Box girder steel mould with demoulding mechanism

Abstract

The application relates to the technical field of box girder prefabrication, and discloses a demolding mechanism for a box girder steel mold, which comprises lifting and moving devices which are distributed on opposite sides of a pedestal, correspondingly match the side molds on the two sides of the pedestal, and are used for driving the corresponding side molds to move along the height or width direction of the pedestal; supporting pieces are screw-connected to the bottom of the side molds; a plurality of plug-in seats are distributed along the length direction of the side molds and are slidably arranged on the side molds along the width direction of the pedestal; the plug-in seat comprises a plug-in section and an abutting section which are connected, and the pedestal is provided with a connecting hole along the width direction of the pedestal, the plug-in section of the two plug-in seats being inserted into the connecting hole; a connecting assembly is used for simultaneously connecting all the plug-in seats on the same side mold; a push-pull power source is arranged on the side mold and is detachably connected with the connecting assembly; a rotating assembly is arranged on the side mold and is used for driving the plug-in seats on the same side mold to rotate together; and a locking assembly is arranged between the two plug-in seats. The demolding efficiency of the box girder can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of box girder prefabrication, and in particular to a demoulding mechanism for a box girder steel mold. Background Art

[0002] Box girders are often prefabricated. During prefabrication, an inner mold and an outer mold made of steel are constructed to form a casting space, and concrete is poured into the casting space to form the box girder.

[0003] The external formwork system of the existing box girder includes a pedestal, side forms and tension screws. A steel plate is laid on the top surface of the pedestal as a bottom formwork, and the side forms are arranged on opposite sides of the pedestal. The bottom of the side formwork is threadedly connected to a support to support the side formwork. The pedestal is provided with multiple reserved holes for the tension screws to pass through along its own length. The tension screws are passed through the pedestal and the side formwork on both sides of the pedestal at the same time to limit the side formwork.

[0004] With regard to the above-mentioned related technologies, when demolding the side form, it is necessary to first remove the tension screws from the side form, and then adjust the position of the bottom support of the side form to lower the side form and separate it from the formed box beam. Since there are multiple tension screws along the length direction of the side form, it takes a long time to remove the tension screws one by one, resulting in low demolding efficiency of the box beam. Summary of the Invention

[0005] In order to improve the demoulding efficiency of the box girder, the present application provides a demoulding mechanism for the box girder steel mold.

[0006] The present application provides a demoulding mechanism for a box girder steel mold, which adopts the following technical solution:

[0007] A demoulding mechanism for a box beam steel mold, comprising:

[0008] Lifting devices are distributed on opposite sides of the pedestal and respectively cooperate with the side molds on both sides of the pedestal to drive the corresponding side molds to move along the height or width direction of the pedestal;

[0009] A support member, connected to the bottom of the side mold with upper and lower threads, for supporting the side mold;

[0010] A plurality of plug sockets are distributed along the length direction of the side mold and are slidably provided on the side mold along the width direction of the base. The plug sockets on the side molds on opposite sides of the base correspond one to one. The plug sockets include a connected plug section and an abutment section, and the base is provided with a connecting hole along its own width direction for the plug sections of the two opposite plug sockets to be inserted together.

[0011] Connecting components to simultaneously connect all sockets on the same side mold;

[0012] A push-pull power source is provided on the side mold and is detachably connected to the connecting assembly, and is used to drive the connecting assembly and the plug socket to move toward or away from the platform along the width direction of the platform;

[0013] A rotating assembly, disposed on the side mold, for driving the connector on the same side mold to rotate together; and

[0014] A locking assembly is provided between the two opposite sockets;

[0015] When the side mold and the pedestal form a casting space, the abutment section of the socket clamps the side mold together with the pedestal, the plug-in section of the socket is inserted into the connecting hole, and the two relative sockets rotate in opposite directions so that the two relative plug-in sections are locked or unlocked by the locking assembly.

[0016] By adopting the above technical solution, when demoulding, the rotating component first drives the socket to rotate, and the two opposite sockets are unlocked from each other, and then connected to the connecting component through a push-pull power source, driving the sockets on the same side mold to move together to disengage from the connection hole, and then the side mold is supported by the lifting device, and the support is moved upward by threading, so that the lifting device can lower the side mold, thereby separating the side mold from the formed box beam, so that the sockets that connect and lock the side molds on both sides of the pedestal can quickly detach from the pedestal together, thereby improving the demoulding efficiency of the box beam.

[0017] Optionally, the lifting device includes:

[0018] a base, opposite to the side of the pedestal;

[0019] A telescopic power source is provided on the base and is telescopic along the height direction of the pedestal; and

[0020] The translational power source is installed on the base and connected to the telescopic power source, and is used to drive the telescopic power source to move along the width direction of the base.

[0021] By adopting the above technical solution, the telescopic power source lifts the side mold, and when the telescopic power source cooperates with the side mold, the translational power source drives the side mold to move along the width direction of the base, so that the base can drive the side mold to move along the width direction of the base.

[0022] Optionally, the lifting device is equipped with a movable track, which extends along the length direction of the platform, and the base is rotatably connected to a traveling wheel that rolls on the movable track.

[0023] By adopting the above technical solution, the lifting device moves on the movable track via the running wheels, allowing the lifting device to drive the side formwork to move along the direction of the pedestal. Therefore, after one box girder is cast, the side formwork can be moved to the end of the box girder to cast the next box girder, so that the two box girders are connected into a whole, thereby enabling the casting of box girders of different lengths. In addition, when the lifting device moves on the movable track, the translational power source moves the side formwork away from the pedestal, so that the side formwork is not easily affected by interference from the pedestal and wear when moving along the length direction of the pedestal.

[0024] Optionally, the connecting assembly includes a guide rod, an elastic member, a rotating seat and a connecting rod, wherein the rotating seat corresponds to the abutting section one by one and is rotatably connected to the connecting rod;

[0025] The guide rod is slidably inserted into the abutment section along the width direction of the pedestal, and the guide rod is connected to the rotating seat corresponding to the abutment section in a direction away from the abutment section, and one end of the guide rod away from the connecting rod passes through the abutment section and is provided with a limiting portion, and the limiting portion is used to limit the abutment section from separating from the guide rod in a direction away from the connecting rod;

[0026] The elastic member is connected between the abutting section and the corresponding rotating seat, and is used for driving the abutting section and the connecting rod to move away from each other.

[0027] By adopting the above technical solution, when the connecting component moves toward the pedestal, the elastic force of the elastic member drives the abutting section toward the pedestal and presses against the side mold, and when the side mold as a whole moves toward the pedestal until the plug-in socket is not aligned with the connecting hole, and the pedestal pushes the plug-in socket away from the pedestal, the elastic member is compressed, thereby adjusting the side mold to when the plug-in section is opposite to the connecting hole, and the elastic force of the elastic member can push the plug-in section to automatically insert into the connecting hole.

[0028] Optionally, at least two guide rods are provided for cooperating with each abutting section.

[0029] By adopting the above technical solution, each abutting section cooperates with at least two guide rods, which can improve the ability of the guide rods to guide the movement of the abutting section.

[0030] Optionally, the push-pull power source is connected to the connecting rod via bolts.

[0031] By adopting the above technical solution, the connecting seat and the connecting rod are detachably connected by bolts, which can make the connection between the connecting seat and the connecting rod convenient and quick.

[0032] Optionally, the rotating assembly includes:

[0033] A rotating ring, corresponding one-to-one with the plug-in seat, is rotatably connected to the outer wall of the side mold, with an axial direction parallel to the width direction of the base, having a penetration cavity for the plug-in section to penetrate along the width direction of the base, and teeth distributed along its circumferential outer wall;

[0034] A boss is provided on the inner wall of the through-cavity of the rotating ring, and the plug-in section is provided with a travel groove for the boss to slide along the width direction of the pedestal;

[0035] The rack slides on the outer wall of the side mold in a direction parallel to the base and simultaneously engages with all the rotating rings on the same side mold;

[0036] The pushing member is connected to the side mold and is respectively opposite to the two ends of the rack that are away from each other, and is used to push the rack to move along a direction parallel to the length of the base.

[0037] By adopting the above technical solution, the rack is pushed to move by the pushing member to mobilize the rotating ring to rotate, and the rotating rotating ring drives the socket to rotate.

[0038] Optionally, a travel rod is connected to the side mold, a travel bar is connected to the rack, the travel bar is slidably mounted on the travel rod along the length direction of the base, and the travel rod is threadedly connected to stop members at positions corresponding to the opposite ends of the travel bar.

[0039] By adopting the above technical solution, the stop member abuts against the end of the travel bar, so that the rack can still be limited when the pushing member is separated from the rack.

[0040] Optionally, the locking assembly includes:

[0041] An insert rod is connected to the end of one of the plug sections of the two opposite plug sockets, and the end of the other plug section has a slot for the insert rod to be inserted; and

[0042] A locking post protrudes outward from the outer wall of the insertion rod, and the insertion section having the slot is provided with a locking groove on the inner wall of the slot for the locking post to slide;

[0043] In which, the locking groove includes a straight portion and a circumferential portion, the straight portion extends along the length direction of the plug-in section, and the circumferential portion extends circumferentially along the plug-in section, and when the side molds on both sides of the pedestal jointly clamp the pedestal, and the abutment section and the pedestal jointly clamp the side mold, the locking column can slide from the straight portion into the circumferential portion.

[0044] By adopting the above technical solution, the lifting device drives the side molds on both sides of the base to clamp the base, so that when the relative sockets are inserted into the connecting holes, the locking column is inserted into the straight part of the locking groove, and the sockets are driven to rotate through the rotating assembly, so that the locking column enters the peripheral part, thereby locking the two relative sockets with each other.

[0045] Optionally, the portion of the side mold opposite to the base has a rubber strip, and the peripheral portion is inclined in a direction away from the straight portion toward the abutment section close to the same socket.

[0046] By adopting the above technical solution, the peripheral portion is inclined to further improve the locking effect between the locking column and the peripheral portion.

[0047] In summary, this application has the following beneficial effects:

[0048] By connecting the push-pull power source with the connecting component, all the sockets on the same side mold are driven to move together, so that the sockets on the side mold can be plugged into the pedestal at the same time, and the sockets on both sides of the pedestal are driven to rotate by the rotating component, so that the sockets opposite to each other on both sides of the pedestal are locked or separated from each other at the same time, thereby improving the demoulding efficiency of the box beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural diagram of an embodiment of the present application;

[0050] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the present application;

[0051] Figure 3 This is a schematic structural diagram of the lifting device in an embodiment of the present application;

[0052] Figure 4 2 is a schematic diagram of the front structure of the side mold in the embodiment of the present application;

[0053] Figure 5 This is a schematic structural diagram of a socket in an embodiment of the present application;

[0054] Figure 6 yes Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0055] Figure 7 Schematic diagram of the side view of the template in the embodiment of the present application;

[0056] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure at B in the middle;

[0057] Figure 9 This is a schematic diagram of the structure of the connection assembly and the side mold in the embodiment of the present application;

[0058] Figure 10 It is a structural diagram of the connection components in an embodiment of the present application.

[0059] Explanation of reference numerals: 1. pedestal; 2. side mold; 201. template; 202. truss; 3. lifting device; 31. base; 32. telescopic power source; 33. translation power source; 4. support member; 5. plug-in seat; 51. plug-in section; 52. abutment section; 6. connecting hole; 7. connecting assembly; 71. guide rod; 72. elastic member; 73. rotating seat; 74. connecting rod; 8. push-pull power source; 9. rotating assembly; 9 1. Rotating ring; 92. Boss; 93. Rack; 94. Pusher; 10. Locking assembly; 101. Insertion rod; 102. Locking column; 11. Moving track; 12. Travel wheel; 13. Limiting portion; 14. Through-hole; 15. Travel groove; 16. Travel rod; 17. Travel bar; 18. Stop member; 19. Slot; 20. Locking groove; 21. Straight portion; 22. Circumferential portion; 23. Rubber strip; 24. Mounting seat. DETAILED DESCRIPTION

[0060] The following is combined with Figure 1-10 This application is described in further detail.

[0061] The embodiment of the present application discloses a demoulding mechanism for a box beam steel mold. Figure 1 and Figure 2 The demoulding mechanism for the box girder steel mold includes a lifting device 3, a support member 4, a socket 5, a connecting component 7, a push-pull power source 8, a rotating component 9 and a locking component 10.

[0062] Reference Figure 1 and Figure 3 , the lifting device 3 lifts and moves the side molds 2 on the opposite sides of the pedestal 1, and the support member 4 supports the side mold 2 when the lifting device 3 is separated from the side mold 2. A plurality of connectors 5 are provided along the length direction of the side mold 2 and are slidably penetrated on the side mold 2. All connectors 5 on the same side mold 2 are connected to the connecting assembly 7, so that the driving power source can drive the connector 5 to move by driving the connecting assembly 7, and the driving power source drives the connecting assembly 7 to move so that the connector 5 is inserted into or removed from the pedestal 1. The rotating assembly 9 drives the connector 5 to rotate when the connector 5 is inserted into the pedestal 1, so that the connectors 5 on the side molds 2 on the opposite sides of the pedestal 1 are locked by the locking assembly 10.

[0063] Reference Figure 2The base 1 is rectangular and has multiple connection holes 6 for the sockets 5, evenly spaced along its length. The number and location of the sockets 5 on each side form 2 correspond to the connection holes 6. The side form 2 comprises a form 201 and trusses 202, both made of steel. The form 201 forms the exterior of the box girder, while the inner wall of the form 201 is in contact with the concrete. The trusses 202 are fixed to the outer wall of the form 201 to support it, preventing it from deforming due to the pressure of the concrete.

[0064] Reference Figure 1 and Figure 3 The lifting devices 3 cooperate with the trusses 202 of the side molds 2. Each side mold 2 corresponds to two lifting devices 3, and the two lifting devices 3 corresponding to the side molds 2 are distributed along the length of the side molds 2. The bottom surfaces of the pedestal 1 on opposite sides are fixed with movable rails 11. The length of the movable rails 11 extends parallel to the length of the pedestal 1, and the extension length of the movable rails 11 is greater than the extension length of the pedestal 1.

[0065] Each lifting device 3 includes a base 31, a telescopic power source 32, and a translational power source 33. The base 31 is a square base, with a running wheel 12 rotatably connected to the bottom of the base 31. The running wheel 12 cooperates with the moving track 11 to roll on the moving track 11. A first rotating motor is embedded in the base 31, with its output end connected to the running wheel 12. The first rotating motor can rotate forward and reverse to drive the running wheel 12 to rotate.

[0066] The translational power source 33 includes a second rotary motor and a screw. The screw is rotatably connected to the base 31 via a bearing seat, and the length of the screw is parallel to the width of the platform 1. The second rotary motor can rotate forward and reverse and is fixed to the upper surface of the base 31. The output end of the second rotary motor is coaxially fixed to the screw to drive the screw rotation.

[0067] The telescopic power source 32 is a first pneumatic cylinder. The base of the first cylinder abuts against the upper surface of the base 31 and is threadedly connected to a screw. A second rotary motor drives the screw to rotate, thereby driving the telescopic power source 32 to move. The telescopic rod of the telescopic power source 32 is arranged upward and extends vertically. The telescopic rod of the telescopic power source 32 is opposite the truss 202 of the side form 2, so that when the telescopic rod of the telescopic power source 32 is extended, it can contact the truss 202 to lift the side form 2 upward.

[0068] There are multiple support members 4, which are evenly spaced on the truss 202 of the side form 2. The support members 4 include studs and a base. The base is fixed to the lower surface of the stud. The upper and lower threads of the stud are connected to the bottom of the truss 202. The side form 2 is supported by the base being in contact with the ground, and the height of the ground in the side form 2 is adjusted by moving the studs on the truss 202.

[0069] When the box girder needs to be cast, the side form 2 is first moved to be opposite to the pedestal 1 by cooperating with the moving track 11 and the walking wheel 12, and then the side form 2 is driven to move along the height direction of the pedestal 1 by the telescopic power source 32, and the side form 2 is driven to move along the width direction of the pedestal 1 by the translation power source 33, so that the inner wall of the lower end of the side form 2 template 201 is against the side wall of the pedestal 1, and the socket 5 is inserted into the corresponding connecting hole 6 for locking, so that a casting space for pouring concrete is formed between the template 201 and the pedestal 1, and then the support member 4 is threadedly moved to against the ground and the telescopic power source 32 is retracted, so that the side form 2 is supported by the support member 4.

[0070] When the box girder needs to be demolded after casting, first unlock the socket 5 and move the socket 5 off the platform 1, then extend the telescopic rod of the telescopic power source 32 until it is against the bottom of the truss 202 to support the side form 2, and then move the support member 4 upward by threading to make the support member 4 separate from the ground, and then retract the telescopic rod of the telescopic power source 32 so that the side form 2 is driven downward by its own gravity until the support member 4 is against the ground, thereby separating the side form 2 from the formed box girder.

[0071] After the side form 2 is separated from the box beam downward, the telescopic power source 32 is pressed against the side form 2, and the side form 2 is driven to move away from the pedestal 1 through the translational power source 33. Then, the side form 2 is driven to move to the end of the formed box beam through the cooperation of the moving track 11 and the walking wheel 12 to cast the next box beam, or the side form 2 is moved to cooperate with the next pedestal 1 to cast the box beam.

[0072] Reference Figure 2 and Figure 4 , the sockets 5 on the mold plates 2 on both sides of the base 1 correspond one to one, and the two corresponding sockets 5 can be plugged into the same connection hole 6 from both sides of the base 1. Figure 5 The plug-in socket 5 includes an integrally formed plug-in section 51 and an abutting section 52. The plug-in section 51 and the abutting section 52 are both cylindrical and coaxially arranged, and the outer diameter of the abutting section 52 is larger than the outer diameter of the plug-in section 51. The plug-in section 51 is slidably penetrated on the template 201 along the width direction of the base 1, and the aperture of the connecting hole 6 is consistent with the outer diameter of the plug-in section 51 for insertion of the plug-in section 51.

[0073] Reference Figure 4 and Figure 6, the locking assembly 10 is arranged between the two sockets 5 corresponding to the two side boxes of the pedestal 1. The locking assembly 10 includes an insert rod 101 and a locking column 102. The insert rod 101 is cylindrical, and the outer diameter of the insert rod 101 is smaller than the outer diameter of the plug section 51. The insert rod 101 is fixed on one of the two opposite plug seats 5, that is, the plug seats 5 of the side mold 2 on one side of the pedestal 1 are all provided with an insert rod 101, while the plug seats 5 of the side mold 2 on the other side of the pedestal 1 are not provided with an insert rod 101, and the insert rod 101 is coaxially fixed to the end of the plug section 51 away from the end of the abutting section 52. Combined Figure 6 In the socket 5 without the plug rod 101 , a slot 19 for plugging the plug rod 101 is formed at one end of the plug section 51 away from the abutment section 52 .

[0074] Reference Figure 5 and Figure 6 The locking post 102 is fixed to the outer wall of the insertion rod 101, and the axis of the locking post 102 is perpendicular to the axis of the insertion rod 101. The insertion section 51 having the slot 19 has a locking groove 20 on the inner wall of the slot 19 for the sliding insertion of the locking post 102. The locking groove 20 includes a straight portion 21 and a peripheral portion 22. The straight portion 21 starts from the end of the insertion section 51 away from the end of the abutment section 52 and extends along the axis of the insertion section 51 toward the abutment section 52; the peripheral portion 22 starts from the end of the straight portion 21 near the abutment section 52 and extends along the circumference of the insertion section 51. The peripheral portion 22 is inclined from the direction away from the straight portion 21 toward the direction close to the abutment section 52.

[0075] Reference Figure 2 、 Figure 5 and Figure 6 The portion of the inner wall of the template 201 that abuts the pedestal 1 is covered with a rubber strip 23, which is elastic and can undergo elastic deformation. When the side mold 2 moves until the template 201 is clamped between the abutment section 52 and the outer wall of the pedestal 1, the plug-in sections 51 of the two opposing plug-in sockets 5 are inserted into the same connection hole 6, the ends of the two plug-in sections 51 approach each other, the insertion rod 101 is inserted into the slot 19, and the locking column 102 is inserted into the straight section 21 and located at the end of the straight section 21 near the peripheral section 22. The rotating assembly 9 then drives the two opposing plug-in sockets 5 to rotate in opposite directions, allowing the locking column 102 to enter the peripheral section 22. When the locking column 102 enters the peripheral section 22 due to the tilting of the peripheral section 22, the side molds 2 on both sides of the pedestal 1 move toward each other, squeezing the rubber strip 23, so that the templates 201 of the side mold 2 are pressed against the pedestal 1.

[0076] Reference Figure 7 and Figure 8The rotating assembly 9 is disposed on the outer wall of the template 201 of the side mold 2. Specifically, the rotating assembly 9 includes a rotating ring 91, a protruding column 92, a rack 93, and a pusher 94. The rotating ring 91 is annular, corresponding one-to-one with the plug socket 5 and rotatably connected to the outer wall of the template 201. The rotating ring 91 is coaxially arranged with the corresponding plug socket 5. The middle of the rotating ring 91 is hollow to form a through-hole 14 for the plug section 51 to slide through. The outer wall of the rotating ring 91 has teeth evenly distributed along its own circumference, and the overall outer diameter of the rotating ring 91 is smaller than the outer diameter of the abutment section 52.

[0077] Reference Figure 8 and Figure 9 The boss 92 is fixed to the inner wall of the rotating ring 91 in the penetration cavity 14, and the boss 92 extends toward the inside of the rotating ring 91 along the radial direction of the rotating ring 91. A travel groove 15 is provided on the outer wall of the plug-in section 51 parallel to its own axial direction for the boss 92 to press into and slide, so that the plug-in section 51 can move axially along the rotating ring 91 and slide through the template 201 at the same time, but relative rotation cannot occur between the plug-in section 51 and the rotating ring 91.

[0078] Reference Figure 7 and Figure 8 The extension direction of the rack 93 is parallel to the length direction of the side mold 2. Each side mold 2 corresponds to a rack 93. The rack 93 corresponding to the side mold 2 is against the outer wall of the template 201 and slides relatively, and the rack 93 simultaneously engages with all the rotating rings 91 on the corresponding side mold 2. The sliding direction of the rack 93 is parallel to the length direction of the side mold 2, so that when the rack 93 slides, the rotating ring 91 is driven to rotate, and then the rotating ring 91 drives the socket 5 to rotate.

[0079] The pushing member 94 is a second cylinder, and each rack 93 corresponds to two pushing members 94. A mounting seat 24 for fixing the base 31 of the pushing member 94 is fixedly protruded on the outer wall of the template 201. The telescopic rod of the pushing member 94 passes through the corresponding mounting seat 24 when it moves. The axial direction of the telescopic rod of the pushing member 94 is parallel to the sliding direction of the rack 93, and the two pushing members 94 are respectively opposite to the two ends of the rack 93 that are far away from each other, and are used to push the rack 93 to move back and forth along the length direction of the side mold 2, and the racks 93 on the side molds 2 on both sides of the base 1 are pushed in opposite directions.

[0080] Before the insertion section 51 is inserted into the pedestal 1, one of the pushers 94 on the side mold 2 extends its telescopic rod, pushing the rack 93 until the locking post 102 of the side mold 2 on one side of the pedestal 1 is aligned with the straight portion 21 of the locking groove 20 of the side mold 2 on the other side of the pedestal 1, so that the locking post 102 can be inserted into the straight portion 21 of the locking groove 20 when the insertion section 51 is inserted into the pedestal 1. When the pedestal 1, the mold plate 201, the rotating wheel, and the abutting section 52 abut against each other in sequence, the other pusher 94 on the side mold 2 extends its telescopic rod, pushing the rack 93 in the opposite direction, so that the locking post 102 enters the peripheral portion 22 of the locking groove 20 and is locked.

[0081] Reference Figure 7 and Figure 8 Furthermore, to reduce energy consumption, the pusher 94 retracts after extending its telescopic rod to push the rack 93. To limit the position of the pushed rack 93, a travel rod 16 is fixed to the template 201 above the rack 93. The travel rod 16 is round and fixed to the mounting base 24. A travel bar 17 is fixed to the upper surface of the rack 93. The travel bar 17 slides along the length of the side mold 2. A stopper 18 is threadedly mounted on the travel rod 16. The stopper 18 is annular and has two ends, one corresponding to the ends of the travel bar 17 that are separated from each other.

[0082] When the rack 93 needs to be pushed, the stopper 18 is threadedly moved away from the travel bar 17, so that the rack 93 is pushed and the travel bar 17 moves on the travel rod 16. When the rack 93 needs to be limited, the two stoppers 18 on the travel rod 16 are threadedly moved until they abut the two ends of the travel bar 17 that are away from each other, thereby restricting the movement of the travel bar 17 on the travel rod 16 and thus restricting the movement of the rack 93.

[0083] Reference Figure 1 and Figure 9 Each side form 2 corresponds to a set of connecting components 7 and a push-pull power source 8, and the push-pull power source 8 is detachably connected to the connecting components 7. The push-pull power source 8 is a third cylinder installed on the truss 202 of the side form 2, and the third cylinder is an existing multi-stage telescopic cylinder.

[0084] Reference Figure 1 and Figure 10The connecting assembly 7 includes a guide rod 71, an elastic member 72, a rotating seat 73, and a connecting rod 74. Each connecting assembly 7 contains only one connecting rod 74. The telescopic rod of the push-pull power source 8 extends along the width of the platform 1, and the end of the telescopic rod of the push-pull power source 8 is detachably connected to the connecting rod 74 via a bolt. The rotating seat 73 is embedded in the connecting rod 74 and rotates relative to the connecting rod 74. The number and position of the rotating seats 73 correspond one-to-one with the abutment sections 52 on the side mold 2. All rotating seats 73 on the same side mold 2 are connected to the same connecting rod 74. When the plug-in base 5 rotates, the rotating seats 73 are driven to rotate by the connecting rod 74.

[0085] Reference Figure 9 and Figure 10 Each abutting section 52 is matched with at least two guide rods 71. In this embodiment, each abutting section 52 is matched with two guide rods 71. One end of the guide rod 71 is fixed on the rotating seat 73 corresponding to the abutting section 52, and the other end of the guide rod 71 is slidably penetrated on the abutting section 52 along the axial direction parallel to the abutting section 52, and the end of the guide rod 71 away from the rotating seat 73 has a limiting portion 13. The limiting portion 13 is block-shaped and the cross-section of the limiting portion 13 is larger than the cross-section of the guide rod 71, so as to limit the abutting section 52 between the limiting portion 13 and the rotating seat 73, so that the abutting section 52 cannot be separated from the guide rod 71.

[0086] The elastic member 72 is a spring and corresponds one-to-one with the abutting section 52. The two ends of the elastic member 72 that are away from each other are respectively connected to the abutting section 52 and the corresponding rotating seat 73. When the limiting portion 13 is pressed against the side of the abutting section 52 facing away from the rotating seat 73, the elastic member 72 is in a compressed state, so that the elastic member 72 always gives the abutting section 52 and the connecting rod 74 a tendency to move away from each other.

[0087] Reference Figure 1 and Figure 9 When the telescopic rod of the push-pull power source 8 is connected to the connecting rod 74 and fully extended, the connecting rod 74 is driven to move toward the template 201, so that the limiting portion 13 abuts against the outer wall of the template 201, so that the abutting section 52 abuts against the rotating ring 91 under the elastic force of the spring, thereby allowing the plug-in section 51 to pass through the template 201, and then allowing the plug-in section 51 to be plugged into the base 1 and locked.

[0088] After the plug-in section 51 is locked in the base 1, the push-pull power source 8 is separated from the connecting rod 74 and retracted to reduce energy consumption. At this time, the connecting rod 74 is moved away from the abutting section 52 by the elastic force of the elastic member 72, and the limiting portion 13 abuts against the abutting section 52. At this time, a movable gap is formed between the limiting portion 13 and the outer wall of the base 1.

[0089] When the rotating assembly 9 drives the plug-in section 51 to unlock in the pedestal 1 for demoulding, the telescopic rod of the third cylinder is moved back and forth multiple times, so that the third cylinder and the elastic member 72 move together toward the limit portion 13 to repeatedly strike the formwork 201, causing the formwork 201 to vibrate, thereby making it easier to separate from the concrete and less likely to stick. The telescopic rod of the third cylinder is then extended and connected to the connecting rod 74, and then retracted to abut against the abutting section 52 through the limit portion 13, driving the plug-in socket 5 to move in the direction of being pulled out of the pedestal 1, thereby separating all the plug-in sockets 5 and the locking assembly 10 on the side form 2 from the pedestal 1, thereby allowing the side form 2 to move downward for demoulding.

[0090] The implementation principle of the demoulding mechanism for a box girder steel mold in an embodiment of the present application is as follows: during demoulding, the telescopic rod of the push-pull power source 8 is extended and connected to the connecting rod 74, and then the rack 93 is pushed by the pusher 94 to rotate the rotating rings 91 on both sides of the pedestal 1 in opposite directions, so that the locking column 102 moves from the peripheral portion 22 of the locking groove 20 to the straight portion 21. Then the telescopic rod of the pushing power source is retracted to drive the plug-in seat 5 to completely detach from the pedestal 1 in the direction away from the pedestal 1. Then the telescopic rod of the telescopic power source 32 is extended upward to abut against the truss 202 of the side mold 2 to support the side mold 2, and then the support member 4 on the side mold 2 is threaded upward to detach from the ground, and then the telescopic rod of the telescopic power source 32 is retracted downward to cause the side mold 2 to detach from the formed box girder under the action of its own gravity for demoulding.

[0091] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A demoulding mechanism for a box beam steel mold, characterized in that: include, Lifting devices (3) are distributed on opposite sides of the pedestal (1), respectively cooperating with the side molds (2) on both sides of the pedestal (1), and are used to drive the corresponding side molds (2) to move along the height or width direction of the pedestal (1); A support member (4) is connected to the bottom of the side mold (2) with upper and lower threads and is used to support the side mold (2); A plurality of plug-in sockets (5) are distributed along the length direction of the side mold (2) and are slidably penetrated on the side mold (2) along the width direction of the base (1), and the plug-in sockets (5) of the side molds (2) on opposite sides of the base (1) correspond one to one; the plug-in sockets (5) include a connected plug-in section (51) and an abutting section (52), and the base (1) is provided with a connecting hole (6) along its own width direction for the plug-in sections (51) of the two opposite plug-in sockets (5) to be inserted together; A connecting assembly (7) is connected to all the sockets (5) on the same side mold (2); A push-pull power source (8) is provided on the side mold (2) and is detachably connected to the connecting assembly (7), and is used to drive the connecting assembly (7) and the plug socket (5) to move toward or away from the pedestal (1) along the width direction of the pedestal (1); A rotating assembly (9) is provided on the side mold (2) and is used to drive the connector (5) on the same side mold (2) to rotate together; and A locking assembly (10) is disposed between the two opposing sockets (5); When the side mold (2) and the pedestal (1) form a casting space, the abutting section (52) of the plug-in seat (5) and the pedestal (1) clamp the side mold (2) together, the plug-in section (51) of the plug-in seat (5) is inserted into the connecting hole (6), and the two opposite plug-in seats (5) rotate in opposite directions so that the two opposite plug-in sections (51) are locked or unlocked by the locking assembly (10).

2. A demoulding mechanism for a box beam steel mold according to claim 1, characterized in that: The lifting device (3) comprises: A base (31) opposite to the side of the pedestal (1); A telescopic power source (32) is provided on the base (31) and is telescopic along the height direction of the pedestal (1); as well as A translational power source (33) is mounted on the base (31) and is connected to the telescopic power source (32) for driving the telescopic power source (32) to move along the width direction of the pedestal (1).

3. The demoulding mechanism for a box beam steel mold according to claim 2, characterized in that: The lifting device (3) is equipped with a movable track (11), the movable track (11) extends along the length direction of the pedestal (1), and the base (31) is rotatably connected to a running wheel (12) that rolls on the movable track (11).

4. The demoulding mechanism for a box beam steel mold according to claim 1, characterized in that: The connecting assembly (7) comprises a guide rod (71), an elastic member (72), a rotating seat (73) and a connecting rod (74); the rotating seat (73) corresponds to the abutting section (52) one by one and is rotatably connected to the connecting rod (74); The guide rod (71) is slidably passed through the abutting section (52) along the width direction of the pedestal (1), and the guide rod (71) is connected to the rotating seat (73) corresponding to the abutting section (52) in a direction away from the abutting section (52), and one end of the guide rod (71) away from the connecting rod (74) passes through the abutting section (52) and is provided with a limiting portion (13), and the limiting portion (13) is used to limit the abutting section (52) from separating from the guide rod (71) in a direction away from the connecting rod (74); The elastic member (72) is connected between the abutting section (52) and the corresponding rotating seat (73), and is used to drive the abutting section (52) and the connecting rod (74) to move in a direction away from each other.

5. The demoulding mechanism for a box beam steel mold according to claim 4, characterized in that: At least two guide rods (71) are provided to cooperate with each abutment section (52).

6. The demoulding mechanism for a box beam steel mold according to claim 4, characterized in that: The push-pull power source (8) is connected to the connecting rod (74) via bolts.

7. The demoulding mechanism for a box beam steel mold according to claim 1, characterized in that: The rotating assembly (9) comprises: A rotating ring (91) corresponds one-to-one with the plug seat (5), is rotatably connected to the outer wall of the side mold (2), has an axial direction parallel to the width direction of the base (1), has a penetration cavity (14) for the plug section (51) to penetrate along the width direction of the base (1), and has teeth distributed along its own circumferential outer wall; A boss (92) is provided on the inner wall of the through cavity (14) of the rotating ring (91); the plug section (51) is provided with a travel groove (15) along the width direction of the pedestal (1) for the boss (92) to slide; The rack (93) slides on the outer wall of the side mold (2) in a direction parallel to the base (1) and simultaneously engages with all the rotating rings (91) on the same side mold (2); The pushing member (94) is connected to the side mold (2) and is respectively opposite to the two ends of the rack (93) that are away from each other, and is used to push the rack (93) to move in a direction parallel to the length of the base (1).

8. A demoulding mechanism for a box beam steel mold according to claim 7, characterized in that A travel rod (16) is connected to the side mold (2), and a travel bar (17) is connected to the rack (93). The travel bar (17) is slidably mounted on the travel rod (16) along the length direction of the pedestal (1), and the travel rod (16) is threadedly connected to a stop member (18) at positions corresponding to the opposite ends of the travel bar (17).

9. The demoulding mechanism for a box beam steel mold according to claim 3, characterized in that: The locking assembly (10) comprises, An insert rod (101) is connected to the end of one of the inserting sections (51) in the two opposite inserting seats (5), and the end of the other inserting section (51) has a slot (19) for inserting the insert rod (101); and A locking column (102) protrudes outward from the outer wall of the insertion rod (101), and the plug section (51) having the slot (19) is provided with a locking groove (20) on the inner wall of the slot (19) for the locking column (102) to slide. The locking groove (20) includes a straight portion (21) and a circumferential portion (22), wherein the straight portion (21) extends along the length direction of the plug-in section (51), and the circumferential portion (22) extends along the circumference of the plug-in section (51), and when the side molds (2) on both sides of the pedestal (1) jointly clamp the pedestal (1), and the abutting section (52) and the pedestal (1) jointly clamp the side mold (2), the locking column (102) can slide from the straight portion (21) into the circumferential portion (22).

10. The demoulding mechanism for a box beam steel mold according to claim 9, characterized in that: The portion of the side mold (2) opposite to the pedestal (1) has a rubber strip (23), and the peripheral portion (22) is inclined in a direction away from the straight portion (21) toward the abutting section (52) close to the same socket (5).

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