Tunnel construction profile bending device

Abstract

The invention particularly relates to a tunnel construction profile bending device, and belongs to the technical field of profile machining. Comprising a seat body, a force applying assembly, a supporting assembly and two limiting assemblies. The force applying assembly and the supporting assembly are oppositely arranged in the first direction, the supporting assembly comprises a first rotating arm and a second rotating arm, the first rotating arm and the second rotating arm are rotationally connected to the base body, the first rotating arm and the second rotating arm are arranged in a crossed mode and oppositely arranged in the second direction, and the first direction is perpendicular to the second direction; the first rotating arm is provided with a plurality of limiting parts at intervals in the length direction of the first rotating arm, the limiting parts are movably connected to the first rotating arm in the second direction, and the second rotating arm is arranged between every two adjacent limiting parts. And the limiting part is used for limiting the first rotating arm and the second rotating arm, so that the distance between the intersection of the first rotating arm and the second rotating arm and the force application assembly can be adjusted, the bending degree of the profile can be adjusted, and the application range of the device is widened.

Description

Technical Field

[0001] The invention belongs to the technical field of profile processing, and in particular relates to a tunnel construction profile bending device. Background Art

[0002] Some profiles need to be bent during processing, manufacturing, installation and use. For example, in the field of tunnel construction, tunnel support often uses arch frames, which are structures formed by connecting multiple sections of arc-shaped I-beams. However, I-beams are straight structures when they leave the factory, so they need to be bent.

[0003] The disadvantages of some current bending devices are that the adjustment range of the bending amplitude is limited. At the same time, it is not convenient to perform some special-shaped bending, which reduces the application range of the bending device. Summary of the Invention

[0004] The object of the present invention is to provide a tunnel construction profile bending device, which has the advantage of a wide range of applications.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is as follows: The embodiment of the present application provides a tunnel construction profile bending device, including a base, a force-applying assembly, a support assembly and two limit assemblies. The force-applying assembly and the support assembly are arranged relative to each other along the first direction, and the support assembly includes a first rotating arm and a second rotating arm. The first rotating arm and the second rotating arm are rotatably connected to the base, and the first rotating arm and the second rotating arm are arranged crosswise. The first rotating arm and the second rotating arm are arranged relative to each other along the second direction. The first direction is perpendicular to the second direction. Along the length direction of the first rotating arm, the first rotating arm is provided with a plurality of limit parts at intervals. The limit parts are movably connected to the first rotating arm along the second direction, and the second rotating arm is arranged between two adjacent limit parts. The two limit assemblies are arranged at intervals on the base along the third direction. The first direction, the second direction and the third direction are perpendicular to each other. The force-applying assembly and the support assembly are arranged between the two limit assemblies.

[0006] In some embodiments, the limiting assembly includes a sliding seat and a sliding portion. The sliding seat is connected to the seat body, and the sliding portion is movably connected to the sliding seat along the third direction, and the sliding portion is provided with a positioning groove.

[0007] In some embodiments, the sliding portion is sleeved on the outer peripheral wall of the sliding seat, the sliding portion is threadedly connected to the locking portion, and the locking portion abuts against the sliding seat.

[0008] In some embodiments, the force-applying assembly includes a hydraulic cylinder and a pressure-applying portion. The hydraulic cylinder is connected to the base, and includes a movable end that moves along a first direction. The pressure-applying portion is connected to the movable end.

[0009] In some embodiments, the first rotating arm is rotatably connected to the control part, the first rotating arm is provided with a sliding hole, the axial direction of the sliding hole extends along the second direction, the limiting part is inserted into the sliding hole, the limiting part is provided with a first flexible rope, the first flexible rope is wound around the control part, and a first elastic member is provided between the limiting part and the first rotating arm.

[0010] In some embodiments, the limiting portion is provided with two expansion portions relatively along a fourth direction, the fourth direction is perpendicular to the second direction, the expansion portion is movably connected to the limiting portion along the fourth direction, a second elastic member is provided between the two expansion portions, and along the second direction, the limiting portion is movably provided with a clamping portion, the first flexible rope is connected to the clamping portion, the clamping portion is provided with a second flexible rope corresponding to the expansion portion, the second flexible rope is connected to the expansion portion, the clamping portion is provided between the two expansion portions, the limiting portion is provided with a supporting portion, and the supporting portion is configured so that when the first flexible rope pulls the clamping portion, the clamping portion abuts against the supporting portion to pull the limiting portion.

[0011] In some embodiments, the limiting portion is hollow inside, the locking portion is accommodated in the limiting portion, the limiting portion is provided with a through hole, and the expansion portion is passed through the through hole.

[0012] In some embodiments, protrusions are respectively provided on opposite sides of the two expansion portions, and the protrusions include a first side close to the locking portion, and a positioning recess is provided on the first side.

[0013] In some embodiments, the seat body is provided with an adjustment seat corresponding to the first rotating arm and the second rotating arm, the adjustment seat is movably connected to the seat body along the first direction, and the first rotating arm and the second rotating arm are rotationally connected to the adjustment seat in a one-to-one correspondence.

[0014] In some embodiments, the second rotating arm includes a first end rotatably connected to the base body and a movably arranged second end, the second end is movably provided with a limit pin along the second direction, and the base body is provided with a plurality of pin holes spaced apart along the first direction.

[0015] The present invention has the following beneficial effects: 1. The first and second rotating arms form an "X"-shaped structure. A central concave structure of the "X"-shaped structure faces the force-applying component. On the one hand, the first and second rotating arms can limit the maximum bending distance of the profile. On the other hand, the first and second rotating arms can limit the deformation of the profile from the middle to the sides, making the bending deformation of the profile more regular and improving the bending effect.

[0016] 2. The limiting portion is used to limit the first rotating arm and the second rotating arm, so that the distance between the intersection of the first rotating arm and the second rotating arm and the force-applying component can be adjusted, thereby adjusting the bending degree of the profile, thereby increasing the scope of application of the device.

[0017] 3. There are multiple limit parts, and the second rotating arm can select the matching limit part as needed, so that the first rotating arm and the second rotating arm can form a symmetrical structure about the reference plane parallel to the first direction, and can also form an asymmetrical structure about the symmetrical plane, so that the device can process both symmetrically bent profiles and special-shaped bent profiles, which increases the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front structural diagram of the tunnel construction profile bending device of the present invention; Figure 2 This is a schematic diagram of the back structure of the tunnel construction profile bending device of the present invention; Figure 3 is a schematic cross-sectional structural diagram of the first rotating arm of the present invention; Figure 4 It is a partially enlarged schematic diagram of the cross-sectional structure of the first rotating arm of the present invention; Figure 5 for Figure 4 A magnified view of point A; Figure 6 Schematic diagram of the cooperation between the expansion part and the limiting part of the present invention; Figure 7 Schematic diagram of the cooperation between the locking portion and the protruding portion of the present invention; Figure 8 This is a schematic diagram of the arrangement of the third flexible cable of the present invention.

[0019] Figure numbers: 1-seat body, 11-adjusting seat, 12-pin hole, 2-force-applying assembly, 21-hydraulic cylinder, 22-pressure-applying part, 3-support assembly, 31-first rotating arm, 32-second rotating arm, 33-limiting part, 34-control part, 35-first flexible rope, 36-first elastic member, 37-limiting pin, 38-expansion part, 39-protrusion, 310-clamping part, 311-second flexible rope, 312-positioning recess, 313-second elastic member, 314-resting part, 315-wire hoop part, 316-threading channel, 317-third flexible rope, 4-limiting assembly, 41-sliding seat, 42-sliding part, 43-positioning groove, 44-locking part. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 present invention.

[0022] See also Figure 1 and Figure 2 The embodiment of the present application provides a tunnel construction profile bending device, comprising a base 1, a force-applying assembly 2, a support assembly 3, and two limit assemblies 4. The force-applying assembly 2 and the support assembly 3 are arranged relative to each other along a first direction. The support assembly 3 comprises a first rotating arm 31 and a second rotating arm 32. The first rotating arm 31 and the second rotating arm 32 are rotatably connected to the base 1. The first rotating arm 31 and the second rotating arm 32 are arranged crosswise. The first rotating arm 31 and the second rotating arm 32 are arranged relative to each other along a second direction. The first direction is perpendicular to the second direction. Along the length direction of the first rotating arm 31, the first rotating arm 31 is provided with a plurality of limit portions 33 at intervals. The limit portions 33 are movably connected to the first rotating arm 31 along the second direction. The second rotating arm 32 is arranged between two adjacent limit portions 33. The two limit assemblies 4 are arranged at intervals on the base 1 along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The force-applying assembly 2 and the support assembly 3 are arranged between the two limit assemblies 4.

[0023] The tunnel construction profile bending device of the embodiment of the present application is suitable for bending straight strip profiles. For example, it can be used to bend arch frame I-beams in the field of tunnel construction.

[0024] The first direction can be Figure 1 The direction shown by the X axis, the second direction can be Figure 1 The direction shown by the Z axis, the third direction can be Figure 1 The first direction and the third direction may be parallel to the horizontal direction, and the second direction may be parallel to the vertical direction.

[0025] The force-applying component 2 is used to apply pressure to the profile so that the profile can bend under the force.

[0026] The support component 3 is used to support the profile when the pressure component applies pressure to the profile. For example, in the initial state, there is a certain distance between the profile and the support component 3. The pressure component applies force to the profile along a first direction, and the profile bends along the first direction toward the support component 3 until the profile rests against the support component 3. At this time, the deformation of the profile is restricted.

[0027] The limiting assembly 4 is used to fix the profile to the base. For example, two limiting assemblies 4 can be used to fix the two sides of the profile, and the force-applying assembly 2 can apply pressure to the middle of the profile.

[0028] The cross arrangement of the first rotating arm 31 and the second rotating arm 32 means that the first rotating arm 31 and the second rotating arm 32 form an "X"-shaped structure. One of the concave sides of the "X"-shaped structure faces the force-applying assembly 2. On the one hand, the first rotating arm 31 and the second rotating arm 32 can limit the maximum bending distance of the profile. On the other hand, the first rotating arm 31 and the second rotating arm 32 can limit the deformation of the profile from the middle to the sides, making the bending deformation of the profile more regular and improving the bending effect.

[0029] The limiting portion 33 can be used to limit the position of the first rotating arm 31 and the second rotating arm 32. That is, when the limiting portion 33 moves along the second direction away from the second rotating arm 32 until the limiting portion 33 no longer hinders the rotation of the first rotating arm 31 and the second rotating arm 32, the first rotating arm 31 and the second rotating arm 32 can rotate freely, respectively, so that the relative position of the first rotating arm 31 and the second rotating arm 32 can be adjusted. After the adjustment is completed, the limiting portion 33 is moved so that the second rotating arm 32 is located between the two limiting portions 33. At this time, the rotation of the first rotating arm 31 and the second rotating arm 32 away from the force-applying assembly 2 is restricted. At the same time, the two limiting portions 33 simultaneously limit the second rotating arm 32, which can enhance the limiting effect. Furthermore, because the relative position of the first rotating arm 31 and the second rotating arm 32 is adjustable, the distance between the intersection of the first rotating arm 31 and the second rotating arm 32 and the force-applying assembly 2 can be adjusted, thereby adjusting the degree of curvature of the profile, thereby increasing the applicability of the device.

[0030] The limiting portion 33 can also be used to support the profile. For example, since multiple limiting portions 33 are provided and the multiple limiting portions 33 are spaced apart, the multiple limiting portions 33 can be combined to form a support surface. Because the first rotating arm 31 and the second rotating arm 32 are arranged relative to each other in the second direction, some specific profiles may not be able to contact the first rotating arm 31 and thus cannot be supported by the first rotating arm 31. In this case, the multiple limiting portions 33 can support the profile.

[0031] The limiting portion 33 also enables the bending device of the present embodiment to process irregularly curved profiles. Specifically, because multiple limiting portions 33 are provided, the second rotating arm 32 can select a matching limiting portion 33 as needed, thereby enabling the first rotating arm 31 and the second rotating arm 32 to form a symmetrical structure with respect to a reference plane parallel to the first direction, or an asymmetrical structure with respect to this symmetrical plane. This allows the device to process both symmetrically curved profiles and irregularly curved profiles, expanding the device's applicability.

[0032] In order to further increase the scope of application, the first rotating arm 31 and the second rotating arm 32 can be respectively connected to the base body 1 in an adjustable manner. The specific connection structure can be selected from the existing structure and will not be repeated here.

[0033] See also Figure 1 and Figure 2 In some embodiments, the limiting assembly 4 includes a sliding seat 41 and a sliding portion 42. The sliding seat 41 is connected to the base 1, and the sliding portion 42 is movably connected to the sliding seat 41 along the third direction. The sliding portion 42 is provided with a positioning groove 43.

[0034] The positioning groove 43 is used to place the profile, so that the profile can be fixed to the sliding seat 41 through the positioning groove 43. This reduces the risk of the profile moving when the force-applying component 2 applies force to the profile, thereby forming a safety hazard.

[0035] The sliding portion 42 is adjustably connected to the sliding seat 41, so that the distance between the sliding seats 41 of the two limiting components 4 can be adjusted, so that the bending degree of the profile can be adjusted, further increasing the application range of the bending device.

[0036] See also Figure 1 and Figure 2 In some embodiments, the sliding portion 42 is sleeved on the outer wall of the sliding seat 41 , and the sliding portion 42 is threadedly connected to a locking portion 44 , which abuts against the sliding seat 41 .

[0037] The sliding portion 42 is sleeved on the sliding seat 41 , so that the sliding portion 42 can move along the sliding seat 41 , and the position of the sliding portion 42 relative to the sliding seat 41 is adjustable.

[0038] The locking portion 44 is used to lock the sliding portion 42. Specifically, the locking portion 44 is threadedly connected to the sliding portion 42. By rotating the locking portion 44, the position of the locking portion 44 relative to the sliding seat 41 can be adjusted. Rotating the locking portion 44 causes the locking portion 44 to abut against the sliding seat 41, thereby locking the sliding portion 42 to the sliding seat 41. Conversely, rotating the locking portion 44 so that the locking portion 44 no longer contacts the sliding seat 41, thereby unlocking the sliding portion 42.

[0039] In order to further improve the fixing reliability, the sliding seat 41 can also be provided with a locking hole. When the sliding part 42 moves to the locking position, the locking part 44 is rotated. At this time, the locking part 44 is screwed into the locking hole, and the sliding part 42 is locked to the sliding seat 41.

[0040] See also Figure 1 and Figure 2In some embodiments, the force-applying assembly 2 includes a hydraulic cylinder 21 and a pressure-applying portion 22. The hydraulic cylinder 21 is connected to the base 1 and includes a movable end that moves along a first direction. The pressure-applying portion 22 is connected to the movable end.

[0041] The specific structure and working principle of the hydraulic cylinder 21 are well known to those skilled in the art and will not be described in detail here.

[0042] The movable end can move along the first direction under the action of the hydraulic oil of the hydraulic cylinder 21. When the movable end drives the pressure applying portion 22 to abut against the profile, the profile can be pressurized.

[0043] The specific shape of the pressure applying portion 22 can be set as needed.

[0044] See also Figure 1 and Figure 3 In some embodiments, the first rotating arm 31 is rotatably connected to the control part 34, the first rotating arm 31 is provided with a sliding hole, the axial direction of the sliding hole extends along the second direction, the limiting part 33 is inserted into the sliding hole, the limiting part 33 is provided with a first flexible rope 35, the first flexible rope 35 is wound around the control part 34, and a first elastic member 36 is provided between the limiting part 33 and the first rotating arm 31.

[0045] A limiting structure may be provided between the limiting portion 33 and the sliding hole to prevent the limiting portion 33 from escaping from the sliding hole.

[0046] The specific structure of the rotational connection between the control part 34 and the first rotating arm 31 can be selected from existing structures.

[0047] The limiting portion 33 is inserted into the sliding hole so that the limiting portion 33 can move relative to the first rotating arm 31 .

[0048] The specific material of the first flexible cable 35 can be selected from existing materials.

[0049] The first elastic member 36 may be a spring, and the first elastic member 36 is used to provide an elastic force to move the limiting portion 33 toward the direction of approaching the second rotating arm 32 .

[0050] The control unit 34 is rotated to reel in or unreel the first flexible cable 35. When the control unit 34 reels the first flexible cable 35, the stopper 33 is pulled away from the second rotating arm 32, compressing the first elastic member 36. Conversely, when the control unit 34 unreels the first flexible cable 35, the elastic restoring force of the first elastic member 36 pushes the stopper 33 toward the second rotating arm 32.

[0051] By driving the limiting part 33 to move via the first flexible cable 35, space is saved on the one hand. On the other hand, the structure is simple, reliable, and low-cost. On the other hand, it is convenient to drive all the limiting parts 33 to move synchronously at the same time. Furthermore, by reasonably setting the winding starting point of the first flexible cable 35, it is convenient to adjust the stroke of the limiting part 33 driven by the control part 34. Furthermore, since the limiting part 33 is subjected to the force from the second rotating arm 32 during operation, if the limiting part 33 and the control part 34 are rigidly connected, when the limiting part 33 is subjected to force, the connection between the limiting part 33 and the control part 34 may be destroyed. However, the flexible connection formed by the first flexible cable 35 can reduce the risk of the connection between the limiting part 33 and the control part 34 being destroyed.

[0052] See also Figure 4 、 Figure 5 and Figure 6 In some embodiments, the limiting portion 33 is provided with two expansion portions 38 relatively along a fourth direction, the fourth direction is perpendicular to the second direction, the expansion portion 38 is movably connected to the limiting portion 33 along the fourth direction, a second elastic member 313 is provided between the two expansion portions 38, and along the second direction, the limiting portion 33 is movably provided with a clamping portion 310, the first flexible rope 35 is connected to the clamping portion 310, the clamping portion 310 is provided with a second flexible rope 311 corresponding to the expansion portion 38, the second flexible rope 311 is connected to the expansion portion 38, the clamping portion 310 is provided between the two expansion portions 38, and the limiting portion 33 is provided with a supporting portion 314, and the supporting portion 314 is configured so that when the first flexible rope 35 pulls the clamping portion 310, the clamping portion 310 abuts against the supporting portion 314 to pull the limiting portion 33.

[0053] The fourth direction can be Figure 3 The direction shown by the P axis.

[0054] The second elastic member 313 may be a spring, and the second elastic member 313 is used to provide an elastic force to separate the two expansion portions 38 after they are closed.

[0055] When the second rotating arm 32 is between the two limiting parts 33, one of the extension parts 38 of the two limiting parts 33 respectively abuts against the second rotating arm 32. The extension part 38 can eliminate the fitting clearance between the first rotating arm 31 and the second rotating arm 32, thereby reducing the clearance between the first rotating arm 31 and the second rotating arm 32 in the initial state, thereby reducing the risk of the two shaking.

[0056] The specific size and shape of the expansion portion 38 can be set as needed.

[0057] The locking portion 310 is used to connect the first flexible cable 35 to the limiting portion 33, facilitating the connection. Furthermore, during the application of the profile, the locking portion 310 is locked between the two expansion portions 38, preventing them from closing and improving the reliability of the limiting function of the expansion portions 38.

[0058] When the control unit 34 reels the first flexible cable 35, the first flexible cable 35 first pulls the locking portion 310, allowing the locking portion 310 to escape from between the two expansion portions 38. Then, the second flexible cable 311 disposed on the locking portion 310 pulls the two expansion portions 38 together, so that the expansion portions 38 no longer abut against the second rotating arm 32. This reduces the frictional force on the limiting portion 33 when the limiting portion 33 is retracted, making it easier for the limiting portion 33 to move. Simultaneously, the locking portion 310 abuts against the abutting portion 314, allowing the locking portion 310 to drive the limiting portion 33 to move.

[0059] Furthermore, the engaging portion 310 and the second elastic member 313 cooperate to tighten the first flexible cable 35, thereby enabling the control portion 34 to more accurately drive the limiting portion 33 to move. Specifically, under the action of the second elastic member 313, the two expansion portions 38 are driven to separate, thereby driving the engaging portion 310 to move toward the expansion portion 38, thereby tightening the first flexible cable 35.

[0060] The specific lengths of the first flexible rope 35 and the second flexible rope 311 , and the relative positions of the clamping portion 310 and the abutting portion 314 can be set as needed to meet the working requirements of the device.

[0061] See also Figure 4 and Figure 5 In some embodiments, the interior of the limiting portion 33 is hollow, the locking portion 310 is accommodated in the limiting portion 33, the limiting portion 33 is provided with a through hole, and the expansion portion 38 is passed through the through hole.

[0062] The expansion portion 38 may be provided with a limiting structure to reduce the risk of the expansion portion 38 being separated from the through hole. The specific structure may be selected from existing structures and will not be described in detail here.

[0063] The locking portion 310 is arranged in the limiting portion 33, and the expansion portion 38 is passed through the through hole, so that the expansion portion 38 also plays a role in limiting the limiting portion 33, that is, when the two expansion portions 38 are separated, the expansion portion 38 can block the limiting portion 33 from entering the sliding hole. When the two expansion portions 38 are closed, the expansion portion 38 is at least partially received in the limiting portion 33, so that the expansion portion 38 will not hinder the limiting portion 33 from entering the sliding hole.

[0064] like Figure 8As shown, in some embodiments, the clamping portion 310 may be provided with a threading channel 316 along the second direction, and the first flexible cable 35 and the second flexible cable 311 may be integrally formed. For example, the first flexible cable 35 and the second flexible cable 311 may be formed by a third flexible cable 317. Specifically, the third flexible cable 317 is folded in half, with the middle portion wrapped around the control portion 34, and the ends passing through the threading channel 316 of the clamping portion 310 to connect to the two expansion portions 38. The third flexible cable 317 may be provided with two cleats 315 at intervals, one of which is provided on the side of the clamping portion 310 facing the slide hole, and the other on the side of the clamping portion 310 facing away from the slide hole. The two cleats 315 enable the third flexible cable 317 to remain folded in half. For example, the cleats 315 may be sleeve-shaped structures that fit over the two bundles formed by the folded third flexible cable 317.

[0065] When the control unit 34 reels the third flexible cable 317, the wire hoop portion 315 facing away from the slide hole can pull the locking portion 310 out from between the two extension portions 38, then abut against the abutting portion 314, driving the locking portion 310 to move. Conversely, when the third flexible cable 317 is unwound until the limit portion 33 moves to the limit position, the third flexible cable 317 is continued to be unwound, the two extension portions 38 are separated, and the wire hoop portion 315 facing the slide hole can then drive the locking portion 310 to insert between the two extension portions 38.

[0066] The portion of the third flexible rope 317 from the hoop portion 315 facing away from the sliding hole to the end thereof may be made of elastic material, so that when the third flexible rope 317 is wound up, the hoop portion 315 facing away from the sliding hole may first move the clamping portion 310 out from between the two expansion portions 38, and then the two expansion portions 38 are closed.

[0067] It should be noted that the closing of the two expansion portions 38 needs to be completed before the locking portion 310 abuts against the abutting portion 314 .

[0068] The advantages of this arrangement are: first, the folded structure of the third flexible cable 317 increases the connection strength between the clamping portion 310 and the limiting portion 33. Furthermore, after the third flexible cable 317 is folded, the middle portion of the third flexible cable 317 forms a loop-like structure, which facilitates connecting the third flexible cable 317 to the control portion 34. For example, a hook can be provided on the control portion 34 to hang the third flexible cable 317 on the hook. Second, the clamping portion 310 allows the two ends of the third flexible cable 317 to be brought together, and the threading channel 316 provided within the clamping portion 310 reduces the risk of wear and tear caused by friction between the third flexible cable 317 and the right-angled corners of the device.

[0069] See also Figure 7In some embodiments, protrusions 39 are respectively provided on opposite sides of the two expansion portions 38 . The protrusions 39 include a first side close to the locking portion 310 , and a positioning recess 312 is provided on the first side.

[0070] The first side of the protrusion 39 may be a side of the protrusion 39 facing the slide hole.

[0071] The positioning recess 312 is used to accommodate the locking portion 310 . That is, when the two expansion portions 38 are separated, the locking portion 310 enters the positioning recess 312 so that the locking portion 310 is at least partially located between the two expansion portions 38 .

[0072] On the one hand, the positioning recess 312 can be used to limit the position of the locking portion 310 relative to the expansion portion 38 in the second direction, and on the other hand, it can limit the position of the locking portion 310 relative to the expansion portion 38 in the fourth direction, thereby improving the matching accuracy between the locking portion 310 and the expansion portion 38.

[0073] See also Figure 1 and Figure 2 In some embodiments, the base body 1 is provided with an adjustment base 11 corresponding to the first rotating arm 31 and the second rotating arm 32. The adjustment base 11 is movably connected to the base body 1 along the first direction, and the first rotating arm 31 and the second rotating arm 32 are rotatably connected to the adjustment base 11 one by one.

[0074] The specific structure of the movably connected adjustment seat 11 and the seat body 1 can be selected from existing structures and will not be described in detail here.

[0075] The adjustment seat 11 can move along the first direction relative to the seat body 1, so that the relative position between the first rotating arm 31 and the second rotating arm 32 can be adjusted, so that the first rotating arm 31 and the second rotating arm 32 can form a structure symmetrical about a reference plane parallel to the first direction, and can also form an asymmetric structure about the symmetrical plane, further increasing the scope of application of the present device.

[0076] A locking structure may be provided between the adjustment seat 11 and the seat body 1 to facilitate unlocking or locking the adjustment seat 11 as needed.

[0077] See also Figure 1 and Figure 2 In some embodiments, the second rotating arm 32 includes a first end rotatably connected to the base body 1 and a movably arranged second end, the second end is movably provided with a limiting pin 37 along the second direction, and the base body 1 is provided with a plurality of pin holes 12 at intervals along the first direction.

[0078] The second rotating arm 32 can be configured so that when the second rotating arm 32 rotates to face the force applying assembly 2 , the limiting pin 37 is selectively aligned with the plurality of pin holes 12 , and the limiting pin 37 can be inserted into the pin hole 12 .

[0079] This allows the support assembly 3 to operate in two different modes: one in which the first and second arms 31, 32 cooperate to support the profile, thereby forming the profile into a curved structure. The other mode is to remove the first arm 31 and rotate the second arm 32 so that the stop pin 37 is inserted into the pin hole 12. In this mode, the profile is supported only by the second arm 32. This can be used to straighten a curved profile, i.e., to straighten it back into a straight shape, and to form a curved structure, further expanding the applicability of the device.

[0080] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the scope of protection determined by the claims of the present invention.

Claims

1. A tunnel construction profile bending device, characterized in that: include: base(1); force applying component (2); A support assembly (3), wherein the force-applying assembly (2) and the support assembly (3) are arranged relative to each other along a first direction, and the support assembly (3) comprises a first rotating arm (31) and a second rotating arm (32), wherein the first rotating arm (31) and the second rotating arm (32) are rotatably connected to the base body (1), the first rotating arm (31) and the second rotating arm (32) are arranged crosswise, and the first rotating arm (31) and the second rotating arm (32) are arranged relative to each other along a second direction, wherein the first direction is perpendicular to the second direction, and along the length direction of the first rotating arm (31), the first rotating arm (31) is provided with a plurality of limiting portions (33) at intervals, and the limiting portions (33) are movably connected to the first rotating arm (31) along the second direction, and the second rotating arm (32) is arranged between two adjacent limiting portions (33); Two limiting assemblies (4) are arranged on the seat body (1) at intervals along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the force-applying assembly (2) and the supporting assembly (3) are arranged between the two limiting assemblies (4).

2. The tunnel construction profile bending device according to claim 1, characterized in that: The limiting component (4) comprises: A sliding seat (41) connected to the seat body (1); The sliding portion (42) is movably connected to the sliding seat (41) along the third direction, and the sliding portion (42) is provided with a positioning groove (43).

3. The tunnel construction profile bending device according to claim 2, characterized in that: The sliding portion (42) is sleeved on the outer peripheral wall of the sliding seat (41), and the sliding portion (42) is threadedly connected to a locking portion (44), and the locking portion (44) abuts against the sliding seat (41).

4. The tunnel construction profile bending device according to claim 1, characterized in that: The force applying component (2) comprises: A hydraulic cylinder (21) connected to the seat (1), the hydraulic cylinder (21) comprising a movable end that moves along the first direction; The pressure-applying portion (22) is connected to the movable end.

5. The tunnel construction profile bending device according to claim 1, characterized in that: The first rotating arm (31) is rotatably connected to the control portion (34). The first rotating arm (31) is provided with a sliding hole. The axial direction of the sliding hole extends along the second direction. The limiting portion (33) is inserted into the sliding hole. The limiting portion (33) is provided with a first flexible rope (35). The first flexible rope (35) is wound around the control portion (34). A first elastic member (36) is provided between the limiting portion (33) and the first rotating arm (31).

6. The tunnel construction profile bending device according to claim 5, characterized in that: The limiting portion (33) is provided with two expansion portions (38) opposite to each other along a fourth direction, the fourth direction being perpendicular to the second direction, the expansion portion (38) being movably connected to the limiting portion (33) along the fourth direction, a second elastic member (313) being provided between the two expansion portions (38), the limiting portion (33) being movably provided with a clamping portion (310) along the second direction, the first flexible cable (35) being connected to the clamping portion (310), the clamping portion (310) A second flexible rope (311) is provided corresponding to the expansion portion (38), the second flexible rope (311) is connected to the expansion portion (38), the clamping portion (310) is provided between the two expansion portions (38), and the limiting portion (33) is provided with a supporting portion (314), and the supporting portion (314) is configured so that when the first flexible rope (35) pulls the clamping portion (310), the clamping portion (310) abuts against the supporting portion (314) to pull the limiting portion (33).

7. The tunnel construction profile bending device according to claim 6, characterized in that: The limiting portion (33) is hollow inside, the clamping portion (310) is accommodated in the limiting portion (33), the limiting portion (33) is provided with a through hole, and the expansion portion (38) is passed through the through hole.

8. The tunnel construction profile bending device according to claim 6, characterized in that: Protruding portions (39) are respectively provided on opposite sides of the two expansion portions (38), and the protruding portions (39) include a first side close to the clamping portion (310), and the first side is provided with a positioning recess (312).

9. The tunnel construction profile bending device according to claim 1, characterized in that: The seat body (1) is provided with an adjustment seat (11) corresponding to the first rotating arm (31) and the second rotating arm (32); the adjustment seat (11) is movably connected to the seat body (1) along the first direction; the first rotating arm (31) and the second rotating arm (32) are rotatably connected to the adjustment seat (11) in a one-to-one correspondence.

10. The tunnel construction profile bending device according to claim 1, characterized in that: The second rotating arm (32) comprises a first end rotatably connected to the base body (1) and a second end movably arranged, the second end being provided with a limit pin (37) movably arranged along the second direction, and the base body (1) being provided with a plurality of pin holes (12) at intervals along the first direction.

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