Inverted arch slip form mechanism of tunnel construction full-circle needle beam trolley

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a tunnel construction full-circle needle beam trolley inverted arch slip form mechanism which comprises a mechanism body arranged on the inner side of an annular arch plate of a trolley bottom arch formwork, a plurality of sets of guide rails are arranged in the mechanism body, each set of guide rails comprises two guide rails, and stroke grooves are formed in the sides, close to each other, of the guide rails. Two sliding templates are arranged on the inner sides of each group of guide rails; the mounting plate and the connecting plate tightly abut against the lower surface and the upper surface of the stroke groove through the balls, so that the sliding formwork can only slide along the stroke groove and cannot vertically shake up and down in the stroke groove, and concrete can be prevented from ejecting the sliding formwork when concrete is poured on the inverted arch part at the bottom of a tunnel. And a large gap is formed between the sliding template and the inverted arch template, so that the phenomena of material leakage and incorrect size after solidification are finally caused.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction. Background Art

[0002] Since the construction surface of the full-circular needle beam trolley is a fully enclosed structure, bubbles are prone to accumulation on the concrete surface of the inverted arch. At the same time, due to many reasons such as insufficient construction vibration, concrete defects such as honeycomb, roughness and bubbles often appear on the formed inverted arch concrete surface, affecting the construction quality. Therefore, an inverted arch sliding membrane mechanism is used to solve the above-mentioned concrete surface defects.

[0003] The existing application number is: 202122925712.2, a full-circle needle beam trolley arch sliding formwork mechanism for tunnel construction, which includes several sliding formworks and curved tracks. The several sliding formworks include several curved formworks and several conical rollers. The several conical rollers are respectively arranged at the four corners of the curved track and roll inside the curved track. The sliding formworks are respectively provided with traction components and drive components.

[0004] During use of the above technology, by driving the sliding formwork to move up and down, personnel can perform plastering on the concrete surface of the bottom inverted arch. However, since the sliding formwork is only connected to the arc track through the tapered rollers at the corners, and for the normal rolling of the tapered rollers, there is a gap between the tapered rollers and the upper wall of the arc track, which causes a gap between the sliding formwork and the arc track during use, resulting in a risk of the sliding formwork being lifted up by the concrete and causing material leakage. Therefore, in order to solve the above technical problems, we proposed a full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A full-circle needle beam trolley arch sliding membrane mechanism for tunnel construction, including a mechanism body arranged on the inner side of the annular arch plate of the trolley bottom arch template, a plurality of groups of guide rails are arranged in the mechanism body, each group of guide rails has two guide rails and a travel groove is arranged on the side close to each other, two sliding templates are arranged on the inner side of each group of guide rails, rotating shafts are rotatably installed at both ends of the upper surface of the sliding template, the two ends of the sliding template are connected to the traction chain in the mechanism body, the two ends of the rotating shaft extend into the travel groove and are fixed with a mounting plate, the upper surface of the mounting plate is provided with a connecting plate that can move up and down through a lifting assembly, the lower surface of the mounting plate and the upper surface of the connecting plate are in rolling contact with the lower surface and the upper surface of the travel groove through a plurality of balls, and scrapers are installed at both ends of the mounting plate.

[0008] Preferably, the lifting assembly includes two lifting rods and two support columns, the upper ends of the lifting rods are respectively fixed to the two ends of the lower surface of the connecting plate, the lower ends of the lifting rods are slidably inserted inside the mounting plate, and the two support columns abut against the ends of the lower ends of the lifting rods.

[0009] Preferably, the outer annular surface of one end of the support column facing the sliding template is connected to the mounting plate through a thread and the end surface of this end is provided with a hexagonal bolt hole, and the other end of the support column is conical and penetrates to the outside of the mounting plate body wall.

[0010] Preferably, the upper and lower body walls inside the travel groove are both equipped with slide rails, and the surfaces of the slide rails are provided with matching limit grooves corresponding to the balls.

[0011] Preferably, the outer surface of the scraper cooperates with the travel groove, the slide rail and the limit groove, and the scraper extends obliquely from one end away from the sliding template to one end away from the mounting plate.

[0012] Preferably, a tension spring is installed in the middle of the upper surface of the mounting plate, and the upper end of the tension spring is fixed to the lower surface of the connecting plate.

[0013] Preferably, bolts are provided at both ends of the mounting plate, and the mounting plate is connected to the scraper plate via the bolts.

[0014] The utility model proposes a tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism, which has the following beneficial effects:

[0015] 1: In the utility model, when the mounting plate and the connecting plate are tightly in contact with the lower surface and the upper surface of the travel groove through the ball bearings, the mounting plate and the connecting plate are limited, that is, the sliding template is limited synchronously, so that the sliding template can only slide along the travel groove and cannot swing vertically up and down in the travel groove, thereby preventing the concrete from pushing the sliding template when pouring the concrete of the inverted arch part at the bottom of the tunnel, resulting in a large gap between the sliding template and the inverted arch template, and finally causing material leakage and incorrect size after solidification; at the same time, since scrapers are installed at both ends of the mounting plate, that is, during the movement of the mounting plate, the interior of the travel groove can be scraped to remove debris, thereby preventing the concrete or other debris accidentally entering the travel groove from interfering with the sliding of the mounting plate, that is, avoiding interference with the sliding of the sliding template.

[0016] 2: In the utility model, the setting of the lifting assembly makes it easy to move the connecting plate up and down, and then it is convenient for personnel to install and disassemble the sliding template and the guide rail; the setting of the hexagon socket bolt hole makes it convenient for personnel to rotate the support column, and the setting of the thread makes it convenient to make a stable connection between the support column and the mounting plate. At the same time, since the other end of the support column is tapered, it is convenient for the support column to push the lifting rod; the setting of the slide rail and the limit groove makes it convenient to limit and guide the ball bearing, so that the mounting plate and the connecting plate are more stable when sliding; since the scraper is inclined at one end away from the mounting plate, the debris scraped off by the scraper will move along the inclined surface of the scraper until it finally moves to the outside of the travel groove, so that the debris scraped off by the scraper can be conveniently discharged from the travel groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism proposed by the utility model;

[0018] Figure 2 A schematic diagram of the coordination of the mounting plate, connecting plate, sliding rail and guide rail of the inverted arch sliding membrane mechanism of a full-circle needle beam trolley for tunnel construction proposed by the utility model;

[0019] Figure 3 A schematic diagram of the cooperation between the scraper and the slide rail of the inverted sliding membrane mechanism of a full-circle needle beam trolley for tunnel construction proposed by the utility model;

[0020] Figure 4 This is an external schematic diagram of a mounting plate of a full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction proposed by the utility model;

[0021] Figure 5 A schematic diagram of a lifting assembly of a full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction proposed by the utility model;

[0022] Figure 6The utility model is a tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism Figure 5 Schematic diagram of the splitting.

[0023] Figure 7 The utility model is a schematic diagram of the coordination between the main body of the mechanism and the trolley of a full-circular needle beam trolley inverted arch sliding membrane mechanism for tunnel construction proposed by the utility model.

[0024] In the figure: 1. Guide rail; 2. Sliding template; 3. Rotating shaft; 4. Mounting plate; 5. Connecting plate; 6. Ball bearing; 7. Scraper; 8. Lifting rod; 9. Support column; 10. Slide rail; 11. Limiting groove; 12. Tension spring; 13. Bolt; 14. Mechanism body. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] Reference Figure 1-7 , a full-circle needle beam trolley arch sliding membrane mechanism for tunnel construction, including a mechanism body 14 arranged on the inner side of the annular arch plate of the trolley bottom arch template, the mechanism body 14, the guide rail 1 and the sliding template 2 are all prior art (application number: 202122925712.2), and the sliding template 2 removes the original components for installing tapered rollers, and a plurality of groups of guide rails 1 are arranged in the mechanism body 14, each group of guide rails 1 has two guide rails 1 and a travel groove is arranged on the side close to each other, and two sliding templates 2 are arranged on the inner side of each group of guide rails 1, and rotating shafts 3 are rotatably installed at both ends of the upper surface of the sliding template 2, and the two ends of the sliding template 2 are connected to the traction chain in the mechanism body 14, and the two ends of the rotating shaft 3 extend into the travel groove and are fixed with a mounting plate 4, and the upper surface of the mounting plate 4 is provided with a connecting plate 5 that can move up and down through a lifting assembly, and the lower surface of the mounting plate 4 and the upper surface of the connecting plate 5 are in rolling contact with the lower surface and the upper surface of the travel groove through a plurality of balls 6, and scrapers 7 are installed at both ends of the mounting plate 4.

[0028] Example 2

[0029] Reference Figure 1-7 , when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0030] The lifting assembly includes two lifting rods 8 and two supporting columns 9. The upper ends of the lifting rods 8 are respectively fixed to the two ends of the lower surface of the connecting plate 5, and the lower ends of the lifting rods 8 are slidably inserted into the interior of the mounting plate 4. The two supporting columns 9 abut against the ends of the lower ends of the lifting rods 8. The setting of the lifting assembly allows personnel to first take out the supporting columns 9 when installing the sliding template 2, that is, when the mounting plate 4 is installed in the stroke groove, so that the connecting plate 5 moves toward the mounting plate 4 below under the action of gravity, that is, the distance between the mounting plate 4 and the ball bearings 6 on the connecting plate 5 is reduced until the distance between the two is smaller than the stroke groove. At this time, the personnel easily moves the mounting plate 4 into the stroke groove until the mounting plate 4 contacts the bottom surface of the stroke groove through the ball bearings 6 on the lower surface. Then the personnel first moves the connecting plate 5 upward for a certain distance, and then uses the supporting columns 9 to lift the connecting plate 5. The lowering rod 8 is supported, that is, the support column 9 pushes the lifting rod 8 to move upward, and finally the connecting plate 5 is tightly abutted against the upper surface of the inner part of the travel groove through the ball 6 on the upper surface. Therefore, through the setting of the lifting component, it is convenient to move the connecting plate 5 up and down, and then it is convenient for personnel to install and disassemble the sliding template 2 and the guide rail 1; the outer ring surface of the support column 9 facing one end of the sliding template 2 is connected to the mounting plate 4 through a thread and the end face of this end is provided with a hexagon socket bolt hole, and the other end of the support column 9 is tapered and penetrates to the outside of the body wall of the mounting plate 4. The setting of the hexagon socket bolt hole makes it convenient for personnel to rotate the support column 9, and the setting of the thread makes it convenient to make the support column 9 and the mounting plate 4 stably connected. At the same time, because the other end of the support column 9 is tapered, it is convenient for the support column 9 to push the lifting rod 8.

[0031] The upper and lower body walls inside the travel groove are both installed with slide rails 10, and the surfaces of the slide rails 10 are provided with matching limit grooves 11 corresponding to the ball bearings 6. The arrangement of the slide rails 10 and the limit grooves 11 facilitates the limiting and guiding of the ball bearings 6, so that the mounting plate 4 and the connecting plate 5 are more stable when sliding; the outer surface of the scraper 7 is matched with the travel groove, the slide rails 10 and the limit grooves 11, and the end of the scraper 7 away from the sliding template 2 extends obliquely toward the end away from the mounting plate 4. Since the end of the scraper 7 away from the mounting plate 4 is inclined, the debris scraped by the scraper 7 will move along the inclined surface of the scraper 7. Until it finally moves to the outside of the stroke groove, so that the debris scraped by the scraper 7 can be conveniently discharged from the stroke groove; a tension spring 12 is installed in the middle of the upper surface of the mounting plate 4, and the upper end of the tension spring 12 is fixed to the lower surface of the connecting plate 5. The setting of the tension spring 12 makes it easy to pull the connecting plate 5 to move toward the mounting plate 4 after taking out the support column 9, and can also limit the connecting plate 5, that is, to avoid the phenomenon that the connecting plate 5 is separated from the mounting plate 4 when not in use; bolts 13 are provided at both ends of the mounting plate 4, and the mounting plate 4 is connected to the scraper 7 by the bolts 13. The setting of the bolts facilitates the installation and disassembly of the scraper 7.

[0032] Principle and advantages of use: During the use of the utility model, both ends of the sliding template 2 in each group of guide rails 1 are connected to the ends of the traction chain in the mechanism body 14, that is, the mechanism body 14 drives the traction chain to move through the internal driving motor driving sprocket, so as to realize the sliding template 2 sliding along the guide rail 1, that is, when it is necessary to pour concrete on the bottom of the tunnel, the sliding template 2 is moved to the bottom of the guide rail 1, at this time, the sliding template 2 is in contact with the external trolley bottom template on the front and rear sides, that is, at this time, the bottom surface of the tunnel and the bottom templates on both sides and the upper sliding template 2 form a frame, and concrete can be poured in this frame, and when the concrete in this frame reaches the initial setting state, the two sliding templates 2 can be driven by the mechanism body 14 to slide along the guide rail 1 to the two ends of the guide rail 1, at this time, as the sliding template 2 slides, it gradually moves from the bottom of the tunnel to the middle of both sides, that is, the bottom surface of the tunnel is exposed, and the construction personnel can conveniently perform surface treatment on the exposed concrete, so as to solve the concrete surface disease of the inverted arch part of the bottom of the tunnel.

[0033] In the above process, when the sliding template 2 slides inside the travel groove of the guide rail 1, since a lifting assembly is provided between the connecting plate 5 and the mounting plate 4, that is, when the sliding template 2 is installed, that is, when the mounting plate 4 and the connecting plate 5 need to be installed inside the travel groove, the personnel can move the connecting plate 5 toward the mounting plate 4 through the lifting assembly, so that the distance between the ball bearings 6 at the mounting plate 4 and the connecting plate 5 is smaller than the width of the travel groove. At this time, the mounting plate 4 and the connecting plate 5 can be easily and conveniently placed in the travel groove, and then the personnel move the connecting plate 5 upwards through the lifting assembly until the connecting plate 5 is tightly fitted with the upper surface of the travel groove through the ball bearings 6 on the upper surface, that is, the mounting plate 4 and the connecting plate 5 are tightly abutted against the lower surface and the upper surface of the travel groove through the ball bearings 6. Thereby, the mounting plate 4 and the connecting plate 5 are limited, that is, the sliding template 2 is synchronously limited under the action of the rotating shaft 3, so that the sliding template 2 can only slide along the travel groove and cannot shake vertically up and down in the travel groove, thereby preventing the concrete from pushing up the sliding template 2 when the concrete of the inverted arch part at the bottom of the tunnel is poured, resulting in a large gap between the sliding template 2 and the inverted arch template, and finally causing material leakage and incorrect size after solidification; at the same time, since scrapers 7 are installed at both ends of the mounting plate 4, that is, the interior of the travel groove can be scraped off during the movement of the mounting plate 4, thereby preventing the concrete or other debris accidentally entering the travel groove from interfering with the sliding of the mounting plate 4, that is, avoiding interfering with the sliding of the sliding template 2.

[0034] It should be further explained that, through the setting of the lifting assembly, it is convenient to move the connecting plate 5 up and down, and then it is convenient for personnel to install and disassemble the sliding template 2 and the guide rail 1; the setting of the hexagon socket bolt hole is convenient for personnel to rotate the support column 9, and the setting of the thread is convenient for the support column 9 to be stably connected with the mounting plate 4. At the same time, since the other end of the support column 9 is tapered, it is convenient for the support column 9 to push the lifting rod 8; the setting of the slide rail 10 and the limiting groove 11 is convenient for limiting and guiding the ball 6, so that the mounting plate 4 and the connecting plate 5 are more stable when sliding; since the scraper 7 is inclined away from one end of the mounting plate 4, the debris scraped off by the scraper 7 will move along the inclined surface of the scraper 7 until it finally moves to the outside of the travel groove, so that the debris scraped off by the scraper 7 can be conveniently discharged from the travel groove.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A full-circle needle beam trolley inverted arch sliding membrane mechanism for tunnel construction, comprising a mechanism body (14) arranged on the inner side of the annular arch plate of the trolley bottom arch template, wherein a plurality of guide rails (1) are arranged in the mechanism body (14), characterized in that: Each group of guide rails (1) has two guide rails (1) and a travel groove is provided on one side close to each other. Two sliding templates (2) are provided on the inner side of each group of guide rails (1). Rotating shafts (3) are rotatably installed at both ends of the upper surface of the sliding template (2). Both ends of the sliding template (2) are connected to the traction chain in the mechanism body (14). Both ends of the rotating shaft (3) extend into the travel groove and are fixed with a mounting plate (4). The upper surface of the mounting plate (4) is provided with a connecting plate (5) that can move up and down through a lifting assembly. The lower surface of the mounting plate (4) and the upper surface of the connecting plate (5) are in rolling contact with the lower surface and the upper surface of the travel groove through a plurality of balls (6). Scrapers (7) are installed at both ends of the mounting plate (4).

2. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 1, characterized in that: The lifting assembly comprises two lifting rods (8) and two supporting columns (9); the upper ends of the lifting rods (8) are respectively fixed to the two ends of the lower surface of the connecting plate (5); the lower ends of the lifting rods (8) are slidably inserted into the interior of the mounting plate (4); and the two supporting columns (9) abut against the ends of the lower ends of the lifting rods (8).

3. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 2, characterized in that: The outer ring surface of one end of the support column (9) facing the sliding template (2) is connected to the mounting plate (4) through a thread and the end surface of this end is provided with a hexagonal bolt hole. The other end of the support column (9) is conical and penetrates to the outside of the mounting plate (4) body wall.

4. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 1, characterized in that: Slide rails (10) are installed on the upper and lower body walls inside the travel groove, and the surfaces of the slide rails (10) are provided with matching limit grooves (11) corresponding to the balls (6).

5. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 4, characterized in that: The outer surface of the scraper (7) cooperates with the travel groove, the slide rail (10) and the limit groove (11), and the end of the scraper (7) away from the sliding template (2) extends obliquely toward the end away from the mounting plate (4).

6. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 1, characterized in that: A tension spring (12) is installed in the middle of the upper surface of the installation plate (4), and the upper end of the tension spring (12) is fixed to the lower surface of the connecting plate (5).

7. The tunnel construction full-circle needle beam trolley inverted arch sliding membrane mechanism according to claim 1, characterized in that: Bolts (13) are provided at both ends of the mounting plate (4), and the mounting plate (4) is connected to the scraper (7) via the bolts (13).

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