Telescopic main driving structure

Abstract

The invention discloses a telescopic main driving structure which comprises a slideway device, a telescopic device, a fixing device and a driving device, the slideway device comprises a sliding bearing and a bearing fixing ring, the sliding bearing is fixed on the bearing fixing ring, and the bearing fixing ring is fixed on a shield body; the telescopic device comprises an oil cylinder telescopic end, an oil cylinder fixed end and a telescopic oil cylinder fixed seat, the telescopic oil cylinder fixed seat is fixed in the shield body, the oil cylinder fixed end is connected with the telescopic oil cylinder fixed seat, the oil cylinder telescopic end is connected with the driving device, and the outermost ring of the driving device is sleeved with the sliding bearing sleeve; the telescopic end of the oil cylinder can drive the driving device to slide along the sliding bearing; a clamping oil cylinder of the fixing device is respectively connected with the driving device and the shield body; the sliding way device, the telescopic device and the fixing device jointly achieve overall backward movement of the driving device, and the tool changing operation space is increased. The tool changing space is enlarged, the tool changing efficiency of the cutterhead is improved, and the economic cost is saved.

Description

Technical Field

[0001] The invention relates to a telescopic main drive structure, which is applied to the main drive of a shield machine and belongs to the technical field of shield tunneling. Background Art

[0002] As an important equipment for developing underground space, shield excavation technology is becoming more and more mature. With the development of underground space across the country, shield types are diverse. Among them, the representative slurry shield machine is developing in the direction of high water pressure, large diameter and intelligence. The slurry shield machine is safe and reliable, highly mechanized, and has high construction efficiency. However, due to the narrow width of the cutterhead of the slurry shield machine, operators cannot work in the narrow cutterhead space when changing the cutter, making it extremely difficult to change the cutter. In order to solve the above problems, it is necessary to design a retractable main drive structure design. The main drive is moved backward as a whole through the retractable structure to expand the cutter change space and improve the cutterhead tool change efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a retractable main drive structure in view of the defects of the prior art in that the tool changing space of a slurry shield machine is narrow, the tool changing is difficult for operators and the working efficiency is low.

[0004] To solve this technical problem, the present invention provides a telescopic main drive structure, including a slide device, a telescopic device, a fixing device and a driving device, the slide device including a sliding bearing and a bearing fixing ring, the sliding bearing is fixed to the bearing fixing ring by bolts, and the bearing fixing ring is fixed to the shield body by bolts; the telescopic device includes a cylinder telescopic end, a cylinder fixed end and a telescopic cylinder fixing seat, the telescopic cylinder fixing seat is fixed in the shield body, the cylinder fixed end is connected to the telescopic cylinder fixing seat by a hinge, the cylinder telescopic end is connected to the driving device by bolts, and the outermost ring of the driving device is sleeved in the sliding bearing sleeve; the cylinder telescopic end can drive the driving device to slide along the sliding bearing; the fixing device includes a clamping cylinder, which is respectively connected to the driving device and the shield body; the slide device, the telescopic device and the fixing device jointly realize the overall backward movement of the driving device to increase the tool changing operation space.

[0005] The fixing device also includes a clamping cylinder mounting seat, which is fixedly connected to the driving device by welding, the clamping cylinder fixed end is fixedly connected to the clamping cylinder mounting seat, and the clamping cylinder telescopic end is fixed to the shield body by bolts.

[0006] The fixing devices are provided with two groups, which are arranged on the outer side of the shield body in a bilaterally symmetrical manner.

[0007] The slide device also includes a front end pressure ring, a spacer ring and a rear end pressure ring. The front end pressure ring is fixed to the front end of the shield body by bolts, and the rear end pressure ring is fixed to the rear end of the shield body by bolts. The spacer ring is fixed to the rear end of the front end pressure ring by bolts. The front end pressure ring, the spacer ring and the rear end pressure ring provide lubrication and sealing for fixing the sliding track.

[0008] The sliding bearing has a built-in lubricating oil hole to ensure that the driving device slides normally in the sliding bearing.

[0009] The sliding length of the sliding bearing is set to 322 mm, and the three sliding bearings are arranged and connected in sequence to ensure that the maximum sliding distance of the driving device is 966 mm.

[0010] A telescopic seal is arranged between the sliding bearing and the rear end pressure ring to prevent leakage of lubricating oil.

[0011] A telescopic seal is arranged between the sliding bearing and the spacer ring to prevent the leakage of lubricating oil.

[0012] The telescopic devices are provided with 20 groups, which are symmetrically arranged at the rear side of the main drive outer ring to provide power for the telescopic movement of the main drive.

[0013] Beneficial effects: The present invention solves the problem of difficulty in tool changing and low work efficiency for operators. The main drive overall structure is moved backward through the telescopic structure device, which expands the tool changing space, improves the tool changing efficiency of the cutter disc, and saves economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a rear axonometric schematic diagram of the present invention;

[0015] Figure 2 It is a schematic front view of the structure of the present invention;

[0016] Figure 3 For the present invention Figure 2 AA cross-section diagram of ;

[0017] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of part I in the middle.

[0018] In the figure: 1. Clamping cylinder mounting seat; 2. Clamping cylinder; 3. Front end pressure ring; 4. Spacer ring; 5. Telescopic seal; 6. Sliding bearing; 7. Bearing fixing ring; 8. Shield body; 9. Rear end pressure ring; 10. Driving device; 11. Telescopic end of cylinder; 12. Fixed end of cylinder; 13. Telescopic cylinder fixing seat. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 4As shown, the present invention provides a telescopic main drive structure, including a slide device, a telescopic device, a fixing device and a driving device 10, wherein the slide device includes a sliding bearing 6 and a bearing fixing ring 7, wherein the sliding bearing 6 is fixed to the bearing fixing ring 7 by bolts, and the bearing fixing ring 7 is fixed to the shield body 8 by bolts; the telescopic device includes a cylinder telescopic end 11, a cylinder fixed end 12 and a telescopic cylinder fixing seat 13, wherein the telescopic cylinder fixing seat 13 is fixed in the shield body 8 by welding, the cylinder fixed end 12 is connected to the telescopic cylinder fixing seat 13 by a hinge, the cylinder telescopic end 11 is connected to the driving device 10 by bolts, and the cylinder telescopic end 11 is sleeved on the cylinder fixing seat 12. The inner cavity of the end 12 realizes the telescopic function of the cylinder; the outermost ring of the driving device 10 is sleeved in the sliding bearing 6, and the driving device 10 has a telescopic function; the telescopic end 11 of the cylinder can drive the driving device 10 to slide along the sliding bearing 6; the fixing device includes a clamping cylinder 2, and the clamping cylinder 2 is respectively connected to the driving device 10 and the shield body 8; the slide device, the telescopic device and the fixing device jointly realize the overall backward movement of the driving device 10 to increase the tool changing operation space and improve the tool changing efficiency; the slide device realizes the function of the main drive to have the front and rear telescopic function, the telescopic device ensures to provide power for the telescopic of the main drive, and the fixing device provides fixing force for the telescopic main drive.

[0021] The fixing device also includes a clamping cylinder mounting seat 1, which is fixedly connected to the driving device 10 by welding, the fixed end of the clamping cylinder 2 is fixedly connected to the clamping cylinder mounting seat 1 by bolts, and the telescopic end of the clamping cylinder 2 is fixed to the shield body 8 by bolts.

[0022] The fixing device is provided with two groups, which are arranged symmetrically on the outside of the shield body 8, and provide fixing force for the telescopic main drive while taking into account the force balance of the whole mechanism.

[0023] The slide device also includes a front end pressure ring 3, a spacer ring 4 and a rear end pressure ring 9. The front end pressure ring 3 is fixed to the front end of the shield body 8 by bolts, and the rear end pressure ring 9 is fixed to the rear end of the shield body 8 by bolts; the spacer ring 4 is fixed to the rear end of the front end pressure ring 3 by bolts, and the front end pressure ring 3, the spacer ring 4 and the rear end pressure ring 9 provide lubrication and sealing for the fixed sliding track; the slide device ensures that the main drive has the function of telescopic movement forward and backward along the axial direction.

[0024] The sliding bearing 6 has a built-in lubricating oil hole to ensure that the driving device 10 slides normally in the sliding bearing 6 .

[0025] The sliding length of the sliding bearing 6 is set to 322 mm, and three sliding bearings 6 are arranged and connected in sequence to ensure that the maximum sliding distance of the driving device 10 is 966 mm.

[0026] A telescopic seal 5 is provided between the sliding bearing 6 and the rear end pressure ring 9 to prevent leakage of lubricating oil.

[0027] A telescopic seal 5 is provided between the sliding bearing 6 and the spacer ring 4 to prevent leakage of lubricating oil.

[0028] The telescopic devices are provided with 20 groups, which are symmetrically arranged at the rear side of the main drive outer ring to provide power for the telescopic movement of the main drive.

[0029] Working process and working principle of the present invention:

[0030] During the operation of the shield machine, the fixing device composed of the clamping cylinder mounting seat 1 and the clamping cylinder 2 is used to fix the driving device 10 as a whole on the shield body 8 through the telescopic device of the clamping cylinder 2; the two sets of fixing devices are arranged symmetrically on the outside of the shield body 8, which not only provides fixing force for the telescopic main drive, but also takes into account the force balance of the overall mechanism. The telescopic device composed of the telescopic end 11 of the cylinder, the fixed end 12 of the cylinder and the telescopic cylinder fixing seat 13 is fixed on the shield body 8 at the rear end and fixed with the driving device 10 at the front end, and the telescopic function of the telescopic end 11 of the cylinder and the fixed end 12 of the cylinder is used to achieve telescopic function; 20 sets of telescopic devices are symmetrically arranged on the rear side of the outer ring of the main drive to provide power for the telescopic backward movement of the main drive. The slide device includes a front-end pressure ring 3, a spacer ring 4, a telescopic seal 5, a sliding bearing 6, a bearing fixing ring 7, and a rear-end pressure ring 9; the bearing fixing ring 7 fixes the sliding bearing 6 on the shield body 8, and the sliding bearing 6 has a built-in lubricating oil hole to ensure that the drive device 10 slides normally in the sliding bearing 6; the sliding length of the sliding bearing 6 is set to 322mm, and the three sliding bearings 6 are arranged and connected in sequence to ensure that the maximum sliding distance of the drive device 10 is 966mm; a telescopic seal 5 is arranged between the sliding bearing 6 and the rear-end pressure ring 9 to prevent the leakage of lubricating oil; a telescopic seal 5 is arranged between the sliding bearing 6 and the front-end pressure ring 3 and the spacer ring 4 to prevent the leakage of lubricating oil; the slide device ensures that the main drive has a forward and backward telescopic function in the axial direction. When the 20 sets of telescopic devices are telescoped backward, the drive device 10 telescopes backward in the axial direction under the backward driving force of the telescopic device and the lubrication of the slide device, realizing the telescopic function of the drive device 10.

[0031] The present invention solves the problems of narrow tool changing space of the slurry shield machine, difficulty in tool changing for operators and low work efficiency. The main drive is moved backward as a whole through the telescopic structure, the tool changing space is expanded, and the tool changing efficiency of the cutter head is improved.

[0032] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A retractable main drive structure, characterized in that: The invention comprises a slide device, a telescopic device, a fixing device and a driving device (10), wherein the slide device comprises a sliding bearing (6) and a bearing fixing ring (7), wherein the sliding bearing (6) is fixed to the bearing fixing ring (7) by bolts, and the bearing fixing ring (7) is fixed to a shield body (8) by bolts; the telescopic device comprises a telescopic end (11) of an oil cylinder, a fixing end (12) of an oil cylinder and a telescopic oil cylinder fixing seat (13), wherein the telescopic oil cylinder fixing seat (13) is fixed in the shield body (8), and the fixing end (12) of the oil cylinder is connected to the telescopic oil cylinder fixing seat (13) by a hinge. The fixed seat (13) is connected, the telescopic end (11) of the oil cylinder is connected to the driving device (10) by bolts, and the outermost ring of the driving device (10) is sleeved in the sliding bearing (6); the telescopic end (11) of the oil cylinder can drive the driving device (10) to slide along the sliding bearing (6); the fixing device comprises a clamping oil cylinder (2), and the clamping oil cylinder (2) is respectively connected to the driving device (10) and the shield body (8); the slide device, the telescopic device and the fixing device jointly realize the overall backward movement of the driving device (10) to increase the working space for tool changing.

2. The retractable main drive structure according to claim 1, characterized in that: The fixing device also includes a clamping cylinder mounting seat (1), the clamping cylinder mounting seat (1) is fixedly connected to the driving device (10) by welding, the fixed end of the clamping cylinder (2) is fixedly connected to the clamping cylinder mounting seat (1), and the telescopic end of the clamping cylinder (2) is fixed to the shield body (8) by bolts.

3. The retractable main drive structure according to claim 1, characterized in that: The fixing device is provided with two groups, which are arranged on the outer side of the shield body (8) in a bilaterally symmetrical manner.

4. The retractable main drive structure according to claim 1, characterized in that: The slide device also includes a front end pressure ring (3), a spacer ring (4) and a rear end pressure ring (9); the front end pressure ring (3) is fixed to the front end of the shield body (8) by bolts, and the rear end pressure ring (9) is fixed to the rear end of the shield body (8) by bolts; the spacer ring (4) is fixed to the rear end of the front end pressure ring (3) by bolts, and the front end pressure ring (3), the spacer ring (4) and the rear end pressure ring (9) provide lubrication and sealing for fixing the sliding track.

5. The retractable main drive structure according to claim 1, characterized in that: The sliding bearing (6) has a built-in lubricating oil hole to ensure that the driving device (10) slides normally in the sliding bearing (6).

6. The retractable main drive structure according to claim 1, characterized in that: The sliding length of the sliding bearing (6) is set to 322 mm, and the three sliding bearings (6) are arranged and connected in sequence to ensure that the maximum sliding distance of the driving device (10) is 966 mm.

7. The retractable main drive structure according to claim 1, characterized in that: A telescopic seal (5) is provided between the sliding bearing (6) and the rear end pressure ring (9) to prevent leakage of lubricating oil.

8. The retractable main drive structure according to claim 1, characterized in that: A telescopic seal (5) is provided between the sliding bearing (6) and the spacer ring (4) to prevent leakage of lubricating oil.

9. The retractable main drive structure according to any one of claims 1 to 8, characterized in that: The telescopic devices are provided with 20 groups, which are symmetrically arranged at the rear side of the main drive outer ring to provide power for the telescopic movement of the main drive.

Images