Rapid positioning device for tunnel smooth surface pre-blasting peripheral holes

Abstract

The invention relates to the field of positioning. The invention discloses a quick positioning device for tunnel smooth surface pre-blasting peripheral holes, which comprises a movable sweeping board, the top surface of the movable sweeping board is fixedly connected with a support plate frame, the front surface of the support plate frame is provided with a deflection mechanism, and the deflection mechanism is provided with an angle regulation and control mechanism. The problems that the position of a positioning plate needs to be adjusted frequently, and the positioning efficiency is low are solved. The device is composed of a deflection mechanism, an angle regulation and control mechanism and a reset mechanism. According to the rapid positioning device for the tunnel smooth surface pre-blasting peripheral holes, a contraction air cylinder stretches out and draws back in a reciprocating mode, then a second fixed cone pulley and a second movable cone pulley are driven to rotate clockwise, an inverted-L-shaped shifting plate and a positioning plate on a rotating roller are driven to rotate clockwise by a specified angle at the same time and then stop rotating, and positioning of the tunnel peripheral holes by the positioning plate is completed; and the contraction cylinder contracts and reciprocates to drive the positioning plate to clockwise rotate at equal angles, so that the positioning efficiency of the positioning plate on the peripheral holes of the tunnel is ensured.

Description

Technical Field

[0001] The invention relates to the field of positioning, in particular to a rapid positioning device for peripheral holes of smooth surface pre-blasting of a tunnel. Background Art

[0002] Smooth blasting is a controlled blasting technology that keeps the new wall surface smooth and not obviously damaged. Its characteristics are to drill a row of smooth blasting holes on the designed excavation contour line with a hole spacing that matches the minimum resistance line, and use uncoupled charges or other special charge structures. After the main excavation blasting, the charges in the smooth blasting holes are detonated at the same time, thus forming a smooth excavation surface that runs through the smooth blasting holes. The rapid positioning device for peripheral holes on the market currently has insufficient measurement accuracy due to the unevenness of the tunnel inner wall.

[0003] The existing patent (publication number: CN110985006B) discloses a rapid positioning device for peripheral holes of tunnel smooth surface blasting. The cross-sectional shape of the long plate is set to an arc shape, which can effectively engage the long plate with the inside of the tunnel. The two first fixing plates are added to effectively increase the stability of the first positioning plate. The cross-sectional shape of the positioning hole is set to a square, which is easy to operate when drilling.

[0004] In the process of realizing the present invention, the inventors found that at least the following problems exist in the prior art and have not been solved: when the device is positioning the tunnel light surface, the position of the positioning plate needs to be adjusted frequently, resulting in low efficiency of the device in positioning the peripheral holes of the tunnel light surface. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid positioning device for tunnel smooth surface pre-blasting peripheral holes, so as to solve the problem of the need to frequently adjust the position of the positioning plate and the low positioning efficiency proposed in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a rapid positioning device for tunnel smooth surface pre-blasting peripheral holes, comprising a moving vehicle plate, the top surface of the moving vehicle plate is fixedly connected to a support plate frame, the front surface of the support plate frame is provided with a deflection mechanism, the deflection mechanism is provided with an angle control mechanism, and the angle control mechanism is installed on the top surface of the moving vehicle plate; The angle control mechanism is provided with a positioning plate, which controls the angle of a single deflection of the deflection mechanism through the angle control mechanism, thereby driving the positioning plate to deflect at the same angle to position the peripheral holes of the tunnel surface; The deflection mechanism includes a retracting cylinder hinged on the front side of the support plate frame, the top end of the retracting cylinder is fixedly connected to a first spring telescopic rod, the upper end of the first spring telescopic rod is fixedly connected to a second spring telescopic rod, and the front end of the second spring telescopic rod is semicircular.

[0006] Preferably, the deflection mechanism further comprises a rotating disk rotatably connected to the top surface of the moving vehicle plate, the rotating disk is provided with an arc guide groove, and one end of the second spring telescopic rod is slidably arranged in the arc guide groove, and two return spring telescopic rods are hinged on the side of the rotating disk facing the supporting plate frame, and the lower ends of the two return spring telescopic rods are hinged on the top surface of the moving vehicle plate; A spring expansion plate is hinged on the front of the rotating disk, the lower end of the spring expansion plate is rounded, the lower end of the spring expansion plate is abutted against an arc-shaped clamping plate, and the arc-shaped clamping plate is rotatably connected to the front of the rotating disk; One end of the arc-shaped clamping plate is in contact with an inner gear ring barrel, and a fixing frame is sleeved on the outer wall of the inner gear ring barrel. The fixing frame is fixedly installed on the top surface of the moving vehicle plate.

[0007] Preferably, the angle control mechanism comprises a first spline transmission rod penetrating the inner gear ring barrel, a first fixed bevel wheel is fixedly sleeved on the middle part of the side surface of the first spline transmission rod, a first movable bevel wheel is slidably sleeved on the front end of the side surface of the first spline transmission rod, a nut is threadedly connected on the front end of the side surface of the first spline transmission rod, and the rear end surface of the nut abuts against the first movable bevel wheel; The angle control mechanism also includes a rotating roller rotatably connected to the top surface of the fixed frame, and an inverted L-shaped dial plate is fixedly connected to the side of the rotating roller, the upper end of the inverted L-shaped dial plate is fixedly connected to the positioning plate, and two inclined surfaces are provided on the bottom surface of the inverted L-shaped dial plate cross plate; A second spline transmission rod is passed through the front end of the rotating roller, a second movable cone wheel is slidably sleeved on the rear end of the side of the second spline transmission rod, and a third spring telescopic rod is fixedly connected between the rear end of the second movable cone wheel and the front end of the rotating roller; A second fixed cone wheel is fixedly sleeved on the front end of the side surface of the second spline transmission rod, and the second fixed cone wheel, the second movable cone wheel and the first movable cone wheel, the first fixed cone wheel are connected through a transmission steel belt.

[0008] Preferably, a reset mechanism is fixedly connected to the support plate frame, and the reset mechanism includes a cross bar that slides on the front of the support plate frame, and both ends of the cross bar are inclined surfaces, and two fourth spring telescopic rods are hinged on both sides of the upper and lower sides of the cross bar, and one end of the fourth spring telescopic rod away from the cross bar is hinged on the front of the support plate frame; An L-shaped rod is fixedly connected to the bottom surface of the crossbar, an H-shaped rod is clamped on the L-shaped rod, the H-shaped rod is rotatably connected to the front surface of the support plate frame, and the lower end of the H-shaped rod is clamped on the second spring telescopic rod; Two fixing blocks are also fixedly connected to the front side of the support plate frame, and the two fixing blocks are respectively distributed on the left and right sides of the L-shaped rod, and the fixing block on the right side abuts against the L-shaped rod.

[0009] Preferably, the positioning plate is provided with a telescopic sleeve, and the telescopic sleeve is threadedly connected with a screw rod.

[0010] Preferably, the front ends of the first spline transmission rod and the second spline transmission rod are rotatably connected with a fixing plate, and the fixing plate is fixed on the top surface of the supporting plate frame.

[0011] Preferably, the movable vehicle plate includes a box body, and the box body is fixedly connected to the bottom surface of the supporting plate frame, a motor is fixedly connected to the bottom surface of the box body, one end of the motor rotating shaft extends to the interior of the box body and is fixedly sleeved with a rotating gear, two tooth plates are meshed on the rotating gear, and the two tooth plates are slidably arranged in the box body.

[0012] Preferably, lifting legs are fixedly connected to the bottom surface of the movable vehicle plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the reciprocating extension and retraction of the contraction cylinder drives the second fixed cone wheel and the second movable cone wheel to rotate clockwise, driving the inverted L-shaped dial plate and the positioning plate on the rotating roller to rotate clockwise at a specified angle and then stop, thereby completing the positioning of the positioning plate on the peripheral holes of the tunnel; the contraction cylinder contracts and reciprocates in this way, driving the positioning plate to rotate clockwise at the same angle, thereby ensuring the efficiency of the positioning plate in positioning the peripheral holes of the tunnel.

[0014] In the present invention, the nut is rotated to move backward on the first spline transmission rod, thereby shortening the distance between the first movable cone wheel and the first fixed cone wheel, and then squeezing the transmission steel belt, so that the second movable cone wheel on the upper side squeezed by the transmission steel belt moves backward on the second spline transmission rod and pushes the third spring telescopic rod to continue to compress, thereby changing the transmission ratio between the first movable cone wheel, the first fixed cone wheel and the second fixed cone wheel, and the second movable cone wheel, and adjusting the angle of a single rotation of the positioning plate, so that the user can set a corresponding number of holes on the light surface of the tunnel according to specific needs.

[0015] In the present invention, after the positioning plate rotates 180 degrees, the inverted L-shaped shift plate squeezes the inclined surface of the right end of the cross bar, driving the L-shaped rod at the lower end of the cross bar to move left and be squeezed onto the left fixed block, and the front end of the second spring telescopic rod is in the process of clockwise deflection, squeezing the spring telescopic plate to deflect counterclockwise and slide on the inner side of the arc clamping plate. When the lower end of the spring telescopic plate slides to the right side of the middle part of the arc clamping plate, the arc clamping plate is deflected clockwise under the action of the resetting force of the spring telescopic plate, so that the left end of the arc clamping plate abuts against the inner wall of the inner gear ring barrel; then when the contraction cylinder continues to contract and reset, the arc clamping plate drives the inner gear ring barrel to rotate counterclockwise, and the cooperation of the first spline transmission rod, the transmission steel belt and the second spline transmission rod drive the inverted L-shaped shift plate and the positioning plate on the rotating roller to rotate counterclockwise at the same time, thereby realizing the conversion of the deflection direction of the positioning plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the movable vehicle plate and the angle adjustment mechanism of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the second spring telescopic rod and the rotating disk of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the support plate frame, the cross bar and the fourth spring telescopic rod of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the first fixed cone wheel, the first movable cone wheel and the nut of the present invention; Figure 6 It is a front cross-sectional view of the internal gear ring barrel of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the spring telescopic plate and the arc-shaped clamping plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the second movable cone wheel and the third spring telescopic rod of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the inverted L-shaped shifting plate and the transmission steel belt of the present invention; Fig.10 It is a three-dimensional structural cross-sectional view of the box body of the present invention.

[0017] In the figure: 1, moving car plate; 11, box; 12, motor; 13, rotating gear; 14, tooth plate; 15, lifting leg; 2, support plate frame; 3, deflection mechanism; 31, contraction cylinder; 32, first spring telescopic rod; 33, second spring telescopic rod; 34, rotating plate; 35, arc guide groove; 36, spring telescopic plate; 37, arc clamping plate; 38, inner gear ring barrel; 39, fixed frame; 310, reset spring telescopic rod; 4, angle control mechanism; 41, first spline transmission Moving rod; 42, first fixed cone wheel; 43, first movable cone wheel; 44, nut; 45, rotating roller; 46, second spline transmission rod; 47, second movable cone wheel; 48, third spring telescopic rod; 49, second fixed cone wheel; 410, inverted L-shaped dial plate; 411, transmission steel belt; 5, positioning plate; 6, reset mechanism; 61, cross bar; 62, fourth spring telescopic rod; 63, L-shaped rod; 64, H-shaped rod; 65, fixed block; 7, telescopic sleeve; 8, screw rod; 9, fixed plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 10 The present invention provides a technical solution: a rapid positioning device for tunnel smooth surface pre-blasting peripheral holes, comprising a mobile vehicle plate 1, a support plate frame 2 is fixedly connected to the top surface of the mobile vehicle plate 1, a deflection mechanism 3 is arranged on the front surface of the support plate frame 2, an angle control mechanism 4 is arranged on the deflection mechanism 3, and the angle control mechanism 4 is installed on the top surface of the mobile vehicle plate 1; A positioning plate 5 is installed on the angle control mechanism 4, and the angle of a single deflection of the deflection mechanism 3 is controlled by the angle control mechanism 4, thereby driving the positioning plate 5 to deflect at the same angle to position the peripheral holes of the tunnel surface; The deflection mechanism 3 includes a retracting cylinder 31 hinged on the front side of the support plate frame 2, the top end of the retracting cylinder 31 is fixedly connected to a first spring telescopic rod 32, the upper end of the first spring telescopic rod 32 is fixedly connected to a second spring telescopic rod 33, and the front end of the second spring telescopic rod 33 is semicircular.

[0020] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the deflection mechanism 3 also includes a rotating disk 34 rotatably connected to the top surface of the moving vehicle plate 1. When the contraction cylinder 31 contracts, the first spring telescopic rod 32 is stretched and then drives the rotating disk 34 to rotate; an arc guide groove 35 is opened on the rotating disk 34, and one end of the second spring telescopic rod 33 is slidably set in the arc guide groove 35. Two return spring telescopic rods 310 are hinged on the side of the rotating disk 34 facing the supporting plate frame 2, and the lower ends of the two return spring telescopic rods 310 are hinged on the top surface of the moving vehicle plate 1; A spring expansion plate 36 is hinged on the front of the rotating disk 34. The lower end of the spring expansion plate 36 is rounded. The lower end of the spring expansion plate 36 abuts against an arc-shaped clamping plate 37, and the arc-shaped clamping plate 37 is rotatably connected to the front of the rotating disk 34. One end of the arc-shaped clamping plate 37 abuts against an inner gear ring barrel 38, and a fixing frame 39 is sleeved on the outer wall of the inner gear ring barrel 38, and the fixing frame 39 is fixedly mounted on the top surface of the moving vehicle plate 1. The fixing frame 39 ensures the stability of the inner gear ring barrel 38 when rotating.

[0021] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9As shown, the angle control mechanism 4 includes a first spline transmission rod 41 that passes through the inner gear ring barrel 38, a first fixed cone wheel 42 is fixedly sleeved on the middle part of the side surface of the first spline transmission rod 41, a first movable cone wheel 43 is slidably sleeved on the front end of the side surface of the first spline transmission rod 41, a nut 44 is threadedly connected on the front end of the side surface of the first spline transmission rod 41, and the rear end surface of the nut 44 abuts against the first movable cone wheel 43; The angle control mechanism 4 also includes a rotating roller 45 rotatably connected to the top surface of the fixing frame 39, and an inverted L-shaped dial plate 410 is fixedly connected to the side of the rotating roller 45, the upper end of the inverted L-shaped dial plate 410 is fixedly connected to the positioning plate 5, and two inclined surfaces are provided on the bottom surface of the horizontal plate of the inverted L-shaped dial plate 410; A second spline transmission rod 46 is passed through the front end of the rotating roller 45, and a second movable cone wheel 47 is slidably sleeved on the rear end of the side of the second spline transmission rod 46. A third spring telescopic rod 48 is fixedly connected between the rear end of the second movable cone wheel 47 and the front end of the rotating roller 45, and the third spring telescopic rod 48 is in a stressed and compressed state; A second fixed cone wheel 49 is fixedly sleeved on the front end of the side surface of the second spline transmission rod 46 , and the second fixed cone wheel 49 , the second movable cone wheel 47 , the first movable cone wheel 43 , and the first fixed cone wheel 42 are connected through a transmission steel belt 411 .

[0022] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig. 9 As shown, a reset mechanism 6 is fixedly connected to the support plate frame 2, and the reset mechanism 6 includes a cross bar 61 that slides on the front of the support plate frame 2, and both ends of the cross bar 61 are inclined surfaces, and two fourth spring telescopic rods 62 are hinged on both sides of the upper and lower sides of the cross bar 61, and one end of the fourth spring telescopic rod 62 away from the cross bar 61 is hinged on the front of the support plate frame 2; An L-shaped rod 63 is fixedly connected to the bottom surface of the crossbar 61, an H-shaped rod 64 is clamped on the L-shaped rod 63, the H-shaped rod 64 is rotatably connected to the front surface of the support plate frame 2, and the lower end of the H-shaped rod 64 is clamped on the second spring telescopic rod 33; Two fixing blocks 65 are also fixedly connected to the front side of the support plate frame 2 , and the two fixing blocks 65 are respectively distributed on the left and right sides of the L-shaped rod 63 , and the right fixing block 65 abuts against the L-shaped rod 63 .

[0023] In this embodiment, Figure 1 , Figure 2 As shown, a telescopic sleeve 7 is sleeved on the positioning plate 5, and a screw 8 is threadedly connected to the telescopic sleeve 7. The telescopic sleeve 7 slides on the positioning plate 5 to adjust the overall length of the positioning plate 5 and the telescopic sleeve 7, and the adjusted telescopic sleeve 7 is fixed by the screw 8.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig. 9 As shown, the front ends of the first spline transmission rod 41 and the second spline transmission rod 46 are rotatably connected with a fixing plate 9, and the fixing plate 9 is fixed on the top surface of the support plate frame 2, so that the stability of the first spline transmission rod 41 and the second spline transmission rod 46 during rotation is increased by the fixing plate 9.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 6 , Figure 8 , Fig.10 As shown, the mobile vehicle plate 1 includes a box body 11, which is fixedly connected to the bottom surface of the supporting plate frame 2. A motor 12 is fixedly connected to the bottom surface of the box body 11. One end of the rotating shaft of the motor 12 extends to the interior of the box body 11 and is fixedly sleeved with a rotating gear 13. Two tooth plates 14 are meshed on the rotating gear 13, and the two tooth plates 14 are slidably arranged in the box body 11.

[0026] In this embodiment, Figure 1 , Figure 2 , Fig.10 As shown, a lifting leg 15 is fixedly connected to the bottom surface of the moving vehicle plate 1 to adjust the overall height of the moving vehicle plate 1 .

[0027] The use method and advantages of the present invention: The use method of the rapid positioning device for tunnel smooth surface pre-blasting peripheral holes, the working process is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown: by moving the moving vehicle plate 1 into the tunnel, then starting the motor 12 to drive the rotating gear 13 to rotate counterclockwise, the two tooth plates 14 are pushed out from the inside of the box 11, so that the opposite sides of the two tooth plates 14 are respectively abutted on the left and right sides of the tunnel, ensuring that the motor 12 is located in the middle of the tunnel in the horizontal direction, and then adjusting the length of the telescopic sleeve 7 and fixing it, and then adjusting the lifting legs 15 to make the box 11 at the required height; Then, the number of holes required to be punched in the inner wall of the tunnel is calculated according to the demand, and then the nut 44 is rotated to make it move backward on the first spline transmission rod 41, shortening the distance between the first movable cone wheel 43 and the first fixed cone wheel 42, and then squeezing the transmission steel belt 411, so that the transmission steel belt 411 squeezes the second movable cone wheel 47 on the upper side and moves backward on the second spline transmission rod 46 and pushes the third spring telescopic rod 48 to continue to compress, thereby changing the transmission ratio between the first movable cone wheel 43, the first fixed cone wheel 42 and the second fixed cone wheel 49, the second movable cone wheel 47; Then, the first spring telescopic rod 32 is contracted by contracting the contraction cylinder 31, thereby driving the rotating disk 34 to rotate counterclockwise, and the rotation of the rotating disk 34 drives the arc-shaped clamping plate 37 thereon to deflect counterclockwise and slide on the teeth of the inner wall of the inner gear ring barrel 38. Then, when the contraction cylinder 31 is extended and reset, the restoring force of the two reset spring telescopic rods 310 drives the rotating disk 34 to rotate clockwise, so that the right end of the arc-shaped clamping plate 37 abuts against the teeth of the inner wall of the inner gear ring barrel 38 and pushes the inner gear ring barrel 38 to rotate clockwise, driving the first movable cone wheel 43 and the first fixed cone wheel 42 on the first spline transmission rod 41 to rotate clockwise at the same time, and cooperating with the transmission steel belt 411 to drive the second fixed cone wheel 49 and the second movable cone wheel 47 to rotate clockwise, driving the inverted L-shaped dial plate 410 and the positioning plate 5 on the rotating roller 45 to rotate clockwise at the same time after a specified angle and then stop, completing the positioning of the positioning plate 5 on the peripheral hole of the tunnel, so that subsequent users can drill holes in this area; The retracting cylinder 31 retracts and reciprocates in this way, driving the positioning plate 5 to rotate clockwise at equal angles, and when the positioning plate 5 rotates 180 degrees, the end with the inclined surface of the inverted L-shaped plate 410 rotates to squeeze the inclined surface of the right end of the cross bar 61, so that the cross bar 61 moves leftward and pushes the fourth spring telescopic rod 62 to compress and deflect, thereby driving the L-shaped rod 63 at the lower end of the cross bar 61 to move leftward and be squeezed onto the left fixed block 65, and in the process of the L-shaped rod 63 moving leftward, the H-shaped rod 64 is driven to deflect counterclockwise, driving the second spring telescopic rod 33 to slide clockwise in the arc guide groove 35, and driving the retracting cylinder 31 to deflect clockwise; In the process of clockwise deflection, the front end of the second spring telescopic rod 33 squeezes the spring telescopic plate 36 to deflect counterclockwise and slide on the inner side of the arc-shaped clamping plate 37. When the lower end of the spring telescopic plate 36 slides to the right side of the middle of the arc-shaped clamping plate 37, the arc-shaped clamping plate 37 deflects clockwise under the action of the restoring force of the spring telescopic plate 36, so that the left end of the arc-shaped clamping plate 37 abuts against the inner wall of the inner gear ring barrel 38. When the left end of the arc-shaped clamping plate 37 abuts against the inner wall of the inner gear ring barrel 38, the arc-shaped clamping plate 37 can no longer swing counterclockwise. At this time, the hemispherical surface at the front end of the second spring telescopic rod 33 is contracted by the resistance of the spring telescopic plate 36 and then moves to the right side of the spring telescopic plate 36. Then, when the contraction cylinder 31 continues to contract, the rotating disk 34 is pulled to deflect clockwise, driving the left end of the arc-shaped clamping plate 37 to slide on the inner wall of the inner gear ring barrel 38. When the rotating disk 34 cooperates with the arc-shaped clamping plate 37 to drive the inner gear ring barrel 38 to rotate counterclockwise under the reset force of the two reset spring telescopic rods 310, the inverted L-shaped dial plate 410 and the positioning plate 5 on the rotating roller 45 are driven to rotate counterclockwise at the same time through the cooperation of the first spline transmission rod 41, the transmission steel belt 411 and the second spline transmission rod 46, thereby realizing the conversion of the deflection direction of the positioning plate 5.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rapid positioning device for tunnel smooth surface pre-blasting peripheral holes, comprising a moving vehicle plate (1), characterized in that: The top surface of the movable vehicle plate (1) is fixedly connected to a support plate frame (2); a deflection mechanism (3) is provided on the front surface of the support plate frame (2); an angle control mechanism (4) is provided on the deflection mechanism (3); and the angle control mechanism (4) is mounted on the top surface of the movable vehicle plate (1); A positioning plate (5) is installed on the angle control mechanism (4), and the angle of a single deflection of the deflection mechanism (3) is controlled by the angle control mechanism (4), thereby driving the positioning plate (5) to deflect at an equal angle, thereby positioning the peripheral holes of the tunnel smooth surface; The deflection mechanism (3) comprises a retractable cylinder (31) hinged on the front face of the support plate frame (2); the top end of the retractable cylinder (31) is fixedly connected to a first spring telescopic rod (32); the upper end of the first spring telescopic rod (32) is fixedly connected to a second spring telescopic rod (33); and the front end of the second spring telescopic rod (33) is semicircular.

2. A rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 1, characterized in that: The deflection mechanism (3) further comprises a rotating disk (34) rotatably connected to the top surface of the moving vehicle plate (1), the rotating disk (34) being provided with an arc-shaped guide groove (35), and one end of a second spring telescopic rod (33) being slidably disposed in the arc-shaped guide groove (35), and two return spring telescopic rods (310) being hingedly connected to a side of the rotating disk (34) facing the support plate frame (2), and the lower ends of the two return spring telescopic rods (310) are both hingedly connected to the top surface of the moving vehicle plate (1); A spring expansion plate (36) is hingedly connected to the front surface of the rotating disk (34); the lower end of the spring expansion plate (36) is rounded; the lower end of the spring expansion plate (36) abuts against an arc-shaped clamping plate (37), and the arc-shaped clamping plate (37) is rotatably connected to the front surface of the rotating disk (34); One end of the arc-shaped clamping plate (37) is in contact with an inner gear ring barrel (38), and a fixing frame (39) is sleeved on the outer wall of the inner gear ring barrel (38), and the fixing frame (39) is fixedly mounted on the top surface of the moving vehicle plate (1).

3. A rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 2, characterized in that: The angle control mechanism (4) comprises a first spline transmission rod (41) penetrating the inner gear ring barrel (38); a first fixed cone wheel (42) is fixedly sleeved on the middle part of the side surface of the first spline transmission rod (41); a first movable cone wheel (43) is slidably sleeved on the front end of the side surface of the first spline transmission rod (41); a nut (44) is threadedly connected on the front end of the side surface of the first spline transmission rod (41); and a rear end surface of the nut (44) abuts against the first movable cone wheel (43); The angle control mechanism (4) further comprises a rotating roller (45) rotatably connected to the top surface of the fixed frame (39), and an inverted L-shaped shifting plate (410) is fixedly connected to the side surface of the rotating roller (45), the upper end of the inverted L-shaped shifting plate (410) is fixedly connected to the positioning plate (5), and two inclined surfaces are provided on the bottom surface of the horizontal plate of the inverted L-shaped shifting plate (410); A second spline transmission rod (46) passes through the front end of the rotating roller (45); a second movable cone wheel (47) is slidably sleeved on the rear end of the side of the second spline transmission rod (46); a third spring telescopic rod (48) is fixedly connected between the rear end of the second movable cone wheel (47) and the front end of the rotating roller (45); A second fixed cone wheel (49) is fixedly sleeved on the front end of the side surface of the second spline transmission rod (46), and the second fixed cone wheel (49), the second movable cone wheel (47) and the first movable cone wheel (43) and the first fixed cone wheel (42) are transmission-connected via a transmission steel belt (411).

4. A rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 2, characterized in that: A reset mechanism (6) is fixedly connected to the support plate frame (2), the reset mechanism (6) comprising a cross bar (61) sliding on the front surface of the support plate frame (2), and both ends of the cross bar (61) are inclined surfaces, and two fourth spring telescopic rods (62) are hingedly connected to the upper and lower sides of the cross bar (61), and one end of the fourth spring telescopic rod (62) away from the cross bar (61) is hingedly connected to the front surface of the support plate frame (2); An L-shaped rod (63) is fixedly connected to the bottom surface of the crossbar (61), an H-shaped rod (64) is clamped on the L-shaped rod (63), the H-shaped rod (64) is rotatably connected to the front surface of the support plate frame (2), and the lower end of the H-shaped rod (64) is clamped on the second spring telescopic rod (33); Two fixing blocks (65) are also fixedly connected to the front surface of the support plate frame (2), and the two fixing blocks (65) are respectively distributed on the left and right sides of the L-shaped rod (63), and the fixing block (65) on the right side abuts against the L-shaped rod (63).

5. The rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 1, characterized in that: The positioning plate (5) is sleeved with a telescopic sleeve (7), and a screw rod (8) is threadedly connected to the telescopic sleeve (7).

6. A rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 3, characterized in that: The front ends of the first spline transmission rod (41) and the second spline transmission rod (46) are rotatably connected to a fixing plate (9), and the fixing plate (9) is fixed on the top surface of the support plate frame (2).

7. The rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 1, characterized in that: The movable vehicle plate (1) comprises a box body (11), and the box body (11) is fixedly connected to the bottom surface of the supporting plate frame (2), and a motor (12) is fixedly connected to the bottom surface of the box body (11), one end of the rotating shaft of the motor (12) extends into the interior of the box body (11) and is fixedly sleeved with a rotating gear (13), and the rotating gear (13) is meshed with two tooth plates (14), and the two tooth plates (14) are slidably arranged in the box body (11).

8. The rapid positioning device for tunnel smooth surface pre-blasting peripheral holes according to claim 1, characterized in that: The bottom surface of the movable vehicle plate (1) is also fixedly connected with a lifting support leg (15).

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