CN221144330U - Auxiliary positioning device for deepening blast holes of tunnels - Google Patents

Abstract

The application relates to an auxiliary positioning device for deepening a blast hole of a tunnel, which relates to the technical field of tunnel construction and comprises a fixing frame and a positioning assembly; the positioning assembly comprises a jacking rod and a rotating rod; the rotating rod is rotationally connected to the fixing frame; the jacking rod is connected to the fixing frame in a sliding manner, and the sliding direction of the jacking rod along the fixing frame is perpendicular to the rotation axis of the rotating rod along the fixing frame; one end of the rotating rod, which is far away from the fixing frame, is lapped on the jacking rod so as to support the rotating rod by the jacking rod, and when the rotating rod is lapped on the jacking rod, the rotating rod and the jacking rod are in a non-parallel state. The application has the effect of being able to adapt to the needs of more angular drilling.

Description

Auxiliary positioning device for tunnel deepening blasthole

Technical Field

The present application relates to the technical field of tunnel construction, and in particular to an auxiliary positioning device for tunnel deepening blastholes.

Background technique

During tunnel construction, it is necessary to conduct advanced geological prediction and forecast of the tunnel. Deepening blasthole detection is suitable for geological advance detection of tunnels under various geological conditions. During detection, a pneumatic drill is used to drill small holes in the face of the tunnel to obtain geological information. It is mainly used to detect the strength of the surrounding rock around and in front of the face, etc., to provide a basis for tunnel excavation.

Under the related technology, such as the Chinese patent with patent number 201921686449.2, a tunnel deepening blasthole angle control device is disclosed, which includes a fixed frame, a retractable angle adjustment rod and a drill rod positioning rod. The fixed frame is an L-shaped structure, and a plurality of limit holes are arranged on the long side of the fixed frame. The first end of the angle adjustment rod is fixedly connected to the short side of the fixed frame, and the second end of the angle adjustment rod is connected to the limit holes on the long side of the fixed frame by bolts. The drill rod positioning ring includes an upper drill rod positioning ring and a lower drill rod positioning ring; when in use, the side of the fixed frame with the limit holes is attached to the initial support surface of the tunnel support, and the drill rod is drilled along the direction of the upper drill rod positioning ring and the lower drill rod positioning ring. The desired angle can be achieved by adjusting the angle adjustment rod to connect with the corresponding limit holes on the fixed frame.

In the actual operation process, based on different drilling angle requirements, the angle adjustment and fixation of the solutions in the related technology rely on the cooperation of the limit hole and the angle adjustment rod to achieve positioning, and its adjustment range is limited. Therefore, it is urgent to provide a device that can be suitable for more angle drilling requirements.

Utility Model Content

In order to provide a device that can be applied to drilling at more angles, the present application provides an auxiliary positioning device for tunnel deepening blastholes.

This application provides a technical solution that adopts the following:

An auxiliary positioning device for tunnel deepening blastholes, comprising a fixing frame and a positioning assembly;

The positioning assembly includes a lifting rod and a rotating rod;

The rotating rod is rotatably connected to the fixing frame;

The lifting rod is slidably connected to the fixing frame, and the sliding direction of the lifting rod along the fixing frame is perpendicular to the rotation axis of the rotating rod along the fixing frame;

One end of the rotating rod away from the fixing frame is overlapped on the lifting rod so that the lifting rod provides support for the rotating rod. When the rotating rod is overlapped on the lifting rod, the rotating rod and the lifting rod are in a non-parallel state.

By adopting the above technical solution, when working, it is necessary to position the tunnel deepening blasthole, and the angle can be adjusted by rotating the rotating rod along the fixed frame. When rotated to a certain angle, the rotating rod is still in a suspended state, and the position of the rotating rod in the suspended state may be offset. For this reason, the jacking rod can slide along the fixed rod to a state of being in contact with the rotating rod to support the fixed rod. In addition, since the operating angles required for deepening the blasthole are different, when the jacking rod is slid along the fixed frame, the sliding rod can also drive the rotating rod to rotate a larger angle along the fixed frame, so that the sliding rod can be suitable for drilling needs at different angles.

Optionally, it further includes a second sleeve, which is fixedly connected to the rotating rod, and the depth direction of the second sleeve is parallel to the length direction of the rotating rod.

By adopting the above technical solution, when the rotating rod is rotated along the fixed frame to the required angle for operation, the drill rod is passed through the second sleeve and a hole is drilled on the face. The drill rod is positioned by the second sleeve to avoid deviation of the drill rod during the drilling process, thereby ensuring the accuracy of the drilling.

Optionally, the lifting rod is threadedly connected to the fixing frame, so that the lifting rod moves along the rod length direction of the lifting rod when the fixing frame rotates.

By adopting the above technical solution, in order to enable the lifting rod to move up and down along the fixing frame to support the rotating rod, the lifting rod is connected to the fixing frame by a threaded connection. When the lifting rod is rotated on the fixing frame, the lifting rod moves up and down along the fixing frame. Since the threaded connection has a self-locking function, there is no need to set up other additional structures to fix the lifting rod to the fixing frame.

Optionally, it also includes a first sleeve, which is fixedly connected to the fixing frame, and the depth direction of the first sleeve is perpendicular to both the rotation axis of the rotating rod along the fixing frame and the sliding direction of the lifting rod along the fixing frame.

By adopting the above technical solution, when the fixing frame is fixed to the tunnel face, the anchor rod is inserted into the tunnel face after passing through the steel bar and the first sleeve, so as to provide an installation method of the fixing frame and the tunnel face for easy installation.

Optionally, a ball is fixedly connected to the lifting rod, and the ball is slidably connected to the rotating rod. The sliding direction of the ball along the rotating rod is perpendicular to the rotation axis of the rotating rod along the fixed frame.

By adopting the above technical solution, the lifting rod slides on the rotating rod through the ball, which further improves the smoothness of the lifting rod sliding along the rotating rod.

Optionally, the rotating rod is a telescopic rod structure.

By adopting the above technical solution, when judging whether the position of the deepening blasthole to be opened on the tunnel face is accurate, it is only necessary to extend the rotating rod until the end contacts the tunnel face, so as to judge the approximate position where the drill rod after passing through the second sleeve contacts the tunnel face, which makes it convenient for personnel to judge the drilling position of the deepening blasthole.

Optionally, the rotating rod includes a first supporting rod, a third supporting rod and a first elastic member;

The first support rod is rotatably connected to the fixing frame, and the third support rod is slidably connected to an end of the first support rod away from the fixing frame along the length direction of the first support rod;

The first elastic member is fixedly connected between the first support rod and the third support rod, and the first elastic member has a force to drive the third support rod to slide toward a side away from the first support rod under a recoverable deformation.

By adopting the above technical solution, when the length of the rotating rod needs to be adjusted, the third support rod is slid toward the side away from the first support rod. At this time, the first elastic member is stretched. After the third support rod is released, the first elastic member restores its deformation. By setting the first elastic member, the rotating rod can be quickly restored to its initial state.

Optionally, a bubble level is further included, and the fixed frame is fixedly connected to the bubble level. When the bubble indication of the bubble level is horizontal, the rotating rod is in a horizontal state along the rotating axis of the fixed frame.

Optionally, a bubble level is further included, and the fixed frame is fixedly connected to the bubble level. When the bubble indication of the bubble level is horizontal, the rotating rod is in a horizontal state along the rotating axis of the fixed frame.

By adopting the above technical solution, when the fixing frame is fitted to the tunnel face, a bubble level can be used to detect whether the fixing frame is in a horizontal state. When the fixing frame is in a horizontal state, the drilling accuracy of the deepened blasthole will be more accurate.

Optionally, a fixing assembly is further included, wherein the fixing assembly includes a plurality of limiting rods;

The limit rod is perpendicular to the rotation axis of the rotating rod along the fixing frame and also perpendicular to the sliding direction of the lifting rod along the fixing frame. The limit rod is penetrated through the fixing frame along its own rod length direction and is threadedly connected to the fixing frame.

By adopting the above technical solution, when the palm face is uneven, in order to further increase the contact area between the auxiliary positioning device and the palm face, the second limiting rod is rotated to make the second limiting rod fit with the palm face, thereby further increasing the contact area between the auxiliary positioning device and the palm face; since the palm face is uneven, part of the limiting rod is equivalent to overlapping the groove on the palm face, and the palm face provides a certain support for the auxiliary positioning device, which can reduce the displacement between the auxiliary positioning device and the palm face caused by the vibration of the drill rod in the drilling hole.

Optionally, an angle ruler is further included, wherein the angle ruler is fixedly connected to the fixing frame, and during the rotation of the rotating rod along the fixing frame, the rotating rod is located at different dimension marks of the angle ruler.

By adopting the above technical solution, when a person rotates the rotating rod along the fixed frame, the person can clearly observe the rotating angle of the rotating rod through the angle ruler, so that the person can record data.

In summary, the present application includes at least one of the following beneficial technical effects:

1. This application can make the auxiliary positioning device suitable for drilling at more angles through the jacking rod;

2. This application can still increase the contact area between the auxiliary positioning device and the palm face when the palm face is uneven, so as to improve the stability of the auxiliary positioning device;

3. The angle ruler in the present application enables personnel to judge whether the angle of the rotating rod is the required angle by observing the position of the rotating rod on one side of the angle ruler.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of an auxiliary positioning device for tunnel deepening blastholes of the present application;

FIG2 is a schematic diagram of the structure of the positioning assembly of the present application;

FIG3 is an enlarged view of part A of the present application;

FIG4 is a schematic diagram of the structure of the rotating rod and the angle ruler of the present application;

FIG5 is an enlarged view of part B of the present application;

FIG6 is an enlarged view of part C of the present application;

FIG7 is a schematic diagram of the structure of the fixing assembly and the bubble level of the present application;

FIG8 is an enlarged view of part D of the present application;

FIG9 is a side view of the auxiliary positioning device of the present application;

FIG. 10 is a schematic diagram of the structure between the angle ruler and the rotating rod of the present application.

Explanation of the accompanying drawings: 1. fixing frame; 11. fixing rod; 12. rod to be installed; 13. first sleeve; 2. positioning assembly; 21. rotating rod; 211. slide groove; 212. indicator rod; 213. first support rod; 214. second support rod; 215. third support rod; 216. first elastic member; 22. lifting rod; 222. sphere; 23. mounting seat; 231. threaded hole; 24. handle; 3. second sleeve; 4. angle ruler; 41. first through groove; 5. fixing assembly; 51. limit rod; 52. limit plate; 6. bubble level; 7. telescopic rod; 71. first sliding rod; 72. second sliding rod; 73. locking nut; 74. mounting shaft.

Detailed ways

The present application is further described in detail below in conjunction with Figures 1-10. The embodiment of the present application discloses an auxiliary positioning device for tunnel deepening blastholes. Referring to Figure 1, the auxiliary positioning device for tunnel deepening blastholes includes a fixed frame 1, and the fixed frame 1 includes a plurality of fixed rods 11. Specifically, the fixed frame 1 is a frame structure formed by overlapping a plurality of fixed rods 11; preferably, in this embodiment, the fixed rods 11 are provided with 12, and the 12 fixed rods 11 are spliced together to form a cube in the shape of a frame structure.

Referring to Figure 1, when using the auxiliary positioning device to perform the drilling operation of deepening the blasthole, it is necessary to keep one side of the rectangular frame formed by four fixing rods 11 in a vertical state, and the fixing rods 11 on this side need to fit the tunnel face as much as possible. For the sake of convenience of description, this side is named the contact surface, and the fixing rods 11 on the contact surface are named the rods to be installed 12; when in use, while ensuring that the contact surface remains in a vertical state as much as possible, the four fixing rods 11 on the contact surface are fit with the tunnel face, and then, the fixing frame 1 is fixed on the tunnel face.

1 , in order to fix the fixing frame 1 in the tunnel, a first sleeve 13 is fixedly connected to the fixing frame 1. The first sleeve 13 is used for anchor rods or steel bars to pass through. When the anchor rods or steel bars passing through the first sleeve 13 pass through the tunnel face and are inserted into the mountain, the fixing frame 1 can be fixed on the tunnel face. Therefore, the first sleeve 13 is a structure for anchor rods or steel bars to pass through. In some embodiments, the depth of the first sleeve 13 is set perpendicular to the contact surface. In addition, if there is a deviation between the verticality between the depth direction of the first sleeve 13 and the contact surface, it is also within the protection scope of the present application.

1 , in order to ensure the firmness of the connection between the fixing frame 1 and the tunnel, in this embodiment, eight first sleeves 13 are preferably provided, and one first sleeve 13 is provided at each corner of the fixing frame 1 , and the first sleeve 13 is located on the inner side of the fixing frame 1 .

1 and 2 , during operation, after the fixed frame 1 is fixed to the face, it is also necessary to position the angle of the deepening blasthole. For this purpose, the auxiliary positioning device for tunnel deepening blastholes also includes a positioning assembly 2. The positioning assembly 2 includes a rotating rod 21. One end of the rotating rod 21 is rotatably connected to the fixed frame 1, and the other end extends toward the contact surface, so that the angle between the rotating rod 21 and the contact surface can be changed by rotating the rotating rod 21 on the fixed frame 1; the rotating rod 21 is parallel to the contact surface along the rotation axis of the fixed frame 1, and is perpendicular to the barrel depth direction of the first sleeve 13. Therefore, when the auxiliary positioning device is used to position the deepening blasthole angle, the rotating rod 21 can be rotated to the desired angle, and the drill rod can be moved to a position parallel to the rotating rod 21, and the drill rod can be driven into the mountain based on the contrast formed by the rotating rod 21.

1 and 2, in order to further ensure the accuracy of drilling, a second sleeve 3 is fixedly connected to the rotating rod 21, and the second sleeve 3 is arranged parallel to the rod length direction of the rotating rod 21; when in use, the rotating rod 21 is rotated to the required angle for the operation, and then the drill rod is passed through the second sleeve 3 and extended to the palm face for drilling. In order to reduce the problem of deviation of the drill rod during drilling, a plurality of second sleeves 3 can be provided, and the plurality of second sleeves 3 are distributed in sequence along the rod length direction of the rotating rod 21, and the plurality of second sleeves 3 are coaxially arranged.

1 and 2 , after the rotating rod 21 is rotated to the required angle for operation, in order to fix the rotating rod 21 at the required angle, the positioning assembly 2 also includes a lifting rod 22, which is connected to the fixing frame 1, and the lifting rod 22 can move in a direction that is perpendicular to the rotation axis of the rotating rod 21 and parallel to the contact surface. The rotating rod 21 is overlapped on the end of the lifting rod 22, so as to realize the positioning of the rotating rod 21 at different angles through the relative movement of the lifting rod 22 along the fixing frame 1. When the rotating rod 21 is overlapped on the lifting rod 22, the rotating rod 21 and the lifting rod 22 are in a non-parallel state; specifically, when the lifting rod 22 is placed vertically, one end of the rotating rod 21 is in a horizontal direction along the rotation axis of the fixing frame 1, and the other end is overlapped on the top of the lifting rod 22.

Referring to Figures 1 and 2, in addition, in order to achieve the connection between the lifting rod 22 and the fixing frame 1, in some embodiments, a mounting seat 23 is welded on the side of the rod 12 to be installed close to the inner side of the fixing frame 1, and a threaded hole 231 is opened on the mounting seat 23 along the rod length direction of the lifting rod 22. The lifting rod 22 is a screw rod, and the lifting rod 22 is threadedly connected with the threaded hole 231 after passing through the threaded hole 231, so that when the lifting rod 22 is rotated, the height of the top end of the lifting rod 22 can be changed, so that the rotating rod 21 overlapped on the top end of the lifting rod 22 is at different angles; in order to facilitate personnel to rotate the lifting rod 22, a handle 24 is welded on the end of the lifting rod 22 away from the rotating rod 21.

2 and 3 , when the fixed frame 1 is moved, in order to ensure the stability between the rotating rod 21 and the lifting rod 22, a slide groove 211 is opened on the side of the rotating rod 21 close to the fixed frame 1, and the slide groove 211 is a T-shaped groove. The side with a smaller width of the slide groove 211 is arranged close to the outer side of the rotating rod 21. The end of the lifting rod 22 passes through the side with a smaller width of the slide groove 211 and is inserted into the side with a larger width of the slide groove 211. A ball 222 is welded to the end of the lifting rod 22. The ball 222 is located on the side with a larger width of the slide groove 211, and the ball 222 can slide in the slide groove 211 with the lifting rod 22.

4 and 5 , in order to facilitate personnel to observe the rotation angle of the rotating rod 21, the auxiliary positioning device for tunnel deepening blasthole further includes an angle ruler 4, which is fixedly connected to the fixed frame 1. Specifically, the angle ruler 4 and the rotating rod 21 are connected to the same fixed rod 11 of the fixed frame 1. The angle ruler 4 takes the rotation axis of the rotating rod 21 as the central axis, and is distributed with markings on the rotation circumference of the rotating rod 21. An indicating rod 212 is fixedly connected to the rotating rod 21. When the rotating rod 21 rotates along the fixed frame 1, the indicating rod 212 rotates with the rotating rod 21, so that the indicating rod 212 indicates the current angle of the rotating rod 21. In order to further facilitate personnel to observe the indicated angle, a first through groove 41 is opened on the angle ruler 4 along the movement trajectory of the indicating rod 212. The indicating rod 212 is penetrated in the first through groove 41. When the rotating rod 21 is rotated along the fixed frame 1, the indicating rod 212 slides in the first through groove 41 with the rotating rod 21, so that personnel can clearly observe the rotation angle of the rotating rod 21. In this embodiment, the indicating rod 212 is a cylinder.

6, in order to make one end of the drill pipe stably pass through the second sleeve 3 and be fixed to the tunnel face, two second sleeves 3 are provided. The farther the two second sleeves 3 are on the rotating rod 21, the higher the stability of the drill pipe. For this reason, the rotating rod 21 is a telescopic structure, and the distance between the two second sleeves 3 changes with the telescopic movement of the rotating rod 21. At the same time, the telescopic structure can make one end of the rotating rod 21 contact with the tunnel face as much as possible when the rotating rod 21 is rotated to any angle, so that it is convenient for personnel to judge the opening position of the deepening blasthole more conveniently and quickly.

6, in this embodiment, the retractable structure of the rotating rod 21 is preferably as follows: the rotating rod 21 includes a first support rod 213, a second support rod 214, a third support rod 215 and a first elastic member 216, the first support rod 213, the second support rod 214 and the third support rod 215 are arranged in parallel, one end of the first support rod 213 is rotatably connected to the fixing frame 1, and the other end is coaxially welded with the second support rod 214, the other end of the second support rod 214 is penetrated by the third support rod 215, and the third support rod 215 can slide along the second support rod 214, the first elastic member 216 is sleeved on the second support rod 214, and one end of the first elastic member 216 is fixedly connected to the fixing frame 1. It is connected to the end wall of the first support rod 213, and the other end is fixedly connected to the end wall of the third support rod 215. The first elastic member 216 has a force that drives the third support rod 215 to slide toward the side away from the first support rod 213 under recoverable deformation. In this embodiment, the first elastic member 216 is a compression spring. In order to prevent the third support rod 215 from rotating along the second support rod 214, the cross-section of the second support rod 214 is rectangular; a second sleeve 3 is fixedly connected to the first support rod 213, and a second sleeve 3 is fixedly connected to the third support rod 215. For this reason, when the lifting rod 22 is slid along the rotating rod 21, the distance between the two second sleeves 3 can be changed.

7 and 8, in order to fix the fixing frame 1 on the palm face, the auxiliary positioning device further includes a plurality of fixing components 5. Since the palm face is not flat, the four rods 12 to be installed on the contact surface of the fixing frame 1 may not be in a fitted state with the palm face. Therefore, in order to further increase the contact area between the fixing frame 1 and the palm face, the fixing component 5 includes a plurality of limiting rods 51 and limiting plates 52. The limiting rods 51 are penetrated in a direction perpendicular to the contact surface and are threadedly connected to the rods 12 to be installed. Each rod 12 to be installed has a A plurality of limit rods 51 are connected, and the plurality of limit rods 51 on each rod 12 to be installed are spaced in sequence along the rod length direction of the rod 12 to be installed; a limit plate 52 is connected to each limit rod 51, and the limit plate 52 is located on the side of the limit rod 51 away from the fixed frame 1, and the cross-sectional area of the limit plate 52 along the side parallel to the contact surface is larger than the cross-sectional area of the limit rod 51 along the side parallel to the contact surface. Therefore, when the limit rod 51 is rotated, the limit plate 52 can be moved toward the side of the palm face until the limit plate 52 contacts the palm face.

7 , in addition, in order to facilitate personnel to determine whether the contact surface is vertical, a bubble level 6 may be fixedly connected to the fixing rod 11 , and when the bubble of the bubble level 6 indicates horizontal, the contact surface is in a vertical state.

9 and 10, in the present embodiment, the connection relationship between the rotating rod 21 and the fixed rod 11 is a direct rotational connection. In some other embodiments, the connection relationship between the rotating rod 21 and the fixed rod 11 can also be an indirect rotational connection. Specifically, a telescopic rod 7 is further provided between the connection between the fixed rod 11 and the rotating rod 12. The telescopic rod 7 includes a first sliding rod 71, a second sliding rod 72 and a locking nut 73. The first sliding rod 71 is hollow, one end of the first sliding rod 71 is welded to the fixed rod 11, and one end of the second sliding rod 72 is located in the first sliding rod 71 and can slide in the first sliding rod 71 along the rod length direction parallel to the jacking rod 22; the locking nut The nut 73 is penetrated through the rod peripheral wall of the first sliding rod 71 and is threadedly connected to the first sliding rod 71. One end of the locking nut 73 passes through the first sliding rod 71 and is tightened against the second sliding rod 72 to fix the first sliding rod 71 and the second sliding rod 72. In order to install the rotating rod 21 and the angle ruler 4, a mounting shaft 74 is welded at the end of the second sliding rod 72 away from the first sliding rod 71. The mounting shaft 74 is parallel to the rotating rod 11 and is arranged along the rotation axis of the fixing frame 1. The rotating rod 21 is rotatably connected to the mounting shaft 74, and the angle ruler 4 is welded and fixed to the mounting shaft 74. That is, the rotating rod 21 and the angle ruler 4 are indirectly rotatably connected to the fixing frame 1 through the telescopic rod 7 and the mounting shaft 74.

The implementation principle of an auxiliary positioning device for tunnel deepening blastholes in the embodiment of the present application is as follows:

During operation, the fixing frame 1 needs to be fixed to the tunnel face first. During fixing, the anchor rod or the steel bar is inserted into the tunnel face after passing through the first sleeve 13 to fix the fixing frame 1 on the tunnel face.

Next, the angle of the rotating rod 21 is adjusted. During the adjustment process, the handle 24 is turned so that the lifting rod 22 pulls the rotating rod 21 along the fixing frame 1 to the desired angle, and the rotating rod 21 is fixed. After the angle is determined, the personnel pass the drill rod through the second sleeve 3 and drill a hole on the face. When adjusting the angle of the rotating rod 21, the position of the indicator rod 212 on the angle ruler 4 can be observed to determine whether the rotation angle of the rotating rod 21 meets the expected requirement.

After fixing the fixing frame 1 to the face, the limiting rod 51 is rotated to make the limiting plate 52 contact the face, so as to increase the contact area between the entire auxiliary positioning device and the face and improve the stability of the entire auxiliary positioning device on the face.

In addition, if the angle of the rotating rod 21 is correct but there is a height difference, the locking nut 73 is loosened to adjust the height of the rotating rod 21. After the rotating rod 21 is adjusted to the required height, the height difference of the rotating rod 21 can be eliminated.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A auxiliary positioning device for tunnel deepens big gun hole, its characterized in that: comprises a fixing frame (1) and a positioning component (2);

The positioning assembly (2) comprises a rotating rod (21) and a jacking rod (22);

The rotating rod (21) is rotationally connected to the fixing frame (1);

The jacking rod (22) is connected to the fixing frame (1) in a sliding manner, and the sliding direction of the jacking rod (22) along the fixing frame (1) is perpendicular to the rotating axis of the rotating rod (21) along the fixing frame (1);

One end of the rotating rod (21) far away from the fixing frame (1) is lapped on the jacking rod (22) so that the jacking rod (22) provides support for the rotating rod (21), and when the rotating rod (21) is lapped on the jacking rod (22), the rotating rod (21) and the jacking rod (22) are in a non-parallel state.

2. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 1, wherein: the novel rotary rod further comprises a second sleeve (3), wherein the second sleeve (3) is fixedly connected to the rotary rod (21), and the barrel depth direction of the second sleeve (3) is parallel to the rod length direction of the rotary rod (21).

3. An auxiliary positioning device for deepening a blast hole in a tunnel according to claim 2, wherein: the jacking rod (22) is in threaded connection with the fixing frame (1), so that the jacking rod (22) moves along the rod length direction of the jacking rod (22) when rotating along the fixing frame (1).

4. An auxiliary positioning device for a deepened blast hole of a tunnel according to claim 3, wherein: the lifting device is characterized by further comprising a first sleeve (13), wherein the first sleeve (13) is fixedly connected to the fixing frame (1), and the cylinder depth direction of the first sleeve (13) is perpendicular to the rotation axis of the rotating rod (21) along the fixing frame (1) and perpendicular to the sliding direction of the lifting rod (22) along the fixing frame (1).

5. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 4, wherein: the lifting rod (22) is fixedly connected with a ball body (222), the ball body (222) is connected with the rotating rod (21) in a sliding mode, and the ball body (222) is perpendicular to the rotating axis of the rotating rod (21) along the rotating axis of the fixing frame (1) along the sliding direction of the rotating rod (21).

6. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 5, wherein: the rotating rod (21) is of a telescopic rod-shaped structure.

7. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 6, wherein: the rotating rod (21) comprises a first supporting rod (213), a third supporting rod (215) and a first elastic piece (216);

The first support rod (213) is rotatably connected to the fixing frame (1), and the third support rod (215) is slidably connected to one end, far away from the fixing frame (1), of the first support rod (213) along the rod length direction of the first support rod (213);

the first elastic piece (216) is fixedly connected between the first supporting rod (213) and the third supporting rod (215), and the first elastic piece (216) has a force for driving the third supporting rod (215) to slide towards one side far away from the first supporting rod (213) under recoverable deformation.

8. An auxiliary positioning device for deepening a blast hole in a tunnel according to any one of claims 1 to 7, wherein: the bubble level meter is characterized by further comprising a bubble level meter (6), wherein the bubble level meter (6) is fixedly connected to the fixing frame (1), and when the bubble indication of the bubble level meter (6) is horizontal, the rotating rod (21) is in a horizontal state along the rotating axis of the fixing frame (1).

9. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 8, wherein: the device further comprises a fixing assembly (5), wherein the fixing assembly (5) comprises a plurality of limiting rods (51);

The limiting rod (51) is perpendicular to the rotating shaft (21) and the lifting rod (22) along the sliding direction of the fixing frame (1), the limiting rod (51) penetrates through the fixing frame (1) along the length direction of the rod, and is connected with the fixing frame (1) in a threaded mode.

10. The auxiliary positioning device for deepening a blast hole of a tunnel according to claim 9, wherein: the angle gauge is characterized by further comprising an angle gauge (4), wherein the angle gauge (4) is fixedly connected to the fixing frame (1), the rotating rod (21) is located at different dimension marking positions of the angle gauge (4) in the rotating process of the fixing frame (1).