Roll-over stand for large-diameter shield segment prefabricated part

Abstract

The utility model relates to the technical field of pipe piece prefabricated part overturning frames, in particular to a large-diameter shield pipe piece prefabricated part overturning frame which comprises a supporting frame, a feeding port is formed in the front end of the supporting frame, and a driving mechanism is arranged in the supporting frame. The driving mechanism comprises an overturning frame, the overturning frame is rotationally connected to the interior of the supporting frame, a placement opening is formed in the front end of the overturning frame, driving rods are fixedly installed at the two ends of the outer wall of the overturning frame, the ends, penetrating out of the overturning frame, of the driving rods are connected with rotating motors, and a driving motor is embedded in one side of the driving rod on the outer wall of the overturning frame; and the power output end of the driving motor is connected with a two-way screw rod, the outer wall of the end, penetrating into the overturning frame, of the two-way screw rod is slidably connected with a sliding plate, the duct piece is conveniently pushed and overturned, meanwhile, the situation of loosening and shifting cannot occur in the overturning process, and the situation that manual auxiliary pressing is large in dangerousness is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of precast tunnel segment turning frames, and in particular to a turning frame for precast large-diameter shield tunnel segments. Background Technology

[0002] Tunnel boring machine (TBM) segments are the main assembly components in TBM construction, serving as the inner barrier of the tunnel and bearing the responsibility of resisting soil pressure. During the production process or before leaving the factory, the segments need to be changed from vertical to horizontal or vice versa to facilitate lifting and loading by hoisting equipment. In short, during the manufacturing process and subsequent construction, the heavy TBM segments need to be rotated 90°, thus requiring a rotation mechanism for assistance.

[0003] In existing technologies, the flipping machine generally uses a hydraulic cylinder as the power end to flip the segments. Although the hydraulic cylinder has high working efficiency, it cannot maintain its position when the oil circuit is depressurized, which may lead to the segment falling and causing injury.

[0004] An existing patent (publication number: CN216005138U) discloses a shield tunnel segment flipping device. The tunnel segment is placed on a support frame, and the support frame and the tunnel segment are flipped through gear meshing. The small gear drives the driven device. The device is labor-saving, has a simple overall structure, and is easy to maintain. It solves the problems of unsafe hydraulic cylinders, numerous hydraulic station components, and large workload for transportation and maintenance.

[0005] To address the aforementioned issues, existing patents offer solutions that achieve a flipping effect through gear meshing. However, since there is no corresponding limiting and clamping mechanism for the segments during the flipping process, they tend to sway, requiring manual assistance and resulting in high labor intensity. Summary of the Invention

[0006] The purpose of this utility model is to provide a tilting frame for prefabricated components of large-diameter shield tunnel segments, which can solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flipping frame for prefabricated components of large-diameter shield tunnel segments, including a support frame, wherein a feed inlet is provided at the front end of the support frame, and a drive mechanism is provided inside the support frame;

[0008] The driving mechanism includes a tilting frame, which is rotatably connected to the inside of the support frame. The tilting frame has a mounting opening at its front end. Drive rods are fixedly installed at both ends of the outer wall of the tilting frame. A rotating motor is connected to one end of the drive rod that extends out of the tilting frame. A drive motor is embedded on one side of the drive rod on the outer wall of the tilting frame. A bidirectional screw is connected to the power output end of the drive motor. A sliding plate is slidably connected to one end of the bidirectional screw that extends into the outer wall of the tilting frame.

[0009] Preferably, the tilting frame forms a rotating structure with the support frame via a drive rod, and a sliding structure is formed between the tilting frame and the sliding plate.

[0010] Preferably, a groove is provided at the lower interior of the mounting opening, and a locking block is slidably connected inside the groove.

[0011] Preferably, a support platform is fixedly installed at the front end of the support frame, and a support block is embedded at the top of the support platform.

[0012] Preferably, a limiting mechanism is provided on the outside of the drive rod. The limiting mechanism includes a sleeve, which is fixedly installed on the outside of the drive rod, and a collar is sleeved on the outside of the sleeve.

[0013] Preferably, the limiting mechanism further includes a placement groove, which is disposed between the sleeve and the collar, and a ball bearing is slidably connected inside the placement groove, and placement blocks are fixedly installed on both sides of the outer wall of the collar.

[0014] Preferably, the sleeve and the ball are in close contact, and the ball and the sleeve form a rotating structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Through the support frame, feed port, tilting frame, placement port, drive rod, rotating motor, drive motor, double screw and sliding plate, and in conjunction with the slide groove, clamping block, bearing platform and support block, the tube segment can be easily pushed and tilted, while ensuring that it does not loosen or shift during the tilting process, avoiding the greater danger of manual assistance pressing;

[0017] 2. The ball bearing is formed by sleeve, collar, mounting groove and ball, which can maintain the smoothness of the drive rod rotation process, and the mounting block is fixed inside the support frame to maintain the stability of rotation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention;

[0020] Figure 2 This is a schematic diagram of the drive rod of this utility model;

[0021] Figure 3 For the present utility model Figure 2 Enlarged view of A in the middle;

[0022] Figure 4 This is a schematic diagram of the sliding plate of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Support frame; 2. Feed inlet; 3. Drive mechanism; 301. Tilting frame; 302. Mounting port; 303. Drive rod; 304. Rotary motor; 305. Drive motor; 306. Bidirectional screw; 307. Sliding plate; 4. Slide groove; 5. Locking block; 6. Bearing platform; 7. Support block; 8. Limiting mechanism; 801. Sleeve; 802. Collar; 803. Mounting groove; 804. Ball bearing; 805. Mounting block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 4 A tilting frame for prefabricated shield tunnel segments includes a support frame 1 with a feed inlet 2 at its front end. A drive mechanism 3 is installed inside the support frame 1. The drive mechanism 3 includes a tilting frame 301 rotatably connected to the inside of the support frame 1. A mounting opening 302 is provided at the front end of the tilting frame 301. Drive rods 303 are fixedly installed at both ends of the outer wall of the tilting frame 301. One end of the drive rod 303 protruding from the tilting frame 301 is connected to a rotary motor 304. A component is embedded on one side of the drive rod 303 on the outer wall of the tilting frame 301. There is a drive motor 305, and the power output end of the drive motor 305 is connected to a bidirectional screw 306. The bidirectional screw 306 passes through the outer wall of one end of the flipping frame 301 and is slidably connected to a sliding plate 307. The flipping frame 301 forms a rotating structure with the support frame 1 through the drive rod 303. The flipping frame 301 and the sliding plate 307 form a sliding structure. A sliding groove 4 is opened in the lower part of the placement port 302. A locking block 5 is slidably connected inside the sliding groove 4. A bearing platform 6 is fixedly installed at the front end of the support frame 1. A support block 7 is embedded in the top of the bearing platform 6.

[0028] By adopting the above technical solution, firstly, under the support of the bearing platform 6 and the support block 7, the tube segment enters the support frame 1 through the feed port 2, and then enters the tilting frame 301 through the placement port 302. Subsequently, the drive motor 305 drives the bidirectional screw 306, which in turn drives the sliding plate 307, which is threadedly connected to the bidirectional screw 306, to drive the locking block 5 to slide stably along the sliding groove 4. This can achieve a limiting effect to prevent the tube segment from loosening and shaking. Both the locking block 5 and the support block 7 are equipped with rollers to improve the smoothness of the sliding process. Finally, the rotation motor 304 drives the drive rod 303 to rotate the tilting frame 301, thereby raising the placement port 302 to facilitate hoisting.

[0029] Specifically, such as Figure 2 As shown, a limiting mechanism 8 is provided on the outside of the drive rod 303. The limiting mechanism 8 includes a sleeve 801, which is fixedly installed on the outside of the drive rod 303. A collar 802 is sleeved on the outside of the sleeve 801. The limiting mechanism 8 also includes a mounting groove 803, which is located between the sleeve 801 and the collar 802. A ball bearing 804 is slidably connected inside the mounting groove 803. Mounting blocks 805 are fixedly installed on both sides of the outer wall of the collar 802. The sleeve 801 and the ball bearing 804 are tightly fitted together, and the ball bearing 804 and the sleeve 801 form a rotating structure.

[0030] By adopting the above technical solution, the drive rod 303 drives the sleeve 801 to fit the ball 804 of the mounting groove 803 to rotate along the collar 802. The mounting block 805 fixes the collar 802 inside the support frame 1, thereby ensuring the stability and smoothness of the rotating frame 301 during rotation.

[0031] Working principle: Supported by the bearing platform 6 and the support block 7, the tube segment is pushed into the support frame 1 through the feed port 2, and then into the tilting frame 301 through the placement port 302. The drive motor 305 drives the bidirectional screw 306 to make the sliding plate 307 slide along the placement port 302, and at the same time, it drives the locking block 5 to slide along the sliding groove 4 to prevent loosening. This can seal the tube segment and prevent it from coming loose during the sealing process. Then, the rotation motor 304 drives the drive rod 303 to rotate the tilting frame 301, so that the placement port 302 is upward for easy hoisting. When the drive rod 303 rotates, it drives the sleeve 801 to rotate inside the collar 802. Multiple balls 804 are set inside the placement groove 803 to form a ball bearing. At the same time, the placement block 805 supports and fixes the collar 802, thereby improving the stability and smoothness of the tilting frame 301 during the tilting process.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tilting frame for prefabricated components of large-diameter shield tunnel segments, comprising a support frame (1), characterized in that: The support frame (1) has a feed inlet (2) at its front end, and a drive mechanism (3) is provided inside the support frame (1). The drive mechanism (3) includes a tilting frame (301), which is rotatably connected to the inside of the support frame (1). The front end of the tilting frame (301) is provided with a mounting opening (302). Drive rods (303) are fixedly installed on both ends of the outer wall of the tilting frame (301). A rotating motor (304) is connected to one end of the drive rod (303) that passes through the tilting frame (301). A drive motor (305) is embedded on one side of the drive rod (303) on the outer wall of the tilting frame (301). A bidirectional screw (306) is connected to the power output end of the drive motor (305). A sliding plate (307) is slidably connected to one end of the bidirectional screw (306) that passes through the outer wall of the tilting frame (301).

2. The tilting frame for large-diameter shield tunnel segment prefabrication components according to claim 1, characterized in that: The flipping frame (301) forms a rotating structure with the support frame (1) through the drive rod (303), and the flipping frame (301) forms a sliding structure with the sliding plate (307).

3. The tilting frame for large-diameter shield tunnel segment prefabrication components according to claim 1, characterized in that: The mounting port (302) has a groove (4) at its lower interior, and a locking block (5) is slidably connected inside the groove (4).

4. The tilting frame for large-diameter shield tunnel segment prefabrication components according to claim 1, characterized in that: The front end of the support frame (1) is fixedly installed with a bearing platform (6), and the top of the bearing platform (6) is fitted with a support block (7).

5. The tilting frame for prefabricated components of large-diameter shield tunnel segments according to claim 1, characterized in that: The drive rod (303) is provided with a limiting mechanism (8) on its outside. The limiting mechanism (8) includes a sleeve (801), which is fixedly installed on the outside of the drive rod (303), and a collar (802) is sleeved on the outside of the sleeve (801).

6. The tilting frame for a large-diameter shield tunnel segment prefabrication component according to claim 5, characterized in that: The limiting mechanism (8) also includes a mounting groove (803), which is located between the sleeve (801) and the collar (802), and a ball bearing (804) is slidably connected inside the mounting groove (803). Mounting blocks (805) are fixedly installed on both sides of the outer wall of the collar (802).

7. The tilting frame for large-diameter shield tunnel segment prefabrication components according to claim 6, characterized in that: The sleeve (801) and the ball (804) are closely fitted together, and the ball (804) and the sleeve (801) form a rotating structure.

Images