Tunnel arch machine

Abstract

The utility model relates to a tunnel vertical arch machine, including trolley and support frame, the top of support frame is connected with lifting platform, this lifting platform is driven to lift by lifting drive assembly, the middle part arch frame clamping assembly is located in the top of lifting platform, and the middle part arch frame clamping assembly includes two or more than that interval setting in the middle part lifting frame of lifting platform platform, and the top of each middle part lifting frame is separately provided with two or more than that interval middle part clamp, and the both ends of arch frame middle section are clamped on the middle part clamp of middle part lifting frame respectively, and each middle part lifting frame is connected on lifting platform platform through moving mechanism respectively, so that middle part lifting frame can move relative to lifting platform platform, realizes the multidimensional adjustment to arch frame middle section on the spatial position, guarantees the accuracy of steel arch frame installation.

Description

Technical Field

[0001] This utility model relates to the field of tunnel arch frame assembly technology, specifically to a tunnel arch erecting machine. Background Technology

[0002] Steel arch frames are generally composed of three segments. Each segment consists of multiple coaxially spaced arch sections. Before being sent into the tunnel, these arch sections must be connected into a single unit using connecting bars. Then, they are clamped and inserted into the tunnel by an arch-erecting machine. Because the connection between these multiple steel arch sections requires high precision, even slight deviations at the ends of adjacent arch frame segments can prevent proper docking and locking. Existing technology CN202123194798.2 – “Multifunctional Tunnel Arch-Erecting Machine” – discloses that the middle segment of the arch frame is clamped on the middle lifting platform of the arch-erecting machine. The middle lifting platform drives the entire middle segment of the arch frame to rise and fall. However, the two ends of the middle segment can only achieve synchronous height adjustment, not multi-dimensional spatial adjustment. This increases the difficulty of docking the middle segment within a limited space, thus reducing the efficiency of tunnel arch erection. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a tunnel arch erecting machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The tunnel arch erecting machine includes a trolley and a support frame. The support frame is fixedly connected to the trolley and is moved and rotated by the trolley. Lateral arch frame clamping assemblies are provided on both sides of the support frame, and a central arch frame clamping assembly is provided on the top of the support frame. A lifting platform is connected to the top of the support frame, and the lifting platform is driven by a lifting drive assembly. The central arch frame clamping assembly is located on the top of the lifting platform and includes two or more central lifting frames spaced apart on the platform surface. Each central lifting frame has two or more central clamps spaced apart on its top. The two ends of the middle segment of the arch frame are clamped onto the central clamps of the central lifting frames. Each central lifting frame is connected to the platform surface via a moving mechanism, allowing the central lifting frame to move relative to the platform surface, thus achieving multi-dimensional adjustment of the spatial position of the middle segment of the arch frame.

[0005] Furthermore, the moving mechanism is a Y-axis moving mechanism, including a Y-axis guide rail arranged along the width direction of the support frame, a Y-axis slide table slidably connected on the Y-axis guide rail, and the Y-axis slide table being driven by a Y-axis driver to move along the Y-axis guide rail.

[0006] Furthermore, the moving mechanism is an XY-axis moving mechanism. The XY-axis moving mechanism includes an X-axis guide rail arranged along the length of the support frame, an X-axis slide table slidably connected to the X-axis guide rail, and the X-axis slide table being driven by an X-axis driver to move along the X-axis guide rail; a Y-axis guide rail arranged along the width of the support frame is provided on the X-axis slide table, a Y-axis slide table slidably connected to the Y-axis guide rail, and the Y-axis slide table being driven by a Y-axis driver to move along the Y-axis guide rail; the central lifting frame is fixed on the Y-axis slide table.

[0007] Furthermore, a top access platform capable of being raised and lowered is provided on the lifting platform between the two central lifting frames; side access platforms capable of being raised and lowered are respectively provided on both sides of the lifting platform on the support frame, and the side access platforms are connected to a horizontal traversing mechanism, which drives the access platforms to move along the length direction of the support frame.

[0008] Furthermore, the position of the central clamp is adjustable along the width direction of the support frame.

[0009] Furthermore, the lifting drive assembly includes four lifting hydraulic cylinders, which are respectively connected to the four top corners of the lifting platform. The bottom of each lifting hydraulic cylinder is hinged to the lower part of the support frame, and the top of each lifting hydraulic cylinder is movably connected to the connecting shaft at the corresponding top corner of the lifting platform through a connecting ring. There is a space for movement between the connecting ring and the corresponding connecting shaft.

[0010] Furthermore, the central lifting frame is a scissor-type lifting frame, and a stabilizing frame is provided on at least one side of the central lifting frame. The stabilizing frame includes an upper cross arm, an upper stabilizing rod, a lower stabilizing rod, and a lower cross arm. One end of the upper cross arm is fixedly connected to the side of the top frame, and one end of the lower cross arm is fixedly connected to the side of the base. The upper end of the upper stabilizing rod is hinged to the other end of the upper cross arm by a pin, the lower end of the upper stabilizing rod is hinged to the upper end of the lower stabilizing rod by a pin, and the lower end of the lower stabilizing rod is hinged to the other end of the lower cross arm by a pin. The stabilizing frame folds synchronously with the scissor-type lifting frame.

[0011] Furthermore, the two sides of the support frame are respectively slidably connected to lateral moving slide frames in the horizontal direction, and the lateral moving slide frames are driven to move by the first moving driver; the lateral moving slide frames are provided with front and rear moving slide frames that can move back and forth, and the front and rear moving slide frames are driven to move by the second moving driver; the lateral arch frame clamping assembly is connected to the front and rear moving slide frames.

[0012] Furthermore, the lateral arch frame clamping assembly includes a telescopic upper arm, a telescopic lower arm, and a clamping mechanism; the rear end of the telescopic upper arm is rotatably connected to a front-rear movable slide frame, and the telescopic upper arm is driven to perform pitch movement by a first pitch driver; the telescopic lower arm is slidably connected to the front end of the telescopic upper arm, and the telescopic lower arm is driven to extend and retract by a telescopic driver; the front end of the telescopic lower arm is rotatably connected to a pitch seat, and the pitch seat is driven to perform pitch movement by a second pitch driver; the front end of the pitch seat is rotatably connected to a rotating platform, and the rotating platform is driven to rotate by a first rotating driver; the clamping mechanism includes a panel connected to the front end of the rotating platform, the panel is rotatably connected to the rotating platform, and the panel is driven to rotate by a second rotating driver; the upper part of the front end face of the panel is provided with at least one lateral clamp for clamping the lateral segment of the arch frame.

[0013] Furthermore, the bottom of the forward and backward sliding frame is connected to a height-adjustable support leg, and the bottom of the support leg is connected to a roller.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. Both the central arch frame clamping assembly and the lateral arch frame clamping assembly in this utility model can drive the arch frame segments to perform multi-axis movements. The central arch frame clamping assembly can at least drive the middle segment of the arch frame to rise and fall, and adjust along the width direction of the support frame (tunnel travel direction), allowing the middle segment of the arch frame to be adjusted in multiple dimensions in space. In addition, the lateral arch frame clamping assembly can drive the lateral segments of the arch frame to adjust lateral extension, pitch, and rotation, providing high spatial flexibility. Therefore, it can effectively adjust the position of the arch frame segments and ensure the accuracy of the steel arch frame installation. 2. The arch erecting machine of this utility model can prefabricate the arch frame segments outside the tunnel. After the arch frame segments are clamped by the arch frame clamping components on the support frame, the arch frame clamping components can shrink the arch frame segments and then move them into the tunnel. Then, each arch frame clamping component extends and adjusts each arch frame segment to the accurate installation position. Finally, they are assembled and welded into a complete steel arch frame. The above process greatly improves the installation efficiency and quality of tunnel steel arch frames, and also ensures high production safety.

[0015] 3. The arch erecting machine is equipped with access platforms at different locations to facilitate manual locking of arch frame segments at different positions. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a perspective view of the lateral arch frame clamping assembly; Figure 3A simplified front view of the lateral arch clamping assembly; Figure 4 This is a top view of the central lifting frame connected to the Y-axis moving mechanism. Figure 5 This is a side view of the central lifting frame. Detailed Implementation

[0017] like Figure 1-5 As shown, this utility model of a tunnel arch erecting machine includes a trolley 1 and a support frame 2. The support frame 2 is rotatably connected to the trolley 1, and the trolley 1 drives the support frame 2 to move and rotate. Before entering the working state, for the convenience of the arch erecting machine's movement, the length direction of the support frame 2 (i.e., the direction between the lateral arch frame clamping components 4 on both sides of the support frame 2) is consistent with the travel direction of the trolley 1. At this time, the trolley 1 pulls the support frame 2 into the predetermined working area of ​​the tunnel. After reaching the predetermined working area, the rotating mechanism on the trolley 1 drives the support frame 2 to rotate approximately 90 degrees, and the arch erecting machine enters the working state. The support frame 2 has lateral arch frame clamping components 4 on both sides. The support frame 2 has a central arch frame clamping assembly 4 at its top. A lifting platform 3 is connected to the top of the support frame 2 and is driven to rise and fall by a lifting drive assembly. The central arch frame clamping assembly is located on the top of the lifting platform 3 and includes two or more central lifting frames 12 spaced apart on the platform surface of the lifting platform 3. Each central lifting frame 12 has two or more central clamps 13 spaced apart on its top. Each central lifting frame 12 is connected to the platform surface of the lifting platform 3 via a moving mechanism 15, allowing the central lifting frame 12 to move relative to the platform surface of the lifting platform 3. The two ends of the middle segment of the arch frame are clamped onto the central clamps 13 of the central lifting frame 12. Each central clamp 13, under the positional adjustment of the corresponding central lifting frame 12 and the moving mechanism 15, achieves multi-dimensional adjustment of the spatial position of the middle segment of the arch frame.

[0018] In the following description, the width direction of support frame 2 is the Y-axis direction (i.e., the direction of tunnel travel of the support frame when the arch erecting machine is in operation), and the length direction of support frame 2 is the X-axis direction. For example... Figure 4 As shown, the moving mechanism 15 is a Y-axis moving mechanism, including a Y-axis guide rail 151 arranged along the width direction of the support frame, and a Y-axis slide 152 slidably connected on the Y-axis guide rail 151. The Y-axis slide 152 is driven by the Y-axis driver 153 to move along the Y-axis guide rail 151. The Y-axis driver 153 can be a hydraulic cylinder or a lead screw transmission system.

[0019] Of course, the moving mechanism 15 can also be an XY-axis moving mechanism. This XY-axis moving mechanism includes an X-axis guide rail arranged along the length of the support frame 2, an X-axis slide table slidably connected to the X-axis guide rail, and the X-axis slide table being driven by an X-axis driver to move along the X-axis guide rail; a Y-axis guide rail arranged along the width of the support frame 2 is provided on the X-axis slide table, a Y-axis slide table slidably connected to the Y-axis guide rail, and the Y-axis slide table being driven by a Y-axis driver to move along the Y-axis guide rail; the central lifting frame 12 is fixed on the Y-axis slide table. The XY-axis moving mechanism adds an X-axis moving mechanism to the above-mentioned Y-axis moving mechanism, forming movement in two directions (along the width and length directions of the support frame). The XY-axis moving mechanism has the same structure and function as the two-dimensional moving module in the prior art. The X-axis driver and Y-axis driver can adopt a hydraulic cylinder or screw drive system.

[0020] In addition, each central lifting frame 12 can also be connected to the platform of the lifting platform 3 via a rotating mechanism, enabling the central lifting frame 12 to rotate relative to the lifting platform 3, further promoting multi-dimensional adjustment of the middle segment of the arch frame in space, and making it easier to complete the installation of the arch frame. A top access platform 16 that can be raised and lowered is provided on the lifting platform 3 between the two central lifting frames; a side access platform 17 that can be raised and lowered is provided on the support frame 2 on both sides of the lifting platform 3. The side access platform 17 is connected to a horizontal traversing mechanism (including a horizontal traversing guide rail and a traversing drive cylinder), and the horizontal traversing mechanism drives the side access platform 17 to move along the length direction of the support frame 2.

[0021] Since each segmental arch frame has multiple coaxially spaced arch segments, and a central clamp 13 clamps one arch segment, the position of the central clamp 13 is designed to be adjustable along the width of the support frame. This allows it to accommodate arch segments with different spacing. Specifically, the central clamp 13 can be mounted on a slide rail. After position adjustment, the position can be locked with screws to achieve position adjustment of the central clamp 13, thereby improving the clamping adaptability range.

[0022] The lifting drive assembly includes four lifting hydraulic cylinders 5, which are respectively connected to the four top corners of the lifting platform 3. The bottom of each lifting hydraulic cylinder 5 is hinged to the lower part of the support frame 2, and the top of each lifting hydraulic cylinder 5 is movably connected to the connecting shaft at the corresponding top corner position of the lifting platform 3 through a connecting ring 51. There is a space for movement between the connecting ring and the corresponding connecting shaft. The advantage of this design is that by adjusting the extension and retraction of the four lifting hydraulic cylinders 5, the tilt direction and angle of the lifting platform 3 can be slightly adjusted, thereby adjusting the spatial position of the middle segment of the arch frame, and thus achieving precise alignment and locking of the two ends of the middle segment of the arch frame with the ends of the two lateral segments of the arch frame.

[0023] The central lifting frame 12 is a scissor-type lifting frame, and at least one side of the central lifting frame 12 is provided with a stabilizing frame 14. The stabilizing frame 14 adopts a linkage assembly, and the stabilizing frame 14 folds synchronously with the scissor-type lifting frame. Figure 5 As shown, the stabilizer 14 specifically includes an upper cross arm 141, an upper stabilizer bar 142, a lower stabilizer bar 143, and a lower cross arm 144. One end of the upper cross arm 141 is fixedly connected to the side of the top frame, and one end of the lower cross arm 144 is fixedly connected to the side of the base. The upper end of the upper stabilizer bar 142 is hinged to the other end of the upper cross arm 141 by a pin, and the lower end of the upper stabilizer bar 142 is hinged to the upper end of the lower stabilizer bar 143 by a pin. The lower end of the lower stabilizer bar 143 is hinged to the other end of the lower cross arm 144 by a pin. The stabilizer folds synchronously with the scissor lift frame.

[0024] A lateral moving slide frame 7 is slidably connected to the side of the support frame 2 in the horizontal direction. The lateral moving slide frame 7 is driven to move by a first moving driver 8. The lateral moving slide frame 7 is provided with a front-to-back moving slide frame 9 that can move back and forth along the tunnel axis. The front-to-back moving slide frame 9 is driven to move by a second moving driver 10. The lateral arch frame clamping assembly 4 is connected to the front-to-back moving slide frame 9. The above structure can drive the lateral arch frame clamping assembly 4 to move back and forth and laterally along the tunnel axis, thereby accurately adjusting the lateral segments of the arch frame to the predetermined position.

[0025] To improve support rigidity, a height-adjustable support leg 11 is connected to the bottom of the front-to-back sliding frame 9. The bottom of the support leg 11 is connected to a roller, which is supported on the tunnel floor or support platform.

[0026] The lateral arch clamping assembly 4 includes a telescopic upper arm 41, a telescopic lower arm 42, and a clamping mechanism 43. The rear end of the telescopic upper arm 41 is rotatably connected to the front and rear movable slide frame 9, and the telescopic upper arm 41 is driven to perform pitch movement by a first pitch driver 44. The telescopic lower arm 42 is slidably connected to the front end of the telescopic upper arm 41, and the telescopic lower arm 42 is driven to extend and retract by a telescopic driver (located inside the telescopic upper arm 41 and the telescopic lower arm 42, not shown in the figure). The front end of the telescopic lower arm 42 is rotatably connected to a pitch seat 45, which is driven by a second pitch driver. The actuator 46 drives the pitch motion. A rotating platform 47 is rotatably connected to the front end of the pitch seat 45. This rotating platform 47 is driven by a first rotating driver 48 to rotate within surface A. The clamping mechanism 43 includes a panel 431 connected to the front end of the rotating platform 47. The panel 431 is rotatably connected to the rotating platform 47 and is driven by a second rotating driver 432 to rotate within surface B (surface B is perpendicular to surface A). At least one lateral clamp for clamping the arch frame segment is provided on the upper part of the front end face of the panel 431. The aforementioned lateral arch frame clamping assembly 4 can drive the arch frame segment to achieve multi-axis movement (including lateral telescopic movement, two-stage pitch motion, and rotation), thus accurately moving the arch frame segment to the predetermined installation position and ensuring installation quality. The lateral arch frame clamping assembly in this utility model has the same structure and function as the lateral arch frame clamping assembly in the existing patent (CN202123194798.2).

[0027] Each of the central clamps and lateral clamps in this utility model includes fixed clamping blocks and movable clamping blocks arranged at intervals. The movable clamping blocks are driven to rotate by the clamping driver to clamp or release the arch frame segments.

[0028] The arch frame installation method of this utility model is as follows: outside the tunnel, three arch frame segments are clamped and fixed to the middle arch frame clamping assembly and two lateral arch frame clamping assemblies respectively. The middle arch frame clamping assembly and the two lateral arch frame clamping assemblies respectively retract the arch frame segments on them in a staggered manner. Then, the trolley drives the three arch frame segments to move into the tunnel. After reaching the designated position in the tunnel, the middle arch frame clamping assembly and the two lateral arch frame clamping assemblies respectively extend the arch frame segments on them to the predetermined installation position. During docking, the two lateral arch frame clamping assemblies and the middle arch frame clamping assembly are adjusted in position so that the two ends of the middle segment of the arch frame are aligned with the ends of the two lateral segments of the arch frame. Then, they are locked together to form a complete steel arch frame.

[0029] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A tunnel arch erecting machine, comprising a trolley and a support frame, the support frame being fixedly connected to the trolley and moved and rotated by the trolley; lateral arch frame clamping assemblies are respectively provided on both sides of the support frame, and a central arch frame clamping assembly is provided on the top of the support frame; a lifting platform is connected to the top of the support frame, the lifting platform being driven to move up and down by a lifting drive assembly; characterized in that: The central arch frame clamping assembly is located on the top of the lifting platform. The central arch frame clamping assembly includes two or more central lifting frames spaced apart on the lifting platform surface. Each central lifting frame has two or more central clamps spaced apart on its top. The two ends of the central segment of the arch frame are clamped onto the central clamps of the central lifting frame. Each central lifting frame is connected to the lifting platform surface through a moving mechanism, so that the central lifting frame can move relative to the lifting platform surface, thereby realizing multi-dimensional adjustment of the central segment of the arch frame in spatial position.

2. The tunnel arch erecting machine according to claim 1, characterized in that: The moving mechanism is a Y-axis moving mechanism, including a Y-axis guide rail arranged along the width direction of the support frame, a Y-axis slide table slidably connected on the Y-axis guide rail, and the Y-axis slide table being driven by a Y-axis driver to move along the Y-axis guide rail.

3. The tunnel arch erecting machine according to claim 1, characterized in that: The moving mechanism is an XY-axis moving mechanism; the XY-axis moving mechanism includes an X-axis guide rail arranged along the length direction of the support frame, an X-axis slide table slidably connected to the X-axis guide rail, and the X-axis slide table being driven by an X-axis driver to move along the X-axis guide rail; the X-axis slide table is provided with a Y-axis guide rail arranged along the width direction of the support frame, a Y-axis slide table slidably connected to the Y-axis guide rail, and the Y-axis slide table being driven by a Y-axis driver to move along the Y-axis guide rail, and the central lifting frame is fixed on the Y-axis slide table.

4. The tunnel arch erecting machine according to claim 1, characterized in that: The lifting platform has a top access platform that can be raised and lowered between the two central lifting frames; the support frame has side access platforms that can be raised and lowered on both sides of the lifting platform. The side access platforms are connected to a horizontal traversing mechanism, which drives the access platforms to move along the length of the support frame.

5. The tunnel arch erecting machine according to claim 1, characterized in that: The lifting drive assembly includes four lifting hydraulic cylinders, which are respectively connected to the four top corners of the lifting platform. The bottom of each lifting hydraulic cylinder is hinged to the lower part of the support frame, and the top of each lifting hydraulic cylinder is movably connected to the connecting shaft at the corresponding top corner of the lifting platform through a connecting ring. There is a space for movement between the connecting ring and the corresponding connecting shaft.

6. The tunnel arch erecting machine according to claim 1, characterized in that: The central lifting frame is a scissor lift frame, and a stabilizing frame is provided on at least one side of the central lifting frame. The stabilizing frame includes an upper cross arm, an upper stabilizing rod, a lower stabilizing rod, and a lower cross arm. One end of the upper cross arm is fixedly connected to the side of the top frame, and one end of the lower cross arm is fixedly connected to the side of the base. The upper end of the upper stabilizing rod is hinged to the other end of the upper cross arm by a pin, the lower end of the upper stabilizing rod is hinged to the upper end of the lower stabilizing rod by a pin, and the lower end of the lower stabilizing rod is hinged to the other end of the lower cross arm by a pin. The stabilizing frame folds synchronously with the scissor lift frame.

7. The tunnel arch erecting machine according to claim 1, characterized in that: The support frame has lateral moving slide frames slidably connected to both sides in the horizontal direction. The lateral moving slide frames are driven to move by a first moving driver. The lateral moving slide frames are provided with front and rear moving slide frames that can move back and forth. The front and rear moving slide frames are driven to move by a second moving driver. The lateral arch frame clamping assembly is connected to the front and rear moving slide frames.

8. The tunnel arch erecting machine according to claim 7, characterized in that: The lateral arch frame clamping assembly includes a telescopic boom, a telescopic forearm, and a clamping mechanism. The rear end of the telescopic boom is rotatably connected to a front-to-back sliding frame, and the telescopic boom is driven to pitch by a first pitch driver. The telescopic forearm is slidably connected to the front end of the telescopic boom, and the telescopic forearm is extended and retracted by a telescopic driver. The front end of the telescopic forearm is rotatably connected to a pitch seat, which is driven to pitch by a second pitch driver. The front end of the pitch seat is rotatably connected to a rotating platform, which is driven to rotate by a first rotating driver. The clamping mechanism includes a panel connected to the front end of the rotating platform, which is rotatably connected to the rotating platform and is driven to rotate by a second rotating driver. The upper part of the front end face of the panel is provided with at least one lateral clamp for clamping the lateral segment of the arch frame.

9. The tunnel arch erecting machine according to claim 7, characterized in that: The bottom of the forward and backward sliding frame is connected to a height-adjustable support leg, and the bottom of the support leg is connected to a roller.

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