Simple steel mould trolley for side wall lining of non-pressure tunnel

Abstract

A simple steel mould trolley for non-pressure tunnel side wall lining comprises a trolley body, side mould plates are arranged on the two sides of the trolley body, a plurality of sets of hydraulic cylinders are arranged in the middle of the trolley body at intervals in the length direction of the trolley body, bases of the hydraulic cylinders are horizontally fixed to the trolley body, and piston rods are fixed to the side mould plates. A plurality of groups of diagonal bracings are arranged in the height direction and the length direction of the trolley body at intervals, adjustable jacking lead screws are arranged at the ends of the diagonal bracings and horizontally connected with the side formworks, a plurality of groups of telescopic supporting rods are arranged in the height direction and the length direction of the trolley body at intervals, and the telescopic supporting rods are horizontally connected with the side formworks. The bottom of the trolley main body is provided with walking wheels, and the top of the trolley main body is provided with an operation platform; the device is convenient to transport and assemble in a hole and convenient to operate, concrete can be directly warehoused from the top of the side wall, an insertion type vibrator is conveniently adopted for vibration manually, the concrete construction quality can be guaranteed, and the construction progress is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and particularly relates to a simple steel formwork trolley for the lining of the side wall of a non-pressure tunnel. Background Art

[0002] A steel formwork trolley is a special equipment designed and manufactured to improve the surface smoothness and lining speed of tunnel linings and reduce labor intensity.

[0003] In practice, the #1 water conveyance tunnel of the first bid section of the tunnel project of the Yinchuo-Jiliao Project has a horseshoe-shaped cross-section. The top arch of the Class III surrounding rock is not lined, only the bottom slab and side wall are lined. The lining thickness is 33 cm, and the cross-sectional size after lining is 3.86 m × 4.83 m (width × height). The lining is constructed in two phases. First, the bottom slab with a 50-cm small low wall is constructed, and then the side wall concrete is constructed in the second phase.

[0004] Since the length of the Class III surrounding rock of the above tunnel is 4.67 km (accounting for 51.7%), if a conventional steel formwork trolley is used for tunnel lining, it needs to be designed and processed by a professional manufacturer, has a large self-weight, a complex structure, a high cost, and is not convenient for in-tunnel assembly. If a traditional full hall formwork support system is used, there are complex processes, a large amount of work, low material recycling utilization rate, large waste, high cost, and the progress cannot be guaranteed. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a simple steel formwork trolley for the lining of the side wall of a non-pressure tunnel that is convenient for in-tunnel transportation and assembly, can ensure the construction quality of lining concrete, reduce construction costs, and speed up the construction progress.

[0006] The technical solution adopted to solve the above technical problem is: a simple steel formwork trolley for the lining of the side wall of a non-pressure tunnel, including a trolley main body, characterized in that: side formworks are arranged on both sides of the trolley main body; a number of groups of hydraulic cylinders are arranged at intervals along the length direction of the trolley main body in the middle of the trolley main body, the base of the hydraulic cylinder is horizontally fixed on the trolley main body, and the piston rod is fixed on the side formwork; a number of groups of cross braces are arranged at intervals in both the height direction and the length direction of the trolley main body, adjustable jacking screws are arranged at the ends of the cross braces, and the adjustable jacking screws are horizontally connected to the side formwork; a number of groups of telescopic struts are arranged at intervals in both the height direction and the length direction of the trolley main body, and the telescopic struts are horizontally connected to the side formwork; a winch is arranged at the lower part of the trolley main body, walking wheels are arranged at the bottom, and an operation platform is arranged at the top.

[0007] The telescopic strut of the utility model is: one end of the strut body is fixed on the side formwork, a limiting rod is vertically arranged at the other end, a sliding sleeve is fixed on the trolley main body, the strut body extends into the sliding sleeve, and sliding wheels are arranged between the two.

[0008] The sliding sleeve of the present utility model has an L-shaped structure. A sliding wheel is provided between the long arm of the L-shaped structure and the strut body. The short arm of the L-shaped structure is a tubular structure, and the strut body extends into it with a sliding wheel provided between them.

[0009] On the side formwork of the present utility model, several groups of longitudinal fixing rods are vertically arranged at intervals in the length direction, and the strut body is arranged on the longitudinal fixing rods.

[0010] On the side formwork of the present utility model, several groups of longitudinal connecting rods are arranged at intervals in the length direction. Several groups of transverse connecting mechanisms are vertically arranged at intervals on the longitudinal connecting rods, and the transverse connecting mechanisms are connected to the adjustable jacking lead screws.

[0011] The transverse connecting mechanism of the present utility model is composed of two steel pipes arranged in parallel, and the end of the adjustable jacking lead screw is clamped outside the two steel pipes.

[0012] The side formwork of the present utility model is: a template body 1 is composed of a steel plate arranged outside the stiffening ribs arranged vertically and horizontally. A hydraulic cylinder fixing rod is horizontally arranged in the middle of the template body, and the hydraulic cylinder fixing rod is connected to the piston rod of the hydraulic cylinder.

[0013] The winch of the present utility model is fixed to the lower part of the trolley body through a winch bracket.

[0014] Since the present utility model is provided with devices such as hydraulic cylinders, telescopic struts, cross braces, and adjustable jacking lead screws between the side formwork and the trolley body, the side formwork is suspended on both sides of the trolley body and can move back and forth along both sides. The telescoping of the two side formworks facilitates manual cleaning of the formwork surface and application of release agent after demoulding, ensuring the glossiness of the concrete surface. All components of this device are fabricated on-site using waste materials, achieving resource recycling. It has few supporting devices, is convenient to assemble, is easy to transport and assemble in the tunnel, is easy to operate, and the concrete can be directly fed into the bin from the top of the side wall, facilitating manual vibration with an inserted vibrator, ensuring the construction quality of the concrete and accelerating the construction progress. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present utility model.

[0016] Figure 2 is Figure 1 the A-A cross-sectional view of the trolley body 3 in

[0017] Figure 3 is Figure 1 the B-B cross-sectional view of the trolley body 3 in

[0018] Figure 4 is Figure 1 the schematic structural diagram of the side formwork 1 in

[0019] Figure 5 is Figure 1 the large-scale drawing of A of

[0020] Figure 6 is Figure 1 the large-scale drawing of B of

[0021] Figure 7 is Figure 6 the sectional view taken along C-C of

[0022] In the figure: 1. Side formwork; 2. Longitudinal connecting rod; 3. Trolley main body; 4. Opposing strut; 5. Adjustable jacking screw; 6. Telescopic strut; 7. Hydraulic cylinder; 8. Traveling wheel; 9. Winch; 10. Winch support; 11. Transverse connecting mechanism; 12. Longitudinal fixing rod; 1-1. Formwork body; 1-2. Hydraulic cylinder fixing rod; 6-1. Strut body; 6-2. Limit rod; 6-3. Sliding sleeve; 6-4. Sliding wheel. Specific embodiments

[0023] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments, but the present utility model is not limited to these embodiments.

[0024] Embodiment 1

[0025] In Figures 1 to 7 , the simple steel formwork trolley for the side wall lining of the non-pressure tunnel involved in the present utility model includes a trolley main body 3. A winch 9 is arranged at the lower part of the trolley main body 3, traveling wheels 8 are arranged at the bottom, and an operation platform is arranged at the top. The winch 9 is installed at the bottom of the trolley main body 3 through a winch support 10. The trolley main body 3 is driven to travel in the tunnel by the traction of the winch 9. The traveling wheels 8 have a self-braking function to ensure that the trolley main body 3 will not displace when reaching the designated position, resulting in a safety accident. Workers operate on the top operation platform.

[0026] Side formworks 1 are arranged on both sides of the trolley main body 3. A number of groups of opposing struts 4 are arranged at intervals in the height direction and the length direction of the trolley main body 3. An adjustable jacking screw 5 is arranged at the end of the opposing strut 4. The adjustable jacking screw 5 is horizontally connected to the side formwork 1. Specifically, a number of groups of longitudinal connecting rods 2 are arranged at intervals in the length direction of the side formwork 1, and a number of groups of transverse connecting mechanisms 11 are vertically arranged at intervals on the longitudinal connecting rods 2. The transverse connecting mechanism 11 is connected to the adjustable jacking screw 5. The transverse connecting mechanism 11 is composed of two parallel steel pipes, and the end of the adjustable jacking screw 5 is clamped outside the two steel pipes.

[0027] On the trolley main body 3, several groups of telescopic struts 6 are arranged at intervals in both the height direction and the length direction. The telescopic struts 6 are horizontally connected to the side formwork 1. The telescopic strut 6 in this embodiment is composed of a strut body 6-1, a limiting rod 6-2, a sliding sleeve 6-3, and a sliding wheel 6-4. Several groups of longitudinal fixing rods 12 are vertically arranged at intervals in the length direction of the side formwork 1. One end of the strut body 6-1 is fixed to the longitudinal fixing rod 12, and a limiting rod 6-2 is vertically arranged at the other end. The sliding sleeve 6-3 is of an L-shaped structure. The long arm end of the L-shaped structure is of a steel section structure and is fixed to the trolley main body 3. The short arm of the L-shaped structure is of a tubular structure. The strut body 6-1 extends into the sliding sleeve 6-3, and a sliding wheel 6-4 is arranged between the two. That is, a sliding wheel 6-4 is arranged between the long arm of the L-shaped structure and the strut body 6-1. The strut body 6-1 extends into the short arm sleeve of the L-shaped structure, and a sliding wheel 6-4 is arranged between the two.

[0028] Several groups of hydraulic cylinders 7 are arranged at intervals along the length direction of the trolley main body 3 in the middle of the trolley main body 3. The base of the hydraulic cylinder 7 is horizontally fixed to the trolley main body 3, and the piston rod is fixed to the side formwork 1. The side formwork 1 in this embodiment is composed of a formwork body 1-1 and a hydraulic cylinder fixing rod 1-2. The formwork body 1-1 is composed of a steel plate arranged outside the criss-cross stiffening ribs. A hydraulic cylinder fixing rod 1-2 is horizontally arranged in the middle of the formwork body 1-1. The hydraulic cylinder fixing rod 1-2 is connected to the piston rod of the hydraulic cylinder 7. The hydraulic cylinder 7 is communicated with the hydraulic system arranged inside the trolley main body 3. During construction, the piston rod of the hydraulic cylinder 7 moves back and forth, driving the side formwork 1 to move. When the side formwork 1 moves, the fixing nut of the adjustable jacking screw 5 needs to be loosened. The adjustable jacking screw 5 moves inside the counter brace 4. When it moves to the designated position, the fixing nut of the adjustable jacking screw 5 is tightened. At this time, the adjustable jacking screw 5 and the counter brace 4 play a role in horizontally supporting and fixing the side formwork 1 to prevent it from tilting. The strut body 6-1 can move inside the sliding sleeve 6-3. The limiting rod 6-2 limits the displacement of the strut body 6-1 inside the sliding sleeve 3 to prevent lateral detachment. The strut body 6-1 plays a cantilever role, hanging the side formwork 1 on both sides of the trolley main body 3 to keep the side formwork 1 in a vertical state. This device can be used in multiple sections spliced together, that is, the length of the trolley should meet the designed section length. A circumferential expansion joint is provided every 12 m, with a rubber water stop and a closed-cell foam board in the middle. The length of the trolley panel is 12.1 m (10 cm of which is processed into a detachable form), and it is processed into a two-section combination of 6 m + 6.1 m for easy transfer and assembly in the tunnel. A safety climbing ladder can be arranged behind the trolley for the operation personnel to go up and down. The two sides of the safety climbing ladder are made of Φ48 steel pipes, and the steps are made of Φ22 threaded steel bars. The step spacing is 35 cm, and the width is 60 cm. Safety guards with a height of 60 cm are arranged on both sides of the climbing ladder. Safety guards with a height of 1.2 m are arranged at the front and rear ends of the operation platform on the top of the trolley.

Claims

1. A simple steel formwork trolley for lining the side wall of a pressureless tunnel, comprising a trolley body (3), characterized in that: Side templates (1) are arranged on both sides of the trolley body (3); a plurality of groups of hydraulic cylinders (7) are arranged at intervals in the middle of the trolley body (3) along the length direction of the trolley body (3); the base of the hydraulic cylinder (7) is horizontally fixed on the trolley body (3); and the piston rod is fixed on the side template (1); a plurality of groups of opposite supports (4) are arranged at intervals in the height direction and the length direction of the trolley body (3); an adjustable top support screw (5) is arranged at the end of the opposite support (4); the adjustable top support screw (5) is horizontally connected to the side template (1); a plurality of groups of telescopic support rods (6) are arranged at intervals in the height direction and the length direction of the trolley body (3); the telescopic support rods (6) are horizontally connected to the side template (1); a winch (9) is arranged at the lower part of the trolley body (3); a walking wheel (8) is arranged at the bottom; and an operating platform is arranged at the top.

2. The simple steel formwork trolley for side wall lining of a pressureless tunnel according to claim 1 is characterized in that The telescopic support rod (6) comprises: a support rod body (6-1) having one end fixed on the side template (1), a limit rod (6-2) vertically arranged on the other end, a sliding sleeve (6-3) fixed on the trolley body (3), the support rod body (6-1) extending into the sliding sleeve (6-3), and a sliding wheel (6-4) arranged between the two.

3. The simple steel formwork trolley for side wall lining of a pressureless tunnel according to claim 2 is characterized in that: The sliding sleeve (6-3) is an L-shaped structure, a sliding wheel (6-4) is arranged between the long arm of the L-shaped structure and the support rod body (6-1), and the short arm of the L-shaped structure is a tubular structure, the support rod body (6-1) extends into it, and a sliding wheel (6-4) is arranged between the two.

4. The simple steel formwork trolley for side wall lining of a pressureless tunnel according to claim 2 is characterized in that: A plurality of groups of longitudinal fixing rods (12) are vertically spaced apart in the length direction of the side formwork (1), and the support rod body (6-1) is arranged on the longitudinal fixing rods (12).

5. The simple steel formwork trolley for side wall lining of a pressure-free tunnel according to claim 1 is characterized in that: The side template (1) is provided with a plurality of groups of longitudinal connecting rods (2) at intervals in the length direction, and a plurality of groups of transverse connecting mechanisms (11) are provided at vertical intervals on the longitudinal connecting rods (2), and the transverse connecting mechanisms (11) are connected to the adjustable jacking screw (5).

6. The simple steel formwork trolley for side wall lining of a pressure-free tunnel according to claim 5 is characterized in that: The transverse connection mechanism (11) is composed of two steel pipes arranged in parallel, and the end of the adjustable supporting screw (5) is clamped on the outside of the two steel pipes.

7. The simple steel formwork trolley for side wall lining of a pressureless tunnel according to claim 1 is characterized in that The side formwork (1) comprises a formwork body (1-1) formed by steel plates arranged outside the crisscrossed stiffening ribs, a hydraulic cylinder fixing rod (1-2) being arranged transversely in the middle of the formwork body (1-1), and the hydraulic cylinder fixing rod (1-2) being connected to the piston rod of the hydraulic cylinder (7).

8. The simple steel formwork trolley for side wall lining of a pressureless tunnel according to claim 1 is characterized in that: The hoist (9) is fixed to the lower part of the trolley body (3) via a hoist bracket (10).

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