Lifting arm sliding mechanism

Abstract

The present invention discloses a lifting arm sliding mechanism, wherein the sliding seat is hinged on the supporting seat of the base, and the two ends of the tower oil cylinder are respectively hinged on the supporting seat and the front end of the sliding seat; the upper end of the sliding seat is provided with a sliding frame, and the two ends of the sliding oil cylinder are respectively hinged to the sliding seat and the sliding frame; the upper end surface of the sliding seat is provided with a matching structure for making the sliding frame slide; the turntable is hinged on the sliding frame, and the two ends of the lifting oil cylinder are respectively hinged on the turntable and the sliding frame. The present invention adopts a double-layer retractable structure, and after the upper and lower layers are contracted, the size is compact and the center of gravity of the equipment is good. During construction, the slide body is lifted by the extension of the tower oil cylinder, and the upper slide is driven to slide and extend outward by the extension of the sliding oil cylinder, so that the same lifting height as the long lifting arm can be obtained, and a larger working elevation angle can be obtained by adjusting the turntable angle on the slide by the lifting oil cylinder, so as to meet more drilling angle requirements, especially suitable for space-constrained working environments such as tunnels.

Description

Technical Field

[0001] The invention relates to the field of drilling equipment for tunnel construction, in particular to an arm lifting and sliding mechanism of a tunnel drilling machine. Background Art

[0002] In tunnel construction, due to the space and height limitations of the tunnel, the boom mechanism on the drilling rig is required to be small in size and have a large range of motion. The long arm of the conventional long-boom tunnel drilling rig has a fixed length and cannot be retracted. The arm's movable angle is small and cannot meet the angle construction requirements of each hole in the narrow space tunnel section. In addition, due to the long boom of the drilling rig and the large size of the whole machine, a larger vehicle is required for transportation. The transportation process requires a larger road space, the transportation cost is high, and the transportation route is limited. Summary of the invention

[0003] Aiming at the drawback of the larger size of the arm sliding mechanism of the existing long arm type tunnel drilling rig, the applicant provides a drilling rig with a reasonable arm sliding mechanism, which adopts a double-layer retractable structure and can meet more drilling angle requirements in a narrow space.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A lifting arm sliding mechanism, wherein a sliding seat is hinged on a supporting seat of a base, and two ends of a tower lifting cylinder are respectively hinged on the supporting seat and the front end of the sliding seat; a sliding frame is arranged on the upper end of the sliding seat, and two ends of the sliding cylinder are respectively hinged to the sliding seat and the sliding frame; a matching structure for enabling the sliding frame to perform sliding motion is arranged on the upper end surface of the sliding seat, and when the sliding cylinder performs telescopic motion, the sliding frame is driven to perform sliding motion along the matching structure; a turntable is hinged on the sliding frame, and two ends of the lifting cylinder are respectively hinged on the turntable and the sliding frame.

[0006] As a further improvement of the above technical solution:

[0007] The matching structure is that a pressing plate is respectively arranged on the left and right sides of the upper end surface of the sliding seat, and sliding grooves are opened on the two end surfaces inside the pressing plate, and the bottom plate of the lower end bracket of the sliding frame is matched in the sliding groove of the pressing plate.

[0008] The pressing plate is fixed to the upper end surface of the sliding seat by fasteners or welding.

[0009] The sliding cylinder is parallel to the sliding track of the sliding frame.

[0010] A second through hole is opened at the rear end of the sliding seat, and shaft sleeves are installed at both ends of the second through hole in a tight fit manner. A first through hole is opened at a corresponding position on the upper side plate of the support seat, and the sliding seat and the support seat are hinged by a second pin shaft installed on the second through hole and the first through hole.

[0011] Baffles are arranged at both ends of the second pin shaft.

[0012] The base can be rotatable.

[0013] The beneficial effects of the present invention are as follows:

[0014] The arm lifting and sliding mechanism of the present invention adopts a double-layer retractable structure. After the upper and lower layers are retracted, the size is compact and the center of gravity of the equipment is good. During construction, the slide body is lifted by the extension of the tower lifting cylinder, and the upper slide is driven to slide outward and extend by the extension of the sliding cylinder, so that the same lifting height as the long arm can be obtained. By adjusting the angle of the turntable on the slide by the lifting cylinder, a larger working elevation angle can be obtained to meet more drilling angle requirements, especially suitable for working environments with limited space such as tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the present invention.

[0016] Figure 2 It is a left view of the present invention.

[0017] Figure 3 for Figure 1 Middle AA section view.

[0018] Figure 4 This is the state where the sliding frame of the present invention is fully extended.

[0019] Figure 5 This is the state in which the sliding frame of the present invention is completely retracted.

[0020] In the figure: 1. turntable; 2. sliding frame; 3. sliding seat; 4. supporting seat; 5. bearing; 6. pressure plate; 7. base; 8. first pin; 9. bushing; 10. second pin; 11. baffle; 12. third pin; 13. support plate; 14. fourth pin; 15. fifth pin; 16. sixth pin; 17. seventh pin; 18. sliding cylinder; 19. lifting cylinder; 20. tower cylinder; 21. support plate; 22. eighth pin; 23. side plate; 24. first through hole; 25. second through hole; 26. oil cup; 27. slide groove; 28. bracket bottom plate. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0022] For ease of explanation, Figure 1 In the main view, the left end is the front end and the right end is the back end.

[0023] like Figure 1As shown, the arm lifting and sliding mechanism of the present invention is installed on the movable chassis of the drilling rig through a rotatable base 7, the rear end of the sliding seat 3 is hinged on the support seat 4 of the base 7 through the second pin shaft 10, the front end of the sliding seat 3 is hinged with the piston rod of the tower oil cylinder 20 through the third pin shaft 12, and the rear cylinder seat of the tower oil cylinder 20 is hinged with the support plate 13 on the side of the support seat 4 through the first pin shaft 8. When the tower oil cylinder 20 is extended, the sliding seat 3 can rotate with the second pin shaft 10 at its rear end as the center of the circle, and its front end is lifted. The rear end of the sliding seat 3 is hinged with the rear cylinder seat of the sliding cylinder 18 through the sixth pin shaft 16, and the piston rod of the sliding cylinder 18 is hinged with the sliding frame 2 installed on the upper end of the sliding seat 3 through the seventh pin shaft 17. When the sliding cylinder 18 performs telescopic movement, it can drive the sliding frame 2 to perform telescopic sliding movement, and the sliding cylinder 18 is parallel to the sliding track of the sliding frame 2. The front end of the sliding frame 2 is hinged to the support plate 21 at the lower end of the rotating disk 1 through the eighth pin 22; the rear end of the support plate 21 is hinged to the piston rod of the lifting cylinder 19 through the fifth pin 15, and the rear cylinder seat of the lifting cylinder 19 is hinged to the upper part of the rear end of the sliding frame 2 through the fourth pin 14. When the lifting cylinder 19 is extended and retracted, the rotating disk 1 can rotate with the eighth pin 22 as the center. The rotating disk 1 can rotate at the top of the support plate 21.

[0024] like Figure 1 As shown, a sliding oil cylinder 18 is provided on the sliding seat 3, and the rear cylinder seat of the sliding oil cylinder 18 is installed at its rear end near the support seat 4 through the sixth pin shaft 16; the piston rod of the sliding oil cylinder 18 is hinged to the support seat 5 on the lower end surface of the sliding frame 2 through the seventh pin shaft 17. Figure 1 and Figure 2 As shown, the upper end surface of the sliding seat 3 is provided with a matching structure that enables the sliding frame 2 to slide. At least one fixed pressing plate 6 is provided on the left and right sides of the upper end surface of the sliding seat 3. The inner two end surfaces of the pressing plate 6 are provided with sliding grooves 27. The bracket bottom plate 28 at the lower end of the sliding frame 2 is matched in the sliding groove 27 of the pressing plate 6 and can slide forward and backward along the sliding groove 27. At least one oil cup 26 is provided on the pressing plate 6 to provide lubrication for the sliding groove 27 and reduce the sliding friction between the bracket bottom plate 28 and the sliding groove 27. Figure 1 and Figure 3 As shown, a second through hole 25 is opened at the rear end of the sliding seat 3, and the sleeve 9 is installed at both ends of the second through hole 25 in an interference fit manner. A first through hole 24 is opened at a corresponding position on the upper side plate 23 of the support seat 4. The sliding seat 3 and the support seat 4 are hinged by a second pin shaft 10 installed on the second through hole 25 and the first through hole 24. Baffles 11 are set at both ends of the second pin shaft 10 for axial positioning by fixing with screws.

[0025] The actual working process of the present invention is described in detail below.

[0026] When the sliding oil cylinder 18 of the present invention is in the extended state, Figure 4As shown, the tower lifting cylinder 20 is extended, the sliding seat 3 rotates around the second pin shaft 10 at the rear end, and the sliding cylinder 18 is extended, driving the sliding frame 2 to slide and extend outward along the sliding groove 27 of the pressure plate 6 fixed on the sliding seat 3, so that the sliding seat 3 can obtain a larger lifting height, and the working angle of the turntable 1 is adjusted by the telescopic movement of the lifting cylinder 19, and the angle of the drilling tool installed on the turntable 1 is adjusted to obtain a suitable drilling angle.

[0027] When the sliding oil cylinder 18 of the present invention is in the contracted state, Figure 5 As shown, when the tunnel working space is narrow, the sliding cylinder 18 is retracted to drive the sliding frame 2 to slide and retract inward along the slide groove 27, the lifting height of the sliding seat 3 is reduced, and then the angle of the turntable 1 is adjusted by the lifting cylinder 19. In the narrow tunnel space, the drilling rig can obtain a larger working elevation angle and meet more drilling angle requirements.

[0028] When the drilling rig is transported, the sliding cylinder 18, the lifting cylinder 19 and the tower lifting cylinder 20 of the arm sliding mechanism are all retracted, and the overall transportation size of the equipment is small, so it can be transported by a relatively small vehicle, and the road space requirement during the transportation process is reduced, thereby reducing transportation costs.

[0029] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. An arm lifting and sliding mechanism, characterized in that: The sliding seat (3) is hinged on the support seat (4) of the base (7), and the two ends of the tower lifting cylinder (20) are respectively hinged on the support seat (4) and the front end of the sliding seat (3). When the tower lifting cylinder (20) is extended, the sliding seat (3) is rotated and lifted around the hinge point between it and the support seat (4). The upper end of the sliding seat (3) is provided with a sliding frame (2), and the two ends of the sliding cylinder (18) are respectively hinged to the sliding seat (3) and the sliding frame (2). The upper end surface of the sliding seat (3) is provided with a matching structure for making the sliding frame (2) slide. When the sliding cylinder (18) performs a telescopic movement, it drives the sliding frame (2) to slide along this matching structure. The matching structure is: a pressure plate (6) is respectively provided on the left and right sides of the upper end surface of the sliding seat (3), and a slide groove (27) is opened on the inner two end surfaces of the pressure plate (6). (2) The bottom plate (28) of the lower bracket is fitted in the slide groove (27) of the pressure plate (6); at least one oil cup (26) is provided on the pressure plate (6) to provide lubrication for the slide groove (27); the turntable (1) is hinged on the sliding frame (2); the two ends of the lifting cylinder (19) are respectively hinged on the turntable (1) and the sliding frame (2); when the lifting cylinder (19) performs telescopic movement, the turntable (1) rotates around the hinge point between it and the sliding frame (2); a second through hole (25) is formed at the rear end of the sliding seat (3); shaft sleeves (9) are installed at both ends of the second through hole (25) in a tight fit manner; a first through hole (24) is formed at a corresponding position on the upper side plate (23) of the support seat (4); the sliding seat (3) and the support seat (4) are hinged via a second pin (10) installed on the second through hole (25) and the first through hole (24).

2. The arm lifting and sliding mechanism according to claim 1, characterized in that: The pressing plate (6) is fixed to the upper end surface of the sliding seat (3) by means of fasteners or welding.

3. The arm lifting and sliding mechanism according to claim 1, characterized in that: The sliding oil cylinder (18) is parallel to the sliding track of the sliding frame (2).

4. The arm lifting and sliding mechanism according to claim 1, characterized in that: Baffles (11) are provided at both ends of the second pin shaft (10).

5. The arm lifting and sliding mechanism according to claim 1, characterized in that: The base (7) can rotate.

Images