Box girder internal mold integral drawing mold removal device

Abstract

The utility model discloses a box girder internal mold integral drawing mold removal device, which relates to the technical field of bridge engineering construction equipment, and a supporting mechanism comprises a mold plate supporting device used for supporting a box girder internal mold and a bracket device fixed on the mold plate supporting device and used for supporting the mold plate supporting device, the formwork supporting device is provided with a wheel shaft device used for assisting the box girder inner formwork in moving and a limiting device used for axially limiting the box girder inner formwork. The mold pulling mechanism is installed at one end of the supporting mechanism, used for pulling the box girder inner mold to the mold plate supporting device and comprises a power device used for providing traction force and a traction device used for transmitting the traction force to the box girder inner mold. The limiting device is electrically connected with the power device and used for closing the power device when the box girder inner mold makes contact with the limiting device. The operation platforms are installed on the two sides of the supporting mechanism, so that an operator passes to the formwork supporting device to conduct auxiliary hoisting on the box girder inner formwork which is pulled out. The device is high in form removal efficiency and good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering construction equipment, in particular to a device for integrally pulling and dismantling a box beam inner mold. Background Art

[0002] Box beam is a type of beam in bridge engineering. It is named because it is hollow inside and has flanges on both sides of the upper part, similar to a box. Existing box beams are mostly used in large continuous bridges. The main construction method is to use a prefabricated box beam in an independent site and a bridge erection machine to erect it after the lower part of the bridge is completed. This method can speed up the progress of the project, save construction time, and reduce the impact on the original traffic.

[0003] In the existing box girder prefabrication technology, the steel folding inner mold is mainly assembled and hoisted as a whole into the side mold and poured with concrete. After the concrete is set, the inner mold is removed to obtain the box girder. In the existing technology, when removing the inner mold of the box girder, workers need to drill into the inner mold of the box girder and dismantle and drag out the inner mold piece by piece, which is time-consuming and labor-intensive, with high difficulty and low efficiency, seriously affecting the production speed of the prefabricated box girder; and the internal space of the box girder is small, and the removal of the inner mold is a limited space operation, which has high temperature, high humidity, low air circulation, and a harsh working environment, posing a great safety hazard. Utility Model Content

[0004] The utility model provides a box girder inner mold integrally pulling and demoulding device, which solves the technical problem of difficult demoulding of the box girder inner mold in the prior art.

[0005] According to one aspect of the utility model, a device for pulling out and demolding an inner mold of a box girder as a whole is provided, comprising: a supporting mechanism, comprising a template supporting device for supporting the inner mold of the box girder and a bracket device for supporting the template supporting device, the template supporting device being fixedly mounted on the bracket device, the template supporting device being provided with an axle device for assisting the movement of the inner mold of the box girder and a limiting device for axially limiting the inner mold of the box girder; a demolding mechanism, fixedly mounted on one end of the supporting mechanism, for pulling the inner mold of the box girder onto the template supporting device, comprising a power device for providing traction force and a traction device for transmitting traction force to the inner mold of the box girder, the limiting device being electrically connected to the power device for controlling the power device to be turned off when the inner mold of the box girder contacts the limiting device; an operating platform, mounted on both sides of the supporting mechanism, for enabling an operator to pass to the template supporting device to assist in lifting the pulled-out inner mold of the box girder.

[0006] Furthermore, the power device includes a winch and a winch bracket for fixing the winch, the winch bracket is fixedly connected to the formwork support device, and the winch is electrically connected to the limiting device; the traction device includes a steel wire rope and a fixing part for detachably fixing to the inner mold of the box beam, one end of the steel wire rope is wound around the driving end of the winch, and the other end of the steel wire rope is fixedly connected to the fixing part.

[0007] Furthermore, the formwork support device includes a formwork support platform for providing bottom support for the box girder inner mold pulled out by the demolding mechanism and an anti-roll baffle for preventing the box girder inner mold placed on the formwork support platform from tilting. The anti-roll baffle is obliquely arranged on both sides of the formwork support platform and is fixedly connected to the formwork support platform.

[0008] Furthermore, multiple wheel-axle devices are arranged along the length direction of the template support platform, and the wheel-axle device includes a bearing tube arranged along the vertical pulling direction and a pulley slidingly inserted into the bearing tube, and the pulley is arranged to protrude from the surface of the template support platform.

[0009] Furthermore, the support device includes several vertically arranged columns, a horizontal support frame and an adjustable support base. One end of the column is fixedly connected to the formwork support platform, and the other end is fixedly connected to the horizontal support frame. The adjustable support base is installed at the bottom of the horizontal support frame for leveling and heightening the formwork support platform.

[0010] Furthermore, the adjustable support base includes a plurality of support legs parallel to the columns, the plurality of support legs are distributed circumferentially along the bottom of the horizontal support frame, the bottom of the support legs is provided with a base plate for contacting the bottom surface, the top of the support legs is movably inserted in the horizontal support frame, and the support legs are threadedly connected with adjustment nuts for supporting the horizontal support frame.

[0011] Furthermore, the limiting device includes a limiting plate fixedly connected to one end of the formwork supporting device close to the power device and a trigger limiting member fixedly connected to one end of the limiting plate away from the power device. The limiting plate is arranged along the vertical pulling direction, and a slot is provided on the limiting plate for allowing the wire rope to pass through and limit the fixing member. The trigger limiting member includes a limiter fixedly connected to both ends of the limiting plate along the length direction of the limiting plate and a trigger rod fixedly connected between the two limiters. The limiter is electrically connected to the winch.

[0012] Furthermore, the operating platform includes a pedestrian ramp and a hoisting platform fixedly connected to the pedestrian ramp. The hoisting platform is cantilevered on the side of the formwork support platform and is consistent with the height of the formwork support platform. Guardrails are installed on the outside of the pedestrian ramp and the hoisting platform. One pedestrian ramp is set on each side of the support mechanism, and the two pedestrian ramps are located at different ends of the support mechanism.

[0013] Furthermore, the formwork support device and / or the bracket device is provided with a lifting ring, and a plurality of lifting rings are symmetrically installed along the outer peripheral wall of the formwork support device and / or the bracket device.

[0014] Furthermore, the integral pulling and demoulding device for the inner mold of the box beam also includes a storage cabinet for storing tools, and the storage cabinet is fixedly connected to the bracket device.

[0015] The utility model has the following beneficial effects:

[0016] The box girder inner mold integrally drawn and demolded device of the utility model is provided with a supporting mechanism, a demolding mechanism and an operating platform. The demolding mechanism can enable the traction device to transmit the traction force to the box girder inner mold through the traction force provided by the power device, so that the box girder inner mold is drawn to the supporting mechanism under the action of the traction force, thereby realizing the integrated drawing and demolding of the integral box girder inner mold by applying traction force outside the box girder. Compared with the prior art, the demolding device adopts the device to remove the mold without requiring the operator to enter the internal space of the box girder inner mold to remove the molds one by one, thereby reducing the labor intensity, and the demolding speed is fast, convenient and quick, which can effectively improve the construction environment and greatly improve the safety factor. The supporting mechanism can stably support the box girder inner mold drawn by the demolding mechanism, and the wheel axle device is arranged on the supporting mechanism to reduce the friction between the drawn box girder inner mold and the supporting mechanism, thereby improving the drawing speed of the box girder inner mold. The damage of the box beam inner mold to the supporting mechanism due to friction is reduced. At the same time, the wheel shaft device is used to transmit the box beam inner mold, which can reduce the working intensity of the pulling device, share part of the bearing force for the supporting mechanism, and improve the service life of the device; a limiting device is also provided on the supporting mechanism, and the limiting device is electrically connected to the power device of the demolding mechanism, so that after the pulled out box beam inner mold contacts the limiting device, the limiting device can control the power device to shut down to stop the demolding operation, so that the box beam inner mold can be axially limited in time to avoid damage caused by contact between the box beam inner mold and the demolding mechanism, ensure the integrity of the box beam inner mold, and greatly improve the reliability of the device; the operating platform is provided for the operator to pass to the template support device to hoist the pulled out box beam inner mold in time to remove it from the device, so as to avoid affecting the pulling and demolding operation of the next box beam inner mold, and the demolding efficiency is high. The device has a simple structure, is easy to operate, and is easy to carry, which can effectively reduce production costs.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of view 1 of the box beam inner mold integrally pulling and demoulding device of the preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the box beam inner mold integrally pulling and demoulding device from view 2 of the preferred embodiment of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of a box beam inner mold integrally pulling and demolding device of a preferred embodiment of the utility model.

[0022] Legend:

[0023] 100, support mechanism; 101, formwork support device; 1011, formwork support platform; 1012, anti-tilt baffle; 102, bracket device; 1021, column; 1022, horizontal support frame; 1023, adjustable support base; 10231, support leg; 10232, base plate; 10233, adjusting nut; 103, wheel shaft device; 1031, bearing tube; 1032, pulley; 200, limit device; 20 1. Limit plate; 202. Trigger limiter; 2021. Limiter; 2022. Trigger rod; 300. Ejection mechanism; 301. Power unit; 3011. Winch; 3012. Winch bracket; 302. Traction device; 3021. Wire rope; 3022. Fixing part; 400. Operating platform; 401. Pedestrian ramp; 402. Lifting platform; 403. Guardrail; 500. Lifting ring; 600. Storage cabinet. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0025] like Figure 1As shown, the overall pulling and demoulding device for the inner mold of a box beam of this embodiment comprises a support mechanism 100, a demoulding mechanism 300 and an operating platform 400. The demoulding mechanism 300 is fixedly mounted at one end of the support mechanism 100, and the operating platform 400 is mounted on both sides of the support mechanism 100. Specifically, the support mechanism 100 comprises a formwork support device 101 and a bracket device 102. The bracket device 102 is fixedly mounted below the formwork support device 101 to support the formwork support device 101. The demoulding mechanism 300 comprises a power device 301 and a traction device 302. The power device 301 is fixed at the end of the formwork support device 101. One end of the traction device 302 is fixedly connected to the driving end of the power device 301 so that the power device 301 provides traction thereto. The other end of the traction device 302 is used to be fixed to the inner mold of the box beam so as to transmit the traction provided by the power device 301 to the inner mold of the box beam, so that the inner mold of the box beam is pulled to the formwork under the action of the traction force. On the supporting device 101, the integrated pulling out and overall removal of the box girder inner mold is realized. Preferably, the template supporting device 101 is provided with an axle device 103 to reduce friction and increase the moving speed of the box girder inner mold on the template supporting device 101; the pulled out box girder inner mold is placed on the template supporting device 101 and needs to be hoisted and moved out by a gantry crane or a crane. The operating platforms 400 on both sides of the supporting mechanism 100 provide a walking passage for the operator, making it convenient for the operator to pass to the template supporting device 101 to fix the pulled out section of the inner mold on the gantry crane or the crane so as to move the device out by hoisting, so as to avoid affecting the pulling and support of the next section of the box girder inner mold. Preferably, a limiting device 200 is also installed on the template support device 101. The limiting device 200 is arranged between the box beam inner mold and the power device 301 of the demolding mechanism 300 and is electrically connected to the power device 301. Specifically, the limiting device 200 and the power device 301 are connected in series through a power supply, and the synchronous opening of the limiting device 200 and the power device 301 is controlled by a remote control. When the pulled-out box beam inner mold does not contact the limiting device 200, the power supply is in a connected state, and the limiting device 200 and the power device 301 are connected in series. The force device 301 keeps running. When the pulled-out box beam inner mold contacts the limit device 200, the power supply is cut off, so that the limit device 200 controls the power device 301 to shut down to stop the demolding operation, and the box beam inner mold no longer moves. Therefore, the limit device 200 can timely limit the axial position of the box beam inner mold, so as to avoid the inner mold or the power device 301 being damaged due to improper operation during the removal of the inner mold, thereby ensuring the integrity of the box beam inner mold and greatly improving the reliability of the device. Preferably, the operating platform 400 is centrally symmetrically installed on both sides of the support mechanism 100, so that the operator can pass from both ends of the support mechanism 100 to the template support device 101, thereby improving work efficiency. Optionally, the operating platform 400 can be fixedly connected to the support mechanism 100, or can be detachably fixedly connected to the support mechanism 100.

[0026] When in use, before the box girder inner mold is removed, the box girder inner mold is pulled out and demolded by a gantry crane or a crane to lift the box girder inner mold as a whole and move it to the prefabricated box girder where the inner mold is to be removed, so that it is consistent with the length direction of the prefabricated box girder, and then the end of the support mechanism 100 of the device away from the demolding mechanism 300 is close to the beam-making pedestal to prevent the device from moving during the process of pulling out the box girder inner mold. Preferably, channel steel or square wood is used between the support mechanism 100 and the beam-making pedestal to prevent damage to the device. The demolding mechanism 300 is placed at the end away from the box girder, and one end of the traction device 302 of the demolding mechanism 300 is fixed to the box girder inner mold, and the other end is fixedly connected to the driving end of the power device 301. For the removal of the folding box girder inner mold, the box girder inner mold needs to be removed section by section, and then the removed inner mold is folded. Specifically, after the strength of the prefabricated box girder reaches the demolding strength, the power device 301 is turned on, so that the demolding mechanism 300 can drive the traction device 302 to pull the inner mold of the box girder through the power device 301, so that the inner mold is pulled onto the formwork support device 101 under the action of the traction force. The formwork support device 101 is equipped with an axle device 103, and the axle device 103 can reduce the friction between the inner mold and the formwork support device 101. When the traction device 302 pulls the inner mold, the axle device 103 can contact the bottom surface of the pulled out box girder inner mold to make it slide along the length direction of the formwork support device 101, thereby increasing the moving speed of the inner mold on the formwork support device 101, effectively improving the demolding efficiency, saving time and effort, and at the same time reducing the damage caused by friction between the box girder inner mold and the formwork support device 101, ensuring the integrity of the box girder inner mold and the formwork support device 101, and increasing the service life of the device.A limiting device 200 is also installed on the template support device 101. The limiting device 200 is connected in series with the power device 301 of the demolding mechanism 300 through a power supply. The limiting device 200 and the power device 301 are synchronously opened by a remote control. After the pulled-out box girder inner mold contacts the limiting device 200, the limiting device 200 can control the power device 301 to be closed to stop the demolding operation, and the pulled-out box girder inner mold is axially limited in time to avoid the box girder inner mold contacting with the demolding mechanism 300 due to improper operation during the template removal process, thereby preventing the inner mold or the demolding mechanism 300 from being damaged, thereby ensuring the integrity of the box girder inner mold and improving the reliability of the device. Specifically, the device is placed on the box girder to be demolded. After the traction device 302 is positioned and reliably fixed to the box beam inner mold, the limit device 200 and the demolding mechanism 300 are turned on by the remote control, so that the traction device 302 of the demolding mechanism 300 gradually pulls the box beam inner mold toward the direction of the power device 301 to the formwork support device 101 under the drive of the power device 301, and the box beam inner mold gradually moves along the length direction of the formwork support device 101. When the box beam inner mold moves to the limit device 200 and contacts with the limit device 200, the power supply is cut off, so that the limit device 200 controls the power device 301 to shut down to stop the demolding operation, and the box beam inner mold no longer continues to move, so that the limit device 200 can timely limit the axial position of the box beam inner mold. When a section of the inner mold of the box girder is completely pulled out onto the formwork support device 101, the power device 301 is turned off to stop the traction device 302 from pulling the inner mold. Then, the operator passes through the operating platform 400 to the formwork support device 101, removes the traction device 302 from the pulled out inner mold, and then uses the lifting wire rope 3021 to fix the pulled out inner mold placed on the formwork support device 101. The gantry crane or crane is used to control the lifting wire rope 3021 to lift the removed inner mold and move it to the designated position. At this point, the removal of a section of the inner mold of the box girder is completed. Repeat the above steps until all the inner molds of the box girder are removed, thereby realizing the integrated pull-out removal of the entire inner mold of the prefabricated box girder. The device arranges a demoulding mechanism 300 on the outside of the box girder. The demoulding mechanism 300 uses a power device 301 to drive a traction device 302 to pull the box girder inner mold outward as a whole, thereby realizing the integrated pull-out removal of the box girder inner mold. The demoulding speed is fast and the efficiency is high. There is no need for personnel to enter the box girder inner mold to dismantle them one by one. The labor intensity is low, the safety is high, and it is economical and applicable.

[0027] like Figure 2As shown, the power device 301 includes a winch 3011 and a winch bracket 3012, the winch 3011 is fixed above the winch bracket 3012, the winch 3011 includes a rotating drum and a winch base for mounting the rotating drum, and the rotating drum is arranged perpendicular to the pulling direction of the box beam inner mold. Optionally, the winch 3011 is controlled by remote control. Optionally, the power device 301 also includes a distribution box, the distribution box is electrically connected to the winch 3011 for supplying power to the winch 3011, and the distribution box is fixed on the bracket device 102 below the winch 3011. The limit device 200 is connected to the distribution box in series with the winch 3011, the winch bracket 3012 includes a vertical steel plate and a horizontal rectangular steel pipe, and a triangular steel rib is used to reinforce the vertical steel pipe and the horizontal rectangular steel pipe. The winch bracket 3012 is fixedly connected to the template support device 101 through the vertical steel plate and the horizontal rectangular steel pipe. Optionally, the winch 3011 and the winch bracket 3012, and the winch bracket 3012 and the formwork support device 101 are fixed by bolt connection or welding. The traction device 302 includes a steel wire rope 3021 and a fixing member 3022. One end of the steel wire rope 3021 is fixed to the winch 3011 and wound along the rotating drum of the winch 3011, and the other end of the steel wire rope 3021 is fixedly connected to the fixing member 3022. The fixing member 3022 includes a hook for fixing the box beam inner mold and an anti-drop spring sheet for preventing the box beam inner mold from falling off during the pulling process. Specifically, when the box girder inner mold is removed, the fixing piece 3022 is fixedly connected to the box girder inner mold, and then the winch 3011 is turned on. The rotating drum of the winch 3011 rotates to move the wire rope 3021 wound on the rotating drum toward the direction of the winch 3011 to tighten the wire rope 3021. The wire rope 3021 between the winch 3011 and the box girder inner mold is in a straightened state, so that the winch 3011 transmits the traction force to the box girder inner mold. Under the action of the traction force, the box girder inner mold is pulled by the wire rope 3021 to the formwork support device 101 outside the box girder; after the box girder inner mold is removed, the winch 3011 is turned off, the rotating drum of the winch 3011 stops rotating, and the wire rope 3021 between the winch 3011 and the box girder inner mold is in a loosened state, and then the free end of the wire rope 3021 and the box girder inner mold are disassembled. Optionally, the end of the steel wire rope 3021 away from the winch 3011 can also be directly fixed to the inner mold of the box beam through a binding connection.

[0028] like Figure 2As shown, the template support device 101 includes a template support platform 1011 and an anti-tilt baffle 1012. The template support platform 1011 is fixed above the support device 102 and arranged along the pulling direction of the box beam inner mold, and is used to support the bottom of the box beam inner mold pulled out by the demolding mechanism 300. The length of the template support platform 1011 is not less than the length of a section of the inner mold in the box beam, so that at least one section of the box beam inner mold pulled out can be completely placed on the template support platform 1011 to ensure the stability of the bottom placement of the box beam inner mold. The anti-tilt baffle 1012 includes an inner baffle, an outer support frame and a middle triangular rib. The outer support frame is fixedly installed on the side of the template support platform 1011. The inner baffle is arranged along the pulling direction of the box beam inner mold and is tilted and fixed on the outer support frame in the direction away from the template support platform 1011. The inner baffle and the outer support frame are reinforced by triangular ribs. Two anti-tilt baffles 1012 are symmetrically arranged on the side of the template support platform 1011 along the length direction of the template support platform 1011. The anti-tilt baffles 1012 use the inner baffle to protect the box beam inner mold on the template support platform 1011 from the side to prevent it from tipping over. A three-sided enclosed space is formed between the two anti-tilt baffles 1012 and the template support platform 1011, which realizes reliable protection of the pulled out box beam inner mold and greatly improves the safety of demoulding. Preferably, the height of the winch base is at the same level as the height of the template support platform 1011, so that the wire rope 3021 wound on the winch rotating drum is arranged above the template support platform 1011 and corresponds to the height of the box beam inner mold, avoiding the loss of traction caused by the vertical height difference between the wire rope 3021 and the box beam inner mold when the wire rope 3021 is pulled and pulled, thereby improving the traction efficiency of the wire rope 3021.

[0029] like Figure 3 As shown, there are multiple axle devices 103 arranged along the length direction of the formwork support platform 1011, and the axle device 103 includes a bearing tube 1031 and a pulley 1032. The bearing tube 1031 is arranged along a pulling direction perpendicular to the box beam inner mold, and the pulley 1032 is slidably penetrated on the bearing tube 1031, and the pulley 1032 protrudes from the surface of the formwork support platform 1011 so as to contact the bottom surface of the box beam inner mold pulled out by the traction device 302 to assist in movement. The pulley 1032 can reduce the friction between the box beam inner mold and the template support platform 1011, making the box beam inner mold move more smoothly on the template support platform 1011, and reducing the working intensity of the wire rope 3021 of the traction device 302; at the same time, the setting of the pulley 1032 can reduce the damage caused by the friction between the box beam inner mold and the template support platform 1011, ensuring the integrity of the appearance of the box beam inner mold and the template support platform 1011, and the setting of the pulley 1032 can also share part of the bearing force for the template support platform 1011, thereby increasing the service life of the device. Optionally, the pulley 1032 can also be a roller that is slidably arranged on the bearing tube 1031.

[0030] like Figure 2 As shown, the support device 102 includes a plurality of vertically arranged columns 1021, a horizontal support frame 1022 and an adjustable support base 1023. One end of the column 1021 is fixedly connected to the formwork support platform 1011, and the other end is fixedly connected to the horizontal support frame 1022. The column 1021 and the horizontal support frame 1022 are fixedly connected as a whole to form a stable frame structure to firmly support the formwork support platform 1011; the adjustable support base 1023 is installed at the bottom of the horizontal support frame 1022 and is movably connected to the horizontal support frame 1022 to level and heighten the formwork support platform 1011, so that the pulled-out box girder inner mold can be stably supported by the formwork support platform 1011, which is safe and reliable.

[0031] like Figure 2 As shown, the adjustable support base 1023 includes a plurality of support legs 10231 parallel to the column 1021, and the plurality of support legs 10231 are distributed along the circumference of the horizontal support frame 1022. Optionally, the plurality of support legs 10231 are arranged at the four corners and the middle of the horizontal support frame 1022 to stabilize the circumferential support of the device. A base plate 10232 is arranged at the bottom of the support leg 10231, and the top is movably inserted into the horizontal support frame 1022, and an adjusting nut 10233 is arranged between the horizontal support frame 1022 and the base plate 10232. The base plate 10232 is fixedly connected to the support leg 10231, and optionally, the base plate 10232 and the support leg 10231 are integrally formed or connected by welding. When in use, the box beam inner mold is integrally pulled out and demolded by the device, and is hoisted to the end of the box beam whose inner mold is to be removed, so that it is arranged along the length direction of the box beam inner mold, and then the support legs 10231 are rotated to adjust the distance between the base plate 10232 and the horizontal support frame 1022, so that the formwork support platform 1011 and the box beam inner mold are at the same height. If the formwork support platform 1011 is tilted and is not in the same horizontal plane as the box beam inner mold, the distance between the base plate 10232 and the horizontal support frame 1022 can be adjusted by rotating multiple support legs 10231 to compensate for the uneven ground so that the formwork support platform 1011 and the box beam inner mold are in the same horizontal plane. After leveling, the adjusting nut 10233 is tightened to the bottom of the horizontal support frame 1022 for tightening, thereby realizing height adjustment and horizontal adjustment of the device, thereby improving the stability of the device and the efficiency of demolding. Optionally, the base plate 10232 is configured to be circular to increase the contact area between the base plate 10232 and the ground, thereby improving the stability of the support and reducing damage to the ground.

[0032] like Figure 2 and Figure 3As shown, the limit device 200 includes a limit plate 201 and a trigger limit member 202. The limit plate 201 is fixedly connected to one end of the template support device 101 close to the power device 301, and the trigger limit member 202 is fixedly connected to one end of the limit plate 201 away from the power device 301. The limit plate 201 is arranged along a direction perpendicular to the pulling direction of the box beam inner mold, and a notch is provided on the limit plate 201. The notch can make the wire rope 3021 pass smoothly and extend to the template support platform 1011, avoiding affecting The wire rope 3021 is used for pulling and pulling the inner mold of the box girder. On the other hand, the notch can limit the wire rope 3021 and the fixing part 3022 at the end of the wire rope. After the ejection mechanism 300 completes the ejection operation and stops running, the notch can limit the wire rope 3021 and the fixing part 3022 in a loose state to prevent the wire rope 3021 and the fixing part 3022 from passing through the limiting plate 201, thereby facilitating the removal of the fixing part 3022 from the inner mold of the box girder; optionally, the notch can be an open groove or a through hole. The trigger limiter 202 includes a limiter 2021 fixedly connected to both ends of the limiter plate 201 along the length direction of the limiter plate 201 and a trigger rod 2022 fixedly connected between the two limiters 2021. The limiter 2021 is electrically connected to the winch 3011. The trigger rod 2022 is arranged to pass through the entire cross-section of the formwork support device 101 along the pulling direction perpendicular to the box beam inner mold, so as to increase the contact surface between the trigger rod 2022 and the box beam inner mold, so that the box beam inner mold and the trigger rod 2022 are in sensitive contact, and the timeliness of the limit is improved. Optionally, the trigger rod 2022 can also be a plate body. Specifically, the limiter 2021 and the hoist 3011 are connected in series on the distribution box, and the power is supplied by the distribution box. The limiter 2021 and the hoist 3011 are controlled by a remote controller to open synchronously. When the pulled-out box beam inner mold does not contact the trigger rod 2022, the power supply of the distribution box is in a connected state, and the limiter 2021 and the hoist 3011 keep running. When the pulled-out box beam inner mold contacts the trigger rod 2022, the power supply is cut off, so that the limiter 2021 controls the hoist 3011 to close to stop the demolding operation, and the box beam inner mold does not continue to move. Therefore, the limit device 200 can timely limit the axial position of the box beam inner mold, avoid the inner mold or the power device 301 from being damaged due to improper operation during the removal of the inner mold, ensure the integrity of the box beam inner mold, and greatly improve the reliability of the device. Optionally, the limiting plate 201 may be fixedly connected to the formwork supporting platform 1011 , or may be fixedly connected to the anti-tilt baffle 1012 , or may be connected to both the formwork supporting platform 1011 and the anti-tilt baffle 1012 .

[0033] like Figure 1 and Figure 2As shown, the operating platform 400 includes a pedestrian ramp 401 and a hoisting platform 402, the hoisting platform 402 is fixedly connected to the pedestrian ramp 401, the pedestrian ramp 401 is inclined to the hoisting platform 402 and is fixedly connected to the hoisting platform 402, the operator can go up and down through the pedestrian ramp 401, the side of the pedestrian ramp 401 and the hoisting platform 402 is fixedly connected or detachably fixedly connected to the side of the formwork support platform 1011. Optionally, the operating platform 400 and the formwork support platform 1011 can be connected by welding or by bolts; optionally, an anti-skid step composed of angle steel is fixed on the pedestrian ramp 401. The hoisting platform 402 is cantilevered on the side of the formwork support platform 1011, and includes a load-bearing frame composed of rectangular steel pipes and a personnel support table composed of several rectangular steel pipes laid flat in the load-bearing frame. The personnel support table is fixedly connected to the load-bearing frame to provide stable support for the operator, which is highly safe. The hoisting platform 402 is at the same height as the formwork support platform 1011, so that the operator can contact the box girder inner mold placed on the formwork support platform 1011, which is convenient for the operator to hang it on the wire rope 3021 for hoisting operation. There are two operating platforms 400 arranged symmetrically along the formwork support platform 1011, so that the operator can pass through the pedestrian ramp 401 from the front and rear ends of both sides of the formwork support platform 1011 to the hoisting platform 402 for operation, thereby improving work efficiency. Guardrails 403 are installed on the outside of the pedestrian ramp 401 and the hoisting platform 402 to ensure the safety of the operator. Optionally, the guardrail 403 is made of round steel pipes.

[0034] like Figure 1 As shown, the formwork support device 101 and / or the support device 102 are provided with a lifting ring 500. When in use, before the box beam inner mold is removed, the box beam inner mold needs to be pulled out and the demoulding device is lifted and moved to the prefabricated box beam where the inner mold is to be removed by using a gantry crane or a crane. The setting of the lifting ring 500 can be used to be connected with the steel wire rope 3021 of the gantry crane or the crane, so that the device can be hoisted as a whole. A plurality of lifting rings 500 are symmetrically arranged along the outer peripheral wall of the formwork support platform 1011 or the anti-tilt baffle 1012 to ensure the stability of the hoisting. Optionally, the lifting ring 500 can also be installed on the column 1021 of the support device 102.

[0035] like Figure 2 As shown, the box beam inner mold integrally pulling and disassembling device also includes a storage cabinet 600 for storing related operating tools. The storage cabinet 600 is arranged between the template support platform 1011 and the horizontal support frame 1022. The lower part of the storage cabinet 600 is fixedly connected to the upper part of the horizontal support frame 1022 by bolts, and the surrounding parts are fixed to the column 1021 by bolts. The storage cabinet 600 is provided with a cabinet door that can be opened and closed for storage, so as to avoid the internal tools from falling and causing safety hazards when the overall device is moved.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for integrally pulling and removing the inner mold of a box beam, characterized in that: include: The supporting mechanism (100) comprises a template supporting device (101) for supporting the inner mold of the box beam and a bracket device (102) for supporting the template supporting device (101), the template supporting device (101) is fixedly mounted on the bracket device (102), and the template supporting device (101) is provided with an axle device (103) for assisting the movement of the inner mold of the box beam and a limiting device (200) for axially limiting the inner mold of the box beam; A demoulding mechanism (300) is fixedly mounted on one end of the support mechanism (100) and is used to draw the box beam inner mold onto the template support device (101), comprising a power device (301) for providing traction force and a traction device (302) for transmitting the traction force to the box beam inner mold, and the limiting device (200) is electrically connected to the power device (301) for controlling the power device (301) to be turned off when the box beam inner mold contacts the limiting device (200); An operating platform (400) is installed on both sides of the supporting mechanism (100) and is used to allow an operator to pass to the formwork supporting device (101) to assist in lifting the pulled-out box beam inner formwork.

2. The box beam inner mold integrally pulling and demoulding device according to claim 1 is characterized in that: The power device (301) comprises a hoist (3011) and a hoist bracket (3012) for fixing the hoist (3011), the hoist bracket (3012) is fixedly connected to the formwork supporting device (101), and the hoist (3011) is electrically connected to the limiting device (200); The traction device (302) comprises a steel wire rope (3021) and a fixing member (3022) for being detachably fixedly connected to the inner mold of the box beam, one end of the steel wire rope (3021) is wound around the driving end of the winch (3011), and the other end of the steel wire rope (3021) is fixedly connected to the fixing member (3022).

3. The box beam inner mold integrally pulling and demoulding device according to claim 1 is characterized in that: The formwork support device (101) comprises a formwork support platform (1011) for supporting the bottom of the box beam inner formwork pulled out by the demoulding mechanism (300) and an anti-tilt baffle (1012) for preventing the box beam inner formwork placed on the formwork support platform (1011) from tilting; the anti-tilt baffle (1012) is obliquely arranged on both sides of the formwork support platform (1011) and fixedly connected to the formwork support platform (1011).

4. The box beam inner mold integrally pulling and demoulding device according to claim 3 is characterized in that: The wheel-axle device (103) is provided in plurality along the length direction of the template support platform (1011), and the wheel-axle device (103) comprises a bearing tube (1031) provided along a vertical pulling direction and a pulley (1032) slidingly passed through the bearing tube (1031), and the pulley (1032) is provided protruding from the surface of the template support platform (1011).

5. The box beam inner mold integrally pulling and demoulding device according to claim 3 is characterized in that: The support device (102) comprises a plurality of vertically arranged columns (1021), a horizontal support frame (1022) and an adjustable support base (1023); one end of the column (1021) is fixedly connected to the formwork support platform (1011), and the other end is fixedly connected to the horizontal support frame (1022); the adjustable support base (1023) is installed at the bottom of the horizontal support frame (1022) for leveling and height adjusting the formwork support platform (1011).

6. The box beam inner mold integrally pulling and demoulding device according to claim 5 is characterized in that: The adjustable support base (1023) includes a plurality of support legs (10231) parallel to the column (1021), and the plurality of support legs (10231) are distributed along the circumference of the bottom of the horizontal support frame (1022). The bottom of the support leg (10231) is provided with a base plate (10232) for contacting the bottom surface, the top of the support leg (10231) is movably inserted into the horizontal support frame (1022), and the support leg (10231) is threadedly connected with an adjusting nut (10233) for supporting the horizontal support frame (1022).

7. The box beam inner mold integrally pulling and demoulding device according to claim 2 is characterized in that: The limiting device (200) comprises a limiting plate (201) fixedly connected to one end of the template support device (101) in a direction close to the power device (301), and a trigger limiting member (202) fixedly connected to one end of the limiting plate (201) in a direction away from the power device (301). The limit plate (201) is arranged along the vertical pulling direction, and a slot is provided on the limit plate (201) for allowing the steel wire rope (3021) to pass through and limit the fixing member (3022). The trigger limit member (202) comprises a limiter (2021) fixedly connected to both ends of the limit plate (201) along the length direction of the limit plate (201) and a trigger rod (2022) fixedly connected between the two limiters (2021), and the limiter (2021) is electrically connected to the winch (3011).

8. The box beam inner mold integrally pulling and demoulding device according to claim 3 is characterized in that: The operating platform (400) comprises a pedestrian ramp (401) and a hoisting platform (402) fixedly connected to the pedestrian ramp (401); the hoisting platform (402) is cantilevered on the side of the formwork support platform (1011) and has the same height as the formwork support platform (1011); The pedestrian ramp (401) and the outer side of the hoisting platform (402) are equipped with guardrails (403); One pedestrian ramp (401) is provided on each side of the support mechanism (100), and the two pedestrian ramps (401) are located at different ends of the support mechanism (100).

9. The box beam inner mold integrally pulling and demoulding device according to claim 1 is characterized in that: The formwork support device (101) and / or the bracket device (102) are provided with a lifting ring (500), and a plurality of the lifting rings (500) are symmetrically installed along the outer peripheral wall of the formwork support device (101) and / or the bracket device (102).

10. The box beam inner mold integrally pulling and demoulding device according to claim 1 is characterized in that: The box beam inner mold integrally pulling and demoulding device also includes a storage cabinet (600) for storing tools, and the storage cabinet (600) is fixedly connected to the support device (102).

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