Pipe piece bolt bending and sizing device

Abstract

The utility model discloses a duct piece bolt bending and sizing device which comprises a machine base, a supporting guide wheel assembly, a push-pull piece and a linear driving unit. The linear driving unit drives the push-pull piece to linearly reciprocate along the center line of the top surface of the machine base, and the two supporting guide wheel assemblies are symmetrically arranged on the two sides of the top surface of the machine base; the two ends of a duct piece bolt needing to be shaped are supported on the supporting guide wheel assemblies, and the push-pull piece pushes or pulls the center position of the duct piece bolt. According to the duct piece bolt bending and correcting device, the duct piece bolt with the unqualified arc shape formed through punching can be subjected to secondary correcting so that the duct piece bolt can meet the requirement, and the number of unqualified products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of segment bolt processing, in particular to a segment bolt bending and straightening device. Background Technique

[0002] When a shield machine is lining a tunnel, multiple segments are assembled. The segments are connected and assembled by bolts to form a cylindrical pipeline, which plays a supporting role for the excavated tunnel. The bolts used to connect and fasten the segments are segment bolts. According to different design requirements and application scenarios, segment bolts can be divided into two types: circumferential and longitudinal. Corresponding segment bolts are divided into two types: straight and arc-shaped. The arc-shaped segment bolts need to be stamped and formed.

[0003] During stamping, the initial straight segment bolts are placed on two roller racks, and the upper die with an arc-shaped protrusion is pressed down. By controlling the pressing amount, arc-shaped segment bolts with appropriate arcs are obtained. During the stamping process, especially in the initial stage of debugging the equipment, it is inevitable to produce some arc-shaped segment bolts with arcs that are either too large or too small and do not meet the requirements. When using an inspection template for detection, they cannot pass the inspection template. At this time, these unqualified products need to be straightened. If the original stamping equipment is still used for straightening, those with small arcs can be stamped a second time, while those with large arcs cannot be processed, resulting in some waste, or it is more troublesome to manually straighten and then stamp again.

[0004] Therefore, it is necessary to develop a segment bolt bending and straightening device to address the above-mentioned defects. Content of the Utility Model

[0005] The purpose of the utility model is to provide a segment bolt bending and straightening device, which can perform secondary straightening on arc-shaped unqualified segment bolts during stamping to make them meet the requirements, reducing unqualified products.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The segment bolt bending and straightening device of the utility model includes a machine base, a support guide wheel assembly, a push-pull member, and a linear drive unit; the linear drive unit drives the push-pull member to linearly reciprocate along the center line of the top surface of the machine base, and the two support guide wheel assemblies are symmetrically arranged on both sides of the top surface of the machine base; both ends of the segment bolt to be straightened are supported on the support guide wheel assembly, and the push-pull member pushes or pulls the central position of the segment bolt.

[0008] Furthermore, the push-pull member includes a push-pull base plate, a slider, a push block head and a pull block head. The machine base is provided with a guide groove along the center line direction. The slider is integrally connected to the bottom of the push-pull base plate and slides along the guide groove; the push block head and the pull block head are respectively fixedly connected to the two ends of the top surface of the push-pull base plate, and the gap between the push block head and the pull block head is greater than the diameter of the segment bolt; the push block head can push the arc top of the segment bolt outward, and the pull block head can pull the arc top of the segment bolt back inward.

[0009] Furthermore, an arc-pushing groove is provided at the position where the push block head contacts the segment bolt; and an arc-pulling groove is provided at the position where the pull block head contacts the segment bolt.

[0010] Furthermore, the number of the sliders is two, and the two sliders are respectively located at two ends of the bottom surface of the push-pull substrate; the slider is a T-shaped slider, and the corresponding guide groove is a T-shaped slide groove.

[0011] Furthermore, the support guide wheel assembly includes a support shaft and a guide wheel, the support shaft is vertically fixedly connected to the top surface of the machine base, and the guide wheel is rotatably connected to the top end of the support shaft; a guide wheel ring groove for accommodating the segment bolts is provided on the outer wheel surface of the guide wheel.

[0012] Furthermore, the root of the support shaft is interference-connected in the through hole of the base plate, and the bottom end of the support shaft is provided with a step to prevent it from falling out.

[0013] Furthermore, the linear drive unit specifically adopts an action cylinder, and the action cylinder is installed on the machine base through a bracket plate; the piston rod end of the action cylinder is fixedly connected to the rear of the push-pull member.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] The utility model of the segment bolt bending and shaping device can realize the correction of two situations: insufficient curvature and excessive curvature by setting a push-pull member to push or pull the arc top position of the segment bolt; the two ends of the segment bolt are symmetrically supported by the two support guide wheel assemblies, so that the segment bolt can be moved during the shaping process without hard bending, and the shaping effect is good. The utility model of the segment bolt bending and shaping device can perform secondary shaping on the segment bolts with unqualified arcs after stamping to meet the requirements, thereby reducing unqualified products.

[0016] In addition, by guiding and sliding through the cooperation of the slider and the guiding groove, it can ensure that the pushing and pulling member always acts on the crown of the segment bolt without deviation; the gap between the pushing block head and the pulling block head facilitates the smooth insertion of the segment bolt to be shaped; through the opening of the pushing arc groove and the pulling arc groove, it can prevent the segment bolt from slipping outwards when receiving the pushing or pulling force; by respectively arranging a slider at both ends of the bottom surface of the pushing and pulling substrate, it ensures a large enough contact span between the slider and the guiding groove to avoid folding. The guide wheel is supported by the support shaft, with high support strength and good stability; through the setting of the guide wheel ring groove, it can accommodate the rod end of the segment bolt to avoid slipping outwards during shaping. Brief Description of the Drawings

[0017] The following further describes the present invention with reference to the accompanying drawings.

[0018] Figure 1 Schematic diagram of the segment bolt bending and shaping device of the present invention in the state of pushing the segment bolt;

[0019] Figure 2 Schematic diagram of the segment bolt bending and shaping device of the present invention in the state of pulling back the segment bolt;

[0020] Figure 3 Left view structural schematic diagram of the segment bolt bending and shaping device of the present invention;

[0021] Figure 4 Front view structural schematic diagram of the pushing and pulling member in the present invention.

[0022] Description of the reference numerals: 1, machine base; 101, guiding groove; 102, support plate; 2, support shaft; 3, guide wheel; 301, guide wheel ring groove; 4, pushing and pulling member; 401, slider; 402, pushing block head; 4021, pushing arc groove; 403, pulling block head; 4031, pulling arc groove; 5, elastic retaining ring; 6, acting cylinder; 7, segment bolt. Detailed Description of the Invention

[0023] The core of the present invention is to provide a segment bolt bending and shaping device, which can perform secondary shaping on the segment bolts with unqualified arc-shaped stamping to meet the requirements, reducing the number of unqualified products.

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present 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 should not be construed as a limitation on the present utility model.

[0026] Referring to the accompanying drawings, Figure 1 is a schematic diagram of the state of pushing the segment bolt by the segment bolt bending and straightening device of the present utility model; Figure 2 is a schematic diagram of the state of pulling back the segment bolt by the segment bolt bending and straightening device of the present utility model;

[0027] Figure 3 is a left view structural schematic diagram of the segment bolt bending and straightening device of the present utility model; Figure 4 is a front view structural schematic diagram of the push-pull member in the present utility model.

[0028] In a specific embodiment, as Figures 1 to 4 shown, the segment bolt bending and straightening device of the present utility model includes a machine base 1, a support guide wheel assembly, a push-pull member 4 and a linear drive unit. The machine base 1 is a square plate-shaped part, and the linear drive unit drives the push-pull member 4 to move linearly back and forth along the center line of the top surface of the machine base 1. The two support guide wheel assemblies are symmetrically arranged on both sides of the top surface of the machine base 1. The two ends of the segment bolt 7 to be straightened are supported on the support guide wheel assembly, that is, during straightening, the segment bolt 7 is symmetrically placed on the support guide wheel assembly, and the push-pull member 4 pushes or pulls the central position, that is, the crown position, of the segment bolt 7.

[0029] It should be noted that Figure 1 and Figure 2 take the double-headed arc segment bolt as an example for illustration. In fact, the hexagon head arc segment bolt can also be straightened by the present utility model completely. The content shown in the drawings shall not be regarded as a limitation on the protection scope of the present utility model.

[0030] In a specific embodiment of the present utility model, as Figure 1 and Figure 2 shown, the linear drive unit specifically adopts an actuating cylinder 6, and the actuating cylinder 6 is installed on the machine base 1 through a support plate 102. The actuating cylinder 6 can be a hydraulic cylinder or an electric cylinder. The end of the piston rod of the actuating cylinder 6 is fixedly connected to the rear part of the push-pull member 4, and the end of the piston rod is connected to the tail of the push-pull substrate in a gland way.

[0031] By setting the push-pull member 4 to push or pull the arc top position of the segment bolt 7, the correction of the two situations of insufficient arc and excessive arc can be achieved; by symmetrically supporting the two ends of the segment bolt 7 by the two supporting guide wheel assemblies, the segment bolt 7 can be moved during the correction process without hard bending, and the correction effect is good. The segment bolt bending and correction device of the utility model can perform secondary correction on the segment bolts with unqualified arcs after stamping to meet the requirements, thereby reducing unqualified products.

[0032] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the push-pull member 4 includes a push-pull base plate, a slider 401, a push block head 402 and a pull block head 403. The base 1 is provided with a guide groove 101 along the center line direction, and the slider 401 is integrally connected to the bottom of the push-pull base plate and guides and slides along the guide groove 101. The push block head 402 and the pull block head 403 are respectively fixedly connected to the front and rear ends of the top surface of the push-pull base plate, and the gap between the push block head 402 and the pull block head 403 is greater than the diameter of the segment bolt 7. The push block head 402 can push the top of the segment bolt 7 outward, and the pull block head 403 can pull the top of the segment bolt 7 inward.

[0033] Specifically, if Figure 4 As shown, the push block head 402 is provided with an arc-pushing groove 4021 at the position where it contacts the segment bolt 7. The pull block head 403 is provided with an arc-drawing groove 4031 at the position where it contacts the segment bolt 7. The cross-sectional curvature of the arc-pushing groove 4021 and the arc-drawing groove 4031 is adapted to the outer wall of the segment bolt 7. The height positions of the arc-pushing groove 4021 and the arc-drawing groove 4031 are adapted to the support height of the support guide wheel assembly.

[0034] Specifically, if Figure 3 and Figure 4 As shown, there are two sliders 401, and the two sliders 401 are respectively located at the two ends of the bottom surface of the push-pull base plate. The slider 401 is a T-shaped slider, and the corresponding guide groove 101 is a T-shaped slide groove. Obviously, the guide groove 101 and the slider 401 can also use the matching mode of dovetail groove and dovetail block, and similar simple deformation modes all fall within the protection scope of the present utility model.

[0035] By cooperating and guiding the sliding of the slider 401 and the guide groove 101, it can be ensured that the push-pull member 4 always acts on the arc top of the pipe segment bolt 7 without deflection; the gap between the push block head 402 and the pull block head 403 facilitates the smooth insertion of the pipe segment bolt 7 that needs to be shaped; the opening of the arc pushing groove 4021 and the arc pulling groove 4031 can prevent the pipe segment bolt 7 from not falling out when receiving the pushing or pulling force; by arranging a slider 401 at each end of the bottom surface of the push-pull substrate, it is ensured that there is a sufficiently large contact span between the slider 401 and the guide groove 101 to avoid folding.

[0036] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the support guide wheel assembly includes a support shaft 2 and a guide wheel 3. The support shaft 2 is vertically fixedly connected to the top surface of the machine base 1, and the guide wheel 3 is rotatably connected to the top of the support shaft 2. The center hole of the guide wheel 3 is gap-fitted at the top of the support shaft 2. There is no need to install bearings, which ensures that the support shaft 2 has a larger diameter. A card slot is provided at the end of the support shaft 2 and an elastic retaining ring 5 is installed to prevent the guide wheel 3 from falling off. A guide wheel ring groove 301 is provided on the outer wheel surface of the guide wheel 3 to accommodate the segment bolts 7. The height of the guide wheel ring groove 301 is consistent with the arc pushing groove 4021 and the arc pulling groove 4031.

[0037] Specifically, if Figure 3 As shown, the root of the support shaft 2 is inserted into the through hole of the base 1 plate with interference fit, and the bottom end of the support shaft 2 is provided with a step to prevent it from falling out, and the corresponding through hole of the base 1 is a step hole.

[0038] The guide wheel 3 is supported by the support shaft 2, and has high support strength and good stability; the setting of the guide wheel ring groove 301 can accommodate the rod end of the segment bolt 7 to prevent it from falling out during shape adjustment.

[0039] |The working process of the segment bolt bending and shaping device of this embodiment: First, determine whether the unqualified segment bolt 7 has a too large or too small curvature by inserting the inspection template, and divide it into two categories accordingly. For the segment bolt 7 with a too small curvature, drive the action cylinder 6 to pull the push-pull member 4 backward to make it enter the pushing and jacking station, install the segment bolt 7, and the two ends of the segment bolt 7 are supported behind the guide wheel 3 and enter the guide wheel ring groove 301. The arc top of the segment bolt 7 passes through the gap between the push block head 402 and the pull block head 403 and falls into the arc pushing groove 4021. Start the action cylinder 6 to push forward, and the segment bolt 7 produces plastic deformation under the pushing and jacking action of the push block head 402, increasing the forming curvature. After visually passing, stop the action cylinder 6 and return slightly, remove the segment bolt 7 and use the inspection template until it is qualified, otherwise continue to shape. For the segment bolts 7 with too large curvature, drive the action cylinder 6 to push the push-pull member 4 forward to make it enter the pull-back station, install the segment bolts 7, support the two ends of the segment bolts 7 in front of the guide wheel 3 and enter the guide wheel ring groove 301, and the arc top of the segment bolts 7 passes through the gap between the push block head 402 and the pull block head 403 and falls into the arc groove 4031. Start the action cylinder 6 to pull the push block head 402 backward, and the segment bolts 7 will produce plastic deformation under the pull-back action of the push block head 402, reducing the forming curvature. After visual inspection, stop the action cylinder 6 and slightly return, remove the segment bolts 7 and use the inspection template until they are qualified, otherwise continue to calibrate.

[0040] In summary, the segment bolt bending and shaping device of the utility model can realize the correction of two situations: insufficient curvature and excessive curvature by setting the push-pull member 4 to push or pull the arc top position of the segment bolt 7; the two ends of the segment bolt 7 are symmetrically supported by the two support guide wheel assemblies, so that the segment bolt 7 can be moved during the shaping process without hard bending, and the shaping effect is good. The segment bolt bending and shaping device of the utility model can perform secondary shaping of the segment bolts with unqualified arcs by stamping to meet the requirements, thereby reducing unqualified products. In addition, by cooperating with the slide block 401 and the guide groove 101 for guiding and sliding, it can be ensured that the push-pull member 4 always acts on the arc top of the segment bolt 7 without deflection; by the gap between the push block head 402 and the pull block head 403, it is convenient to smoothly put the segment bolt 7 that needs to be shaped; by the opening of the arc pushing groove 4021 and the arc pulling groove 4031, it can prevent the segment bolt 7 from not falling out when receiving the push-up or pull-back force; by setting a slide block 401 at both ends of the bottom surface of the push-pull base plate, it is ensured that there is a sufficiently large contact span between the slide block 401 and the guide groove 101 to avoid folding. The guide wheel 3 is supported by the support shaft 2, with high support strength and good stability; by setting the guide wheel annular groove 301, it can accommodate the rod end of the segment bolt 7 to prevent it from falling out during shaping.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A segment bolt bending and straightening device, characterized in that, It comprises a machine base (1), a support guide wheel assembly, a push-pull member (4) and a linear drive unit; the linear drive unit drives the push-pull member (4) to linearly reciprocate along the center line of the top surface of the machine base (1); two support guide wheel assemblies are symmetrically arranged on both sides of the top surface of the machine base (1); both ends of the segment bolts (7) to be calibrated are supported on the support guide wheel assemblies, and the push-pull member (4) pushes or pulls the center position of the segment bolts (7).

2. The segment bolt bending and straightening device according to claim 1, wherein The push-pull member (4) comprises a push-pull base plate, a slider (401), a push block head (402) and a pull block head (403); the machine base (1) is provided with a guide groove (101) along the center line direction; the slider (401) is integrally connected to the bottom of the push-pull base plate and slides along the guide groove (101); the push block head (402) and the pull block head (403) are respectively fixedly connected to the two ends of the top surface of the push-pull base plate; the gap between the push block head (402) and the pull block head (403) is larger than the diameter of the segment bolt (7); the push block head (402) can push the top of the segment bolt (7) outward, and the pull block head (403) can pull the top of the segment bolt (7) inward.

3. The segment bolt bending and straightening device according to claim 2, wherein, An arc pushing groove (4021) is provided at the position where the pushing block head (402) contacts the segment bolt (7); and an arc pulling groove (4031) is provided at the position where the pulling block head (403) contacts the segment bolt (7).

4. The segment bolt bending and straightening device according to claim 2, characterized in that The number of the sliders (401) is two, and the two sliders (401) are respectively located at two ends of the bottom surface of the push-pull base plate; the slider (401) is a T-shaped slider, and the corresponding guide groove (101) is a T-shaped slide groove.

5. The segment bolt bending and straightening device according to claim 1, characterized in that, The support guide wheel assembly comprises a support shaft (2) and a guide wheel (3); the support shaft (2) is vertically fixedly connected to the top surface of the machine base (1); the guide wheel (3) is rotatably connected to the top end of the support shaft (2); and a guide wheel ring groove (301) for accommodating the segment bolts (7) is provided on the outer wheel surface of the guide wheel (3).

6. The segment bolt bending and straightening device according to claim 5, characterized in that, The root of the support shaft (2) is interference-connected in the through hole of the base (1) plate, and the bottom end of the support shaft (2) is provided with a step to prevent it from falling out.

7. The segment bolt bending and straightening device according to claim 1, characterized in that, The linear drive unit specifically adopts an action cylinder (6), and the action cylinder (6) is installed on the machine base (1) through a bracket plate (102); the piston rod end of the action cylinder (6) is fixedly connected to the rear of the push-pull member (4).

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