the drilling arm is set as any one of a deep-hole drilling arm and a bolt drilling arm; a control unit, the control unit is connected to the support arm and the drilling arm, and the control unit includes a deep-hole drilling rig module and a bolt drilling rig module, which are respectively used to control the actions of the deep-hole drilling arm and the bolt drilling arm; a safety protection unit, the safety protection unit is arranged on the docking unit and is used to monitor the installation state of the drilling arm and the support arm and issue an alarm. The present invention adopts a modular body structure, and the drilling arm can be replaced according to the operation requirements, realizing the integrated design of the deep-hole drilling rig and the bolt drilling rig, solving the problems of high operation costs of simultaneously equipping two drilling rigs and the excessive volume and mass of the tunnel drilling rig; during the use process, the installation state of the drilling arm and the support arm is monitored to timely discover and handle potential safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery, and more specifically, the present invention relates to a light-duty tunnel drilling rig. Background Art

[0002] During the tunnel operation process, it is necessary to carry out drilling construction on the roadway excavation working face, and the drilling rig is a commonly used drilling equipment. The existing drilling rig equipment includes various types such as deep-hole drilling rigs and bolt drilling rigs. During operation, one or more of them are selected for combined operation according to the construction requirements. When changing the type, it is necessary to withdraw the original drilling rig equipment and then enter another drilling rig equipment. Limited by the tunnel space, and repositioning is required during drilling.

[0003] In the prior art, such as the invention patent with the application number CN202022643277.X, it discloses an excavation working mechanism that can be quickly connected to a detection drilling rig, including an excavation working mechanism and a detection drilling rig. The end of the excavation working mechanism is detachably connected with a detection drilling rig or a bucket through a quick connector. The drilling module can swing in the horizontal plane and the vertical plane respectively. The excavation working mechanism is hinged to the roadway tunneling equipment through a boom seat, so that the excavation working mechanism can rotate in the horizontal plane. When a bucket is connected to the excavation working mechanism, it is used for excavation, and when a detection drilling rig is connected, it is used for detecting and drilling engineering holes near the roadway. This device modularly and detachably connects the detection drilling rig to the end of the excavation working mechanism, which is convenient for disassembly and assembly, reduces the types of equipment and the number of operating personnel, and simplifies equipment management.

[0004] In this device, the detection drilling rig is connected to the end of the excavation working mechanism by means of a pin shaft and a rotating hook, which is prone to loosening during operation and has potential safety hazards.

[0005] Therefore, it is necessary to propose a light-duty tunnel drilling rig to at least partially solve the problems existing in the prior art. Summary of the Invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0007] To at least partially solve the above problems, the present invention provides a light-duty tunnel drilling rig, including:

[0008] A vehicle body, a support arm, and a drill arm connected in sequence. The drill arm is detachably connected to the support arm through a docking unit. The drill arm is set as either a deep-hole drill arm or a bolt drill arm;

[0009] A control unit, which is connected to the support arm and the drilling arm. The control unit includes a deep-hole drilling rig module and a rock bolt drilling rig module, which are respectively used to control the actions of the deep-hole drilling arm and the rock bolt drilling arm;

[0010] A safety protection unit, which is arranged on the docking unit and is used to monitor the installation state of the drilling arm and the support arm and issue an alarm.

[0011] Preferably, the docking unit includes:

[0012] A docking hole, which is arranged at the end of the drilling arm. An electromagnetic block is arranged at the bottom of the docking hole;

[0013] A docking block, which is arranged on the docking plate at the end of the support arm. When the drilling arm is installed, the docking block is installed in the docking hole. A magnetic block is arranged at the end of the docking block. After the electromagnetic block is energized, it attracts the magnetic block.

[0014] Preferably, a plurality of positioning grooves are arranged on the side wall of the docking hole, and positioning blocks are arranged on the side surface of the docking block. When the drilling arm is installed, the positioning blocks are respectively and correspondingly clamped with the positioning grooves.

[0015] Preferably, the docking block includes:

[0016] A positioning cavity, which is arranged on the side of the docking block close to the docking plate;

[0017] Guide columns, two guide columns are horizontally connected to the inner wall of the positioning cavity. A guide plate and a preloading plate are slidably connected to the guide columns. The preloading plate is located on the side of the guide columns away from the docking plate. A spring is connected between the guide plate and the preloading plate, and the spring is sleeved on the guide columns;

[0018] A screw rod, which is screwed to the center of the preloading plate and is arranged parallel to the guide columns.

[0019] Preferably, the docking block further includes:

[0020] A push rod, which is slidably connected to the side wall of the docking block. The inner end of the push rod is hinged to the guide plate through a connecting rod; at least two push rods are provided, and a plurality of push rods are evenly arranged along the circumferential direction of the docking block;

[0021] A positioning plate, which is connected to the outer end of the push rod and is arranged outside the docking block. A plurality of positioning blocks are evenly connected to the outside of the positioning plate, and the positioning blocks are perpendicularly arranged to the positioning plate.

[0022] Preferably, at least two sliding rods are connected to the inner side of the positioning plate. The sliding rods are slidably connected to the side wall of the docking block, and a stop piece is connected to the inner end of the sliding rods.

[0023] Preferably, the docking block further includes:

[0024] The drive rod is movably arranged on the guide plate. One end of the drive rod is connected to a rotating rod through a spline, and the rotating rod is connected to the screw rod; the other end of the drive rod passes through the docking plate and is connected to the knob; a ring body is connected to the drive rod.

[0025] Preferably, the safety protection unit includes:

[0026] A pressure sensor is arranged at the end of the positioning block and is used to detect the pressure situation when the positioning block is installed in the positioning groove;

[0027] An alarm is arranged on the vehicle body. The alarm and the pressure sensor are electrically connected to the controller, and the controller controls the operation of the alarm according to the pressure detection value.

[0028] Preferably, the safety protection unit further includes:

[0029] A protective plate is rotatably connected to the docking plate, and the drive rod passes through the protective plate;

[0030] An outer sleeve is connected to the center of the inner wall of the positioning cavity and is arranged close to the protective plate. A groove is arranged at the end of the outer sleeve, and a channel connected to the inner cavity of the outer sleeve is arranged at the end of the groove;

[0031] An inner sleeve is movably arranged in the outer sleeve. One end of the inner sleeve is provided with a lug, and the lug is clamped in the groove; the other end of the inner sleeve passes through the docking plate and is connected to the protective plate; the drive rod passes through the center of the inner sleeve, and the ring body is rotatably connected to the annular groove on the inner sleeve.

[0032] Preferably, the safety protection unit further includes:

[0033] Support seats, a plurality of support seats are evenly connected to one side of the inner wall of the positioning cavity close to the docking plate. An elastic telescopic member is installed in the support seat. The elastic telescopic member is electrically connected to the controller. The elastic telescopic member passes through the docking plate and is connected to the protective plate. An arc-shaped groove for the elastic telescopic member to move is arranged on the protective plate.

[0034] Preferably, a toothed ring is connected to the inner side of the protective plate, and a plurality of gears are meshed and connected to the inner side of the toothed ring. The gear shafts are connected to the protective plate.

[0035] Preferably, the elastic telescopic member includes:

[0036] A telescopic sleeve, the side wall of the telescopic sleeve is made of an elastic material, and the end caps at both ends are made of a rigid material. The end caps at both ends of the telescopic sleeve are respectively connected to the end of the support seat and the gear;

[0037] A telescopic rod, a plurality of telescopic rods are arranged inside the telescopic sleeve. The two ends of the telescopic rod are respectively connected to the end caps at both ends of the telescopic sleeve. The telescopic rod includes a plurality of telescopic joints connected in sequence;

[0038] The expansion joint includes a first connecting sleeve, a second connecting sleeve and an expansion piece. At both ends of the first connecting sleeve, a clamping groove and a first flange are respectively provided; at both ends of the second connecting sleeve, an expansion sliding rod and a bayonet are respectively provided, and a second flange is connected to the middle of the second connecting sleeve; the expansion piece is connected between the first flange and the second flange, and the expansion piece is arranged in a Z shape; the bayonet of the second connecting sleeve is connected to the clamping groove of the first connecting sleeve on the adjacent expansion joint.

[0039] Preferably, the elastic expansion member further includes:

[0040] A rotary expansion member, which is attached to the outer wall of the expansion sleeve. Both ends of the rotary expansion member are connected to the end caps of the expansion sleeve, and the rotary expansion member is inclined relative to the axis of the expansion sleeve; the rotary expansion member is arranged in a wavy shape;

[0041] A supporting expansion member, which is attached to the inner wall of the expansion sleeve. Both ends of the supporting expansion member are connected to the end caps of the expansion sleeve, and the supporting expansion member is inclined relative to the axis of the expansion sleeve, and the inclination direction is opposite to that of the rotary expansion member; the supporting expansion member is arranged in a wavy shape;

[0042] A heating wire is arranged on the inner wall of the support seat, and the heating wire is electrically connected to the controller;

[0043] The expansion piece and the rotary expansion member are made of shape memory alloy materials, and the expansion piece and the rotary expansion member tend to straighten after the temperature rises.

[0044] Compared with the prior art, the present invention has at least the following beneficial effects:

[0045] A light-duty tunnel drill provided by the present invention adopts a modular body structure, and the drill arm can be replaced according to the operation requirements, realizing the integrated design of a deep-hole drill and a bolt drill, solving the problem of high operation cost of simultaneously equipping two types of drills; at the same time, it solves the problem that the volume and mass of the tunnel drill are too large when two drill arms are simultaneously arranged on the vehicle body; the deep-hole drill arm and the bolt drill arm are respectively used as two independent modules, and each module has its own power system and control unit, improving the compatibility between the two drill arms and the drill; and it can monitor the installation state of the drill arm and the support arm during use, discover and handle potential safety hazards in time, and ensure the continuous and stable operation of the equipment.

[0046] For a light-duty tunnel drill described in the present invention, other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0048] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 is a schematic diagram of the structure of the docking unit in the present invention;

[0050] Figure 3 is a schematic cross-sectional structure diagram of the docking block in the present invention;

[0051] Figure 4 is the present invention Figure 3 is a schematic diagram of the locally enlarged structure at position A in the present invention;

[0052] Figure 5 is the present invention Figure 3 is a schematic diagram of the locally enlarged structure at position B in the present invention;

[0053] Figure 6 is a schematic diagram of the installation structure of the outer sleeve and the inner sleeve in the present invention;

[0054] Figure 7 is a schematic diagram of the inner side structure of the protective plate in the present invention;

[0055] Figure 8 is a schematic diagram of the structure of the elastic telescopic member in the present invention (both end caps are unfolded);

[0056] Figure 9 is a schematic diagram of the connection structure of the telescopic joint in the present invention;

[0057] Figure 10 is a schematic cross-sectional structure diagram of the telescopic joint in the present invention;

[0058] Figure 11 is a schematic diagram of the rotation direction of the elastic telescopic member in the present invention (the rotating telescopic member extends).

[0059] In the figure: 1. vehicle body; 2. support arm; 3. drilling arm; 11. docking hole; 12. positioning groove; 13. docking block; 14. docking plate; 21. positioning cavity; 22. guide post; 23. guide plate; 24. pre-pressing plate; 25. screw rod; 26. push rod; 27. connecting rod; 28. positioning plate; 29. positioning block; 31. sliding rod; 32. electromagnetic block; 33. magnetic block; 34. retaining piece; 35. ring body; 41. driving rod; 42. rotating rod; 43. protective plate; 44. outer sleeve; 45. groove; 46. channel; 47. inner sleeve; 48. lug; 49. support seat; 51. telescopic sleeve; 52. telescopic rod; 53. first connecting sleeve; 54. second connecting sleeve; 55. telescopic piece; 56. card slot; 57. first flange; 58. telescopic sliding rod; 59. bayonet; 61. second flange; 62. rotating telescopic member; 63. supporting telescopic member; 64. gear; 65. toothed ring. Detailed implementation mode

[0060] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it according to the text of the specification.

[0061] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0062] Embodiment 1:

[0063] As Figure 1 shown, the present invention provides a light tunnel drilling rig, including:

[0064] A vehicle body 1, a support arm 2 and a drilling arm 3 connected in sequence, the drilling arm 3 is detachably connected to the support arm 2 through a docking unit, and the drilling arm 3 is set as any one of a deep hole drilling arm and a rock bolt drilling arm;

[0065] A control unit, the control unit is connected to the support arm 2 and the drilling arm 3, and the control unit includes a deep hole drilling rig module and a rock bolt drilling rig module, which are respectively used to control the actions of the deep hole drilling arm and the rock bolt drilling arm;

[0066] A safety protection unit, the safety protection unit is arranged on the docking unit, and is used to monitor the installation state of the drilling arm 3 and the support arm 2 and issue an alarm.

[0067] The working principle and beneficial effects of the above technical solution are as follows:

[0068] A light tunnel drilling rig includes three structural modules: a vehicle body 1, a support arm 2 and a drilling arm 3. The drilling arm 3 can be set as any one of a deep hole drilling arm and a rock bolt drilling arm, and the two drilling arms 3 have corresponding power systems and control modules. When the drilling rig is in use, according to the adopted operation mode, the appropriate drilling arm 3 is selected, and the drilling arm 3 is installed on the support arm 2 through the docking unit; the control unit controls the actions of the support arm 2 and the drilling arm 3, moves the drill pipe or rock bolt to the preset position for drilling operations; the safety protection unit is used to detect the connection state of the drilling arm 3 and the support arm 2, and when there is a risk of detachment, an alarm is activated and the staff stops the machine for maintenance.

[0069] Through the above structural design, a lightweight tunnel drill is provided. It adopts a modular body structure. The drill arm 3 can be replaced according to the operation requirements, realizing the integrated design of a deep-hole drill and a bolt drill, solving the problem of high operation cost of simultaneously equipping two types of drills; at the same time, it solves the problem that when two drill arms 3 are simultaneously arranged on the vehicle body 1, the volume and mass of the tunnel drill are too large; the deep-hole drill arm and the bolt drill arm are respectively used as two independent modules, and each module has its own power system and control unit, improving the compatibility of the two drill arms 3 with the drill; and it can monitor the installation state of the drill arm 3 and the support arm 2 during use, timely discover and handle potential safety hazards, and ensure the continuous and stable operation of the equipment.

[0070] Embodiment 2:

[0071] As Figures 2 - 6 shown, on the basis of the above Embodiment 1, the docking unit includes:

[0072] A docking hole 11 is arranged at the end of the drill arm 3, and an electromagnetic block 32 is arranged at the bottom of the docking hole 11;

[0073] A docking block 13 is arranged on the docking plate 14 at the end of the support arm 2. When the drill arm 3 is installed, the docking block 13 is installed in the docking hole 11. A magnetic block 33 is arranged at the end of the docking block 13, and the electromagnetic block 32 attracts the magnetic block 33 after being electrified.

[0074] The working principle and beneficial effects of the above technical solution are:

[0075] When the docking unit is used, the docking block 13 is aligned with the docking hole 11 and inserted into it. At the same time, the electromagnetic block 32 is electrified to make it magnetic and attract the magnetic block 33, so that the docking block 13 is firmly connected in the docking hole 11, and the rapid installation of the drill arm 3 and the support arm 2 can be realized. The installation method is simple and convenient, and the reliability is high.

[0076] Embodiment 3:

[0077] As Figures 2 - 6 shown, on the basis of the above Embodiment 2, a plurality of positioning grooves 12 are arranged on the side wall of the docking hole 11, and positioning blocks 29 are arranged on the side surface of the docking block 13. When the drill arm 3 is installed, the positioning blocks 29 are respectively and correspondingly clamped with the positioning grooves 12.

[0078] The working principle and beneficial effects of the above technical solution are:

[0079] When the docking block 12 is installed in the docking hole 11, the positioning block 29 is closely attached to the side surface of the docking block 12 without affecting the insertion of the docking block 12; after the docking block 12 is installed in the docking hole 11, the positioning block 29 is extended to be clamped with the positioning groove 12, so as to accurately position the axis direction of the docking block 12, which helps to improve the connection stability and the control accuracy of the drill arm 3.

[0080] Example 4:

[0081] As Figures 2 - 6 shown, on the basis of the above Example 3, the docking block 13 includes:

[0082] A positioning cavity 21 is arranged on one side of the docking block 13 close to the docking plate 14;

[0083] Guide posts 22, two guide posts 22 are horizontally connected to the inner wall of the positioning cavity 21. A guide plate 23 and a pre-pressure plate 24 are slidably connected to the guide posts 22. The pre-pressure plate 24 is located on the side of the guide posts 22 away from the docking plate 14. A spring is connected between the guide plate 23 and the pre-pressure plate 24, and the spring is sleeved on the guide posts 22;

[0084] A screw rod 25 is screwed to the center of the pre-pressure plate 24 and is arranged parallel to the guide posts 22;

[0085] A push rod 26 is slidably connected to the side wall of the docking block 13. The inner end of the push rod 26 is hinged to the guide plate 23 through a connecting rod 27; At least two push rods 26 are provided, and a plurality of push rods 26 are evenly arranged along the circumferential direction of the docking block 13;

[0086] A positioning plate 28 is connected to the outer end of the push rod 26 and is arranged outside the docking block 13. A plurality of positioning blocks 29 are evenly connected to the outside of the positioning plate 28, and the positioning blocks 29 are perpendicularly arranged to the positioning plate 28.

[0087] The working principle and beneficial effects of the above technical solution are as follows:

[0088] When installing the docking block 13, rotate the screw rod 25. The screw rod 25 is in threaded transmission with the pre-pressure plate 24, so that the pre-pressure plate 24 slides along the guide posts 22. The pre-pressure plate 24 gradually approaches the guide plate 23. The spring between the pre-pressure plate 24 and the guide plate 23 is under pressure, and pushes the guide plate 23 to move towards the side close to the docking plate 14; During the movement of the guide plate 23, the connecting rod 27 is driven to rotate, so that the push rod 26 moves towards the outside of the docking block 13, the positioning plate 28 moves outwards, and the positioning block 29 is clamped in the positioning groove 12, that is, the driving of the positioning block 29 is realized; A plurality of push rods 26 are provided, and correspondingly a plurality of positioning plates 28 are also provided, which can improve the clamping effect between the positioning block 29 and the positioning groove 12 and improve the limit reliability; After the positioning block 29 is clamped with the positioning groove 12, continue to rotate the screw rod 25 to further reduce the distance between the pre-pressure plate 24 and the guide plate 23, that is, further compress the spring, and improve the connection stability between the positioning block 29 and the positioning groove 12.

[0089] Example 5:

[0090] As Figures 2 - 6As shown, on the basis of the above-mentioned Embodiment 4, at least two sliding rods 31 are connected to the inner side of the positioning plate 28. The sliding rods 31 are slidably connected to the side wall of the docking block 13, and a retaining piece 34 is connected to the inner end of the sliding rod 31.

[0091] The working principle and beneficial effects of the above technical solution are as follows:

[0092] The sliding rods 31 are arranged on the positioning plate 28. When the push rod 26 moves, the sliding rods 31 slide relative to the side wall of the docking block 13, guiding the movement of the push rod 26, improving the synchronization of the movement on both sides of the positioning plate 28, and effectively preventing the problem that the positioning plate 29 tilts and the positioning block 29 cannot be accurately engaged with the positioning groove 12.

[0093] Embodiment 6:

[0094] As Figures 2 - 6 shown, on the basis of the above-mentioned Embodiment 4, the docking block 13 further includes:

[0095] A driving rod 41 is movably arranged on the guide plate 23. One end of the driving rod 41 is connected with a rotating rod 42 through a spline, and the rotating rod 42 is connected with the screw rod 25; the other end of the driving rod 41 passes through the docking plate 14 and is connected with a knob; a ring body 35 is connected to the driving rod 41.

[0096] The working principle and beneficial effects of the above technical solution are as follows:

[0097] When the docking block 13 is used, rotating the knob drives the driving rod 41 to rotate. The driving rod 41 drives the rotating rod 42 to rotate through the spline, thereby realizing the driving of the screw rod 25; the end of the driving rod 31 rotates relative to the guide plate 23. When the guide plate 23 slides along the guide post 22 to a preset position, the end of the driving rod 31 is separated from the guide plate 23, which can effectively avoid accidentally touching the knob and the driving rod 41 after the docking block 13 is installed, and affecting the guide plate 23 and the positioning block 28.

[0098] Embodiment 7:

[0099] On the basis of the above-mentioned Embodiment 3, the safety protection unit includes:

[0100] A pressure sensor is arranged at the end of the positioning block 29 for detecting the pressure situation when the positioning block 29 is installed in the positioning groove 12;

[0101] An alarm is arranged on the vehicle body 1. The alarm and the pressure sensor are electrically connected to a controller, and the controller controls the operation of the alarm according to the pressure detection value.

[0102] The working principle and beneficial effects of the above technical solution are as follows:

[0103] After the docking block 13 is installed, the end of the positioning block 29 contacts the bottom of the positioning groove 12 and maintains a certain pressure. A pressure sensor is used to detect the pressure on the end of the positioning block 29. When the pressure values detected by each positioning block 29 exceed the preset value, it indicates that the positioning block 29 is stably installed and the drilling arm 3 and the support arm 2 are stably installed. When the pressure value of one or more positioning blocks 29 is detected to be less than the preset value, it indicates that there is a risk of loosening between the positioning block 29 and the positioning groove 12. The controller activates the alarm to alert the staff to stop the machine for maintenance and timely discover and handle potential safety hazards to ensure the continuous and stable operation of the equipment.

[0104] Embodiment 8:

[0105] As Figures 2 - 6 shown, on the basis of the above Embodiment 6, the safety protection unit further includes:

[0106] A protective plate 43, which is rotatably connected to the docking plate 14, and the driving rod 41 passes through the protective plate 43;

[0107] An outer sleeve 44, which is connected to the center of the inner wall of the positioning cavity 21 and is arranged close to the protective plate 43. A groove 45 is provided at the end of the outer sleeve 44, and a channel 46 connected to the inner cavity of the outer sleeve 44 is provided at the end of the groove 45;

[0108] An inner sleeve 47, which is movably arranged in the outer sleeve 44. One end of the inner sleeve 47 is provided with a lug 48, and the lug 48 is clamped in the groove 45; the other end of the inner sleeve 47 passes through the docking plate 14 and is connected to the protective plate 43; the driving rod 41 passes through the center of the inner sleeve 47, and the ring body 35 is rotatably connected to the annular groove on the inner sleeve 47;

[0109] A support seat 49, a plurality of support seats 49 are evenly connected to one side of the inner wall of the positioning cavity 21 close to the docking plate 14. An elastic telescopic member is installed in the support seat 49, and the elastic telescopic member is electrically connected to the controller. The elastic telescopic member passes through the docking plate 14 and is connected to the protective plate 43. An arc-shaped groove for the movement of the elastic telescopic member is provided on the protective plate 43.

[0110] The working principle and beneficial effects of the above technical solution are:

[0111] When the safety protection unit is in use, when the controller detects abnormal pressure, the elastic telescopic member in the support seat 49 is automatically activated to rotate and extend the elastic telescopic member; the rotation of the elastic telescopic member drives the protective plate 43 to rotate, and the protective plate 43 synchronously drives the inner sleeve 47 to rotate within the outer sleeve 44, causing the lug 48 to rotate within the groove 45 until the lug 48 rotates to correspond to the channel 46. At this time, the limit on the inner sleeve 47 is released, enabling it to move along the axis; as the elastic telescopic member extends, it pushes the protective plate 43 to move away from the docking plate 14; the protective plate 43 drives the inner sleeve 47 to move outwards, and under the cooperation of the ring body 35 and the annular groove, drives the drive rod 41 to move outwards; the end of the drive rod 41 comes into contact with the guide plate 23 again; and as the drive rod 41 moves, it drives the guide plate 23 to move towards the docking plate 14 direction, thereby driving the positioning plate 28 to move outwards, causing the positioning block 29 to be tightly clamped in the positioning groove 12 to maintain a stable installation state.

[0112] Through the above structural design, when an abnormal pressure situation is detected, the protective plate 43 is automatically driven to act, causing the drive rod 41 to act to press the guide plate 23 tightly, and then pressing the positioning block 29 back tightly into the positioning groove 12, playing an automatic locking function, automatically performing safety protection when there is a risk of the drill arm 3 falling off, delaying the falling time of the drill arm 3, effectively improving the safety of the equipment; at the same time, the staff can intuitively understand the usage status of the safety protection unit based on the position state of the protective plate 43; the action of the protective plate 43 includes two processes of rotation and axial movement, reducing the possibility of accidental activation of the protective plate 43 during the use of the drill.

[0113] Embodiment 9:

[0114] As Figure 7 shown, on the basis of the above Embodiment 8, a toothed ring 65 is connected to the inner side of the protective plate 43, and a plurality of gears 64 are meshed and connected to the inner side of the toothed ring 65. The gears 64 are axially connected to the protective plate 43.

[0115] As Figures 8 - 11 shown, the elastic telescopic member includes:

[0116] A telescopic sleeve 51, the side wall of the telescopic sleeve 51 is made of an elastic material, and the two end caps are made of a rigid material. The two end caps of the telescopic sleeve 51 are respectively connected to the end of the support seat 49 and the gear 64;

[0117] A telescopic rod 52, a plurality of telescopic rods 52 are arranged inside the telescopic sleeve 51. The two ends of the telescopic rod 52 are respectively connected to the two end caps of the telescopic sleeve 51. The telescopic rod 52 includes a plurality of telescopic joints connected in sequence;

[0118] The expansion joint includes a first connecting sleeve 53, a second connecting sleeve 54 and an expansion piece 55. Clamping grooves 56 and a first flange 57 are respectively arranged at both ends of the first connecting sleeve 52; a telescopic slide rod 58 and a bayonet 59 are respectively arranged at both ends of the second connecting sleeve 54, and a second flange 61 is connected to the middle of the second connecting sleeve 54; the expansion piece 55 is connected between the first flange 57 and the second flange 61, and the expansion piece 55 is arranged in a Z shape; the bayonet 59 of the second connecting sleeve 54 is connected to the clamping groove 56 of the first connecting sleeve 53 on the adjacent expansion joint;

[0119] Rotate the telescopic member 62. The telescopic member 62 is fittingly connected to the outer wall of the telescopic sleeve 51. Both ends of the telescopic member 62 are connected to the end covers at both ends of the telescopic sleeve 51, and the telescopic member 62 is inclined relative to the axis of the telescopic sleeve 51; the telescopic member 62 is arranged in a wavy shape;

[0120] The supporting telescopic member 63 is fittingly connected to the inner wall of the telescopic sleeve 51. Both ends of the supporting telescopic member 63 are connected to the end covers at both ends of the telescopic sleeve 51. The supporting telescopic member 63 is inclined relative to the axis of the telescopic sleeve 51, and the inclination direction is opposite to that of the telescopic member 62; the supporting telescopic member 63 is arranged in a wavy shape;

[0121] A heating wire is arranged on the inner wall of the support seat 49, and the heating wire is electrically connected to the controller;

[0122] The expansion piece 55 and the telescopic member 62 are made of a shape memory alloy material. The expansion piece 55 and the telescopic member 62 tend to straighten after the temperature rises.

[0123] The working principle and beneficial effects of the above technical solution are as follows:

[0124] When the safety protection unit is in use, the controller controls the heating wire to heat up, increasing the temperature inside the support base 49. The temperature is preferentially transmitted to the rotary telescopic member 62 outside the elastic telescopic member, causing it to deform and elongate. Since the rotary telescopic member 62 is arranged obliquely, the inner support telescopic member 63 does not actively deform. Therefore, as the rotary telescopic member 62 elongates, the telescopic sleeve 51 twists. One end cover of the rotary telescopic member 62 is fixed to the support base 49, and the other end cover drives the gear 64 to rotate. The gear 64 meshes and drives with the inner side of the toothed ring 65, driving the protective plate 43 to rotate itself, that is, realizing the rotary drive of the protective plate 43. As the temperature is transmitted to the inside of the elastic telescopic member, the expansion piece 55 expands after the temperature rises, causing the first flange 57 of the first connecting sleeve 52 to move away from the second flange 61 of the second connecting sleeve 54, and the telescopic slide rod 58 slides along the inner wall of the first connecting sleeve 53. Under the combined action of multiple telescopic joints, the total length of the telescopic rod 52 increases, further driving the overall length of the elastic telescopic member to increase, and pushing the protective plate 43 to move away from the docking plate, that is, realizing the drive for the protective plate 43 to move in the axial direction. When the safety protection unit is not in use, the controller cuts off the power supply of the heating wire to cool it down, and the deformation of the expansion piece 55 and the rotary telescopic member 62 is restored, causing the protective plate 43 to move in the reverse direction and rotate to reset. An arc-shaped groove for the movement of the elastic telescopic member is provided on the protective plate 43, without hindrance during the movement of the elastic telescopic member.

[0125] Through the above structural design, the expansion piece 55 and the rotary telescopic member 62 are made of shape memory alloy materials. Utilizing the deformation of the shape memory alloy, the rotation and telescopic drive of the elastic telescopic member are effectively realized. After the elastic telescopic member rotates and elongates, it can maintain a certain stiffness, thereby ensuring the pressure of the drive rod 41 on the guide plate 23 and improving the reliability of safety protection. The combined expansion piece 55 and rotary telescopic member 62 reduce the power source during the safety protection process, ensure the coherence of the protection action, and reduce the difficulty of protection control. And the shape memory alloy material can restore deformation after cooling, facilitating subsequent repeated use.

[0126] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0127] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0128] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A light tunnel drilling rig, characterized in that: include: A vehicle body (1), a support arm (2) and a drill arm (3) connected in sequence, the drill arm (3) and the support arm (2) being detachably connected via a docking unit, and the drill arm (3) being configured as any one of a deep hole drill arm and an anchor drill arm; A control unit, the control unit is connected to the support arm (2) and the drilling arm (3), the control unit comprising a deep hole drilling machine module and an anchor drilling machine module, which are used to control the movements of the deep hole drilling arm and the anchor drilling arm respectively; A safety protection unit, which is arranged on the docking unit and is used to monitor the installation status of the drilling arm (3) and the support arm (2) and to issue an alarm; The docking unit includes: A docking hole (11), the docking hole (11) being arranged at the end of the drill arm (3), and an electromagnetic block (32) being arranged at the bottom of the docking hole (11); A docking block (13), the docking block (13) being arranged on a docking plate (14) at the end of the support arm (2); when the drill arm (3) is installed, the docking block (13) is installed in the docking hole (11); a magnetic block (33) is arranged at the end of the docking block (13); and the electromagnetic block (32) attracts the magnetic block (33) when power is supplied; A plurality of positioning grooves (12) are arranged on the side wall of the docking hole (11), and a positioning block (29) is arranged on the side of the docking block (13). When the drill arm (3) is installed, the positioning blocks (29) are connected to the positioning grooves (12) in a one-to-one corresponding manner. The safety protection unit includes: a pressure sensor, the pressure sensor being arranged at the end of the positioning block (29) and being used to detect the pressure applied to the positioning block (29) when installed in the positioning groove (12); An alarm is arranged on the vehicle body (1); the alarm and the pressure sensor are electrically connected to a controller; and the controller controls the operation of the alarm according to the pressure detection value.

2. A light tunnel drilling rig according to claim 1, characterized in that: The docking block (13) comprises: A positioning cavity (21), the positioning cavity (21) being arranged on a side of the docking block (13) close to the docking plate (14); Guide columns (22), two guide columns (22) are horizontally connected to the inner wall of the positioning cavity (21), a guide plate (23) and a pre-pressing plate (24) are slidably connected to the guide columns (22), the pre-pressing plate (24) is located on a side of the guide columns (22) away from the docking plate (14), a spring is connected between the guide plate (23) and the pre-pressing plate (24), and the spring is sleeved on the guide columns (22); The screw rod (25) is screwed to the center of the pre-pressing plate (24) and is arranged parallel to the guide column (22).

3. A light tunnel drilling rig according to claim 2, characterized in that: The docking block (13) further comprises: A push rod (26), the push rod (26) is slidably connected to the side wall of the docking block (13), and the inner end of the push rod (26) is hinged to the guide plate (23) through a connecting rod (27); at least two push rods (26) are provided, and the plurality of push rods (26) are evenly arranged along the circumferential direction of the docking block (13); A positioning plate (28) is connected to the outer end of the push rod (26) and arranged outside the docking block (13); a plurality of positioning blocks (29) are evenly connected to the outer side of the positioning plate (28), and the positioning blocks (29) are arranged perpendicular to the positioning plate (28).

4. A light tunnel drilling rig according to claim 3, characterized in that: At least two slide bars (31) are connected to the inner side of the positioning plate (28). The slide bars (31) are slidably connected to the side wall of the docking block (13). The inner ends of the slide bars (31) are connected to the blocking pieces (34).

5. A light tunnel drilling rig according to claim 3, characterized in that: The docking block (13) further comprises: A driving rod (41) is movably arranged on the guide plate (23); one end of the driving rod (41) is connected to a rotating rod (42) via a spline, and the rotating rod (42) is connected to the screw rod (25); the other end of the driving rod (41) passes through the docking plate (14) and is connected to the knob; and a ring body (35) is connected to the driving rod (41).

6. A light tunnel drilling rig according to claim 5, characterized in that: The safety protection unit also includes: A protective plate (43), the protective plate (43) is rotatably connected to the docking plate (14), and the driving rod (41) passes through the protective plate (43); An outer sleeve (44), the outer sleeve (44) being connected to the center of the inner wall of the positioning cavity (21) and being disposed close to the protective plate (43), the end of the outer sleeve (44) being provided with a groove (45), and the end of the groove (45) being provided with a channel (46) connected to the inner cavity of the outer sleeve (44); An inner sleeve (47) is movably disposed in the outer sleeve (44); a lug (48) is disposed at one end of the inner sleeve (47); the lug (48) is snap-fitted into the groove (45); the other end of the inner sleeve (47) passes through the docking plate (14) and is connected to the protective plate (43); the driving rod (41) passes through the center of the inner sleeve (47), and the ring body (35) is rotatably connected to the annular groove on the inner sleeve (47).

7. A light tunnel drilling machine according to claim 6, characterized in that: The safety protection unit also includes: A support seat (49), wherein a plurality of support seats (49) are evenly connected to a side of the inner wall of the positioning cavity (21) close to the docking plate (14), an elastic telescopic member is installed in the support seat (49), the elastic telescopic member is electrically connected to the controller, the elastic telescopic member passes through the docking plate (14) and is connected to the protective plate (43), and an arc groove is provided on the protective plate (43) for the elastic telescopic member to move.

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