Secondary telescopic arm for drill jumbo
By designing an extended telescopic arm, improving the articulated structure and lubrication system, the problems of insufficient telescopic stroke and angle adjustment range of the telescopic arm of the drilling rig have been solved, achieving higher flexibility and sealing to meet the needs of complex construction environments.
Patent Information
- Application Number
- CN202423168692.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The telescopic arm structure of the existing rock drilling rig has problems such as small telescopic stroke, limited pitch angle adjustment range, and small angle adjustment range of the crank arm thruster, which cannot meet the complex needs of modern mining and tunnel construction.
A two-stage telescopic arm for a rock drilling rig was designed, which included an extended telescopic arm, an improved articulated structure, an angle adjustment cylinder, and a sealing device. The telescopic stroke and angle adjustment range were increased, and the lubrication system was optimized through sliding contact components.
The telescopic stroke is increased, the flexibility and controllability are improved, the adjustment range of the crank arm thruster is expanded, the sealing and service life of the equipment are improved, and it adapts to the needs of complex construction environments.
Smart Images
Figure CN223423931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of engineering machinery, in particular to a secondary telescopic arm for a rock drilling trolley. Background Art
[0002] In modern mining and tunnel construction, precise rock drilling is crucial for ensuring project quality and improving efficiency. A drilling rig, also known as a drilling rig, is a specialized piece of rock drilling equipment used in tunneling and underground projects. The drilling rig method offers advantages such as speed, automation, safety, and high quality. Furthermore, it provides a favorable tunneling environment.
[0003] The telescopic arm structure of the current drilling rig is as follows Figure 10 As shown, it includes a base arm connected to the drilling rig and a pitch angle adjustment cylinder, a telescopic arm that can be extended and retracted relative to the base arm, a spiral hydraulic rotary motor mounted on the end of the telescopic arm, and a crank arm thruster mounting bracket and crank arm thruster. The main problems with the current telescopic arm of a drilling rig are: first, the telescopic stroke is relatively small; second, the base arm can only be adjusted in pitch relative to the drilling rig via the pitch angle adjustment cylinder, and cannot be adjusted to the left or right swing angle relative to the drilling rig, requiring the drilling rig to rotate and adjust the left and right position; third, the angle adjustment range of the crank arm thruster is relatively small. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a two-stage telescopic arm for a rock drilling rig for construction selection, which can better target complex construction environments such as modern mines and tunnels, as well as complex construction requirements.
[0005] The technical solution adopted by this utility model is:
[0006] A two-stage telescopic arm for a rock drilling rig comprises a basic arm and a pitch angle adjustment cylinder, a telescopic arm capable of being telescoped relative to the basic arm, a spiral hydraulic rotary motor mounted on the end of the telescopic arm, and a crank arm thruster mounting frame and a crank arm thruster; one side of the basic arm and a set of pitch angle adjustment cylinders are connected to the rock drilling rig via a drill arm seat; an extended telescopic arm is further provided between the basic arm and the telescopic arm, the extended telescopic arm being telescopically connected to the basic arm, and the telescopic arm being telescopically connected to the extended telescopic arm; a spiral hydraulic rotary motor is mounted on the end of the telescopic arm via a front seat of the drill arm, and an angle adjustment cylinder is provided on the telescopic arm.
[0007] Furthermore, one side of the drill arm seat is a plate structure connected to the drilling rig with bolts, and the other side is provided with three groups of articulated seats arranged in a triangle; one end of the basic arm and a group of pitch angle adjustment cylinders are installed on the three groups of articulated seats through an articulated joint, and the articulated joint can rotate horizontally relative to the articulated seat, and one end of the basic arm and a group of pitch angle adjustment cylinders can rotate vertically relative to the articulated joint.
[0008] Furthermore, one end of the extended telescopic arm is inserted into the interior of the basic arm, and a first telescopic cylinder for controlling the extension and retraction of the extended telescopic arm is provided inside the basic arm, and the telescopic rod of the first telescopic cylinder is connected to the extended telescopic arm; one end of the telescopic arm is inserted into the interior of the extended telescopic arm, and a second telescopic cylinder is installed at the bottom outside the interior of the extended telescopic arm, and the telescopic rod of the second telescopic cylinder is connected to the telescopic arm through a connecting seat.
[0009] Furthermore, sealing end plates are provided at the ends where the basic arm is connected to the extended telescopic arm, and at the ends where the extended telescopic arm is connected to the telescopic arm, and rubber sealing rings are installed on the sealing end plates.
[0010] Furthermore, a sliding contact assembly is provided in the basic arm and the extended telescopic arm, and the sliding contact assembly is installed at the end where the basic arm is connected to the extended telescopic arm and at the end where the extended telescopic arm is connected to the telescopic arm; the sliding contact assembly includes an external oil cup mounting plate, an oil cup and a slider, the slider is fixedly installed inside the basic arm or the extended telescopic arm, the external oil cup mounting plate is fixedly installed outside the basic arm or the extended telescopic arm, and the oil cup extends through the external oil cup mounting plate, the basic arm or the extended telescopic arm to the bottom of the slider.
[0011] Furthermore, one side of the front seat of the drill arm is a circular rotating motor mounting seat, and the other side is provided with three groups of articulated seats arranged in an inverted triangle; one end of the telescopic arm and a group of angle adjustment cylinders are installed on the three groups of articulated seats through an articulated joint, and the other end of a group of angle adjustment cylinders is installed on the upper part outside the telescopic arm through a cylinder articulated seat. The articulated joint can rotate horizontally relative to the articulated seat, and the telescopic arm and one end of a group of angle adjustment cylinders can rotate vertically relative to the articulated joint.
[0012] Furthermore, the crank arm thruster mounting frame includes an L-shaped connector, a crank arm and a crank arm adjusting cylinder; the lower part of the connector is connected to the spiral hydraulic rotating motor, and the upper part thereof has a tubular structure; one side of the crank arm is rotatably connected to the connector through an axis, and a thruster slide and a thruster fixing frame for cooperating with the thruster installation are provided above it; one end of the crank arm adjusting cylinder is installed on one side of the crank arm through a mounting seat, and its telescopic rod is installed on the tubular structure of the connector through a connecting seat.
[0013] The beneficial effects of the utility model are:
[0014] Increased telescopic stroke: By adding and lengthening the telescopic arm, the overall telescopic stroke is effectively increased, expanding the operating range of the drilling rig, and can adapt to more complex construction environments and longer-distance operations.
[0015] Improved flexibility: The basic boom achieves left-right swinging through the boom mount and articulated joint structure, eliminating the need to rely on the overall rotation of the drill rig to adjust the left-right position. This improves the controllability and flexibility of the drill rig and shortens operation time. The addition of an angle adjustment cylinder on the telescopic boom, combined with the front boom mount, further enhances the accuracy and flexibility of angle adjustment.
[0016] Expanding the adjustment range of the crank arm thruster: By improving the structure of the crank arm thruster mounting frame, the crank arm thruster can be adjusted within a larger angle range, improving the adaptability of rock drilling operations.
[0017] Enhanced sealing: Sealing end plates and rubber sealing rings are added at the connection between the basic arm and the extended telescopic arm, as well as at the connection between the extended telescopic arm and the telescopic arm, which effectively improves the sealing of the hydraulic system, reduces the risk of oil leakage, and extends the service life of the equipment.
[0018] Improved lubrication system: Setting up sliding contact components, including oil cups and sliders, can effectively lubricate the moving parts of the telescopic arm, reduce friction, reduce wear, extend the service life of the equipment and improve work efficiency.
[0019] In summary, the secondary telescopic arm for the drilling rig significantly improves the telescopic stroke, flexibility and reliability of the telescopic arm of the drilling rig by adding an extended telescopic arm, improving the articulated structure, optimizing the cylinder layout and adding sealing and lubrication devices, enabling it to better adapt to the requirements of complex construction environments such as modern mines and tunnels. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of the secondary telescopic arm of the rock drilling rig of the utility model;
[0021] Figure 3 This is a schematic diagram of the basic arm, extended telescopic arm and driving structure of the telescopic arm of the utility model;
[0022] Figure 4 This is a structural diagram of the sealing end plate of the utility model;
[0023] Figure 5 This is a schematic structural diagram of the sliding contact assembly of the utility model;
[0024] Figure 6 This is a structural diagram of the drill arm seat of the utility model;
[0025] Figure 7The schematic diagram of left-right regulation of the two-stage telescopic arm of the utility model;
[0026] Figure 8 The structure schematic diagram of the front seat of the drill arm of the utility model;
[0027] Figure 9 The connection schematic diagram of the connecting body and the crank arm of the utility model;
[0028] Figure 10 The structure schematic diagram of the existing drill rig;
[0029] In the drawing: 1, basic arm; 2, pitch angle adjusting oil cylinder; 3, telescopic arm; 4, spiral hydraulic rotating motor; 5, crank arm propeller mounting frame; 6, drill arm seat; 7, lengthened telescopic arm; 8, drill arm front seat; 9, angle adjusting oil cylinder; 10, hinged seat; 11, hinge joint; 12, first telescopic oil cylinder; 13, second telescopic oil cylinder; 14, connecting seat; 15, sealing end plate; 16, rubber sealing ring; 17, external oil cup mounting plate; 18, oil cup; 19, sliding block; 20, oil cylinder hinged seat; 21, connecting body; 22, crank arm; 23, crank arm adjusting oil cylinder; 24, shaft body; 25, propeller sliding plate; 26, propeller fixing frame. DETAILED DESCRIPTION
[0030] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0031] The embodiment provides a two-stage telescopic arm for a drill rig, as shown in Figure 1 and Figure 2 The two-stage telescopic arm for the drill rig comprises a basic arm 1 and a pitch angle adjusting oil cylinder 2, a telescopic arm 3 capable of being telescopically extended relative to the basic arm 1, a spiral hydraulic rotating motor 4 installed at the end of the telescopic arm 3, and a crank arm propeller mounting frame 5 and a crank arm propeller.
[0032] The first difference from the existing drill rig telescopic arm is that, as shown in Figure 1 and Figure 2 In the embodiment, a lengthened telescopic arm 7 is further arranged between the basic arm 1 and the telescopic arm 3, the lengthened telescopic arm 7 is telescopically connected with the basic arm 1, the telescopic arm 3 is telescopically connected with the lengthened telescopic arm 7, by increasing the lengthened telescopic arm 7, the overall telescopic stroke is increased, the operation range of the drill rig is expanded, and the drill rig can adapt to more complex construction environments and more distant operation requirements.
[0033] Specifically, as shown in Figure 3 , one end of the lengthened telescopic arm 7 is inserted into the inside of the basic arm 1, and the inside of the basic arm 1 is provided with a first telescopic oil cylinder 12 for controlling the telescoping of the lengthened telescopic arm 7. The telescopic rod of the first telescopic oil cylinder 12 is connected with the lengthened telescopic arm 7, so that the telescoping of the lengthened telescopic arm 7 relative to the basic arm 1 is controlled by the first telescopic oil cylinder 12. One end of the telescopic arm 3 is inserted into the inside of the lengthened telescopic arm 7, and the bottom outside of the lengthened telescopic arm 7 is provided with a second telescopic oil cylinder 13. The telescopic rod of the second telescopic oil cylinder 13 is connected with the telescopic arm 3 through a connecting seat 14, so that the telescoping of the telescopic arm 3 relative to the lengthened telescopic arm 7 is controlled by the second telescopic oil cylinder 13. Through the telescoping of the lengthened telescopic arm 7 relative to the basic arm 1 and the telescoping of the telescopic arm 3 relative to the lengthened telescopic arm 7, the telescopic arm as a whole forms a two-stage telescopic arm.
[0034] Further, as a preferred technical solution of the embodiment, in order to prevent impurities such as sand and gravel from entering the two-stage telescopic arm, as shown in Figure 4 , in the embodiment, a sealing end plate 15 is arranged at the end of the basic arm 1 connected with the lengthened telescopic arm 7 and at the end of the lengthened telescopic arm 7 connected with the telescopic arm 3. The sealing end plate 15 is composed of two metal plates, and a rubber sealing ring 16 is clamped in the middle of the metal plates to prevent impurities such as sand and gravel from entering the two-stage telescopic arm through the rubber sealing ring 16. In addition, considering the lubrication problem, as shown in Figure 4 and 5 , a sliding contact assembly is arranged in the basic arm 1 and the lengthened telescopic arm 7. The sliding contact assembly is arranged at the end of the basic arm 1 connected with the lengthened telescopic arm 7 and at the end of the lengthened telescopic arm 7 connected with the telescopic arm 3. The sliding contact assembly includes an external oil cup mounting plate 17, an oil cup 18 and a sliding block 19. The sliding block 19 is fixedly installed in the inside of the basic arm 1 or the lengthened telescopic arm 7, and the external oil cup mounting plate 17 is fixedly installed on the outside of the basic arm 1 or the lengthened telescopic arm 7. The oil cup 18 extends to the bottom of the sliding block 19 through the external oil cup mounting plate 17, the basic arm 1 or the lengthened telescopic arm 7. Regularly adding lubricating grease into the oil cup 18 can reduce the friction coefficient, effectively lubricate the moving parts of the telescopic arm, reduce the friction, reduce wear and tear, prolong the service life of the equipment and improve the work efficiency.
[0035] The second difference from the existing jumbo telescopic arm is that, as shown in Figure 1 and Figure 2 , in the embodiment, a drill arm seat 6 is arranged on one side of the basic arm 1 and a group of pitch angle adjusting oil cylinders 2, so that one side of the basic arm 1 and the group of pitch angle adjusting oil cylinders 2 are connected with the jumbo through the drill arm seat 6. As shown in Figure 6As shown, the drill boom base 6 is a plate structure bolted to the drill rig, and the other side is provided with three sets of hinge seats 10 arranged in a triangular shape. The basic arm 1 and one end of the group of pitch angle adjustment cylinders 2 are installed on the three sets of hinge seats 10 through hinge joints 11, which are installed on the hinge seats 10 through a pin shaft and can rotate horizontally relative to the hinge seats 10. The basic arm 1 and one end of the group of pitch angle adjustment cylinders 2 are connected to the hinge joints 11 through a pin shaft, and thus can rotate vertically relative to the hinge joints 11. Through the structure of the drill boom base 6 cooperating with the hinge joints 11, when the group of pitch angle adjustment cylinders 2 are simultaneously extended or shortened, the secondary telescopic arm is raised or lowered as a whole. As shown, Figure 7 As shown, when one of the group of pitch angle adjustment cylinders 2 is extended and one is shortened, the secondary telescopic arm swings to the left or right as a whole, so that the left and right positions are adjusted without relying on the rotation of the whole drill rig, improving the controllability and flexibility of the drill rig and shortening the operation time.
[0036] The fourth difference from the existing drill rig telescopic arm is that the elbow pusher mounting bracket 5 is optimized in the embodiment to better adjust the pitch angle. Specifically, as shown, Figure 1 and Figure 2 As shown, the drill boom front base 8 is similar in structure to the drill boom base 6, and the screw hydraulic rotary motor 4 is installed through the drill boom front base 8, and the telescopic arm 3 is provided with angle adjustment cylinders 9. Specifically, as shown, Figure 8 As shown, one side of the drill boom front base 8 is a circular rotary motor mounting seat, and the other side is provided with three sets of hinge seats 10 arranged in an inverted triangular shape. The telescopic arm 3 and one end of the group of angle adjustment cylinders 9 are installed on the three sets of hinge seats 10 through hinge joints 11, and the other end of the group of angle adjustment cylinders 9 is installed on the upper part outside the telescopic arm 3 through a cylinder hinge seat 20. The hinge joint 11 can rotate horizontally relative to the hinge seat 10, and the telescopic arm 3 and one end of the group of angle adjustment cylinders 9 can rotate vertically relative to the hinge joint 11. Through the structure of the drill boom front base 8 cooperating with the hinge joint 11, when the group of angle adjustment cylinders 9 are simultaneously extended or shortened, the screw hydraulic rotary motor 4 and the elbow pusher mounting bracket 5 are raised or lowered; when one of the group of angle adjustment cylinders 9 is extended and one is shortened, the screw hydraulic rotary motor 4 and the elbow pusher mounting bracket 5 swing to the left or right, thereby further increasing the accuracy and flexibility of angle adjustment.
[0037] The fourth difference from the existing drill rig telescopic arm is that the elbow pusher mounting bracket 5 is optimized in the embodiment to better adjust the pitch angle. Specifically, as shown, Figure 8 and Figure 9As shown, the crank arm thruster mounting frame 5 in this embodiment includes an L-shaped connector 21, a crank arm 22 and a crank arm adjusting cylinder 23; the lower part of the connector 21 is connected to the spiral hydraulic rotating motor 4, and the upper part thereof is a tubular structure; one side of the crank arm 22 is rotatably connected to the connector 21 through an axis 24, and a thruster slide 25 and a thruster fixing frame 26 for cooperating with the thruster installation are provided above it; one end of the crank arm adjusting cylinder 23 is installed on one side of the crank arm 22 through a mounting seat, and its telescopic rod is installed on the tubular structure of the connector 21 through the connecting seat.
[0038] After the crank arm thruster is installed on the crank arm 22 through the thruster slide 25 and the thruster fixing frame 26, the crank arm thruster and the crank arm thruster mounting frame 5 are started as a whole by the spiral hydraulic rotary motor 4 to achieve 360° rotation relative to the telescopic arm 3; at the same time, since the crank arm 22 is rotatably connected to the connecting body 21 through the shaft 24, the pitch angle of the crank arm thruster and the crank arm thruster mounting frame 5 is further regulated by controlling the extension and contraction of the crank arm adjustment cylinder 23.
[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A two-stage telescopic boom for a drilling rig, comprising a base boom and a pitch angle adjustment cylinder, a telescopic boom capable of extending and retracting relative to the base boom, a spiral hydraulic rotary motor mounted at the end of the telescopic boom, a crank arm thruster mounting bracket, and a crank arm thruster; characterized in that: One side of the basic arm and a set of pitch angle adjustment cylinders are connected to the drilling rig through the drill arm seat; an extended telescopic arm is provided between the basic arm and the telescopic arm, the extended telescopic arm is telescopically connected to the basic arm, and the telescopic arm is telescopically connected to the extended telescopic arm; a spiral hydraulic rotation motor is installed at the end of the telescopic arm through the front seat of the drill arm, and an angle adjustment cylinder is provided on the telescopic arm.
2. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: One side of the drill arm seat is a plate structure connected to the drilling rig with bolts, and the other side is provided with three groups of articulated seats arranged in a triangle; one end of the basic arm and a group of pitch angle adjustment cylinders are installed on the three groups of articulated seats through an articulated joint, and the articulated joint can rotate horizontally relative to the articulated seat, and one end of the basic arm and a group of pitch angle adjustment cylinders can rotate vertically relative to the articulated joint.
3. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: One end of the extended telescopic arm is inserted into the basic arm, and a first telescopic oil cylinder for controlling the extension and retraction of the extended telescopic arm is provided inside the basic arm, and the telescopic rod of the first telescopic oil cylinder is connected to the extended telescopic arm; one end of the telescopic arm is inserted into the extended telescopic arm, and a second telescopic oil cylinder is installed at the bottom outside the inside of the extended telescopic arm, and the telescopic rod of the second telescopic oil cylinder is connected to the telescopic arm through a connecting seat.
4. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: The end where the basic arm is connected to the extended telescopic arm, and the end where the extended telescopic arm is connected to the telescopic arm are both provided with sealing end plates, and rubber sealing rings are installed on the sealing end plates.
5. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: The basic arm and the extended telescopic arm are both provided with a sliding contact assembly, which is installed at the end where the basic arm is connected to the extended telescopic arm and at the end where the extended telescopic arm is connected to the telescopic arm; the sliding contact assembly includes an external oil cup mounting plate, an oil cup and a slider, the slider is fixedly installed inside the basic arm or the extended telescopic arm, the external oil cup mounting plate is fixedly installed outside the basic arm or the extended telescopic arm, and the oil cup extends through the external oil cup mounting plate, the basic arm or the extended telescopic arm to the bottom of the slider.
6. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: One side of the front seat of the drill arm is a circular rotating motor mounting seat, and the other side is provided with three groups of articulated seats arranged in an inverted triangle; one end of the telescopic arm and a group of angle adjustment cylinders are installed on the three groups of articulated seats through an articulated joint, and the other end of a group of angle adjustment cylinders is installed on the upper part outside the telescopic arm through a cylinder articulated seat. The articulated joint can rotate horizontally relative to the articulated seat, and the telescopic arm and one end of a group of angle adjustment cylinders can rotate vertically relative to the articulated joint.
7. The secondary telescopic arm for a drilling rig according to claim 1, characterized in that: The crank arm thruster mounting frame includes an L-shaped connector, a crank arm and a crank arm adjustment cylinder; the lower part of the connector is connected to the spiral hydraulic rotation motor, and the upper part thereof has a tubular structure; one side of the crank arm is rotationally connected to the connector through an axis, and a thruster slide and a thruster fixing frame for cooperating with the thruster installation are provided above it; one end of the crank arm adjustment cylinder is installed on one side of the crank arm through a mounting seat, and its telescopic rod is installed on the tubular structure of the connector through the connecting seat.