Drill boom folding mechanism of drill jumbo

Abstract

The utility model relates to a drill boom folding mechanism of a drill jumbo, and belongs to the technical field of mining equipment. According to the technical scheme, the device is arranged between a drill jumbo chassis and the tail end of a drill boom mechanism, and a drill boom mounting frame, an L-shaped connecting frame, a connecting rod and the tail end of the drill boom mechanism together form a four-bar mechanism; a cylinder rod of the drill arm lifting oil cylinder retracts and stretches out to drive the L-shaped connecting frame and the connecting rod to drive the tail end of the drill arm mechanism to rotate, and the drill arm stretching state and the drill arm folding state are switched. The foldable drill boom has the advantages that the overall length of the drill jumbo is shortened due to the fact that the drill boom can be folded, disassembly and assembly are not needed, the drill jumbo can directly enter a lifting cage after the drill boom is folded, transition operation is conducted, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to a drill arm folding mechanism of a rock drilling jumbo, belonging to the technical field of mining equipment. Background Technique

[0002] A rock drilling jumbo is a rock drilling equipment used in tunnel and underground engineering construction by the drill and blast method. It can move and support multiple rock drills to carry out drilling operations simultaneously. In the prior art, the drill arm mechanism of a rock drilling jumbo generally consists of a drill arm swing mechanism, a drill arm lifting mechanism, a drill arm, and a propulsion beam orientation mechanism. The overall length of a rock drilling jumbo is generally more than 7 meters. When the rock drilling jumbo is transferred in the underground mine, it needs to enter the hoisting cage for transfer. However, some hoisting cages have relatively small space dimensions, and the overall length of the rock drilling jumbo is relatively large. The rock drilling jumbo cannot enter the hoisting cage and can only be disassembled into several components to adapt to the space dimensions of the hoisting cage, and then reassembled after transfer; due to the complex structure of the rock drilling jumbo, it is time-consuming and laborious to disassemble and reassemble, which is not conducive to transfer operations. Content of the Utility Model

[0003] The purpose of the utility model is to provide a drill arm folding mechanism of a rock drilling jumbo. By folding the drill arm, the overall length of the rock drilling jumbo is shortened, and there is no need for disassembly and assembly. After the drill arm is folded, the rock drilling jumbo can directly enter the hoisting cage for transfer operations, which saves time and effort and solves the problems existing in the background technique.

[0004] The technical solution of the utility model is as follows:

[0005] A drill arm folding mechanism of a rock drilling jumbo is arranged between the chassis of the rock drilling jumbo and the tail end of the drill arm mechanism. A drill arm mounting frame is provided on the chassis of the rock drilling jumbo. The two ends of the drill arm mounting frame are respectively hinged to the rear part of the tail end of the drill arm mechanism and the cylinder body of the drill arm lifting oil cylinder; the cylinder rod of the drill arm lifting oil cylinder is hinged to the middle part of the L-shaped connecting frame. The two ends of the L-shaped connecting frame are respectively hinged to one end of the connecting rod and the middle part of the drill arm mounting frame. The other end of the connecting rod is hinged to the front part of the tail end of the drill arm mechanism. The drill arm mounting frame, the L-shaped connecting frame, the connecting rod, and the tail end of the drill arm mechanism together form a four-bar linkage; when the cylinder rod of the drill arm lifting oil cylinder retracts and extends, it drives the L-shaped connecting frame and the connecting rod to drive the tail end of the drill arm mechanism to rotate, so as to realize the conversion between the drill arm extended state and the drill arm folded state.

[0006] Further, three holes are provided on the L-shaped connecting frame, namely hole one, hole two and hole three are respectively provided at both ends and the L-shaped inflection point of the L-shaped connecting frame; holes four and five are respectively provided at both ends of the connecting rod. Hole one at one end of the L-shaped connecting frame is hinged to hole four at one end of the connecting rod through connecting pin shaft one, hole five at the other end of the connecting rod is hinged to the front part of the tail end of the drill arm mechanism through connecting pin shaft two, hole two at the other end of the L-shaped connecting frame is hinged to the middle part of the drill arm mounting frame through connecting pin shaft four, and hole three of the L-shaped connecting frame is hinged to the cylinder rod of the drill arm lifting oil cylinder through connecting pin shaft five.

[0007] Further, both ends of the drill arm mounting frame are respectively hinged to the rear part of the tail end of the drill arm mechanism and the cylinder body of the drill arm lifting oil cylinder through connecting pin shaft three and swing pin shaft.

[0008] Further, the drill arm mounting frame is arranged on the chassis of the rock drilling jumbo through a rotation driving mechanism. The rotation driving mechanism is arranged on the chassis of the rock drilling jumbo, and the rotation output end of the rotation driving mechanism is fixedly connected to the middle part of the drill arm mounting frame.

[0009] Further, the rotation driving mechanism is a publicly known and commonly used device for providing rotational power. For example: the rotation driving mechanism is a screw hydraulic cylinder. An upper mounting seat and a lower mounting seat are arranged on the chassis of the rock drilling jumbo. Both ends of the rotating shaft of the screw hydraulic cylinder are respectively fixed on the upper mounting seat and the lower mounting seat, and the outer cylinder of the screw hydraulic cylinder rotates around the rotating shaft; the drill arm mounting frame is mounted on the outer cylinder of the screw hydraulic cylinder.

[0010] Further, the drill arm mounting frame is fixed on the outer cylinder of the screw hydraulic cylinder through bolts.

[0011] The drill arm mechanism, the rotation driving mechanism, the screw hydraulic cylinder and the drill arm lifting oil cylinder are all publicly known and commonly used devices in the art.

[0012] During rock drilling operations, the rock drilling jumbo is in the drill arm extended state. The drill arm mechanism is located in front of the chassis of the rock drilling jumbo and can rotate around the rotating shaft with the outer cylinder of the screw hydraulic cylinder to perform rock drilling operations in the roadway.

[0013] When transiting operations are required, the cylinder rod of the drill arm lifting oil cylinder extends, pushing the L-shaped connecting frame to move. The L-shaped connecting frame drives the connecting rod to move, so that the drill arm mechanism rotates in the opposite direction until the drill arm mechanism rotates to directly above the chassis of the rock drilling jumbo. The rock drilling jumbo is in the drill arm folded state. Generally, the length of the folded drill arm of the rock drilling jumbo is less than 4 meters. The cylinder rod of the drill arm lifting oil cylinder retracts, and the rock drilling jumbo is in the drill arm extended state.

[0014] The beneficial effects of the present utility model are: the overall length of the rock drilling jumbo is shortened by the foldable drill arm, without disassembly and assembly. After the drill arm is folded, the rock drilling jumbo can directly enter the lifting cage for transiting operations, saving time and effort. Description of the Drawings

[0015] Figure 1 Schematic diagram of the extended state of the drill arm of the present utility model;

[0016] Figure 2 Schematic diagram of the folded state of the drill arm of the present utility model;

[0017] In the figure: drill arm mechanism 1, connecting pin shaft one 2, connecting rod 3, L-shaped connecting frame 4, connecting pin shaft two 5, connecting pin shaft three 6, drill arm mounting frame 7, upper mounting seat 8, screw hydraulic cylinder 9, lower mounting seat 10, chassis of the rock drilling jumbo 11, connecting pin shaft four 12, drill arm lifting cylinder 13, swing pin shaft 14, connecting pin shaft five 15. Specific embodiments

[0018] The present utility model will be further described below with reference to the accompanying drawings by way of examples.

[0019] A drill arm folding mechanism of a rock drilling jumbo is provided between the chassis 11 of the rock drilling jumbo and the tail end of the drill arm mechanism 1. A drill arm mounting frame 7 is provided on the chassis 11 of the rock drilling jumbo. The two ends of the drill arm mounting frame 7 are respectively hinged to the rear part of the tail end of the drill arm mechanism 1 and the cylinder body of the drill arm lifting cylinder 13; the cylinder rod of the drill arm lifting cylinder 13 is hinged to the middle part of the L-shaped connecting frame 4. The two ends of the L-shaped connecting frame 4 are respectively hinged to one end of the connecting rod 3 and the middle part of the drill arm mounting frame 7. The other end of the connecting rod 3 is hinged to the front part of the tail end of the drill arm mechanism 1. The drill arm mounting frame 7, the L-shaped connecting frame 4, the connecting rod 3 and the tail end of the drill arm mechanism 1 together form a four-bar linkage; when the cylinder rod of the drill arm lifting cylinder 13 retracts and extends, it drives the L-shaped connecting frame 4 and the connecting rod 3 to drive the tail end of the drill arm mechanism 1 to rotate, so as to realize the conversion between the extended state and the folded state of the drill arm.

[0020] Three holes are provided on the L-shaped connecting frame 4, and hole one, hole two and hole three are respectively provided at both ends and the L-shaped inflection point of the L-shaped connecting frame 4; hole four and hole five are respectively provided at both ends of the connecting rod 3. Hole one at one end of the L-shaped connecting frame 4 is hinged to hole four at one end of the connecting rod 3 through the connecting pin shaft one 2. Hole five at the other end of the connecting rod 3 is hinged to the front part of the tail end of the drill arm mechanism 1 through the connecting pin shaft two 5. Hole two at the other end of the L-shaped connecting frame 4 is hinged to the middle part of the drill arm mounting frame 7 through the connecting pin shaft four 12. Hole three of the L-shaped connecting frame 4 is hinged to the cylinder rod of the drill arm lifting cylinder 13 through the connecting pin shaft five 15.

[0021] Both ends of the drill arm mounting frame 7 are respectively hinged to the rear part of the tail end of the drill arm mechanism 1 and the cylinder body of the drill arm lifting cylinder 13 through the connecting pin shaft three 6 and the swing pin shaft 14.

[0022] The drill arm mounting frame 7 is arranged on the chassis 11 of the rock drilling jumbo through a rotation driving mechanism. A rotation driving mechanism is arranged on the chassis 11 of the rock drilling jumbo, and the rotation output end of the rotation driving mechanism is fixedly connected to the middle part of the drill arm mounting frame 7.

[0023] The rotation driving mechanism is a publicly known and commonly used device capable of providing rotational power. For example, the rotation driving mechanism is a screw hydraulic cylinder 9. An upper mounting seat 8 and a lower mounting seat 10 are provided on the chassis 11 of the rock drilling jumbo. Both ends of the rotating shaft of the screw hydraulic cylinder 9 are respectively fixed on the upper mounting seat 8 and the lower mounting seat 10, and the outer cylinder of the screw hydraulic cylinder 9 rotates around the rotating shaft; a boom mounting bracket 7 is installed on the outer cylinder of the screw hydraulic cylinder 9.

[0024] Preferably, the boom mounting bracket 7 is fixed on the outer cylinder of the screw hydraulic cylinder 9 by bolts.

[0025] In this embodiment, referring to the attached Figure 1 and 2 , the upper mounting seat 8 and the lower mounting seat 10 are installed on the chassis 11 of the rock drilling jumbo. The screw hydraulic cylinder 9 is installed between the upper mounting seat 8 and the lower mounting seat 10. The rotating shaft of the screw hydraulic cylinder 9 is fixed on the upper mounting seat 8 and the lower mounting seat 10 and cannot rotate, and the outer cylinder of the screw hydraulic cylinder 9 can rotate left and right around its own rotating shaft; the boom mounting bracket 7 is installed on the outer cylinder of the screw hydraulic cylinder 9 by bolts and is used to install the remaining components. The cylinder body of the boom lifting cylinder 13 is installed at the lower end of the boom mounting bracket 7 through a swing pin 14 and can rotate around the swing pin 14. The cylinder rod of the boom lifting cylinder 13 is hinged to the middle of the L-shaped connecting frame 4 through a connecting pin five 15. The boom lifting cylinder 13 serves as the driving cylinder for the boom mechanism 1 to rotate around the connecting pin three 6; one end of the connecting rod 3 is hinged to one end of the L-shaped connecting frame 4 through a connecting pin one 2, and the other end of the connecting rod 3 is hinged to the front part of the tail end of the boom mechanism 1 through a connecting pin two 5 to transmit the linear power of the cylinder; the rear part of the tail end of the boom mechanism 1 is hinged to the upper end of the boom mounting bracket 7 through a connecting pin three 6 and can rotate around the connecting pin three 6, so that the relative position of the boom mechanism 1 relative to the chassis 11 of the rock drilling jumbo is changed from in front of the chassis 11 of the rock drilling jumbo to above, thereby shortening the overall length dimension of the jumbo.

[0026] During rock drilling operations, the rock drilling jumbo is in the boom extended state, and the boom mechanism 1 is located in front of the chassis 11 of the rock drilling jumbo and can rotate around the rotating shaft with the outer cylinder of the screw hydraulic cylinder 9 to perform rock drilling operations in different directions in the roadway; when it is necessary to perform transfer operations, the cylinder rod of the boom lifting cylinder 13 extends to push the L-shaped connecting frame 4 to rotate around the connecting pin five 15, one end of the L-shaped connecting frame 4 rotates around the connecting pin four 12, and the cylinder body of the boom lifting cylinder 13 swings around the swing pin 14; the movement of the L-shaped connecting frame 4 drives both ends of the connecting rod 3 to rotate around the connecting pin one 2 and the connecting pin two 5 respectively, so that the boom mechanism 1 rotates around the connecting pin three 6 until the boom mechanism 1 rotates to directly above the chassis 11 of the rock drilling jumbo, and the rock drilling jumbo is in the boom folded state.

[0027] When the rock drilling jumbo of the present utility model is in the drill arm extended state, the drill arm mechanism 1 is located in front of the chassis 11 of the rock drilling jumbo (which may be directly in front, left front, right front or obliquely in front), the drill arm mechanism 1 is hinged to the drill arm mounting bracket 7, the drill arm mounting bracket 7 is mounted on the outer cylinder of the screw hydraulic cylinder 9, and the drill arm mechanism 1 can rotate around the rotation axis with the outer cylinder of the screw hydraulic cylinder 9 according to the needs of the rock drilling position; when it is necessary to carry out transfer operation, the drill arm mechanism 1 can first rotate around the rotation axis with the outer cylinder of the screw hydraulic cylinder 9 to the directly front in the horizontal direction of the chassis 11 of the rock drilling jumbo, as Figure 1 shown, and then under the action of the drill arm lifting cylinder 13, the drill arm mechanism 1 flips 180 degrees in the opposite direction and folds from the directly front of the chassis 11 of the rock drilling jumbo to directly above the chassis 11 of the rock drilling jumbo, as Figure 2 shown.

[0028] The drill arm mechanism 1 of the rock drilling jumbo of the present utility model has two states: the drill arm extended state and the drill arm folded state; the rock drilling jumbo in the drill arm extended state is used for rock drilling operations in the roadway; the drill arm folded state is convenient for entering the lifting cage for transfer operation, without disassembling the rock drilling jumbo, can adapt to the space size of the lifting cage, is easy to operate, and saves time and effort.

Claims

1. A drill arm folding mechanism of a drilling rig, arranged between a chassis (11) of the drilling rig and a rear end of the drill arm mechanism (1), characterized in that: A drill arm mounting frame (7) is provided on the drilling trolley chassis (11), and the two ends of the drill arm mounting frame (7) are respectively hinged to the rear of the rear end of the drill arm mechanism (1) and the cylinder body of the drill arm lifting cylinder (13); the cylinder rod of the drill arm lifting cylinder (13) is hinged to the middle of the L-shaped connecting frame (4), and the two ends of the L-shaped connecting frame (4) are respectively hinged to one end of the connecting rod (3) and the middle of the drill arm mounting frame (7), and the other end of the connecting rod (3) is hinged to the front of the rear end of the drill arm mechanism (1), and the drill arm mounting frame (7), the L-shaped connecting frame (4), the connecting rod (3) and the rear end of the drill arm mechanism (1) together form a four-link mechanism; the cylinder rod of the drill arm lifting cylinder (13) retracts and extends, driving the L-shaped connecting frame (4) and the connecting rod (3) to drive the rear end of the drill arm mechanism (1) to rotate, thereby switching between a drill arm extended state and a drill arm folded state.

2. The drill arm folding mechanism of a rock drilling rig according to claim 1, characterized in that: The L-shaped connecting frame (4) is provided with three holes, and the two ends of the L-shaped connecting frame (4) and the L-shaped inflection point are respectively provided with hole 1, hole 2 and hole 3; the two ends of the connecting rod (3) are respectively provided with hole 4 and hole 5, the hole 1 at one end of the L-shaped connecting frame (4) is hinged to the hole 4 at one end of the connecting rod (3) through the connecting pin 1 (2), the hole 5 at the other end of the connecting rod (3) is hinged to the front part of the rear end of the drill arm mechanism (1) through the connecting pin 2 (5), the hole 2 at the other end of the L-shaped connecting frame (4) is hinged to the middle part of the drill arm mounting frame (7) through the connecting pin 4 (12), and the hole 3 of the L-shaped connecting frame (4) is hinged to the cylinder rod of the drill arm lifting cylinder (13) through the connecting pin 5 (15).

3. The drill arm folding mechanism of a rock drilling trolley according to claim 1 or 2, characterized in that: The two ends of the drill arm mounting frame (7) are respectively hinged to the rear of the tail end of the drill arm mechanism (1) and the cylinder body of the drill arm lifting cylinder (13) through the connecting pin shaft three (6) and the swing pin shaft (14).

4. The drill arm folding mechanism of a rock drilling rig according to claim 1, characterized in that: The drill arm mounting frame (7) is arranged on the rock drilling trolley chassis (11) via a rotation drive mechanism. The rotation drive mechanism is arranged on the rock drilling trolley chassis (11), and the rotation output end of the rotation drive mechanism is fixedly connected to the middle part of the drill arm mounting frame (7).

5. The drill arm folding mechanism of a rock drilling trolley according to claim 4, characterized in that: The rotary drive mechanism is a spiral hydraulic cylinder (9), an upper mounting seat (8) and a lower mounting seat (10) are arranged on the rock drilling trolley chassis (11), the two ends of the rotary shaft of the spiral hydraulic cylinder (9) are respectively fixed on the upper mounting seat (8) and the lower mounting seat (10), and the outer cylinder of the spiral hydraulic cylinder (9) rotates around the rotary shaft; and a drill arm mounting frame (7) is installed on the outer cylinder of the spiral hydraulic cylinder (9).

6. The drill arm folding mechanism of a rock drilling rig according to claim 5, characterized in that: The drill arm mounting frame (7) is fixed to the outer cylinder of the spiral hydraulic cylinder (9) by means of bolts.

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