Mining self-adaptive adjustment integral steel mould trolley

Abstract

The utility model discloses a mining self-adaptive adjustment integral steel mould trolley. The mining self-adaptive adjustment integral steel mould trolley comprises a trolley inner frame, two movable steel moulds, two side steel moulds, an arch supporting truss and an arch steel mould, the side edge steel dies are vertically arranged, and the two side edge steel dies are parallel. The two side steel dies are respectively fixed on the two side walls of the trolley inner frame through a plurality of supporting rods; the arch supporting truss is fixed to the top of the trolley inner frame through multiple rows of jacks. The arch steel die is mounted at the top of the arch support truss; the two sides of the arch steel die are each hinged to a movable steel die, and the movable steel dies are driven by a hydraulic cylinder to pivot. The trolley is simple in structure, the arch steel die is supported by the top of the trolley inner frame through the jack, and the movable steel dies are hinged to the two sides of the arch steel die; the two side steel dies are fixed to the two side walls of the trolley inner frame through the supporting rods respectively, the size of the trolley is adjustable, the trolley can be used for supporting construction of chambers of different sizes, the production cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining engineering, in particular to a self-adjusting integral steel formwork trolley for mining, which is used for template support, positioning and demoulding operations in mine tunnel lining and unloading chamber support construction. Background Art

[0002] In mining projects, the support construction of unloading chambers is an important task. Traditional support methods have problems such as long formwork time and unstable concrete forming quality, which affect the construction progress and project quality. In addition, the existing steel formwork trolley is a fixed structure, which is difficult to use for the support construction of chambers of different sizes. Therefore, different steel formwork trolleys are required for the construction of chambers of different sizes, which greatly increases the cost. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a mining self-adaptive adjustment integral steel formwork trolley with simple structure, convenient operation and adjustable size. The support is stable and the formwork time is short, so that concrete can be well formed.

[0004] The technical solution adopted by the utility model is: a self-adaptive adjustment integral steel mold trolley for mining, comprising a trolley inner frame, two movable steel molds, two side steel molds, an arch support truss and an arch steel mold; the side steel molds are vertically arranged, and the two side steel molds are parallel; the trolley inner frame is placed between the two side steel molds, and the two side steel molds are respectively fixed on the two side walls of the trolley inner frame through a plurality of support rods; the bottom of the arch support truss is installed on the top of multiple rows of jacks, and the bottom of the multiple rows of jacks is fixed on the top of the trolley inner frame; the arch steel mold is installed on the top of the arch support truss; a movable steel mold is hinged on both sides of the arch steel mold, and the movable steel mold is driven to pivot by a hydraulic cylinder.

[0005] Furthermore, a group of trolley wheels are respectively provided on both sides of the bottom of the trolley inner frame for supporting on the track.

[0006] Furthermore, one end of the hydraulic cylinder is hinged to the middle part of the inner wall of the movable steel mold, and the other end of the hydraulic cylinder is hinged to the arch support truss.

[0007] Furthermore, a row of jacks are respectively provided on both sides of the top of the inner frame of the trolley.

[0008] Furthermore, the arch steel mold is hinged to the movable steel mold through a plurality of hinges.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model has a simple structure. The top of the trolley inner frame of the utility model supports the arch steel mold through a jack, and movable steel molds are hinged on both sides of the arch steel mold; the two side steel molds are respectively fixed on the two side walls of the trolley inner frame through a plurality of support rods, so that the size of the utility model is adjustable, the support size can be accurately adjusted, and it can be used for the support construction of chambers of different sizes, thereby reducing production costs and improving construction efficiency.

[0011] 2. The utility model has the advantages of stable support, short formwork time and good concrete forming.

[0012] 3. A set of trolley wheels are respectively arranged on both sides of the bottom of the inner frame of the trolley of the utility model, and the traveling mechanism is flexible and convenient, which facilitates the movement and positioning of the trolley in the unloading chamber.

[0013] 4. The utility model can greatly improve the quality of concrete forming, reduce waste and rework in construction, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural diagram of the utility model when the movable steel mold is folded.

[0016] Figure 3 It is a structural diagram of the movable steel mold of the utility model when it is unfolded.

[0017] Figure 4 It is a side view of the inner frame of the trolley of the present utility model.

[0018] In the figure: 1. hinge, 2. movable steel mold, 3. side steel mold, 4. support rod, 5. trolley wheel, 6. trolley inner frame, 7. arch steel mold, 8. arch supporting truss, 9. jack, 10. hydraulic cylinder. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-3As shown, the utility model includes a trolley inner frame 6, two movable steel molds 2, two side steel molds 3, an arch support truss 8 and an arch steel mold 7. The side steel molds 2 are vertically arranged, and the two side steel molds 2 are parallel. The trolley inner frame 6 is placed between the two side steel molds 2, and the two side steel molds 2 are respectively fixed on the two side walls of the trolley inner frame through a plurality of support rods 4. By replacing the support rods 4 of different sizes, the size between the two side steel molds 2 can be adjusted. A group of trolley wheels 5 are respectively provided on both sides of the bottom of the trolley inner frame 6, each group of two trolley wheels 5 (the number of trolley wheels in each group can be more than two), which are used to support on the track, so as to facilitate the flexible movement of the utility model in the unloading chamber.

[0021] A row of jacks 9 is respectively arranged on both sides of the top of the trolley inner frame 6 (the number of rows of jacks 9 is not limited to two, and can be more than two), and the jacks 9 are arranged vertically, and the bottom of the arch support truss 8 is installed on the top of the multiple rows of jacks 9, and the arch steel mold 7 is installed on the top of the arch support truss 8. A movable steel mold 2 is respectively hinged on both sides of the arch steel mold 7 through multiple hinges, and the movable steel mold 2 is driven to pivot by multiple hydraulic cylinders 10. One end of the hydraulic cylinder 10 is hinged to the middle of the inner wall of the movable steel mold, and the other end of the hydraulic cylinder 10 is hinged to the arch support truss 8.

[0022] The size of the two side steel molds 2 of the utility model can be adjusted by replacing support rods of different sizes, and the height direction can be adjusted by a jack 9, which can be quickly and accurately adjusted according to the designed support size. The movable steel mold 2, the side steel mold 3 and the arch steel mold 7 are made of high-strength steel plates, which have good rigidity and wear resistance. The trolley inner frame 6 is used to support the movable steel mold 2, the side steel mold 3 and the arch steel mold 7 to ensure their stability during the construction process.

[0023] The construction process is described below with a specific embodiment:

[0024] First, a combined steel formwork is used to support the bottom of the 40m southern ore unloading chamber wall with a height of 600mm to form the support conditions for the integral steel formwork trolley → laying the integral steel formwork trolley track → assembling and debugging the integral steel formwork trolley → pouring the integral steel formwork trolley support → curing before concrete demolding → demolding → concrete curing after demolding.

[0025] 1. Site preparation before support work:

[0026] Since the unloading chamber supports the use of an integral steel formwork trolley, the characteristics of the steel formwork trolley are short formwork time and good concrete forming. However, it is a whole, so in order to consider its movement, a temporary track is laid at the unloading station, and wheels that can move with the track are installed under the trolley. In order to better connect the trolley with the bottom plate and prevent slurry leakage caused by uneven bottom plate, before the first formwork is supported, the wall foundations on both sides of the unloading chamber are first supported with a combined steel formwork 600mm high, and then the two sides of the steel formwork trolley are close to the wall foundation for close formwork.

[0027] 2. Fabrication and installation of the integral steel formwork trolley for the 40m southern ore unloading chamber:

[0028] According to the size of the chamber, a steel mold trolley is made, which is 5.323m high, 6.98m wide and 5.4m long. The steel mold trolley uses 300mm*1200mm steel templates to make movable steel molds 2, side steel molds 3 and arch steel molds 7. Two jacks 9 are set in each row on the top of the trolley inner frame 6, and the jacks 9 use 40t jacks.

[0029] 3. Construction technology and methods of support for the southern unloading chamber of ore

[0030] 1. Formwork:

[0031] During the formwork, the mechanics and assistants shall be responsible for the work, and no unrelated personnel shall be allowed to enter the work surface. First, move the trolley to the formwork position and fix the bottom wheels to prevent movement. Then, the side steel formwork 3 of the wall is opened to the designed support size through the support rod 4 and fixed, and then the jack 9 is lifted up, and the size of the trolley arch is adjusted according to the designed section. After completion, the screws of each component are reinforced.

[0032] 2. On-site concrete support:

[0033] The concrete is mixed and processed on the ground. The mixed concrete is loaded into the concrete transport tank truck (the tank truck is 6m3, and can actually hold 5.5 m3) according to the mix ratio, and pulled to the concrete pump position at the southern ore unloading chamber connection. The concrete is pumped into the stabilized integral steel mold for pouring through the concrete pump. When pouring concrete, the integral steel mold is poured on both sides, with a layer height of 300 to 400mm, and the interval time between layered pouring is not greater than the initial setting time of the concrete.

[0034] When pouring concrete, pay attention to the correct use of concrete vibrators. Type 50 vibrators are equipped on site. Feed ports are set on the wall and arch of the integral steel formwork. The vibrators are inserted from the feed ports for vibration. The concrete vibrator should be inserted vertically or obliquely into the concrete and vibrated for a certain period of time. The concrete vibrator should be pumped up and down during vibration. Each support of 300-400mm high concrete is vibrated once. The use of the vibrator is operated by a skilled operator. After the concrete vibrator works continuously for half an hour, it should be stopped for a period of time to prevent excessive heating of the machine and damage to the machine parts. Use an electric vibrator to fully vibrate, and try to avoid the formwork. When supporting the arch, a baffle should be set to ensure that the concrete is poured densely. It is necessary to add a baffle for continuous pouring to prevent the arch from being poured in place and causing empty tops.

[0035] 3. Demolding:

[0036] When removing the mold, pay attention to the order of removing the mold. To ensure safe and orderly construction, the machine repair team will guide the operation on site. First, shrink the side steel mold 3 of the trolley wall toward the middle to complete the separation of the side steel mold 3 from the concrete. Then open the jack 7 to decompress it, so that the hinge of the steel mold arch opens downward to complete the demoulding of the arch. After each demoulding, move the trolley forward, clean the utility model and apply grease for maintenance. Then level the steel mold according to the design requirements and install the next mold. The steel mold overlaps the old concrete by 400mm, and the concrete is poured 5m long each time.

Claims

1. A self-adaptive integral steel mold trolley for mining, Features: It includes a trolley inner frame, two movable steel molds, two side steel molds, an arch support truss and an arch steel mold; the side steel molds are vertically arranged, and the two side steel molds are parallel; the trolley inner frame is placed between the two side steel molds, and the two side steel molds are respectively fixed on the two side walls of the trolley inner frame through multiple support rods; the bottom of the arch support truss is installed on the top of multiple rows of jacks, and the bottom of the multiple rows of jacks is fixed on the top of the trolley inner frame; the arch steel mold is installed on the top of the arch support truss; a movable steel mold is hinged on both sides of the arch steel mold, and the movable steel mold is driven to pivot by a hydraulic cylinder.

2. The self-adjustable integral steel mold trolley for mining according to claim 1, Features: A group of trolley wheels are respectively arranged on both sides of the bottom of the trolley inner frame for supporting on the track.

3. The self-adaptive integral steel mold trolley for mining according to claim 1, Features: One end of the hydraulic cylinder is hinged to the middle part of the inner wall of the movable steel mold, and the other end of the hydraulic cylinder is hinged to the arch supporting truss.

4. The self-adjustable integral steel mold trolley for mining according to claim 1, Features: A row of jacks is respectively arranged on both sides of the top of the inner frame of the trolley.

5. The self-adjustable integral steel mold trolley for mining according to claim 1, Features: The arch steel mold is hinged with the movable steel mold through a plurality of hinges.

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