Tunnel ventilation inclined shaft partition wall formwork trolley

Abstract

A tunnel ventilation inclined shaft middle partition wall formwork trolley, including first portal, second portal, third portal, fourth portal and base provided at the bottom of each portal, first formwork group is arranged between first portal and second portal, second formboard group is arranged between second portal and third portal, left and right sides of lower part of second formboard group are connected with second portal and third portal through second telescopic lead screw, left and right sides of upper part of second formboard group are connected with second portal and third portal through fifth hydraulic cylinder, third formwork group is arranged between third portal and fourth portal, tensioning lead screw is arranged between each formwork group, two groups of travelling devices are arranged on the bottom beam of each portal along the direction of tunnel;The formwork group of the utility model is good in integrity, formwork erection / dismantling is simple, convenient to move, the whole process is completed using hydraulic cylinder and cannot damage the surface of middle partition wall, three middle partition walls of the same section in ventilation inclined shaft are once cast into shape, work efficiency is improved, and construction cost is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tunnel partition wall casting construction, specifically involving a formwork trolley for a tunnel ventilation inclined shaft partition wall. Background Technology

[0002] In mountainous areas, highway construction often involves many extra-long tunnels. Both during tunnel construction and operation, inclined shafts serve as ventilation channels. These ventilation channels rely on a central partition wall to separate supply and exhaust air. Therefore, the construction of the central partition wall is of paramount importance. The construction process mostly involves on-site assembly of formwork and pouring of concrete. This method has the following problems:

[0003] (1) The construction period is long and cannot be streamlined. The various processes before and after each concrete pouring cannot be smoothly connected, resulting in process interruption and seriously delaying the construction progress.

[0004] (2) High cost and high construction intensity. Before each concrete pouring of the partition wall, a lot of manpower and machinery are needed to assemble the formwork and scaffolding, dismantle the formwork and scaffolding, and the formwork is easily damaged and needs to be replaced frequently.

[0005] (3) The safety and quality assurance coefficient is low. The formwork and scaffolding assembled on site in a confined space are difficult to guarantee their integrity. They are prone to bursting during the pouring process, which can cause the partition wall to twist and deform, affecting its function. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a reasonably designed, safe and reliable formwork trolley for the partition wall in the tunnel ventilation inclined shaft that avoids manual handling of steel rails.

[0007] The technical solution adopted to solve the above technical problems is as follows: A formwork trolley for a partition wall in a tunnel ventilation inclined shaft, including a first gantry, a second gantry, a third gantry, a fourth gantry, and a base set at the bottom of each gantry. A first formwork group is set between the first gantry and the second gantry, and a second formwork group is set between the second gantry and the third gantry. The lower left and right sides of the second formwork group are connected to the second gantry and the third gantry through second telescopic screws, and the upper left and right sides are connected to the second gantry and the third gantry through fifth hydraulic cylinders. A third formwork group is set between the third gantry and the fourth gantry. Tie rods are set between each formwork group. Two sets of traveling devices are set on the bottom beam of each gantry along the tunnel direction.

[0008] The first template group, the second template group, and the third template group of this utility model are all composed of curved panels and straight panels hinged together. The curved panels are connected to the top of each gantry through a fourth hydraulic cylinder and a third telescopic screw.

[0009] The first and fourth gantry frames of this utility model are connected to the lining via a first telescopic screw.

[0010] The second template assembly of this utility model has first connecting rods on both the upper left and right sides, between the second gantry and the third gantry.

[0011] The first, second, third, and fourth gantry frames of this utility model are all equipped with sliding supports on the vertical beams on the front and rear sides of the lower part. Each sliding support contains a sliding rod. The upper end of the sliding rod is connected to the piston rod of the first hydraulic cylinder, and the lower end is connected to the base. The first hydraulic cylinder is vertically arranged on the vertical beam of the gantry frame.

[0012] The base of this utility model includes a base body, with slide rails provided on both sides of the upper surface of the base body. The slider is slidably mounted on the slide rails. The cylinder base of the third hydraulic cylinder is fixed to the upper surface of the base body, and the piston rod is fixed to the side of the slider near the template assembly. The top of the slider is connected to the slide rod.

[0013] The first template group, the second template group, and the third template group of this utility model are provided with several vibration windows on both sides.

[0014] The walking device of this utility model includes two sets of walking supports, which are connected by a second connecting rod. The tops of the two sets of walking supports are slidably disposed on the lower part of the gantry bottom beam. The cylinder base of the sixth hydraulic cylinder is connected to the gantry bottom beam, and the piston rod end is connected to one of the walking supports.

[0015] This invention has the following advantages over the prior art:

[0016] 1. The template assembly of this utility model has good overall integrity, simple formwork support / disassembly, and convenient movement. The entire process is completed using hydraulic cylinders.

[0017] 2. This utility model allows the three intermediate partition walls in the same section of a ventilation inclined shaft to be cast in one go, which improves work efficiency and saves construction costs.

[0018] 3. In the concrete pouring process, the partition wall formwork of this utility model is equipped with vibration windows around the perimeter, which makes vibration more convenient and the working environment safer.

[0019] 4. The template assembly disassembly process of this utility model uses hydraulic cylinders for overall movement, which will not damage the surface of the partition wall, making the structure more complete and beautiful in appearance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention within the cross-section of a tunnel.

[0021] Figure 2 This is a schematic diagram of the present invention within the longitudinal section of a tunnel.

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle base 4.

[0023] In the diagram: 1. First gantry; 2. First hydraulic cylinder; 3. First telescopic screw; 4. Base; 5. Sliding support; 6. First template assembly; 7. Second gantry; 8. Second template assembly; 9. Second telescopic screw; 10. Third gantry; 11. Third hydraulic cylinder; 12. Third template assembly; 13. Fourth gantry; 14. Fourth hydraulic cylinder; 15. Third telescopic screw; 16. Fifth hydraulic cylinder; 17. First connecting rod; 18. Tie rod; 19. Vibration window; 20. Traveling support; 21. Sixth hydraulic cylinder; 22. Second connecting rod; 4-1. Slider; 4-2. Slide rail; 4-3. Base body. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

[0025] Example 1

[0026] exist Figure 1 , 2 In section 3, the partition wall template trolley of the tunnel ventilation inclined shaft involved in this utility model includes a first gantry 1, a second gantry 7, a third gantry 10, a fourth gantry 13, and a base 4 set at the bottom of each gantry. A first template group 6 is set between the first gantry 1 and the second gantry 7, and a second template group 8 is set between the second gantry 7 and the third gantry 10. The lower left and right sides of the second template group 8 are connected to the second gantry 7 and the third gantry 10 through second telescopic screws 9, and the upper left and right sides are connected to the second gantry 7 and the third gantry 10 through fifth hydraulic cylinders 16. A first connecting rod 17 is set between the upper left and right sides of the second template group 8 and the second gantry 7 and the third gantry 10. A third template group 12 is set between the third gantry 10 and the fourth gantry 13. A tie rod 18 is set between each template group to further fix the template group. The distance between the first template group 6 and the third template group 12 is adjusted by moving the first gantry 1 and the second gantry 7 on the base 4. After the distance between the first template group 6 and the third template group 12 is adjusted, the distance between the second template groups 8 is adjusted by the fifth hydraulic cylinder 16. The second telescopic screw 9 and the first connecting rod 17 assist in fixing the second template groups 8. In this embodiment, the first template group 7, the second template group 8, and the third template group 12 are all constructed by hinged arc-shaped panels and straight panels. The arc-shaped panels are connected to the top of each gantry by the fourth hydraulic cylinder 14 and the third telescopic screw 15. Several vibration windows 19 are provided on both sides of the first template group 6, the second template group 8, and the third template group 12.

[0027] The gantry can move back and forth on the base 4 in a direction perpendicular to the central partition wall, thereby adjusting the distance between each template group. Specifically, the base 4 in this embodiment includes a base body 4-3. The base body 4-3 should be relatively wide to increase the contact area with the ground and improve the load-bearing capacity of the trolley. Slide rails 4-2 are provided on both sides of the upper surface of the base body 4-3. The slide rails 4-2 are arranged perpendicular to the central partition wall. The slider 4-1 is slidably arranged on the slide rails 4-2. The cylinder base of the third hydraulic cylinder 11 is fixed to the upper surface of the base body 4-3, and the piston rod is fixed to the side of the slider 4-1 near the template group. Sliding supports 5 are fixed on the vertical beams on the front and rear sides of the lower part of the first gantry 1, the second gantry 7, the third gantry 10, and the fourth gantry 13. A sliding rod is provided in the sliding support 5. The upper end of the sliding rod is connected to the piston rod of the first hydraulic cylinder 2, and the lower end is connected to the top of the slider 4-3. The first hydraulic cylinder 2 is vertically arranged on the vertical beam of the gantry. The first hydraulic cylinder 2 drives the slide rod to slide within the sliding support 5, causing the base 4 to move up and down. The extension and retraction of the third hydraulic cylinder 11 causes the slider 4-3 to slide back and forth on the slide rail 4-2, thereby driving the entire gantry to move back and forth on the base 4, achieving the purpose of adjusting the distance of the template group. To ensure the stability of the entire device, the first gantry 1 and the fourth gantry 15 are connected to the lining through the first telescopic screw 3. After adjustment, the first telescopic screw 3 is fixed for auxiliary support and fixation.

[0028] Two sets of traveling devices are installed on the bottom beam of each gantry along the tunnel direction. In this embodiment, the traveling device includes two sets of traveling supports 20, which are connected by a second connecting rod 22. The tops of the two sets of traveling supports 20 are slidably mounted on the lower part of the bottom beam of the gantry. The cylinder base of the sixth hydraulic cylinder 21 is connected to the bottom beam of the gantry, and the piston rod end is connected to one of the traveling supports 20. After the first section is poured, the first hydraulic cylinder 2 retracts, causing the base 4 to rise. The traveling support 20 falls to the ground along with the gantry, contacting the ground and serving as support for the entire gantry. The sixth hydraulic cylinder 21 extends, pushing the gantry forward on the traveling support 20. After completing one stroke, the first hydraulic cylinder 2 extends, causing the base 4 to fall, and the traveling support 20 lifts off the ground. The sixth hydraulic cylinder 21 retracts, allowing the traveling support 20 to move forward on the bottom beam of the gantry. This completes one traveling cycle. The above cycle is repeated to complete the forward movement of the entire gantry to the designated position.

[0029] The gantry of this utility model is also equipped with a hydraulic system and an electrical distribution system. The hydraulic system controls the operation of each hydraulic cylinder, and the electrical distribution system provides electrical power to the switch of the hydraulic system's oil pump motor. Both of these are existing technologies and therefore are not shown in the figure.

Claims

1. A formwork trolley for a partition wall in a tunnel ventilation inclined shaft, comprising a first gantry (1), a second gantry (7), a third gantry (10), a fourth gantry (13), and a base (4) disposed at the bottom of each gantry, characterized in that: A first template group (6) is set between the first gantry (1) and the second gantry (7). A second template group (8) is set between the second gantry (7) and the third gantry (10). The lower left and right sides of the second template group (8) are connected to the second gantry (7) and the third gantry (10) through the second telescopic screw (9). The upper left and right sides are connected to the second gantry (7) and the third gantry (10) through the fifth hydraulic cylinder (16). A third template group (12) is set between the third gantry (10) and the fourth gantry (13). Tie rods (18) are set between each template group. Two sets of walking devices are set on the bottom beam of each gantry along the tunnel direction.

2. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: The first template group (6), the second template group (8), and the third template group (12) are all made of curved panels and straight panels hinged together. The curved panels are connected to the top of each gantry through the fourth hydraulic cylinder (14) and the third telescopic screw (15).

3. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: The first gantry (1) and the fourth gantry (13) are connected to the lining via the first telescopic screw (3).

4. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: The second template group (8) is provided with first connecting rods (17) on the upper left and right sides and between the second gantry (7) and the third gantry (10).

5. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: Sliding supports (5) are provided on the vertical beams on the front and rear sides of the lower part of the first gantry (1), second gantry (7), third gantry (10) and fourth gantry (13). A sliding rod is provided in the sliding support (5). The upper end of the sliding rod is connected to the piston rod of the first hydraulic cylinder (2) and the lower end is connected to the base (4). The first hydraulic cylinder (2) is vertically arranged on the vertical beam of the gantry.

6. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 5, characterized in that: The base (4) includes a base body (4-3), and slide rails (4-2) are provided on both sides of the upper surface of the base body (4-3). The slider (4-1) is slidably disposed on the slide rails (4-2). The cylinder base of the third hydraulic cylinder (11) is fixed to the upper surface of the base body (4-3), and the piston rod is fixed to the side of the slider (4-1) near the template group. The top of the slider (4-1) is connected to the slide rod.

7. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: Several vibration windows (19) are provided on both sides of the first template group (6), the second template group (8), and the third template group (12).

8. The formwork trolley for the partition wall in the tunnel ventilation inclined shaft according to claim 1, characterized in that: The walking device includes two sets of walking supports (20), which are connected by a second connecting rod (22). The tops of the two sets of walking supports (20) are slidably disposed on the lower part of the gantry bottom beam. The cylinder base of the sixth hydraulic cylinder (21) is connected to the gantry bottom beam, and the piston rod end is connected to one of the walking supports (20).

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