A fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway

Abstract

The invention discloses a fully automatic demoulding outer mold for an orthogonal oblique small box girder of a concrete highway, and relates to a box girder manufacturing technology. The invention comprises two corresponding transverse separation mechanisms, a side mold, a bottom mold and an inner mold which slide horizontally on the transverse separation mechanisms, wherein the side mold, the bottom mold and the inner mold together constitute a casting cavity, and a transverse oil cylinder is rotatably installed on the transverse separation mechanism, wherein the movable end of the transverse oil cylinder is rotatably connected to the lower end of the side mold; during demoulding, the transverse oil cylinder is arranged obliquely; the invention provides a fully automatic demoulding outer mold for an orthogonal oblique small box girder of a concrete highway, wherein the transverse separation mechanism is used for driving the side mold and the transverse oil cylinder after demoulding to perform a transverse separation movement as a whole, and the transverse oil cylinder is rotatably connected between the transverse separation mechanism and the side mold, so that the side mold can move in the vertical direction, and thus the docking position of the side mold and the bottom mold in the vertical direction can be adjusted, and the vibration in the vertical direction can also be buffered.

Description

Technical Field

[0001] The invention relates to a box beam manufacturing technology, in particular to a fully automatic demoulding outer mold for an orthogonal oblique small box beam of a concrete highway. Background Art

[0002] Box girder is a common structural form in bridge engineering and is widely used in the construction of roads such as highways and expressways. Box girder is generally hollow inside with flanges on both sides of the upper part. It is a box-like concrete structure. Compared with traditional steel structure bridges and concrete beam bridges, box girder has the advantages of simple structure, convenient construction and strong bearing capacity. Box girder is divided into prefabricated box girder and cast-in-place box girder according to the construction method. Among them, prefabricated box girder needs to be prefabricated in advance through mold. The box girder mold consists of an outer mold and an inner mold, and the outer mold is generally composed of a bottom mold and a side mold. The bottom mold, side mold and inner mold together constitute the casting area.

[0003] For example, the patent with the authorization announcement number CN218255767U and the authorization announcement date January 10, 2023, is named a patent for a hydraulically demolded box girder, comprising a side mold mechanism, an embedded base, a side mold demolding cylinder, a demolding slide rail, a demolding chute, a side mold, a walking platform, a top pull rod, a foundation, a bottom pull rod, a movable pedestal, a bottom mold plate, a partition wall demolding cylinder and a partition wall. A movable pedestal is provided on the top of the foundation, and two side mold mechanisms are symmetrically provided on both sides of the movable pedestal. A bottom mold plate is fixedly connected to the top of the movable pedestal, and the embedded base, the side mold demolding cylinder, the demolding slide rail, the demolding chute and the side mold in the two side mold mechanisms are matched, and the side mold is slid on the demolding slide rail by contracting the side mold demolding cylinder, so that the two demolding cylinders drive the side mold away from the box girder body, thereby facilitating demolding. The setting of the walking platform makes it convenient for personnel to operate and walk at heights. The coordinated setting of the top pull rod and the bottom pull rod makes the support of the two side molds more stable when the beam is cast.

[0004] Another example is a patent application with application publication number CN117325300A and application publication date January 2, 2024, entitled a demoulding mechanism for a beam steel mold, comprising a lifting device, which is distributed on opposite sides of a pedestal, respectively corresponding to the side molds on both sides of the pedestal, and is used to drive the corresponding side molds to move along the height or width direction of the pedestal; a support member, which is threadedly connected to the bottom of the side mold; a plug-in seat, which is distributed in multiple along the length direction of the side mold and is slidably penetrated on the side mold along the width direction of the pedestal; the plug-in seat includes a connected plug-in section and an abutment section, and the pedestal is provided with a connecting hole for the plug-in sections of two opposite plug-in seats to be inserted together along its own width direction; a connecting assembly, which simultaneously connects all the plug-in seats on the same side mold; a push-pull power source, which is provided on the side mold and is detachably connected to the connecting assembly; a rotating assembly, which is provided on the side mold, and is used to drive the plug-in seats on the same side mold to rotate together; and a locking assembly, which is provided between two opposite plug-in seats. This application can improve the demoulding efficiency of box beams.

[0005] When the side form is demolded, an oil cylinder is needed to pull the side form to separate the side form from the prefabricated box beam. In the prior art, the movable end of the oil cylinder is generally directly fixedly connected to the outer wall of the side form, which will cause the side form to be unable to move in the vertical direction, and also unable to adjust the docking position of the side form and the bottom form in the vertical direction. Moreover, the side form needs to be vibrated before demolding, and the vibration will affect the connection strength of the connection between the oil cylinder and the side form. Summary of the invention

[0006] The purpose of the present invention is to provide a fully automatic demoulding outer mold for orthogonal and oblique small box beams of a concrete highway, so as to solve the above-mentioned shortcomings in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A fully automatic demoulding outer mold for an orthogonal oblique small box beam of a concrete highway comprises two corresponding transverse separation mechanisms, a side mold, a bottom mold and an inner mold horizontally sliding on the transverse separation mechanisms, wherein the side mold, the bottom mold and the inner mold are mutually limited to enclose a casting cavity, and a transverse oil cylinder is rotatably mounted on the transverse separation mechanism, and the movable end of the transverse oil cylinder is rotatably connected to the lower end of the side mold;

[0009] During demoulding, the transverse oil cylinder is arranged at an angle.

[0010] The above-mentioned fully automatic demoulding outer mold of an orthogonal and oblique small box beam of a concrete highway, the lateral separation mechanism includes a lateral movement unit, a slide is installed on the upper end of the lateral movement unit, a support frame is slidably installed on the slide, and the end of the support frame close to the side mold is fixedly connected to the side mold.

[0011] The above-mentioned fully automatic demoulding outer mold of an orthogonal oblique small box beam of a concrete highway, a lifting cylinder is fixedly connected to the sliding seat, the movable end of the lifting cylinder is slidably connected to the support frame, and the fixed end of the lifting cylinder slides through the support frame.

[0012] The above-mentioned fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway also includes a bottom mold vehicle, which is connected to the bottom mold and is used to drive the bottom mold to move longitudinally.

[0013] The above-mentioned fully automatic demoulding outer mold of an orthogonal and oblique small box beam of a concrete highway, the upper end of the side mold is equipped with a comb plate, and the comb plate is used to enhance the rigidity and stability of the side mold.

[0014] The above-mentioned fully automatic demoulding outer mold of the orthogonal and oblique small box beam of a concrete highway, the transverse movement cylinder movably passes through the sliding seat.

[0015] The above-mentioned fully automatic demoulding outer mold of the orthogonal and oblique small box beam of a concrete highway, the lower end of the support frame is equipped with a plurality of legs, and the legs are used to increase the stability of the side mold during pouring.

[0016] The above-mentioned fully automatic demoulding outer mold of an orthogonal and oblique small box beam of a concrete highway has two ear plates formed at the bottom of the side mold, and a connecting component is detachably and rotatably installed on the movable end of the transverse cylinder, and one end of the connecting component is detachably fixed between the two ear plates.

[0017] The above-mentioned fully automatic demoulding outer mold of an orthogonal and oblique small box girder of a concrete highway, the connecting assembly includes a first connecting frame fixed on the movable end of the transverse cylinder, two pressure rods are rotatably installed in the first connecting frame, and a second connecting frame is rotatably installed on the ear plate, and a longitudinally arranged motion groove is opened in the second connecting frame, and the other end of the pressure rod is movably installed in the motion groove.

[0018] The above-mentioned fully automatic demoulding outer mold of an orthogonal and oblique small box beam of a concrete highway, a moving block is slidably installed in the moving groove, a rotating shaft is formed at one end of the pressure rod located in the moving groove, the rotating shaft is rotatably installed on the corresponding moving block, and an extrusion spring is connected between the moving block and the moving groove.

[0019] In the above technical scheme, the present invention provides a fully automatic demolding outer mold for orthogonal and oblique small box girders of concrete highways, comprising a lateral separation mechanism, a side mold and a transverse cylinder, wherein the transverse cylinder is used to pull the side mold to move laterally so as to separate it from the prefabricated box girder, and the lateral separation mechanism is used to drive the side mold and the transverse cylinder to move laterally as a whole after demolding, and the transverse cylinder is rotatably connected between the lateral separation mechanism and the side mold, so that the side mold can move in the vertical direction, and the docking position of the side mold and the bottom mold in the vertical direction can be adjusted, and when the side mold is vibrated, the vibration in the vertical direction can also be buffered to ensure the connection strength at the connection between the transverse cylinder and the side mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A front view of a fully automatic demoulding outer mold for an orthogonal and oblique small box girder of a concrete highway provided by an embodiment of the present invention.

[0022] Figure 2A schematic diagram of the partial structure of an outer mold for fully automatic demoulding of orthogonal and oblique small box girders for concrete highways provided in one embodiment of the present invention.

[0023] Figure 3 A side view of a clamping mechanism and a wire binding mechanism according to an embodiment of the present invention.

[0024] Figure 4 A cross-sectional view of a connection assembly of a fully automatic demoulding outer mold for an orthogonal and oblique small box girder of a concrete highway provided by another embodiment of the present invention.

[0025] Figure 5 A cross-sectional view of a connection assembly of a fully automatic demoulding outer mold for an orthogonal and oblique small box girder of a concrete highway provided by another embodiment of the present invention.

[0026] Figure 6 A cross-sectional view of a connection assembly of a fully automatic demoulding outer mold for an orthogonal and oblique small box girder of a concrete highway provided by another embodiment of the present invention.

[0027] Figure 7 For the present invention Figure 6 A local enlarged view of point X.

[0028] Figure 8 A schematic diagram of a partial three-dimensional structure of a fully automatic demoulding outer mold for an orthogonal and oblique small box girder of a concrete highway provided in yet another embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Lateral separation mechanism; 11. Lateral movement unit; 12. Slide; 13. Support frame; 14. Lifting cylinder; 15. Leg; 2. Side mold; 21. Comb plate; 22. Ear plate; 23. Connecting assembly; 231. First connecting frame; 232. Pressure rod; 233. Second connecting frame; 234. Moving groove; 235. Moving block; 236. Rotating shaft; 237. Extrusion spring; 238. Anti-pressure block; 24. Protective mechanism; 241. First connecting rod; 242. Second connecting rod; 243. Annular groove; 244. Pressing part; 245. Limiting spring; 246. First connecting groove; 247. Second connecting groove; 248. Fixing piece; 3. Lateral movement cylinder; 4. Bottom mold; 41. Bottom mold vehicle. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-8As shown, an embodiment of the present invention provides a fully automatic demoulding outer mold for an orthogonal oblique small box girder of a concrete highway, comprising two corresponding lateral separation mechanisms 1, a side mold 2, a bottom mold 4 and an inner mold that slide horizontally on the lateral separation mechanism 1, wherein the side mold 2, the bottom mold 4 and the inner mold are jointly limited to enclose a casting cavity, and a lateral displacement cylinder 3 is rotatably installed on the lateral separation mechanism 1, and the movable end of the lateral displacement cylinder 3 is rotatably connected to the lower end of the side mold 2; during demoulding, the lateral displacement cylinder 3 is arranged inclined.

[0033] Specifically in the present embodiment, the lateral separation mechanism 1 is used to drive the two side molds 2 to move laterally closer or farther away. Before pouring, the two side molds 2 are driven to move laterally closer to form a pouring cavity. After demoulding, the two side molds 2 are driven to move laterally away for cleaning and maintenance. The side mold 2 is a plate-like structure as a whole, preferably, including a first horizontal section, an inclined section and a second horizontal section connected in sequence from top to bottom, the first horizontal section is formed on the outside of the inclined section, the second horizontal section is formed on the inside of the inclined section, the second horizontal section is used to dock with the bottom mold 4, the bottom mold 4 corresponds to the bottom of the side mold 2, and is usually a longitudinally arranged rectangular plate-like structure. The inner mold is preferably a hollow trapezoidal plate-like structure, and the two side molds 2, a bottom mold 4 and an inner mold (not shown in the figure) are The area formed is the casting cavity. Of course, steel bars are arranged in advance in the casting cavity to strengthen the connection strength of the box girder. This is the prior art and will not be elaborated on. The transverse cylinder 3 includes a fixed end and a movable end. The fixed end of the transverse cylinder 3 is rotatably mounted on the transverse separation mechanism 1, and the movable end of the transverse cylinder 3 is rotatably mounted on the lower end of the side mold 2. The transverse cylinder 3 is tilted on the vertical plane and can be regarded as tilted in a plane rather than in a space. This is to ensure that the force of the transverse cylinder 3 can be kept concentrated during demoulding. The tilted state of the transverse cylinder 3 is that the end of the movable end is above the end of the fixed end, that is, the side of the transverse cylinder 3 close to the side mold 2 is tilted upward, and the transverse separation mechanism 1 drives the side mold 2 to move transversely. The movement actually drives the lateral movement cylinder 3 and the side mold 2 as a whole to move laterally. The main function of the lateral movement cylinder 3 is to pull the side mold 2 to move laterally for demoulding. The two lateral movement power sources are set here mainly because the lateral separation mechanism 1 is to ensure that it can drive the side mold 2 to move laterally over a large range. Therefore, most of them adopt the method of motor plus screw (the driving method of converting rotation into linear motion adopted in the prior art, which is not repeated here) to drive the side mold 2 to move laterally. However, this method cannot provide a large enough pulling force to pull the side mold 2 to separate laterally. Therefore, only two power sources can be used to first pull and demould the side mold 2 and then separate the side mold 2 laterally. In addition, the lateral movement cylinder 3 is also limited in size and cannot move the side mold 2 over a large range. When demoulding, first pull the side mold 2 outwardly by the transverse oil cylinder 3 to move laterally so as to separate the side mold 2 from the cast box beam. After demoulding, the side mold 2 is driven to move laterally away by the transverse separation mechanism 1. It should also be noted that during demoulding, the transverse oil cylinder 3 performs multi-dimensional movements. Since the transverse oil cylinder 3 is arranged obliquely, during demoulding, the movable end of the transverse oil cylinder 3 will not only shrink inwardly toward the fixed end, but the transverse oil cylinder 3 as a whole will also gradually rotate toward the horizontal plane. The inclined arrangement of the transverse oil cylinder 3 can divide the pulling force on the side mold 2 into a transverse horizontal outward component and a vertical downward component, which is more conducive to demoulding the side mold 2. After demoulding, the movable end of the transverse oil cylinder 3 remains stationary and no longer stretches or shrinks.In addition, since the lateral oil cylinder 3 is rotatably connected between the lateral separation mechanism 1 and the side mold 2, it also provides working conditions for the vertical movement of the side mold 2, and the docking position of the side mold 2 and the bottom mold 4 in the vertical direction can be adjusted to facilitate accurate docking. Moreover, when the side mold 2 vibrates, the vibration in the vertical direction can be buffered to ensure the connection strength of the lateral oil cylinder 3 and the side mold 2. ;

[0034] In a complete box girder casting preparation process, it can be roughly divided into the following three working steps: 1. Formwork docking: drive the side form 2, bottom form 4 and inner form to move to the corresponding working position for docking to form a casting cavity; 2. Casting and compaction: pour concrete into the casting cavity and vibrate and compact the concrete in real time; 3. Demolding and separation: after the concrete is cooled and formed, the side form 2, bottom form 4 and inner form are demolded.

[0035] In another embodiment provided by the present invention, the lateral separation mechanism 1 includes a lateral movement unit 11, a slide 12 is installed on the upper end of the lateral movement unit 11, a support frame 13 is slidably installed on the slide 12, and the sliding direction of the support frame 13 is lateral sliding. The slide 12 is mainly used to support and limit the support frame 13 and the side mold 2. The end of the support frame 13 close to the side mold 2 is fixedly connected to the side mold 2. The lateral movement unit 11 is preferably a combination of a lead screw and a motor. The motor drives the lead screw to rotate and then controls the slide 12 to move laterally. The lateral movement unit 11 drives the lateral oil The cylinder 3 and the slide 12 can move laterally. This solution is a prior art and will not be described in detail. During demolding, the transverse cylinder 3 pulls the side mold 2 to move laterally. At this time, since the support frame 13 and the slide 12 are slidably connected, the support frame 13 also slides on the slide 12 to a certain extent. After demolding is completed, the transverse movement unit 11 drives the slide 12 to move laterally. Since the movable end of the transverse cylinder 3 no longer contracts or extends at this time, the transverse cylinder 3 and the side mold 2 also move laterally. In this way, the overall transverse movement of the transverse cylinder 3, the side mold 2, the slide 12 and the support frame 13 is realized.

[0036] In another embodiment provided by the present invention, a lifting cylinder 14 is fixedly connected to the slide 12, and the number of the lifting cylinders 14 is preferably two. The movable end of the lifting cylinder 14 is slidably connected to the support frame 13, and the sliding direction of the support frame 13 is lateral sliding, that is, the lateral movement of the support frame 13 will not drive the lateral movement of the lifting cylinder 14, and in the vertical direction, when the movable end of the lifting cylinder 14 and the support frame 13 are synchronously moved, the lifting cylinder 14 can push the support frame 13 to move vertically, thereby adjusting The position of the side mold 2 in the vertical direction is to ensure the accuracy of the docking between the side mold 2 and the bottom mold 4; in the present embodiment, the support frame 13 is an inverted "F" type structure, and the support frame 13 has two horizontal parts, namely, a first horizontal part and a second horizontal part, and the first horizontal part is slidably connected to the movable end of the jacking cylinder 14, and the fixed end of the jacking cylinder 14 slides through the second horizontal part and is fixed to the slide 12, so as to ensure that the jacking cylinder 14 will not interfere with the lateral movement of the side mold 2 and can also move synchronously with the slide 12.

[0037] In another embodiment provided by the present invention, it also includes a bottom mold trolley 41, which is connected to the bottom mold 4. The bottom mold trolley 41 is used to drive the bottom mold 4 to move longitudinally in a large range, and can drive the bottom mold 4 to move to other working positions.

[0038] In another embodiment provided by the present invention, a comb plate 21 is installed on the upper end of the side mold 2, and the comb plate 21 is used to enhance the rigidity and stability of the side mold 2.

[0039] In another embodiment provided by the present invention, a transversely arranged through-hole (not shown in the figure) is opened on the slide 12, and the transverse cylinder 3 moves through the slide 12 through the through-hole. Since the transverse cylinder 3 can not only contract or extend but also rotate, the height of the through-hole is not less than the maximum projection length of the inclined transverse cylinder 3 in the vertical direction.

[0040] In another embodiment provided by the present invention, a plurality of legs 15 are installed at the lower end of the support frame 13, and the legs 15 are used to increase the stability of the side mold 2 during pouring. The legs 15 are preferably jacks. After the pouring cavity is formed, the bottom of the legs 15 are supported on the ground to stabilize the side mold 2. When the side mold 2 moves laterally, the length of the legs 15 is reduced and does not contact the ground, that is, the legs 15 are a telescopic structure with adjustable length.

[0041] In another embodiment provided by the present invention, when the movable end of the transverse cylinder 3 is directly connected to the side mold 2 for rotation, the connection between the transverse cylinder 3 and the side mold 2 will be subjected to the vibration of the side mold 2. After multiple relative rotations, the connection between the transverse cylinder 3 and the side mold 2 will inevitably be worn. However, the transverse cylinder 3 and the side mold 2 cannot be easily replaced. For this reason, the present embodiment provides a further solution to the above problem. Two ear plates 22 are formed at the bottom of the side mold 2. A connecting component 23 is detachably and rotatably installed on the movable end of the transverse cylinder 3. One end of the connecting component 23 is detachably fixed between the two ear plates 22. In this way, direct connection between the transverse cylinder 3 and the side mold 2 is avoided. When the contact position between the connecting component 23 and the ear plate 22 is severely worn or damaged, the connecting component 23 can be directly replaced. In the present embodiment, the connecting component 23 can preferably be an elastic connecting rod.

[0042] Obviously, in the above embodiments, refer to Figure 4The connection assembly 23 can only be replaced regularly or after manual inspection. However, when the connection between the lateral cylinder 3 and the side mold 2 is worn, it may cause the bottom of the side mold 2 to be insufficiently fitted with the side wall of the bottom mold 4. This is because when the lateral motion unit 11 drives the side mold 2 to dock with the bottom mold 4, the force point at the bottom of the side mold 2 (that is, the connection between the lateral cylinder 3 and the side mold 2) is concentrated. If the connection between the lateral cylinder 3 and the side mold 2 is worn, it may cause the side mold 2 to be slightly deviated in the horizontal direction. Rotation further leads to insufficient docking and fitting between the bottom of the side mold 2 and the side wall of the bottom mold 4; to solve the above technical problems, the present invention provides another embodiment, there is a certain distance between the two ear plates 22, the connecting assembly 23 includes a first connecting frame 231 fixed to the movable end of the transverse oil cylinder 3, two pressure rods 232 are rotatably installed in the first connecting frame 231 through a connecting shaft, and a second connecting frame 233 is rotatably installed on the ear plate 22, the distance between the ear plates 22 is slightly smaller than the length of the second connecting frame 233, and the second connecting A longitudinally arranged motion groove 234 is provided in the frame 233, and the other end of the pressure rod 232 is movably installed in the motion groove 234; a motion block 235 is slidably installed in the motion groove 234, and a rotating shaft 236 is formed at one end of the pressure rod 232 located in the motion groove 234, and the rotating shaft 236 is rotatably installed on the corresponding motion block 235, and an extrusion spring 237 is connected between the motion block 235 and the motion groove 234. The end of the pressure rod 232 located in the motion groove 234 can not only slide longitudinally with the motion block 235, but also rotate with the connecting shaft as the center of the circle. For the end of the pressure rod 232 located in the motion groove 234, the movement of the end of the pressure rod 232 located in the motion groove 234 is actually a combination of sliding and circular motion, which will also make the movement of the rotating shaft 236 a combination of sliding and circular motion; in the initial state, under the elastic action of the extrusion spring 237, the two pressure rods 232 can be parallel to each other or have a certain initial angle, and the range of the initial angle is not greater than 6 degrees.

[0043] Specifically, when the lateral motion unit 11 drives the side mold 2 to dock with the bottom mold 4, the lateral motion cylinder 3 is started to squeeze the movable end of the lateral motion cylinder 3 in the direction close to the side mold 2. At this time, the first connecting frame 231 is squeezed in the direction close to the side mold 2. In this way, the distance between the first connecting frame 231 and the second connecting frame 233 is reduced, thereby pushing the moving block 235 to slide quickly longitudinally in the moving groove 234 and move away. At the same time, the squeezing spring 237 is compressed, and the rotating shaft 236 and the moving block 235 also rotate relative to each other. The pressure rod 232 undergoes a movement composed of sliding and rotating and moves in a direction gradually parallel to the first connecting frame 231. At this time, due to the existence of the squeezing spring 237 and a certain distance between the two pressure rods 232 Angle, therefore, the pressure applied by the pressure rod 232 to the moving block 235 and the second connecting frame 233 is parallel to the pressure rod 232, which brings about a component force for lateral outward extrusion, and lateral extrusion is performed on the second connecting frame 233, the ear plate 22 and the side mold 2, so that the side mold 2 is docked and fitted on the bottom mold 4, and the pressure direction applied by the pressure rod 232 to the side mold 2 is gradually changed, so that the force points at the bottom of the side mold 2 are dispersed, even if the wear at the connection between the transverse cylinder 3 and the side mold 2 is large, and the side mold 2 is slightly deflected in the horizontal direction, the bottom of the side mold 2 can be squeezed to dock and press it tightly against the side wall of the bottom mold 4, so as to avoid inaccurate docking. At this time, the transverse cylinder 3 can not only perform demolding but also assist in the compact docking of the bottom of the side mold 2 and the side wall of the bottom mold 4.

[0044] For further information, see Figure 5When the transverse oil cylinder 3 is demoulding, the movable end of the transverse oil cylinder 3 pulls the first connecting frame 231 to move away from the side mold 2. The demoulding between the side mold 2 and the box beam includes two situations. One is that the side mold 2 and the box beam are gradually separated, and the other is that after the pulling force reaches a certain size, the side mold 2 and the box beam are instantly separated; during demoulding, the distance between the first connecting frame 231 and the second connecting frame 233 tends to increase, which will pull the pressure rod 232 closer to each other and parallel to the pulling direction of the transverse oil cylinder 3, and due to the pulling force of the transverse oil cylinder 3 during demoulding The pulling force is relatively large, therefore, the elastic force of the extrusion spring 237 cannot prevent the pressure rod 232 from gradually becoming parallel to the pulling direction of the transverse cylinder 3. When the second demoulding situation occurs, at the moment when the side mold 2 is demoulded, the side mold 2 will give a huge instantaneous pressure to the second connecting frame 233. Since the pressure rod 232 is parallel to the pulling direction of the transverse cylinder 3 at this time, the pressure is directly transmitted to the transverse cylinder 3 through the pressure rod 232 and the first connecting frame 231, and damages the transverse cylinder 3. For this reason, the present embodiment provides a further solution to improve the performance of the present invention. The connecting assembly 23 solves the above problem; a pressure-resistant block 238 is formed in the middle of the movement groove 234, and the pressure-resistant block 238 has a certain width. In the initial state, the extrusion spring 237 is in a compressed state and the movement block 235 is tightly attached to the pressure-resistant block 238, that is, the initial state of the pressure rod 232 is limited, and the pressure rod 232 cannot be parallel to the pulling direction of the transverse oil cylinder 3. When pulling, there is always a certain angle between the two pressure rods 232. In this way, when the instantaneous pressure is transmitted to the first connection frame 231, There will be no phenomenon that pressure is directly transmitted to the transverse cylinder 3 through the pressure rod 232 and the first connecting frame 231. At the moment of demoulding, the instantaneous pressure squeezes the inclined pressure rod 232, increases the angle between the two pressure rods 232, and compresses the squeezing spring 237. In this way, the instantaneous pressure is buffered to prevent it from being directly transmitted to the transverse cylinder 3 and causing damage to it. Through the simple improvement of the connecting component 23 through the above scheme, it can not only assist the docking of the side mold 2 and the bottom mold 4, but also buffer the instantaneous pressure during demoulding.

[0045] Further, see Figure 6-8, when the demoulding situation between the second side form 2 and the box girder occurs, in the limit state, the force exerted by the side form 2 on the second connection frame 233 will cause the extrusion spring 237 to be quickly compressed to the limit position, and it will still impact the transverse movement oil cylinder 3 in a short time. Therefore, this embodiment provides a further solution to protect the transverse movement oil cylinder 3. A protection mechanism 24 is installed at one end of the pressure rod 232 located in the movement groove 234. It should be particularly noted that in this embodiment, the pressure rod 232 is of a split structure and is composed of a first connecting rod 241 and a second connecting rod 242. The first connecting rod 241 is rotatably connected in the first connection frame 231. The rotating shaft 236 is formed in the middle of the second connecting rod 242. An annular groove 243 is formed in the second connecting rod 242. A groove is formed on the outer wall of one side of the rotating shaft 236 located in the annular groove 243. A pressing part 244 is slidably installed in the groove. The pressing part 244 is preferably a square block. More preferably, one end of the pressing part 244 close to the rotating direction during demoulding is an inclined surface. A limiting spring 245 is connected between the pressing part 244 and the groove. The limiting spring 245 is used to limit the initial position of the pressing part 244. In addition, a first connection groove 246 is formed on the first connecting rod 241, and a second connection groove 247 is formed on the second connecting rod 242. A fixing part 248 is clamped between the first connection groove 246 and the second connection groove 247. The first connecting rod 241 and the second connecting rod 242 are fixedly connected together through the fixing part 248. The fixing part 248 is of a U-shaped structure and is composed of two fixing ends and a connecting section. One end of the fixing part 248 far from the rotating shaft 236 is the first fixing end, and one end of the fixing part 248 close to the rotating shaft 236 is the second fixing end. The connecting section is connected between the first fixing end and the second fixing end. The second fixing end passes through the second connection groove 247 and extends into the annular groove 243. An inclined surface is provided on the second fixing end. The inclined surface on the second fixing end is correspondingly arranged with the pressing part 244; during demoulding, when the centrifugal force received by the pressing part 244 is too large, that is, when the force exerted by the side form 2 on the second connection frame 233 causes the extrusion spring 237 to exceed the limit compression state, the pressing part 244 will contact and squeeze the fixing part 248 to pop out in advance, avoiding the extrusion spring 237 reaching the limit compression state.

[0046] When the side mold 2 and the box beam are separated instantaneously, there are also two situations. One is that the force given by the side mold 2 to the second connecting frame 233 has not reached the limit state. At this time, the force given by the side mold 2 to the second connecting frame 233 can be buffered by the extrusion spring 237, which is defined as the first working condition. The second is that the force given by the side mold 2 to the second connecting frame 233 reaches and exceeds the limit state. At this time, the force given by the side mold 2 to the second connecting frame 233 exceeds the pressure of the extrusion spring 237 when it is compressed to the limit, which is defined as the second working condition. In the first working condition, the moving block 235 slides longitudinally and moves away quickly. At this time, the rotating shaft 236 moves synchronously, and the actual movement of the rotating shaft 236 is a combination of sliding and annular movement (but the rotating shaft 236 and the moving block 235 actually rotate relative to each other). Therefore, the annularly moving rotating shaft 236 will be subjected to a certain centrifugal force. Under the action of the centrifugal force, the top pressing part 244 slides out of the groove and stretches the limit spring 245. The continuous movement of the rotating shaft 236 will cause the top pressing part 24 4 is fitted on the annular groove 243 for rotation. However, at this time, the force applied by the side mold 2 to the second connecting frame 233 can be buffered by the squeezing spring 237. Therefore, the pressing portion 244 does not rotate to the position of contacting the second fixed end on the fixing member 248. In the second working condition, at this time, the force applied by the side mold 2 to the second connecting frame 233 cannot be buffered by the squeezing spring 237. The movement of the pressing portion 244 makes it contact with the second fixed end on the fixing member 248 (at this time, the limit state of the squeezing spring 237 has not been reached). The pressing portion 244 continues to rotate relatively to squeeze the fixing member 248 to move out of the first connecting groove 246 and the second connecting groove 247. When the fixing member 248 is no longer clamped in the first connecting groove 246 and the second connecting groove 247 (at this time, the limit state of the squeezing spring 237 has not been reached), the second connecting rod 242 and the first connecting rod 241 are no longer directly connected together. In this way, the second connecting rod 242 and the first connecting rod 241 are disconnected in advance to protect the transverse oil cylinder 3.

[0047] Furthermore, the above-mentioned protection mechanism 24 also has other functions. When the bottom of the side mold 2 and the side wall of the bottom mold 4 are not sufficiently fitted together, the transverse cylinder 3 pushes the first connecting frame 231 to move in a direction close to the side mold 2 so that the pressure rod 232 can squeeze multiple positions of the side mold 2. At this time, the rotating shaft 236 also performs a compound movement, but the process is slow and stable. The centrifugal force on the rotating shaft 236 is obviously unable to drive the top pressing portion 244 to slide out of the groove. That is to say, during the entire process of the transverse cylinder 3 pushing the first connecting frame 231 to move in a direction close to the side mold 2, the top pressing portion 244 will not contact the fixing member 248. This will not cause the second connecting rod 242 and the first connecting rod 241 to be disconnected. In this way, the transverse cylinder 3 can push and compress the extrusion spring 237 to the extreme position, which can ensure the force range between the bottom of the side mold 2 and the side wall of the bottom mold 4, and can also ensure the docking strength of the side mold 2 and the bottom mold 4. This is the main reason for setting the top pressure part 244, the groove and the limit spring 245; in summary, when the transverse cylinder 3 pushes the first connecting frame 231 to move toward the direction close to the side mold 2, the extrusion spring 237 can reach the extreme state, but when the transverse cylinder 3 pulls the side mold 2 to demold, the extrusion spring 237 cannot reach the extreme state.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fully automatic demoulding outer mold for orthogonal oblique small box beams of concrete highways, comprising two corresponding lateral separation mechanisms, side molds, bottom molds and inner molds that slide horizontally on the lateral separation mechanisms, wherein the side molds, bottom molds and inner molds are mutually limited to enclose a casting cavity, characterized in that: A transverse oil cylinder is rotatably mounted on the transverse separation mechanism, and the movable end of the transverse oil cylinder is rotatably connected to the lower end of the side mold; During demoulding, the transverse oil cylinder is arranged in an inclined manner; Two ear plates are formed at the bottom of the side mold, and a connecting component is detachably and rotatably installed on the movable end of the transverse oil cylinder, and one end of the connecting component is detachably fixed between the two ear plates; The connecting assembly comprises a first connecting frame fixed on the movable end of the transverse oil cylinder, two pressure rods are rotatably mounted in the first connecting frame, a second connecting frame is rotatably mounted on the ear plate, a longitudinally arranged motion groove is provided in the second connecting frame, and the other end of the pressure rod is movably mounted in the motion groove; A moving block is slidably installed in the moving groove, a rotating shaft is formed at one end of the pressure rod located in the moving groove, the rotating shaft is rotatably installed on the corresponding moving block, and a compression spring is connected between the moving block and the moving groove; An anti-compression block is formed in the middle of the movement groove, and the anti-compression block has a certain width. In the initial state, the extrusion spring is in a compressed state and the movement block is tightly attached to the anti-compression block. When pulling, there is always a certain angle between the two pressure rods.

2. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 1 is characterized in that: The lateral separation mechanism comprises a lateral movement unit, a slide is mounted on the upper end of the lateral movement unit, a support frame is slidably mounted on the slide, and one end of the support frame close to the side mold is fixedly connected to the side mold.

3. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 2 is characterized in that: A lifting oil cylinder is fixedly connected to the sliding seat, a movable end of the lifting oil cylinder is slidably connected to the support frame, and a fixed end of the lifting oil cylinder slides through the support frame.

4. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 1 is characterized in that: It also includes a bottom mold trolley, which is connected to the bottom mold and is used to drive the bottom mold to move longitudinally.

5. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 1 is characterized in that: A comb plate is installed on the upper end of the side mold, and the comb plate is used to enhance the rigidity and stability of the side mold.

6. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 2 is characterized in that: The transverse oil cylinder moves through the slide seat.

7. The fully automatic demoulding outer mold for orthogonal and oblique small box beams of concrete highway according to claim 6 is characterized in that: A plurality of legs are installed at the lower end of the support frame, and the legs are used to increase the stability of the side form during pouring.

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