Lintel pouring mold and using method

Abstract

The invention provides a lintel pouring mold and a using method. The lintel pouring mold comprises a bottom mold, a first side mold, a second side mold and a third side mold, wherein the first side mold, the second side mold and the third side mold are arranged on the bottom mold; the first side mold and the second side mold are respectively L-shaped, and the concave directions of the first side mold and the second side mold are opposite to define a rectangular pouring area with adjustable width; the third side formwork is arranged in the rectangular pouring area and can move in the length direction of the rectangular pouring area, and the rectangular pouring area is at least divided into a first rectangular subarea and a second rectangular subarea which are independent of each other. According to the lintel pouring mold, the first side mold body and the second side mold body are prefabricated parts and can be mounted and dismounted only by operating the connecting bolts, and compared with a traditional wood mold erecting technology, the lintel pouring mold is easier and more convenient to operate and higher in mounting and dismounting efficiency; and the connecting position of the first side mold and the second side mold and the mounting position of the third side mold are adjustable, so that the lintel pouring mold can meet the pouring requirements of lintels of multiple sizes, and the applicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of concrete beam casting, in particular to a lintel casting mould and a use method thereof. Background Art

[0002] With the vigorous development of the construction industry, both the industry and society have higher requirements for construction. In the current building structure, masonry structure is an indispensable part, and the lintel above the door opening is an important construction part.

[0003] The traditional lintel construction method involves setting up wooden formwork on the masonry structure and then casting. However, installing and removing the formwork above the door opening carries high safety risks and is cumbersome. Furthermore, the masonry work must be suspended, significantly impacting the construction schedule. To address this, industry professionals have developed a prefabricated lintel solution, which involves casting the lintel on a ground foundation and then installing it over the door opening. However, the casting formwork still uses the traditional wooden formwork for connection, support, and fixing. Each time a lintel is cast, the formwork needs to be removed for demoulding. The installation and removal of traditional wooden formwork is cumbersome, labor-intensive, and time-consuming, and therefore does not effectively improve construction efficiency or reduce the workload of construction workers. Summary of the Invention

[0004] The purpose of the present invention is to provide a lintel casting mold and a method of using the same, so as to solve the deficiencies in the above-mentioned background technology.

[0005] The technical solution of the present invention is: a lintel casting mold, which includes a bottom mold, a first side mold constructed on the bottom mold, a second side mold and a third side mold; the first side mold and the second side mold are respectively L-shaped, and the concave directions of the two are opposite to each other to enclose a rectangular casting area with adjustable width; the third side mold is constructed in the rectangular casting area, and it can move along the length of the rectangular casting area to separate the rectangular casting area into at least a first rectangular partition and a second rectangular partition that are independent of each other.

[0006] Preferably, the second side formwork has the same configuration as the first side formwork, the first side formwork includes a long wall and a wide wall perpendicular to each other, the wide wall is provided with a plurality of rows of first connecting holes dispersed along the width of the rectangular casting area, the end of the long wall away from the wide wall is provided with a second connecting hole, the second connecting hole is in the same direction as the first connecting hole, and a connecting bolt is configured in the first connecting hole and / or the second connecting hole.

[0007] Preferably, the longitudinal wall includes a first steel formwork and a first wooden formwork, and the first steel formwork includes at least a first end wall, a second end wall and a third end wall connected in sequence; the first end wall and the third end wall are respectively perpendicular to the second end wall, and are respectively connected to the width wall located in the first side formwork and the second side formwork; the first wooden formwork is detachably connected to the second end wall.

[0008] Preferably, the top end of the longitudinal wall is provided with a plurality of rows of positioning cards dispersed along the longitudinal direction of the rectangular casting area, so as to limit the third side form to different positions in the longitudinal direction of the rectangular casting area.

[0009] Preferably, the third side mold includes a second steel mold frame and a second wooden mold, the second steel mold frame includes at least a fourth end wall and a fifth end wall perpendicular to each other, the fourth end wall slides against the top surface of the long wall, and the second wooden mold is detachably connected to the fifth end wall.

[0010] Preferably, the positioning card includes a first card segment and a second card segment, the radial dimension of the first card segment is larger than the radial dimension of the second card segment, the second card segment connects the first card segment and the long wall, and the top and side ends of the fourth end wall respectively abut the first card segment and the second card segment.

[0011] Preferably, the second steel formwork includes a sixth end wall, and the sixth end wall is located on both sides of the fifth end wall and slides against different longitudinal walls respectively.

[0012] Preferably, the first steel formwork and the first wooden formwork, and the second steel formwork and the second wooden formwork are connected respectively by self-tapping screws.

[0013] The technical solution of the present invention also includes: a method for using the above-mentioned lintel casting mold, which includes the steps of:

[0014] Place the first side form and the second side form on top of the bottom form, and adjust the distance between the first side form and the second side form according to the width of the lintel to be cast, so that the width of the rectangular casting area constructed by the first side form and the second side form are consistent with the width of the lintel to be cast;

[0015] Adjusting the position of the third side form in the rectangular casting area according to the length of the lintel to be cast, so that the length of the constructed first rectangular partition is consistent with the length of the lintel to be cast;

[0016] Applying a release agent, tying the lintel steel bars in the first rectangular partition, installing spacers to control the thickness of the steel bar protective layer, pouring concrete in batches and tamping it;

[0017] After the lintel solidifies, separate the first side form and the second side form, remove the third side form, and complete the demoulding.

[0018] The beneficial effects of the present invention are as follows: the first side form and the second side form are both prefabricated components, and installation and disassembly only require operating the connecting bolts. Compared with traditional wooden formwork support technology, the operation of this lintel casting mold is simpler and the installation and disassembly efficiency is higher; the connection position of the first side form and the second side form and the installation position of the third side form are both adjustable, so that the lintel casting mold can meet the casting needs of lintels of various sizes and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall structural diagram of an embodiment of the present invention;

[0020] Figure 2 is a structural diagram of the first side mold in an embodiment of the present invention;

[0021] Figure 3 This is a structural diagram of the first steel formwork in an embodiment of the present invention;

[0022] Figure 4 It is a structural diagram of the third side mold in an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Bottom mold;

[0025] 2. First side form; 21. Width wall; 211. First connecting hole; 22. Longitudinal wall; 221. First steel formwork; 221a. First end wall; 221b. Second end wall; 221c. Third end wall; 221d. Seventh end wall; 221e. Second connecting hole; 222. First wooden form;

[0026] 3. Second side mold;

[0027] 4. Third side form; 41. Second steel formwork; 411. Fourth end wall; 412. Fifth end wall; 413. Sixth end wall; 42. Second wooden formwork;

[0028] 5. Connecting bolt;

[0029] 6. Positioning card;

[0030] 7. Self-tapping screws;

[0031] 8. Rectangular casting area; 81. First rectangular partition; 82. Second rectangular partition. DETAILED DESCRIPTION

[0032] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0034] Reference Attachment Figure 1-4 An embodiment of the present invention provides a lintel casting mold, which includes a bottom mold 1, a first side mold 2, a second side mold 3 and a third side mold 4. The first side mold 2, the second side mold 3 and the third side mold 4 are all constructed on the bottom mold 1. The top projections of the first side mold 2 and the second side mold 3 are respectively L-shaped, and the concave directions of the two are opposite to each other to enclose a rectangular casting area 8 with adjustable width; the third side mold 4 is constructed in the rectangular casting area 8, and it can move along the length of the rectangular casting area 8 to separate the rectangular casting area 8 into a first rectangular partition 81 and a second rectangular partition 82 that are independent of each other.

[0035] When using the above-mentioned lintel casting mold for construction, first adjust the connection position of the first side mold 2 and the second side mold 3 according to the width specification of the lintel to be cast to change the width of the rectangular casting area 8; then adjust the position of the third side mold 4 in the rectangular casting area 8 according to the length specification of the lintel to be cast to change the area ratio of the first rectangular partition 81 and the second rectangular partition 82. In order to facilitate a concise and clear introduction of the present technical solution, this embodiment exemplarily selects the first rectangular partition 81 as the actual casting area of ​​the lintel. Therefore, when actually adjusting the third side mold 4, the length of the first rectangular partition 81 can be controlled to be the same as the length of the lintel to be cast; after applying a release agent to the inner sides of the first side mold 2, the second side mold 3 and the third side mold 4, the lintel can be cast. When removing the mold, the connection relationship between the first side mold 2 and the second side mold 3 is disassembled, and the first side mold 2, the second side mold 3 and the third side mold 4 are separated along the width, length or oblique direction (for example, diagonal direction) of the lintel to separate the lintel from the mold.

[0036] In this embodiment, the second side mold 3 has the same configuration as the first side mold 2. The first side mold 2 includes a long wall 22 and a wide wall 21 that are perpendicular to each other. The wide wall 21 is provided with several rows of first connecting holes 211, and the several rows of first connecting holes 211 are dispersed along the width of the rectangular casting area 8; the long wall 22 has an end fixedly connected to the wide wall 21 (the long wall 22 and the wide wall 21 here both refer to those in the first side mold 2), and an end away from the wide wall 21, and the end away from the wide wall 21 is provided with a second connecting hole 221e, and the second connecting hole 221e is in the same direction as the first connecting hole 211 (that is, parallel to the axis), and a connecting bolt 5 is configured in the first connecting hole 211 and / or the second connecting hole 221e, and the connecting bolt 5 is used to connect the second side mold 3.

[0037] Since the second side form 3 has the same configuration as the first side form 2 and is concavely opposite to each other, when the first side form 2 and the second side form 3 are actually connected to construct the rectangular casting area 8, the second connecting hole 221e in the first side form 2 corresponds to the first connecting hole 211 in the second side form 3, and the first connecting hole 211 in the first side form 2 corresponds to the second connecting hole 221e in the second side form 3. Then, according to the width of the lintel to be cast, the corresponding positions of the first connecting hole 211 and the second connecting hole 221e are adjusted, and the connecting bolt 5 is installed in the second connecting hole 221e and the first connecting hole 211 in the appropriate row.

[0038] Generally, the apertures of the first connection holes 211 and the second connection holes 221e are within 10 mm. Even if some columns of the first connection holes 211 correspond to the area where the lintel is actually cast due to width adjustment requirements, the degree of overflow of the actually cast concrete slurry from the first connection holes 211 is very low and can be ignored.

[0039] In the above technical solution, the first side form 2 and the second side form 3 are both prefabricated components, and installation and removal only require the operation of the connecting bolt 5. Compared with the traditional wooden formwork support technology, the operation of this lintel casting mold is simpler and the installation and removal efficiency is higher. According to the above technical solution, first, by adjusting the position correspondence between the first connecting hole 211 and the second connecting hole 221e, the first side form 2 and the second side form 3 are used to construct a rectangular casting area 8 that is compliant in width (referring to the width that is consistent with the width of the lintel to be cast) and larger in length. Then, according to the length specification of the lintel to be cast, the third side form 4 is adjusted to construct a first rectangular partition 81 that is compliant in width and length. This can ensure that the specifications of the cast lintel are accurate, and because the connection position of the first side form 2 and the second side form 3 and the installation position of the third side form 4 are adjustable, the lintel casting mold can meet the casting needs of lintels of various sizes and has strong applicability.

[0040] Reference Attachment Figure 2The width wall 21 can be made of a steel plate structure and welded to the end of the long wall 22 where the second connecting hole 221e is not opened; the long wall 22 of the first side mold 2 can include a first steel mold frame 221 and a first wooden mold 222, and the first steel mold frame 221 includes at least a first end wall 221a, a second end wall 221b and a third end wall 221c connected in sequence, and the first end wall 221a and the third end wall 221c are respectively perpendicular to the second end wall 221b, and the first end wall 221a is used to be welded and fixed to the width wall 21 of the first side mold 2, and the third end wall 221c is used to open a second connecting hole 221e to connect to the width wall 21 in the second side mold 3; the first wooden mold 222 is detachably connected to the second end wall 221b. In this way, the first end wall 221a and the third end wall 221c are respectively parallel to different width walls 21, which can increase the contact area with the width wall 21 and make the connection more stable; the second end wall 221b is parallel to the first wooden mold 222, which can increase the contact area with the first wooden mold 222 and make the connection more stable.

[0041] Reference Attachment Figure 4 , the third side mold 4 includes a second steel mold frame 41 and a second wooden mold 42. The second steel mold frame 41 includes at least a fourth end wall 411 and a fifth end wall 412 that are perpendicular to each other. The fourth end wall 411 slides against the top surface of the long wall 22 and can be fixed by the positioning card 6 located at the top of the long wall 22. The second wooden mold 42 is detachably connected to the fifth end wall 412. In this way, the fourth end wall 411 is parallel to the top surface of the long wall 22, which can increase the contact area with the long wall 22, making the connection more stable and the sliding smoother; the fifth end wall 412 is parallel to the second wooden mold 42, which can increase the contact area with the second wooden mold 42, making the connection more stable. And, as shown in the attached Figure 1 As shown, the first wooden formwork 222 is perpendicular to the width wall 21, and the second wooden formwork 42 is parallel to the width wall 21, so as to enclose a first rectangular partition 81 for pouring the lintel.

[0042] As mentioned above, the second end wall 221b is connected to the first wooden form 222, and the fifth end wall 412 is connected to the second wooden form 42, respectively, via self-tapping screws 7. After the lintel casting mold is used for a period of time, if the first wooden form 222 and the second wooden form 42 become worn or need to be replaced for other reasons, the self-tapping screws 7 can be removed to quickly replace the wooden form. The aforementioned "other circumstances" may also include situations where the width of the second wooden form 42 needs to be adaptively adjusted due to changes in the width of the rectangular casting area 8. The second steel formwork 41 serves to position and reinforce the second wooden form 42, but the second wooden form 42 does not necessarily have to strictly correspond to a specific dimension on the second steel formwork 41. As long as the second wooden form 42 can be mounted on the second steel formwork 41 via self-tapping screws 7 and the second steel formwork 41 can ensure the support stability of the second wooden form 42, it is sufficient. In other words, after the second steel formwork 41 is equipped according to the above principles, the second wooden form 42 can be selected from different sizes according to different casting requirements and can be quickly replaced on the second steel formwork 41.

[0043] The first steel formwork 221 and the second steel formwork 41 can be welded and constructed using angle steel commonly found on construction sites, making them easy to source and simple to manufacture. Furthermore, the angle steels can overlap partially, resulting in a more stable connection. Furthermore, due to the use of angle steel, the second steel formwork 41 has a sixth end wall 413 located on either side of the fifth end wall 412. When the width of the selected second wooden formwork 42 is exactly the same as the spacing between the two sets of sixth end walls 413, the two sets of sixth end walls 413 can slide against different first wooden formworks 222. This creates a larger contact area between the sixth end wall 413 and the first wooden formwork 222, resulting in smoother sliding. Furthermore, the contact area between the bottoms of the fifth and sixth end walls 412, 413, and the bottom mold 1 increases, making the support more stable. Correspondingly, by using angle steel, the first steel formwork 221 can also have a seventh end wall 221d, and the seventh end wall 221d is respectively located at the top and bottom ends of the second end wall 221b. The seventh end wall 221d located at the bottom makes the support of the long wall 22 more stable, and the seventh end wall 221d located at the top slides into contact with the fourth end wall 411, which makes the support of the fourth end wall 411 more stable and makes the sliding of the fourth end wall 411 smoother.

[0044] Reference Attachment Figure 1 The above-mentioned positioning cards 6 for fixing the third side form 4 are constructed in several rows on the seventh end wall 221d located at the top, and several rows of positioning cards 6 are dispersed along the length of the rectangular casting area 8 to limit the third side form 4 to different positions in the length of the rectangular casting area 8.

[0045] The positioning card 6 includes a first card segment and a second card segment. The radial dimension of the first card segment is larger than the radial dimension of the second card segment. The second card segment connects the first card segment and the seventh end wall 221d. The top and side ends of the fourth end wall 411 respectively abut the first card segment and the second card segment.

[0046] During implementation, the positioning clip 6 can be constructed using bolts or self-tapping screws commonly found on construction sites. Of course, to facilitate the installation and removal of the connecting bolt 5 and the positioning of the positioning clip 6 to the fourth end wall 411, auxiliary structures can be adaptively welded to the ends of the connecting bolt 5 and the positioning clip 6, for example, a rod structure (such as a short steel bar) perpendicular to the end of the connecting bolt 5 can be welded to facilitate the screwing of the connecting bolt 5. For example, a radially larger ring plate or plate structure can be welded to the second clamping section of the positioning clip 6 to increase the contact area with the top of the fourth end wall 411 and improve the limiting effect.

[0047] In this embodiment, the bottom mold 1 can be made of a polyethylene plastic bottom mold 1 with a certain thickness, and its top projection area should be larger than the area of ​​the rectangular casting area 8.

[0048] The above-mentioned first side form 2, second side form 3 and third side form 4 are all made of steel materials, and their own weight is relatively large, so the friction with the bottom form 1 is also relatively large. The height of the lintel is generally 150mm-200mm, and the width is generally 150mm, 240mm, and 370mm. The device is flat as a whole, with a low center of gravity and strong overall stability. It is not easy to disturb the side forms during pouring. Therefore, the above-mentioned first side form 2, second side form 3 and third side form 4 can be directly placed on the bottom form 1.

[0049] Taking the acquisition of materials at a construction site as an example, the structure and use of the lintel casting mold provided in this embodiment are as follows:

[0050] (1) Use galvanized angle steel to splice and weld two sets of first steel formwork frames 221, use steel plates as width walls 21, and weld them to the long ends of the two sets of first steel formwork frames 221. Note: Only one end of each set of first steel formwork frames 221 is welded with the width wall 21;

[0051] (2) Drill a first connecting hole 211 on the wide wall 21, drill a second connecting hole 221e at the end of the first steel formwork 221 where the wide wall 21 is not welded, and weld the nut in the connecting bolt 5 to the second connecting hole 221e. Note: The nut should be coaxial with the second connecting hole 221e;

[0052] (3) Using self-tapping screws 7, the first wooden mold 222 is fixed to the first steel mold frame 221 to obtain the first side mold 2 and the second side mold 3;

[0053] (4) Drive a self-tapping screw 7 into the top of the first steel formwork 221, and ensure that the self-tapping screw 7 is exposed 5mm to form a positioning card 6;

[0054] (5) Use galvanized angle steel to splice and weld to construct the second steel formwork 41. According to the width of the lintel to be cast, select the size of the second wooden formwork 42. Use self-tapping screws 7 to fix the second wooden formwork 42 to the second steel formwork 41 to obtain the third side formwork 4.

[0055] (6) Place the bottom form 1 on the flat base, and place the first side form 2 and the second side form 3 on the bottom form 1. Determine the spacing between the two sets of first wooden forms 222 according to the width of the lintel to be cast. Based on this, adjust the corresponding relationship between the first connecting hole 211 and the second connecting hole 221e. Then, use the connecting bolt 5 to connect and tighten the first side form 2 and the second side form 3 so that the width of the constructed rectangular casting area 8 is consistent with the width of the lintel to be cast.

[0056] (7) Determine the distance between the width wall 21 and the third side form 4 based on the length of the lintel to be cast. Based on this, adjust the position of the third side form 4 and restrict the third side form 4 to the corresponding positioning clip 6 so that the width and length of the constructed first rectangular partition 81 are consistent with the size of the lintel to be cast;

[0057] (8) Applying a release agent, tying the lintel steel bars in the first rectangular partition 81, installing spacers to control the thickness of the steel bar protective layer, pouring concrete in batches and tamping it;

[0058] (9) After the lintel solidifies, remove the connecting bolt 5, separate the first side form 2 and the second side form 3, remove the third side form 4, complete the demoulding, and clean the adjacent concrete surface of the lintel casting mold for next use.

[0059] Water the lintel regularly for maintenance. After watering, cover the lintel with polyethylene plastic film in time to reduce water loss, thereby reducing the frequency of maintenance. Conduct compressive strength tests on the test blocks with the same conditions retained during the lintel casting process to determine whether the lintel has reached the design strength. Once the design strength is reached, the lintel can be moved to the designated location and placed in categories for subsequent masonry use.

[0060] Compared with the prior art, the beneficial effects of the present invention include at least: the first side form 2 and the second side form 3 are both prefabricated components, and installation and disassembly only requires operating the connecting bolt 5. Compared with the traditional wooden formwork support technology, the operation of this lintel casting mold is simpler and the installation and disassembly efficiency is higher; the connection position of the first side form 2 and the second side form 3 and the installation position of the third side form 4 are both adjustable, so that the lintel casting mold can meet the casting needs of lintels of more sizes and has strong applicability.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lintel casting mold, characterized in that: It includes a bottom mold, a first side mold, a second side mold and a third side mold constructed on the bottom mold; the first side mold and the second side mold are respectively L-shaped, and the concave directions of the two are opposite to each other to enclose a rectangular casting area with adjustable width; the third side mold is constructed in the rectangular casting area, and can move along the length of the rectangular casting area to separate the rectangular casting area into at least a first rectangular partition and a second rectangular partition that are independent of each other.

2. The lintel casting mold according to claim 1, characterized in that: The second side mold has the same configuration as the first side mold. The first side mold includes a long wall and a wide wall that are perpendicular to each other. The wide wall is provided with a plurality of rows of first connecting holes dispersed along the width of the rectangular casting area. The end of the long wall away from the wide wall is provided with a second connecting hole. The second connecting hole is in the same direction as the first connecting hole. A connecting bolt is configured in the first connecting hole and / or the second connecting hole.

3. The lintel casting mold according to claim 2, characterized in that: The longitudinal wall includes a first steel formwork and a first wooden formwork, and the first steel formwork includes at least a first end wall, a second end wall and a third end wall connected in sequence; the first end wall and the third end wall are respectively perpendicular to the second end wall, and are respectively connected to the width wall located in the first side formwork and the second side formwork; the first wooden formwork is detachably connected to the second end wall.

4. The lintel casting mold according to claim 2 or 3, characterized in that: The top end of the longitudinal wall is provided with a plurality of rows of positioning cards dispersed along the longitudinal direction of the rectangular casting area, so as to limit the third side form to different longitudinal positions of the rectangular casting area.

5. The lintel casting mold according to claim 4, characterized in that: The third side mold includes a second steel mold frame and a second wooden mold, the second steel mold frame includes at least a fourth end wall and a fifth end wall perpendicular to each other, the fourth end wall slides against the top surface of the long wall, and the second wooden mold is detachably connected to the fifth end wall.

6. The lintel casting mold according to claim 5, characterized in that: The positioning card includes a first card segment and a second card segment, the radial dimension of the first card segment is larger than the radial dimension of the second card segment, the second card segment connects the first card segment and the long wall, and the top and side ends of the fourth end wall respectively abut the first card segment and the second card segment.

7. The lintel casting mold according to claim 5 or 6, characterized in that: The second steel formwork includes a sixth end wall, which is located on both sides of the fifth end wall and slides against different longitudinal walls respectively.

8. The lintel casting mold according to claim 7, characterized in that: The first steel formwork and the first wooden formwork, as well as the second steel formwork and the second wooden formwork are connected respectively by self-tapping screws.

9. The method for using the lintel casting mold according to any one of claims 1 to 8, characterized in that: Including steps: Place the first side form and the second side form on top of the bottom form, and adjust the distance between the first side form and the second side form according to the width of the lintel to be cast, so that the width of the rectangular casting area constructed by the first side form and the second side form are consistent with the width of the lintel to be cast; Adjusting the position of the third side form in the rectangular casting area according to the length of the lintel to be cast, so that the length of the constructed first rectangular partition is consistent with the length of the lintel to be cast; Applying a release agent, tying the lintel steel bars in the first rectangular partition, installing spacers to control the thickness of the steel bar protective layer, pouring concrete in batches and tamping it; After the lintel solidifies, separate the first side form and the second side form, remove the third side form, and complete the demoulding.

Images