A TBM support system

Abstract

The present invention relates to the field of tunnel support technology, and specifically to a TBM support system. The TBM support system includes an arch frame installer, a concrete sprayer and an anchor drill, and the TBM support system also includes a rear supporting trailer, on which a moving seat and an axial driving device for driving the moving seat to reciprocate along the axial direction of the tunnel are provided; a circumferential driving device is provided on the moving seat, and the arch frame installer, the concrete sprayer and the anchor drill are arranged on the moving seat through the circumferential driving device, and the circumferential driving device is used to drive the arch frame installer, the concrete sprayer and the anchor drill to reciprocate along the circumference of the tunnel. Since the arch frame installer, the concrete sprayer and the anchor drill share the moving seat and the circumferential driving device in the above design, the overall structure is relatively simple and compact; and there is no need to worry about interference between the arch frame installer, the concrete sprayer and the anchor drill during movement, thereby ensuring the safe operation of the support system.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, and in particular to a TBM support system. Background Art

[0002] During the excavation construction of a full-face hard rock tunnel boring machine (TBM), initial support is required to prevent the surrounding rock from collapsing. The initial support system generally includes an anchor drill, an arch installer, and a concrete sprayer. For example, a multifunctional rock tunnel boring machine support system disclosed in a Chinese invention patent application with application publication number CN110284895A includes a shield and a main beam arranged at the rear side of the shield, and an arch installer, a concrete sprayer, and an anchor drill are arranged on the main beam in sequence.

[0003] In the above patent, the arch installer, concrete sprayer and anchor drill slide on the main beam in the front-to-rear direction through their own curved tracks, and the overall structure is relatively complex; and in order to avoid interference between the arch installer, concrete sprayer and anchor drill during movement, high requirements are placed on the control system. Summary of the invention

[0004] The object of the present invention is to provide a TBM support system to solve the problem in the prior art that the arch installer, concrete sprayer and anchor drill of the support system slide on the main beam in the front and rear directions through their own arc tracks, resulting in a relatively complex overall structure.

[0005] To achieve the above-mentioned purpose, the technical solution of the TBM support system of the present invention is:

[0006] The TBM support system comprises an arch installer, a concrete sprayer and an anchor drill. The TBM support system also comprises a rear supporting trailer, on which a moving seat and an axial driving device for driving the moving seat to reciprocate along the axial direction of the tunnel are arranged; the moving seat is provided with a circumferential driving device, and the arch installer, the concrete sprayer and the anchor drill are arranged on the moving seat through the circumferential driving device, and the circumferential driving device is used to drive the arch installer, the concrete sprayer and the anchor drill to reciprocate along the circumference of the tunnel.

[0007] The beneficial effect is as follows: in the present invention, the arch installer, concrete sprayer and anchor drill are arranged on a movable seat through a circumferential drive device, and the movable seat reciprocates along the axial direction of the tunnel on the rear supporting trailer, so that the arch installer, concrete sprayer and anchor drill rotate reciprocatingly along the circumference of the tunnel through the circumferential drive device and reciprocate along the axial direction of the tunnel through the axial drive device to meet the support requirements. Since the arch installer, concrete sprayer and anchor drill share the movable seat and the circumferential drive device in the above design, the overall structure is relatively simple and compact; and there is no need to worry about the arch installer, concrete sprayer and anchor drill interfering with each other during the movement, thereby ensuring the safe operation of the support system. In addition, since there is no main beam in the support system, the anchor drill can drive the anchor into the tunnel wall in a direction perpendicular to the tangent of the tunnel wall to ensure the stability of the support.

[0008] As a further improvement, with the tunnel axis as the front-to-back direction, the circumferential drive device has a front output end and a rear output end, the arch installer and the anchor drill are connected to the front output end, and the concrete sprayer is connected to the rear output end.

[0009] The beneficial effect is that compared with setting the arch installer, concrete sprayer and anchor drill on one output end, setting two output ends can not only balance the force acting on the circumferential drive device, but also facilitate the arrangement of the arch installer, concrete sprayer and anchor drill on the circumferential drive device.

[0010] As a further improvement, a front partition for separating the concrete sprayer from the arch installer and the anchor drill is provided on the movable seat in front of the concrete sprayer.

[0011] The beneficial effect is that such a design can prevent the concrete sprayed by the concrete sprayer from affecting the arch installer and the anchor drill.

[0012] As a further improvement, a rear partition is provided on the rear supporting trailer or the mobile seat at the rear of the concrete sprayer.

[0013] The beneficial effect is that such a design can prevent the concrete sprayed by the concrete sprayer from affecting the devices or equipment behind it.

[0014] As a further improvement, the circumferential drive device is a swing cylinder.

[0015] The beneficial effects are: the swing oil cylinder has a simple structure, is an existing mature product, and is easy to obtain.

[0016] As a further improvement, a portal frame is connected between the front output end and the rear output end, the arch frame installer and the anchor drill are connected to the front output end through the portal frame, and the concrete sprayer is connected to the rear output end through the portal frame.

[0017] The beneficial effect is that such a design makes the forces on the two output ends of the circumferential drive device tend to be consistent when the circumferential drive device is working, thereby extending the service life of the circumferential drive device.

[0018] As a further improvement, the arch installer is fixed on the anchor drilling rig, a radial drive device is connected to the front output end, and the arch installer and the anchor drilling rig are connected to the front output end through the radial drive device.

[0019] The beneficial effect is that such a design enables the arch installer and the anchor drill to share the radial drive device, which is conducive to simplifying the structure.

[0020] As a further improvement, the radial drive device is a radial telescopic cylinder or a radial electric push rod.

[0021] The beneficial effect is that the radial telescopic cylinder or the radial electric push rod is an existing mature product and is easy to obtain.

[0022] As a further improvement, the movable seat is provided with rollers, and the movable seat is assembled on the rear supporting trailer by moving along the axial direction of the tunnel through the rollers.

[0023] The beneficial effect is that such a design can reduce friction and facilitate the reciprocating movement of the moving seat along the axial direction of the tunnel.

[0024] As a further improvement, the rear-end trailer includes a trailer body and a frame fixed on the trailer body, and two groups of frames are arranged at intervals along the width direction of the tunnel. Each group of frames is provided with a grooved track extending along the axial direction of the tunnel and cooperating with the rollers for rolling, and the openings of the grooved tracks on the two groups of frames are arranged opposite to or back to back.

[0025] The beneficial effect is that the concrete sprayed by the concrete sprayer and rebounded on the hole wall is not easy to fall into the groove track. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the TBM support system of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the cross section at the middle anchor drilling rig;

[0028] Figure 3 for Figure 1 A schematic cross-sectional view of the middle arch mount;

[0029] Figure 4 for Figure 1 Schematic diagram of the cross section at the concrete sprayer.

[0030] In the figure: 11, trailer body; 12, axial telescopic cylinder; 13, upright frame; 14, grooved track; 15, moving seat; 16, swing cylinder; 17, radial telescopic cylinder; 18, front side plate; 19, anchor drilling rig; 20, transmission block; 21, arch frame installer; 22, connecting plate; 23, front partition; 24, rear side plate; 25, concrete sprayer; 26, rear partition; 27, roller; 28, arch frame; 29, anchor; 30, avoidance space. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms such as "first" and "second" and other relational terms that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. In addition, the terms "front", "back", "up", "down", "left" and "right" are based on the orientation and positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention, rather than indicating that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0034] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0035] Embodiment 1 of the TBM support system of the present invention:

[0036] like Figures 1 to 4 As shown, the TBM support system includes a rear supporting trailer and a mobile base 15 that reciprocates on the rear supporting trailer, and the mobile base 15 is provided with an anchor drill 19, an arch frame installer 21 and a concrete sprayer 25. Among them, the anchor drill 19, the arch frame installer 21 and the concrete sprayer 25 are all existing mature products and will not be described in detail here.

[0037] The rear supporting trailer moves in the tunnel in the forward and backward direction. The rear supporting trailer includes a trailer body 11 and a stand 13 fixed on the trailer body 11. Two groups of stands 13 are arranged at intervals along the left and right directions of the rear supporting trailer. Each group of stands 13 is provided with a groove track 14 extending along the forward and backward directions of the rear supporting trailer. The openings of the groove tracks 14 on the two groups of stands 13 are arranged oppositely. This design makes it difficult for the concrete sprayed by the concrete sprayer 25 and rebounded on the tunnel wall to fall into the groove track 14.

[0038] like Figure 2 As shown, rollers 27 are respectively provided on the left and right sides of the moving seat 15, and the rollers 27 are rollingly assembled in the grooved track 14, so that the moving seat 15 can be moved and assembled on the stand 13 along the front and rear direction. The stand 13 is provided with an axial telescopic cylinder 12 for driving the moving seat 15 to reciprocate on the stand 13 along the axial direction of the tunnel, and the axial telescopic cylinder 12 constitutes an axial driving device. In other embodiments, the axial driving device can be an axial electric push rod.

[0039] In this embodiment, a circumferential driving device is provided on the moving seat 15. Preferably, the circumferential driving device is a swing oil cylinder 16, which has a front output end and a rear output end, the arch frame installer 21 and the anchor drill 19 are connected to the front output end, and the concrete sprayer 25 is connected to the rear output end, and the arch frame installer 21, the concrete sprayer 25 and the anchor drill 19 are driven by the swing oil cylinder 16 to reciprocate along the circumference of the tunnel.

[0040] like Figure 1 As shown, a portal frame is connected between the front output end and the rear output end of the swing oil cylinder 16, and the portal frame includes a front side plate 18, a rear side plate 24 and a connecting plate 22. The arch frame installer 21 and the anchor drill 19 are connected to the front output end through the front side plate 18, and the concrete sprayer 25 is connected to the rear output end through the rear side plate 24. The front side plate 18 and the rear side plate 24 are connected by the connecting plate 22, so that the forces on the two output ends of the swing oil cylinder 16 tend to be consistent when the swing oil cylinder 16 is working, thereby extending the service life of the swing oil cylinder 16.

[0041] like Figures 1 to 3 As shown, a radial telescopic cylinder 17 is fixed on the front side plate 18, and the radial telescopic cylinder 17 constitutes a radial drive device. In other embodiments, the radial drive device can be a radial electric push rod.

[0042] In this embodiment, a transmission block 20 is fixed to the rear side of the anchor drill 19, the driving end of the radial telescopic cylinder 17 is connected to the transmission block 20, and the arch frame installer 21 is fixed to the transmission block 20. When the radial telescopic cylinder 17 is extended or retracted, the anchor drill 19 and the arch frame installer 21 can be driven to move together. Among them, the arch frame installer 21 is located behind the anchor drill 19, and the anchor 29 is driven first and then the arch frame 28 is installed. In other embodiments, the arch frame installer can be located directly above the anchor drill 19, and the arch frame is installed first and then the anchor is driven.

[0043] In this embodiment, in order to ensure the stability of the anchor drilling rig 19, a guiding structure is provided between the cylinder body of the radial telescopic cylinder 17 and the anchor drilling rig 19. For example, a guide rail extending radially along the tunnel can be provided on the cylinder body, and a guide groove extending radially along the tunnel can be provided on the anchor drilling rig. The guide groove is adapted to the guide rail, and the guide groove and the guide rail together constitute a guiding structure.

[0044] like Figure 1 and Figure 4 As shown, a front partition 23 is provided on the movable seat 15, and the front partition 23 is located between the concrete sprayer 25 and the arch mounter 21, and is used to separate the concrete sprayer 25 from the arch mounter 21 and the anchor drill 19, so as to prevent the concrete sprayed by the concrete sprayer 25 from affecting the arch mounter 21 and the anchor drill 19. Among them, an escape space 30 for escaping the connecting plate 22 is also provided between the front partition 23 and the movable seat 15.

[0045] In this embodiment, a rear partition plate 26 is provided on the trailer body 11 at the rear of the concrete sprayer 25. This design prevents the concrete sprayed by the concrete sprayer 25 from affecting the devices or equipment behind it.

[0046] During the TBM excavation process, when encountering broken surrounding rock that needs to be supported, the axial telescopic cylinder 12 can be used to move the mobile seat 15 relative to the rear supporting trailer along the front and rear directions of the tunnel until the anchor drill 19 reaches the specified position, and the radial telescopic cylinder 17 can ensure that the anchor drill 19 is pressed against the tunnel wall to meet the operation requirements of the anchor drill 19. Among them, the swing cylinder 16 can be used to swing the anchor drill 19 in the circumferential direction of the tunnel to meet the needs of circumferential anchoring. Afterwards, the arch frame 28 is manually placed on the arch frame installer 21, and the arch frame 28 is connected to the arch frame installer 21 by bolts, and the arch frame 28 is moved to the specified position by the axial telescopic cylinder 12, and then the radial telescopic cylinder 17 is used to press the arch frame 28 against the tunnel wall, and the bolts between the arch frame 28 and the arch frame installer 21 are removed, and the arch frame 28 is fixed to the tunnel wall by the anchor rod 29 to achieve the installation of the arch frame 28. Among them, the arch frame installer 21 can be swung in the tunnel circumferentially through the swing cylinder 16 to meet the needs of circumferentially installing the arch frame 28. Finally, the spraying equipment carried by the TBM is connected to the concrete sprayer 25, and the concrete sprayer 25 is moved along the axial direction of the tunnel through the axial telescopic cylinder 12, and the concrete sprayer 25 is moved along the circumferential direction of the tunnel through the swing cylinder 16 to meet the needs of concrete spraying.

[0047] The TBM support system of the present invention is a support system that integrates multiple supports such as anchor support, steel arch installation, mixed soil injection, etc. It has a compact structure and low cost. It can realize the joint work of multiple support methods, enhance the adaptability of TBM to broken strata, realize timely closure of surrounding rocks, and improve TBM excavation efficiency.

[0048] Embodiment 2 of the TBM support system of the present invention:

[0049] The difference between this embodiment and embodiment 1 is that in embodiment 1, the swing oil cylinder has a front output end and a rear output end, the arch installer and the anchor drill are connected to the front output end through the front side plate, and the concrete sprayer is connected to the rear output end through the rear side plate. In this embodiment, the swing oil cylinder only has a front output end and no rear side plate is provided, the arch installer and the anchor drill are connected to the front output end through the front side plate, and the concrete sprayer is connected to the front output end through the connecting plate.

[0050] Embodiment 3 of the TBM support system of the present invention:

[0051] The difference between this embodiment and embodiment 1 is that in embodiment 1, a rear baffle is provided on the trailer body behind the concrete sprayer. In this embodiment, the length of the moving seat in the axial direction of the tunnel is longer, and the rear baffle is provided on the moving seat.

[0052] Embodiment 4 of the TBM support system of the present invention:

[0053] The difference between this embodiment and embodiment 1 is that in embodiment 1, the circumferential drive device is a swing cylinder having a front output end and a rear output end. In this embodiment, a rotating shaft extending in the front-to-back direction is rotatably mounted on the moving seat, the rotating shaft having a front output end and a rear output end, a driven wheel is arranged on the rotating shaft, and a driving motor is also arranged on the moving seat, a driving wheel is arranged on the output shaft of the driving motor, and the driving wheel is connected to the driven wheel in a transmission manner. In other embodiments, the axial drive device can be a motor with dual output ends.

[0054] Embodiment 5 of the TBM support system of the present invention:

[0055] The difference between this embodiment and embodiment 1 is that in embodiment 1, a door frame is connected between the front output end and the rear output end, and the door frame includes a front side plate, a rear side plate and a connecting plate, and the connecting plate is connected between the front side plate and the rear side plate. In this embodiment, no connecting plate is provided between the front side plate and the rear side plate.

[0056] Embodiment 6 of the TBM support system of the present invention:

[0057] The difference between this embodiment and embodiment 1 is that in embodiment 1, one radial telescopic cylinder is provided, and the arch installer and the anchor drill are connected to the front output end through the radial telescopic cylinder. In this embodiment, two radial telescopic cylinders are provided, and the arch installer and the anchor drill are connected to the front output end through their respective radial telescopic cylinders.

[0058] Embodiment 7 of the TBM support system of the present invention:

[0059] The difference between this embodiment and embodiment 1 is that in embodiment 1, a roller is provided on the movable seat, and the movable seat is assembled on the stand by the roller. In this embodiment, a slider is provided on the movable seat, and the movable seat is assembled on the stand by the slider.

[0060] Embodiment 8 of the TBM support system of the present invention:

[0061] The difference between this embodiment and embodiment 1 is that in embodiment 1, the openings of the grooved tracks on the two sets of stands are arranged opposite to each other. In this embodiment, the openings of the grooved tracks on the two sets of stands are arranged opposite to each other. In other embodiments, the openings of the grooved tracks on the two sets of stands can both be arranged upward.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. TBM support system, without mainframe beam setting, including arch installer, concrete sprayer and anchor drill, It is characterized in that The TBM support system also includes a rear supporting trailer, which is provided with a moving seat and an axial driving device for driving the moving seat to reciprocate along the axial direction of the tunnel; the moving seat is provided with a circumferential driving device, and the arch frame installer, concrete sprayer and anchor drilling rig are arranged on the moving seat through the circumferential driving device, and the circumferential driving device is used to drive the arch frame installer, concrete sprayer and anchor drilling rig to reciprocate along the circumference of the tunnel.

2. The TBM support system according to claim 1, It is characterized in that With the tunnel axis as the front-to-back direction, the circumferential drive device has a front output end and a rear output end, the arch installer and the anchor drill are connected to the front output end, and the concrete sprayer is connected to the rear output end.

3. The TBM support system according to claim 2, It is characterized in that A front partition plate for separating the concrete sprayer from the arch mounter and the anchor drill is arranged on the movable seat in front of the concrete sprayer.

4. The TBM support system according to claim 3, It is characterized in that The rear supporting trailer or the mobile seat is provided with a rear partition plate at the rear of the concrete sprayer.

5. The TBM support system according to any one of claims 1 to 4, It is characterized in that The circumferential driving device is a swing cylinder.

6. The TBM support system according to any one of claims 2 to 4, It is characterized in that A portal frame is connected between the front output end and the rear output end, an arch frame installer and an anchor drill are connected to the front output end through the portal frame, and a concrete sprayer is connected to the rear output end through the portal frame.

7. The TBM support system according to any one of claims 2 to 4, It is characterized in that The arch frame installer is fixed on the anchor drilling machine, and a radial driving device is connected to the front output end. The arch frame installer and the anchor drilling machine are connected to the front output end through the radial driving device.

8. The TBM support system according to claim 7, It is characterized in that The radial driving device is a radial telescopic cylinder or a radial electric push rod.

9. The TBM support system according to any one of claims 1 to 4, It is characterized in that The moving seat is provided with rollers, and the moving seat is moved axially along the tunnel through the rollers and assembled on the rear supporting trailer.

10. The TBM support system according to claim 9, It is characterized in that The rear-end trailer includes a trailer body and a frame fixed on the trailer body. Two groups of frames are arranged at intervals along the width direction of the tunnel. Each group of frames is provided with a grooved track extending along the axial direction of the tunnel and cooperating with the rollers for rolling. The openings of the grooved tracks on the two groups of frames are arranged opposite to or back to back.

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