Pneumatic forming device for bending stirrups

Abstract

The utility model relates to the field of metal processing, and provides a stirrup bending pneumatic forming device which comprises a rack, a driving part, a push rod and a stirrup positioning plate. The driving part is installed at one end of the rack and extends out by a preset distance in the horizontal direction of the rack. The stirrup positioning plate is installed on the rack and connected with stirrups in a clamped mode so that the stirrups can be fixed. The push rod is connected with the output end of the driving part, the driving direction of the driving part is consistent with the extending direction of the rack, after the stirrup is clamped into the stirrup positioning plate, the driving part drives the push rod to move towards the stirrup, and the stirrup is pressed to be bent along the main reinforcement. The stirrup bending device has the effect of conveniently bending stirrups.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal processing, in particular to a stirrup bending pneumatic forming device. BACKGROUND

[0002] In the shield segment steel reinforcement cage, the assembly of the inner and outer arc main reinforcement and the stirrup wrapped therearound has always been a big problem.

[0003] According to the design drawings and the requirements of the relevant specifications, the bending angle of the stirrup end hook should not be less than 135°, and the length after bending should not be less than 10 times the diameter of the stirrup.

[0004] And the 135° hook brings great trouble to the sleeving of the inner and outer arc main reinforcement, basically it is difficult to sleeve, so the method currently used in the industry is still to use a 90° hook, and to perform carbon dioxide shielded welding on the end of the bent stirrup and the main stirrup, that is, to make a welded closed ring type stirrup, so that each stirrup needs a welding length, which causes great adverse effects on the production progress and quality of the steel reinforcement cage, is time-consuming and laborious, and the welding quality is not optimistic. SUMMARY

[0005] In order to improve the above problems, the present application provides a stirrup bending pneumatic forming device.

[0006] The stirrup bending pneumatic forming device provided by the present application adopts the following technical scheme:

[0007] A stirrup bending pneumatic forming device, comprising a rack, a driving member, a push rod and a stirrup positioning plate; the driving member is installed at one end of the rack and extends out a preset distance in the horizontal direction of the rack; the stirrup positioning plate is installed on the rack and is engaged with the stirrup to provide fixation of the stirrup; the push rod is connected with the output end of the driving member, and the driving direction of the driving member is consistent with the extension direction of the rack; after the stirrup is engaged into the stirrup positioning plate, the driving member drives the push rod to move towards the stirrup, and the stirrup is bent along the main reinforcement under pressure.

[0008] By adopting the above technical scheme, the rack is attached to the main reinforcement, and then the stirrup is engaged into the stirrup positioning plate, so that the position is accurate when the stirrup is bent, the driving member drives the push rod to move towards the stirrup, and the stirrup is bent along the main reinforcement under pressure, thereby bending and forming the stirrup, saving time and effort, and achieving the effect of conveniently bending the stirrup.

[0009] Optionally, a positioning groove is formed on the stirrup positioning plate; the stirrup is engaged into the positioning groove; and the stirrup positioning plate is provided with at least two groups.

[0010] By adopting the technical scheme, the at least two groups of stirrup positioning plates can provide two-point clamping effects on the stirrup, improve the fastening and further increase the accuracy of the relative position of the push rod and the stirrup, when the stirrup positioning plate is inserted into the stirrup through the positioning groove, the cylinder push rod can be ensured to be aligned with the stirrup to be bent, and precise bending is realized.

[0011] Optionally, the rack is further provided with a main bar buckle plate; the main bar buckle plate is connected with the main bar.

[0012] By adopting the technical scheme, the main bar is buckled by the main bar buckle, so that when the stirrup is bent, the reaction force of the bent stirrup is transmitted to the main bar through the main bar buckle plate and the rack, the main bar is used for auxiliary bearing and force bearing, the physical consumption of the employees is reduced, and the processing efficiency of the subsequent stirrup is improved.

[0013] Optionally, the main bar buckle plate is provided with two groups.

[0014] By adopting the technical scheme, the two groups of main bar buckle plates further improve the fastening with the main bar, can further prevent the reaction force from driving the whole forming device to rotate when the stirrup is bent, and improve the stability of the forming device when the stirrup is bent.

[0015] Optionally, the main bar buckle plate is an L-shaped plate, and the connection mode with the rack is bolt fastening.

[0016] By adopting the technical scheme, the main bar is clamped between the main bar buckle plate and the rack by the L-shaped structure, to provide the stability of reaction force transmission, and the bolt fastening connection mode can adapt to different diameters and thicknesses of the steel bar framework.

[0017] Optionally, the push rod is further provided with a detachable push head at the end away from the driving piece.

[0018] By adopting the technical scheme, the stirrup can be embedded in the push head, and then the push head is driven by the push rod and the driving piece to push the stirrup to complete the bending effect, so as to ensure the accuracy and stability of the bending effect, and the detachable mode can facilitate the disassembly and replacement of the push head of different widths, so as to adapt to stirrups of different diameters.

[0019] Optionally, the rack is provided with a holding handle on the side away from the driving piece.

[0020] By adopting the technical scheme, the holding handle can be conveniently held by the employees, and a fulcrum for holding is provided.

[0021] Optionally, the rack further comprises a portal frame and an elastic rope; one end of the elastic rope is connected with the portal frame, and the other end is connected with the rack.

[0022] By adopting the technical scheme, the rack can be used in cooperation with the elastic rope and the gantry, the elastic rope can provide elastic force after connecting the rack and the gantry, the elastic rope can facilitate the rack to be hung, and the elastic rope can also provide elastic force, so that the elastic force can provide auxiliary force, so that the staff can be partially supported by the elastic rope when bending the stirrup, and the effect of saving labor is further achieved.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The rack is attached to the main reinforcement, and then the stirrup is clamped into the stirrup positioning plate, so that the position is accurate when bending the stirrup, the driving member drives the push rod to move towards the stirrup, the stirrup is bent along the main reinforcement under pressure, so that the stirrup is bent and formed, time and labor are saved, and the effect of bending the stirrup conveniently is achieved;

[0025] 2. The at least two groups of stirrup positioning plates can provide two-point clamping effect for the stirrup, improve the fastening property, and further increase the accuracy of the relative position of the push rod and the stirrup, when the stirrup positioning plate is inserted into the stirrup through the positioning groove, the cylinder push rod can be aligned with the stirrup to be bent, and precise bending is achieved;

[0026] 3. The main reinforcement is buckled by the main reinforcement buckle, so that when the stirrup is bent, the reaction force of the bent stirrup is transmitted to the main reinforcement through the main reinforcement buckle and the rack, the main reinforcement is used for auxiliary bearing and force bearing, the physical exertion of the staff is reduced, and the processing efficiency of the subsequent stirrup is improved;

[0027] 4. The two groups of main reinforcement buckles further improve the fastening property of the connection with the main reinforcement, can further prevent the reaction force from driving the entire forming device to rotate when the stirrup is bent, and improves the stability of the forming device when the stirrup is bent. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a front view structural schematic diagram of a forming device in an embodiment of the present application;

[0029] Figure 2 is a side view structural schematic diagram of a forming device in some embodiments of the present application;

[0030] Figure 3 is a first cross-sectional structural schematic diagram of a stirrup positioning plate in some embodiments of the present application;

[0031] Figure 4 is a second cross-sectional structural schematic diagram of a stirrup positioning plate in some embodiments of the present application;

[0032] Figure 5 is a three-dimensional structural schematic diagram of a main reinforcement buckle in some embodiments of the present application;

[0033] Figure 6is a schematic diagram of a front view of a forming device in a running state in some embodiments of the present application;

[0034] The marks in the drawings are: 1, rack, 2, driving part, 3, push rod, 31, push head, 4, stirrup positioning plate, 41, positioning groove, 42, first positioning plate, 43, second positioning plate, 44, screw rod, 5, main reinforcement buckle plate, 6, holding handle, 7, portal, 8, elastic rope. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in detail with specific examples below, and those skilled in the art can easily understand other advantages and effects of the present application from the messages disclosed in the present application. The present application can also be implemented or applied in other different specific embodiments, and the details in the present application can be modified or changed according to different views and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0036] The embodiments of the present application will be described in detail with specific examples below, and those skilled in the art can easily understand other advantages and effects of the present application from the messages disclosed in the present application. The present application can also be implemented or applied in other different specific embodiments, and the details in the present application can be modified or changed according to different views and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the present application, the expressions of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics expressed in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics expressed can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples expressed in the present application without conflict.

[0038] In addition, the terms "first", "second" are only used to express the object, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the expression of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0039] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0041] This application discloses a pneumatic forming device for bending stirrups.

[0042] A pneumatic forming device for bending stirrups is used in the steel reinforcement skeleton of tunnel segments to assemble the main reinforcement bars of the inner and outer arcs and the stirrups that wrap around them.

[0043] refer to Figure 1 and Figure 2 As shown, it includes a frame 1, a drive component 2, a push rod 3, and a stirrup positioning plate 4; the drive component 2 is installed at one end of the frame 1 and extends a preset distance along the horizontal direction of the frame 1. The drive component 2 can be a cylinder, such as a standard cylinder with a cylinder diameter of Ø150, a piston rod stroke of up to 100mm, a working pressure of 0.8MPa, and a bending torque of up to 1000N·M, which can meet the bending forming of round steel HPB300Ø8-Ø10.

[0044] The stirrup positioning plate 4 is installed on the frame 1 and is snapped into the stirrup to fix the stirrup. The stirrup positioning plate 4 snaps into the part of the stirrup that is not required to be bent, which can prevent the stirrup from shifting when bending. At the same time, it can also determine the position of the stirrup and ensure the accurate position during the bending process.

[0045] The push rod 3 is connected to the output end of the drive component 2, and the driving direction of the drive component 2 is consistent with the extension direction of the frame 1. The extension direction of the push rod 3 allows the drive component 2 to drive the push rod 3 to move toward the required bending section of the stirrup, so that the push rod 3 applies pressure to the stirrup.

[0046] Specifically, the frame 1 is pressed against the main reinforcement, and then the stirrup is inserted into the stirrup positioning plate 4 to ensure accurate positioning when bending the stirrup. The drive component 2 drives the push rod 3 to move toward the stirrup, and the stirrup is bent along the main reinforcement under pressure, thereby bending the stirrup into shape, saving time and effort, and achieving the function of conveniently bending the stirrup.

[0047] Further reference Figure 3 As shown, the stirrup positioning plate 4 has a positioning groove 41. The stirrup is inserted into the positioning groove 41. The central axis of the stirrup positioning plate 4 is consistent with the axis of the push rod 3. When the stirrup positioning plate 4 is inserted into the stirrup through the positioning groove 41, it can ensure that the cylinder push rod 3 is aligned with the stirrup to be bent, so as to achieve precise bending.

[0048] The stirrup positioning plate 4 is provided in at least two groups, and the at least two groups of stirrup positioning plates 4 can provide two-point clamping effects on the stirrup, improve the fastening, further increase the accuracy of the relative position of the push rod 3 and the stirrup, and ensure that the push rod 3 can more accurately contact the stirrup when descending.

[0049] The main reinforcement positioning plate is similar in structure to the stirrup positioning plate 4 and will not be described herein again, and is mainly used for positioning the position of the main reinforcement. The main reinforcement positioning plate and the stirrup positioning plate 4 are connected to the rack 1 in a bolt fastening connection mode.

[0050] On the other hand, as shown in Figure 4 The stirrup positioning plate 4 can also have a structure of two positioning plates, namely a first positioning plate 42 and a second positioning plate 43. The first positioning plate 42 is an L-shaped plate, and the inner wall is provided with a sliding groove. The second positioning plate 43 is connected to the first positioning plate 42 in a sliding connection mode through the sliding groove and is limited in the sliding groove. The first positioning plate 42 is pivotally connected to a screw rod 44. The second positioning plate 43 is provided with a threaded hole. The screw rod 44 penetrates the threaded hole and is screwed with the second positioning plate 43.

[0051] With the rotation of the screw rod 44, the second positioning plate 43 can move along the sliding groove towards the first positioning plate 42, so as to adjust the distance between the first positioning plate 42 and the second positioning plate 43. The stirrup can be clamped into the clamping groove between the first positioning plate 42 and the second positioning plate 43. The distance, i.e. the width of the clamping groove, can be adjusted through the screw rod 44, so as to adapt to stirrups of different diameters.

[0052] In some embodiments, as shown in Figure 2 The rack 1 is also provided with a main reinforcement clamping plate 5. The main reinforcement clamping plate 5 is clamped with the main reinforcement. The main reinforcement clamping plate 5 is used to connect the rack 1 and the main reinforcement through the main reinforcement clamping plate 5. When the driving member 2 drives the push rod 3 to bend the stirrup, the rack 1 will be subjected to a reaction force. If only the employees hold the rack 1 by themselves, the force consumed will be too large, which will affect the subsequent processing of multiple stirrups.

[0053] Therefore, the main reinforcement clamping plate 5 is arranged on the rack 1. The main reinforcement is clamped by the main reinforcement clamping plate 5. When the stirrup is bent, the reaction force of the stirrup bending is transmitted to the main reinforcement through the main reinforcement clamping plate 5 and the rack 1. The main reinforcement is used for auxiliary bearing and force bearing, which reduces the physical consumption of the employees and improves the processing efficiency of the subsequent stirrups.

[0054] Further, as shown in Figure 2 The main reinforcement clamping plate 5 is provided in two groups and is arranged above and below the rack 1, respectively. The two main reinforcement clamping plates 5 correspondingly clamp the inner arc and outer arc main reinforcements, respectively. The upper main reinforcement clamping plate 5 corresponds to the outer arc main reinforcement, and the lower main reinforcement clamping plate 5 corresponds to the inner arc main reinforcement.

[0055] Two groups of main reinforcement buckling plate 5 further improve the fastening of the main reinforcement connection, which can further prevent the reaction force from driving the entire forming device to rotate when the stirrup is bent, and improve the stability of the forming device when bending the stirrup.

[0056] Further, referring to Figure 5 The main reinforcement buckling plate 5 is an L-shaped plate, and the main reinforcement can be clamped at the corner of the L-shaped corner, and there is a gap between the L-shaped corner and the rack 1, and the gap distance is greater than or equal to the diameter of the main reinforcement, so that the main reinforcement is clamped between the main reinforcement buckling plate 5 and the rack 1, to provide stability for the transmission of the reaction force.

[0057] The connection between the main reinforcement buckling plate 5 and the rack 1 adopts a bolt fastening assembly, which can adapt to different main reinforcement diameters and different thicknesses of the reinforcement framework. The gap distance between the upper and lower main reinforcement buckling plates 5 is the gap distance between the inner and outer arc main reinforcements. A plurality of threaded holes can be provided on the rack 1, so as to adjust the position of the main reinforcement buckling plate 5, so as to adjust the distance between the two main reinforcement buckling plates 5, and adapt to different diameters of the main reinforcement and the gap distance between the inner and outer arcs.

[0058] In some embodiments, referring to Figure 1 Or Figure 2 The push rod 3 away from the driving member 2 is also provided with a detachable push head 31, and a clamping groove matching the diameter of the stirrup is formed at the end of the push head 31 close to the stirrup, so that the stirrup can be embedded in the push head 31. The push rod 3 cooperates with the driving member 2 to drive the push head 31 to push the stirrup to complete the bending effect, ensuring the accuracy and stability of the bending effect, and the detachable mode can facilitate the disassembly and removal of the push head 31 and the replacement of the push head 31 with different clamping groove widths, thereby adapting to different diameters of the stirrup.

[0059] The detachable mode can be bolted.

[0060] In some embodiments, the rack 1 away from the driving member 2 is provided with a holding handle 6, which can be easily held by employees, providing a fulcrum for holding. When the forming device is not needed, the forming device can also be suspended as a whole through the holding handle 6, saving floor space.

[0061] In some embodiments, referring to Figure 6 It also includes a portal frame 7 and an elastic rope 8. One end of the elastic rope 8 is connected to the portal frame 7, and the other end is connected to the rack 1. The rack 1 can be used with the elastic rope 8 and the portal frame 7. After the rack 1 and the portal frame 7 are connected by the elastic rope 8, the elastic rope 8 can provide a spring effect, which can facilitate the suspension of the rack 1. At the same time, the elastic rope 8 also provides a spring effect, which can provide auxiliary force, so that employees can provide partial support through the elastic rope 8 when bending the stirrup, further achieving the effect of saving labor.

[0062] The portal frame 7 can be moved to the pipe segment stirrup installation station, after the main reinforcement and the stirrup sleeve are completed and positioned, the bending operation of the other limb of the stirrup can be performed.

[0063] The staff pulls down the rack 1 from the portal frame 7 by the elastic rope, inserts the stirrup positioning plate 4 on the device into the pre-bent stirrup, then slightly loosens the device, the rack 1 is moved upward along the stirrup under the action of the elastic rope, and the main reinforcement buckle plate 5 buckles the main reinforcement.

[0064] The driving member 2 is opened, the driving member 2 drives the push rod 3 to move towards the stirrup, one limb of the stirrup is rotated and bent 45° around the main reinforcement, so as to complete the on-site bending operation of the stirrup.

[0065] The driving member 2 is closed, the driving member 2 drives the push rod 3 to retract, the rack 1 is pulled down by one reinforcement space, the main reinforcement buckle plate 5 is separated from the main reinforcement, and the rack 1 is horizontally withdrawn backward, under the action of the elastic rope, the rack 1 is automatically returned to the high position of the portal frame 7, and the above operation is repeated to bend each stirrup.

[0066] The embodiments of the specific embodiment are the preferred embodiments of the application, and are not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A pneumatic forming device for bending stirrup, characterized by, Including frame (1), driving part (2), push rod (3) and stirrup positioning plate (4), driving part (2) is installed in one end of frame (1), and extends along the horizontal direction of frame (1) by preset distance, stirrup positioning plate (4) is installed in frame (1), and is connected with stirrup, provides the fixation of stirrup, push rod (3) is connected with the output end of driving part (2), and the driving direction of driving part (2) is consistent with the extension direction of frame (1), after stirrup is connected into stirrup positioning plate (4), driving part (2) drives push rod (3) towards stirrup, and stirrup is bent along main reinforcement under pressure.

2. A device for the pneumatic forming of stirrup bends according to claim 1, characterized in that Positioning groove (41) is formed in stirrup positioning plate (4), and stirrup is connected into positioning groove (41), and stirrup positioning plate (4) is provided with at least two groups.

3. A device for the pneumatic forming of stirrup bends according to claim 2, characterized in that Frame (1) is further provided with main reinforcement buckle plate (5), and main reinforcement buckle plate (5) is connected with main reinforcement.

4. A device for the pneumatic forming of stirrup bends according to claim 3, characterized in that Main reinforcement buckle plate (5) is provided with two groups.

5. A device for the pneumatic forming of stirrup bends according to claim 4, characterized in that Main reinforcement buckle plate (5) is L-shaped plate, and the connection mode of main reinforcement buckle plate (5) and frame (1) is bolt fastening.

6. A device for the pneumatic forming of stirrup bends according to claim 1, characterized in that The end of push rod (3) away from driving part (2) is further provided with detachable push head (31).

7. A device for the pneumatic forming of stirrup bends as defined in claim 1, characterized in that The side of frame (1) away from driving part (2) is provided with holding handle (6).

8. A device for the pneumatic forming of stirrup bends according to claim 1, characterized in that Further including portal (7) and elastic rope (8), one end of elastic rope (8) is connected with portal (7), and the other end is connected with frame (1).

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