Bending equipment for civil air defense door machining

Abstract

The utility model relates to the technical field of civil air defense door processing, in particular to a bending device for civil air defense door processing, which comprises a device box body, three groups of support rolling shafts are rotatably connected to the left side and the right side of the front side surface of the device box body, a fixed box body is fixedly connected to the upper side of the device box body, and a bending mechanism is arranged on the front side of the fixed box body. The bending mechanism comprises a mounting plate, a hydraulic cylinder, a movable block, a connecting plate, a first positioning rod, a pressing plate and a supporting spring, the mounting plate is fixedly connected with the front side surface of the fixed box body, the hydraulic cylinder is fixedly mounted on the upper side of the mounting plate, and the movable block is fixedly connected with a telescopic rod in the hydraulic cylinder; a movable block is pressed downwards through a telescopic rod in a hydraulic cylinder, a steel pipe on the surface of a supporting rolling shaft is bent, the movable block descends and drives connecting plates on the two sides to move downwards at the same time, then a pressing plate is pushed downwards through a supporting spring, the steel pipe is pressed, the two ends of the steel pipe are prevented from tilting upwards, and then the bending precision of the steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense door processing, in particular to a bending device for civil air defense door processing. Background Art

[0002] Civil defense doors are the doors at the entrances and exits of people's defense projects. There are distinct classifications of civil defense doors, including ordinary single-leaf and double-leaf protective closed doors and closed doors, movable threshold single-leaf and double-leaf protective closed doors and closed doors, and other civil defense equipment.

[0003] Among them, CN217831391U discloses a kind of equipment for bending and processing steel pipe protective shell of civil air defense door, including a fixed side plate, one side of the fixed side plate is fixedly connected with a pressure motor, the output shaft of the pressure motor is fixedly connected with a threaded rotating rod through a coupling, one end of the threaded rotating rod is threadedly connected with a threaded sleeve, one side of the threaded sleeve is movably connected with a movable rotating rod, one end of the movable rotating rod is movably connected with a movable top block, one side of the movable top block is fixedly connected with a connecting clamping rod, one side of the movable top block is fixedly connected with a limiting clamping rod, and one side of the fixed side plate is fixedly connected with a positioning slide rail. The equipment for bending and processing steel pipe protective shell of civil air defense door can achieve the purpose of high working efficiency, reduce the labor consumption of the device, shorten the processing operation time of the user, and reduce the economic consumption of the user, thereby improving the practicality of the equipment for bending and processing steel pipe protective shell of civil air defense door.

[0004] The device bends the steel pipe by placing it above a fixed clamp rod and then pushing the movable top block downward. During use, there is no mechanism above the fixed clamp rod to press the two ends of the steel pipe, which causes the two ends of the steel pipe to easily warp upward when bending, thereby reducing the bending accuracy.

[0005] Therefore, it is necessary to invent a bending device for civil air defense door processing to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a bending device for processing civil air defense doors, so as to solve the problem that the two ends of the steel pipe are easy to warp upwards when bending, thereby reducing the bending accuracy.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending equipment for processing civil air defense doors, comprising an equipment box, three groups of support rollers are rotatably connected to the left and right sides of the front surface of the equipment box, the upper side of the equipment box is fixedly connected to a fixed box, and the front side of the fixed box is provided with a bending mechanism, which comprises a mounting plate, a hydraulic cylinder, a movable block, a connecting plate, a first positioning rod, a pressing plate and a supporting spring, the mounting plate is fixedly connected to the front surface of the fixed box, the hydraulic cylinder is fixedly installed on the upper side of the mounting plate, and the movable block is fixedly connected to the telescopic rod in the hydraulic cylinder.

[0008] By adopting the above technical solution, the steel pipe is set above the supporting roller, and then the hydraulic cylinder pushes the movable block downward to bend the steel pipe. While the movable block descends, the pressing plate is pushed downward through the connecting plate to press the two ends of the steel pipe to prevent the ends of the steel pipe from warping and improve the bending accuracy of the steel pipe.

[0009] Optionally, support plates are fixedly connected to both left and right sides of the upper surface of the movable block, and upper ends of two groups of support plates are fixedly connected to the connecting plate.

[0010] By adopting the above technical solution, when the movable block descends, the connecting plate is driven to descend simultaneously by the supporting plate.

[0011] Optionally, a second positioning hole is formed at one end of the two groups of connecting plates away from the supporting plate, and the first positioning rod is slidably connected to the second positioning hole.

[0012] By adopting the above technical solution, the first positioning rod slides up and down inside the second positioning hole.

[0013] Optionally, the lower end of the first positioning rod is fixedly connected to the pressing plate, and the lower surface of the pressing plate is fixedly connected with an anti-slip pad.

[0014] By adopting the above technical solution, the first positioning rod positions the position of the pressing plate, and the anti-skid pad improves the anti-skid property of the pressing plate.

[0015] Optionally, a third positioning hole is formed on both the left and right sides of the second positioning hole, and a second positioning rod is slidably connected inside the third positioning hole.

[0016] By adopting the above technical solution, the second positioning rod slides up and down inside the third positioning hole.

[0017] Optionally, the lower end of the second positioning rod is fixedly connected to the upper surface of the pressing plate, and the upper end of the second positioning rod is fixedly connected to a positioning block.

[0018] By adopting the above technical solution, the second positioning rod limits the position of the pressing plate.

[0019] Optionally, the support spring is sleeved on the outside of the first positioning rod, the upper end of the support spring is fixedly connected to the connecting plate, and the lower end of the support spring is fixedly connected to the pressing plate.

[0020] By adopting the above technical solution, the pressing plate is pushed downward during the descent of the connecting plate, so that the pressing plate contacts the surface of the steel pipe and presses it. As the connecting plate continues to descend, the connecting plate slides downward on the surface of the first positioning rod to compress the support spring. The tension generated by the support spring causes the pressing plate to continue to press the steel pipe.

[0021] Optionally, first positioning holes are formed at both left and right ends of the mounting plate, and the upper end of the first positioning rod is slidably connected to the first positioning hole.

[0022] By adopting the above technical solution, when the pressing plate descends, the first positioning rod is driven to slide inside the first positioning hole to limit the position of the connecting plate.

[0023] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0024] The utility model is provided with a bending mechanism on the front side of a fixed box body, and the bending mechanism includes a mounting plate, a hydraulic cylinder, a movable block, a connecting plate, a first positioning rod, a pressing plate and a supporting spring. The movable block is pushed downward by the hydraulic cylinder to press and bend the steel pipe above the supporting roller. At the same time, the pressing plates on both sides are driven to move downward to press the two sides of the steel pipe to avoid the two ends of the steel pipe from warping upward, thereby improving the bending accuracy and solving the problem that the two ends of the steel pipe are prone to warping upward when being bent, thereby reducing the bending accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the support roller structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the bending mechanism of the utility model;

[0028] Figure 4 This is a schematic diagram of the connecting plate structure of the utility model;

[0029] Figure 5 It is a schematic diagram of the pressing plate structure of the utility model.

[0030] Description of reference numerals:

[0031] 1. Equipment box; 11. Support roller; 12. Fixed box; 2. Mounting plate; 21. Hydraulic cylinder; 22. First positioning hole; 23. Movable block; 24. Support plate; 3. Connecting plate; 31. Second positioning hole; 32. Third positioning hole; 33. First positioning rod; 34. Pressing plate; 35. Anti-slip pad; 36. Second positioning rod; 37. Positioning block; 38. Support spring. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] The utility model provides Figure 1 and Figure 2 A bending device for processing civil air defense doors shown in the figure includes an equipment box 1, and three groups of supporting rollers 11 are rotatably connected to the left and right sides of the front surface of the equipment box 1. The upper side of the equipment box 1 is fixedly connected to a fixed box 12, and the front side of the fixed box 12 is provided with a bending mechanism, which includes a mounting plate 2, a hydraulic cylinder 21, a movable block 23, a connecting plate 3, a first positioning rod 33, a pressing plate 34 and a supporting spring 38. The mounting plate 2 is fixedly connected to the front surface of the fixed box 12, the hydraulic cylinder 21 is fixedly installed on the upper side of the mounting plate 2, and the movable block 23 is fixedly connected to the telescopic rod in the hydraulic cylinder 21.

[0034] Among them, gaps for bending are provided between the three groups of support rollers 11 on the left and the three groups of support rollers 11 on the right. The support rollers 11 can be disassembled to adjust the width of the gap, which is used to adjust the bending angle. In specific use, the steel pipe is erected above the support rollers 11, and then the telescopic rod in the hydraulic cylinder 21 presses the movable block 23 downward to bend the steel pipe on the lower side. When the movable block 23 descends, it drives the connecting plates 3 on both sides to move downward, and then the pressing plate 34 is pushed downward by the support spring 38 to tighten the steel pipe.

[0035] See also Figures 3 to 5The left and right sides of the upper surface of the movable block 23 are fixedly connected with support plates 24, the upper ends of the two groups of support plates 24 are fixedly connected to the connecting plate 3, the ends of the two groups of connecting plates 3 away from the support plate 24 are provided with second positioning holes 31, the first positioning rod 33 is slidably connected to the second positioning hole 31, the lower end of the first positioning rod 33 is fixedly connected to the pressing plate 34, the lower surface of the pressing plate 34 is fixedly connected with an anti-slip pad 35, the left and right sides of the second positioning hole 31 are provided with third positioning holes 32, the third positioning holes A second positioning rod 36 is slidably connected inside 32, the lower end of the second positioning rod 36 is fixedly connected to the upper surface of the pressing plate 34, the upper end of the second positioning rod 36 is fixedly connected to the positioning block 37, the support spring 38 is sleeved on the outside of the first positioning rod 33, the upper end of the support spring 38 is fixedly connected to the connecting plate 3, the lower end of the support spring 38 is fixedly connected to the pressing plate 34, the left and right ends of the mounting plate 2 are provided with first positioning holes 22, the upper end of the first positioning rod 33 is slidably connected to the first positioning hole 22.

[0036] Specifically, during the descent of the movable block 23, the connecting plate 3 is driven to move downward by the support plate 24, and the connecting plate 3 pushes the pressing plate 34 downward through the support spring 38. The pressing plate 34 first contacts the two ends of the steel pipe and presses and fixes the two ends of the steel pipe. As the connecting plate 3 and the movable block 23 continue to descend, the connecting plate 3 continues to compress the support spring 38, and the tension generated by the support spring 38 continues to push the pressing plate 34 downward, thereby continuously pressing the two ends of the steel pipe. When the movable block 23 is pressed to the bottom, the support spring 38 is compressed to the extreme, thereby making the two ends of the steel pipe in a stable state during the bending process, thereby preventing the two ends of the steel pipe from warping.

[0037] Working principle of the utility model: in order to improve the stability of the steel pipe during the bending process and improve the bending accuracy, the movable block 23 is pressed downward by the telescopic rod in the hydraulic cylinder 21 to bend the steel pipe on the surface of the support roller 11. When the movable block 23 descends, it drives the connecting plates 3 on both sides to move downward, and then the pressing plate 34 is pushed downward by the supporting spring 38 to press the steel pipe tightly to prevent the two ends of the steel pipe from warping upward, thereby improving the bending accuracy of the steel pipe.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A bending device for processing civil air defense doors, comprising a device housing (1), characterized in that: The left and right sides of the front surface of the equipment box (1) are rotatably connected to three groups of support rollers (11); the upper side of the equipment box (1) is fixedly connected to a fixed box (12); the front side of the fixed box (12) is provided with a bending mechanism, which comprises a mounting plate (2), a hydraulic cylinder (21), a movable block (23), a connecting plate (3), a first positioning rod (33), a pressing plate (34) and a supporting spring (38); the mounting plate (2) is fixedly connected to the front surface of the fixed box (12); the hydraulic cylinder (21) is fixedly mounted on the upper side of the mounting plate (2); and the movable block (23) is fixedly connected to a telescopic rod in the hydraulic cylinder (21).

2. The bending equipment for processing civil air defense doors according to claim 1 is characterized in that: Support plates (24) are fixedly connected to the left and right sides of the upper surface of the movable block (23), and the upper ends of the two groups of support plates (24) are fixedly connected to the connecting plate (3).

3. The bending equipment for processing civil air defense doors according to claim 2 is characterized in that: A second positioning hole (31) is provided at one end of the two groups of connecting plates (3) away from the supporting plate (24), and the first positioning rod (33) is slidably connected to the second positioning hole (31).

4. The bending equipment for processing civil air defense doors according to claim 3 is characterized in that: The lower end of the first positioning rod (33) is fixedly connected to the pressing plate (34), and the lower surface of the pressing plate (34) is fixedly connected with an anti-slip pad (35).

5. The bending equipment for processing civil air defense doors according to claim 4 is characterized in that: A third positioning hole (32) is provided on both the left and right sides of the second positioning hole (31), and a second positioning rod (36) is slidably connected inside the third positioning hole (32).

6. The bending equipment for processing civil air defense doors according to claim 5 is characterized in that: The lower end of the second positioning rod (36) is fixedly connected to the upper surface of the pressing plate (34), and the upper end of the second positioning rod (36) is fixedly connected to a positioning block (37).

7. The bending equipment for processing civil air defense doors according to claim 1 is characterized in that: The support spring (38) is sleeved on the outside of the first positioning rod (33), the upper end of the support spring (38) is fixedly connected to the connecting plate (3), and the lower end of the support spring (38) is fixedly connected to the pressing plate (34).

8. The bending equipment for processing civil air defense doors according to claim 1 is characterized in that: The left and right ends of the mounting plate (2) are each provided with a first positioning hole (22), and the upper end of the first positioning rod (33) is slidably connected to the first positioning hole (22).

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