Steel mould for hydraulic disassembling and assembling device of linear guide wedge block mechanism

Abstract

The present application relates to precast concrete component forming mold technical field, disclose a kind of steel mould of linear guide wedge-shaped slider mechanism hydraulic disassembly and combination device, including cover mould and bottom mould, both sides of cover mould are equipped with upper tongue-and-groove plate, both sides of bottom mould are equipped with lower tongue-and-groove plate, both sides of upper tongue-and-groove plate and lower tongue-and-groove plate are equipped with two groups of wedge-shaped slider locking mechanism, and two groups of wedge-shaped slider locking mechanism are central symmetry;Each group of wedge-shaped slider locking mechanism includes linear slide rail, wedge-shaped movable slider installed on linear slide rail and L-shaped wedge fixed slider;Wedge-shaped movable slider and corresponding L-shaped wedge fixed slider form inclined wedge self-locking structure by cooperation.The present application is arranged in the center symmetry of two groups of mechanisms, and only a set of driving mechanism can realize the simultaneous wedge of both sides and the simultaneous position of both sides, and the horizontal thrust when wedge is shared by cover mould and bottom mould, and the force of mould closing is more balanced, beneficial to improve mould closing precision and prolong the service life of mould.

Description

Technical Field

[0001] This invention relates to the field of precast concrete component molding mold technology, specifically a steel mold for a hydraulic disassembly and assembly device of a linear guide wedge slider mechanism. Background Technology

[0002] Steel molds have advantages such as high hardness, high strength, high forming precision, and the ability to be repeatedly mass-produced. A steel mold is generally composed of a cover mold and a bottom mold. After the mold is closed, the cover mold and bottom mold must be reliably locked along the parting surface to withstand the expansion force generated during concrete pouring, vibration, and prestressing tensioning. The reliability of the locking mechanism and the ease of assembly and disassembly directly determine the forming quality and production efficiency of the components.

[0003] Existing methods for locking steel molds typically involve manually using a pneumatic wrench to drive screws into the upper and lower molds. In practice, workers need to drive multiple screws one by one along both sides of the mold's tongue and groove to secure the top and bottom molds together. This traditional locking method has the following problems in practical use: First, manual operation is labor-intensive: a steel mold usually requires dozens or even hundreds of screws to be tightened. Workers need to use a pneumatic wrench to tighten the screws one by one. Long hours of repetitive work leads to high physical exertion and hard work for workers. Second, low work efficiency: The process of screwing in each screw one by one takes a long time, which seriously affects the efficiency of mold closing and disassembly, and is not conducive to the cycle time requirements of mass production. Third, poor tightening consistency: manual operation makes it difficult to ensure that the tightening force of each screw is uniform, which can easily lead to some screws becoming loose or too tight, affecting the mold closing accuracy and molding quality. Fourth, demolding is also time-consuming and labor-intensive: demolding requires loosening each screw one by one, which is a complicated process and further reduces the overall production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a steel mold for a hydraulic disassembly and assembly device of a linear guide wedge slider mechanism, which has a simple structure, is easy to operate, has reliable locking, and can quickly achieve mold closing and mold disassembly.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a steel mold for a hydraulic disassembly and assembly device of a linear guide wedge slider mechanism, comprising a cover mold and a bottom mold, wherein upper tongue-and-groove plates are provided on both sides of the cover mold, and lower tongue-and-groove plates are provided on both sides of the bottom mold; two sets of wedge slider locking mechanisms are provided on both sides of the upper and lower tongue-and-groove plates, and the two sets of wedge slider locking mechanisms are arranged symmetrically about the longitudinal axis of the steel mold at 180° rotation; each set of wedge slider locking mechanisms includes a linear guide rail, a wedge movable slider mounted on the linear guide rail, and an L-shaped inclined wedge. The fixed slider has one set of linear slide rails slidably mounted on the upper tongue-and-groove plate on the first side of the cover mold, and its L-shaped wedge fixed slider is fixedly mounted on the lower tongue-and-groove plate on the first side. The other set of linear slide rails slidably mounted on the lower tongue-and-groove plate on the second side of the bottom mold, and its L-shaped wedge fixed slider is fixedly mounted on the upper tongue-and-groove plate on the second side. The wedge-shaped movable slider and its corresponding L-shaped wedge fixed slider cooperate to form a wedge self-locking structure. The wedge tightening direction of the two sets of wedge self-locking structures is the same. It also includes a drive mechanism that drives the two sets of linear slide rails to move synchronously in the same direction.

[0006] A further configuration of the present invention is as follows: a linear slide rail slidably disposed on the first side of the cover mold is guided by a slide rail guide plate fixed to the surface of the upper tongue and groove plate on the first side, and the slide rail guide plate is provided with a wedge-shaped slider reverse pressure plate located above the corresponding wedge-shaped movable slider; a linear slide rail slidably disposed on the second side of the bottom mold is guided by a slide rail guide plate fixed to the surface of the lower tongue and groove plate on the second side, and the slide rail guide plate is provided with a wedge-shaped slider reverse pressure plate located below the corresponding wedge-shaped movable slider.

[0007] A further feature of the present invention is that: the bottom of each group of L-shaped wedge fixing sliders is provided with a wedge slider locking part; the L-shaped wedge fixing slider fixedly mounted on the lower tongue plate is fixedly connected to the lower tongue plate through its wedge slider locking part; the L-shaped wedge fixing slider fixedly mounted on the upper tongue plate is fixedly connected to the upper tongue plate through its wedge slider locking part; and each group of L-shaped wedge fixing sliders is provided with a slider reinforcing plate at the wedge slider locking part.

[0008] A further feature of the present invention is that the surfaces of the upper tongue and the lower tongue are provided with positioning holes, and positioning pins are inserted between two adjacent positioning holes.

[0009] A further feature of the present invention is that: each set of linear slide rails has multiple mounting holes on its surface, each set of wedge-shaped movable sliders has a fastening screw hole in its middle, and a fastening screw is installed between the corresponding mounting hole and the fastening screw hole.

[0010] A further feature of the present invention is that each set of wedge-shaped movable sliders is provided with a wedge-shaped slider assembly surface, and each set of L-shaped wedge fixed sliders is provided with a self-locking wedge surface. The inclination angle between the corresponding self-locking wedge surface and the wedge-shaped slider assembly surface is the same, and the inclination angle is less than the friction self-locking angle between the self-locking wedge surface and the wedge-shaped slider assembly surface.

[0011] A further feature of the present invention is that it includes two sets of guide rail retraction gear rack assemblies. Each set of guide rail retraction gear rack assemblies includes a front mounting plate and a rear mounting plate. The front mounting plate and the rear mounting plate, which correspond to the linear slide rail on the first side of the cover mold, are fixedly mounted on the surface of the upper tongue-and-groove plate on the first side. The front mounting plate and the rear mounting plate, which correspond to the linear slide rail on the second side of the bottom mold, are fixedly mounted on the surface of the lower tongue-and-groove plate on the second side. A mounting shaft is rotatably mounted between the front mounting plate and the rear mounting plate on the same side. A retraction gear is fixedly mounted in the middle of the mounting shaft. Each set of linear slide rails is provided with a retraction tooth groove that meshes with the retraction gear.

[0012] A further feature of the present invention is that the driving mechanism includes a synchronous beam, and two sets of linear slide rails are rigidly connected by the synchronous beam. A hydraulic jack pushes the synchronous beam to drive the two sets of linear slide rails to move synchronously in the same direction.

[0013] A further feature of the present invention is that a linear slide rail slidably disposed on one side of the cover mold and on the cover mold, and a linear slide rail slidably disposed on the other side of the bottom mold and on the bottom mold are respectively provided with positioning grooves. After the linear slide rail moves to the wedge clamping position, the two sets of positioning grooves correspond to each other and are limited by positioning pins.

[0014] A further feature of the present invention is that the surface of the linear slide rail is provided with a hydraulic jack pressure support, the hydraulic jack pressure support comprising a support plate and a support reinforcing rib plate fixed to each other, the support plate and the support reinforcing rib plate being fixedly disposed on the surface of the linear slide rail.

[0015] In summary, the present invention has the following beneficial effects: First, the two sets of wedge-shaped slider locking mechanisms of the present invention are arranged in a centrally symmetrical manner, and the wedge tightening direction of the two sets of inclined wedge self-locking structures is the same. Only one set of driving mechanism is needed to realize the synchronous movement of the two sets of linear slide rails in the same direction. The simultaneous wedge tightening or simultaneous retraction of both sides can be completed in one operation. Since the geometric elements are simultaneously interchanged up and down and left and right when rotated 180° around the longitudinal axis of the mold, while the front and rear orientation along the length direction remains unchanged, the wedge tightening direction of the two sets of inclined wedges is consistent. The hydraulic jack can drive in the same direction to lock both sides synchronously. While obtaining the diagonal balanced pressing effect, no additional operation steps are added, and the high efficiency of the original device is maintained. Secondly, the two sets of linear slide rails of the present invention are respectively slidably arranged on one side of the cover mold and the other side of the bottom mold. When wedging, the horizontal thrust generated along the length of the mold is no longer concentrated on a single mold body, but is shared by the cover mold and the bottom mold. The horizontal reaction force of one set of linear slide rails is transmitted to the cover mold, and the horizontal reaction force of the other set of linear slide rails is transmitted to the bottom mold. This significantly reduces the stress deformation of a single mold body, especially the cover mold, in the length direction, effectively reducing the stress concentration of the upper and lower tongue and groove plates, which is beneficial to improving the mold closing accuracy and extending the service life of the tongue and groove plates and the mold body. Third, the two sets of wedge-shaped slider locking mechanisms of the present invention apply opposing clamping forces to the mold from the cover mold side and the bottom mold side respectively, so that the upper mold and the lower mold are pressed together at the same time, the mold closing force is more balanced and the locking is more reliable; one set presses the cover mold to the bottom mold through the self-locking inclined wedge surface via the linear slide rail, and the other set presses the bottom mold to the cover mold via the linear slide rail. The clamping forces on both sides act symmetrically on the parting surface, which effectively suppresses the micro-opening and local misalignment of the parting surface during concrete vibration and prestressing tensioning, and ensures the forming quality of the component; Fourth, the tilt angle of the wedge pair in this invention is smaller than its friction self-locking angle. Even if the hydraulic system is unloaded after locking, it will not loosen on its own, significantly improving safety. Both the wedge slider assembly surface and the self-locking wedge surface are precision-machined surfaces, and the tilt angle is smaller than the friction self-locking angle of the friction pair. Therefore, the wedge pair remains self-locked without external force, avoiding accidental loosening due to hydraulic pipeline leakage or unloading. Combined with the mechanical locking of the positioning pin, it forms a double insurance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the side structure of the cover mold of the present invention; Figure 3 This is a schematic diagram of the side structure of the bottom mold of the present invention; Figure 4 This is one of the structural schematic diagrams of the wedge-shaped slider locking mechanism of the present invention; Figure 5 This is the second schematic diagram of the wedge-shaped slider locking mechanism of the present invention; Figure 6 This is a schematic diagram of the upper tongue and groove plate and the lower tongue and groove plate of the present invention; Figure 7 This is one of the structural schematic diagrams of the linear guide rail of the present invention; Figure 8 This is one of the structural schematic diagrams of the wedge-shaped movable slider of the present invention; Figure 9 This is the second schematic diagram of the wedge-shaped movable slider of the present invention; Figure 10 This is the third schematic diagram of the wedge-shaped movable slider of the present invention; Figure 11 This is one of the structural schematic diagrams of the L-shaped wedge fixing slider of the present invention; Figure 12 This is the second schematic diagram of the structure of the L-shaped wedge fixing slider of the present invention; Figure 13 This is a schematic diagram of the structure of the slider reinforcement plate of the present invention; Figure 14 This is a schematic diagram of the slide rail guide plate of the present invention; Figure 15 This is a schematic diagram of the positioning pin structure of the present invention; Figure 16 This is the second schematic diagram of the linear guide rail of the present invention; Figure 17 This is a schematic diagram of the guide rail retraction gear rack assembly of the present invention; Figure 18 This is a schematic diagram of the structure of the front mounting plate of the present invention; Figure 19 This is a schematic diagram of the structure of the rear mounting plate of the present invention; Figure 20 This is a schematic diagram of the structure for mounting the shaft of the present invention; Figure 21 This is a schematic diagram of the retraction gear of the present invention; Figure 22 This is one of the structural schematic diagrams of the hydraulic jack pressure support of the present invention; Figure 23 This is the second schematic diagram of the hydraulic jack pressure support of the present invention.

[0017] In the diagram: 1. Cover mold; 101. Upper tongue and groove plate; 2. Bottom mold; 201. Lower tongue and groove plate; 3. Positioning pin; 4. Linear slide rail; 401. Mounting hole; 402. Retraction groove; 5. Wedge-shaped movable slider; 501. Fastening screw hole; 502. Wedge-shaped slider assembly surface; 6. Fastening screw; 7. L-shaped wedge fixed slider; 1301. Wedge slider locking part; 702. Self-locking wedge surface; 8. Slider reinforcing plate; 9. Slide rail guide plate; 10. Wedge-shaped slider reverse pressure plate; 11. Positioning pin; 12. Guide rail retraction gear rack assembly; 1201. Front mounting plate; 1202. Rear mounting plate; 1203. Mounting shaft; 1204. Retraction gear; 13. Hydraulic jack pressure support; 1301. Support plate; 1302. Support reinforcing rib plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] Example 1 Please see Figures 1-23The steel mold of the hydraulic disassembly and assembly device of the linear guide wedge slider mechanism provided in this embodiment includes a cover mold 1 and a bottom mold 2. The cover mold 1 and the bottom mold 2 are aligned vertically, and their mating surfaces constitute the parting surface of the steel mold.

[0020] The cover mold 1 has upper tongue and groove plates 101 on both sides along its length, and the bottom mold 2 has lower tongue and groove plates 201 on both sides along its length. The upper tongue and groove plates 101 and 201 correspond one-to-one, and both have positioning holes machined on their surfaces. The two adjacent positioning holes are coaxially arranged. When the molds are closed, a positioning pin 3 is inserted between the two adjacent positioning holes. The initial positioning of the cover mold 1 and the bottom mold 2 during the mold closing process is achieved through the cooperation of the positioning pin 3 and the positioning hole, which prevents the upper and lower molds from being misaligned in the length and width directions and provides an accurate reference for subsequent wedging.

[0021] The steel mold has two sets of wedge-shaped slider locking mechanisms on both sides. These two sets of wedge-shaped slider locking mechanisms are arranged 180° rotationally symmetrically around the longitudinal axis of the steel mold (i.e., the axis extending along the length of the mold), that is, centrally symmetrically. Specifically: One set of wedge-shaped slider locking mechanisms is set on the first side of the steel mold, and its linear slide rail 4 is slidably set on the upper tongue plate 101 on the same side of the cover mold 1, and its L-shaped inclined wedge fixing slider 7 is fixedly set on the lower tongue plate 201 on the same side of the bottom mold 2. Another set of wedge-shaped slider locking mechanisms is set on the second side of the steel mold. Its linear slide rail 4 is slidably set on the lower tongue plate 201 on the same side of the bottom mold 2, and its L-shaped inclined wedge fixing slider 7 is fixedly set on the upper tongue plate 101 on the same side of the cover mold 1.

[0022] When the geometric elements are rotated 180° around the longitudinal axis, they simultaneously undergo "up-down interchange" and "left-right interchange," while the front-back orientation along the length of the mold remains unchanged. Therefore, the wedging directions of the two sets of wedges are the same: when the two sets of linear slide rails 4 move synchronously in the same direction, the two sets of wedge-shaped slider combination surfaces 502 simultaneously wedge into their respective corresponding self-locking wedge surfaces 702, achieving simultaneous locking on both sides; when moving in the opposite direction, the two sets simultaneously retract.

[0023] Each set of wedge slider locking mechanisms includes a linear slide rail 4, a wedge movable slider 5 mounted on the linear slide rail 4, and an L-shaped inclined wedge fixed slider 7.

[0024] The linear guide rail 4 is a long strip-shaped component extending along the length of the mold. Each set of linear guide rails 4 has multiple mounting holes 401 machined at intervals along its length for mounting the wedge-shaped movable slider 5 and adjusting its position along the length.

[0025] On the outer surface of the tongue and groove plate 101 on one side of the cover mold 1, a slide rail guide plate 9 is fixedly installed by bolts. A guide channel extending along the length of the mold is formed between the slide rail guide plate 9 and the surface of the tongue and groove plate 101 on this side. The linear slide rail 4, which is slidably disposed on one side of the cover mold 1, is guided by the slide rail guide plate 9. On the outer surface of the lower tongue and groove plate 201 on the other side of the bottom mold 2, a slide rail guide plate 9 is also fixedly installed. The linear slide rail 4, which is slidably disposed on one side of the bottom mold 2, is guided by the slide rail guide plate 9.

[0026] The slide rail guide plate 9 is equipped with a wedge-shaped slider reverse pressure plate 10. Since the two sets of mechanisms are arranged symmetrically at the center, the two sets of wedge-shaped slider reverse pressure plates 10 are positioned in opposite directions relative to their respective wedge-shaped movable sliders 5. The linear slide rail 4, which is slidably set on one side of the cover mold 1, has a wedge-shaped slider reverse pressure plate 10 on its slide rail guide plate 9 located above the corresponding wedge-shaped movable slider 5. A linear slide rail 4 is slidably set on the other side of the bottom mold 2, and the wedge-shaped slider reverse pressure plate 10 on the slide rail guide plate 9 is located below the corresponding wedge-shaped movable slider 5.

[0027] The wedge-shaped slider reverse pressure plate 10 and its corresponding self-locking wedge surface 702 are located on the same side of the wedge-shaped movable slider 5. The two work together to limit the wedge-shaped movable slider 5 between the linear slide rail 4 and the wedge-shaped slider reverse pressure plate 10. This restricts the displacement and flipping tendency of the wedge-shaped movable slider 5 along the sliding direction perpendicular to the linear slide rail 4 during the wedging and retraction process, ensuring that the wedge-shaped movable slider 5 always keeps in contact with the linear slide rail 4 and does not come off or deviate.

[0028] Each set of wedge-shaped movable sliders 5 has a fastening screw hole 501 machined in the middle. A fastening screw 6 is installed between the corresponding mounting hole 401 and the fastening screw hole 501. The fastening screw 6 passes through the mounting hole 401 on the linear slide rail 4 and is screwed into the fastening screw hole 501 of the wedge-shaped movable slider 5, thereby detachably fixing the wedge-shaped movable slider 5 onto the linear slide rail 4. Since the linear slide rail 4 has multiple mounting holes 401, the installation position of the wedge-shaped movable slider 5 can be adjusted along the length of the linear slide rail 4 to accommodate molds of different specifications, and can be compensated for by adjusting the installation position after the wedge surface has worn down over a long period of use.

[0029] Each set of wedge-shaped movable sliders 5 is provided with a wedge-shaped slider assembly surface 502. Among them, the wedge-shaped movable slider 5 on the cover mold 1 side has its wedge-shaped slider assembly surface 502 located on the side of the slider facing the L-shaped wedge fixed slider 7 on the same side; the wedge-shaped movable slider 5 on the bottom mold 2 side also has its wedge-shaped slider assembly surface 502 located on the side facing the L-shaped wedge fixed slider 7 on the same side, and the two are oriented in opposite directions due to central symmetry.

[0030] Each set of L-shaped wedge fixed sliders 7 is L-shaped, with its vertical part forming the wedge slider locking part 1301, and its horizontal part extending to one side of the corresponding wedge movable slider 5 and forming a self-locking wedge surface 702.

[0031] The L-shaped wedge fixing slider 7 is fixedly installed on the lower tongue and groove plate 201 and is fixedly connected to the lower tongue and groove plate 201 through the wedge slider locking part 1301 at its bottom; the L-shaped wedge fixing slider 7 is fixedly installed on the upper tongue and groove plate 101 and is fixedly connected to the upper tongue and groove plate 101 through the wedge slider locking part 1301 at its bottom. The fixing connection method adopts high-strength bolt connection, and a slider reinforcing plate 8 is provided at the wedge slider locking part 1301 of each group of L-shaped wedge fixing sliders 7. The slider reinforcing plate 8 is attached to the surface of the corresponding tongue and groove plate to increase the force-bearing area of ​​the locking part, disperse the wedge tightening reaction force, and prevent the tongue and groove plate from undergoing local deformation or cracking during repeated locking.

[0032] Each set of wedge-shaped movable sliders 5 has a wedge-shaped slider assembly surface 502 that mates with its corresponding L-shaped wedge fixed slider 7 to form a wedge self-locking structure. The self-locking wedge surface 702 and its corresponding wedge-shaped slider assembly surface 502 have the same inclination angle α, and this inclination angle α is less than the friction self-locking angle ρ (ρ=arctan μ, μ is the friction coefficient between the two contact surfaces) between the self-locking wedge surface 702 and the wedge-shaped slider assembly surface 502.

[0033] In this embodiment, both the wedge-shaped slider assembly surface 502 and the self-locking wedge surface 702 are precision-machined steel surfaces, and their tilt angle α is preferably 5° to 8° (7° in this embodiment), which is smaller than the friction self-locking angle of the friction pair. Therefore, after wedging, the wedge pair will not loosen on its own without external force, and even if the hydraulic system is unloaded, the mold remains reliably locked, significantly improving the safety of use.

[0034] In this embodiment, the driving mechanism includes a synchronous beam and a hydraulic jack. The synchronous beam spans the width of the steel mold and is located at one end of the steel mold. Its two ends are respectively connected to the ends of two sets of linear slide rails 4, thereby rigidly connecting the two sets of linear slide rails 4 into one unit. In order to ensure that the cover mold 1 can be freely lifted off when the mold is closed and opened, at least one end of the synchronous beam is detachably connected to the corresponding linear slide rail 4 (such as pin connection or bolt connection). Before demolding, the detachable end is first disassembled. The remaining connection ends can be connected by hinges or elongated holes to absorb the small height difference between the two sets of linear slide rails 4 caused by the gap of the parting surface.

[0035] The hydraulic jacks are arranged along the length of the mold, with one end connected to the synchronous beam and the other end supported on the jack reaction seat set on the mold. The hydraulic jacks are supplied with oil by a hydraulic pump station. When the piston rod of the hydraulic jack extends, it pushes the synchronous beam to move along the length of the mold, thereby driving the two sets of linear slide rails 4 to move synchronously in the same direction; when the piston rod returns, it pulls the two sets of linear slide rails 4 to retract synchronously in the opposite direction.

[0036] In this embodiment, each set of linear guide rails 4 is fixedly provided with a hydraulic jack pressure support 13, which is used to install a small hydraulic jack to assist in pushing the linear guide rail 4 to move when the steel mold is long, and to prevent the linear guide rail 4 from being deformed by pressure. The hydraulic jack pressure support 13 includes a support plate 1301 and a support reinforcing rib plate 1302. The support plate 1301 is vertically fixed (by welding or bolting) to the surface of the linear guide rail 4, and its plate surface forms a bearing surface to withstand the pushing of the piston rod of the small hydraulic jack; the support reinforcing rib plate 1302 has a triangular (or trapezoidal) structure, with one side fixedly connected to the back of the support plate 1301 and the other side fixedly connected to the surface of the linear guide rail 4, thereby forming a triangular reinforcing structure between the support plate 1301 and the linear guide rail 4. Multiple hydraulic jack pressure supports 13 can be arranged at intervals along the length direction of the linear guide rail 4.

[0037] Because the linear guide rail 4 is a slender rod, when the steel mold is long, if it is pushed only by the hydraulic main jack at the end, the entire length of the guide rail will bear axial pressure. This results in a large slenderness ratio, making it prone to buckling deformation under pressure, leading to transmission jamming or even failure. To address this, small hydraulic jacks are installed at intervals on the support plates 1301 on the surface of the linear guide rail 4. The piston rods of these small hydraulic jacks push against the bearing surface of the support plates 1301, and the small hydraulic jacks and the main hydraulic jack are supplied with oil and pressurized synchronously by the same hydraulic pump station. This divides the continuous pressure-bearing section of the long guide rail into several short sections, significantly reducing the effective pressure-bearing length and slenderness ratio of the linear guide rail 4, fundamentally preventing pressure deformation during the pushing process. The support reinforcing ribs 1302 evenly distribute the concentrated thrust of the jacks to the body of the linear guide rail 4, preventing localized crushing of the guide rail. When the steel mold is relatively short and the guide rail has sufficient rigidity, the auxiliary small hydraulic jacks can be omitted, and the linear guide rail 4 can be moved by the main hydraulic jacks alone.

[0038] Each group is equipped with a guide rail retraction gear rack assembly 12, which includes a front mounting plate 1201, a rear mounting plate 1202, a mounting shaft 1203, and a retraction gear 1204.

[0039] The front mounting plate 1201 and the rear mounting plate 1202, corresponding to the linear slide rail 4 on one side of the cover mold 1, are fixedly mounted on the surface of the upper tongue-and-groove plate 101 on that side; the front mounting plate 1201 and the rear mounting plate 1202, corresponding to the linear slide rail 4 on the other side of the bottom mold 2, are fixedly mounted on the surface of the lower tongue-and-groove plate 201 on that side. The front mounting plate 1201 and the rear mounting plate 1202 are arranged at intervals along the width direction of the mold, and a mounting shaft 1203 is rotatably mounted between them. A retraction gear 1204 is fixedly mounted in the middle of the mounting shaft 1203.

[0040] Each set of linear slide rails 4 has a retraction groove 402 machined along its length. The retraction groove 402 meshes with its corresponding retraction gear 1204, forming a gear and rack pair. This gear and rack pair guides the sliding of the linear slide rail 4, ensuring that the linear slide rail 4 moves smoothly in the predetermined direction. On the other hand, during retraction, rotating the mounting shaft 1203 causes the retraction gear 1204 to drive the linear slide rail 4 out of the wedge-tight position. Especially when the hydraulic jack is unloading or the wedge pair is seized due to excessive load, the gear and rack pair can be used to apply mechanical retraction force, making the retraction operation labor-saving and reliable.

[0041] Positioning grooves are provided on the linear slide rail 4 slidably mounted on one side of the cover mold 1 and on the cover mold 1, and on the linear slide rail 4 slidably mounted on the other side of the bottom mold 2 and on the bottom mold 2. After the linear slide rail 4 moves to the wedge-tightening position, the two sets of positioning grooves are aligned and limited by the positioning pins 11 inserted into the positioning grooves, thereby mechanically locking the linear slide rail 4 in the wedge-tightening position and preventing it from loosening due to vibration during concrete pouring, vibration and prestressing tensioning.

[0042] Workers used a gantry crane to lift the bottom formwork 2 to the assembly station and place it stably; then the steel cage was placed into the bottom formwork 2, the tensioning oil pump was started, the tensioning rod was aligned with the tensioning hanging plate and rotated to fasten it, the steel cage was prestressed and pre-tensioned, and the position and prestress state of the steel cage were adjusted. The mold closing operation is divided into two workflows depending on the feeding method; The first method is the mold opening and feeding method, which adopts the method of feeding first and then tensioning. The workers first feed the molding material into the mold cavity of the bottom mold 2, and then clean up the cement residue or other debris that has fallen on the surface of the upper tongue and groove plate 101 and the lower tongue and groove plate 201. The hydraulic pump of the jack is started to unload and retract the tension, so that there is a gap larger than the length of the mold between the tensioning support foot and the mold tensioning support plate. The workers use the overhead crane to lift the cover mold 1 to the assembly station, smoothly align the cover mold 1 and align it with the mold closing hole of the bottom mold 2 to close the mold. After the upper and lower molds are closed, the overhead crane is unhooked and leaves the assembly station. The second method is the pump feeding method, which adopts the method of tensioning first and then feeding. The staff directly starts the oil pump to unload and retract the tension, so that there is a gap between the tensioning support foot and the tensioning support plate of the mold that is larger than the length of the mold. The staff uses a gantry crane to lift the cover mold 1 to the assembly station for mold closing. After the upper and lower molds are closed, the gantry crane is unhooked and leaves the assembly station. After the mold is closed, the tensioning and locking process begins. The operator starts the hydraulic pump of the jack to deliver oil, and the jack pushes the linear slide rail 4 to move along the direction of the slide rail guide plate 9. The wedge-shaped movable slider 5 on the linear slide rail 4 moves synchronously with the linear slide rail 4 under the pressure of the jack. The wedge-shaped slider assembly surface 502 gradually contacts and fits with the self-locking wedge surface 702 of the L-shaped wedge fixed slider 7. As the jack continues to apply pressure, the wedge-shaped movable slider 5 gradually presses the cover mold 1 and the bottom mold 2 tightly. The operator observes the tensioning support foot. When the tensioning support foot slowly presses the tensioning end flange plates of the cover mold 1 and the bottom mold 2 to a flush state, it indicates that the mold has reached the locking state. At this time, the oil delivery is stopped, the oil pump is turned off, and the tensioning jack is kept in a pressure-holding state. Subsequently, the staff inserted the positioning pins 11 into the reserved positioning slots on the linear slide rail 4 on both sides of the tongue and groove to limit and fix the linear slide rail 4; after the positioning pins 11 were installed, the jack oil pump was started to perform prestressing tensioning of the steel cage and apply stress according to the design parameters; after the oil gauge pointer reached the specified requirements, the upper and lower fixing plates were used to lock the tensioning hanging plate (or the nut locking method could be used), and after locking, the oil pump was unloaded, and the steel stress was applied to the steel mold body through the hanging plate at both ends. At the same time, the wedge-shaped slider mechanism of the upper and lower molds was used to continuously press the mold to keep the upper and lower end panels flush and locked. After the product is formed, the overhead crane operator lifts the formed mold to the demolding area. The operator selects the appropriate tools according to different products to unstress the prestressed steel bars. After unstressing, the stress of all steel bars is transferred to the concrete product body. The worker uses a hammer to knock out the positioning pins 11 on the slot, so that the locking between the cover mold 1 and the bottom mold 2 is released. Then, the worker uses a tool to rotate the mounting shaft 1203 in the opposite direction, so that the retraction gear 1204 rotates in the opposite direction. The meshing between the retraction gear 1204 and the retraction groove 402 on the linear slide rail 4 causes the linear slide rail 4 to retract, so that the linear slide rail 4 is retracted to a position that is offset from the L-shaped wedge fixing slider 7 of the bottom mold 2. Finally, the overhead crane operator uses the overhead crane to lift the cover mold 1 open, and the demolding is completed. In this embodiment, the principle of the wedge self-locking is as follows: When the jack pushes the linear slide rail 4 to move towards the bottom mold 2, the wedge-shaped movable slider 5 installed on the linear slide rail 4 moves accordingly, and the wedge-shaped slider assembly surface 502 gradually fits into the self-locking wedge surface 702 of the L-shaped wedge fixed slider 7; as the jack continues to apply pressure, the normal pressure between the two inclined surfaces increases continuously, and the resulting friction is sufficient to prevent the wedge-shaped movable slider 5 from retracting in the opposite direction, thereby achieving mechanical self-locking; the positioning pin 11 further limits the linear slide rail 4, forming a double locking guarantee.

[0043] Example 2 The difference between this embodiment and Embodiment 1 lies in the specific form of the driving mechanism.

[0044] In this embodiment, the mounting shafts 1203 of the two sets of guide rail retraction gear rack assemblies 12 are coaxially arranged and connected into a single rotating shaft via a coupling or universal joint. The rotating shaft is driven to rotate in both directions by a hydraulic jack via the rack pair or by a hydraulic motor. Since the two retraction gears 1204 are fixedly mounted on the same rotating shaft, the two retraction gears 1204 rotate in the same direction when the shaft rotates, and the two retraction gears 1204 mesh with the retraction grooves 402 on the two sets of linear slide rails 4 respectively. Therefore, the two sets of linear slide rails 4 are driven to move synchronously in the same direction, realizing simultaneous wedging and retraction on both sides.

[0045] Since the front mounting plate 1201 and the rear mounting plate 1202 of the two sets of guide rail retraction gear rack assemblies 12 are fixedly installed on the surfaces of the upper tongue plate 101 and the lower tongue plate 201 respectively, and there is a height difference between them, the overall rotating shaft is set in segments, and the adjacent segments are connected by universal joints to compensate for the installation height difference and the small displacement during the mold closing process.

[0046] In this embodiment, no synchronous beam is provided, and there is no rigid connection between the two sets of linear slide rails 4. Therefore, no connecting parts need to be disassembled when opening the mold, and the gantry crane can directly lift the cover mold 1. The rest of the structure in this embodiment is the same as in embodiment one, and will not be described again here.

[0047] Example 3 The difference between this embodiment and Embodiment 1 is that the driving mechanism includes two hydraulic jacks, which are arranged in the same direction along the length of the mold. Their piston rods are respectively connected to the ends of the two sets of linear slide rails 4. The two hydraulic jacks are supplied with oil synchronously by the same hydraulic pump station through a synchronous valve or a synchronous diverter valve, so that the two sets of linear slide rails 4 move synchronously in the same direction under the action of thrust.

[0048] In this embodiment, there is no rigid connection between the two sets of linear slide rails 4, so there is no need to disassemble the connecting parts when opening the mold. The rest of the structure in this embodiment is the same as in Embodiment 1, and will not be described again here.

[0049] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A steel mold for a hydraulic disassembly and assembly device of a linear guide wedge slider mechanism, comprising a cover mold (1) and a bottom mold (2), wherein the cover mold (1) is provided with upper tongue and groove plates (101) on both sides, and the bottom mold (2) is provided with lower tongue and groove plates (201) on both sides, characterized in that: Two sets of wedge-shaped slider locking mechanisms are provided on both sides of the upper tongue-and-groove plate (101) and the lower tongue-and-groove plate (201). The two sets of wedge-shaped slider locking mechanisms are arranged symmetrically about the longitudinal axis of the steel mold at 180°. Each set of wedge-shaped slider locking mechanisms includes a linear slide rail (4), a wedge-shaped movable slider (5) installed on the linear slide rail (4), and an L-shaped inclined wedge fixed slider (7). The linear slide rail (4) of one set is slidably set on the upper tongue-and-groove plate (101) on the first side of the cover mold (1), and its L-shaped inclined wedge fixed slider (7) is fixed. The bottom mold (2) is fixedly set on the lower tongue plate (201) on the first side, and the other set of linear slide rails (4) is slidably set on the lower tongue plate (201) on the second side of the bottom mold (2). The L-shaped wedge fixing slider (7) is fixedly set on the upper tongue plate (101) on the second side. The wedge movable slider (5) and its corresponding L-shaped wedge fixing slider (7) cooperate to form a wedge self-locking structure. The wedge tightening direction of the two sets of wedge self-locking structures is the same. It also includes a driving mechanism that drives the two sets of linear slide rails (4) to move synchronously in the same direction.

2. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: The linear slide rail (4) slidably disposed on the first side of the cover mold (1) is guided by the slide rail guide plate (9) fixed to the surface of the upper tongue and groove plate (101) on the first side. The slide rail guide plate (9) is provided with a wedge-shaped slider reverse pressure plate (10) located above the corresponding wedge-shaped movable slider (5). The linear slide rail (4) slidably disposed on the second side of the bottom mold (2) is guided by the slide rail guide plate (9) fixed to the surface of the lower tongue and groove plate (201) on the second side. The slide rail guide plate (9) is provided with a wedge-shaped slider reverse pressure plate (10) located below the corresponding wedge-shaped movable slider (5).

3. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: Each set of L-shaped wedge fixing sliders (7) has a wedge slider locking part (1301) at the bottom. The L-shaped wedge fixing sliders (7) fixed on the lower tongue plate (201) are fixedly connected to the lower tongue plate (201) through their wedge slider locking parts (1301). The L-shaped wedge fixing sliders (7) fixed on the upper tongue plate (101) are fixedly connected to the upper tongue plate (101) through their wedge slider locking parts (1301). Each set of L-shaped wedge fixing sliders (7) is equipped with a slider reinforcing plate (8) at the wedge slider locking part (1301).

4. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: The surfaces of the upper tongue-and-groove plate (101) and the lower tongue-and-groove plate (201) are provided with positioning holes, and positioning pins (3) are inserted between two adjacent positioning holes.

5. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: Each set of linear slide rails (4) has multiple mounting holes (401) on its surface, and each set of wedge-shaped movable sliders (5) has a fastening screw hole (501) in the middle. A fastening screw (6) is installed between the corresponding mounting hole (401) and the fastening screw hole (501).

6. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: Each set of wedge movable sliders (5) is provided with a wedge slider combination surface (502), and each set of L-shaped wedge fixed sliders (7) is provided with a self-locking wedge surface (702). The inclination angle between the corresponding self-locking wedge surface (702) and the wedge slider combination surface (502) is the same, and the inclination angle is less than the friction self-locking angle between the self-locking wedge surface (702) and the wedge slider combination surface (502).

7. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: It also includes two sets of guide rail retraction gear rack assemblies (12). Each set of guide rail retraction gear rack assemblies (12) includes a front mounting plate (1201) and a rear mounting plate (1202). The front mounting plate (1201) and the rear mounting plate (1202) corresponding to the first side linear slide rail (4) of the cover mold (1) are fixedly installed on the surface of the upper tongue and groove plate (101) on the first side. The front mounting plate (1201) and the rear mounting plate (1202) corresponding to the second side linear slide rail (4) of the bottom mold (2) are fixedly installed on the surface of the lower tongue and groove plate (201) on the second side. An mounting shaft (1203) is rotatably installed between the front mounting plate (1201) and the rear mounting plate (1202) on the same side. A retraction gear (1204) is fixedly installed in the middle of the mounting shaft (1203). Each set of linear slide rails (4) is provided with a retraction groove (402) that meshes with the retraction gear (1204).

8. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: The driving mechanism includes a synchronous beam, and two sets of linear slide rails (4) are rigidly connected by the synchronous beam. The synchronous beam is driven by a hydraulic jack to drive the two sets of linear slide rails (4) to move synchronously in the same direction.

9. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: Positioning grooves are provided on the linear slide rail (4) on one side of the cover mold (1) and on the cover mold (1), and on the linear slide rail (4) on the other side of the bottom mold (2). After the linear slide rail (4) moves to the wedge clamping position, the two sets of positioning grooves correspond to each other and are limited by positioning pins (11).

10. The steel mold of the hydraulic disassembly and assembly device for the linear guide wedge slider mechanism according to claim 1, characterized in that: The surface of the linear slide rail (4) is also provided with a hydraulic jack pressure support (13). The hydraulic jack pressure support (13) includes a support plate (1301) and a support reinforcing rib plate (1302) that are fixed to each other. The support plate (1301) and the support reinforcing rib plate (1302) are fixedly arranged on the surface of the linear slide rail (4).

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