End mold mounting and dismounting tool and using method thereof

Abstract

The invention provides an end mold mounting and dismounting tool and a using method thereof, and relates to the technical field of concrete box girders.The end mold mounting and dismounting tool comprises a length-adjustable frame body, the frame body is connected with a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism are used for fixing an end mold, and the bottom of the frame body is detachably connected with a first driving mechanism; the two sides of the frame body are detachably connected with second driving mechanisms with the positions capable of being adjusted in the X-Z plane, and the first positioning mechanisms and the second positioning mechanisms are matched so that the frame body can drive the end mold to move when moving. According to the end mold mounting and dismounting tool, in the moving process of the end mold, the end mold is stably fixed to the frame body through the first positioning mechanism and the second positioning mechanism, the first positioning mechanism and the second positioning mechanism can be matched with the position of the transverse plate of the end mold and the position of the longitudinal plate of the end mold, and therefore the whole end mold is fixed, and shaking generated when the end mold moves is effectively avoided; and the moving and mounting stability of the end mold is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete box girder, in particular to an end mold mounting and dismounting tool and a using method thereof. BACKGROUND

[0002] When constructing a railway, a concrete box girder needs to be made, and a box girder formwork is used to assist in pouring during the making process of the concrete box girder. The box girder formwork mainly consists of four parts, namely, an outer form, an inner form, an end form and a bottom form. The formwork needs to be installed and demolded before and after the box girder is formed.

[0003] When installing the end form, the end form needs to be installed on a lifting ring, and then moved to a preset position by a crane. Then, the end form is fixed on a pedestal by using tools such as bolts, rivets and clamps. In this installation method, the crane is difficult to operate due to its large size, and the moving precision is insufficient, which makes the installation of the end form inconvenient. During the demolding process of the end form, the operator needs to loosen the fixing bolts or pins between the end form and the beam body, and then uses a crowbar to push the end form to separate it from the concrete surface. Usually, one side of the end form is removed first, and then the other side is removed. When the end form is demolded, it is difficult to keep it moving stably, and the error in the demolding operation precision is large, the safety risk is high, and the action force on the surface of the concrete box girder is also exerted when the end form is pried, which affects the forming quality of the surface of the box girder. Therefore, whether it is the installation of the end form or the demolding, the final effect is not ideal. SUMMARY

[0004] The present application aims to solve the problem of poor installation and demolding effect of the end form.

[0005] To solve the above problems, the present application provides an end form mounting and dismounting tool, which comprises a frame body with adjustable length along the X direction, a plurality of steering wheels are arranged on the frame body, the frame body is connected with a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism are respectively used for positioning the positions of an end form transverse plate and an end form longitudinal plate to fix the end form. The bottom of the frame body is detachably connected with a first driving mechanism, and the two sides of the frame body are detachably connected with a second driving mechanism which can adjust the position in the X-Z plane. The first positioning mechanism and the second positioning mechanism cooperate to drive the end form to move when the frame body moves, and the frame body has at least two moving states. In the first moving state, the frame body moves to the pouring position of the box girder under the driving of the steering wheels until the end form moves to the preset assembly position. In the second moving state, the first driving mechanism drives the frame body to move along the negative direction of the Y axis to move away from the bottom mold of the box girder, and the second driving mechanism drives the frame body to move along the negative direction of the Y axis to move away from the outer mold of the box girder, at this time, the frame body drives the end mold to move away from the box girder.

[0006] The end mold mounting and dismounting tool has the following beneficial effects, but is not limited to the following: When the end mold is mounted, the box girder has not been poured yet, a mounting position can be preset first, the first positioning mechanism is fixed to the end mold transverse plate, and the second positioning mechanism is fixed to the end mold longitudinal plate, so that the end mold is relatively fixed with the frame body. The steering wheel drives the frame body to move, so that the frame body presents the first moving state. Under the driving of the steering wheel, the end mold is accurately moved to the preset mounting position, and the operator fixes the end mold on the pedestal by using bolts, rivets, clamps and the like, so that the contact part between the end mold and the bottom mold and the outer mold is well sealed. Compared with the movement control of the crane in the prior art, the movement mode of the steering wheel is significantly reduced in difficulty, and the convenience and installation effect of the end mold installation are improved. The end mold is stably fixed on the frame body by the first positioning mechanism and the second positioning mechanism during movement, and the first positioning mechanism and the second positioning mechanism can match the position of the end mold transverse plate and the position of the end mold longitudinal plate, so as to fix the entire end mold, effectively avoid the shaking of the end mold during movement, and improve the stability of the end mold movement and installation.

[0007] When the end mold is demolded, the steering wheel drives the frame body to move to the end mold, the first positioning mechanism is fixed to the end mold transverse plate, and the second positioning mechanism is fixed to the end mold longitudinal plate, so that the end mold is relatively fixed with the frame body. And the first driving mechanism and the second driving mechanism are respectively fixed to the bottom mold of the box girder and the outer mold of the box girder, and the frame body presents the second moving state under the cooperation of the first driving mechanism and the second driving mechanism. At this time, the first driving mechanism applies a pushing force to the bottom mold, and correspondingly, the second driving mechanism applies a pushing force to the outer mold. Since the positions of the bottom mold and the outer mold are fixed, the frame body moves to the negative direction of the Y axis under the reaction force through the steering wheel, thereby driving the end mold to move away from the box girder, so that the end mold is separated from the concrete surface of the box girder. The first driving mechanism and the second driving mechanism respectively apply a pushing force to the bottom mold and the outer mold, rather than directly applying a force to the concrete box girder. Compared with the prying method of the end mold in the prior art, the surface of the concrete box girder is not contacted, thereby improving the surface forming quality of the box girder and effectively improving the demolding effect of the end mold.

[0008] Further, the first positioning mechanism comprises extension frames fixed on both sides of the frame body, the extension frames are fixedly installed with first oil cylinders, the output ends of the first oil cylinders are fixedly installed with jacking rods, positioning rings are arranged above the jacking rods in a matched mode, the positioning rings are connected with fixing frames, and the fixing frames are welded and fixed with the end mold transverse plate.

[0009] Further, the positioning ring is a circular truncated cone ring body with a narrow upper part and a wide lower part.

[0010] Further, the jacking rod comprises a flat part, the flat part is connected with an inner receiving part, and the curvature of the outer surface of the inner receiving part is matched with the curvature of the inner surface of the positioning ring.

[0011] Further, the flat part is provided with a pin hole.

[0012] Further, the second positioning mechanism comprises an assembly plate which can move in the X-Y plane, and the assembly plate is detachably connected with the longitudinal plate of the end mold.

[0013] Further, the first driving mechanism is a second oil cylinder arranged at the bottom of the frame body, and the output end of the second oil cylinder is detachably connected with the bottom mold of the box girder through a pin shaft.

[0014] Further, the second driving mechanism comprises third oil cylinders arranged at two sides of the frame body, the third oil cylinders can move in the X-Z plane, and the output end of the third oil cylinders is detachably connected with a counterforce seat, and the counterforce seat is fixedly connected with the outer mold of the box girder.

[0015] The application also provides a use method of the end mold mounting and dismounting tool, which comprises the end mold mounting and dismounting tool as described above. The use method comprises: When the end mold is mounted, a preset assembly position is set, the first positioning mechanism is fixed to the transverse plate of the end mold, the second positioning mechanism is fixed to the longitudinal plate of the end mold, the end mold and the frame body are relatively fixed, the rudder wheel drives the frame body to move, and the frame body presents a first moving state. When the end mold is demounted, the rudder wheel drives the frame body to move to the end mold, the first positioning mechanism is fixed to the transverse plate of the end mold, the second positioning mechanism is fixed to the longitudinal plate of the end mold, the end mold and the frame body are relatively fixed, the first driving mechanism and the second driving mechanism are respectively fixed to the bottom mold of the box girder and the outer mold of the box girder, and the first driving mechanism and the second driving mechanism cooperate to make the frame body present a second moving state.

[0016] Further, a rotating device is arranged on the end mold or the frame body, the rotating device comprises a fixed rod, and the fixed rod is rotatably connected with a sleeve.

[0017] Since the technical improvement and beneficial effects of the use method of the end mold mounting and dismounting tool are at least the same as those of the end mold mounting and dismounting tool, the use method of the end mold mounting and dismounting tool will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front structure schematic view of the end mold in the prior art. Figure 2 It is a back structure schematic view of the end mold in the prior art. Figure 3 Front view of the end mold assembling and disassembling tool in a single line use according to an embodiment of the present application; Figure 4 Rear view of the end mold assembling and disassembling tool in a single line use according to an embodiment of the present application; Figure 5 Enlarged view of A in Figure 3 Enlarged view of A in Figure 6 Enlarged view of B in Figure 5 Enlarged view of B in Figure 7 Enlarged view of C in Figure 3 Enlarged view of C in Figure 8 Enlarged view of C in Figure 4 Enlarged view of C in Figure 9 Front view of the end mold assembling and disassembling tool in a double line use according to an embodiment of the present application; Figure 10 Rear view of the end mold assembling and disassembling tool in a double line use according to an embodiment of the present application; Figure 11 Structure schematic diagram of the rotating device; Figure 12 Structure schematic diagram of the end mold assembling and disassembling tool equipped with the rotating device according to an embodiment of the present application.

[0019] Explanation of reference signs: 1, frame body; 11, base; 12, side frame; 13, connecting top frame; 14, connecting bottom frame; 15, support frame; 16, fixed plate; 2, first positioning mechanism; 21, extension frame; 22, first oil cylinder; 23, jacking rod; 231, straight part; 232, inward retraction part; 24, pin hole; 25, fixed frame; 26, positioning ring; 3, second positioning mechanism; 31, mounting strip; 32, table plate; 33, sliding seat; 34, assembly plate; 35, connecting plate; 36, screw rod; 37, sheet metal; 4, first driving mechanism; 5, second driving mechanism; 51, mounting frame; 511, mounting part; 512, connecting part; 513, fixed part; 514, moving plate; 52, third oil cylinder; 53, counterforce seat; 6, rotating device; 61, fixed rod; 62, sleeve; 7, steering wheel. DETAILED DESCRIPTION

[0020] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings which show the embodiments according to the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort will fall within the scope of protection of the present application.

[0021] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include", "comprise", "have", "possess", "contain", "contain" and the like in the specification and claims of the present application and the above description of drawings are open terms. Therefore, a method or device "including", "comprising", "having", "possessing", "containing", "containing" one or more steps or elements has one or more steps or elements, but is not limited to only having the one or more elements. The terms "first", "second" and the like in the specification and claims of the present application or the above description of drawings are used to distinguish different objects, and are not used to describe a specific order or primary and secondary relationship. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0022] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] Moreover, in the drawings, the Y axis represents the longitudinal direction, that is, the front-rear direction, and the positive direction of the Y axis, that is, the direction in which the arrow of the Y axis points, represents the rear, and the negative direction of the Y axis, that is, the direction opposite to the positive direction of the Y axis, represents the front; the X axis represents the lateral direction, that is, the left-right direction, and the positive direction of the X axis, that is, the direction in which the arrow of the X axis points, represents the right, and the negative direction of the X axis, that is, the direction opposite to the positive direction of the X axis, represents the left; and the Z axis represents the vertical direction, that is, the up-down direction, and the positive direction of the Z axis, that is, the direction in which the arrow of the Z axis points, represents the up, and the negative direction of the Z axis, that is, the direction opposite to the positive direction of the Z axis, represents the down.

[0024] It should be noted that the aforementioned X axis, Y axis and Z axis represent meanings only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] It should be emphasized that when the term "comprising / including" is used in the present specification, it is used to explicitly indicate the presence of the features, integers, steps or components described, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components.

[0027] The term "and / or" in the present application is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after it.

[0028] Single-track railway and double-track railway are two common types of railway lines in railway systems, the main difference lies in the number of lines, design complexity and transportation capacity. Single-track railway refers to a railway line with one track for bidirectional train operation, which has and only one track for train passing in two directions. On this kind of line, trains must follow a single track for bidirectional transportation, so usually need to be scheduled at different times or places to ensure smooth operation between trains. Double-track railway refers to setting two tracks in the same direction, usually each track is operated by single-direction train, and two tracks are used for train passing in different directions, and bidirectional trains can be operated at the same time. That is, each track has a fixed train running direction, forming a complete bidirectional running channel.

[0029] Referring to Figures 1-2 , the railway needs to make concrete box girder during construction, and box girder formwork is used to assist pouring during the production process of concrete box girder. Among them, the end form is usually placed on the storage rack before installation, the back of the end form is used to contact the concrete box girder during subsequent pouring, and the end form is provided with a plurality of end form transverse plates and end form longitudinal plates. The end form is also provided with a plurality of reserved holes, so that the rubber pipe passing through the box girder can pass through the reserved hole and extend out of the end form.

[0030] During the production process of railway concrete box girder, the formwork needs to be installed on the pedestal first, and then the concrete box girder is poured, and the formwork is demolded after the box girder is formed. Among the installed formwork, the bottom die is located at the bottom, and one outer die is arranged on each side of the bottom die. The bottom die and the two outer dies form a U-shaped containing space with a narrow bottom and a wide top, and the inner die is arranged above the bottom die and located in the containing space. The concrete is poured in this U-shaped containing space, and one end die is arranged at each end of the U-shaped containing space for closing the U-shaped containing space. This is the prior art, so it is not repeated here.

[0031] Referring to Figures 3-4 , the end form mounting and dismounting tool of the embodiment of the present application comprises a frame body 1 which can adjust the length in X direction, the frame body 1 is provided with a plurality of rudders 7, the frame body 1 is connected with a first positioning mechanism 2 and a second positioning mechanism 3, the first positioning mechanism 2 and the second positioning mechanism 3 are respectively used for positioning the positions of the end form transverse plate and the end form longitudinal plate to fix the end form.

[0032] The first driving mechanism 4 is detachably connected to the bottom of the frame body 1, and the first driving mechanism 4 is detachably connected to the box girder bottom die. The second driving mechanism 5 which can adjust the position in X-Z plane is detachably connected to the two sides of the frame body 1, and the second driving mechanism 5 is detachably connected to the box girder outer die.

[0033] The first positioning mechanism 2 and the second positioning mechanism 3 cooperate to make the frame body 1 move with the end form when moving, and the frame body 1 has at least two moving states.

[0034] In the first moving state, the frame body 1 is driven by the steering wheel 7 to approach the box girder pouring position until the end mold moves to the preset assembly position.

[0035] In the second moving state, the first driving mechanism 4 drives the frame body 1 to move along the negative direction of the Y axis to move away from the box girder bottom mold, and the second driving mechanism 5 drives the frame body 1 to move along the negative direction of the Y axis to move away from the box girder outer mold, at this time, the frame body 1 drives the end mold to move away from the box girder.

[0036] In this embodiment, the box girder is placed in the length direction (i.e. Y direction), and the end mold mounting and dismounting tool can be arranged at the end mold at both ends of the box girder, and the end mold at one end of the box girder is described here.

[0037] When installing the end mold, the box girder has not been poured at this time. A preset assembly position can be set first, which is the end region of the bottom mold and the outer mold. The first positioning mechanism 2 is fixed to the end mold transverse plate, and the second positioning mechanism 3 is fixed to the end mold longitudinal plate, so that the end mold is relatively fixed with the frame body 1. The steering wheel 7 drives the frame body 1 to move, so that the frame body 1 presents the first moving state. At this time, under the drive of the steering wheel 7, the end mold is accurately moved to the preset assembly position, and the operator uses bolts, rivets, clamps and other tools to fix the end mold on the pedestal, so that the contact part between the end mold and the bottom mold and the outer mold is sealed well. The rolling wheel moving mode of the steering wheel 7 is significantly lower in difficulty compared with the moving control of the crane in the prior art, and improves the convenience and installation effect of the end mold installation.

[0038] The end mold is stably fixed on the frame body 1 during movement by the first positioning mechanism 2 and the second positioning mechanism 3, and the two first positioning mechanisms 2 and the two second positioning mechanisms 3 can match the position of the end mold transverse plate and the position of the end mold longitudinal plate, so as to four-point fix the entire end mold, effectively avoiding the shaking of the end mold during movement, and improving the stability of the end mold movement and installation. In the prior art, the lifting ring type fixation of the crane on the end mold is insufficient in stability for the end mold, and the end mold is prone to shaking, even if multiple lifting rings are arranged on the top of the end mold for lifting, the end mold is also prone to swinging during movement due to air resistance.

[0039] It should be noted that when installing the end mold, the first driving mechanism 4 and the second driving mechanism 5 are dismounted on the frame body 1, so as to avoid the structure of the first driving mechanism 4 and the second driving mechanism 5 from affecting the installation of the end mold due to the avoidance. If the on-site construction conditions allow, or the outer mold and the bottom mold assembled on the pedestal match the tool, and the first driving mechanism 4 and the second driving mechanism 5 do not need to be avoided, the first driving mechanism 4 and the second driving mechanism 5 can also not be dismounted, so as to simplify the operation process.

[0040] During demolding, the rudder wheel 7 drives the frame 1 to move to the end mold, fixing the first positioning mechanism 2 to the horizontal plate of the end mold and the second positioning mechanism 3 to the vertical plate of the end mold, thus fixing the end mold and the frame 1 relatively. The first driving mechanism 4 and the second driving mechanism 5 are respectively fixed to the bottom mold and the outer mold of the box girder. Under the combined action of the first driving mechanism 4 and the second driving mechanism 5, the frame 1 is in a second moving state. At this time, the first driving mechanism 4 applies a thrust to the bottom mold, and correspondingly, the second driving mechanism 5 applies a thrust to the outer mold. Since the positions of the bottom mold and the outer mold are fixed, the frame 1 moves in the negative Y-axis direction via the rudder wheel 7 under the reaction force, thereby driving the end mold away from the box girder and separating the end mold from the concrete surface of the box girder.

[0041] When the end formwork detaches from the box girder, it will suddenly vibrate at the contact surface. However, the four-point fixing of the end formwork by the first positioning mechanism 2 and the second positioning mechanism 3 can effectively constrain the end formwork, allowing it to move smoothly while preventing the end formwork from scratching the concrete surface of the box girder due to vibration, thus effectively improving the demolding effect of the end formwork.

[0042] In addition, the first driving mechanism 4 and the second driving mechanism 5 apply thrust to the bottom mold and the outer mold respectively, rather than applying direct force to the concrete box girder. Compared with the existing technology of prying the end mold, they do not come into contact with the surface of the concrete box girder, thereby improving the surface forming quality of the box girder.

[0043] This end-form installation and dismantling fixture can integrate end-form installation and demolding, eliminating the need for cranes and manpower on the construction site, thus improving installation and demolding efficiency while further saving costs.

[0044] In this embodiment, by adjusting the length of the frame 1, the end formwork installation and dismantling fixture can be adapted to the construction of both single-track and double-track railway box girders. Since the width of a single-track railway box girder differs from that of a double-track railway box girder, the specifications of the end formwork used are also different. Adjusting the length of the frame 1 allows the fixture to be adapted to the construction of box girders of different widths, thus expanding its applicability.

[0045] For details, see Figures 3-4 , Figure 8 The frame 1 includes two supports arranged symmetrically along the X-axis. Each support includes a base 11, with inclined side supports 12 welded to the base 11. A fixing plate 16 is welded to the side supports 12, and the fixing plate 16 has multiple mounting holes of different heights. Adjacent bases 11 are assembled together, and adjacent side supports 12 are assembled together via a connecting top frame 13.

[0046] See Figures 3-4 During the construction of the single-track railway box girder, the length of the connecting top frame 13 is relatively short.

[0047] Referring to Figures 9-10 , in the construction process of the double-track railway box girder, the connecting top frame 13 with a relatively long length needs to be replaced, and a connecting bottom frame 14 needs to be arranged between the two bases 11 to compensate for the length difference of the replaced connecting top frame 13. In order to make the structure of the frame body 1 more stable, avoid the decrease of the strength of the frame body 1 caused by the excessive length and the increase of the self-weight, the support frame 15 is arranged between the connecting top frame 13 and the base 11 along the Z-axis direction. The support frame 15 enhances the overall stability and rigidity of the frame body 1, and avoids the deformation, inclination or instability of the frame body 1 when bearing the load. The frame body 1 can effectively share the load under the action of external force, reduce the bending deformation of the connecting top frame 13 and the base 11, improve the overall bending stiffness of the frame body 1, and can bear greater load.

[0048] Referring to Figure 3 , Figure 5 and Figure 7 , optionally, the first positioning mechanism 2 comprises an extension frame 21 fixed on both sides of the frame body 1, the extension frame 21 is fixedly installed with a first oil cylinder 22, the output end of the first oil cylinder 22 is fixedly installed with a jacking rod 23, and a positioning ring 26 is arranged above the jacking rod 23 in a matched mode, the positioning ring 26 is connected with a fixed frame 25, and the fixed frame 25 is welded and fixed with the end mold horizontal plate.

[0049] Among them, the positioning ring 26 is a circular truncated cone ring body with a narrow upper part and a wide lower part. The jacking rod 23 comprises a flat part 231, the flat part 231 connects an inwardly recessed part 232, and the curvature of the outer surface of the inwardly recessed part 232 is matched with the curvature of the inner surface of the positioning ring 26. In the actual manufacturing process, the curvature of the outer surface of the inwardly recessed part 232 is matched with the curvature of the inner surface of the positioning ring 26 as much as possible. Since there will be errors in manufacturing, the error between the curvatures of the two can be within the allowable deviation range set in the specification, and it is not necessary to be completely consistent.

[0050] In this embodiment, referring to Figures 5-6 , when demolding, the fixed frame 25 is welded and fixed to the end mold horizontal plate, the jacking rod 23 is driven by the first oil cylinder 22 to jack along the positive direction of the Z-axis, so that the inwardly recessed part 232 moves upward to the inside of the positioning ring 26, and the inwardly recessed part 232 is completely embedded in the positioning ring 26. Even if there is eccentricity between the inwardly recessed part 232 and the positioning ring 26, causing the two to be different in axis, the outward surface of the inwardly recessed part 232 is arc-shaped, and the inwardly recessed part 232 will be continuously extruded with the inner wall of the positioning ring 26 during the jacking process, so as to adaptively adjust the position, so as to realize the accurate positioning of the end mold during demolding. This way of adaptively adjusting the position by extrusion can not only reduce the moving precision requirement of the tooling, but also improve the positioning accuracy of the end mold during demolding, effectively improving the demolding effect of the end mold.

[0051] Optionally, referring to Figure 7The second positioning mechanism 3 comprises an assembly plate 34 which is movable in the X-Y plane, and the assembly plate 34 is detachably connected with the end mold longitudinal plate.

[0052] Specifically, the second positioning mechanism 3 further comprises a mounting strip 31 which is movable along the X-axis direction on the base 11 and is fixed by bolts. The top of the mounting strip 31 is fixed with a table plate 32, the top of the table plate 32 is welded with a metal plate 37, the metal plate 37 is connected with a screw rod 36, the screw rod 36 is installed with a connecting plate 35, and the connecting plate 35 is fixedly connected with the assembly plate 34. The table plate 32 is welded with a sliding seat 33, and under the limiting of the sliding seat 33, the connecting plate 35 can slide in the sliding seat 33 without rotating and twisting.

[0053] In the embodiment, the position of the mounting strip 31 is adjusted, then the connecting plate 35 and the assembly plate 34 are driven to move in the positive direction of the Y-axis by rotating the screw rod 36, until the end mold longitudinal plate is embedded between the two assembly plates 34, and the end mold is fixed to the frame body 1 by bolts and nuts.

[0054] Referring to Figure 5 Optionally, the flat portion 231 is provided with a pin hole 24.

[0055] In the embodiment, after the end mold is fixed by the first positioning mechanism 2 and the second positioning mechanism 3, subsequent demolding procedures are performed.

[0056] When the end mold is demolded, the first oil cylinder 22 drives the lifting rod 23 to move downward along the negative direction of the Z-axis until the pin hole 24 is flush with the extension frame 21. The operator uses a pin shaft or a plug rod to penetrate into the pin hole 24, at this time, the pin shaft is clamped on the extension frame 21, which facilitates the dispersion of the pressure applied by the end mold to the extension frame 21 and the frame body 1, avoids the long-time effect of the pressure on the first oil cylinder 22, and further improves the service life of the first oil cylinder 22.

[0057] Referring to Figure 4 Optionally, the first driving mechanism 4 is a second oil cylinder arranged at the bottom of the frame body 1, and the output end of the second oil cylinder is detachably connected with the box girder bottom mold through a pin shaft. The box girder bottom mold is generally provided with an ear plate, and when the box girder bottom mold is connected with the first driving mechanism 4, it is only necessary to embed the output end of the second oil cylinder between the two ear plates, and use a pin shaft to penetrate the output end of the second oil cylinder and the ear plate to realize the fixation between them.

[0058] Referring to Figure 8 Optionally, the second driving mechanism 5 comprises third oil cylinders 52 arranged on both sides of the frame body 1, the third oil cylinders 52 are movable in the X-Z plane, and the output ends of the third oil cylinders 52 are detachably connected with counterforce seats 53, and the counterforce seats 53 are fixedly connected with the box girder outer mold.

[0059] Specifically, the second driving mechanism 5 further comprises a mounting frame 51 which can slide on the fixed plate 16 and is fixed by bolts and nuts. The mounting frame 51 comprises a moving plate 514 which is welded with a fixed part 513, the fixed part 513 is detachably connected with a connecting part 512, the connecting part 512 is detachably connected with a mounting part 511, and the third oil cylinder 52 is fixed to the mounting part 511.

[0060] In order to match the position of the end mold longitudinal plate, the position of the third oil cylinder 52 needs to be adjusted. Since the fixed plate 16 is inclinedly arranged, the position change of the third oil cylinder 52 can be realized by adjusting the assembly position of the moving plate 514 and the fixed plate 16, and the fine adjustment of the position of the third oil cylinder 52 can also be realized by increasing or decreasing the number of the connecting parts 512.

[0061] In addition, unlike the connection between the first driving mechanism 4 and the box girder bottom mold, in the connection between the second driving mechanism 5 and the box girder outer mold, the box girder outer mold is far away from the position of the third oil cylinder 52, and it is difficult to adapt to different construction scenes only by the extension and retraction of the third oil cylinder 52. Therefore, the counterforce seat 53 is arranged as a distance compensation structure between the box girder outer mold and the third oil cylinder 52 to realize the connection between them.

[0062] Another embodiment of the present application further provides a use method of the end mold mounting and dismounting tool, which comprises the foregoing end mold mounting and dismounting tool.

[0063] The use method comprises: When the end mold is mounted, a predetermined assembly position is set, the first positioning mechanism 2 is fixed to the end mold transverse plate, the second positioning mechanism 3 is fixed to the end mold longitudinal plate, the end mold is relatively fixed with the frame body 1, the steering wheel 7 drives the frame body 1 to move, and the frame body 1 presents a first moving state.

[0064] When the end mold is dismounted, the steering wheel 7 drives the frame body 1 to move to the end mold, the first positioning mechanism 2 is fixed to the end mold transverse plate, the second positioning mechanism 3 is fixed to the end mold longitudinal plate, the end mold is relatively fixed with the frame body 1, the first driving mechanism 4 and the second driving mechanism 5 are respectively fixed to the box girder bottom mold and the box girder outer mold, and the first driving mechanism 4 and the second driving mechanism 5 cooperate to make the frame body 1 present a second moving state.

[0065] When the end mold is mounted, the first driving mechanism 4 and the second driving mechanism 5 are detached from the frame body 1.

[0066] Whether in the box girder construction of single-line railway or in the box girder construction of double-line railway, the box girder is provided with a tubular rubber rod along the length direction, which is used for subsequent tensioning of prestressed steel bars. When the end mold is dismounted, the rubber rod will rub against the end mold or the tool, and the friction force of the rubber material is large, which will seriously affect the movement of the end mold during the movement after the end mold is dismounted.

[0067] In order to solve the problem, the skilled in the art usually weld a rod on the front face of the end mold, the rod is outside the reserved hole of the end mold, when the end mold is demolded and moved, the rubber rod will be lapped on the rod, the surface contact between the rubber rod and other workpieces is changed into line contact, and the friction is further reduced. However, the inventors find in many constructions that this method can indeed improve the friction of the rubber rod, but the effect is not obvious, and the rubber rod still has a large frictional resistance in the sliding friction state due to its special material, whether it is surface contact or line contact.

[0068] Referring to Figures 11-12 The end mold or frame 1 is provided with a rotating device 6, the rotating device 6 comprises a fixed rod 61, and the fixed rod 61 is rotationally connected with a sleeve 62.

[0069] In this embodiment, the fixed rod 61 can be fixedly installed on the front face of the end mold and located outside the reserved hole of the end mold, when the end mold is demolded, the rubber tube is lapped on the sleeve 62, and the relative position between the rubber tube and the sleeve 62 changes during the process that the frame 1 drives the end mold away from the box girder. The rubber tube will drive the sleeve 62 to rotate due to its large friction, and for the rubber tube, the rotation of the sleeve 62 is equivalent to rolling along the length direction of the rubber tube, and the rolling friction is much smaller than the sliding friction, thereby effectively reducing the influence of the rubber rod on the movement of the end mold due to friction, and reducing the material damage of the rubber rod.

[0070] Referring to Figure 12 In an embodiment, the rotating device 6 can be directly assembled on the frame 1, and the fixed rod 61 is fixedly installed on the frame 1, so that the rotating device 6 is integrated with the tooling to form an integrated equipment, which can not only reduce the influence of the friction of the rubber rod, but also reduce the production and manufacturing difficulty of the end mold. Moreover, different railway box girders have different shapes, and the shapes of the formworks are also different, if the rotating device 6 is installed on each end mold, the economic cost will be increased. Assembling the rotating device 6 on the tooling can improve the application range of the tooling, and focusing on long-term construction can effectively reduce the construction cost.

[0071] Since the technical improvement and beneficial effects of the use method of the end mold mounting and demounting tool are at least the same as the end mold mounting and demounting tool, the use method of the end mold mounting and demounting tool will not be described again.

[0072] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. The skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall within the protection scope of the present application.

Claims

1. An end mold mounting and demounting tool characterized by, The rack body (1) is provided with a plurality of rudders (7), and the rack body (1) is connected with a first positioning mechanism (2) and a second positioning mechanism (3), the first positioning mechanism (2) and the second positioning mechanism (3) are respectively used for positioning the positions of the end mold horizontal plate and the end mold vertical plate to fix the end mold. The bottom of the rack body (1) is detachably connected with a first driving mechanism (4), and the two sides of the rack body (1) are detachably connected with a second driving mechanism (5) which can adjust the position in the X-Z plane. The first positioning mechanism (2) and the second positioning mechanism (3) cooperate to drive the end mold to move when the rack body (1) moves, and the rack body (1) has at least two moving states. In the first moving state, the rack body (1) is driven by the rudders (7) to approach the box girder pouring position until the end mold moves to a preset assembly position. In the second moving state, the first driving mechanism (4) drives the rack body (1) to move along the negative direction of the Y axis to move away from the box girder bottom mold, and the second driving mechanism (5) drives the rack body (1) to move along the negative direction of the Y axis to move away from the box girder outer mold, at this time, the rack body (1) drives the end mold to move away from the box girder.

2. The end mold handling tool of claim 1, wherein, The first positioning mechanism (2) comprises extension frames (21) fixed on the two sides of the rack body (1), the extension frames (21) are fixedly installed with first oil cylinders (22), the output ends of the first oil cylinders (22) are fixedly installed with jacking rods (23), the jacking rods (23) are provided above with positioning rings (26) in a matched mode, the positioning rings (26) are connected with fixed frames (25), and the fixed frames (25) are welded and fixed with the end mold horizontal plate.

3. The end mold handling tool of claim 2, wherein, The positioning ring (26) is a circular truncated cone ring body which is narrow at the top and wide at the bottom.

4. The end mold handling tool of claim 3, wherein, The jacking rod (23) comprises a flat portion (231), the flat portion (231) is connected with an inwardly recessed portion (232), and the curvature of the outer surface of the inwardly recessed portion (232) is matched with the curvature of the inner surface of the positioning ring (26).

5. The end mold handling tool of claim 4, wherein, The flat portion (231) is provided with a pin hole (24).

6. The end mold handling tool of claim 1, wherein, The second positioning mechanism (3) comprises an assembly plate (34) which can move in the X-Y plane, and the assembly plate (34) is detachably connected with the end mold vertical plate.

7. The end mold handling tool of claim 1, wherein, The first driving mechanism (4) is a second oil cylinder arranged at the bottom of the rack body (1), and the output end of the second oil cylinder is detachably connected with the box girder bottom mold through a pin shaft.

8. The end mold handling tool of claim 1, wherein, The second driving mechanism (5) comprises third oil cylinders (52) arranged on the two sides of the rack body (1), the third oil cylinders (52) can move in the X-Z plane, the output ends of the third oil cylinders (52) are detachably connected with counterforce seats (53), and the counterforce seats (53) are fixedly connected with the box girder outer mold.

9. A method of using an end module handling tool, the method comprising: The end mold assembly and disassembly tool comprises the end mold assembly and disassembly tool according to any one of claims 1-8. The use method comprises: When the end mold is installed, a preset assembly position is set, the first positioning mechanism (2) is fixed on the end mold horizontal plate, the second positioning mechanism (3) is fixed on the end mold vertical plate, the end mold and the rack body (1) are relatively fixed, the rudders (7) drive the rack body (1) to move, and the rack body (1) presents the first moving state. When the end mold is demolded, the steering wheel (7) drives the frame body (1) to move to the end mold, the first positioning mechanism (2) is fixed to the end mold transverse plate, the second positioning mechanism (3) is fixed to the end mold longitudinal plate, the end mold is relatively fixed with the frame body (1), and the first driving mechanism (4) and the second driving mechanism (5) are respectively fixed to the box girder bottom mold and the box girder outer mold, the first driving mechanism (4) and the second driving mechanism (5) are matched, so that the frame body (1) presents a second moving state.

10. The method of use of claim 9, wherein, The rotating device (6) is arranged on the end mold or the frame body (1), the rotating device (6) comprises a fixing rod (61), and the fixing rod (61) is rotationally connected with a sleeve pipe (62).

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