A rock drilling trolley drill arm tightening and positioning device

Abstract

The present invention proposes a rock drilling rig drill arm tightening and positioning device, which specifically includes a drill rod, a positioning mechanism, an angle adjustment mechanism, an amplitude adjustment mechanism, a slide seat, an amplitude modulation slider, a slider traction mechanism and a tightening mechanism. The positioning mechanism plays a role in positioning, supporting and reducing the movement of the device; the slider traction mechanism pulls the amplitude modulation slider to move and can control multiple groups of amplitude adjustment mechanisms to swing synchronously, and adjust the amplitude of the tightening mechanism; the tightening mechanism tightens the face by applying a pre-tightening force, and each group of angle adjustment mechanisms can individually adjust the angle of the tightening mechanism in the phase; the amplitude adjustment mechanism and the angle adjustment mechanism work together to enable multiple groups of tightening mechanisms to find a suitable position to tighten the face while avoiding interference, so as to facilitate drilling of the drill rod. The present invention can improve the positioning accuracy of the drill arm through the shock-absorbing pad of the tightening mechanism, the rubber layer of the positioning mechanism, and the tightening mechanism with excellent circumferential stability, and solve the problems of slow drilling speed, large movement and low accuracy of the drill rod in the early stage of drilling.

Description

Technical Field

[0001] The invention relates to the technical field of rock drilling trolleys, and in particular to a jacking and positioning device for a drill arm of a rock drilling trolley. Background Art

[0002] A drilling rig is a type of rock drilling equipment used to drill holes in surrounding rocks during the drilling and blasting construction of tunnels and underground projects. The drilling rig can move to support the drilling operation. Currently, the drilling rig uses the principle of impact crushing to drill holes. Due to the uneven face at the beginning of drilling, the drill rod moves a lot and the top drill is subjected to a lot of force, which eventually leads to poor positioning of the drill rod and slow drilling speed, which seriously restricts the drilling speed and drilling position accuracy of the drilling rig.

[0003] In order to solve the above problems, it is necessary to reduce the movement of the drill rod in the early stage of drilling, thereby improving the drilling speed and accuracy of the drill rod. For this reason, many scholars at home and abroad have carried out research on vibration reduction of drill arms. The invention patent "A rock drilling rig drill arm rock drill tightening mechanism" with the publication number "CN 111852347A" is characterized by: the device includes a base, a second fixed ball, a positioning ball, a positioning claw, a rotating rod, and a pipe. The base is fixed on the drill arm of the rock drilling rig, and the base is provided with a through hole for drilling. Two second fixed balls are relatively fixed on both sides of the base, and the line connecting the centers of the two second fixed balls is perpendicular to the axis of the hole for drilling in space; the positioning ball is a hollow ball with a cutout, and the surface of the positioning ball is larger than 1 / 2 of a complete ball; the positioning ball is sleeved on the outside of the second fixed ball, that is, the positioning ball can rotate around the center of the second fixed ball; one end of the two positioning claws is fixed on the surface of the positioning ball, and the positioning claw is used to support the rock wall to be drilled; one end of the rotating rod is fixed on the surface of the second fixed ball; one end of the pipe is fixed on the surface of the positioning ball, and the pipe is sleeved on the outside of the rotating rod. The device realizes the tightening of the drill arm to a certain extent. However, when the inclination angle of the rock wall is relatively large, Figure 2The left hydraulic cylinder (80) shown in the figure has a much larger extension than the right hydraulic cylinder to ensure that the left positioning claw (120) contacts the rock wall surface. At this time, the base (10) and the drilling hole (11) thereon must also have a large inclination. The drill bit (01) passes through the drilling hole (11) and always remains parallel to the drill arm (00), that is, the angle between the axis of the drill bit (01) and the axis of the drilling hole (11) is large. In order to ensure that the vertical drill bit (01) passes through the drilling hole (11) with a large inclination, the only way is that the diameter of the drilling hole (11) is much larger than the diameter of the drill bit (01). Under the working condition of a small inclination angle of the rock wall surface, the drilling hole (11) and the drill bit (01) are basically coaxial. Obviously, the gap between the large-diameter drilling hole (11) and the small-diameter drill bit (01) is very large, which inevitably causes the drill bit (01) to move greatly in the drilling hole (11) at the initial stage of drilling, thereby affecting the drilling positioning accuracy. In addition, the inner wall of the borehole (11) is not equipped with a vibration isolation layer, which cannot reduce or even eliminate the radial movement of the drill bit (01), further reducing the drilling positioning accuracy. In particular, the radial amplitude of the positioning claws (120) along the borehole (11) cannot be adjusted. When the rock surface around the borehole is extremely uneven, it is impossible to achieve full contact and support between all the positioning claws (120) and the rock surface.

[0004] The invention patent "Mechanical Drill Arm Structure of Mining Drilling Vehicle" with the publication number "CN 112983414 A" is characterized in that: the structure includes a main drill arm, a group of drill arm angle adjustment driving parts are fixedly connected to the left side of the main drill arm, a group of drill arm amplitude adjustment driving parts are fixedly connected to the right side of the main drill arm, and a group of angle adjustment sliders are slidably connected to the left side of the main drill arm. By setting six groups of graded drill arms arranged in a circular array, multiple positions can be drilled at one time to improve the drilling efficiency. At the same time, the installation angle amplitude of the six groups of graded drill arms can be adjusted, the drilling range and the drilling angle can be adjusted, the drilling efficiency is improved, and it has stronger applicability. However, the structure essentially improves the drilling efficiency by increasing the number of drill arms. The specific measure is that six groups of graded drill arms (8) are added to the outer circumference of the main drill arm (1). The working task of the graded drill arms (8) is drilling, not tightening and positioning. It should be emphasized that, during the drilling process, each group of graded drill arms (8) is not tightened and positioned. When encountering an uneven rock surface, the drill rod on the graded drill arms (8) will move violently, resulting in poor drilling positioning accuracy, which cannot meet engineering requirements. At the same time, the working principle of the mechanism determines that when the angle of the graded drill arms (8) is adjusted, the angle of each group of graded drill arms (8) is the same, and the angle of a certain group of graded drill arms (8) cannot be adjusted separately. When encountering an extremely uneven rock surface, it is impossible to achieve that all graded drill arms (8) operate on the rock surface. Summary of the invention

[0005] In order to solve the existing problems, the present invention proposes a rock drilling rig drill arm tightening and positioning device, which is used to solve the problems of large drill rod movement, slow drilling speed and poor positioning accuracy during the initial drilling process of the drill arm. By adding a rubber layer to reduce the movement on the inner side of the drilling hole, and arranging multiple groups of angle, amplitude adjustment mechanisms and tightening mechanisms around the outer circle of the positioning mechanism, the synergistic effect makes the positioning mechanism have better stability, which can effectively reduce the radial movement of the drill rod; each group of tightening mechanisms is hinged with a shock-absorbing pad at the front end, and the tightening mechanism applies a certain pre-tightening force so that the shock-absorbing pad can tighten the face, which can further reduce the movement of the drill rod. The angle of each group of tightening mechanisms can be adjusted separately, so that the device can effectively adapt to the tightening and positioning of complex-shaped faces, thereby achieving the purpose of small drill rod movement, fast drilling speed and high positioning accuracy during the initial drilling of the drill arm.

[0006] In order to achieve the above-mentioned purpose, a rock drilling rig drill arm tightening and positioning device is provided, characterized in that: the device comprises a drill rod, a positioning mechanism, an angle adjustment mechanism, an amplitude adjustment mechanism, a slide seat, an amplitude modulation slider, a slider traction mechanism, and a tightening mechanism; the drill rod passes through the drilling hole of the positioning mechanism and performs rock drilling, a plurality of groups of angle adjustment mechanisms are evenly distributed on the outer circumference of the left side of the positioning mechanism through hinges, a plurality of groups of amplitude adjustment mechanisms are evenly distributed on the outer circumference of the middle part of the positioning mechanism through hinges, and a plurality of groups of slide seats are evenly distributed on the outer circumference of the right part of the positioning mechanism through threaded connection; the amplitude modulation slider can slide in the slide seat, and the amplitude modulation slider is hinged to the amplitude modulation active rod of the amplitude adjustment mechanism; the slider traction mechanism is symmetrically arranged in the circumferential direction of the positioning mechanism, the wire rope is connected to the amplitude modulation slider, and a group of tightening mechanisms are hinged to the outer sides of the angle adjustment mechanism and the amplitude adjustment mechanism located in the same phase.

[0007] The positioning mechanism consists of a sleeve, an angle-adjusting hinge seat, an amplitude-adjusting hinge seat, a rubber layer, and a drilling hole; the positioning mechanism is connected to the end of the drill arm, the drill rod passes through the drilling hole, the angle-adjusting hinge seat is used for the articulation of the positioning mechanism with the angle adjustment mechanism, the amplitude-adjusting hinge seat is used for the articulation of the positioning mechanism with the amplitude adjustment mechanism, the drill rod is in circumferential contact with the rubber layer, and the vibration generated by the rotation of the drill rod during rock drilling will be transmitted to the rubber layer with excellent vibration absorption performance, thereby reducing the movement of the drill rod and achieving precise positioning of rock drilling.

[0008] The angle adjustment mechanism comprises: an angle adjustment cylinder body and an angle adjustment piston rod; the angle adjustment cylinder body is hinged to the angle adjustment hinge seat on the positioning mechanism, and the angle adjustment piston rod is hinged to the tightening cylinder body of the tightening mechanism; the angle adjustment mechanism, the tightening cylinder body of the tightening mechanism, the amplitude adjustment driven rod of the amplitude adjustment mechanism, and the sleeve form a four-bar mechanism, and the angle adjustment piston rod moves in the angle adjustment cylinder body, so that the angle of the tightening mechanism can be adjusted, and then the tightening of the drill arm and the face of different shapes can be realized.

[0009] The amplitude adjustment mechanism comprises: an amplitude modulation active rod and an amplitude modulation driven rod; one end of the amplitude modulation active rod is hinged to the amplitude modulation slider, and the other end is hinged to the middle part of the amplitude modulation driven rod; one end of the amplitude modulation driven rod is hinged to the amplitude modulation hinge seat on the positioning mechanism, and the other end is hinged to the middle part of the tightening cylinder body; the amplitude modulation active rod, the amplitude modulation driven rod, the sleeve, and the amplitude modulation slider constitute a four-rod mechanism; the amplitude modulation slider slides left and right, driving the amplitude modulation active rod to push the amplitude modulation driven rod to swing around the amplitude modulation hinge seat, thereby changing the amplitude of the tightening mechanism, and further realizing the tightening of the drill arm and the face of different shapes.

[0010] The slide seat includes: a slider mounting plate, a slider limiting groove, a screw hole, and a slider mounting groove; firstly, the amplitude modulation slider is placed on the sleeve, and the slider mounting plate is fixed to the sleeve through the screw hole, while ensuring that the slider limiting groove limits the circumferential rotation of the amplitude modulation slider and enables the amplitude modulation slider to move axially along the slider limiting groove.

[0011] The slider traction mechanism includes: a motor, a pulley seat, a driving wheel, a wire rope, a pull ring, and a driven wheel; the driving wheel and the driven wheel are both installed on the pulley seat, a pull ring is installed on the left and right sides of the amplitude modulation slider, the wire rope is wound around the driving wheel and the driven wheel, and is connected to the pull rings on both sides of the amplitude modulation slider; the motor drives the driving wheel to rotate forward and reverse, and the wire rope pulls the amplitude modulation slider through the pull ring to slide left and right on the axis of the sleeve; two sets of slider traction mechanisms are symmetrically arranged on the sleeve.

[0012] The tightening mechanism includes: a tightening cylinder, a tightening piston rod, a ball joint, a shock-absorbing pad, a pressure sensor, an angle sensor, and an amplitude sensor; the tightening mechanism is hinged with the angle adjustment mechanism and the amplitude adjustment mechanism, and the tightening piston rod is controlled to move in the positioning cylinder by filling and draining oil; when the pressure sensor detects that the oil pressure in the cylinder reaches a set threshold, the tightening piston rod stops moving, and the tightening between the tightening mechanism and the palm face is completed; the ball joint at the end of the piston rod is hinged with the shock-absorbing pad, and the shock-absorbing pad can rotate around the ball joint according to the shape of the palm face, so that the end face of the shock-absorbing pad is always closely fitted with the palm face; when the position of the tightening mechanism is adjusted, the angle sensor and the amplitude sensor detect the amplitude and angle in real time, and can complete the adjustment of the position of the tightening mechanism according to the surrounding environment or the set value.

[0013] The left and right sliding of the amplitude modulation slider can simultaneously control the synchronous swing of multiple groups of amplitude adjustment mechanisms, so that the tightening positioning device has circumferential stability; each group of angle adjustment mechanisms can individually adjust the angle of the tightening mechanism in its phase. When the tightening mechanism encounters interference during the positioning process, the joint action of the amplitude adjustment mechanism and the angle adjustment mechanism can effectively enable the multiple groups of tightening mechanisms to find a suitable position to tighten the palm face while avoiding interference.

[0014] The plurality of angle adjustment mechanisms, amplitude adjustment mechanisms and slide seats are 3 to 5 in number, and the number of the three is the same and the phases correspond one to one.

[0015] Compared with the prior art, the above-mentioned rock drilling trolley drill arm jacking and positioning device has the following beneficial effects:

[0016] ① Small radial movement of the drill rod. The rubber layer in the positioning mechanism is in circumferential contact with the drill rod, with a large contact area. The rubber layer with excellent vibration absorption performance can effectively reduce the radial movement of the drill rod. At the same time, the rubber layer contains the drill bit, effectively eliminating the eccentric force generated by the rock drill during operation and improving the overall rigidity of the drill arm. The multiple groups of angle and amplitude adjustment mechanisms and tightening mechanisms arranged around the outer circle of the positioning device work together to make the positioning mechanism more stable and further reduce the radial movement of the drill rod.

[0017] ② The drill arm has sufficient tightening force. The tightening mechanism applies a certain pre-tightening force to tighten the shock-absorbing pad against the face of the tunnel. The tightening mechanism is equipped with a pressure sensor to adjust the pre-tightening force according to the specific construction conditions. There are multiple sets of tightening mechanisms arranged circumferentially, so that the drill arm can fully tighten the face of the tunnel.

[0018] ③High drill rod positioning accuracy. Since the device can effectively reduce the radial movement of the drill rod and ensure that the drill arm is pressed against the face with sufficient tightening force, it can effectively improve the positioning accuracy of the drill rod.

[0019] ④ Wide application range. The coordinated action of the amplitude and angle adjustment mechanism can prevent interference between the clamping mechanism and the face during clamping. During the movement of the drill arm, the amplitude, angle adjustment mechanism and the clamping mechanism can be retracted around the positioning mechanism. Each set of angle adjustment mechanisms can adjust the angle of the clamping mechanism in its phase separately, which can effectively enable each set of clamping mechanisms to find a suitable position to clamp the face. The ball joint at the end of the shock-absorbing pad and the clamping piston rod is hinged and can rotate around the ball joint to adapt to complex-shaped faces, so that the end face of the shock-absorbing pad is always in close contact with the face.

[0020] ⑤Easy to install and replace wearing parts. The slide seat is connected by thread to install the amplitude modulation slider on the outer circumference of the positioning mechanism, and the amplitude modulation slider is easy to install and replace after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an isometric schematic diagram of the structure of the present invention.

[0022] Figure 2 It is the front view of the structure of the present invention

[0023] Figure 3 It is a schematic diagram of the positioning mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the angle adjustment mechanism of the present invention.

[0025] Figure 5It is a schematic diagram of the amplitude adjustment mechanism of the present invention.

[0026] Figure 6 It is a schematic diagram of the slide structure of the present invention.

[0027] Figure 7 It is a schematic diagram of the slider traction mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the tightening mechanism of the present invention.

[0029] above Figures 1 to 8 The markings in the figure are: 1. Drill rod; 2. Positioning mechanism, 2-1. Sleeve, 2-2. Angle adjustment hinge seat, 2-3. Amplitude adjustment hinge seat, 2-4. Rubber layer, 2-5. Drill hole; 3. Angle adjustment mechanism, 3-1. Angle adjustment cylinder body, 3-2. Angle adjustment piston rod; 4. Amplitude adjustment mechanism, 4-1. Amplitude adjustment active rod, 4-2. Amplitude adjustment driven rod; 5. Sliding seat, 5-1. Slider mounting plate, 5-2. Slider limit groove, 5-3. Screw hole, 5-4, slider installation slot; 6, amplitude modulation slider; 7, slider traction mechanism, 7-1, motor, 7-2, pulley seat, 7-3, driving wheel, 7-4, wire rope, 7-5, pull ring, 7-6, driven wheel; 8, tightening mechanism, 8-1, tightening cylinder, 8-2, tightening piston rod, 8-3, ball joint, 8-4, shock-absorbing pad, 8-5, pressure sensor, 8-6, angle sensor, 8-7, amplitude sensor; 9, palm face. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0031] The present invention discloses a rock drilling trolley drill arm tightening and positioning device, which comprises a drill rod 1, a positioning mechanism 2, an angle adjustment mechanism 3, an amplitude adjustment mechanism 4, a sliding seat 5, an amplitude adjustment slide block 6, a slide block traction mechanism 7, and a tightening mechanism 8. The positioning mechanism 2 includes: a sleeve 2-1, an angle adjustment hinge seat 2-2, an amplitude adjustment hinge seat 2-3, a rubber layer 2-4, and a drilling hole 2-5; the angle adjustment mechanism 3 includes: an angle adjustment cylinder body 3-1, an angle adjustment piston rod 3-2; the amplitude adjustment mechanism 4 includes: an amplitude modulation active rod 4-1, an amplitude modulation driven rod 4-2; the slide seat 5 includes: a slider mounting plate 5-1, a slider limit groove 5-2, a screw hole 5-3, and a slider mounting groove 5-4; the slider traction mechanism 7 includes: a motor 7-1, a pulley seat 7-2, a driving wheel 7-3, a wire rope 7-4, a pull ring 7-5, and a driven wheel 7-6; the tightening mechanism 8 includes: a tightening cylinder body 8-1, a tightening piston rod 8-2, a ball joint 8-3, a shock absorbing pad 8-4, a pressure sensor 8-5, an angle sensor 8-6, and an amplitude sensor 8-7.

[0032] The drill rod 1 passes through the drilling hole 2-5 of the positioning mechanism 2 and drills the rock. Three groups of angle adjustment mechanisms 3 are evenly distributed on the outer circumference of the left side of the positioning mechanism 2 through hinges, three groups of amplitude adjustment mechanisms 4 are evenly distributed on the outer circumference of the middle part of the positioning mechanism 2 through hinges, and three groups of slide seats 5 are evenly distributed on the outer circumference of the right part of the positioning mechanism 2 through threaded connection; the amplitude modulation slider 6 can slide in the slide seat 5, and the amplitude modulation slider 6 is hinged to the amplitude modulation active rod 4-1 of the amplitude adjustment mechanism 4; the slider traction mechanism 7 is symmetrically arranged in the circumferential direction of the positioning mechanism 2, and the wire rope 7-4 is connected to the amplitude modulation slider 6, and a group of tightening mechanisms 8 are hinged together on the outer sides of the angle adjustment mechanism 3 and the amplitude adjustment mechanism 4 located in the same phase.

[0033] The positioning mechanism 2 is connected to the end of the drill arm, and the drill rod 1 passes through the bore 2-5 calmly. The angle adjustment hinge 2-2 is used for the articulation of the positioning mechanism 2 and the angle adjustment mechanism 3, and the amplitude adjustment hinge 2-3 is used for the articulation of the positioning mechanism 2 and the amplitude adjustment mechanism 4. The drill rod 1 is in circumferential contact with the rubber layer 2-4, and the contact area is large. The vibration generated by the rotation of the drill rod 1 during rock drilling will be transmitted to the rubber layer 2-4 with excellent vibration absorption performance, thereby reducing the radial movement of the drill rod 1 and achieving precise positioning of rock drilling; the rubber layer 2-4 contains the drill rod 1, effectively eliminating the eccentric force generated by the rock drill during operation, improving the overall stiffness of the drill arm, and ultimately achieving the purpose of greatly improving the positioning accuracy of the drill rod 1.

[0034] The angle adjustment cylinder body 3-1 is hinged to the angle adjustment hinge seat 2-2 on the positioning mechanism 2, and the angle adjustment piston rod 3-2 is hinged to the tightening cylinder body 8-1 of the tightening mechanism 8; the angle adjustment mechanism 3, the tightening cylinder body 8-1 of the tightening mechanism 8, the amplitude adjustment driven rod 4-2 of the amplitude adjustment mechanism 4, and the sleeve 2-1 form a four-bar mechanism, and the angle adjustment piston rod 3-2 moves in the angle adjustment cylinder body 3-1, so that the angle of the tightening mechanism 8 can be adjusted, and then the tightening of the drill arm and the face 9 of different shapes can be realized.

[0035] One end of the amplitude modulation active rod 4-1 is hinged to the amplitude modulation slider 6, and the other end is hinged to the middle of the amplitude modulation driven rod 4-2; one end of the amplitude modulation driven rod 4-2 is hinged to the amplitude modulation hinge seat 2-3 on the positioning mechanism 2, and the other end is hinged to the middle of the tightening cylinder 8-1; the amplitude modulation active rod 4-1, the amplitude modulation driven rod 4-2, the sleeve 2-1, and the amplitude modulation slider 6 constitute a four-bar mechanism; the amplitude modulation slider 6 slides left and right, driving the amplitude modulation active rod 4-1 to push the amplitude modulation driven rod 4-2 to swing around the amplitude modulation hinge seat 2-3, thereby changing the amplitude of the tightening mechanism 8, and then realizing the tightening of the drill arm and the face 9 of different shapes; through the coordinated action of the amplitude adjustment mechanism 4 and the angle adjustment mechanism 3, the tightening mechanism 8 can avoid interference in the process of tightening the face 9, and the drill arm tightening and positioning device has a wide range of applications.

[0036] The amplitude modulation slider 6 is placed on the sleeve 2-1, and the slider mounting plate 5-1 is fixed to the sleeve 2-1 through the screw hole 5-3. At the same time, it is ensured that the slider limit groove 5-2 limits the circumferential rotation of the amplitude modulation slider 6 and enables the amplitude modulation slider 6 to move axially along the slider limit groove 5-2; since the slide seat 5 is connected to the outer circumference of the positioning mechanism 2 by a threaded connection, the amplitude modulation slider 6 is easy to install and replace after wear.

[0037] The driving wheel 7-3 and the driven wheel 7-6 are both installed on the pulley seat 7-2, and a pull ring 7-5 is installed on the left and right sides of the amplitude modulation slider 6. The wire rope 7-4 is wound around the driving wheel 7-3 and the driven wheel 7-6, and is connected to the pull rings 7-5 on both sides of the amplitude modulation slider 6; the motor 7-1 drives the driving wheel 7-3 to rotate forward and reverse, and the wire rope 7-4 pulls the amplitude modulation slider 6 through the pull ring 7-5 to slide left and right on the axis of the sleeve 2-1; two sets of slider traction mechanisms 7 are symmetrically arranged on the sleeve 2-1.

[0038] The tightening mechanism 8 is hinged with the angle adjustment mechanism 3 and the amplitude adjustment mechanism 4, and controls the movement of the tightening piston rod 8-2 in the positioning cylinder 8-1 by filling and draining oil; when the pressure sensor 8-5 detects that the oil pressure in the cylinder has reached the set threshold, the tightening piston rod 8-2 stops moving, completing the tightening between the tightening mechanism 8 and the face 9; the ball joint 8-3 at the end of the piston rod is hinged with the shock-absorbing pad 8-4, and the shock-absorbing pad 8-4 can rotate around the ball joint 8-3 according to the shape of the face 9, so that the end face of the shock-absorbing pad 8-4 is always in close contact with the face 9; when the position of the tightening mechanism 8 is adjusted, the angle sensor 8-6 and the amplitude sensor 8-7 detect the amplitude and angle in real time, and can complete the adjustment of the position of the tightening mechanism 8 according to the surrounding environment or the set value; the tightening mechanism 8 applies A certain pre-tightening force makes the shock-absorbing pad 8-4 press against the face 9. A pressure sensor 8-5 is arranged in the tightening mechanism 8 to adjust the pre-tightening force according to the specific construction conditions. Three groups of tightening mechanisms 8 are arranged circumferentially. The three groups of tightening mechanisms 8 apply pre-tightening force to the face 9 at the same time, which can effectively solve the problems of drilling difficulties, large movement, and low positioning accuracy of the drill arm due to insufficient tightening force. Since there are three groups of shock-absorbing pads 8-4 arranged circumferentially, the shock-absorbing pad 8-4 is hinged to the ball joint 8-3 at the end of the tightening piston rod 8-2 in the tightening mechanism 8. The shock-absorbing pad 8-4 can rotate around the ball joint 8-3 according to the shape of the face 9, so that the end face of the shock-absorbing pad 8-4 is always in close contact with the face 9, thereby achieving tightening with the complex-shaped face 9 and enhancing the applicability of the drill arm tightening and positioning device.

[0039] The left and right sliding of the amplitude modulation slider 6 can simultaneously control the synchronous swing of the three groups of amplitude adjustment mechanisms 4, so that the tightening positioning device has circumferential stability; each group of angle adjustment mechanisms 3 can individually adjust the angle of the tightening mechanism 8 in the phase in which it is located. When the tightening mechanism 8 encounters interference during the positioning process, the joint action of the amplitude adjustment mechanism 4 and the angle adjustment mechanism 3 can effectively enable the three groups of tightening mechanisms 8 to find a suitable position to tighten the palm face 9 while avoiding interference.

[0040] Working principle: When in use, first install the drill arm tightening and positioning device at the end of the drill arm, and place the drill rod 1 in the borehole 2-5. Move the drill arm to a position close to the face 9. At this time, the motor 7-1 drives the driving wheel 7-3 to rotate forward and reverse, and the wire rope 7-4 pulls the amplitude modulation slider 6 through the pull ring 7-5 to slide left and right on the axis of the sleeve 2-1; the amplitude modulation active rod 4-1, the amplitude modulation driven rod 4-2, the sleeve 2-1, and the amplitude modulation slider 6 form a four-bar mechanism; the amplitude modulation slider 6 slides left and right, driving the amplitude modulation active rod 4-1 to push the amplitude modulation driven rod 4-2 to swing around the amplitude modulation hinge seat 2-3, and at the same time controls the synchronous swing of the three groups of amplitude adjustment mechanisms 4, so as to change the amplitude of the three groups of tightening mechanisms 8; the angle adjustment mechanism 3, the tightening cylinder 8-1 of the tightening mechanism 8, the amplitude modulation driven rod 4-2 of the amplitude adjustment mechanism 4, and the sleeve 2-1 A four-bar mechanism is formed; three groups of angle adjustment mechanisms 3 move in the angle adjustment cylinder 3-1 through the angle adjustment piston rod 3-2, so that the angle of the clamping mechanism 8 in the phase can be adjusted separately; due to the uneven shape of the palm face 9, the angle adjustment mechanism 3 and the amplitude adjustment mechanism 4 cooperate to achieve the adjustment of different clamping positioning positions of the three groups of clamping mechanisms 8 while avoiding interference; the clamping mechanism 8 controls the movement of the clamping piston rod 8-2 in the positioning cylinder 8-1 by filling and draining oil, thereby achieving the clamping of the clamping mechanism 8 and the palm face 9. In this process, the shock-absorbing pad 8-4 contacts the palm face 9 and rotates around the ball joint 8-3 according to the shape of the palm face 9, so that the shock-absorbing pad 8-4 fits tightly to the palm face 9.

[0041] The above embodiments are only specific examples for further describing the purpose, technical solutions and beneficial effects of the present invention, and the present invention is not limited thereto. Any equivalent replacement, modification, etc. made within the disclosure scope of the present invention are included in the protection scope of the present invention.

Claims

1. A rock drilling trolley drill arm jacking and positioning device, characterized in that: The device comprises a drill rod (1), a positioning mechanism (2), an angle adjustment mechanism (3), an amplitude adjustment mechanism (4), a slide seat (5), an amplitude adjustment slide block (6), a slide block traction mechanism (7), and a tightening mechanism (8); the drill rod (1) passes through a drilling hole (2-5) of the positioning mechanism (2) and performs rock drilling; a plurality of angle adjustment mechanisms (3) are evenly distributed on the left outer circumference of the positioning mechanism (2) through hinge connection; a plurality of amplitude adjustment mechanisms (4) are evenly distributed on the middle outer circumference of the positioning mechanism (2) through hinge connection; A plurality of groups of slide seats (5) are evenly distributed on the outer circumference of the right part of the mechanism (2) through threaded connection; an amplitude modulation slide block (6) can slide in the slide seat (5), and the amplitude modulation slide block (6) is hinged to an amplitude modulation active rod (4-1) of the amplitude adjustment mechanism (4); a slide block traction mechanism (7) is symmetrically arranged in the circumferential direction of the positioning mechanism (2), a steel wire rope (7-4) is connected to the amplitude modulation slide block (6), and a group of tightening mechanisms (8) are hingedly connected to the outer sides of the angle adjustment mechanism (3) and the amplitude adjustment mechanism (4) located in the same phase; The positioning mechanism (2) is composed of a sleeve (2-1), an angle adjustment hinge seat (2-2), an amplitude adjustment hinge seat (2-3), a rubber layer (2-4), and a drilling hole (2-5); the positioning mechanism (2) is connected to the end of the drill arm, the drill rod (1) passes through the drilling hole (2-5), the angle adjustment hinge seat (2-2) is used for articulating the positioning mechanism (2) with the angle adjustment mechanism (3), the amplitude adjustment hinge seat (2-3) is used for articulating the positioning mechanism (2) with the amplitude adjustment mechanism (4), the drill rod (1) is in circumferential contact with the rubber layer (2-4), and the vibration generated by the rotation of the drill rod (1) during rock drilling is transmitted to the rubber layer (2-4) with excellent vibration absorption performance, thereby reducing the movement of the drill rod (1) and achieving accurate positioning rock drilling; The angle adjustment mechanism (3) comprises: an angle adjustment cylinder body (3-1) and an angle adjustment piston rod (3-2); the angle adjustment cylinder body (3-1) is hingedly connected to an angle adjustment hinge seat (2-2) on the positioning mechanism (2), and the angle adjustment piston rod (3-2) is hingedly connected to a tightening cylinder body (8-1) of a tightening mechanism (8); the angle adjustment mechanism (3), the tightening cylinder body (8-1) of the tightening mechanism (8), the amplitude adjustment driven rod (4-2) of the amplitude adjustment mechanism (4), and the sleeve (2-1) form a four-bar mechanism, and the angle of the tightening mechanism (8) can be adjusted by moving the angle adjustment piston rod (3-2) in the angle adjustment cylinder body (3-1), thereby realizing tightening of the drill arm and the tunnel faces (9) of different shapes; The amplitude adjustment mechanism (4) comprises: an amplitude modulation active rod (4-1) and an amplitude modulation driven rod (4-2); one end of the amplitude modulation active rod (4-1) is hinged to the amplitude modulation slider (6), and the other end is hinged to the middle of the amplitude modulation driven rod (4-2); one end of the amplitude modulation driven rod (4-2) is hinged to the amplitude modulation hinge seat (2-3) on the positioning mechanism (2), and the other end is hinged to the middle of the tightening cylinder (8-1); the amplitude modulation active rod (4-1), the amplitude modulation driven rod (4-2), the sleeve (2-1), and the amplitude modulation slider (6) form a four-rod mechanism; the amplitude modulation slider (6) slides left and right, driving the amplitude modulation active rod (4-1) to push the amplitude modulation driven rod (4-2) to swing around the amplitude modulation hinge seat (2-3), thereby changing the amplitude of the tightening mechanism (8), and further realizing the tightening of the drill arm and the face (9) of different shapes; The slide seat (5) comprises: a slider mounting plate (5-1), a slider limiting groove (5-2), a screw hole (5-3), and a slider mounting groove (5-4); the amplitude modulation slider (6) is first placed on the sleeve (2-1), and the slider mounting plate (5-1) is fixed to the sleeve (2-1) through the screw hole (5-3), while ensuring that the slider limiting groove (5-2) limits the circumferential rotation of the amplitude modulation slider (6) and enables the amplitude modulation slider (6) to move axially along the slider limiting groove (5-2); The slider traction mechanism (7) comprises: a motor (7-1), a pulley seat (7-2), a driving wheel (7-3), a steel wire rope (7-4), a pull ring (7-5), and a driven wheel (7-6); the driving wheel (7-3) and the driven wheel (7-6) are both mounted on the pulley seat (7-2); a pull ring (7-5) is mounted on the left and right sides of the amplitude modulation slider (6); the steel wire rope (7-4) is wound around the driving wheel (7-3) and the driven wheel (7-6), and is connected to the pull rings (7-5) on both sides of the amplitude modulation slider (6); the motor (7-1) drives the driving wheel (7-3) to rotate forward and reverse, and the steel wire rope (7-4) pulls the amplitude modulation slider (6) through the pull ring (7-5) to slide left and right on the axial direction of the sleeve (2-1); two groups of slider traction mechanisms (7) are symmetrically arranged on the sleeve (2-1); The tightening mechanism (8) comprises: a tightening cylinder body (8-1), a tightening piston rod (8-2), a ball joint (8-3), a shock-absorbing pad (8-4), a pressure sensor (8-5), an angle sensor (8-6), and an amplitude sensor (8-7); the tightening mechanism (8) is hingedly connected to the angle adjustment mechanism (3) and the amplitude adjustment mechanism (4), and controls the tightening piston rod (8-2) to move in the positioning cylinder body (8-1) by filling and draining oil; when the pressure sensor (8-5) detects that the oil pressure in the oil cylinder reaches a set threshold, the tightening piston rod (8-2) The movement stops, and the tightening between the tightening mechanism (8) and the palm face (9) is completed; the ball joint (8-3) at the end of the piston rod is hinged with the shock-absorbing pad (8-4), and the shock-absorbing pad (8-4) can rotate around the ball joint (8-3) according to the shape of the palm face (9), so that the end face of the shock-absorbing pad (8-4) is always in close contact with the palm face (9); when the position of the tightening mechanism (8) is adjusted, the angle sensor (8-6) and the amplitude sensor (8-7) detect the amplitude and angle in real time, and can complete the adjustment of the position of the tightening mechanism (8) according to the surrounding environment or the set value.

2. A rock drilling rig drill arm jacking and positioning device according to claim 1, characterized in that: The amplitude modulation slider (6) slides left and right to simultaneously control the synchronous swing of multiple groups of amplitude adjustment mechanisms (4), so that the tightening positioning device has circumferential stability; each group of angle adjustment mechanisms (3) can independently adjust the angle of the tightening mechanism (8) in the phase in which it is located. When the tightening mechanism (8) encounters interference during the positioning process, the combined action of the amplitude adjustment mechanism (4) and the angle adjustment mechanism (3) can effectively enable the multiple groups of tightening mechanisms (8) to find a suitable position to tighten the palm face (9) while avoiding interference.

3. The rock drilling rig drill arm jacking and positioning device according to claim 1, characterized in that: The plurality of angle adjustment mechanisms (3), amplitude adjustment mechanisms (4) and slide seats (5) are 3 to 5 in number, and the number of the three is the same and the phases correspond one to one.

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