Prefabricated concrete pavement slab production mold

Abstract

The utility model relates to the technical field of precast slabs, in particular to a precast concrete pavement slab production mold which comprises a bottom mold, a pressing mold and a demolding unit, the demolding unit comprises a supporting frame, a second air cylinder and a top plate, the pressing mold is located above the bottom mold, and the top of the top plate is located inside the bottom mold. The bottom of the top plate penetrates through the bottom die and extends to the position below the bottom die, the fixed end of the second air cylinder is connected to the bottom of the bottom die through a supporting frame, and the output end of the second air cylinder is located between the supporting frame and the bottom die and connected with the bottom of the top plate; the second air cylinder and the top plate are arranged at the bottom of the bottom die, the air cylinders are used for driving the top plate to ascend and descend, and therefore it is guaranteed that prefabricated concrete pavement slabs of different sizes and different weights are separated from the bottom die, meanwhile, the demolding reliability and demolding efficiency are improved, the application range is wider, and different demolding requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated panels, in particular to a production mould for prefabricated concrete road panels. Background Art

[0002] Precast concrete road panels are mainly used for temporary road paving or places with low usage loads such as parks. They have a simple structure and are easy to lay. Concrete road panels can be prefabricated in advance to avoid on-site pouring, resulting in a fast construction cycle and low cost.

[0003] When prefabricating concrete road panels, the corresponding mold is usually selected according to the actual size and shape, and then concrete is poured inside it to form the panel. The prefabricated concrete road panel is then taken out. For example, the Chinese utility model patent with application number 202121403190.3 provides a steel mold for a plain concrete slab, which uses a main mold to prefabricate the concrete slab, and then uses a reset spring to drive the ejection plate to move upward to realize the demolding of the concrete slab.

[0004] However, this method of demoulding concrete slabs is only suitable for prefabrication of lightweight and small concrete slabs. For heavier concrete slabs, demoulding cannot rely on the elasticity of the return spring, and cannot meet the actual prefabrication requirements of concrete road panels. Utility Model Content

[0005] The purpose of the utility model is to provide a production mold for precast concrete road panels to solve the technical problem that precast concrete road panels cannot meet demoulding requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A mold for producing precast concrete road panels includes a bottom mold, a pressure mold and a demoulding unit. The demoulding unit includes a support frame, a second cylinder and a top plate. The pressure mold is located above the bottom mold, the top of the top plate is located inside the bottom mold, and the bottom of the top plate extends through the bottom mold to the bottom of the bottom mold. The fixed end of the second cylinder is connected to the bottom of the bottom mold through the support frame, the output end of the second cylinder is located between the support frame and the bottom mold, and the output end of the second cylinder is connected to the bottom of the top plate.

[0008] It is further defined that the output end of the second cylinder is connected to the bottom of the top plate through a connecting plate, and a through groove is provided at the bottom of the bottom mold, and the through groove matches the top of the top plate.

[0009] It is further defined that the precast concrete road panel production mold also includes a release agent spraying unit, which includes a liquid storage tank, a liquid pump, a hose and a nozzle connected in sequence, the liquid storage tank is arranged on the top of the pressing mold, and the nozzle is arranged opposite to the inner wall of the bottom mold.

[0010] It is further defined that the number of the hoses is four, the number of the liquid pumps is two, a tee is connected to the liquid pump, the four hoses are equally divided and arranged on opposite sides of the liquid storage tank, the two hoses are connected to the corresponding liquid pumps through the tee, the number of the nozzles is the same as the number of the hoses, and the nozzles and the hoses are arranged in a one-to-one correspondence.

[0011] It is further defined that the release agent spraying unit also includes a bracket, a screw, a baffle, a screw drive, a threaded block and a hanger, the screw is connected to the peripheral side of the die through the bracket, the fixed end of the screw drive is connected to the bracket, the output end of the screw drive is connected to the screw, the threaded block is threadedly connected to the screw, the baffle is connected to the die through the bracket, the baffle is located above the threaded block, and the nozzle is connected to the threaded block through the hanger; the baffle and the bracket are both located on the outside of the liquid storage tank.

[0012] It is further defined that the precast concrete road slab production mold further includes a demoulding support unit, the number of the demoulding support units is two, and the two demoulding support units are arranged on opposite sides of the bottom mold.

[0013] It is further defined that the demolding support unit includes a mounting sleeve, a first cylinder, a slider and a holder, the mounting sleeve is arranged on the side wall of the bottom mold, the fixed end of the first cylinder is connected to the outer wall of the mounting sleeve, the output end of the first cylinder extends to the interior of the mounting sleeve, the holder is connected to the output end of the first cylinder through the slider, the slider is slidably connected to the outer wall of the mounting sleeve, and the holder is located above the bottom mold.

[0014] It is further defined that a hydraulic cylinder is provided on the top of the die, a stand is provided on the outside of the bottom die, and a standing foot is provided on the bottom of the bottom die. The standing foot is located on the outside of the demolding unit, and the top of the stand extends to the top of the die. The fixed end of the hydraulic cylinder is connected to the stand, and the output end of the hydraulic cylinder is connected to the top of the die. The hydraulic cylinder is located on the outside of the liquid storage tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model sets a second cylinder and a top plate at the bottom of the bottom mold, and uses the cylinder to drive the top plate to rise and fall, thereby ensuring that precast concrete road panels of different volumes and weights can be separated from the bottom mold, while improving the demoulding reliability and demoulding efficiency, with a wider range of applications to meet different demoulding needs.

[0017] 2. The utility model is also provided with a demoulding machine spraying unit to spray the demoulding agent on the inner wall of the bottom mold, thereby improving the demoulding efficiency and demoulding reliability, and avoiding damage to the precast concrete road panel during the demoulding process; at the same time, the screw rod and the hanger are used to drive the nozzle to spray reciprocatingly, which is simple to operate and reduces labor costs. At the same time, the spraying is more uniform and reliable, ensuring the reliability of demoulding.

[0018] 3. The present invention also supports the precast concrete road panel after demoulding by arranging a demoulding support unit, which is convenient for the later transfer using lifting equipment, reduces the time occupied by the bottom formwork, improves utilization rate, and also improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of a release agent spraying unit of the present utility model;

[0021] Figure 3 This is a schematic diagram of the top view of the die structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the demoulding unit structure of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the demoulding support unit of the present utility model;

[0024] In the figure: 1. Base mold; 2. Press mold; 3. Bracket; 4. Screw; 5. Baffle; 6. Stand; 7. Hydraulic cylinder; 8. Liquid storage tank; 9. Liquid pump; 10. Tee; 11. Hose; 12. Threaded block; 13. Hanging rod; 14. Nozzle; 15. Holder; 16. First cylinder; 17. Mounting sleeve; 18. Standing foot; 19. Support frame; 20. Top plate; 21. Second cylinder; 22. Through groove; 23. Connecting plate; 24. Slider; 25. Screw drive. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-5This embodiment provides a precast concrete road panel production mold, including a bottom mold 1, a pressure mold 2 and a demolding unit. The demolding unit includes a support frame 19, a second cylinder 21 and a top plate 20. The top plate 20 is located inside the bottom mold 1 and is used to eject the precast concrete road panel formed in the bottom mold 1 out of the bottom mold 1 under the action of the second cylinder 21.

[0028] Specifically, the support frame 19 is a U-shaped structure connected to the bottom of the bottom mold 1, the fixed end of the second cylinder 21 is located below the support frame 19, and the output end of the second cylinder 21 passes through the bottom of the support frame 19 and is connected to the top of the top plate 20. The top plate 20 can be optionally a T-plate. The top plate 20 is arranged along the width direction of the bottom mold 1, and a through groove 22 is opened at the bottom of the bottom mold 1. The through groove 22 matches the top size of the top plate 20, and the bottom of the top plate 20 extends through the through groove 22 to the bottom of the bottom mold 1.

[0029] When the top of the top plate 20 is tightly fitted with the through groove 22 under the action of the second cylinder 21, the flatness of the bottom of the precast concrete road panel is reduced; when demolding, the second cylinder 21 drives the top plate 20 to move upward to push the formed precast concrete road panel out of the bottom mold 1.

[0030] Preferably, the second cylinder 21 is connected to the top plate 20 through a connecting plate 23. The number of top plates 20 can be selected as two, and the two are arranged in sequence along the length direction of the bottom mold 1; the number of second cylinders 21 can also be selected as two to improve the applicability of demolding of precast concrete road panels.

[0031] To further explain, a standing foot 18 is further provided at the bottom of the bottom mold 1 . The standing foot 18 is located on the peripheral side of the demoulding unit and serves to support the bottom mold 1 .

[0032] To further explain, a stand 6 is provided on the bottom mold 1. The stand 6 is a C-shaped structure. The stand 6 extends from the outside of the bottom mold 1 to the top of the die 2. The fixed end of the hydraulic cylinder 7 is connected to the stand 6. The output end of the hydraulic cylinder 7 passes through the stand 6 and is connected to the top of the die 2. The hydraulic cylinder 7 is located on the outside of the liquid storage tank 8. The die 2 is driven up and down by the hydraulic cylinder 7 to realize the forming of the precast concrete road panel.

[0033] Example 2

[0034] Based on Example 1, the precast concrete road panel production mold provided in this embodiment also includes a release agent spraying unit, which includes a liquid storage tank 8, a liquid pump 9, a hose 11 and a nozzle 14 connected in sequence. The liquid storage tank 8 is arranged on the top of the compression mold 2, and the nozzle 14 is arranged opposite to the inner wall of the bottom mold 1, so that before the operation, the liquid pump 9 sprays the release agent in the liquid storage tank 8 on the inner wall of the bottom mold 1 through the hose 11 and the nozzle 14, which is convenient for later demolding, and can also reduce the damage to the precast concrete road panel during the demolding process, further meeting the needs of high-quality demolding.

[0035] Specifically, the number of hoses 11 can be selected as four, the number of liquid pumps 9 can be selected as two, the liquid pumps 9 are connected to opposite sides of the liquid storage tank 8, the liquid pump 9 is connected to the two hoses 11 through the three-way pipe 10, the number of nozzles 14 can be selected as four, and the four nozzles 14 are connected to the four hoses 11 in a one-to-one correspondence to improve the spraying efficiency of the release agent.

[0036] Further explanation, in order to improve the spraying efficiency and uniformity of the release agent, the preferred demoulding spraying unit also includes a bracket 3, a screw 4, a baffle 5, a screw drive 25, a threaded block 12 and a hanger 13. The bracket 3 is sleeved on the outside of the die 2, and the screw 4 is connected to the bracket 3 along the length direction of the die 2. The screw 4 is located on the outside of the die 2, and the screw drive 25 is connected to one end of the screw 4. The screw drive 25 is connected to the bracket 3 to drive the rotation of the screw 4.

[0037] The baffle 5 is connected to the bracket 3 so that the baffle 5 is located above the screw rod 4. The threaded block 12 is sleeved on the outside of the screw rod 4 and is threadedly connected to the screw rod 4. The baffle 5 is used to limit the threaded block 12 so that when the screw rod 4 rotates, the threaded block 12 is driven to move back and forth along the screw rod 4; at this time, the nozzle 14 is connected to the threaded block 12 through the suspension rod 13.

[0038] Preferably, the screw rod 4 includes a first rod and a second rod, the first rod and the second rod are connected in sequence, and the thread direction of the first rod is opposite to the thread direction of the second rod. There are two thread blocks 12, and the two thread blocks 12 are respectively connected to the first rod and the second rod to achieve uniform spraying of the two nozzles 14.

[0039] Example 3

[0040] Based on Example 2, the precast concrete road panel production mold provided in this embodiment also includes a demolding support unit. The number of the demolding support units is two, and the two demolding support units are arranged on opposite sides of the bottom mold 1. They are used to support the formed precast concrete road panel by using the demolding support units after the top plate 20 pushes out the precast concrete road panel, so as to facilitate lifting.

[0041] Specifically, the demolding support unit includes a mounting sleeve 17, a first cylinder 16, a slider 24 and a holder 15. The first cylinder 16 is horizontally arranged and connected to the mounting sleeve 17. The telescopic end of the first cylinder 16 extends to the interior of the mounting sleeve 17 and is coaxially arranged with the mounting sleeve 17. The mounting sleeve 17 is connected to the side wall of the bottom mold 1, the top of the slider 24 is connected to the holder 15, and the bottom of the slider 24 passes through the mounting sleeve 17 and is connected to the telescopic end of the first cylinder 16, so that the first cylinder 16 drives the holder 15 to move back and forth.

[0042] The holder 15 is located above the bottom form 1 . When in use, the first cylinder 16 pushes the holder 15 between the bottom form 1 and the precast concrete road panel. Then the second cylinder 21 retracts, and the precast concrete road panel is supported by the holder 15 .

[0043] Working principle:

[0044] When the utility model is in use, first, the prepared release agent is poured into the liquid storage tank 8, and then introduced into the tee pipe 10 and the hoses 11 on both sides through the liquid pump 9; at the same time, the screw drive 25 is started to drive the screw 4 to rotate, and the threaded block 12 under the baffle 5 moves in the horizontal direction, and the nozzle 14 is driven by the suspension rod 13 to spray toward the inner wall of the bottom mold 1, so as to replenish the release agent in the inner cavity of the bottom mold 1 and prevent the concrete slurry from sticking to the bottom mold 1.

[0045] Subsequently, after cement slurry is poured into the bottom mold 1, the hydraulic cylinder 7 is used to drive the pressing mold 2 to move downward to be shaped, and after completion, the pressing mold 2 is driven to move upward.

[0046] Then start the second cylinder 21 at the bottom of the support frame 19, lift the top plate 20 connected to the connecting plate 23, and lift the top plate 20 from the through groove 22. After the formed precast concrete road panel is lifted to a certain height by the top plate 20, the first cylinder 16 pushes the slider 24 to guide the card seat 15 to be clamped on the side end of the precast concrete road panel, which is convenient for subsequent lifting and transportation.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A precast concrete road panel production mold, characterized in that: The invention comprises a bottom mold (1), a pressure mold (2) and a demoulding unit, wherein the demoulding unit comprises a support frame (19), a second cylinder (21) and a top plate (20), wherein the pressure mold (2) is located above the bottom mold (1), the top of the top plate (20) is located inside the bottom mold (1), the bottom of the top plate (20) passes through the bottom mold (1) and extends to the bottom of the bottom mold (1), the fixed end of the second cylinder (21) is connected to the bottom of the bottom mold (1) through the support frame (19), the output end of the second cylinder (21) is located between the support frame (19) and the bottom mold (1), and the output end of the second cylinder (21) is connected to the bottom of the top plate (20).

2. The precast concrete road slab production mold according to claim 1, characterized in that: The output end of the second cylinder (21) is connected to the bottom of the top plate (20) through a connecting plate (23); a through groove (22) is provided at the bottom of the bottom mold (1); and the through groove (22) matches the top of the top plate (20).

3. The precast concrete road slab production mold according to claim 1, characterized in that: The precast concrete road panel production mold also includes a release agent spraying unit, which includes a liquid storage tank (8), a liquid pump (9), a hose (11) and a nozzle (14) connected in sequence. The liquid storage tank (8) is arranged on the top of the compression mold (2), and the nozzle (14) is arranged opposite to the inner wall of the bottom mold (1).

4. The precast concrete road slab production mold according to claim 3, characterized in that: The number of the hoses (11) is four, the number of the liquid pumps (9) is two, the liquid pumps (9) are connected to a tee pipe (10), the four hoses (11) are equally arranged on opposite sides of the liquid storage tank (8), two of the hoses (11) are connected to the corresponding liquid pumps (9) through the tee pipe (10), the number of the nozzles (14) is the same as the number of the hoses (11), and the nozzles (14) and the hoses (11) are arranged in a one-to-one correspondence.

5. The precast concrete road slab production mold according to claim 3, characterized in that: The release agent spraying unit further comprises a bracket (3), a screw (4), a baffle (5), a screw drive (25), a threaded block (12) and a suspension rod (13); the screw (4) is connected to the peripheral side of the die (2) through the bracket (3); the fixed end of the screw drive (25) is connected to the bracket (3); the output end of the screw drive (25) is connected to the screw (4); the threaded block (12) is threadedly connected to the screw (4); the baffle (5) is connected to the die (2) through the bracket (3); the baffle (5) is located above the threaded block (12); the nozzle (14) is connected to the threaded block (12) through the suspension rod (13); and the baffle (5) and the bracket (3) are both located outside the liquid storage tank (8).

6. The precast concrete road slab production mold according to claim 5, characterized in that: The precast concrete road slab production mould further comprises a demoulding support unit, the number of the demoulding support units is two, and the two demoulding support units are arranged on opposite sides of the bottom mould (1).

7. The precast concrete road slab production mold according to claim 6, characterized in that: The demoulding support unit comprises a mounting sleeve (17), a first cylinder (16), a slider (24) and a holder (15); the mounting sleeve (17) is arranged on the side wall of the bottom mold (1); the fixed end of the first cylinder (16) is connected to the outer wall of the mounting sleeve (17); the output end of the first cylinder (16) extends to the interior of the mounting sleeve (17); the holder (15) is connected to the output end of the first cylinder (16) through the slider (24); the slider (24) is slidably connected to the outer wall of the mounting sleeve (17); and the holder (15) is located above the bottom mold (1).

8. The precast concrete road slab production mold according to claim 7, characterized in that: A hydraulic cylinder (7) is provided on the top of the die (2), a stand (6) is provided on the outside of the bottom die (1), and a standing foot (18) is provided on the bottom of the bottom die (1). The standing foot (18) is located on the outside of the demoulding unit. The top of the stand (6) extends to the top of the die (2). The fixed end of the hydraulic cylinder (7) is connected to the stand (6), and the output end of the hydraulic cylinder (7) is connected to the top of the die (2). The hydraulic cylinder (7) is located on the outside of the liquid storage tank (8).

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