Needle beam and longitudinal moving system

Abstract

The utility model belongs to the field of shield tunnel construction of hydraulic engineering, and particularly relates to a needle beam and a longitudinal moving system. Comprising a needle beam, a front working platform and a rear working platform are arranged on the upper portions of the two ends of the needle beam respectively, and traction devices are arranged on the two working platforms; the needle beam front support and the needle beam tail support are respectively supported at the front end and the rear end of the needle beam; the needle beam is sleeved with the deviation frame, the deviation frame is driven by the traction device to move front and back along the needle beam, and a template is installed on the deviation frame.

Description

Technical Field

[0001] The utility model belongs to the field of shield tunnel construction of water conservancy projects, in particular to a needle beam and longitudinal movement system. Background Art

[0002] In recent years, with the development of my country's infrastructure, the number of full-circle tunnels has gradually increased, especially the water diversion and water supply tunnels. Compared with urban subway shield tunnels, the full-circle tunnels for water diversion and water supply have a small cross-section and a small turning radius. When pouring secondary lining concrete, it is more difficult for the lining trolley to change between straight sections and curved sections.

[0003] The use of circular needle beam lining trolleys for full-circle tunnel lining construction can ensure the integrity of the lining concrete. The existing needle beam trolleys are of the following types:

[0004] 1. Lining trolley with a straight longitudinal axis: It has excellent adaptability when constructing straight sections, but when constructing curved sections, the lining trolley cannot fit well with the curved sections. Therefore, in curved sections, especially those with small radius, it is necessary to reduce the length of concrete poured by the lining trolley at one time to avoid excessive deviation in lining thickness on both sides, which will fail to meet design and specification requirements.

[0005] 2. Lining trolley with wedge-shaped plates can be added: When constructing curved sections, the needle beam and formwork are disassembled and wedge-shaped plates are installed to adapt to the curved sections.

[0006] 3. Rotary form lining trolley: The lining trolley template is made into a trapezoid. When constructing a straight section, the lining trolley template is connected to the long side and the short side of the trolley template to make the lining trolley template a straight line; when constructing a curved section, the lining trolley template is connected to the long side and the long side of the lining trolley template to make the lining trolley template a curve by rotating the template (see CN202110647452.9 for details).

[0007] The traditional linear needle beam lining trolley has the following disadvantages:

[0008] 1. During the construction of curved sections, in order to ensure the thickness of the lining, the length of the lining cannot be too long at one time. The lining concrete is divided into many sections, there are many construction joints, and the quality risk is high;

[0009] 2. The amount of work required to erect formwork and carry out waterproofing is large;

[0010] 3. The lining times are many, the progress is slow, and the labor and equipment costs are high.

[0011] 4. Because the lining concrete is divided into many sections, construction interference is large and construction organization is difficult.

[0012] The traditional broken line lining trolley with wedge-shaped plates has the following disadvantages:

[0013] 1. The steps of disassembling the needle beam and installing the wedge plate are complicated. Repeated disassembly and assembly affect the accuracy of the lining trolley. The trolley parts are prone to local deformation, which affects the service life.

[0014] 2. The installation and removal of wedge-shaped formwork takes a long time, which affects the construction progress and has high labor costs.

[0015] The rotary mold lining trolley has the following disadvantages:

[0016] 1. Two sets of top pumping ports need to be installed, and the concrete pouring window can only be opened and closed horizontally, which is quite different from the traditional concrete pouring operation habits.

[0017] 2. The center of rotation of the template is located at the center of the template system, so counterweights are required to keep the center of gravity stable.

[0018] 3. The rotating formwork system has many components, including the hydraulic system. When the formwork rotates, the hydraulic system operating the formwork must also rotate with the formwork. Each set of formwork requires a hydraulic system. Therefore, multiple sets of independent closed hydraulic systems are required to prevent interference with each other during rotation. Therefore, multiple independent hydraulic operating systems are required. When rotating the formwork, multiple people are required to operate the hydraulic system in coordination, which makes the operation difficult.

[0019] 4. When adjusting the trolley line type, the entire formwork system needs to be rotated. The structure to be rotated is heavy, and all workers in the formwork need to be evacuated before rotation, and all construction tools must be cleaned up to avoid various accidents after rotation, which will cause great interference to construction.

[0020] In order to solve the above problems, the applicant proposed a double-wedge-shaped plate needle beam lining trolley for shield small-radius water diversion tunnels, in which the longitudinal axis of the full-circle template can be converted between a straight line and a broken line without the need to install or remove the wedge-shaped template or rotate the template system. In order to solve the problem of transporting the template system in the tunnel, the present application provides a needle beam and a longitudinal movement system. Utility Model Content

[0021] In order to solve the problem of transporting a template system in a tunnel, the utility model provides a needle beam and a longitudinal movement system.

[0022] The utility model adopts the following technical scheme: a needle beam and longitudinal movement system, including:

[0023] Needle beam, the upper parts of both ends of the needle beam are respectively provided with a front working platform and a rear working platform, and traction devices are provided on the two working platforms;

[0024] A needle beam front support and a needle beam rear support, wherein the needle beam front support and the needle beam rear support are respectively supported at the front and rear ends of the needle beam;

[0025] An offset frame is sleeved on the needle beam and moves forward and backward along the needle beam under the drive of the traction device. A template is installed on the offset frame.

[0026] In some embodiments, the needle beam is a groove-shaped hollow structure made of steel.

[0027] In some embodiments, a slide groove is provided on the left side or the right side of the needle beam for providing an offset reaction force to the offset frame.

[0028] In some embodiments, the traction device includes a front traction motor system and a rear traction motor system respectively arranged on the front working platform and the rear working platform. The front traction motor system and the rear traction motor system are respectively connected to the front and rear ends of the offset frame system through traction ropes.

[0029] In some embodiments, the front traction motor system includes a roller and a gear, which are meshed with the longitudinal motor and the gear; a traction rope is wound around the roller and the gear, and the traction rope is connected to the offset frame system through a traction rope fixing fixture.

[0030] In some embodiments, multiple groups of offset frames are provided, and adjacent offset frames are connected via frame clutch cylinders.

[0031] In some embodiments, the offset frame is a rectangular frame, and a frame sliding trolley is provided inside the sliding frame for moving the needle beam.

[0032] In some embodiments, a frame offset cylinder is disposed inside one side of the offset frame, and an end of the frame offset cylinder contacts a slide groove outside the needle beam.

[0033] Compared with the prior art, the utility model provides a device that can transport the template system in the tunnel. The template is fixed on an offset frame, the offset frame is erected on a needle beam, and the offset frame is driven by a traction device to move the template in the tunnel, thereby completing the transportation of the template in the tunnel and omitting the process of disassembling and assembling the template. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the longitudinal beam and traction mechanism diagram;

[0035] Figure 2 This is the front view of the longitudinal beam;

[0036] Figure 3 This is the structural diagram of the longitudinal beam operating platform;

[0037] Figure 4 This is the structural diagram of the lining trolley frame;

[0038] Figure 5 This is the frame structure diagram at both ends. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0040] like Figure 1 , Figure 2 , Figure 3 As shown: the needle beam and longitudinal movement system A includes a needle beam 4, a front support 5 for the needle beam in the lining forward direction, a rear support 6 for the needle beam of the lining trolley, a front traction motor system 17, a rear traction motor system 18, a front working platform 19, a rear working platform 20, a chute 21, and a traction rope 22.

[0041] The needle beam 4 is a groove-shaped hollow structure made of steel, which can significantly reduce the weight compared to the box beam.

[0042] A slide groove 21 is provided on the left or right side of the needle beam 4 , and the function of the slide groove 21 is to provide a deflection reaction force to the deflection frame system B.

[0043] The two ends of the needle beam 4 are provided with a front support 5 for the lining forward direction and a rear support 6 for the lining trolley needle beam. The front support 5 and the rear support 6 of the needle beam are used to support the overall weight of the lining trolley and the weight of concrete when pouring lining concrete.

[0044] A front working platform 19 and a rear working platform 20 are respectively arranged on the upper parts of both ends of the needle beam 4, and a front traction motor system 17 and a rear traction motor system 18 are respectively arranged on the two working platforms.

[0045] Furthermore, the traction rope 22 also includes a traction rope fixing fixture 22.1, and the traction rope fixing fixture 22.1 is fixed on the offset frame system B.

[0046] Furthermore, the front traction motor system 17 includes a roller and gear 17.1, a needle beam longitudinal movement motor and gear 17.2, and the roller and gear 17.1 are meshed with the longitudinal movement motor and gear 17.2; a traction rope 22 is wound around the roller and gear 17.1, and the traction rope 22 is connected to the offset frame system B through a traction rope fixing fixture 22.1, and the longitudinal movement motor and gear 17.2 drive the offset frame system B to move longitudinally forward and backward on the needle beam 4, or drive the needle beam 4 to move longitudinally forward and backward in the offset frame system B.

[0047] The rear traction motor system 18 is configured in the same manner as the front traction motor system 17 and will not be described in detail. Its function corresponds to that of the front traction motor system 17, driving the offset frame to move backward on the needle beam 4, or driving the needle beam 4 to move forward longitudinally in the offset frame system B.

[0048] Offset Frame:

[0049] like Figure 4-5 The offset frame includes an end sliding frame I23, a central sliding frame II24, a central sliding frame III25, an end sliding frame IV26, a frame clutch cylinder 27, a frame sliding trolley 28, and a frame offset cylinder 31. Different templates are installed on the end sliding frame I23, the central sliding frame II24, the central sliding frame III25, and the end sliding frame IV26.

[0050] A group of frame clutch oil cylinders 27 are respectively arranged between each two groups of sliding frames. The frame clutch oil cylinders 27 also include frame clutch oil cylinder hinge ears, and the frame clutch oil cylinder hinge ears are arranged on the vertical rods at the ends of the sliding frames.

[0051] Frame clutch cylinder hinge ears are provided on the vertical bars at the connection points of the end sliding frame I23, the central sliding frame II24, the central sliding frame III25 and the end sliding frame IV26, and the four groups of sliding frames are connected respectively through the frame clutch cylinder 27 and the frame clutch cylinder hinge ears.

[0052] The front and rear upper cross bars of each set of sliding frames are respectively sleeved around the needle beam 4 through two frame sliding trolleys 28.

[0053] The end sliding frame I23, the central sliding frame II24, the central sliding frame III25, and the end sliding frame IV26 are connected in sequence, and the end sliding frame I23 and the end sliding frame IV26 are respectively connected to the traction rope 22 through the traction rope fixing fixture 22.1.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A needle beam and longitudinal movement system, characterized in that: include: A needle beam (4), wherein a front working platform (19) and a rear working platform (20) are respectively arranged at the upper parts of both ends of the needle beam (4), and traction devices are arranged on the two working platforms; A needle beam front support (5) and a needle beam rear support (6), wherein the needle beam front support (5) and the needle beam rear support (6) are supported at the front and rear ends of the needle beam (4) respectively; An offset frame is sleeved on the needle beam (4) and moves forward and backward along the needle beam (4) under the drive of the traction device, and a template is installed on the offset frame.

2. The needle beam and longitudinal shifting system according to claim 1, characterized in that: The needle beam (4) is a groove-shaped hollow structure and is made of steel.

3. The needle beam and longitudinal shifting system according to claim 1, characterized in that: A sliding groove (21) is provided on the left side or the right side of the needle beam (4) for providing a deflection reaction force to the deflection frame.

4. The needle beam and longitudinal shifting system according to claim 1, characterized in that: The traction device comprises a front traction motor system (17) and a rear traction motor system (18) respectively arranged on a front working platform (19) and a rear working platform (20); the front traction motor system (17) and the rear traction motor system (18) are respectively connected to the front and rear ends of the offset frame system (B) via traction ropes (22).

5. The needle beam and longitudinal shifting system according to claim 4, characterized in that: The front traction motor system (17) comprises a roller and a gear (17.1), the roller and the gear (17.1) meshing with the longitudinal movement motor and the gear (17.2); a traction rope (22) is wound around the roller and the gear (17.1), and the traction rope (22) is connected to the offset frame via a traction rope fixing fixture (22.1).

6. The needle beam and longitudinal shifting system according to claim 1, characterized in that: The offset frames are arranged in multiple groups, and adjacent offset frames are connected via frame clutch cylinders (27).

7. The needle beam and longitudinal shifting system according to claim 1 or 6, characterized in that: The offset frame is a rectangular frame, and a frame sliding trolley (28) is arranged inside the sliding frame for moving on the needle beam (4).

8. The needle beam and longitudinal shifting system according to claim 3, characterized in that: A frame offset oil cylinder (31) is disposed inside one side of the offset frame, and an end of the frame offset oil cylinder (31) contacts a slide groove (21) outside the needle beam (4).

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