Silo slip form construction device

Abstract

The utility model discloses a silo slip-form construction device, which relates to the technical field of slip-form construction and comprises a hydraulic device lifting system connected with a formwork system and an outer operating platform. The template system comprises an outer template and an inner template; the hydraulic device lifting system comprises a plurality of lifting frames, a hydraulic jack and a supporting rod; a cavity defined by the outer formwork and the inner formwork is used for pouring concrete, the supporting rod is fixed in the cavity between the outer formwork and the inner formwork, one side of the lifting frame is connected with the outer formwork, the other side of the lifting frame is connected with the inner formwork, the hydraulic jack is fixed to the lifting frame, and the supporting rod penetrates through the hydraulic jack and the outer operation platform to be connected to the outer side of the outer formwork. The supporting trusses are connected with the lifting frame stand columns, reinforcing channel steel is additionally arranged, the interior of the formwork is further supported, batten plywood is laid and guardrails are arranged at the positions, close to the formwork, of the upper portions of the supporting trusses, so that an inner operation platform is formed, and operation of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of shelves, in particular to a silo slipform construction device. Background Art

[0002] Slipform construction is a construction method that uses a certain amount of power to make the formwork system slide along the surface of the poured concrete, and then continues to cast concrete. The construction method is to install the slipform device in place on the ground in advance according to the plane shape of the construction object. As the steel bars in the formwork are continuously tied and the concrete is poured in layers, the slipform device is slid off the ground and continuously slid upward by hydraulic lifting equipment until it reaches the designed height. The existing slipform construction device is enclosed by inner and outer formwork to form the plane shape of the construction object, and then fixed by a circle. The fixing method is relatively simple and lacks internal support. In addition, the slipform construction device is a complex device, and more auxiliary equipment needs to be arranged during construction. How to make full use of limited space also needs to be solved.

[0003] For this purpose we provide a silo slipform construction device. Utility Model Content

[0004] The utility model aims to provide a silo slipform construction device to solve the problems in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silo slipform construction device, comprising a hydraulic device lifting system and an external operating platform connected to a formwork system; the formwork system comprises an outer formwork and an inner formwork; the hydraulic device lifting system comprises a plurality of lifting frames, a hydraulic jack and a support rod; the cavity enclosed between the outer formwork and the inner formwork is used for pouring concrete, the support rod is fixed in the cavity between the outer formwork and the inner formwork, the lifting frame is connected to the outer formwork on one side and to the inner formwork on the other side, the hydraulic jack is fixed on the lifting frame, the support rod passes through the hydraulic jack, and the external operating platform is connected to the outside of the outer formwork; a supporting truss is provided in the closed ring enclosed by the inner formwork.

[0006] Further preferably, the supporting truss comprises an upper longitudinal beam, a lower longitudinal beam, an upper cross beam, a lower cross beam and a chord, the upper longitudinal beam is connected to the upper cross beam, the lower longitudinal beam is connected to the lower cross beam, the upper longitudinal beam and the lower longitudinal beam and the lower cross beam, the upper cross beam and the lower cross beam are all connected through a chord, and the end of the supporting truss is welded and connected to the column of the lifting frame through a reinforcing channel steel.

[0007] Preferably, the structures of the upper longitudinal beam, the lower longitudinal beam, the upper cross beam and the lower cross beam are double-jointed channel steels.

[0008] Preferably, a wooden plywood is laid on the upper side of the support truss close to the inner formwork, a guardrail is provided on the outer side of the wooden plywood, and a safety net is hung on the guardrail.

[0009] Preferably, a hydraulic control cabinet is fixed to the middle part of the support truss through a channel steel, and the hydraulic control cabinet is connected to a plurality of oil distributors through a high-pressure oil pump, and each of the oil distributors is connected to a plurality of the hydraulic jacks.

[0010] Preferably, a concrete placing machine is also provided in the middle of the supporting truss, and the concrete placing machine is connected to a plurality of rotatable and telescopic chutes.

[0011] Preferably, an outer hanger is provided below the outer operating platform, and an inner hanger is provided below the supporting truss.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. The utility model sets a supporting truss in the closed area inside the inner formwork, the supporting truss is connected to the lifting frame column and reinforced channel steel is added to further support the inside of the formwork, and wooden plywood and guardrails are laid on the upper part of the supporting truss near the formwork to form an inner operating platform for easy operation by staff.

[0014] 2. A hydraulic control cabinet is set on the supporting truss. The hydraulic control cabinet is connected to several oil distributors through a high-pressure oil pump. The oil distributors are connected to multiple hydraulic jacks. The hydraulic jacks work synchronously through the control of the hydraulic control cabinet and the oil distributor.

[0015] 3. A concrete placing machine is installed on the supporting truss. The concrete placing machine is connected with a number of rotatable and retractable chutes to facilitate the pouring of concrete as the silo rises.

[0016] 4. An external hanger is provided under the external operating platform and an internal hanger is provided under the supporting truss to facilitate the repair of the inner and outer walls of the silo after the device is lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the support truss node of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection between the support truss and the lifting frame of the utility model;

[0021] Figure 4 This is a schematic diagram of the plan layout of the hydraulic control cabinet of the utility model;

[0022] Figure 5 This is a schematic diagram of the layout of the concrete placing machine of the utility model;

[0023] Figure 6 It is a partial schematic diagram of the utility model.

[0024] Description of reference numerals:

[0025] 1-external operating platform; 2-external formwork; 3-inner formwork; 4-support truss; 5-wood plywood; 6-guardrail; 7-hydraulic control cabinet; 8-concrete placing boom; 9-chute; 10-external hanger; 11-inner hanger; 401-upper longitudinal beam; 402-lower longitudinal beam; 403-upper cross beam; 404-lower cross beam; 405-chord; 406-reinforcement channel steel. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1

[0028] like Figure 1-3 As shown, in order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silo slipform construction device, comprising a hydraulic device lifting system connected to a formwork system and an external operating platform 1; the formwork system comprises an outer formwork 2 and an inner formwork 3; the hydraulic device lifting system comprises a plurality of lifting frames, a hydraulic jack and a support rod; the cavity enclosed between the outer formwork 2 and the inner formwork 3 is used for pouring concrete, the support rod is fixed in the cavity between the outer formwork 2 and the inner formwork 3, one side of the lifting frame is connected to the outer formwork 2, and the other side is connected to the inner formwork 3, the hydraulic jack is fixed on the lifting frame, the support rod passes through the hydraulic jack, and the external operating platform 1 is connected to the outside of the outer formwork 2; a support truss 4 is provided in the closed ring enclosed by the inner formwork 3.

[0029] Furthermore, the support truss 4 includes an upper longitudinal beam 401, a lower longitudinal beam 402, an upper cross beam 403, a lower cross beam 404 and a chord 405. The upper longitudinal beam 401 is connected to the upper cross beam 403, the lower longitudinal beam 402 is connected to the lower cross beam 404, the upper longitudinal beam 401 and the lower longitudinal beam 402 and the lower cross beam 404, and the upper cross beam 403 and the lower cross beam 404 and the lower longitudinal beam 402 are all connected by the chord 405. The end of the support truss (4) is welded to the column of the lifting frame by reinforcing channel steel 406;

[0030] Furthermore, the structures of the upper longitudinal beam 401, the lower longitudinal beam 402, the upper cross beam 403 and the lower cross beam 404 are double-jointed channel steels.

[0031] Furthermore, a wooden plywood 5 is laid on the upper side of the support truss 4 close to the inner formwork 3 , a guardrail 6 is provided on the outer side of the wooden plywood 5 , and a safety net is hung on the guardrail 6 .

[0032] The inner and outer formworks are assembled according to the cross-sectional profile of the construction object and fixed by the inner and outer circumferences. After the hydraulic lifting system is assembled, the support truss 4 is assembled with the lifting frame of the hydraulic lifting system connected to the column of the inner formwork 3 as the connection point, and is gradually assembled from the center of the construction object to both ends. The assembled support truss 4 forms a support for the inner formwork 3 to make the structure more stable; the support truss 4 itself includes an upper longitudinal beam 401, a lower longitudinal beam 402, an upper cross beam 403, a lower cross beam 404 and a chord 405. The upper longitudinal beam 401 is connected to the upper cross beam 403, the lower longitudinal beam 402 is connected to the lower cross beam 404, and the upper longitudinal beam 401 is connected to the lower longitudinal beam 402 and the lower cross beam 404. 04, the upper crossbeam 403 and the lower crossbeam 404 and the lower longitudinal beam 402 are all connected by a chord 405, and the end crossbeams of the supporting truss 4 are fixed to the lifting frame columns by reinforcing channel steels 406, which are welded one horizontally and one vertically, and the upper longitudinal beam 401, the lower longitudinal beam 402, the upper crossbeam 403 and the lower crossbeam 404 are all composed of double-piece channel steels, which have more uniform internal pressure distribution and stronger bending and compression resistance. Further, on the assembled supporting truss 4, a wooden plywood 5 is laid near the edge of the inner formwork 3, and a guardrail 6 is arranged on the outside of the wooden plywood 5, and a safety net is hung on the guardrail 6, thereby forming an internal operating platform for use by staff.

[0033] Embodiment 2

[0034] In this embodiment, Figure 4 As shown, a hydraulic control cabinet 7 is fixed to the middle of the support truss 4 through a channel steel. The hydraulic control cabinet 7 is connected to several oil distributors through a high-pressure oil pump, and each oil distributor is connected to multiple hydraulic jacks. The hydraulic control cabinet 7 is fixed to the middle of the support truss 4 with a channel steel. The motor of the hydraulic control cabinet 7 drives the high-pressure oil pump, so that the high-pressure oil enters the hydraulic jack through the electromagnetic reversing valve, the oil distributor, the needle valve and the oil pipeline. The hydraulic jack drives the sliding template and the operating platform to climb up along the support rod under the action of oil pressure. When the hydraulic control cabinet 7 causes the electromagnetic reversing valve to reverse and return oil, the oil is discharged from the hydraulic jack and returned to the oil tank of the oil pump. Repeated oil inflow and oil return in this way will cause the hydraulic jack to drive the sliding template and the operating platform to rise continuously. All the equipment needed for the hydraulic device lifting system is fixed on the support truss 4 and rises with the operating platform.

[0035] Embodiment 3

[0036] In this embodiment, Figure 5As shown, a concrete distributor 8 is also provided in the middle of the support truss 4, and the concrete distributor 8 is connected to a plurality of rotatable and retractable chutes 9. The retractable chutes 9 are convenient for the staff to stand on the inner operating platform to operate. The concrete is pumped to the concrete distributor 8 and then poured through the chutes 9. Due to the use of pumping, the mixing station needs to consider the addition of pumping agents, and the concrete volume is large. The laboratory considers the hydration heat reaction in the process of making the mix ratio and reduces the proportion of water.

[0037] Embodiment 4

[0038] In this embodiment, Figure 6 As shown, an outer hanger 10 is provided under the outer operating platform 1, and an inner hanger 11 is provided under the supporting truss 4. The synchronous lifting of each cylinder sliding form system is ensured by the control of the hydraulic synchronous sliding system. If a cylinder wall with defects is found during the sliding process, it is easy to repair it manually to ensure that it meets the design requirements.

[0039] Construction technical requirements:

[0040] (1) Sliding speed and tube wall construction

[0041] The demoulding strength of concrete must be controlled within the penetration resistance range of 0.3 to 1.05 N / mm2. Under normal circumstances, the formwork is lifted 200 mm to 300 mm at a time, once every 0.5 hours, and 2 strokes each time. The slump of concrete is 200 mm ± 20 mm, the initial setting time is about 7 to 8 hours, and the final setting time is about 10 to 12 hours. In high temperature weather between 20 and 30 degrees, the slump control takes a high value of 220 mm.

[0042] According to the mix design report provided by the laboratory, the construction mix is ​​made on site according to the temperature (daytime, nighttime, rainy days) (time: 2-3 days); the parameters of the raw materials of the mix remain unchanged, and only the parameters of the retarder are adjusted in the on-site construction mix.

[0043] Sampling of concrete penetration resistance value:

[0044] Sampling tests must be carried out during the first pouring. During the first three days, two tests should be carried out each day in conjunction with the penetration resistance meter for physical verification. If the difference in the values ​​taken each time is not large, samples should be taken once a day thereafter.

[0045] (2) Material requirements:

[0046] Gravel: Use crushed stone, the maximum particle size should not exceed 1 / 8 of the wall thickness, so the stone particle size is 20-40mm or pumped concrete uses 5-20mm.

[0047] Cement: Ordinary Portland cement is generally used. If the temperature is too low, early strength cement is used. If the temperature is too high, slag cement is used. (It is recommended to use Zhonglian cement to ensure consistent color)

[0048] Admixture: It is advisable to use admixtures other than early strength type.

[0049] Use ground pumps for high-altitude concrete placement.

[0050] (3) Concrete pouring

[0051] The pouring should be carried out in a comprehensive, layered, symmetrical and evenly interlaced manner. Each pouring layer should be on the same horizontal plane, and the pouring direction should be changed in a planned manner. The layer thickness is generally 200mm to 300mm to avoid cold joints in one-way construction. The concrete should be vibrated with a direct-insertion vibrator. It should be vibrated as it is struck. No vibration should be missed or over-vibrated, and the formwork and steel bars should not be vibrated. The concrete should be poured evenly and orderly in layers in strict accordance with the specified single-layer sliding height.

[0052] The finished surface of each layer of concrete pouring should be 3 to 5 cm lower than the upper edge of the formwork. The strength of each layer of concrete out of the formwork should be checked in time, and it should be between 0.2-0.4MPa or penetration resistance of 0.3 to 1.05N / mm2. The on-site penetration resistance test data should be between 0.3N / mm 2 ~1.05N / mm 2 Sliding formwork can be carried out within the range, and the demoulding strength of concrete can be controlled by adjusting the sliding speed.

[0053] If the surface defects of the concrete are repaired, try to use concrete slurry to ensure consistent color.

[0054] Preventive measures for concrete grouting: When the formwork is raised one mold (300 high), grout leakage and grouting are likely to occur between the formwork and the cylinder wall. The following preventive measures are proposed: Nail a sponge strip at the bottom of the formwork. If the above measures are not effective, send a dedicated person to clean the leaking and grouting on the surface of the initially set concrete with water pipes on the outer hanger 10 and the inner hanger 11.

[0055] (4) Vibration method:

[0056] Vibrate once every 400mm along the cylinder wall, insert quickly and withdraw slowly, until the bubbles are completely eliminated.

[0057] (5) Concrete curing:

[0058] After demoulding, the concrete should be cured after 4 hours by applying curing agent.

[0059] (6) Stop-slip measures and treatment of construction joints:

[0060] To ensure the quality of the project, continuous construction should be given priority. If construction must be suspended due to weather or other special reasons, the following measures should be taken:

[0061] The concrete is poured on a flat surface; after stopping the pouring of concrete, it should still be lifted once every 1.5 to 2 hours, and this should be continued for more than 4 hours until the formwork no longer sticks.

[0062] 1) For horizontal construction joints caused by typhoons, heavy rains and other weather conditions, some steel bars are inserted before the concrete solidifies to increase the bonding strength with the next layer of concrete.

[0063] 2) For horizontal construction joints that stop sliding due to adjustment of the thickness of the steel formwork due to thinning of the wall thickness, remove the steel formwork and roughen it as required.

[0064] In addition, all equipment, devices, components and structures must undergo design calculation and inspection to meet design requirements.

[0065] In summary, the utility model sets a support truss 4 in the closed area within the inner formwork 3, the support truss 4 is connected to the lifting frame column and reinforced channel steel is added to further support the inside of the formwork, and wooden plywood 5 and guardrails 6 are laid on the upper part of the support truss 4 near the formwork to form an inner operating platform for easy operation by staff; a hydraulic control cabinet 7 is set on the support truss 4, the hydraulic control cabinet 7 is connected to a plurality of oil distributors through a high-pressure oil pump, and the oil distributors are connected to a plurality of hydraulic jacks, and the hydraulic jacks are controlled by the hydraulic control cabinet 7 and the oil distributor to make the hydraulic jacks work synchronously; a concrete placing machine 8 is set on the support truss 4, and the concrete placing machine 8 is connected to a plurality of rotatable and retractable chutes 9, which is convenient for pouring concrete as the silo rises; an outer hanger 10 is provided under the outer operating platform 1, and an inner hanger 11 is provided under the support truss 4, which is convenient for repairing the inner and outer walls of the silo after the device is lifted.

[0066] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A silo slipform construction device, characterized in that: It includes a hydraulic lifting system and an external operating platform (1) connected to the formwork system; The template system comprises an outer template (2) and an inner template (3); The hydraulic device lifting system includes a number of lifting frames, hydraulic jacks and support rods; The cavity enclosed between the outer formwork (2) and the inner formwork (3) is used for pouring concrete, the support rod is fixed in the cavity between the outer formwork (2) and the inner formwork (3), one side of the lifting frame is connected to the outer formwork (2), and the other side is connected to the inner formwork (3), the hydraulic jack is fixed on the lifting frame, the support rod passes through the hydraulic jack, and the external operating platform (1) is connected to the outside of the outer formwork (2); A supporting truss (4) is provided in the closed ring formed by the inner template (3).

2. A silo slipform construction device according to claim 1, characterized in that: The support truss (4) comprises an upper longitudinal beam (401), a lower longitudinal beam (402), an upper cross beam (403), a lower cross beam (404) and a chord (405); the upper longitudinal beam (401) is connected to the upper cross beam (403); the lower longitudinal beam (402) is connected to the lower cross beam (404); the upper longitudinal beam (401) and the lower longitudinal beam (402) and the lower cross beam (404) are connected by the chord (405); the end of the support truss (4) is welded to the column of the lifting frame by reinforcing channel steel (406).

3. A silo slipform construction device according to claim 2, characterized in that: The structures of the upper longitudinal beam (401), the lower longitudinal beam (402), the upper cross beam (403) and the lower cross beam (404) are double-jointed channel steels.

4. A silo slipform construction device according to claim 3, characterized in that: A wooden plywood board (5) is laid on the upper side of the support truss (4) close to the inner formwork (3), a guardrail (6) is provided on the outer side of the wooden plywood board (5), and a safety net is hung on the guardrail (6).

5. A silo slipform construction device according to claim 4, characterized in that: A hydraulic control cabinet (7) is fixed to the middle of the support truss (4) via channel steel, and the hydraulic control cabinet (7) is connected to a plurality of oil distributors via a high-pressure oil pump, and each of the oil distributors is connected to a plurality of the hydraulic jacks.

6. A silo slipform construction device according to claim 5, characterized in that: A concrete distributor (8) is also provided in the middle of the support truss (4), and the concrete distributor (8) is connected to a plurality of rotatable and telescopic chutes (9).

7. A silo slipform construction device according to any one of claims 1 to 6, characterized in that: An outer hanger (10) is provided below the outer operating platform (1), and an inner hanger (11) is provided below the supporting truss (4).

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