Hydraulic form removal system for fixed form

Abstract

The utility model relates to a fixed formwork hydraulic form removal system, a box girder mould comprises an outer mould and an inner mould, a box girder cavity is formed between the outer mould and the inner mould, the outer mould comprises an outer mould bottom plate, two outer mould side plates and two outer mould end plates, the two outer mould side plates are detachably connected to the left side and the right side of the outer mould bottom plate to define an outer mould groove, and the two outer mould end plates are detachably connected to the outer mould bottom plate. The end portions of the two outer molds are sealed at the two ends of the outer mold groove, the two ends of the inner mold are arranged on the two outer mold end plates in a penetrating mode, the outer mold bottom plate is supported on the mold base, the mold dismounting device comprises two telescopic pull frames distributed on the two sides of the mold base, and each telescopic pull frame comprises a fixing frame and a telescopic rod with one end hinged to the fixing frame. The other end of the telescopic rod is hinged to the outer mold side plate, an inclined sliding rail is arranged on the mold base, the end, facing the outer plate, of the inclined sliding rail is high, the other end of the inclined sliding rail is low, and the lower end of the outer mold side plate is connected to the inclined sliding rail in a sliding mode. The die sinking device has the advantages of being capable of carrying out inclined downward die sinking and solving the problem that the surface of a box girder is prone to being damaged due to horizontal die sinking.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a fixed formwork hydraulic demoulding system. Background Art

[0002] The inner and outer molds are required to form the box girder. The outer mold is opened by sliding, which causes great damage to the box girder. The shrinkage or expansion of concrete during solidification (depending on the properties of concrete, some shrink, some expand) will affect the surface strength of the cast box girder. Utility Model Content

[0003] The first purpose of the utility model is to provide a fixed template hydraulic mold removal system capable of opening the mold obliquely downward, thereby solving the problem that the surface of the box beam is easily damaged by horizontal mold opening.

[0004] The second purpose of the utility model is to further provide a fixed formwork hydraulic demolding system whose cavity can change with the expansion and contraction of concrete, thereby solving the problem that the box girder cavity formed by the existing inner and outer molds of the box girder is fixed, which causes the surface strength of the box girder body to be affected when the concrete solidifies and expands or contracts.

[0005] The above technical problems are solved by the following technical solutions: a fixed formwork hydraulic demolding system, the box beam mold includes an outer mold and an inner mold located inside the outer mold, a box beam cavity is formed between the outer mold and the inner mold, the outer mold includes an outer mold bottom plate, two outer mold side plates and two outer mold end plates, the two outer mold side plates are detachably connected to the left and right sides of the outer mold bottom plate to form an outer mold groove, the two outer mold ends are closed at the two ends of the outer mold groove, the inner mold is a tubular structure, the two ends of the inner mold are passed through the two outer mold end plates, the outer mold bottom plate is supported on the mold base, and the demolding device includes two movable parts distributed on both sides of the mold base for one-to-one pulling of the two outer mold side plates A telescopic puller, the telescopic puller includes a fixed frame and a telescopic rod hinged on the fixed frame at one end, the other end of the telescopic rod is hinged with the outer mold side plate, the mold base is provided with a plurality of inclined slide rails extending in the left and right directions and distributed in the front and back directions, the inclined slide rail is higher at one end facing the outer plate and lower at the other end, and the lower end of the outer mold side plate is slidably connected to the inclined slide rail; the process of dismantling the box beam mold is as follows: when the concrete poured in the adjacent cavity is solidified to form a prefabricated box beam, the telescopic rod contracts to make the outer mold side plate move downward along the extension direction of the inclined track to achieve the disengagement of the outer mold side plate, and then remove the inner mold, and finally remove the outer mold end plate. The outer side plate is tilted downward and opened sideways, and the outer side surface of the box beam is a vertical surface. This demoulding method has a shearing effect in the process of disengaging the outer mold side plate, making the demoulding of the outer mold side plate labor-saving and reliable, and having little impact on the side surface of the box beam.

[0006] Preferably, the inclined slide rail is provided with an elongated sliding hole extending in the extending direction of the inclined slide rail, the elongated sliding hole is a through hole, the outer mold side plate is provided with a supporting foot supported on the inclined slide rail, the supporting foot is provided with a sliding rod passing through the elongated sliding hole, and the sliding rod is threadedly connected with a locking nut located below the inclined slide rail to prevent the sliding rod from falling out of the elongated sliding hole, so that the outer mold side plate can be reliably inclined.

[0007] Preferably, both left and right ends of the support leg are provided with upper flanges, and the angle between the upper flange and the inclined slide rail is an acute angle, so that the upper end is not easily stuck during sliding.

[0008] Preferably, it also includes a booster plate located above the two outer mold side plates and a booster plate lifting cylinder for driving the booster plate to rise and fall. The outer mold side plates include an outer plate and an inner plate. The inner plate is connected to the outer plate through a spring, and the outer plate is connected to the telescopic rod. The inner plate constitutes the groove wall of the outer mold groove. The inner plate is fixed with a guide rod penetrating the outer plate. When in the mold closing state, the lower end of the inner plate is sealed and movably placed on the outer mold bottom plate. After the concrete is poured into the box beam cavity, the booster plate is driven down by the booster plate lifting cylinder so that the spring stores energy to the set value, and the booster plate is maintained in the current state. At this time, there is an avoidance gap between the booster plate and the inner plate. During the solidification of the concrete, the inner plate can move synchronously regardless of whether the concrete volume increases or decreases. The flatness and density of the box beam surface can be guaranteed.

[0009] Preferably, the outer mold bottom plate includes a left half and a right half of the bottom plate, and the left half and the right half of the bottom plate are hinged together by a hinge whose axis extends in the front-to-back direction, and the hinge is supported on the mold base by a middle vertical telescopic cylinder, and the left half of the bottom plate is supported on the mold base by a left vertical telescopic cylinder, and the right half of the bottom plate is supported on the mold base by a right vertical telescopic cylinder. During the process of assembling the outer mold, the outer mold bottom plate is maintained in the required pop-up state and is sealed against the inner plate of the outer mold by adjusting the left telescopic cylinder, the middle vertical telescopic cylinder and the right vertical telescopic cylinder. During the process of removing the outer mold, the left vertical telescopic cylinder and the right vertical telescopic cylinder contract to realize demoulding of the outer mold bottom plate, and at the same time, the outer mold bottom plate is disengaged from the inner plate of the outer mold, providing an avoidance space for the demoulding process in which the outer mold side plates are tilted downward and separated. It can not only ensure the reliability and convenience of mold closing, but also save effort in demoulding.

[0010] Preferably, both left and right ends of the outer mold bottom plate are removably connected with blocking pins for preventing the inner side plate from falling off.

[0011] Preferably, the inner mold includes an inner mold upper plate, an inner mold left plate, an inner mold lower plate and an inner mold right plate connected end to end in sequence, the upper surface of the inner mold lower plate is a "V" shape, the lower surface of the inner mold upper plate is an inverted "V" shape, the left end of the inner mold upper plate rests on the upper end of the inner mold left plate, and the right end rests on the upper end of the inner mold right plate, the lower end of the inner mold left plate is supported on the left end of the inner mold lower plate, the lower end of the inner mold right plate is supported on the right end of the inner mold lower plate, and the inner mold left plate and the inner mold right plate are connected together by a number of connecting cylinders that can be telescopic to the left and right. The process of removing the inner mold is: the inner mold left plate and the inner mold right plate are disengaged from the box beam by contracting the connecting cylinder, at which time the inner mold upper plate and the inner mold lower plate move in the up and down directions and have a moving space, and the inner mold upper and lower plates are disengaged at the upper end of the inner mold lower plate and the lower inner mold upper plate. It is convenient and reliable to disengage the inner mold, so that it is labor-saving to remove the inner mold from the box beam.

[0012] Preferably, the left side of the front and rear ends of the upper inner mold plate is provided with an upper left hooking strip and the right side is provided with an upper right hooking strip, the upper left hooking strip is parallel to the left half of the upper inner mold plate, the upper right groove strip is parallel to the right half of the upper inner mold plate, the front and rear ends of the left inner mold plate are provided with an upper left hook head hooked on the upper left hooking strip, and the front and rear ends of the right inner mold plate are provided with an upper right hook head hooked on the upper right hooking strip; the left side of the front and rear ends of the lower inner mold plate are provided with a lower left hooking strip and the right side is provided with a lower right hooking strip, the lower left hooking strip is parallel to the left half of the lower inner mold plate, the lower right groove strip is parallel to the right half of the lower inner mold plate, the front and rear ends of the left inner mold plate are provided with a lower left hook head hooked on the lower left hooking strip, and the front and rear ends of the right inner mold plate are provided with a lower right hook head hooked on the lower right hooking strip. The upper inner mold plate and the lower inner mold plate can be disengaged synchronously during the disengagement of the left and right inner mold plates.

[0013] The utility model has the following beneficial effects: the outer mold side plate is opened obliquely downward, which has little impact on the side of the box beam body; and the change of the solidified volume has little impact on the quality of the box beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model in a mold closing state;

[0015] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0016] Figure 3 for Figure 1 A local enlarged schematic diagram of point B;

[0017] Figure 4 for Figure 1 A local enlarged schematic diagram of point C.

[0018] In the figure: outer mold bottom plate 1, outer mold side plate 2, outer mold end plate 3, booster plate 4, booster plate lifting cylinder 5, outer plate 6, inner plate 7, spring 8, guide rod 9, mold base 10, telescopic puller 11, fixed frame 12, telescopic rod 13, inclined slide rail 14, long strip slide hole 15, support foot 16, slide rod 17, anti-slip nut 18, upper flange 19, left half of bottom plate 20, right half of bottom plate 21, hinge 22, middle vertical telescopic cylinder 23, Left vertical telescopic cylinder 24, right vertical telescopic cylinder 25, blocking pin 26, inner mold upper plate 27, inner mold left plate 28, inner mold lower plate 29, inner mold right plate 30, upper surface 31 of inner mold lower plate, lower surface 32 of inner mold upper plate, connecting cylinder 33, upper left hook strip 34, upper right hook strip 35, upper left hook head 36, upper right hook head 37, lower left hook strip 38, lower right hook strip 39, lower left hook head 40, lower right hook head 41, prefabricated box girder 42. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4, a fixed formwork hydraulic demolding system, the box beam mold includes an outer mold and an inner mold located inside the outer mold, and a box beam cavity is formed between the outer mold and the inner mold. The outer mold includes an outer mold base plate 1, two outer mold side plates 2 and two outer mold end plates 3, the two outer mold side plates are detachably connected to the left and right sides of the outer mold base plate to form an outer mold groove, and the two outer mold ends are closed at both ends of the outer mold groove. It also includes a booster plate 4 located above between the two outer mold side plates and a booster plate lifting cylinder 5 for driving the booster plate to rise and fall. The outer mold side plate includes an outer plate 6 and an inner plate 7, the inner plate is connected to the outer plate by a spring 8, the outer plate is connected to a telescopic rod 13, the inner plate constitutes the groove wall of the outer mold groove, the inner plate is fixedly connected to a guide rod 9 penetrating the outer plate, and the lower end of the inner plate is sealed and movably placed on the outer mold base plate when in the mold closing state. The inner mold is a tubular structure, and the two ends of the inner mold are inserted into the two outer mold end plates, and the outer mold bottom plate is supported on the mold base 10. The mold removal device includes two telescopic pullers 11 distributed on both sides of the mold base for pulling the two outer mold side plates one by one. The telescopic puller includes a fixed frame 12 and a telescopic rod 13 with one end hinged on the fixed frame, and the other end of the telescopic rod is hinged with the outer mold side plate (specifically the outer plate). The mold base is provided with a plurality of inclined slide rails 14 extending in the left-right direction and distributed in the front-back direction. The inclined slide rail is higher at one end facing the outer mold and lower at the other end. The lower end of the outer mold side plate is slidably connected to the inclined slide rail. The inclined slide rail is provided with a long strip slide hole 15 extending in the extending direction of the inclined slide rail, the long strip slide hole is a through hole, the outer mold side plate is provided with a support foot 16 supported on the inclined slide rail, the support foot is provided with a slide rod 17 (specifically a bolt) passing through the long strip slide hole, and the slide rod is threadedly connected with a locking nut 18 located below the inclined slide rail to prevent the slide rod from coming out of the long strip slide hole. Upper flanges 19 are provided at both left and right ends of the support foot, and the angle between the upper flange and the inclined slide rail is an acute angle.

[0021] The outer mold bottom plate includes a left half 20 and a right half 21, which are hinged together by a hinge 22 whose axis extends in the front-to-back direction, and the hinge is supported on the mold base by a middle vertical telescopic cylinder 23. The left half of the bottom plate is supported on the mold base by a left vertical telescopic cylinder 24, and the right half of the bottom plate is supported on the mold base by a right vertical telescopic cylinder 25. The left and right ends of the outer mold bottom plate are removably connected with blocking pins 26 to prevent the inner side plate from falling off.

[0022] The inner mold includes an inner mold upper plate 27, an inner mold left plate 28, an inner mold lower plate 29 and an inner mold right plate 30 which are connected end to end in sequence. The upper surface 31 of the inner mold lower plate is in a "V" shape, and the lower surface 32 of the inner mold upper plate is in an inverted "V" shape. The left end of the inner mold upper plate rests on the upper end of the inner mold left plate, and the right end rests on the upper end of the inner mold right plate. The lower end of the inner mold left plate is supported on the left end of the inner mold lower plate, and the lower end of the inner mold right plate is supported on the right end of the inner mold lower plate. The inner mold left plate and the inner mold right plate are connected together by a number of connecting cylinders 33 that can be telescoped left and right. An upper left hook strip 34 is provided on the left side of the front and rear ends of the upper plate of the inner mold, and an upper right hook strip 35 is provided on the right side. The upper left hook strip is parallel to the left half of the upper plate of the inner mold, and the upper right groove strip is parallel to the right half of the upper plate of the inner mold. An upper left hook head 36 hooked on the upper left hook strip is provided on the front and rear ends of the left plate of the inner mold, and an upper right hook head 37 hooked on the upper right hook strip is provided on the front and rear ends of the right plate of the inner mold; a lower left hook strip 38 is provided on the left side of the front and rear ends of the lower plate of the inner mold, and a lower right hook strip 39 is provided on the right side. The lower left hook strip is parallel to the left half of the lower plate of the inner mold, and the lower right groove strip is parallel to the right half of the lower plate of the inner mold. A lower left hook head 40 hooked on the lower left hook strip is provided on the front and rear ends of the left plate of the inner mold, and a lower right hook head 41 hooked on the lower right hook strip is provided on the front and rear ends of the right plate of the inner mold.

[0023] The process of dismantling the box beam mold is as follows: concrete is poured into the box beam cavity, the boost plate is driven down by the boost plate lifting cylinder to make the spring store energy to the set value, and the boost plate is maintained in the current state. When the concrete poured in the adjacent cavity is solidified to form the prefabricated box beam 42, the telescopic rod is contracted to make the outer mold side plate move downward along the extension direction of the inclined track to achieve the disengagement of the outer mold side plate, and then the inner mold is removed, and finally the outer mold end plate is removed. The process of dismantling the inner mold is as follows: the inner mold left plate and the inner mold right plate are disengaged from the box beam by contracting the connecting cylinder, and the inner mold left plate and the inner mold right plate are closed and demoulded to synchronously close the inner mold upper plate and the inner mold lower plate and disengage from the inner surface of the box beam. During the process of assembling the outer mold, the outer mold bottom plate is maintained in the required pop-up state and sealed against the outer mold inner plate by adjusting the left telescopic cylinder, the middle vertical telescopic cylinder and the right vertical telescopic cylinder. During the process of disassembling the outer mold, the left vertical telescopic cylinder and the right vertical telescopic cylinder are contracted to realize the demoulding of the outer mold bottom plate, and at the same time, the outer mold bottom plate is disengaged from the outer mold inner plate, providing avoidance space for the demoulding process in which the outer mold side plates are tilted downward and separated.

Claims

1. A fixed formwork hydraulic demoulding system, wherein the box beam mold comprises an outer mold and an inner mold located inside the outer mold, and a box beam cavity is formed between the outer mold and the inner mold, wherein: The outer mold comprises an outer mold bottom plate, two outer mold side plates and two outer mold end plates, the two outer mold side plates are detachably connected to the left and right sides of the outer mold bottom plate to form an outer mold groove, the two outer mold ends are closed at the two ends of the outer mold groove, the inner mold is a tubular structure, the two ends of the inner mold are passed through the two outer mold end plates, the outer mold bottom plate is supported on the mold base, and the mold removal device comprises two telescopic pulling frames distributed on both sides of the mold base for pulling the two outer mold side plates one by one, the telescopic pulling frames comprise a fixed frame and a telescopic rod with one end hinged on the fixed frame, the other end of the telescopic rod is hinged to the outer mold side plate, and the mold base is provided with a plurality of inclined slide rails extending along the left and right directions and distributed in the front and back directions, the inclined slide rail is higher at one end facing the outer mold and lower at the other end, and the lower end of the outer mold side plate is slidably connected to the inclined slide rail.

2. A fixed formwork hydraulic demolding system according to claim 1, characterized in that: The inclined slide rail is provided with an elongated sliding hole extending along the extension direction of the inclined slide rail, the elongated sliding hole is a through hole, the outer mold side plate is provided with a supporting foot supported on the inclined slide rail, the supporting foot is provided with a sliding rod passing through the elongated sliding hole, and the sliding rod is threadedly connected with a locking nut located below the inclined slide rail to prevent the sliding rod from falling out of the elongated sliding hole.

3. A fixed formwork hydraulic demolding system according to claim 2, characterized in that: The left and right ends of the supporting foot are both provided with upper flanges, and the angle between the upper flange and the inclined slide rail is an acute angle.

4. A fixed formwork hydraulic demolding system according to claim 1, 2 or 3, characterized in that: It also includes a boost plate located above between the two outer mold side plates and a boost plate lifting cylinder for driving the boost plate to rise and fall, the outer mold side plates include an outer plate and an inner plate, the inner plate is connected to the outer plate through a spring, the outer plate is connected to the telescopic rod, the inner plate constitutes the groove wall of the outer mold groove, the inner plate is fixedly connected to a guide rod passing through the outer plate, and the lower end of the inner plate is sealed and movably placed on the outer mold bottom plate when in the mold closing state.

5. A fixed formwork hydraulic demolding system according to claim 4, characterized in that: The outer mold base plate includes a left half and a right half of the base plate, and the left half and the right half of the base plate are hinged together by a hinge whose axis extends along the front-to-back direction. The hinge is supported on the mold base through a middle vertical telescopic cylinder, and the left half of the base plate is supported on the mold base through a left vertical telescopic cylinder, and the right half of the base plate is supported on the mold base through a right vertical telescopic cylinder.

6. A fixed formwork hydraulic demolding system according to claim 4, characterized in that: The left and right ends of the outer mold bottom plate are both detachably connected with blocking pins for preventing the inner side plate from falling off.

7. A fixed formwork hydraulic demolding system according to claim 1, 2 or 3, characterized in that: The inner mold includes an inner mold upper plate, an inner mold left plate, an inner mold lower plate and an inner mold right plate which are connected together end to end in sequence, the upper surface of the inner mold lower plate is a "V" shape, the lower surface of the inner mold upper plate is an inverted "V" shape, the left end of the inner mold upper plate rests on the upper end of the inner mold left plate, and the right end rests on the upper end of the inner mold right plate, the lower end of the inner mold left plate is supported on the left end of the inner mold lower plate, and the lower end of the inner mold right plate is supported on the right end of the inner mold lower plate, and the inner mold left plate and the inner mold right plate are connected together by a number of connecting cylinders that can be telescopic to the left and right.

8. A fixed formwork hydraulic demolding system according to claim 7, characterized in that: An upper left hook strip is provided on the left side of the front and rear ends of the upper plate of the inner mold, and an upper right hook strip is provided on the right side. The upper left hook strip is parallel to the left half of the upper plate of the inner mold, and the upper right groove strip is parallel to the right half of the upper plate of the inner mold. An upper left hook head is provided on the front and rear ends of the left plate of the inner mold, and an upper right hook head is provided on the front and rear ends of the right plate of the inner mold; a lower left hook strip is provided on the left side of the front and rear ends of the lower plate of the inner mold, and a lower right hook strip is provided on the right side. The lower left hook strip is parallel to the left half of the lower plate of the inner mold, and the lower right groove strip is parallel to the right half of the lower plate of the inner mold. A lower left hook head is provided on the front and rear ends of the left plate of the inner mold, and a lower right hook head is provided on the front and rear ends of the right plate of the inner mold.

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