A vacuum demoulding lifting device for cable trench and water trench plates

Abstract

The invention discloses a vacuum demoulding and lifting device for a cable trench gutter plate, relates to the field of concrete precast part lifting, solves the problem that the existing vacuum demoulding and lifting device is prone to cause the gutter plate to rupture, comprises: a device support plate and four vacuum suction cups arranged in a rectangular array at the bottom of the device support plate, two symmetrically distributed hanging rings are fixedly installed on the top of the device support plate, a mold is arranged below the device support plate, and a gutter plate body is arranged on the inner side of the mold; further comprises: a demoulding mechanism, which is used to lift and demould the gutter plate body and the mold, and the demoulding mechanism is installed on the outer side of the device support plate; the invention uses the demoulding mechanism to insert a pressure strip into the water permeable hole of the gutter plate body for fixing, and press against the top of the mold, and use a pulling method to make the outer side of the gutter plate body and the mold loose, thereby achieving the effect of rapid demoulding.

Description

Technical Field

[0001] The invention relates to the field of concrete prefabricated part lifting, in particular to a vacuum demoulding lifting device for cable trench and water trench plates. Background Art

[0002] The cable trench is an underground pipeline used for laying and replacing power or telecommunication cable facilities. It is also the enclosure structure for the laid cable facilities. There are rectangular, circular, arched and other pipeline structures. Usually, it is covered with a ditch board to provide protection for the cable equipment.

[0003] When producing the gutter plate, concrete is usually poured into a mold of corresponding size for molding. When taking the material, the gutter plate is demoulded and lifted by vacuum adsorption, which is convenient for quick material taking. The existing Chinese public patent document: CN117902524B discloses a demoulding vacuum lifter for concrete processing, which cleans the dust sticking to the top of the concrete mold through a cleaning mechanism to facilitate the vacuum suction cup to adsorb the gutter plate. However, when the gutter plate is prefabricated, the outer side will wrap the mold. If the vacuum suction cup directly adsorbs and lifts the top of the gutter plate, since the outer side of the gutter plate sticks to the inner side of the mold, a large pulling force is required to pull the gutter plate. However, when the pulling force is too large, it is easy to cause the contact point between the gutter plate and the vacuum suction cup to rupture. Summary of the invention

[0004] The object of the present invention is to provide a vacuum demoulding and lifting device for cable trench and water trench plates to solve the problems raised in the above-mentioned background technology.

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

[0006] A vacuum demoulding and lifting device for a cable trench gutter plate comprises: a device support plate and four vacuum suction cups arranged in a rectangular array at the bottom of the device support plate, two symmetrically distributed hanging rings are fixedly installed on the top of the device support plate for installing the hook of a crane, a mold is arranged below the device support plate, a gutter plate body is arranged on the inner side of the mold, the gutter plate body is cast and formed by the mold, and a plurality of water-permeable holes are formed; it also comprises: a demoulding mechanism for pulling and demoulding the gutter plate body from the mold, the demoulding mechanism is installed on the outer side of the device support plate; a clamping plate mechanism for demoulding the gutter plate body with more water-permeable hole sizes, the clamping plate mechanism is installed on the outer side of the device support plate; an adsorption mechanism for quickly adsorbing the gutter plate body, the adsorption mechanism is installed on the bottom of the device support plate.

[0007] The top of the device support plate is fixedly connected with two symmetrically distributed sleeves, and the two mounting rods are slidably mounted on the inner sides of the two sleeves respectively to improve the stability of the movement of the mounting rods and maintain a certain distance between the pull plate and the device support plate, the top of the sleeve is in contact with the bottom of the pull plate, and a handle is fixedly installed on the top of the pull plate for pulling the pull plate, and the bottom of the device support plate is provided with four bottom plates in a rectangular array, and two symmetrically distributed spring telescopic rods are fixedly connected between the bottom plate and the device support plate, and the bottom plate is against the top of the mold through the spring telescopic rod.

[0008] Preferably, the clamping plate mechanism includes two mounting rings which are vertically distributed and fixedly installed on the outer side of the mounting rod, a fixing plate is fixedly connected to the side of the pressure strip close to the mounting rod, a connecting rod 1 is rotatably installed between the fixing plate and the mounting ring, so that the fixing plate can tilt and swing with the connecting rod 1 as a fulcrum, a sleeve is slidably installed on the outer side of the mounting rod, the sleeve is located above the mounting ring, and a connecting rod 2 is rotatably installed between the outer side of the sleeve and the fixing plate, and when the sleeve moves, the fixing plate can be tilted and swung through the connecting rod 2, so that the pressure strip can press against the gutter plate body. A water-permeable hole, a pressure cylinder is fixedly connected to the top of the pressure cylinder, a moving ring is fixedly connected to the top of the pressure cylinder, a moving block is arranged inside the mounting rod, a fixed block is fixedly connected between the moving block and the moving ring, so that when the moving block moves, it can drive the moving ring to move through the fixed block, a cavity for the limited sliding of the fixed block is opened on the inner side of the mounting rod, a screw rod matching the fixed block is rotatably installed on the inner side of the cavity, so that the screw rod can drive the moving block to move along the cavity in the mounting rod, and the screw rod passes through the pull plate to facilitate the rotation adjustment of the screw rod.

[0009] Preferably, the adsorption mechanism includes an air valve fixedly mounted on the top of the vacuum suction cup, through which the vacuum suction cup is evacuated and adsorbed on the gutter plate body, the top of the air valve is fixedly connected to a top plate, the top of the top plate is fixedly connected to a spring telescopic rod 2, the elastic potential energy of the spring telescopic rod 2 is less than the elastic potential energy of the spring telescopic rod 1, and the horizontal height of the bottom of the vacuum suction cup is higher than the horizontal height of the bottom of the bottom plate, the spring telescopic rod 2 extends to the top of the device support plate, the outer side of the spring telescopic rod 2 is fixedly connected to a threaded barrel, the inner side of the device support plate is provided with an internal thread matching the threaded barrel, the top of the threaded barrel is fixedly connected to a swivel, the bottom of the swivel is in contact with the top of the device support plate, the threaded barrel is driven to rotate by the swivel, so as to facilitate the adjustment of the horizontal height of the vacuum suction cup.

[0010] Preferably, a plurality of anti-skid ribs distributed at equal distances are provided on the outer side of the pressure strip to increase the friction between the pressure strip and the gutter plate body.

[0011] Preferably, a rubber pad is fixedly connected to the bottom of the base plate to provide protection between the base plate and the mold when the base plate contacts the mold.

[0012] Preferably, a pressing plate located below the handle is fixedly mounted on the top of the device support plate to facilitate pressing the device support plate.

[0013] Preferably, a plurality of sliding blocks in central symmetry are fixedly connected to the inner side of the collar, and a sliding groove for limiting the sliding of the sliding blocks is provided on the outer side of the mounting rod, thereby improving the stability of the movement of the collar.

[0014] Preferably, a synchronous belt located on the inner side of the pull plate is rotatably installed between the two screw rods to facilitate synchronous adjustment of the two screw rods.

[0015] Preferably, a turntable is fixedly connected to one end of the screw rod close to the pull plate to facilitate rotation adjustment of the screw rod.

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

[0017] The demoulding mechanism of the present invention can insert the pressure strip into the water permeable hole of the gutter plate body for fixation before the vacuum suction cup adsorbs the gutter plate body, and press against the top of the mold, so as to loosen the outer side of the gutter plate body and the mold by pulling, thereby achieving the effect of rapid demoulding.

[0018] The present invention can synchronously adjust four pressure strips in the same water permeable hole through the clamping plate mechanism, and increase the squeezing force of the pressure strip on the water permeable hole, thereby facilitating corresponding adjustment of the ditch plate body according to water permeable holes of more sizes, thereby improving the convenience of pressure strip installation.

[0019] The present invention uses an adsorption mechanism to make the vacuum suction cup elastically rest on the top of the gutter plate body, which is convenient for the pressure strip to pull and demould the gutter plate body, and the rotating ring can be rotated to adjust the horizontal height of the vacuum suction cup, thereby achieving the effect of rapid adsorption and facilitating the adsorption of more types of gutter plate bodies. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a schematic diagram of the structure of the water channel plate body and the device support plate in the present invention;

[0022] Figure 3 It is a schematic diagram of the mounting rod and handle structure in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the layering strip and the fixing plate in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the moving ring and the moving block in the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the slider and the collar in the present invention;

[0026] Figure 7 It is a schematic diagram of the synchronous belt and the pull plate structure in the present invention;

[0027] Figure 8 It is a schematic diagram of the vacuum suction cup and the air valve structure of the present invention.

[0028] In the figure: 1. device support plate; 2. vacuum suction cup; 3. hanging ring; 4. mold; 5. gutter plate body; 6. pull plate; 7. mounting rod; 8. pressure strip; 9. sleeve; 10. handle; 11. bottom plate; 12. spring telescopic rod 1; 13. mounting ring; 14. fixed plate; 15. connecting rod 1; 16. sleeve; 17. connecting rod 2; 18. pressing cylinder; 19. moving ring; 20. moving block; 21. fixed block; 22. screw; 23. air valve; 24. top plate; 25. spring telescopic rod 2; 26. threaded cylinder; 27. swivel; 28. anti-skid rib; 29. ​​rubber pad; 30. pressing plate; 31. slider; 32. synchronous belt; 33. turntable. DETAILED DESCRIPTION

[0029] 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 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 creative inspiration are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1-Figure 8 The figure shows a vacuum demoulding and lifting device for a cable trench gutter plate, comprising a device support plate 1 and four vacuum suction cups 2 arranged in a rectangular array at the bottom of the device support plate 1, two symmetrically distributed hanging rings 3 are fixedly installed on the top of the device support plate 1 for installing the hook of the crane, a mold 4 is arranged below the device support plate 1, a gutter plate body 5 is arranged on the inner side of the mold 4, the gutter plate body 5 is cast by the mold 4 and a plurality of water-permeable holes are formed; it also includes: a demoulding mechanism for pulling and demoulding the gutter plate body 5 and the mold 4, the demoulding mechanism is installed on the outer side of the device support plate 1; a card plate mechanism for demoulding the gutter plate body 5 with more water-permeable hole sizes, the card plate mechanism is installed on the outer side of the device support plate 1; an adsorption mechanism for quickly adsorbing the gutter plate body 5, the adsorption mechanism is installed at the bottom of the device support plate 1.

[0031] The demoulding mechanism includes a pull plate 6 arranged above the device support plate 1, and two symmetrically distributed mounting rods 7 are fixedly installed at the bottom of the pull plate 6. The mounting rod 7 slides through the device support plate 1, and four equidistantly distributed pressure strips 8 are arranged on the outer side of the mounting rod 7. The outer side of the pressure strip 8 contacts the water permeable holes of the ditch plate body 5, and is used to press against the water permeable holes of the ditch plate body 5 for fixing. The top of the device support plate 1 is fixedly connected with two symmetrically distributed sleeves 9, and the two mounting rods 7 are respectively slidably installed on the inner sides of the two sleeves 9 to improve the stability of the movement of the mounting rod 7 and maintain a certain distance between the pull plate 6 and the device support plate 1. The top of the sleeve 9 contacts the bottom of the pull plate 6, and a handle 10 is fixedly installed on the top of the pull plate 6 for pulling the pull plate 6. The bottom of the device support plate 1 is provided with four bottom plates 11 in a rectangular array, and two symmetrically distributed spring telescopic rods 12 are fixedly connected between the bottom plate 11 and the device support plate 1, and the bottom plate 11 presses against the top of the mold 4 through the spring telescopic rod 12;

[0032] The user places the bottom plate 11 against the top of the mold 4, and pulls down the plate 6 so that the pressure strip 8 on the mounting rod 7 is pressed against the water-permeable hole of the gutter plate body 5 for fixation, and presses against the top of the device support plate 1, so that the four bottom plates 11 press and fix the top of the mold 4, and the spring telescopic rod 12 is compressed downward. The user repeatedly pulls the handle 10 on the plate 6, and the pressure strip 8 provides continuous pulling force to the gutter plate body 5, so that the gutter plate body 5 and the mold 4 are loosened, which is convenient for the gutter plate body 5 to be quickly demoulded, thereby solving the problem that the existing lifting and demoulding device is difficult to demould between the gutter plate body 5 and the mold 4, thereby achieving the effect of quick demoulding.

[0033] The clamping plate mechanism includes two mounting rings 13 which are vertically distributed and fixedly mounted on the outside of the mounting rod 7. A fixing plate 14 is fixedly connected to the side of the pressure strip 8 close to the mounting rod 7. A connecting rod 15 is rotatably mounted between the fixing plate 14 and the mounting ring 13, so that the fixing plate 14 can be tilted and swung with the connecting rod 15 as a fulcrum. A collar 16 is slidably mounted on the outside of the mounting rod 7. The collar 16 is located above the mounting ring 13. A connecting rod 2 17 is rotatably mounted between the outside of the collar 16 and the fixing plate 14. When the collar 16 moves, the fixing plate 14 can be tilted and swung through the connecting rod 2 17, so that the pressure strip 8 is against the water permeable hole of the ditch plate body 5. The top of the sleeve 16 is fixedly connected with a pressure cylinder 18, and the top of the pressure cylinder 18 is fixedly connected with a moving ring 19. A moving block 20 is arranged inside the mounting rod 7, and a fixed block 21 is fixedly connected between the moving block 20 and the moving ring 19, so that when the moving block 20 moves, it can drive the moving ring 19 to move through the fixed block 21. A cavity for the fixed block 21 to limit the sliding of the inner side of the mounting rod 7 is provided, and a screw 22 that matches the fixed block 21 is rotatably installed inside the cavity, so that the screw 22 can drive the moving block 20 to move along the cavity in the mounting rod 7. The screw 22 passes through the pull plate 6, which is convenient for rotating and adjusting the screw 22;

[0034] The user rotates the screw rod 22 to drive the moving block 20 to move downward along the cavity in the installation rod 7, so that the moving block 20 drives the moving ring 19 to move downward along the outer side of the installation rod 7 through the fixed block 21, and the moving block 20 drives the collar 16 to move synchronously along the outer side of the installation rod 7 through the pressing cylinder 18, so that the collar 16 pushes the fixed plate 14 to get close to the inner side of the water permeable hole of the ditch plate body 5 through the connecting rod 2 17, and the fixed plate 14 drives the two connecting rods 1 15 to swing synchronously with the installation ring 13 as the fulcrum, so that the four fixed plates 14 simultaneously drive the corresponding pressure strips 8 to contact the inner side of the water permeable hole, and fix the water permeable hole of the ditch plate body 5, so as to facilitate the corresponding adjustment of the ditch plate body 5 according to the water permeable holes of more sizes, and improve the convenience of installing the pressure strip 8.

[0035] The adsorption mechanism includes an air valve 23 fixedly mounted on the top of the vacuum suction cup 2, through which the vacuum suction cup 2 is evacuated and adsorbed on the gutter plate body 5, the top of the air valve 23 is fixedly connected to a top plate 24, the top of the top plate 24 is fixedly connected to a spring telescopic rod 25, the elastic potential energy of the spring telescopic rod 25 is less than the elastic potential energy of the spring telescopic rod 12, and the horizontal height of the bottom of the vacuum suction cup 2 is higher than the horizontal height of the bottom of the bottom plate 11, the spring telescopic rod 25 extends to the top of the device support plate 1, the outer side of the spring telescopic rod 25 is fixedly connected to a threaded cylinder 26, the inner side of the device support plate 1 is provided with an internal thread matching the threaded cylinder 26, the top of the threaded cylinder 26 is fixedly connected to a swivel 27, the bottom of the swivel 27 is in contact with the top of the device support plate 1, the threaded cylinder 26 is driven to rotate by the swivel 27, and the horizontal height of the vacuum suction cup 2 is adjusted;

[0036] When the user pulls the gutter plate body 5, the elasticity of the spring telescopic rod 25 can be used to prevent the vacuum suction cup 2 from blocking the top of the gutter plate body 5. After demolding the gutter plate body 5 and the mold 4, the user activates the air valve 23 to extract the air between the vacuum suction cup 2 and the gutter plate body 5, thereby reducing the air pressure at the bottom of the vacuum suction cup 2, so that the vacuum suction cup 2 can adsorb the gutter plate body 5, which is convenient for lifting and conveying. In addition, the user can rotate the swivel 27 to drive the threaded cylinder 26 to rotate, so that the threaded cylinder 26 drives the vacuum suction cup 2 to move through the spring telescopic rod 25, which is convenient for adjusting the horizontal height of the vacuum suction cup 2, and is convenient for adsorbing more types of gutter plate bodies 5, thereby improving the convenience of using the device.

[0037] Working principle: First, the user picks up the device support plate 1 and places the bottom plate 11 against the top of the mold 4. Then, the user holds the handle 10 and presses the pull plate 6 downward to insert the pressure strip 8 on the installation rod 7 into the water permeable hole of the ditch plate body 5. Then, the user rotates the screw 22, and the screw 22 drives the moving block 20 to move downward along the cavity in the installation rod 7, so that the moving block 20 drives the moving ring 19 to move downward along the outside of the installation rod 7 through the fixed block 21. The moving block 20 drives the sleeve 16 to move synchronously along the outside of the installation rod 7 through the pressing cylinder 18, so that the sleeve 16 pushes the fixed plate 14 to the inner side of the water permeable hole of the ditch plate body 5 through the connecting rod 2 17, and the fixed plate 14 drives the two connecting rods 1 15 to swing synchronously with the installation ring 13 as the fulcrum. As a result, the four fixed plates 14 simultaneously drive the corresponding pressure strips 8 to contact the inner side of the water permeable hole, thereby rotating another screw 22. The pressure strips 8 on the two mounting rods 7 squeeze and fix the water permeable holes of the gutter plate body 5. At this time, the user presses the top of the device support plate 1 downward, so that the four bottom plates 11 press and fix the top of the mold 4, and uses the contraction of the spring telescopic rod 12 to make the bottom plate 11 firmly against the top of the mold 4. Then, the user repeatedly pulls the handle 10, and the pressure strips 8 provide continuous pulling force to the gutter plate body 5, so that the gutter plate body 5 and the mold 4 become loose, and the gutter plate body 5 can be quickly separated from the mold 4. Finally, the user activates the air valve 23 to extract the air between the vacuum suction cup 2 and the gutter plate body 5, reduces the air pressure at the bottom of the vacuum suction cup 2, so that the vacuum suction cup 2 adsorbs the gutter plate body 5, and puts the hook of the crane on the hanging ring 3 on the device support plate 1, so as to lift the gutter plate body 5, thereby achieving the effect of rapid demoulding and lifting and conveying.

[0038] Example 2: Please refer to Figure 1-Figure 4This embodiment further explains Example 1. The outer side of the pressure strip 8 in the figure is provided with a plurality of anti-skid ribs 28 distributed at equal intervals to increase the friction between the pressure strip 8 and the gutter plate body 5. A rubber pad 29 is fixedly connected to the bottom of the bottom plate 11 to provide protection between the bottom plate 11 and the mold 4 when the bottom plate 11 contacts the mold 4. A pressing plate 30 located below the handle 10 is fixedly installed on the top of the device support plate 1 to facilitate pressing the device support plate 1.

[0039] In this embodiment: when the pressure strip 8 contacts the water permeable hole of the gutter plate body 5, the friction between the pressure strip 8 and the inner side of the water permeable hole can be increased through the anti-slip ribs 28, which is convenient for pulling the gutter plate body 5, and the pressure plate 30 on the top of the pressing device support plate 1 can be pressed to make the rubber pad 29 at the bottom of the bottom plate 11 press and fix the top of the mold 4, providing protection between the bottom plate 11 and the mold 4, and improving the durability of the bottom plate 11.

[0040] Example 3: Please refer to Figure 4-Figure 7 This embodiment further illustrates other embodiments. A plurality of sliders 31 in central symmetry are fixedly connected to the inner side of the illustrated collar 16. A slide groove for limiting the sliding of the sliders 31 is provided on the outer side of the mounting rod 7 to improve the stability of the movement of the collar 16. A synchronous belt 32 located on the inner side of the pull plate 6 is rotatably installed between the two screw rods 22 to facilitate synchronous adjustment of the two screw rods 22. A turntable 33 is fixedly connected to one end of the screw rod 22 close to the pull plate 6 to facilitate rotational adjustment of the screw rod 22.

[0041] In this embodiment: when the ring 16 moves, it can drive the slider 31 to move along the slide groove outside the mounting rod 7, thereby improving the stability of the movement of the ring 16, and the user can rotate the turntable 33 on any one of the screw rods 22 to make the screw rod 22 drive the synchronous belt 32 to rotate, so that the other screw rod 22 rotates synchronously, thereby realizing synchronous adjustment of the two screw rods 22, facilitating rapid adjustment of the pressure strip 8, and improving the convenience of using the demolding device.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum demoulding lifting device for cable trench and water trench plates, characterized in that: include: A device support plate (1) and four vacuum suction cups (2) arranged in a rectangular array at the bottom of the device support plate (1); two symmetrically distributed hanging rings (3) are fixedly mounted on the top of the device support plate (1); a mold (4) is arranged below the device support plate (1); and a water ditch plate body (5) is arranged on the inner side of the mold (4); Also includes: A demoulding mechanism is used to lift and demould the gutter plate body (5) and the mold (4), the demoulding mechanism is installed on the outer side of the device support plate (1), the demoulding mechanism comprises a pulling plate (6) arranged above the device support plate (1), two symmetrically distributed mounting rods (7) are fixedly installed on the bottom of the pulling plate (6), the mounting rods (7) slide through the device support plate (1), and four equidistantly distributed pressure strips (8) are arranged on the outer side of the mounting rod (7), and the outer side of the pressure strips (8) is in contact with the water permeable The holes are in contact with each other, the top of the device support plate (1) is fixedly connected to two symmetrically distributed sleeves (9), the two mounting rods (7) are slidably mounted on the inner sides of the two sleeves (9), the top of the sleeve (9) is in contact with the bottom of the pull plate (6), the top of the pull plate (6) is fixedly mounted with a handle (10), the bottom of the device support plate (1) is provided with four bottom plates (11) in a rectangular array, and two symmetrically distributed spring telescopic rods (12) are fixedly connected between the bottom plate (11) and the device support plate (1); A card plate mechanism is used for demoulding the ditch plate body (5) with more water permeable hole sizes, the card plate mechanism is installed on the outer side of the device support plate (1), the card plate mechanism comprises two mounting rings (13) which are vertically distributed and fixedly installed on the outer side of the mounting rod (7), a fixing plate (14) is fixedly connected to the side of the pressure strip (8) close to the mounting rod (7), a connecting rod (15) is rotatably installed between the fixing plate (14) and the mounting ring (13), a sleeve ring (16) is slidably installed on the outer side of the mounting rod (7), the sleeve ring (16) is located above the mounting ring (13), and the sleeve ring (16) A connecting rod (17) is rotatably mounted between the outer side of the mounting rod (7) and the fixing plate (14); a pressure cylinder (18) is fixedly connected to the top of the sleeve ring (16); a moving ring (19) is fixedly connected to the top of the pressure cylinder (18); a moving block (20) is arranged inside the mounting rod (7); a fixed block (21) is fixedly connected between the moving block (20) and the moving ring (19); a cavity is provided on the inner side of the mounting rod (7) for the fixed block (21) to slide in a limited position; a screw (22) matching the fixed block (21) is rotatably mounted on the inner side of the cavity; the screw (22) passes through the pulling plate (6); A suction mechanism is provided for quickly suctioning the ditch plate body (5), the suction mechanism being mounted on the bottom of the device support plate (1), the suction mechanism comprising an air valve (23) fixedly mounted on the top of the vacuum suction cup (2), the top of the air valve (23) being fixedly connected to a top plate (24), the top of the top plate (24) being fixedly connected to a second spring telescopic rod (25), the elastic potential energy of the second spring telescopic rod (25) being less than the elastic potential energy of the first spring telescopic rod (12), the second spring telescopic rod (25) extending to the top of the device support plate (1), the outer side of the second spring telescopic rod (25) being fixedly connected to a threaded barrel (26), the inner side of the device support plate (1) being provided with an internal thread matching the threaded barrel (26), the top of the threaded barrel (26) being fixedly connected to a swivel (27), the bottom of the swivel (27) being in contact with the top of the device support plate (1).

2. A vacuum demoulding lifting device for cable trench and water trench plates according to claim 1, characterized in that: The outer side of the pressure strip (8) is provided with a plurality of anti-slip ribs (28) distributed at equal distances.

3. A vacuum demoulding lifting device for cable trench and water trench plates according to claim 1, characterized in that: A rubber pad (29) is fixedly connected to the bottom of the bottom plate (11).

4. A vacuum demoulding lifting device for cable trench and water trench plates according to claim 1, characterized in that: A pressing plate (30) located below the handle (10) is fixedly mounted on the top of the device support plate (1).

5. The vacuum demoulding lifting device for cable trench and water trench plate according to claim 1 is characterized in that: A plurality of sliding blocks (31) which are centrally symmetrical are fixedly connected to the inner side of the collar (16), and a sliding groove for limiting the sliding of the sliding blocks (31) is provided on the outer side of the mounting rod (7).

6. A vacuum demoulding lifting device for cable trench and water trench plates according to claim 1, characterized in that: A synchronous belt (32) located inside the pull plate (6) is rotatably mounted between the two screw rods (22).

7. The vacuum demoulding and lifting device for cable trench and water trench plates according to claim 1, characterized in that: One end of the screw rod (22) close to the pull plate (6) is fixedly connected to a rotating disk (33).

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