Civil air defense door frame leveling device

Abstract

The utility model discloses a civil air defense door frame leveling device which comprises a supporting platform and a leveling frame, a leveling hydraulic cylinder capable of sliding and positioning in the length direction of the leveling frame is installed on the leveling frame, the supporting platform comprises a plurality of supporting blocks arranged in parallel, and the upper end faces of all the supporting blocks are located on the same plane. Every two adjacent supporting blocks are connected through a plurality of reinforcing plates. The upper end faces of the two door frame supporting plates are located on the same plane, the lower end faces of the two door frame supporting plates are attached to the upper end faces of the supporting blocks, the left ends and the right ends of the two door frame supporting plates are erected on the supporting blocks on the left side and the right side respectively, and the distance between the two door frame supporting plates is adjustable.

Description

Technical Field

[0001] The utility model relates to the field of quality control of civil air defense door frames, in particular to a civil air defense door frame leveling device. Background Art

[0002] In civil defense projects, civil defense doors serve as the entrances and exits of civil defense projects. The door frames are strips of steel, which are very easy to deform during the actual production process, affecting the normal use of the civil defense doors and posing certain safety hazards. Most civil defense doors need to pass through a door frame straightening machine to straighten the deformed door frame steel before they can be put into use.

[0003] The Chinese patent application number 201921983382.9 discloses a hydraulic leveling device for a door frame, including a support platform and a leveling frame, a plurality of rollers are installed on the support platform, a roller is installed at the bottom of the leveling frame, a transverse frame is sleeved on the leveling frame, a leveling hydraulic cylinder is installed on the transverse frame, and a leveling rod is connected to the piston rod of the leveling hydraulic cylinder. When in use, the door frame is placed on the support platform, the leveling frame is moved or the position of the transverse frame on the leveling frame is adjusted so that the leveling rod reaches a certain position; then the leveling hydraulic cylinder is started, the leveling rod is moved to the raised parts of the door frame, and the raised parts of the door frame are flattened with the leveling rod, so that the door frame can be leveled. The above-mentioned leveling device supports the door frame through the rollers on the support platform. During the leveling process, the door frame is prone to slip on the rollers and is difficult to position. Moreover, after long-term use, the rollers are prone to deformation and are inconvenient to replace. At the same time, the structure of this support platform is relatively complex and the overall cost is high. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a civil air defense door frame leveling device to solve the problems in the existing door frame leveling device that the supporting platform has a complex structure, it is inconvenient to position the door frame placed thereon, and the roller is easily deformed after long-term use.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A door frame leveling device for civil air defense includes a support platform and a leveling frame, a leveling hydraulic cylinder capable of sliding and positioning along the length direction of the leveling frame is installed on the leveling frame, the support platform includes a plurality of support blocks arranged in parallel, the upper end faces of all the support blocks are in the same plane, and two adjacent support blocks are connected by a plurality of reinforcing plates; two door frame support plates with upper end faces in the same plane and lower end faces in contact with the upper end faces of the support blocks are mounted on the support blocks, the left and right ends of the two door frame support plates are respectively mounted on the support blocks on the left and right sides, and the spacing between the two door frame support plates is adjustable. In this way, the support platform used is mainly composed of the support blocks and the door frame support plates arranged on the support blocks, two door frame support plates are arranged, and the door frame end faces on the opposite sides are supported, when the door frame to be leveled is supported, the door frame and the door frame support plates are in surface-to-surface contact, the contact area is large, and the friction between the door frame to be leveled is also large, and the force is evenly applied, the support is relatively stable, and it is not easy to deform after long-term use. At the same time, two door frame support plates are provided, and the spacing can be adjusted, so that they can adapt to the width and length of the same door frame to be leveled, as well as the width and length of different door frames to be leveled. Compared with a whole support plate, it not only saves materials and reduces costs, but also can be adjusted in real time according to specific circumstances, and the application is more flexible. The upper end faces of each support block are in the same plane, and the upper end faces of the two door frame support plates are also in the same plane, so that in application, it can be ensured that the upper end face of the door frame support plate is flat after assembly, effectively ensuring the leveling quality of the leveling hydraulic cylinder after pressing down.

[0007] Furthermore, the support blocks are provided with three, and two guide rails protruding from the upper end surfaces of the two support blocks are provided along the length direction thereof, and the two guide rails are respectively rectangular and dovetail-shaped; two slide grooves corresponding to the two guide rails are provided on the lower end surfaces of the two door frame support plates, and the slide grooves are connected with the corresponding guide rails. In this way, guide rails are provided on two of the support blocks, and slide grooves corresponding to the guide rails are provided on the lower end surfaces of the two door frame support plates, so that it can be effectively ensured that the door frame support plates will not be deflected during the movement process. At the same time, the cooperation between the guide rails and the grooves can prevent the door frame support plates from falling off the support frame. When pressed down, the door frame support plates are positioned by the cooperation between the guide rails and the grooves, as well as the gravity of the door frame support plates; one of the guide rails is set to be dovetail-shaped, so that the connection between the support block and the door frame support plate is tighter.

[0008] Furthermore, a through groove is provided on the upper end surface of the other support block along its length direction, and at least one row of balls with the lower ends placed in the through groove are provided on the lower end surfaces of the two door frame support plates. In this way, when the door frame support plate is slid, the provided balls can reduce the friction between the door frame support plate and the support block, making sliding more convenient.

[0009] Furthermore, a driving mechanism for driving the door frame support plate to move and position is installed at the lower end of one or both door frame support plates. In this way, the driving mechanism can be provided to facilitate the control of the moving distance of each door frame support plate, and after moving to the right position, the driving is stopped to position the door frame support plate.

[0010] Furthermore, the surface roughness of the upper end surface of each support block is 0.2-0.5 um. Thus, the lower the surface roughness, the lower the friction between the support block and the door frame support plate, which can reduce the driving force required for sliding.

[0011] Furthermore, at least one limiting plate perpendicular to the door frame support plate is provided on the outer side of one or both door frame support plates, and the upper and lower heights of the limiting plates are less than the thickness of the door frame to be leveled. In this way, after the limiting plates are provided, the door frame to be leveled placed on the door frame support plates can be limited from the side, so that the door frame after placement will not be deviated, and it is ensured that it always remains on the moving path of the leveling hydraulic cylinder during the downward pressure and leveling process. If limiting plates are provided on both door frame support plates, the width between the two door frame support plates can be adjusted to be slightly wider than the width of the door frame to be leveled before placement, and then, after the door frame to be leveled is placed, one side of the door frame support plate is driven to move, and the limiting plates on the two door frame support plates can clamp and fix the door frame to be leveled. When the height of the limiting plates is less than the thickness of the door frame to be leveled, it can be avoided that the cylinder head of the leveling hydraulic cylinder collides with the limiting plates when it is pressed downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the elevation structure of the civil air defense door frame leveling device in the embodiment;

[0013] Figure 2 It is a top view of the structure of the civil air defense door frame leveling device in the embodiment. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0015] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] like Figure 1-Figure 2As shown, the present embodiment provides a civil air defense door frame leveling device, comprising a supporting platform and a leveling frame 1, wherein the leveling frame 1 is composed of a cross beam 11 and grounding columns 12 fixedly mounted on the left and right ends of the cross beam 11, and a leveling hydraulic cylinder 13 capable of sliding and positioning along the length direction of the leveling frame 1 is mounted on the cross beam 11 of the leveling frame 1, and a leveling rod is connected to the piston rod of the leveling hydraulic cylinder 13; the supporting platform comprises a plurality of support blocks 2 arranged in parallel, the upper end surfaces of all support blocks 2 are in the same plane, and two adjacent support blocks 2 are connected by a plurality of reinforcing plates 4; two door frame support plates 3 are mounted on the support blocks 2, whose upper end surfaces are in the same plane and whose lower end surfaces are in contact with the upper end surfaces of the support blocks 2, and the left and right ends of the two door frame support plates 3 are respectively mounted on the support blocks 2 on the left and right sides, and the spacing between the two door frame support plates 3 is adjustable. In this way, the adopted support platform is mainly composed of a support block 2 and a door frame support plate 3 arranged on the support block 2. Two door frame support plates 3 are arranged, which can support the end faces of the door frames on opposite sides. When the door frame to be leveled is supported, the door frame and the door frame support plates 3 are in face-to-face contact, and the contact area is large. The friction between the door frame to be leveled is also large, and the force is evenly applied, the support is relatively stable, and it is not easy to deform after long-term use. At the same time, two door frame support plates 3 are arranged, and the spacing can be adjusted, so that it can adapt to the width and length of the same door frame to be leveled, as well as the width and length of different door frames to be leveled. Compared with a whole support plate, it not only saves materials and reduces costs, but also can be adjusted in real time according to specific circumstances, and the application is more flexible. The upper end faces of each support block 2 are in the same plane, and the upper end faces of the two door frame support plates 3 are also in the same plane, so that in application, it can be ensured that the upper end face of the door frame support plate 3 is a plane after assembly, effectively ensuring the leveling quality of the leveling hydraulic cylinder 13 after pressing down.

[0017] Specifically, in order to ensure sufficient support for the door frame support plate 3, three support blocks 2 are provided in this embodiment, and two guide rails 21 protruding from the upper end surfaces of the support blocks 2 are provided on the upper end surfaces of two of the support blocks 2 along their length directions, and the two guide rails 21 are respectively rectangular and dovetail-shaped; a through groove is provided on the upper end surface of another support block 2 along its length direction; two slide grooves corresponding to the two guide rails 21 and at least one row of balls with their lower ends placed in the through grooves are provided on the lower end surfaces of the two door frame support plates 3, and the slide grooves are cooperatively connected with the corresponding guide rails 21. In this way, guide rails 21 are arranged on two of the support blocks 2, and sliding grooves corresponding to the guide rails 21 are arranged on the lower end surfaces of the two door frame support plates 3, so as to effectively ensure that the door frame support plates 3 will not deviate during the movement. At the same time, the cooperation between the guide rails 21 and the grooves can prevent the door frame support plates 3 from falling off the support frame. When pressed down, the door frame support plates 3 are positioned by the cooperation between the guide rails 21 and the grooves, and the gravity of the door frame support plates 3; one of the guide rails 21 is set to a dovetail shape, so that the connection between the support block 2 and the door frame support plate 3 is tighter. When sliding the door frame support plate 3, the balls arranged can reduce the friction between the door frame support plate 3 and the support block 2, making sliding more convenient.

[0018] Since the overall thickness of the door frame support plate 3 is relatively large and the length is relatively long, it is inconvenient to push it manually. In order to facilitate the sliding control of the door frame support plate 3, a driving mechanism 6 for driving the door frame support plate 3 to move and position is installed at the lower end of each of the two door frame support plates 3. The driving mechanism 6 includes a driving motor. The driving motor converts the rotary power into linear movement through a transmission device to drive the door frame support plate 3 to move. In a specific implementation, one of the door frame support plates 3 can be set to be fixed, and the driving mechanism 6 is set at the lower end of the other door frame support plate 3.

[0019] Furthermore, the surface roughness of the upper end surface of each support block 2 is 0.2-0.5 μm. Thus, the lower the surface roughness, the lower the friction between the support block 2 and the door frame support plate 3, which can reduce the driving force required for sliding.

[0020] In order to facilitate the positioning of the door frame to be leveled after placement, at least one positioning plate 31 perpendicular to the door frame support plate 3 is also provided on the outer side of one or both door frame support plates 3, and the upper and lower heights of the positioning plate 31 are less than the thickness of the door frame to be leveled. After the positioning plate 31 is provided, the door frame to be leveled placed on the door frame support plate 3 can be limited from the side, so that the door frame will not be deviated after placement, and it is ensured that it always remains on the moving path of the leveling hydraulic cylinder 13 during the downward pressure and leveling process. If both door frame support plates 3 are provided with positioning plates 31, the width between the two door frame support plates 3 can be adjusted to be slightly wider than the width of the door frame to be leveled before placement, and then, after the door frame to be leveled is placed, the door frame support plate 3 on one side is driven to move, and the positioning plates 31 on the two door frame support plates 3 can clamp and fix the door frame to be leveled. When the height of the limiting plate 31 is smaller than the thickness of the door frame to be leveled, it can avoid collision between the cylinder head of the leveling hydraulic cylinder 13 and the limiting plate 31 when the cylinder head is pressed down.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A civil air defense door frame leveling device, comprising a support platform and a leveling frame, on which a leveling hydraulic cylinder capable of sliding and positioning along the length direction of the leveling frame is installed, characterized in that: The support platform includes a plurality of support blocks arranged in parallel, the upper end surfaces of all the support blocks are in the same plane, and two adjacent support blocks are connected by a plurality of reinforcement plates; two door frame support plates are mounted on the support blocks, the upper end surfaces of which are in the same plane and the lower end surfaces are in contact with the upper end surfaces of the support blocks, the left and right ends of the two door frame support plates are respectively mounted on the support blocks on the left and right sides, and the spacing between the two door frame support plates is adjustable.

2. The civil air defense door frame leveling device according to claim 1, characterized in that: There are three support blocks, and two guide rails are provided on the upper end surfaces of two of the support blocks along their length directions, and the two guide rails are respectively rectangular and dovetail-shaped; two slide grooves corresponding to the two guide rails are provided on the lower end surfaces of the two door frame support plates, and the slide grooves are cooperatively connected with the corresponding guide rails.

3. The civil air defense door frame leveling device according to claim 2, characterized in that: A through groove is arranged on the upper end surface of the other supporting block along its length direction, and at least one row of balls with the lower ends placed in the through groove are arranged on the lower end surfaces of the two door frame supporting plates.

4. The civil air defense door frame leveling device according to claim 3, characterized in that: A driving mechanism for driving the door frame supporting plate to move and position is installed at the lower end of one or both door frame supporting plates.

5. The civil air defense door frame leveling device according to claim 3, characterized in that: The surface roughness of the upper end surface of each support block is 0.2-0.5um.

6. The civil air defense door frame leveling device according to claim 1, 2, 3, 4 or 5, characterized in that: At least one limiting plate perpendicular to the door frame supporting plate is also provided on the outer side of one or both door frame supporting plates, and the upper and lower heights of the limiting plate are smaller than the thickness of the door frame to be leveled.

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