An inner mold suspension and lifting device for concrete prefabricated ventilation panels

Abstract

The present invention discloses an inner mold suspension and lifting device for a prefabricated concrete ventilation panel, relates to the field of production of prefabricated concrete ventilation panels, and solves the problem that the existing inner mold suspension device is difficult to demold the inner mold from the ventilation panel. The device comprises: a mounting bracket and a winder installed on the inner side of the mounting bracket, a lifting plate and three inner mold bodies are arranged on the outer side of the mounting bracket, a lifting rope is installed between the top of the lifting plate and the winder, and a pulley frame is fixedly installed on the top of the mounting bracket; the device also comprises: a demolding mechanism, which separates and demolds the inner mold body from the ventilation hole of the ventilation panel, the demolding mechanism is installed on the inner side of the inner mold body, and the demolding mechanism comprises a template arranged on the outer side of the inner mold body; the present invention can retract the template into the inner side of the inner mold body through the demolding mechanism, so that the template is directly separated from the inner side of the ventilation hole of the ventilation panel, thereby realizing the demolding of the template from the ventilation hole on the ventilation panel, reducing the wear of the inner mold body on the ventilation hole, and achieving the effect of safe demolding.

Description

Technical Field

[0001] The invention relates to the production field of prefabricated concrete ventilation panels, in particular to an inner mold suspension and lifting device for prefabricated concrete ventilation panels. Background Art

[0002] Precast concrete ventilation panels are a type of concrete component that is prefabricated in a factory or on-site, with ventilation ducts or cavities inside. They are mainly used in areas that require natural or mechanical ventilation, such as building exterior walls, basements, underground garages, and industrial plants. During production, an outer mold and an inner mold are required to be used in combination. The outer mold determines the outer dimensions of the ventilation panel, and the inner mold is used to form the ventilation ducts.

[0003] After the concrete is poured, the inner mold needs to be removed from the hardening concrete during the initial setting to final setting stage. The mechanical suspension can maintain vertical or horizontal uniform motion to ensure that the channel shape is regular and the size is accurate, ensure uniform force, and prevent concrete cracking. When demolding the inner mold, the existing suspension device basically adopts a pulling method to demold the inner mold and the concrete prefabricated ventilation plate. However, after the concrete hardens, due to the small gap between the inner mold and the ventilation holes of the concrete prefabricated ventilation plate, the ventilation holes will be pulled during the removal of the inner mold. It needs to be lifted slowly and uniformly to remove the inner mold from the ventilation holes, and the demolding efficiency is poor. Summary of the Invention

[0004] The object of the present invention is to provide an inner mold suspension and lifting device for a prefabricated concrete ventilation panel to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for suspending and lifting an inner mold of a prefabricated concrete ventilation panel comprises: a mounting bracket and a reel fixedly mounted on the inner side of the mounting bracket, a lifting plate and three inner mold bodies equidistantly distributed are arranged on the outer side of the mounting bracket, a suspension rope is installed between the top of the lifting plate and the reel, and a pulley frame matched with the suspension rope is fixedly mounted on the top of the mounting bracket; the device also comprises: a demoulding mechanism for separating and demoulding the inner mold body from the ventilation hole of the ventilation panel, the demoulding mechanism being mounted on the inner side of the inner mold body, the demoulding mechanism comprising a template arranged on the outer side of the inner mold body, the template being retractable into the inner side of the inner mold body, and the template being in an arc-shaped structure. The inner mold body is in an arc structure, so that the template and the inner mold body form a cylindrical structure; the fixed plate mechanism enables the lifting plate to be synchronously docked with the three inner mold bodies, and the fixed plate mechanism is installed on the outside of the lifting plate. The fixed plate mechanism includes three positioning plates equidistantly fixed on the bottom of the lifting plate, and the positioning plates can fix the ends of the inner mold body; the quick-release mechanism is used to synchronously retract the three templates into the inner mold body, and the quick-release mechanism is installed on the outside of the lifting plate. The quick-release mechanism includes three abutment plates equidistantly arranged on the outside of the lifting plate, and the lifting plate can move the three templates separately through the three abutment plates.

[0007] Preferably, the demolding mechanism also includes two support plates symmetrically fixedly installed on the inner side of the template, the inner side of the inner mold body is provided with a U-shaped strip, and a plurality of equidistantly distributed limit brackets are fixedly installed on the side of the U-shaped strip close to the template, and the limit brackets are fixedly installed on the inner side of the support plate away from the template, and two symmetrically distributed fixed plates are fixedly installed on the inner side of the inner mold body, and an adjusting rod is rotatably installed between the two fixing plates, and a plurality of equidistantly distributed push plates are fixedly installed on the outer side of the adjusting rod, and the push plate is hingedly equipped with an L-shaped connecting rod at one end away from the adjusting rod, and the L-shaped connecting rod is hingedly equipped with one end away from the push plate on the side of the U-shaped strip away from the limit bracket, and a plurality of equidistantly distributed sliding rods are fixedly installed between the template and the U-shaped strip, and a limiting plate is slidably installed on the outer side of the sliding rod, and the limiting plate is fixedly installed on the inner side of the inner mold body.

[0008] Preferably, the fixed plate mechanism also includes two mounting plates symmetrically arranged on the outside of the positioning plate, and two symmetrically distributed clamping plates are fixedly installed on the side of the mounting plate away from the positioning plate, and positioning strips are fixedly installed at both ends of the inner mold body, and a rotating rod is rotatably installed on the inner side of the positioning plate, and a gear is fixedly installed on the outer side of the rotating rod, and two rack plates symmetrically distributed in the center are slidably installed on the inner side of the positioning plate, one end of the two rack plates is fixedly connected to the two mounting plates respectively, and the rotating rod extends above the lifting plate, and a transmission wheel located on the inner side of the lifting plate is fixedly installed on the outer side of the rotating rod, and a synchronous toothed belt is rotatably installed between the three transmission wheels, and two symmetrically distributed support rods are fixedly installed on the side of the mounting plate close to the positioning plate, and a sliding cavity is opened on the inner side of the positioning plate for the support rod to limit the sliding of

[0009] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is, a bottom of described sliding panel withstands on the backrest, and the interlocking structure is hinged on the base plate, is fixed with a backrest, and an end of sliding panel withstands on the backrest.

[0010] Preferably, an arc inner support is fixedly installed on the inner side of the inner mold body, and two ends of the limiting bracket are respectively in contact with two ends of the arc inner support.

[0011] Preferably, a positioning spring is provided on the outer side of the slide rod, and the positioning spring is fixedly installed between the template and the limiting plate.

[0012] Preferably, a handwheel is fixedly mounted on one end of the rotating rod away from the gear.

[0013] Preferably, two symmetrically distributed T-shaped sliding blocks are fixedly mounted on the outer side of the support rod, and a long groove for limiting the sliding of the T-shaped sliding blocks is opened on the outer side of the positioning plate.

[0014] Preferably, a magnet block is fixedly mounted on one side of the mounting plate close to the clamping plate, and the magnet block is located between the two clamping plates.

[0015] Preferably, the end of the prismatic insertion rod away from the rotating column is a square pyramid structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can retract the template into the inner side of the inner mold body through the demoulding mechanism, so that the template can be directly separated from the inner side of the ventilation hole of the ventilation plate, thereby realizing the demoulding of the template and the ventilation hole on the ventilation plate, reducing the wear of the inner mold body on the ventilation hole, and solving the problem of the inner mold body pulling the inner side of the ventilation hole, thereby achieving the effect of safe demoulding.

[0018] 2. The present invention uses a fixed plate mechanism to enable the two clamping plates on the mounting plate to be sleeved on the outside of the positioning strips when the hanging plate is close to the top of the three inner mold bodies, thereby realizing synchronous positioning of the three inner mold bodies, facilitating synchronous lifting and demoulding of the three inner mold bodies, thereby improving the convenience of hanging and lifting the inner mold bodies.

[0019] 3. The present invention uses a quick-release mechanism, which enables the prismatic insert rod to be inserted into the prismatic slot of the adjusting rod when the card plate is docked with the positioning card strip, and the V-shaped plate pushes the abutment plate to swing, so that the prismatic insert rod drives the adjusting rod to rotate, thereby realizing the synchronous movement of the three templates. The three templates can then be synchronously received into the corresponding inner mold body, thereby improving the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the inner mold body and template structure in the present invention;

[0022] Figure 3 Schematic diagram of the U-shaped bar and the limiting bracket structure in the present invention;

[0023] Figure 4 Schematic diagram of the L-shaped connecting rod and push plate structure in the present invention;

[0024] Figure 5 This is a schematic diagram of the positioning card strip and card plate structure in the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the lifting plate and the transmission wheel in the present invention;

[0026] Figure 7 This is a schematic diagram of the positioning cylinder and rotating column structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the abutment plate and the V-shaped plate in the present invention.

[0028] Figure: 1. Mounting bracket; 2. Winder; 3. Inner mold body; 4. Lifting plate; 5. Lifting rope; 6. Pulley frame; 7. Template; 8. Positioning plate; 9. Stop plate; 10. Support plate; 11. U-shaped bar; 12. Limiting bracket; 13. Fixing plate; 14. Adjusting rod; 15. Push plate; 16. L-shaped connecting rod; 17. Sliding rod; 18. Limiting plate; 19. Mounting plate; 20. Clamping plate; 21. Positioning clamping strip; 22. Rotating rod ; 23. Gear; 24. Rack plate; 25. Drive wheel; 26. Synchronous toothed belt; 27. Support rod; 28. Positioning slide rail; 29. ​​Guide slide; 30. Rotating column; 31. Positioning cylinder; 32. Fixed block; 33. Slip ring; 34. Sleeve; 35. Arc spring; 36. V-shaped plate; 37. Prismatic insert rod; 38. Arc inner support; 39. Positioning spring; 40. Handwheel; 41. T-shaped slider; 42. Magnet block. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0030] Example 1: Please refer to Figures 1-8 The figure shows an inner mold suspension and lifting device for a prefabricated concrete ventilation panel, comprising a mounting bracket 1 and a winder 2 fixedly mounted on the inner side of the mounting bracket 1, a lifting plate 4 and three inner mold bodies 3 equidistantly distributed are provided on the outer side of the mounting bracket 1, and the lifting plate 4 is located above the inner mold body 3, a lifting rope 5 is installed between the top of the lifting plate 4 and the winder 2, and a pulley frame 6 matched with the lifting rope 5 is fixedly mounted on the top of the mounting bracket 1, so that the winder 2 can move along the outer side of the pulley frame 6 through the lifting rope 5, and the three inner mold bodies 3 are suspended and lifted by the lifting plate 4, so as to facilitate the demoulding of the inner mold body 3 and the concrete ventilation panel; it also includes: a demoulding mechanism, which separates and demoulds the inner mold body 3 from the ventilation holes of the ventilation panel, and the demoulding mechanism is installed on the inner side of the inner mold body 3.

[0031] The demoulding mechanism includes a template 7 arranged on the outside of the inner mold body 3, the template 7 can be retracted into the inner side of the inner mold body 3, the template 7 is an arc-shaped structure, and the inner mold body 3 is an arc structure, so that the template 7 and the inner mold body 3 form a cylindrical structure, and the demoulding mechanism also includes two symmetrical support plates 10 fixedly installed on the inner side of the template 7, and a U-shaped strip 11 is provided on the inner side of the inner mold body 3. A plurality of equally distributed limit brackets 12 are fixedly installed on the side of the U-shaped strip 11 close to the template 7. The limit brackets 12 are fixedly installed on the support plates. 10 is away from the inner side of the template 7, and two symmetrically distributed fixed plates 13 are fixedly installed on the inner side of the inner mold body 3. An adjusting rod 14 is rotatably installed between the two fixed plates 13. A plurality of equally distributed push plates 15 are fixedly installed on the outer side of the adjusting rod 14. The push plate 15 is hingedly assembled with an L-shaped connecting rod 16 at one end away from the adjusting rod 14. The end of the L-shaped connecting rod 16 away from the push plate 15 is hingedly assembled on the side of the U-shaped bar 11 away from the limit bracket 12, so that when the adjusting rod 14 rotates, it can be pulled by the push plate 15. The L-shaped connecting rod 16 swings, and the L-shaped connecting rod 16 pulls the U-shaped bar 11 to move. A plurality of sliding rods 17 with equal distances are fixedly installed between the template 7 and the U-shaped bar 11. The outer side of the sliding rod 17 is slidably installed with a limit plate 18. The limit plate 18 is fixedly installed on the inner side of the inner mold body 3, so that the U-shaped bar 11 can drive the sliding rod 17 to move along the inner side of the limit plate 18, providing a guide for the movement of the U-shaped bar 11, making it easy to put the template 7 into the inner side of the inner mold body 3, and realize the demoulding of the template 7 and the ventilation holes on the ventilation plate, reducing The inner mold body 3 reduces the wear of the ventilation holes and improves the demoulding efficiency. An arc inner support 38 is fixedly installed on the inner side of the inner mold body 3. The two ends of the limiting bracket 12 are respectively in contact with the two ends of the arc inner support 38, so that the arc inner support 38 increases the overall bearing capacity of the inner mold body 3 and provides a limit for the movement of the limiting bracket 12. A positioning spring 39 is provided on the outer side of the slide rod 17. The positioning spring 39 is fixedly installed between the template 7 and the limiting plate 18. The positioning spring 39 can be used to push the template 7 to align with the end of the inner mold body 3.

[0032] Example 2: Please refer to Figure 2-Figure 7, this embodiment further explains the first embodiment. The fixed plate mechanism in the figure includes three equidistant fixed positioning plates 8 installed at the bottom of the lifting plate 4. The positioning plates 8 can fix the ends of the inner mold body 3. The fixed plate mechanism also includes two symmetrically arranged mounting plates 19 on the outside of the positioning plates 8. The mounting plate 19 is fixedly installed with two symmetrically distributed clamping plates 20 on the side away from the positioning plates 8. The two ends of the inner mold body 3 are fixedly installed with positioning clamping strips 21. The inner side of the positioning plate 8 is rotatably installed with a rotating rod 22. The rotating rod 22 A gear 23 is fixedly installed on the outside of the positioning plate 8, and two rack plates 24 with a central symmetrical distribution are slidably installed on the inner side of the positioning plate 8. When the rotating rod 22 rotates, the gear 23 can drive the two rack plates 24 to move in opposite directions. One end of the two rack plates 24 is fixedly connected to the two mounting plates 19, so that the two rack plates 24 can push the two mounting plates 19 away from each other. The two clamping plates 20 on the mounting plate 19 can be clamped into the positioning clamping strip 21 at one end of the inner mold body 3 to realize the positioning of the inner mold body 3. The rotating rod 22 extends to the top of the lifting plate 4. The outer side of the rotating rod 22 is fixedly installed with a transmission wheel 25 located on the inner side of the lifting plate 4. A synchronous toothed belt 26 is installed between the three transmission wheels 25. When any rotating rod 22 rotates, the transmission wheel 25 on the outer side of the rotating rod 22 can cooperate with the synchronous toothed belt 26 to drive the other two rotating rods 22 to rotate synchronously. Two symmetrically distributed support rods 27 are fixedly installed on the side of the mounting plate 19 close to the positioning plate 8. A sliding cavity is opened on the inner side of the positioning plate 8 for the support rods 27 to slide in a limited position. The mounting plate 19 provides support, and a handwheel 40 is fixedly installed at the end of the rotating rod 22 away from the gear 23. The rotating rod 22 can be rotated by the handwheel 40 to improve the convenience of adjusting the rotation of the rotating rod 22. Two symmetrically distributed T-shaped sliders 41 are fixedly installed on the outer side of the support rod 27. A long groove is provided on the outer side of the positioning plate 8 for the limited sliding of the T-shaped slider 41, which improves the smooth movement of the support rod 27. When the support rod 27 is under pressure, the T-shaped slider 41 can rest against the outer side of the positioning plate 8 to provide support for the support rod 27.

[0033] Example 3: Please refer to Figure 2-Figure 8, this embodiment is further explained for other embodiments. The quick-release mechanism in the figure includes three abutment plates 9 equidistantly arranged on the outside of the lifting plate 4. The lifting plate 4 can move the three templates 7 respectively through the three abutment plates 9. The quick-release mechanism also includes a positioning slide 28 fixedly installed on the inner side of the mounting bracket 1. A guide slide 29 is slidably installed on the outer side of the positioning slide 28. One side of the guide slide 29 is fixedly installed on the outer side of the lifting plate 4, so that when the lifting plate 4 moves, it can drive the guide slide 29 to move along the outer side of the positioning slide 28, thereby improving the stability of the movement of the lifting plate 4. The top of the abutment plate 9 is fixed A rotating column 30 is fixedly installed, and a positioning cylinder 31 is provided on the outside of the rotating column 30. The positioning cylinder 31 is fixedly installed at the bottom of the guide slide 29. Two fixed blocks 32 are fixedly installed on the inside of the positioning cylinder 31 and are symmetrically distributed. A slip ring 33 is fixedly installed between the two fixed blocks 32. Two symmetrically distributed sliding sleeves 34 are slidably installed on the outside of the slip ring 33. The sliding sleeve 34 is fixedly installed on the outside of the rotating column 30. When the rotating column 30 rotates, it can drive the sliding sleeve 34 to move along the outside of the slip ring 33. Two symmetrically distributed arc springs 35 are provided on the outside of the slip ring 33, and the arc springs 35 are fixedly installed on the outside of the rotating column 30. It is fixedly installed between the sliding sleeve 34 and the fixed block 32, so that when the rotating column 30 rotates, the arc spring 35 can be compressed. A V-shaped plate 36 is provided on the outside of the support plate 9, and the V-shaped plate 36 is fixedly installed on the outside of the adjacent support rod 27, so that when the support rod 27 moves, it can drive the V-shaped plate 36 to move synchronously, so that the V-shaped plate 36 pushes the support plate 9 to move, and the support plate 9 can drive the rotating column 30 to rotate. A prismatic insertion rod 37 is fixedly installed on the bottom of the rotating column 30, and both ends of the adjusting rod 14 are provided with a prismatic groove for the limiting insertion of the prismatic insertion rod 37. The lifting plate 4 can insert the prismatic insertion rod 37 into the adjusting rod When the rotating column 30 rotates in the prismatic groove of the section rod 14, the prismatic insertion rod 37 can drive the adjusting rod 14 to rotate, thereby realizing the synchronous movement of the three templates 7. A magnet block 42 is fixedly installed on the side of the mounting plate 19 close to the card plate 20. The magnet block 42 is located between the two card plates 20, so that when the card plate 20 is against the positioning card strip 21, the magnet block 42 can be adsorbed on the positioning card strip 21, which is convenient for the two card plates 20 and the positioning card strip 21 to be smoothly positioned. The end of the prismatic insertion rod 37 away from the rotating column 30 is a square prism structure, which is convenient for the prismatic insertion rod 37 to be inserted into the prismatic slot of the adjusting rod 14.

[0034] Working principle: First, the staff starts the winder 2, and the winder 2 lowers the lifting plate 4 through the lifting rope 5, so that the lifting plate 4 is close to the top of the three inner mold bodies 3, and the lifting plate 4 drives the guide slide 29 to move along the outer side of the positioning slide rail 28, and the positioning slide rail 28 drives the positioning cylinder 31 to move, and the positioning cylinder 31 drives the sliding sleeve 34 to move downward through the slip ring 33 on the fixed block 32, so that the sliding sleeve 34 drives the rotating column 30 to move downward synchronously, and the prismatic insert rod 37 at the bottom of the rotating column 30 is inserted into the prismatic slot of the adjusting rod 14, and the three positioning plates 8 at the bottom of the lifting plate 4 are distributed close to each other. Near the positioning strips 21 of the three inner mold bodies 3, at this time, the staff rotates the handwheel 40 on any one of the rotating rods 22, so that the rotating rod 22 drives the other two rotating rods 22 to rotate synchronously through the transmission wheel 25 and the synchronous toothed belt 26 on its outer side. The rotating rod 22 drives the gear 23 to rotate, so that the gear 23 drives the two rack plates 24 to move in opposite directions. The two rack plates 24 push the corresponding mounting plates 19 to move, so that the two card plates 20 on the mounting plate 19 are against the outer side of the positioning strip 21, thereby realizing the positioning of the inner mold body 3. At the same time, the mounting plate 19 drives the support rod 27 The support rod 27 drives the V-shaped plate 36 to move synchronously along the sliding cavity of the positioning plate 8, so that the V-shaped plate 36 pushes the abutment plate 9 on the outside of the rotating column 30 to swing, so that the abutment plate 9 drives the sliding sleeve 34 on the rotating column 30 to move along the outside of the slip ring 33 and compresses the arc spring 35. The rotating column 30 can drive the adjusting rod 14 to rotate through the prismatic insert rod 37, so that the adjusting rod 14 drives the push plate 15 to swing, and the push plate 15 pulls the U-shaped bar 11 to move through the L-shaped connecting rod 16. The U-shaped bar 11 pulls the template 7 to move through the slide rod 17 and the limit bracket 12, and the slide rod 17 can It can move along the inner side of the limit plate 18 and compress the positioning spring 39, so that the template 7 is retracted into the inner side of the inner mold body 3, and the template 7 is demoulded from the ventilation hole on the concrete ventilation plate, so that there is looseness between the inner mold body 3 and the ventilation hole. Finally, the staff starts the winder 2 again, so that the winder 2 pulls the lifting plate 4 upward through the lifting rope 5, and the lifting plate 4 can lift the inner mold body 3 through the clamping plate 20, so that the inner mold body 3 and the ventilation hole are quickly demoulded, thereby achieving the effect of safe demoulding and improving the demoulding efficiency between the inner mold body 3 and the ventilation hole.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An inner mold suspension and lifting device for a prefabricated concrete ventilation panel, characterized in that: include: A mounting bracket (1) and a winder (2) mounted on the inner side of the mounting bracket (1); a lifting plate (4) and three inner mold bodies (3) are provided on the outer side of the mounting bracket (1); a suspension rope (5) is installed between the top of the lifting plate (4) and the winder (2); and a pulley frame (6) is fixedly mounted on the top of the mounting bracket (1); Also includes: A demoulding mechanism separates and demoulds the inner mold body (3) from the ventilation holes of the ventilation plate, the demoulding mechanism being installed on the inner side of the inner mold body (3), the demoulding mechanism comprising a template (7) arranged on the outer side of the inner mold body (3), the template (7) being retractable into the inner side of the inner mold body (3), the demoulding mechanism further comprising two support plates (10) installed on the inner side of the template (7), the inner side of the inner mold body (3) being provided with a U-shaped strip (11), a plurality of equally spaced limiting brackets (12) being fixedly installed on one side of the U-shaped strip (11), the limiting brackets (12) being fixedly installed on the inner side of the support plates (10) Two fixed plates (13) are installed on the inner side of the inner mold body (3), an adjusting rod (14) is rotatably installed between the two fixed plates (13), a plurality of push plates (15) are fixedly installed on the outer side of the adjusting rod (14), one end of the push plate (15) is hingedly assembled with an L-shaped connecting rod (16), one end of the L-shaped connecting rod (16) is hingedly assembled on one side of the U-shaped strip (11), a plurality of sliding rods (17) are fixedly installed between the template (7) and the U-shaped strip (11), a limit plate (18) is slidably installed on the outer side of the sliding rod (17), and the limit plate (18) is installed on the inner side of the inner mold body (3); A fixed plate mechanism enables the lifting plate (4) to be synchronously docked with the three inner mold bodies (3); the fixed plate mechanism is installed on the outside of the lifting plate (4); the fixed plate mechanism comprises three positioning plates (8) installed on the bottom of the lifting plate (4); the positioning plates (8) can fix the ends of the inner mold bodies (3); A quick-release mechanism is used for synchronously receiving the three templates (7) into the inner mold body (3). The quick-release mechanism is installed on the outside of the lifting plate (4). The quick-release mechanism includes three abutment plates (9) arranged on the outside of the lifting plate (4). The lifting plate (4) can move the three templates (7) respectively through the three abutment plates (9).

2. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 1, characterized in that: The fixed plate mechanism also includes two mounting plates (19) arranged on the outside of the positioning plate (8), two symmetrically distributed card plates (20) are fixedly installed on one side of the mounting plate (19), and positioning card strips (21) are fixedly installed at both ends of the inner mold body (3). A rotating rod (22) is rotatably installed on the inner side of the positioning plate (8), and a gear (23) is installed on the outer side of the rotating rod (22). Two rack plates (24) are slidably installed on the inner side of the positioning plate (8), and one end of the two rack plates (24) is fixedly connected to the two mounting plates (19) respectively. A transmission wheel (25) located on the inner side of the lifting plate (4) is installed on the outer side of the rotating rod (22), and a synchronous toothed belt (26) is rotatably installed between the three transmission wheels (25). Two support rods (27) are fixedly installed on one side of the mounting plate (19), and a sliding cavity for limiting the sliding of the support rod (27) is opened on the inner side of the positioning plate (8).

3. The inner mold suspension and lifting device of a prefabricated concrete ventilation panel according to claim 2, characterized in that: The quick-release mechanism further comprises a positioning rail (28) mounted on the inner side of the mounting bracket (1), a guide slide (29) is slidably mounted on the outer side of the positioning rail (28), one side of the guide slide (29) is fixedly mounted on the outer side of the lifting plate (4), a rotating column (30) is fixedly mounted on the top of the abutment plate (9), a positioning cylinder (31) is provided on the outer side of the rotating column (30), the positioning cylinder (31) is mounted on the bottom of the guide slide (29), and two fixing blocks (32) are fixedly mounted on the inner side of the positioning cylinder (31). A slip ring (33) is installed between the fixed blocks (32), two sliding sleeves (34) are slidably installed on the outer side of the slip ring (33), and the sliding sleeves (34) are installed on the outer side of the rotating column (30). Two arc springs (35) are provided on the outer side of the slip ring (33), a V-shaped plate (36) is provided on the outer side of the support plate (9), and the V-shaped plate (36) is fixedly installed on the outer side of the adjacent support rod (27), a prismatic insert rod (37) is fixedly installed on the bottom of the rotating column (30), and both ends of the adjusting rod (14) are provided with prismatic grooves.

4. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 1, characterized in that: An arc inner support (38) is installed on the inner side of the inner mold body (3), and the two ends of the limiting bracket (12) are respectively in contact with the two ends of the arc inner support (38).

5. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 1, characterized in that: A positioning spring (39) is provided on the outside of the slide rod (17), and the positioning spring (39) is fixedly installed between the template (7) and the limiting plate (18).

6. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 2, characterized in that: A hand wheel (40) is fixedly mounted on one end of the rotating rod (22).

7. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 2, characterized in that: Two T-shaped sliders (41) are fixedly mounted on the outer side of the support rod (27), and a long groove for limiting the sliding of the T-shaped sliders (41) is provided on the outer side of the positioning plate (8).

8. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 2, characterized in that: A magnet block (42) is mounted on one side of the mounting plate (19), and the magnet block (42) is located between the two clamping plates (20).

9. The inner mold suspension and lifting device for a prefabricated concrete ventilation panel according to claim 3, characterized in that: One end of the prism-shaped inserting rod (37) is a square prism structure.

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