Construction method and device for repairing steel-clad steel by breaking and removing local expanded door frame of equipment access door opening

Abstract

The invention discloses an equipment access door opening local expansion door frame breaking, repairing and steel-wrapping construction method in the technical field of door opening reconstruction construction, and the construction method comprises the following steps: forming a breaking notch in a door frame body, and dividing the door frame body into a breaking section and a non-breaking section; manufacturing a wrapping steel consisting of a U-shaped wrapping frame plate and a C-shaped side plate; the U-shaped frame wrapping plate and the C-shaped side plate are fixed to the door frame body through fasteners, and the C-shaped side plate is fixed to an opening of the U-shaped frame wrapping plate; and slurry is poured into a gap between the C-shaped side plate and the breaking notch. The notch is formed in the local part of the door opening, the U-shaped frame wrapping plate and the C-shaped side plate form the repairing and breaking notch, the gap is reserved between the C-shaped side plate and the breaking notch, after the steel-clad structure is installed, grouting filling is conducted on the gap, the door opening transformation difficulty is low, and the overall safety of a plant and the equipment entering efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of door hole reconstruction construction, in particular to a device access door hole local expansion door frame breaking repair package steel construction method and device. BACKGROUND

[0002] In the granulator plant and other industrial buildings, reinforced concrete frame door hole needs to meet the large equipment access requirements. In actual construction, the design size may not match the equipment main machine size due to the equipment access time later than the door hole main structure completion time, resulting in the door hole unable to accommodate the equipment passing. The traditional solution needs to break or remove the door hole structure in a large area, which not only has huge engineering quantity, long construction period, but also consumes a lot of manpower and material resources. The repair after breaking usually adopts conventional reinforcement means, which has the problems of low structure reinforcement efficiency and insufficient reliability, affecting the overall safety of the plant and the equipment access efficiency. SUMMARY

[0003] The purpose of the present application is to provide a device access door hole local expansion door frame breaking repair package steel construction method and device, which solves the problem of large engineering quantity and consumption of manpower and material resources in the existing device access door hole reconstruction construction method.

[0004] The present application realizes the above-mentioned purpose through the following technical scheme: The device access door hole local expansion door frame breaking repair package steel construction method comprises the following steps: 1) A breaking gap is formed on the door frame body, and the door frame body is divided into a breaking section and an unbroken section according to the breaking gap; 2) A package steel composed of a U-shaped frame wrapping plate and a C-shaped side plate is made, and the U-shaped frame wrapping plate has an opening corresponding to the breaking gap on one side of the middle part; 3) The U-shaped frame wrapping plate and the C-shaped side plate are fixed on the door frame body by fasteners, the connection between the fasteners and the U-shaped frame wrapping plate and the C-shaped side plate is fully welded, and the C-shaped side plate is fixed at the opening of the U-shaped frame wrapping plate to block the breaking gap, and a gap is formed between the C-shaped side plate and the breaking section; 4) Grouting is performed in the gap, and the part of the fastener protruding out of the surface of the C-shaped side plate of the package steel is cut off.

[0005] As a further optimization scheme of the present application, the package steel is made as follows: Two steel plates are taken as inner and outer side plates, C-shaped gaps corresponding to the breaking gap are formed on the inner and outer side plates, two connecting plates are arranged between the inner and outer side plates, the two connecting plates are respectively welded on the upper and lower sides of the C-shaped gap, and a plurality of ear plates are welded on the side of the inner and outer side plates away from the C-shaped gap, forming a U-shaped frame wrapping plate; The C-shaped side plate is made by welding multiple steel plates or bending a single steel plate, so that a vertical section and two inclined sections on the upper and lower sides of the vertical section are formed on the C-shaped side plate. After the U-shaped frame plate and the C-shaped side plate are fixed on the door frame body by the fasteners, the steel frame is formed.

[0006] As a further optimization scheme of the present application, during the fastening of the steel frame, fastening bolts and fastening anchors are respectively punched into the unbroken sections and the broken sections, leveling nut one and leveling nut two are respectively installed on the fastening bolts and the fastening anchors, and the positions of leveling nut one and leveling nut two are adjusted so that the fastening bolts penetrate the connecting plates, compression nut one is installed on the fastening bolts to fasten the connecting plates, the U-shaped frame plate is clamped on the door frame body, the two connecting plates are respectively fixed on the unbroken sections on the upper and lower sides of the broken sections, the ear plates arranged on the two sides of the door frame body are fastened by the tensioning bolts, the inner side plate and the outer side plate are fastened by the tensioning anchors, and the C-shaped side plate is embedded in the broken gap, so that the fastening anchors penetrate the C-shaped side plate, and compression nut two is installed on the fastening anchors to fasten the C-shaped side plate.

[0007] As a further optimization scheme of the present application, during the manufacturing of the steel frame, a first lifting lug is installed on the connecting plate on the upper side of the U-shaped frame plate, a second lifting lug is installed on the vertical section of the C-shaped side plate, and an inverted chain lifting mechanism for connecting the second lifting lug is hung on the first lifting lug, so as to lift the C-shaped side plate.

[0008] As a further optimization scheme of the present application, during the manufacturing of the C-shaped side plate, a grouting port is formed at the top of the upper inclined section of the C-shaped side plate, and when grouting, the grouting material is grouted into the gap through the flow guide, and after grouting, a steel plate is welded at the grouting port to block the grouting port.

[0009] The construction device for expanding the door frame, breaking and repairing the steel frame of the equipment access door hole comprises a steel frame arranged on a door frame body, the steel frame is composed of a U-shaped frame plate and a C-shaped side plate, a broken gap is formed on the door frame body, a broken section is arranged on the door frame body, the broken gap is located on the broken section, and the upper and lower sides of the broken gap are unbroken sections of the door frame body, a corresponding opening is arranged on one side of the middle part of the U-shaped frame plate of the steel frame, the C-shaped side plate is fixed at the opening of the U-shaped frame plate, the U-shaped frame plate and the C-shaped side plate are fixed on the door frame body by fasteners, a gap is formed between the C-shaped side plate and the broken section, and grouting material is grouted in the gap.

[0010] As a further optimization scheme of the present application, the U-shaped frame plate comprises an inner side plate and an outer side plate, one side of the inner side plate and the outer side plate is provided with a C-shaped notch corresponding to the broken notch, and two connecting plates are arranged between the inner side plate and the outer side plate, the two connecting plates are respectively welded on the upper and lower sides of the C-shaped notch, a plurality of ear plates are welded on the side of the inner side plate and the outer side plate away from the C-shaped notch, and the ear plates on the inner side plate correspond to the ear plates on the outer side plate one by one, the C-shaped side plate has a vertical section, and the upper and lower sides of the vertical section are bent to form two inclined sections along the C-shaped notch.

[0011] As a further optimization scheme of the present application, the fastener is divided into fastener one, fastener two and fastener three for fixing the U-shaped frame plate, and fastener four for fixing the C-shaped side plate; The fastener one is a pull bolt penetrating the pair of ear plates, the fastener two is a pull anchor bolt penetrating the inner side plate and the outer side plate, the fastener three comprises a fastening bolt penetrating the connecting plate and embedded in the unbroken section, the fastening bolt is threadedly connected with a leveling nut one and a pressing nut one, the leveling nut one and the pressing nut one are respectively located on the two sides of the connecting plate, the fastener four comprises a fastening anchor bolt penetrating the C-shaped side plate and embedded in the broken section, the fastening anchor bolt is threadedly connected with a leveling nut two and a pressing nut two, the leveling nut two and the pressing nut two are respectively located on the two sides of the C-shaped side plate, the vertical section is provided with a through hole one for the fastening anchor bolt to pass through, the inclined section is provided with a through hole two for the fastening anchor bolt to pass through, and the cross-sectional area of the through hole two is greater than that of the fastening anchor bolt.

[0012] As a further optimization scheme of the present application, the connecting plate on the upper side of the U-shaped frame plate is provided with a first lifting lug, the vertical section of the C-shaped side plate is provided with a second lifting lug, and the first lifting lug is provided with an inverted chain lifting mechanism for connecting the second lifting lug.

[0013] As a further optimization scheme of the present application, the top of the upper inclined section of the C-shaped side plate is provided with a grouting port, and the construction device further comprises a flow guide for guiding the grout in the grouting port.

[0014] The present application has the following advantages: The present application opens a broken notch in the local area of the door opening, repairs the broken notch by the special steel package structure composed of the U-shaped frame plate and the C-shaped side plate, leaves a gap between the C-shaped side plate and the broken notch for leveling and pressing the C-shaped side plate, sets a grouting port between the U-shaped frame plate and the C-shaped side plate, grouts and fills the gap after the installation of the steel package structure, reduces the difficulty of door opening reconstruction, saves manpower and material resources, and ensures that the reconstructed equipment import and export door opening is solid and reliable, improves the overall safety of the plant and the efficiency of the equipment access. The present application tightens the ear plate and the inner plate and the outer plate of the U-shaped frame plate through the fastening bolt and the fastening anchor, cooperates with the leveling nut and the compression nut to fasten the connecting plate and the C-shaped side plate, and the U-shaped frame plate and the C-shaped side plate have good leveling and compression effects, and the steel structure can play a strong reinforcing role on the door hole. The present application installs the first lifting lug on the U-shaped frame plate and installs the second lifting lug on the C-shaped side plate, lifts the relatively heavy C-shaped side plate through the chain hoist lifting mechanism between the first lifting lug and the second lifting lug, further saves manpower, and reduces the difficulty of steel package installation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The flowchart of the construction method of the present application is shown in the figure. Figure 2 The overall structure schematic diagram of the construction device of the present application is shown in the figure. Figure 3 The split structure schematic diagram of the steel package of the present application is shown in the figure. Figure 4 The sectional view of the steel package of the present application is shown in the figure. Figure 5 The Figure 4 The enlarged view of A in the figure. Figure 6 The Figure 4 The enlarged view of B in the figure. Figure 7 The working state schematic diagram of the construction device of the present application when grouting material is shown in the figure. In the figure: 1, U-shaped frame plate; 2, C-shaped side plate; 3, fastener one; 4, fastener two; 5, fastener three; 6, fastener four; 7, chain hoist lifting mechanism; 8, flow guide; 11, inner plate; 12, outer plate; 13, connecting plate; 14, ear plate; 15, first lifting lug; 21, vertical section; 22, inclined section; 23, through hole one; 24, through hole two; 25, second lifting lug; 26, grouting port; 51, fastening bolt; 52, leveling nut one; 53, compression nut one; 61, fastening anchor; 62, leveling nut two; 63, compression nut two; D, door frame body; S1, broken section; S2, unbroken section; G, gap. DETAILED DESCRIPTION

[0016] It is necessary to point out here that the following detailed description is only used to further illustrate the present application, and cannot be understood as limiting the protection scope of the present application, and the skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0017] During the construction of the reinforced concrete frame doorway of a granulator plant, the following problems may arise: Generally, the granulator arrives on site relatively late, and the doorway frame has already been completed before the granulator arrives. Because this situation was not considered in the design, and the dimensions of the granulator designed by the designer may differ from the actual dimensions of the purchased granulator, the main unit of the granulator may be larger than the doorway. Therefore, the granulator cannot enter the plant, and the only solution is to modify the doorway by removing the obstructing portion, reinforcing the demolished area, and repairing the damaged doorway. Existing doorway modification methods require complete demolition or large-scale demolition of the doorway, resulting in a large workload, long construction time, and significant consumption of manpower and resources.

[0018] First Embodiment like Figures 1-6 As shown, this embodiment relates to a method for partially expanding and repairing the steel frame of an equipment entrance / exit opening. When the size of the entrance / exit of a granulator plant is insufficient for the granulator to enter, this embodiment can be used to enlarge the reinforced concrete entrance / exit opening, followed by steel reinforcement for the doorway modification. It should be noted that this embodiment uses a granulator as an example to illustrate this construction method; however, this method can also be applied to the modification of entrance / exit openings for other equipment. The construction method includes the following steps: Step 1: Make a notch in the door frame body D of the doorway. Divide the door frame body D into a broken section S1 and two unbroken sections S2, with the upper and lower edges of the notch as the boundary. The broken section S1 is located between the two unbroken sections S2.

[0019] Step 2: Fabricate the steel-clad frame consisting of a U-shaped frame plate 1 and C-shaped side plates 2. An opening corresponding to the breaking notch is made on one side of the middle of the U-shaped frame plate 1. The depth of this opening is shallower than the depth of the breaking notch to provide sufficient space for the installation of the connecting plate 13 of the U-shaped frame plate 1 and the C-shaped side plates 2.

[0020] like Figure 3 As shown, the U-shaped frame plate 1 includes an inner side plate 11 and an outer side plate 12. Both the inner side plate 11 and the outer side plate 12 have a C-shaped notch on one side corresponding to the breaking notch. Two connecting plates 13 are provided between the inner side plate 11 and the outer side plate 12, respectively welded to the upper and lower sides of the C-shaped notch. Multiple ear plates 14 are welded to the side of the inner side plate 11 and the outer side plate 12 away from the C-shaped notch, with each ear plate 14 on the inner side plate 11 corresponding to one on the outer side plate 12. The C-shaped side plate 2 has a vertical section 21, and the vertical section 21 of the C-shaped side plate 2 bends along the C-shaped notch on both the upper and lower sides to form two inclined sections 22.

[0021] Step three, fix the U-shaped frame plate 1 and the C-shaped side plate 2 on the door frame body D through the fasteners, full weld the connection between the fasteners and the U-shaped frame plate 1 and the C-shaped side plate 2, and fix the C-shaped side plate 2 at the opening of the U-shaped frame plate 1 to block the broken gap, and form a gap G between the C-shaped side plate 2 and the broken section S1.

[0022] The fasteners are divided into four groups, specifically one group of fasteners one 3 for fixing the ear plates 14 of the U-shaped frame plate 1, one group of fasteners two 4 for fixing the inner side plate 11 and the outer side plate 12, one group of fasteners three 5 for fixing the connecting plate 13, and one group of fasteners four 6 for fixing the C-shaped side plate 2.

[0023] Please refer to Figures 3-6 , the fasteners one 3 are a pair of pull bolts penetrating the pair of ear plates 14, the fasteners two 4 are a pair of pull anchors penetrating the inner side plate 11 and the outer side plate 12, the fasteners three 5 include fastening bolts 51 penetrating the connecting plate 13 and embedded in the unbroken section S2, the fastening bolts 51 are threadedly connected with leveling nuts one 52 and pressing nuts one 53, the leveling nuts one 52 and the pressing nuts one 53 are respectively located on both sides of the connecting plate 13, the fasteners four 6 include fastening anchors 61 penetrating the C-shaped side plate 2 and embedded in the broken section S1, the fastening anchors 61 are threadedly connected with leveling nuts two 62 and pressing nuts two 63, the leveling nuts two 62 and the pressing nuts two 63 are respectively located on both sides of the C-shaped side plate 2, the vertical section 21 is provided with a through hole one 23 for the fastening anchors 61 to pass through, and the inclined section 22 is provided with a through hole two 24 for the fastening anchors 61 to pass through.

[0024] Step four, pour grout into the gap G, and cut off the part of the fasteners four 6 protruding out of the surface of the C-shaped side plate 2. In addition, if the fasteners three 5 hinder the granulation mechanism, the part of the fasteners three 5 protruding out of the surface of the connecting plate 13 is also cut off. The surface of the C-shaped side plate 2 specifically refers to the side of the C-shaped side plate 2 away from the inner side plate 11 and the outer side plate 12, and the surface of the connecting plate 13 specifically refers to the side of the connecting plate 13 away from the inner side plate 11 and the outer side plate 12.

[0025] The manufacturing method of the C-shaped side plate 2 is as follows: Two steel plates are taken as the inner plate 11 and the outer plate 12, C-shaped notches corresponding to the broken notches are opened on the inner plate 11 and the outer plate 12, two connecting plates 13 are arranged between the inner plate 11 and the outer plate 12, the two connecting plates 13 are respectively welded on the upper and lower sides of the C-shaped notches, a plurality of ear plates 14 are welded on the sides of the inner plate 11 and the outer plate 12 away from the C-shaped notches, a first lifting lug 15 is installed on the connecting plate 13 on the upper side of the U-shaped frame plate 1, and the U-shaped frame plate 1 is formed. The C-shaped side plate 2 is made by welding a plurality of steel plates or bending a single steel plate, so that a vertical section 21 and two inclined sections 22 located on the upper and lower sides of the vertical section 21 are formed on the C-shaped side plate 2, a second lifting lug 25 is installed on the vertical section 21 of the C-shaped side plate 2, and a grouting port 26 is opened at the top of the upper inclined section 22 of the C-shaped side plate 2. After the U-shaped frame plate 1 and the C-shaped side plate 2 are fixed on the door frame body D by fasteners, the steel frame is formed.

[0026] During the fastening of the steel frame, the fastening bolt 51 and the fastening anchor bolt 61 are respectively punched into the unbroken section S2 and the broken section S1, the leveling nut one 52 and the leveling nut two 62 are respectively installed on the fastening bolt 51 and the fastening anchor bolt 61, and the positions of the leveling nut one 52 and the leveling nut two 62 are adjusted. The U-shaped frame plate 1 is clamped on the door frame body D, so that the two connecting plates 13 are respectively close to the unbroken sections S2 on the upper and lower sides of the broken notches, the fastening bolt 51 penetrates through the connecting plate 13, and the connecting plate 13 is positioned and leveled by the leveling nut one 52. The compression nut one 53 is installed on the fastening bolt 51 to fasten the connecting plate 13, and the two connecting plates 13 are respectively fixed on the unbroken sections S2 on the upper and lower sides of the broken section S1.

[0027] The ear plates 14 arranged on the two sides of the door frame body D are fastened by the tensioning bolt, and the inner plate 11 and the outer plate 12 are fastened by the tensioning anchor bolt. The C-shaped side plate 2 is embedded in the broken notch, the C-shaped side plate 2 is positioned and leveled by the leveling nut two 62, the fastening anchor bolt 61 penetrates through the C-shaped side plate 2, the compression nut two 63 is installed on the fastening anchor bolt 61 to fasten the C-shaped side plate 2. Then, the connection between the C-shaped side plate 2 and the inner plate 11, the outer plate 12 and the two connecting plates 13 is welded together. The gap between the top of the upper connecting plate 13 of the steel frame and the door frame body D is full-welded, and the gap between the bottom of the lower connecting plate 13 of the steel frame and the door frame body D is full-welded. In addition, in some other embodiments, only the connecting plate 13 can be fastened by using the bolt.

[0028] When the grouting material is injected, the grouting material is injected into the gap G through the flow guide 8, after the grouting material is injected, a steel plate is welded at the grouting port 26, the connection between the steel plate and the inclined section 22 on the upper side of the C-shaped side plate 2 and the connection between the steel plate and the connecting plate 13 of the U-shaped frame plate 1 are full-welded, so as to realize the plugging of the grouting port 26. As shown in Figure 7 The flow guide 8 is preferably a dustpan special for grouting.

[0029] A chain hoist 7 for connecting the second lifting lug 25 is hung on the first lifting lug 15. When installing the C-shaped side plate 2, the upper end of the chain hoist 7 is hung on the first lifting lug 15, and the lower end of the chain hoist 7 is connected with the second lifting lug 25 on the C-shaped side plate 2, and the C-shaped side plate 2 is hoisted by operating the chain hoist 7. The chain hoist 7 is preferably a hand-operated hoist. In this embodiment, the first lifting lug 15 is not cut off after the construction is completed, and is left for later use, such as maintenance. The second lifting lug 25 is cut off after the construction is completed. In other embodiments, if the first lifting lug 15 blocks the equipment from entering or exiting the door opening, the first lifting lug 15 can also be cut off after the construction is completed.

[0030] Second embodiment As shown in Figures 2-6 , the present embodiment relates to a device for expanding the door frame and repairing the broken part of the door frame. The construction device is suitable for the construction method in the previous embodiment. The construction device comprises a package steel arranged on the door frame body D, the package steel is composed of a U-shaped frame wrapping plate 1 and a C-shaped side plate 2, a broken part is formed on the door frame body D, a broken section S1 is arranged on the door frame body D, the broken part is located on the broken section S1, and the upper and lower sides of the broken part are the unbroken sections S2 of the door frame body D, the U-shaped frame wrapping plate 1 is provided with an opening corresponding to the broken part on one side of the middle part, the C-shaped side plate 2 is fixed at the opening of the U-shaped frame wrapping plate 1, the U-shaped frame wrapping plate 1 and the C-shaped side plate 2 are fixed on the door frame body D by fasteners, a gap G is formed between the C-shaped side plate 2 and the broken section S1, and the gap G is filled with slurry.

[0031] The U-shaped frame wrapping plate 1 comprises an inner side plate 11 and an outer side plate 12, one side of the inner side plate 11 and one side of the outer side plate 12 are provided with a C-shaped notch corresponding to the broken part, two connecting plates 13 are arranged between the inner side plate 11 and the outer side plate 12, the two connecting plates 13 are respectively welded on the upper and lower sides of the C-shaped notch, a plurality of ear plates 14 are welded on one side of the inner side plate 11 and one side of the outer side plate 12 away from the C-shaped notch, the ear plates 14 on the inner side plate 11 correspond to the ear plates 14 on the outer side plate 12 one by one, the C-shaped side plate 2 has a vertical section 21, and two inclined sections 22 are formed on the upper and lower sides of the vertical section 21 along the C-shaped notch.

[0032] The fasteners include fastener one 3, fastener two 4 and fastener three 5 for fixing the U-shaped frame wrapping plate 1, and fastener four 6 for fixing the C-shaped side plate 2; The fastener one 3 is a pull bolt penetrating the pair of ears 14, the fastener two 4 is a pull anchor penetrating the inner side plate 11 and the outer side plate 12, the fastener three 5 includes a fastening bolt 51 penetrating the connecting plate 13 and embedded in the unbroken section S2, the fastening bolt 51 is threadedly connected with a leveling nut one 52 and a pressing nut one 53, the leveling nut one 52 and the pressing nut one 53 are respectively located on the two sides of the connecting plate 13, the fastener four 6 includes a fastening anchor 61 penetrating the C-shaped side plate 2 and embedded in the broken section S1, the fastening anchor 61 is threadedly connected with a leveling nut two 62 and a pressing nut two 63, the leveling nut two 62 and the pressing nut two 63 are respectively located on the two sides of the C-shaped side plate 2, the vertical section 21 is provided with a through hole one 23 for the fastening anchor 61 to penetrate, the inclined section 22 is provided with a through hole two 24 for the fastening anchor 61 to penetrate, the cross-sectional area of the through hole two 24 is greater than the cross-sectional area of the fastening anchor 61.

[0033] In the embodiment, the cross section of the through hole two 24 is in the shape of a waist hole. In other embodiments, the through hole two 24 can also be provided in an elliptical or other elongated shape, as long as it can ensure that the inclined fastening anchor 61 can be inserted. The through hole two 24 is in an elongated shape, which can not only ensure that the fastening anchor 61 can be smoothly inserted, but also enable the inclined section 22 to be in large-area contact with the leveling nut two 62, thereby improving the positioning and leveling effect.

[0034] The connecting plate 13 on the upper side of the U-shaped frame plate 1 is provided with a first lifting lug 15, the vertical section 21 of the C-shaped side plate 2 is provided with a second lifting lug 25, and the first lifting lug 15 is provided with a chain hoist lifting mechanism 7 for connecting the second lifting lug 25. The chain hoist lifting mechanism 7 is preferably a hand-operated hoist, which can be used to hoist the C-shaped side plate 2, thereby reducing the construction difficulty and saving the workers' work burden. In the embodiment, the door frame body D of the door opening is relatively thin, and in the case that the door frame body D is relatively thick, the C-shaped side plate 2 is more heavy, and the use of the above-mentioned hand-operated hoist can significantly save the workers' physical strength. In addition, the chain hoist lifting mechanism 7 can also be installed on a crane, and the lower end of the chain hoist lifting mechanism 7 is connected with the first lifting lug 15, so that the U-shaped frame plate 1 can be hoisted, thereby further saving manpower. In addition, as shown in Figs. 1 and 2, the upper inclined section 22 of the C-shaped side plate 2 is provided with a grouting port 26, and the construction device further includes a flow guide 8 for guiding the slurry in the grouting port 26. The flow guide 8 is preferably a special-purpose sieve for grouting, which can guide the slurry into the gap G and reinforce the broken gap of the door opening. After grouting, a steel plate is welded on the grouting port to block the ladle. Figure 3 and 7 As shown in Figs. 1 and 2, the upper inclined section 22 of the C-shaped side plate 2 is provided with a grouting port 26, and the construction device further includes a flow guide 8 for guiding the slurry in the grouting port 26. The flow guide 8 is preferably a special-purpose sieve for grouting, which can guide the slurry into the gap G and reinforce the broken gap of the door opening. After grouting, a steel plate is welded on the grouting port to block the ladle.

[0035] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A method for partially widening and repairing the steel frame of an equipment entrance / exit gate, characterized in that... Includes the following steps: 1) A breaking notch is made in the door frame body, and the door frame body is divided into a breaking section and an unbreaking section according to the breaking notch; 2) Construct a steel-clad frame consisting of a U-shaped frame plate (1) and a C-shaped side plate (2), wherein the U-shaped frame plate (1) of the steel-clad frame has an opening on one side of the middle part corresponding to the breaking notch; 3) Fix the steel plate to the door frame body with fasteners, fully weld the connection between the fasteners and the steel plate, and fix the C-shaped side plate (2) at the opening of the U-shaped frame plate (1), forming a gap between the C-shaped side plate (2) and the breaking section. 4) Inject grout into the gap and cut off the part of the fastener that protrudes beyond the surface of the steel C-shaped side plate (2).

2. The method for partially expanding and repairing the steel frame of the equipment entrance / exit gate according to claim 1, characterized in that, The method for manufacturing the steel jacket is as follows: Two steel plates are used as inner plate (11) and outer plate (12). C-shaped notches corresponding to the breaking notches are made on the inner plate (11) and outer plate (12). Two connecting plates (13) are set between the inner plate (11) and outer plate (12). The two connecting plates (13) are welded to the upper and lower sides of the C-shaped notches respectively. Multiple ear plates (14) are welded on the side of the inner plate (11) and outer plate (12) away from the C-shaped notches to form a U-shaped frame plate (1). The C-shaped side plate (2) is made by welding multiple steel plates or bending a single steel plate, so that a vertical section (21) and two inclined sections (22) located on the upper and lower sides of the vertical section (21) are formed on the C-shaped side plate (2). After the U-shaped frame plate (1) and the C-shaped side plate (2) are fixed to the door frame body by fasteners, the steel cladding is formed.

3. The method for partially expanding and repairing the steel frame of the equipment entrance / exit gate according to claim 2, characterized in that: During the process of tightening the steel plate, fastening bolts (51) and fastening anchors (61) are driven into the unbroken section and the broken section respectively. Leveling nuts one (52) and leveling nuts two (62) are installed on the fastening bolts (51) and the fastening anchors (61) respectively, so that the fastening bolts (51) penetrate the connecting plate (13). A clamping nut one (53) is installed on the fastening bolts (51) to tighten the connecting plate (13), so that the two connecting plates (13) are fixed on the unbroken sections on the upper and lower sides of the broken section respectively. The paired ear plates (14) are tightened by tie bolts, and the inner side plate (11) and the outer side plate (12) are tightened by tie anchors. The C-shaped side plate (2) is embedded into the broken gap, so that the fastening anchors (61) penetrate the C-shaped side plate (2). A clamping nut two (63) is installed on the fastening anchors (61) to tighten the C-shaped side plate (2).

4. The method for partially expanding and repairing the steel frame of the equipment entrance / exit gate according to claim 2, characterized in that: When making the steel frame, a first lifting lug (15) is installed on the connecting plate (13) on the upper side of the U-shaped frame plate (1), and a second lifting lug (25) is installed on the vertical section (21) of the C-shaped side plate (2). A chain hoisting mechanism (7) for connecting the second lifting lug (25) is suspended on the first lifting lug (15) to hoist the C-shaped side plate (2).

5. The method for partially expanding and repairing the steel frame of the equipment entrance / exit gate according to claim 2, characterized in that: When making the C-shaped side plate (2), a grouting port (26) is opened at the top of the inclined section (22) on the upper side of the C-shaped side plate (2). When grouting, the grout is injected into the gap through the guide (8).

6. A construction device for partially widening and repairing a door frame in an equipment entry / exit gate, the device comprising a steel-clad frame installed on the door frame body, characterized in that: The construction device is applicable to the construction method of any one of claims 1-5. The steel frame is composed of a U-shaped frame plate (1) and a C-shaped side plate (2). A breaking notch is provided on the door frame body. A breaking section is provided on the door frame body. The breaking notch is located on the breaking section. The upper and lower sides of the breaking notch are the unbroken sections of the door frame body. The U-shaped frame plate (1) of the steel frame is provided with an opening on one side of the middle part corresponding to the breaking notch. The C-shaped side plate (2) is fixed at the opening of the U-shaped frame plate (1). The U-shaped frame plate (1) and the C-shaped side plate (2) are fixed on the door frame body by fasteners. A gap is formed between the C-shaped side plate (2) and the breaking section. Grout is injected into the gap.

7. The equipment entry / exit door frame partial expansion and repair steel-cladding construction device according to claim 6, characterized in that: The U-shaped frame plate (1) includes an inner side plate (11) and an outer side plate (12). Both the inner side plate (11) and the outer side plate (12) have a C-shaped notch on one side corresponding to the breaking notch. Two connecting plates (13) are provided between the inner side plate (11) and the outer side plate (12). The two connecting plates (13) are welded to the upper and lower sides of the C-shaped notch respectively. Multiple ear plates (14) are welded to the side of the inner side plate (11) and the outer side plate (12) away from the C-shaped notch. The ear plates (14) on the inner side plate (11) correspond one-to-one with the ear plates (14) on the outer side plate (12). The C-shaped side plate (2) has a vertical section (21). The vertical section (21) bends along the C-shaped notch on both the upper and lower sides to form two inclined sections (22).

8. The equipment entry / exit door frame partial expansion and repair steel-cladding construction device according to claim 7, characterized in that: The fasteners are divided into fastener one (3), fastener two (4) and fastener three (5) for fixing the U-shaped frame plate (1), and fastener four (6) for fixing the C-shaped side plate (2). The first fastener (3) is a tie bolt that penetrates the paired ear plates (14); the second fastener (4) is a tie anchor that penetrates the inner side plate (11) and the outer side plate (12); the third fastener (5) includes a fastening bolt (51) that penetrates the connecting plate (13) and is embedded in the unbroken section, and the fastening bolt (51) is threaded with a leveling nut (52) and a clamping nut (53), and the leveling nut (52) and the clamping nut (53) are located on both sides of the connecting plate (13); the fourth fastener (6) includes a through C-type The side plate (2) is embedded with a fastening anchor (61) of the breaking section. The fastening anchor (61) is threaded with a leveling nut (62) and a clamping nut (63). The leveling nut (62) and the clamping nut (63) are located on both sides of the C-shaped side plate (2). The vertical section (21) is provided with a through hole (23) for the fastening anchor (61) to pass through. The inclined section (22) is provided with a through hole (24) for the fastening anchor (61) to pass through. The cross-sectional area of ​​the through hole (24) is larger than that of the fastening anchor (61).

9. The equipment entry / exit door frame partial expansion and repair steel-cladding construction device according to claim 7, characterized in that: The U-shaped frame plate (1) has a first lifting lug (15) on the connecting plate (13) on the upper side, and the C-shaped side plate (2) has a second lifting lug (25) on the vertical section (21). The first lifting lug (15) has a chain hoisting mechanism (7) for connecting the second lifting lug (25).

10. The equipment entry / exit door frame partial expansion and repair steel-cladding construction device according to claim 7, characterized in that: The top of the inclined section (22) on the upper side of the C-shaped side plate (2) is provided with a grouting port (26), and the construction device also includes a guide (8) for backflowing grout at the grouting port (26).

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