Concrete prefabricated part pouring mold for fabricated small and medium-sized culvert gates

Abstract

The invention relates to the technical field of concrete prefabricated part pouring forming, in particular to a concrete prefabricated part pouring mold for an assembly type small and medium-sized culvert gate. Comprising a bottom plate, a formwork, an end sealing part, a lateral sealing part and a balance abutting part. According to the invention, a double-template multi-point abutting and pressing fixing mode is adopted, so that the mold structure is simplified, the fixing mode is optimized, and the mold closing and removing time is greatly shortened; by means of the mold closing process of the double mold plates, opposite abutting of the ends of the mold plates is automatically achieved, and lateral abutting and downward pressing of the mold plates are automatically achieved by means of the process that the mold plates obtained after mold closing are subjected to front-back limiting and fixing; the upper end of the die plate is oppositely abutted and pressed down by the aid of the balance abutting part, stress point positions of the die are increased, vertical stress of the die is balanced, comprehensive, stable and uniform fixation is realized, tight die joints are guaranteed, and the automation degree of die closing and fixing processes is high.

Description

Technical Field

[0001] The invention relates to the technical field of concrete precast part casting and molding, in particular to a concrete precast part casting mold for assembled small and medium-sized culverts. Background Art

[0002] As a new type of construction method, prefabricated small and medium-sized culverts (hereinafter referred to as culverts) have received extensive attention and application in farmland water conservancy projects due to their advantages such as short construction period, reliable quality and environmental protection. Culverts can be divided into components such as base plates, wing walls, retaining walls, platforms, gates, etc. The prefabricated concrete parts in culverts (such as wing walls) are usually produced by mold casting. This production method can ensure the dimensional accuracy, surface quality and structural strength of the prefabricated parts, while meeting the needs of mass production.

[0003] At present, the casting mold is basically assembled by splicing multiple mold plates. The mold plates are mostly fixed with bolts or rivets and the total number is large. The mold closing and demolding process is relatively complicated, and the time spent on mold closing and demolding accounts for a large proportion of the entire casting and molding period. Secondly, the mold closing tightness and stability achieved only by fixing structures such as bolts need to be improved, and the joints of multiple mold plates may be uneven, which is prone to leakage or dimensional deviation, affecting the quality of prefabricated parts.

[0004] There are also prefabricated molds in the prior art that are designed to solve the problem of using a large number of fixing structures such as bolts. For example, a Chinese invention patent with publication number CN219190635U discloses an prefabricated concrete structure casting mold, in which the assembled assembly templates are connected in series through assembly columns, and the assembly templates are divided into two integral surfaces on the left and right, thereby reducing the number of bolts and rivets used in the template splicing process and reducing the workload of mold assembly and splicing. When demolding the concrete component, the construction personnel operate the assembly head at the top of the assembly column to disengage the assembly groove to separate the series-connected mold plates for left and right demolding.

[0005] However, when the above-mentioned assembly template is in the mold closing state, it only maintains the front-to-back docking and the upper and lower series docking, and is not subjected to the action of relative pressing and downward pressure. The overall fixing effect and stability need to be improved. It is easy to have problems such as loose fixation or uneven force, and the template is prone to micro-movement or deformation during the pouring process, which in turn affects the quality of the prefabricated parts.

[0006] Therefore, it is necessary to provide a casting mold for prefabricated concrete parts for assembled small and medium-sized culverts, aiming to solve the problems of complicated mold closing and demolding processes and a large proportion of time spent, low mold closing accuracy, tightness and stability, and uneven joints between multiple mold plates, which may lead to leakage and dimensional deviation. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a casting mold for prefabricated concrete parts for assembled small and medium-sized culverts, including: a bottom plate and two U-shaped templates with front and rear limited sliding settings on its upper ends, a horizontal longitudinal groove that slides with the bottom end of the template is opened on the upper end of the bottom plate, the template consists of a side plate and two end plates, the end plates are welded and installed on the ends of the side plates, an extension plate is welded and installed on the side away from the end plate, the extension plate is perpendicular to the end plate, and reinforcing rib plates are welded and installed on the opposite sides of the side plates and the opposite sides of the two end plates corresponding to the same side plate.

[0008] The casting mold also includes an end sealing portion for adaptively applying end opposing clamping forces when the mold is fully closed, a lateral sealing portion for adaptively applying opposing clamping forces and downward pressure to the lower end of the template when the fully closed template is subject to forward and backward limiting, and a balancing clamping portion for applying opposing clamping forces and downward pressure to the upper end of the fully closed template, and the balancing clamping portion is symmetrically arranged on the left and right.

[0009] The end sealing part includes an end clamping piece and an end pushing piece, and the end clamping piece includes a sliding clamping block slidably arranged at the end of the template; the lateral sealing part includes a lateral clamping piece and an upward pushing piece; the lateral clamping piece includes two clamping heads slidably arranged on the back sides of the template and perpendicular to each other.

[0010] Preferably, the end clamping member also includes a plurality of sliding rails evenly arranged up and down and welded and fixedly installed on the opposite sides of the two parallel sections of the template. Two sliding clamping blocks are arranged in the sliding rails for sliding back and forth. The sliding clamping blocks are laterally hinged with push plates. The two push plates are hinged at one end away from the corresponding sliding clamping blocks and the hinge point is located outside the sliding rail. A return spring is connected between the two push plates.

[0011] Preferably, the end pushing member includes a wedge block installed on opposite sides of the front and rear corresponding extension plates, the wedge block corresponds one-to-one to the sliding rail, and the wedge blocks on the front and rear corresponding extension plates are staggered up and down, the inclined surface of the wedge block cooperates with the end of the corresponding pushing plate, and the extension plate is provided with a through groove which corresponds one-to-one to the wedge blocks on the front and rear corresponding extension plates.

[0012] Preferably, the casting mold further comprises an internal pressing part for applying a pressing force from the inside to the outside to the template while the template is subject to forward and backward limiting. The internal pressing part comprises a central bottom mold fixedly arranged in the middle of the upper end of the bottom plate, and horizontal grooves are symmetrically provided on the front and rear sides of the central bottom mold, and an internal pressing plate is slidably installed in the horizontal groove, and an internal spring is connected between the internal pressing plate and the inner wall of the corresponding horizontal groove.

[0013] Preferably, the lateral clamping member also includes a frame arranged on the opposite side of the lower end of the template, and an inclined built-in frame is slidably arranged in the frame. The built-in frame moves toward the bottom of the corresponding template along a 45-degree inclined sliding groove opened on the inner wall of the frame, and a reset spring is connected between the built-in frame and the inner wall of the sliding groove. Rectangular grooves are opened on the bottom wall of the frame and the vertical inner wall at the opposite end of the frame, and clamping heads are installed at the positions corresponding to the rectangular grooves on the built-in frame, and the clamping heads corresponding to the rectangular grooves on the bottom wall and vertical inner wall of the frame are perpendicular to each other.

[0014] Preferably, the upward pushing member includes a main push plate which is arranged relatively front to back and slidably installed on the bottom plate. The upper end of the main push plate is a wedge-shaped structure. The opposite sides of the main push plates arranged front to back are installed with limit plates for limiting the front and rear positions of the mold after mold closing. The bottom plate is provided with an avoidance groove for avoiding the main push plate and the limit plate. The main push plate is installed on the upper end of the lower plate which is located under the bottom plate.

[0015] Preferably, the balancing clamping portion includes an upper clamping member and a locking member; the upper clamping member includes a clamping concave plate slidably arranged forward and backward on the upper end of the template, the front and rear corresponding clamping concave plate openings are relatively arranged, the clamping concave plate is connected to the template through a supporting seat, the supporting seat is installed on the opposite side of the upper end of the template by bolt fixing, the clamping concave plate is slidably connected to the supporting seat, and inclined docking plates are installed on the opposite sides of the clamping concave plates arranged on the left and right.

[0016] The locking piece includes a fixed column arranged at the upper end of the bottom plate, a rotating column installed coaxially at the upper end of the fixed column, and two centrally symmetrical limiting grooves opened on the side of the rotating column. An inverted L-shaped locking strip is installed at the end of the inclined docking plate away from the corresponding abutting concave plate. The limiting groove consists of an arc segment for inserting the horizontal segment of the locking strip, a vertical segment for inserting the vertical segment of the locking strip and connected to one end of the arc segment, and a limiting segment connected to the other end of the arc segment and implementing front and rear limiting on the vertical segment of the locking strip.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention adopts a double-template multi-point pressing and downward fixing method, which simplifies the mold structure, optimizes the fixing method, greatly reduces the mold closing and demolding time, and the double-template structure reduces the number of joints, which is beneficial to improving the subsequent casting and molding accuracy. At the same time, through multi-point, multi-directional pressing and downward fixing, the mold stability is improved, and deformation, displacement or leakage of the mold during casting is avoided, which significantly improves the production efficiency, mold accuracy and stability.

[0018] 2. The present invention utilizes the mold closing process of the double templates to automatically realize the mutual tightening of the ends of the templates, and the mutual tightening force is distributed at multiple points from top to bottom, and then utilizes the process of front and rear limit fixing of the molded template to automatically realize the lateral tightening and downward pressure of the template, and thereafter, utilizes the balancing tightening part to implement mutual tightening and downward pressure on the upper end of the template, thereby increasing the force points of the mold, balancing the upper and lower forces of the mold, realizing comprehensive stability and uniform fixation, ensuring that the mold joints are tight, and the mold closing and fixing processes are highly automated, thereby greatly improving the overall efficiency of casting and molding.

[0019] 3. The present invention utilizes double-end pressing to ensure close contact between the ends of the template, thereby improving the stability and tightness of the first-level mold clamping, utilizes the double-sided pressing and downward pressure of the lower end to prevent enhancing the overall rigidity of the mold, thereby improving the stability and tightness of the second-level mold clamping, utilizes the upper end pressing and downward pressure to reinforce the mold fixing effect, balance the force, and improve the stability and tightness of the third-level mold clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of the enlarged X region.

[0022] Figure 3 It is a cross-sectional view of the present invention before mold closing from a side view angle.

[0023] Figure 4 It is a cross-sectional view of the present invention after mold closing from a side view angle.

[0024] Figure 5 yes Figure 4 Enlarged schematic diagram of the Y region in the middle.

[0025] Figure 6 It is a schematic diagram of the position states of the push plate, the sliding pressing block and the wedge block after mold closing in the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the present invention before mold closing from a top view.

[0027] Figure 8 It is a schematic diagram of the structure of the present invention after mold closing from a top view.

[0028] In the figure: 1, template; 2, extension plate; 20, end abutting member; 21, end pushing member; 200, sliding abutting block; 201, pushing plate; 210, wedge block; 211, through groove; 30, lateral abutting member; 31, upward moving pushing member; 300, abutting head; 301, built-in frame; 302, sliding groove; 303, rectangular groove; 310, main pushing plate; 311, limiting plate; 40, fitting groove; 41, fitting convex block; 50, central bottom mold; 51, inner abutting plate; 60, upper abutting member; 61, locking member; 600, abutting concave plate; 601, inclined docking plate; 610, rotating column; 611, limiting groove; 612, locking bar; 613, fixing column. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0030] Please refer to Figure 1 , a casting mold for precast concrete members used in assembled medium and small culverts and sluices, comprising: a bottom plate and two templates 1 which are slidably arranged in a front-back limiting manner at the upper end of the bottom plate. A horizontal longitudinal groove which is slidably matched with the bottom end of the template 1 is formed at the upper end of the bottom plate. The two templates 1 move towards each other front and back to achieve mold closing. The template 1 is in a U shape and is adapted to the shape of precast concrete members (such as wing walls) used in medium and small culverts and sluices. The template 1 is composed of side plates and two end plates. The end plates are welded and installed at the ends of the side plates. The end plates are the parallel segments of the U-shaped template 1. An extension plate 2 is welded and installed on the side of the end plates away from each other. The extension plate 2 is perpendicular to the end plates. The extension plate 2 increases the contact area at the end of the template 1, which is beneficial to improving the stability and sealing performance of mold closing. At the same time, as an additional support structure, the extension plate 2 can help enhance the anti-deformation ability of the template 1. To ensure the structural strength of the side plates and end plates, reinforcing rib plates are welded and installed on the opposite sides of the side plates and on the opposite sides of the two end plates corresponding to the same side plate. The reinforcing rib plates on the side plates are arranged in a grid pattern.

[0031] Please refer to Figure 1 , Figure 3 and Figure 4The casting mold also includes an end sealing portion for adaptively applying end opposing clamping forces when the mold is fully closed, a lateral sealing portion for adaptively applying opposing clamping forces and downward pressure to the lower end of the template 1 when the fully closed template 1 is subject to forward and backward limiting, an internal clamping portion for applying a clamping force from the inside to the outside to the template 1 when the template 1 is subject to forward and backward limiting, and a balancing clamping portion for applying opposing clamping forces and downward pressure to the upper end of the fully closed template 1, and the balancing clamping portion is symmetrically arranged on the left and right; the balancing clamping portion can increase the clamping force points of the template 1 and balance the forces on the upper and lower ends of the template 1.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The end sealing part includes an end clamping member 20 and an end pushing member 21. The end clamping member 20 includes a plurality of sliding rails evenly arranged up and down and fixedly installed on the opposite sides of the two parallel sections of the template 1. Two sliding clamping blocks 200 are arranged in the sliding rails for sliding forward and backward. The sliding clamping blocks 200 are hinged with a pushing plate 201 laterally. The two pushing plates 201 are hinged at one end away from the corresponding sliding clamping blocks 200 and the hinge point is located outside the sliding rail. A return spring is connected between the two pushing plates 201; the reinforcing rib plate on the end plate is also welded and fixed to the outer surface of the sliding rail. The end of the sliding track is welded and fixed to the side wall of the right-angle connection between the end plate and the extension plate 2, so as to further improve the overall structural strength of the end plate and the extension plate 2; the end pusher 21 includes a wedge block 210 installed on the opposite sides of the front and rear corresponding extension plates 2, the wedge block 210 corresponds to the sliding track one by one, and the wedge blocks 210 on the front and rear corresponding extension plates 2 are staggered up and down, the inclined surface of the wedge block 210 cooperates with the end of the corresponding push plate 201, and the extension plate 2 is provided with a through groove 211 which corresponds to the wedge block 210 on the front and rear corresponding extension plates 2.

[0033] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The internal pressing part includes a central bottom mold 50 fixedly arranged in the middle of the upper end of the bottom plate. Horizontal grooves are symmetrically provided on the front and rear sides of the central bottom mold 50. An inner pressing plate 51 is slidably installed in the horizontal groove. An internal spring is connected between the inner pressing plate 51 and the inner wall of the corresponding horizontal groove. During the mold closing process, the template 1 pushes the inner pressing plate 51 to move along the horizontal groove and compresses the internal spring. The template 1 stops moving after pressing against the side of the central bottom mold 50. The inner pressing plate 51 presses against the inner wall of the template 1 under the elastic force of the internal spring.

[0034] Mold closing and end-to-end pressing operation: When the two templates 1 move toward each other front and back (can be performed manually or by an external drive source), the template 1 drives the corresponding end sealing part and the side sealing part to move synchronously, and the wedge block 210 gradually penetrates the corresponding through groove 211. When the inclined surface of the wedge block 210 contacts the ends of the two hinged push plates 201 and continues to move, under the action of the inclined surface of the wedge block 210, the angle between the two hinged push plates 201 increases, so that the two sliding pressing plates in the sliding track are pressed together. The tightening blocks 200 move away from each other until the sliding tightening block 200 close to the extension plate 2 presses against the right-angle connection between the end plate and the extension plate 2, and at this time the two templates 1 are completely molded; in addition, in the process of the templates 1 moving toward each other, when the template 1 contacts the inner abutment plate 51 and continues to move, the inner abutment plate 51 is pushed by the template 1 to move toward the inside of the horizontal groove and compress the built-in spring, and the template 1 stops moving when it presses against the side of the center bottom mold 50, and at this time the inner abutment plate 51 tightly presses against the inner side of the template 1 under the elastic force of the built-in spring.

[0035] The right-angle connection between the end plate and the extension plate 2 is pressed evenly in multiple positions from bottom to bottom, so that the front and rear extension plates 2 fit tightly under the action of the opposing pressing forces, thereby improving the sealing degree of the mold, avoiding leakage in subsequent casting and molding, and ensuring the casting and molding quality of the prefabricated parts.

[0036] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 The lateral sealing part includes a lateral holding member 30 and an upward pushing member 31; the lateral holding member 30 includes a frame arranged on the opposite side of the lower end of the template 1, and the frame can be fixed to the side of the template 1 by bolts or welding. An inclined built-in frame 301 is slidably arranged in the frame, and the built-in frame 301 moves toward the bottom of the corresponding template 1 along a 45-degree inclined sliding groove 302 opened on the inner wall of the frame. As shown in the figure, the angle between the built-in frame 301 and the horizontal bottom wall of the frame is 45 degrees, and a reset spring is connected between the built-in frame 301 and the inner wall of the sliding groove 302, and the bottom wall of the frame is Rectangular grooves 303 are provided on the vertical inner walls at the opposite ends of the frame, and tightening heads 300 are installed at the positions corresponding to the rectangular grooves 303 on the built-in frame 301. The tightening heads 300 corresponding to the rectangular grooves 303 on the bottom wall and vertical inner wall of the frame on the built-in frame 301 are perpendicular to each other; the built-in frame 301 is a T-shaped structure, and the end of the built-in frame 301 that is perpendicular to the sliding groove 302 is connected to the tightening head 300, and the end of the end parallel to the sliding groove 302 is chamfered; in order to improve the structural strength of the tightening head 300, a reinforcing plate is installed between the side of the tightening head 300 and the built-in frame 301.

[0037] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 The upward pushing member 31 includes a main push plate 310 with an upper end having a wedge-shaped structure, which is arranged front to back and slides up and down on the bottom plate. A limit plate 311 for limiting the front and rear positions of the molded template 1 is installed on the opposite side of the main push plate 310 arranged front to back. An avoidance groove for avoiding the main push plate 310 and the limit plate 311 is provided on the bottom plate. The main push plate 310 is installed on the upper end of the lower plate located under the bottom plate. A number of evenly arranged elastic telescopic rods are installed in the middle of the upper end of the lower plate. A slot for inserting the upper end of the elastic telescopic rod is provided at the position of the spring telescopic rod at the lower end of the bottom plate. In order to improve the structural strength of the main push plate 310, a reinforcing plate is also installed between the front and rear sides of the main push plate 310 and the upper end of the lower plate.

[0038] After the mold closing and the end-to-end pressing operations are completed, the front and rear limiting and lateral pressing operations of the template 1 are to be implemented next. Specifically: the lower plate drives the elastic telescopic rod and the main push plate 310 to move upward, and the main push plate 310 drives the limiting plate 311 to move synchronously. When the inclined surface at the upper end of the main push plate 310 contacts the rounded end of the built-in frame 301 and continues to move upward, under the action of the inclined surface at the upper end of the main push plate 310, the built-in frame 301 drives the pressing head 300 to move along the 45-degree inclined sliding groove 302. Finally, the pressing head 300 in the horizontal state presses against the rectangular groove 303 on the vertical inner wall at the opposite end of the frame, and the pressing head 300 in the vertical state presses against the rectangular groove 303 on the inner bottom wall of the frame. At the same time, the upper end of the elastic telescopic rod presses against the inner top wall of the slot, and the elastic telescopic rod is at In the compressed state, the limiting plate 311 cooperates with the center bottom mold 50 to implement the front and rear limit of the template 1. The clamping head 300 transmits the horizontal clamping force and the downward pressure to the template 1 through the frame at the same time, and applies the lateral opposite clamping force and downward pressure to the lower end of the fully molded template 1. The lateral clamping force is used to enhance the lateral stability of the template 1, prevent lateral deformation, further ensure the close fit of the side of the template 1, and thus improve the overall dimensional accuracy of the prefabricated part. The downward pressure is used to fix the template 1 on the bottom plate, further improve the position stability between the molded template 1 and the center bottom mold 50 and the bottom plate, ensure the mold stability, sealing and accuracy, and ensure uniform filling of concrete. When the limiting plate 311 cooperates with the center bottom mold 50 to implement the front and rear limit of the template 1, the inner plate 51 applies the clamping force from the inside to the outside to the template 1 under the elastic force of the built-in spring, which will further improve the position stability between the limiting plate 311, the center bottom mold 50 and the template 1, and further ensure the mold stability, sealing and accuracy.

[0039] At the same time, the opposite force tightening operation at multiple positions of the end is realized without drive during the movement of the template 1 for mold closing, and the lateral tightening operation is realized synchronously during the process of implementing front and rear limit of the template 1. This not only shortens the mold closing and post-mold fixing time, improves the overall production efficiency, but also reduces manual operation, reduces drive control costs, and reduces the complexity of assembly and disassembly.

[0040] It should be noted that the base plate is erected on the ground of the existing work site through the bottom pier. A driving source (such as a hydraulic rod, an electric push rod, etc.) can be set between the lower plate and the base plate to control the lower plate to drive the main push plate 310 to move upward. The lower plate can also be moved up manually. After the lower plate is moved up to the maximum displacement, the position of the lower plate is limited by pushing the existing block between the lower plate and the ground. The lower plate is in a state of being placed on the ground before it is moved up. The specific way of moving the lower plate up can be selected according to actual work needs and work costs.

[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 The balanced pressing part includes an upper pressing member 60 and a locking member 61; the upper pressing member 60 includes a pressing concave plate 600 slidably arranged at the upper end of the template 1, and the openings of the corresponding pressing concave plates 600 are arranged opposite to each other. The pressing concave plate 600 is connected to the template 1 through a supporting seat, and the supporting seat is installed on the opposite side of the upper end of the template 1 by bolts. The pressing concave plate 600 is slidably connected to the supporting seat, and the opposite sides of the pressing concave plates 600 arranged on the left and right are both installed with inclined docking plates 601; the locking member 61 includes a fixed upper end of the bottom plate The fixed column 613, the rotating column 610 coaxially mounted on the upper end of the fixed column 613, and the two centrally symmetrical limiting grooves 611 opened on the side of the rotating column 610, the end of the inclined docking plate 601 away from the corresponding concave plate 600 is installed with an inverted L-shaped locking strip 612, and the limiting groove 611 is composed of an arc section for inserting the horizontal section of the locking strip 612, a vertical section for inserting the vertical section of the locking strip 612 and connected to one end of the arc section, and a limiting section connected to the other end of the arc section and implementing front and rear limiting on the vertical section of the locking strip 612. It should be noted that the existence of the fixed column 613 and the rotating column 610 will not affect the demoulding of the subsequent prefabricated parts. During demoulding, after the template 1 moves away from the prefabricated parts and is separated, the prefabricated parts are usually removed using existing lifting equipment. Alternatively, when processing the casting mold, according to the size of the prefabricated part to be cast, ensure that when the template 1 moves back to back to the maximum displacement, the relative distance between it and the fixed column 613 is sufficient for the subsequent molded prefabricated part to be moved out.

[0042] After the front and rear limiting and lateral tightening operations of the template 1 are completed, the next step is to tighten and press the upper end of the template 1. Specifically: manually move the corresponding front and rear tightening concave plates 600 toward each other, and the tightening concave plates 600 move along the supporting seat in a directional manner. The inclined docking plate 601 drives the locking strip 612 to move synchronously with the corresponding tightening concave plate 600. Finally, the vertical section of the locking strip 612 enters the vertical section of the limiting groove 611. At this time, the end of the lower horizontal section of the tightening concave plate 600 presses against the side of the template 1, and the upper horizontal section is pressed against the upper end surface of the template 1. The tightening concave plates 600 can no longer move toward each other and remain motionless. Then, the rotating column 610 drives the limiting groove 611 to rotate manually, and the horizontal section of the locking strip 612 moves along the arc section of the limiting groove 611. Move, the vertical section of the locking strip 612 gradually enters the limiting section of the limiting groove 611 until the rotating column 610 cannot rotate. At this time, the vertical section of the locking strip 612 cannot move forward or backward due to the limitation of the limiting section of the limiting groove 611, and then the position of the pressing concave plate 600 is limited at this time, so that the pressing concave plate 600 maintains lateral pressing and downward pressure on the template 1 during the subsequent casting and molding, further ensuring the close fit between the templates 1, and cooperating with the lateral pressing of the lower end of the template 1, balancing the forces on the upper and lower ends of the template 1, further ensuring the stability of the current position of the template 1, and thereby improving the overall dimensional accuracy of the prefabricated part.

[0043] In addition, when the pressing and pressing operations at the upper end of the template 1 are completed, a triangular stable structure is formed between the inclined docking plate 601 and the pressing recessed plate 600 belonging to the same balanced pressing part. The template 1 and the triangular stable structures on the left and right sides and the fixed column 613, the rotating column 610, and the bottom plate constitute a three-dimensional multi-prism stable structure. The triangular stable structure is connected to the bottom plate through the fixed column 613 and the rotating column 610 to form a rigid frame, which enhances the template 1's ability to resist lateral deformation and significantly improves the overall stability of the template 1 system. At the same time, during the pouring process, the pressure and vibration of the concrete will be evenly dispersed by the triangular stable structure and the three-dimensional multi-prism stable structure to avoid local stress concentration, reduce local deformation of the template 1, extend the service life of the template 1, and also reduce the need for additional supporting structures. The formation and locking method of the triangular stable structure is simple and reliable, and easy to assemble and disassemble.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8In order to further improve the fit tightness and relative position stability between the front and rear corresponding extension plates 2, the following settings are made: a fitting groove 40 is opened on the front side of the extension plate 2 connected to the rear template 1, and the end of the fitting groove 40 is chamfered, and a fitting protrusion 41 that is plugged into the fitting groove 40 is installed on the rear side of the extension plate 2 connected to the front template 1. The fitting groove 40 is located between the upper and lower adjacent wedge blocks 210. There are a number of fitting grooves 40 on the extension plate 2 and they are evenly divided into two groups, the upper and lower groups, and the fitting grooves 40 in each group are arranged equidistantly in the left and right directions.

[0045] When the front and rear templates 1 are completely aligned with each other, the fitting groove 40 is completely inserted into the corresponding fitting protrusion 41, and the plug-in cooperation between the fitting groove 40 and the fitting protrusion 41 is utilized to increase the tightness of fit and the relative position stability between the extension plates 2, thereby enhancing the connection strength between the templates 1, making the two templates 1 more firm after the mold is closed, further improving the accuracy, stability and connection strength of the mold closing, and improving production efficiency.

[0046] See also Figures 1 to 8 In summary, the casting mold for prefabricated concrete parts for assembled small and medium-sized culverts provided by the present invention only needs to achieve mold closing and multi-area, multi-point, and multi-directional highly adaptive tight limiting after mold closing through the continuous and simple actions of "one push, two rises, three shifts, and four turns", thereby ensuring the stability, sealing, and accuracy of the mold closing.

[0047] One push: Push the front and rear templates 1 toward each other, and during the mold closing process, the ends of the templates 1 are automatically pressed against each other through the end sealing parts.

[0048] Second, rising: after the mold is closed, the upward pusher 31 moves upward and cooperates with the internal pressing part to implement front and rear position limiting of the template 1, and automatically realizes lateral pressing and downward pressing of the lower end of the template 1.

[0049] Third shift: After the lateral pressing and downward pressing of the lower end of the template 1 are completed, the pressing concave plates 600 are moved toward each other to complete the lateral pressing and downward pressing of the upper end of the template 1.

[0050] Fourth rotation: After completing the lateral pressing and downward pressing of the upper end of the template 1 , the rotating column 610 is immediately rotated to limit the position of the pressing concave plate 600 by using the limiting groove 611 .

[0051] The above-mentioned whole process is completed at one time and after the mold is closed, there is no need to install a number of bolts and other structures one by one to achieve mold clamping and fixing. The overall operation is simple and convenient.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated concrete casting mold for assembled small and medium-sized culverts, characterized in that: include: The bottom plate and two U-shaped templates slidably arranged on the upper end thereof; The end sealing part includes an end abutting member and an end pushing member; The end abutment member comprises a sliding abutment block slidably arranged forward and backward at the end of the template; The end pusher is used to move the sliding clamping block toward the end of the template and apply a clamping force to the end of the template when the two templates are molded together; The lateral sealing part includes a lateral abutting member and an upward pushing member; the lateral abutting member includes two abutting heads which are slidably arranged on opposite sides of the template and are perpendicular to each other; After the two templates are completely molded, the upward pusher moves upward to limit the template in the front and rear directions, and the upward pusher pushes the two abutting heads to synchronously abut the lower end of the template and applies opposite abutting forces and downward pressure to the lower end of the template; The balanced pressing part is symmetrically arranged on the left and right and includes a pressing concave plate that slides forward and backward. After the mold is completely closed, the pressing concave plates move toward each other to apply opposite pressing forces and downward pressure to the upper end of the template.

2. The prefabricated concrete casting mold for assembled small and medium-sized culverts according to claim 1 is characterized in that: It also includes an extension plate, which is arranged on the opposite sides of the two parallel sections of the template, and the extension plate is perpendicular to the parallel sections of the template; The end clamping member also includes a sliding track fixedly installed on the opposite sides of the two parallel sections of the template. The sliding clamping block is installed in the sliding track for sliding back and forth. A pushing plate is arranged at the side end of the sliding clamping block.

3. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 2 is characterized in that: The end pusher includes wedge blocks installed on opposite sides of the corresponding front and rear extension plates. The extension plates are provided with through grooves corresponding to the wedge blocks on the corresponding front and rear extension plates. When the templates move toward each other to close the mold, the push plates are pushed by the inclined surfaces of the wedge blocks.

4. The prefabricated concrete casting mold for assembled small and medium-sized culverts according to claim 1 is characterized by: The lateral clamping member also includes a frame and an inner frame arranged on the opposite side of the lower end of the template. The inner frame moves toward the bottom of the corresponding template along a 45-degree inclined sliding groove opened on the inner wall of the frame. A reset spring is connected between the inner frame and the inner wall of the sliding groove. Rectangular grooves are opened on the bottom wall of the frame and the inner wall on the opposite side of the frame. Two clamping heads are installed on the inner frame, and the rectangular grooves correspond to the clamping heads one by one.

5. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 4 is characterized in that: The upward pushing member includes a main push plate which is arranged relatively frontally and rearly and is installed on the bottom plate for sliding up and down. The upper end of the main push plate is a wedge-shaped structure. The opposite side of the main push plate arranged frontally and rearward is installed with a limit plate for limiting the front and rear positions of the template after mold closing. After the mold is completely closed, the limit plate moves up to make the clamping head clamped in the corresponding rectangular groove.

6. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 1 is characterized by: Also includes an internal abutment portion; The internal clamping part is used to apply a clamping force from the inside to the outside to the lower end of the template when the template accepts the front and rear limit.

7. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 6 is characterized by: The internal tightening part includes a central bottom mold fixedly arranged in the middle of the upper end of the bottom plate, and horizontal grooves are symmetrically opened on the front and rear sides of the central bottom mold. An inner abutment plate is slidably installed in the horizontal groove, and an internal spring is connected between the inner abutment plate and the inner wall of the corresponding horizontal groove.

8. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 1 is characterized by: The tightening concave plate is slidably arranged on the upper end of the template, and the corresponding tightening concave plate openings are arranged opposite to each other. The balancing and tightening portion also includes an upper tightening member; The upper clamping member includes inclined docking plates installed on the opposite sides of the clamping concave plates arranged on the left and right. After the mold is completely closed, the clamping concave plates move toward each other to apply opposite clamping forces and downward pressure to the upper end of the template.

9. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 8, characterized in that: The balancing and tightening portion further includes a locking piece; A triangular stable structure is formed between the inclined butt joint plate and the concave abutment plate belonging to the same balancing abutment portion, and then the triangular stable structure is locked by a locking piece.

10. The casting mold for prefabricated concrete parts for assembled small and medium-sized culverts according to claim 9, characterized in that: The locking member includes a rotating column rotatably arranged at the upper end of the bottom plate, two centrally symmetrical limiting grooves opened on the side of the rotating column, and an inverted L-shaped locking strip is installed at one end of the inclined docking plate away from the corresponding tightening concave plate. After the triangular stable structure is formed, the rotating column is rotated so that the limiting groove limits the vertical section of the locking strip forward and backward.

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