A type of two-arm anchor bolt trolley

Abstract

This utility model discloses a two-arm anchor bolt trolley. The two-arm anchor bolt trolley includes: a trolley body, a temporary support structure located at the front end of the trolley body, and a drilling mechanism mounted on the trolley body via a sliding mechanism; the sliding mechanism includes a sliding track, a sliding part, and a driving part for driving the sliding part to slide on the sliding track; the drilling mechanism includes a drill and a drill arm capable of pitching, lifting, and extending; wherein, the temporary support structure is a top-to-bottom structure independently of the sliding mechanism; the drill arm is hinged to the sliding part. This invention solves the problem of low working efficiency of existing two-arm anchor bolt drilling rigs, enabling the two-arm anchor bolt trolley to complete the support operation of three rows of anchor bolts without moving the machine, solving the problem of frequent machine relocation when supporting multiple rows of anchor bolts, and improving the anchor bolt support efficiency of the anchor bolt trolley.

Description

Technical Field

[0001] This utility model belongs to the field of anchor bolt trolley technology, and more specifically, it relates to a two-arm anchor bolt trolley. Background Technology

[0002] When existing two-arm anchor bolt drilling rigs are used for support work in underground coal mines, the drilling mechanism lacks sufficient freedom of movement, making it difficult to cover multiple rows of anchor bolt holes without moving the equipment, resulting in low efficiency. Without moving the anchor bolt trolley, it can typically only support one row of anchor bolts or a portion of the second row. When supporting multiple rows of anchor bolts, frequent machine relocation is required, further reducing work efficiency.

[0003] To address the low efficiency of two-arm anchor bolt drilling rigs, related technologies either incorporate multiple drill arms or allow the rig to slide. However, existing sliding drilling rigs integrate the slide rail and temporary support into a single design. When the temporary support is subjected to roof pressure, the enormous load (up to several tons) acts directly on the sliding mechanism, easily leading to track deformation, trolley jamming, or damage to the cylinder seals, affecting sliding accuracy and even the safety and reliability of the entire equipment. Utility Model Content

[0004] To address the problem of low efficiency in existing two-arm anchor bolt drilling rigs that struggle to cover multiple rows of anchor bolt holes without repositioning the equipment, this invention aims to provide a two-arm anchor bolt trolley. This two-arm anchor bolt trolley includes: a trolley body, a temporary support structure at the front end of the trolley body, and a drilling mechanism mounted on the trolley body via a sliding mechanism. The sliding mechanism includes a sliding track, a sliding part, and a drive part for driving the sliding part to slide on the sliding track. The drilling mechanism includes a drill and a drill arm capable of pitching, lifting, and extending. The temporary support structure is a top-to-bottom structure independent of the sliding mechanism. The drill arm is hinged to the sliding part.

[0005] Compared with existing technologies, the technical advantages of this solution are as follows: By mounting the drilling mechanism on the vehicle body via a sliding mechanism, and including a drilling rig and a drill arm capable of pitching, lifting, and extending, the combination of the sliding stroke of the sliding mechanism and the pitching / extending stroke of the drill arm provides sufficient freedom for the drilling rig, expanding its working range. This allows the two-arm anchor bolt trolley to complete the support operation of three rows of anchor bolts without relocation, solving the problem of frequent relocation when supporting multiple rows of anchor bolts and improving the anchor bolt support efficiency of the anchor bolt trolley. Furthermore, since the temporary support structure is an independent, top-to-bottom structure separate from the sliding mechanism, the load borne by the temporary support structure under roof pressure will not act on the sliding mechanism, resulting in higher safety and reliability of the entire equipment and higher sliding accuracy of the sliding mechanism.

[0006] Furthermore, two sliding mechanisms are symmetrically arranged on the vehicle body; the two sliding mechanisms independently drive the two drilling mechanisms to slide through the drill arms that are hinged to them.

[0007] Compared to existing technologies, this technical solution achieves the following advantages: by setting up two sliding mechanisms to independently control the two drill arms of the equipment, the two drilling mechanisms can operate simultaneously and independently. For example, while one drilling rig is drilling, the other can simultaneously install anchor bolts or anchor cables; or the two drilling rigs can be responsible for support tasks at different rows and positions. Compared to a single sliding mechanism with two drill arms, this parallel operation mode almost doubles the support workload per unit time, greatly improving work efficiency. Furthermore, the symmetrical layout conforms to engineering mechanics design, helping to maintain the overall balance and stability of the equipment during operation. Especially when the two drill arms are operating in asymmetrical positions, the symmetrical sliding track design can better distribute the load and ensure equipment stability.

[0008] Furthermore, the sliding part includes: a sliding mounting seat and a drill arm mounting seat; wherein, the bottom of the sliding mounting seat is provided with a slider that cooperates with the first sliding track; the drill arm mounting seat is swaying left and right on the sliding mounting seat via a rotating shaft; the rear end of the drill arm is hinged on the drill arm mounting seat, one end of the pitch cylinder is hinged to the bottom of the drill arm, and the other end is hinged on the drill arm mounting seat to drive the drill arm to pitch and lift.

[0009] Compared with existing technologies, the technical effects achieved by this solution are as follows: By configuring the sliding part in the form of a sliding mounting seat and a drill arm mounting seat, the sliding of the drilling mechanism can be guided by the cooperation of the slider of the sliding mounting seat and the first sliding rail, thereby improving the sliding accuracy. Compared with other sliding structures such as gear transmission, the design of the slider and the sliding rail has the advantages of high load-bearing capacity, high rigidity, and high impact resistance, resulting in higher reliability and making it more suitable for harsh downhole conditions and high load requirements. By setting both the drill arm and the pitch cylinder to be hinged to the drill arm mounting seat, the drill arm can swing left and right relative to the sliding mechanism through the hinge, expanding the working range of the drilling rig; the pitch cylinder can realize the pitch extension and angle adjustment of the drill arm to meet different drilling inclination angle requirements.

[0010] Furthermore, a second sliding rail is provided at the front end of the drill arm, through which the drilling rig can be slidably positioned at the front end of the drill arm.

[0011] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: by setting a second sliding rail at the front end of the drill arm for the drilling rig to slide, the drilling rig can slide along the length direction of the drill arm, realize the fine adjustment of the position of the drilling rig on the drill arm, supplement the sliding stroke of the sliding mechanism, further increase the sliding stroke of the drilling rig, and avoid the length of the sliding rail of the sliding mechanism being too long, which would increase the length of the whole machine.

[0012] Furthermore, the sliding stroke of the sliding part is 1500mm.

[0013] Compared with existing technologies, the technical effects achieved by this solution are as follows: A 1500mm sliding stroke, verified through engineering, can cover the spacing of three rows of anchor bolts in a standard coal mine roadway (typically 500mm x 3 = 1500mm), representing the optimal stroke design for achieving multi-row support without relocation. If the sliding stroke is too short, it will fail to cover the three-row spacing, necessitating relocation; if the stroke is too long, it will increase the length and weight of the equipment.

[0014] Furthermore, the two-arm anchor bolt trolley also includes an operating platform, which is rotatably mounted on the drill arm and located at the rear end of the second sliding track.

[0015] Compared to existing technologies, the technical advantages of this solution are as follows: Compared to a separate mobile platform, integrating the operating platform onto the drill arm allows it to move and position synchronously with the drill arm, resulting in greater operational convenience. Furthermore, it eliminates the need for additional control mechanisms, reducing equipment complexity and lowering the failure rate. Positioning the operating platform at the rear of the second sliding rail ensures that operators remain in a safe area behind the drilling rig, enhancing operational safety. The ability to flip the operating platform further reduces the overall size of the equipment.

[0016] Furthermore, the temporary support structure includes a support top, a vertical telescopic arm, a horizontal telescopic arm, and a ground support assembly; wherein, the vertical telescopic arm is telescopically installed below the support top for adjusting the height of the support top; the ground support assembly is connected to the bottom of the vertical telescopic arm; the vertical telescopic arm is connected to the front end of the vehicle body through the horizontal telescopic arm.

[0017] Compared with existing technologies, the technical effects achieved by this solution are as follows: the support component can provide a support force of 5 tons, significantly improving the support performance of the temporary support component. Since the temporary support structure is set up with an independent sliding mechanism, it cannot move synchronously with the drilling rig. Therefore, a horizontal telescopic boom needs to be extended forward to expand the support range, so as to support the roof in front when the drilling rig is supporting multiple rows of rows, ensuring the safety of the operation.

[0018] Furthermore, the vehicle body includes a main body section and a running gear section disposed below the main body section; wherein, the running gear section is a tracked running gear section.

[0019] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: Considering that wheeled walking parts are prone to slipping or sinking in muddy or gravel tunnels, the walking parts are set as tracked walking parts, which can provide strong obstacle crossing ability and low ground pressure, adapt to the working conditions of loose floor in the mine, thereby ensuring the flexibility of equipment movement.

[0020] Furthermore, the two-arm anchor bolt trolley also includes a rear support unit, which is telescopically located behind the traveling unit.

[0021] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting a rear support at the rear of the traveling section, the rear support can be extended during operation, ensuring the running stability of the entire vehicle and preventing the vehicle body from shaking during drilling, which would affect positioning accuracy and operational safety.

[0022] Furthermore, the two-arm anchor bolt trolley also includes a shovel plate section, located in front of the traveling section, used for pushing materials and supporting the machine body.

[0023] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the shovel plate has both a material pushing and sorting function (keeping the working surface clean) and an auxiliary support function (increasing the front grounding area), thereby improving the safety of the working environment and the stability of the equipment.

[0024] The technical effects and advantages of this utility model are as follows: 1. By installing the drilling mechanism on the vehicle body via a sliding mechanism, and including the drilling rig and a drill arm capable of pitching, lifting, and extending, the combination of the sliding stroke of the sliding mechanism and the pitching / extending stroke of the drill arm provides sufficient freedom for the drilling rig, expanding its working range. This allows the two-arm anchor bolt trolley to complete the support work for three rows of anchor bolts without moving the machine, solving the problem of frequent machine relocation when supporting multiple rows of anchor bolts and improving the anchor bolt support efficiency of the anchor bolt trolley. Furthermore, since the temporary support structure is an independent, top-to-bottom structure separate from the sliding mechanism, the load borne by the temporary support structure under roof pressure will not act on the sliding mechanism, resulting in higher safety and reliability of the entire equipment and higher sliding accuracy of the sliding mechanism.

[0025] 2. The ground support component can provide 5 tons of support force, significantly improving the support performance of the temporary support component. Since the temporary support structure is set up with an independent sliding mechanism, the temporary support structure cannot move synchronously with the drilling rig. It is necessary to extend the support range forward with a horizontal telescopic boom to support the roof in front when the drilling rig is supporting multiple rows, so as to ensure the safety of the operation. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a two-arm anchor bolt trolley provided by this utility model; Figure 2 yes Figure 1 A schematic diagram showing the sliding mechanism and temporary support components of the two-arm anchor bolt trolley sliding to the foremost position; Figure 3 yes Figure 1 Schematic diagram of the sliding mechanism; Figure 4 yes Figure 3 A schematic diagram of the structure of a single sliding mechanism; Figure 5 yes Figure 3 Schematic diagram of the middle sliding track; Figure 6 yes Figure 3 Schematic diagram of the middle sliding part; Figure 7 yes Figure 3 A schematic diagram of the drive unit.

[0027] In the picture: 100. Two-arm anchor bolt trolley; 10. Car body; 11. Main body section; 12. Traveling section; 20. Temporary support structure; 30. Sliding mechanism; 31. First sliding track; 32. Sliding section; 321. Sliding mounting seat; 322. Drill arm mounting seat; 33. Drive section; 40. Drilling mechanism; 41. Drilling rig; 42. Second sliding track; 43. Drill arm; 44. Pitch cylinder; 50. Operating platform; 60. Rear support section; 70. Shovel plate section. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0029] See Figure 1 This is a structural schematic diagram of a two-arm anchor bolt trolley 100 provided by this utility model. Combined with... Figures 1 to 7The two-arm anchor bolt trolley 100 includes, for example, a vehicle body 10, a temporary support structure 20 disposed at the front end of the vehicle body 10, and a drilling mechanism 40 mounted on the vehicle body 10 via a sliding mechanism 30; the sliding mechanism 30 includes a first sliding track 31, a sliding part 32, and a driving part 33 for driving the sliding part 32 to slide on the first sliding track 31; the drilling mechanism 40 includes a drill rig 41 and a drill arm 43 capable of pitching, lifting, and extending; wherein, the temporary support structure 20 is a top-to-bottom structure independently of the sliding mechanism 30; the drill arm 43 is hinged to the sliding part 32.

[0030] Understandably, by mounting the drilling mechanism 40 on the vehicle body via the sliding mechanism 30, and by including the drilling rig 41 and the drill arm 43 capable of pitching, lifting, and extending, the combination of the sliding stroke of the sliding mechanism 30 and the pitching and extending stroke of the drill arm 43 provides sufficient freedom to the drilling rig 41, expanding its working range. This allows the two-arm anchor bolt trolley 100 to complete the support operation of three rows of anchor bolts without relocation, solving the problem of frequent relocation when supporting multiple rows of anchor bolts and improving the anchor bolt support efficiency of the two-arm anchor bolt trolley 100. Furthermore, since the temporary support structure 20 is a top-to-bottom structure independently of the sliding mechanism 30, the load borne by the temporary support structure 20 under the pressure of the roof does not act on the sliding mechanism 30, resulting in higher safety and reliability of the entire equipment and higher sliding accuracy of the sliding mechanism 30.

[0031] Furthermore, two sliding mechanisms 30 are symmetrically arranged on the vehicle body 10; wherein, the two sliding mechanisms 30 independently drive the two drilling mechanisms 40 to slide through the drill arms 43 hinged on them.

[0032] Understandably, by setting up two sliding mechanisms 30 to independently control the two drill arms 43 of the equipment, the two drilling mechanisms 40 can operate simultaneously and independently. For example, while one drilling rig 41 is drilling, the other drilling rig 41 can simultaneously install anchor bolts or anchor cables; or the two drilling rigs 41 can be responsible for support tasks at different rows and positions. Compared to a single sliding mechanism 30 paired with two drill arms 43, this parallel operation mode almost doubles the support workload per unit time, greatly improving work efficiency. In addition, the symmetrical layout conforms to engineering mechanics design, which helps maintain the overall balance and stability of the equipment during operation. Especially when the two drill arms 43 are operating in asymmetrical positions, the symmetrical sliding track design can better distribute the load and ensure equipment stability.

[0033] Furthermore, the sliding part 32 includes: a sliding mounting base 321 and a drill arm mounting base 322; wherein, the bottom of the sliding mounting base 321 is provided with a slider that cooperates with the first sliding track 31; the drill arm mounting base 322 is sway-left and right on the sliding mounting base 321 via a rotating shaft; the rear end of the drill arm 43 is hinged to the drill arm mounting base 322, and one end of the pitch cylinder 44 is hinged to the bottom of the drill arm 43, and the other end is hinged to the drill arm mounting base 322 to drive the drill arm 43 to pitch and lift.

[0034] Understandably, by configuring the sliding part 32 as a sliding mounting base 321 and a drill arm mounting base 322, the sliding of the drilling mechanism 40 can be guided by the cooperation of the slider of the sliding mounting base 321 and the first sliding rail 31, thereby improving the sliding accuracy. Compared with other sliding structures such as gear transmission, the design of the slider and the rail has the advantages of strong load-bearing capacity, good rigidity, and high impact resistance. It is more reliable and more suitable for harsh downhole working conditions and high load requirements. By setting both the drill arm 43 and the pitch cylinder 44 to be hinged to the drill arm mounting base 322, the drill arm 43 can swing left and right relative to the sliding mechanism 30 through the hinge of the drill arm 43 and the drill arm mounting base 322, thereby expanding the working range of the drilling rig 41; the pitch extension and tilt adjustment of the drill arm 43 can be achieved through the pitch cylinder 44 to meet different drilling inclination angle requirements.

[0035] Furthermore, a second sliding rail 42 is provided at the front end of the drill arm 43, and the drill rig 41 is slidably mounted at the front end of the drill arm 43 via the second sliding rail 42.

[0036] It is understandable that by setting a second sliding rail 42 at the front end of the drill arm 43 for the drill rig 41 to slide, the drill rig 41 can slide along the length direction of the drill arm 43, thereby achieving fine adjustment of the position of the drill rig 41 on the drill arm 43, supplementing the sliding stroke of the sliding mechanism 30, further increasing the sliding stroke of the drill rig 41, and avoiding the increase in the overall length of the machine due to the excessive length of the sliding rail of the sliding mechanism 30.

[0037] Furthermore, the sliding stroke of the sliding part 32 is 1500mm.

[0038] Understandably, a 1500mm sliding stroke, as verified by engineering practice, can cover the spacing of three rows of anchor bolts in a standard coal mine roadway (typically 500mm x 3 = 1500mm), making it the optimal stroke design for achieving multi-row support without relocating the machine. If the sliding stroke is too short, it will not be able to cover the three-row spacing, and the machine will still need to be moved; if the stroke is too long, it will increase the length and weight of the equipment.

[0039] Furthermore, the two-arm anchor bolt trolley 100 also includes an operating platform 50, which is rotatably mounted on the drill arm 43 and located at the rear end of the second sliding track 42.

[0040] Understandably, compared to a standalone mobile platform, integrating the operating platform 50 onto the drill arm 43 allows it to move and position synchronously with the drill arm 43, resulting in greater operational convenience. Furthermore, it eliminates the need for additional control mechanisms, reducing equipment complexity and lowering the failure rate. Positioning the operating platform 50 at the rear of the second sliding rail 42 ensures that operators remain in a safe area behind the drilling rig 41, enhancing operational safety. The ability to flip the operating platform 50 further reduces the overall size of the equipment.

[0041] Furthermore, the temporary support structure 20 includes a support top, a vertical telescopic arm, a horizontal telescopic arm, and a ground support assembly; wherein, the vertical telescopic arm is telescopically disposed below the support top for adjusting the height of the support top; the ground support assembly is connected to the bottom of the vertical telescopic arm; the vertical telescopic arm is connected to the front end of the vehicle body 10 through the horizontal telescopic arm.

[0042] Understandably, the support components can provide 5 tons of support force, significantly improving the support performance of the temporary support components. Since the temporary support structure 20 is set by the independent sliding mechanism 30, the temporary support structure 20 cannot move synchronously with the drilling rig 41. It is necessary to extend the support range forward with the horizontal telescopic arm to support the roof in front when the drilling rig 41 is supporting multiple rows of rows, so as to ensure the safety of the operation.

[0043] Furthermore, the vehicle body 10 includes a body section 11 and a running section 12 disposed below the body section 11; wherein, the running section 12 is a tracked running section 12.

[0044] Understandably, considering that wheeled walking parts 12 are prone to slipping or sinking in muddy or gravel tunnels, walking parts 12 are designed as tracked walking parts 12, which can provide strong obstacle crossing ability and low ground pressure, adapt to the working conditions of loose floor plates underground, and thus ensure the flexibility of equipment movement.

[0045] Furthermore, the two-arm anchor bolt trolley 100 also includes a rear support 60, which is telescopically located behind the traveling part 12.

[0046] Understandably, by setting a rear support 60 behind the walking unit 12, the rear support 60 can be extended during operation to ensure the stability of the vehicle and prevent the vehicle body from shaking when the drilling rig 41 is drilling, thus affecting the positioning accuracy and operational safety.

[0047] Furthermore, the two-arm anchor bolt trolley 100 also includes a shovel plate 70, which is located in front of the traveling section 12 and is used for pushing materials and supporting the machine body.

[0048] Understandably, the shovel plate section 70 has both a material pushing and sorting function (keeping the working surface clean) and an auxiliary support function (increasing the front grounding area), improving the safety of the working environment and the stability of the equipment.

[0049] In one specific embodiment, the two-arm anchor bolt trolley 100 includes: a vehicle body 10, which includes a front body connecting the tracked walking unit 12 and the front components, and a rear body connecting the rear components. The hydraulic system and electrical system are located above the rear body, and a rear support leg for supporting the machine body is located at the bottom of the rear body near the walking unit 12. The hydraulic system can drive the support boom to extend and retract, and swing up, down, left, and right. The drilling mechanism 40 for supporting anchor bolts and anchor cables is located on the support boom, and the support boom can drive the drilling mechanism 40 to extend and retract, and swing up, down, left, and right. An operating platform 50 is also provided on the support boom for operators to operate the drilling mechanism 40. A temporary support assembly is slidably located at the front end of the anchor bolt trolley along the length of the vehicle body. A shovel plate 70 for pushing materials and supporting the machine body is located in front of the walking unit 12. Furthermore, the anchor bolt trolley also includes: a sliding mechanism 30. The sliding mechanism 30 is located below the drilling mechanism 40, and its sliding stroke is 1500 mm.

[0050] Understandably, the sliding mechanism's 301500mm sliding stroke, combined with the extension stroke of the drill arm 43, allows the anchor bolt trolley to complete the support operation of three rows of anchor bolts without moving, thereby improving the anchor bolt support efficiency of the anchor bolt trolley and saving the preparation work of moving the machine twice.

[0051] It should be noted that when the existing two-arm anchor bolt drilling rig 41 is used for support work in coal mines, a series of support preparations must first be completed, including moving the two-arm anchor bolt drilling rig 41 to the support position, switching the operating valve to the support position, lowering the shovel and rear support, extending the boom of the temporary support assembly, extending the operating pedal of the operating platform 50, and placing the drill rods and various tools. Then, the hydraulic system is used to control the extension, retraction, up-down and left-right swing of the support boom to adjust the drilling mechanism 40 to the target working position. After the drilling mechanism 40 supports a row of anchor bolts and cables, the mechanisms are retracted, the entire anchor bolt drilling rig 41 is moved, and the previous process is repeated. In other words, the existing two-arm anchor bolt drilling rig 41 requires one relocation and support preparation for each row of anchor bolts supported; supporting three rows of anchor bolts requires three relocation and support preparations.

[0052] In this embodiment, the entire drilling unit (including the drilling rig 41 and the multi-degree-of-freedom drill arm 43) is moved as a whole by the sliding mechanism 30 to expand the working range and form an integrated drilling and anchoring system; the top-to-bottom temporary support mechanism is independently fixed to the front of the vehicle body, and through its horizontal extension and vertical lifting functions, it can achieve advanced support and 5-ton support force.

[0053] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A two-arm jumbo, characterized in that, The two-arm anchor bolt trolley (100) includes: a vehicle body (10), a temporary support structure (20) set at the front end of the vehicle body (10), and a drilling mechanism (40) installed on the vehicle body (10) via a sliding mechanism (30); the sliding mechanism (30) includes a first sliding track (31), a sliding part (32), and a drive part (33) for driving the sliding part (32) to slide on the first sliding track (31); the drilling mechanism (40) includes a drill (41) and a drill arm (43) capable of pitching, lifting, and telescopic; wherein, the temporary support structure (20) is a top-to-bottom structure set independently of the sliding mechanism (30); the drill arm (43) is hinged to the sliding part (32).

2. The two-arm anchor bolt trolley according to claim 1, characterized in that, Two sliding mechanisms (30) are symmetrically arranged on the vehicle body (10); the two sliding mechanisms (30) independently drive the two drilling mechanisms (40) to slide through the drill arms (43) hinged on them.

3. A two-arm jumbo according to claim 1, characterized in that, The sliding part (32) includes a sliding mounting seat (321) and a drill arm mounting seat (322); wherein, the bottom of the sliding mounting seat (321) is provided with a slider that cooperates with the first sliding track (31); the drill arm (43) mounting seat (322) is swaying left and right on the sliding mounting seat (321) via a rotating shaft; the rear end of the drill arm (43) is hinged on the drill arm (43) mounting seat (322), one end of the pitch cylinder (44) is hinged to the bottom of the drill arm (43), and the other end is hinged on the drill arm (43) mounting seat (322) to drive the drill arm (43) to pitch and lift.

4. A two-arm jumbo according to claim 3, c h a r a c t e r i s e d in that The front end of the drill arm (43) is provided with a second sliding rail (42), and the drilling rig (41) can be slidably set at the front end of the drill arm (43) via the second sliding rail (42).

5. A two-arm jumbo according to claim 1, characterized in that, The sliding stroke of the sliding part (32) is 1500mm.

6. A two-arm jumbo according to claim 4, c h a r a c t e r i s e d in that Also includes: The operating platform (50) is rotatably mounted on the drill arm (43) and located at the rear end of the second sliding track (42).

7. The two-arm anchor bolt trolley according to claim 1, characterized in that, The temporary support structure (20) includes a support top, a vertical telescopic arm, a horizontal telescopic arm, and a ground support assembly; wherein, the vertical telescopic arm is telescopically installed below the support top for adjusting the height of the support top; the ground support assembly is connected to the bottom of the vertical telescopic arm; the vertical telescopic arm is connected to the front end of the vehicle body (10) through the horizontal telescopic arm.

8. A two-arm jumbo according to claim 1, characterized in that, The vehicle body (10) includes a body part (11) and a running part (12) disposed below the body part (11); wherein the running part (12) is a tracked running part (12).

9. A two-arm roof bolter as claimed in claim 8, characterised in that, Also includes: The rear support (60) is telescopically located behind the walking part (12).

10. A two-arm roof bolter as claimed in claim 8, characterised in that, Also includes: The shovel plate (70) is located in front of the walking section (12) and is used for pushing materials and supporting the machine body.

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