Segment crane for shield tunnel construction

Abstract

The utility model relates to the technical field of shield tunnel construction equipment, in particular to a segment crane for shield tunnel construction, which comprises a support device, a translation device, a rotary telescopic device and a clamping device, the translation device is fixedly connected with the support device, and the rotary telescopic device is slidably connected with the translation device. The rotary telescopic device is rotatably connected with the translation device, the rotary telescopic device is connected with the clamping device, an alarm is arranged on the translation device, and a safety grating is arranged on the clamping device; in the moving process, an alarm warns personnel in a tunnel that the shield segment crane is in transportation, uninformed personnel are prevented from being collided and injured, when induction between two safety optical gratings is cut off by walking personnel, the safety optical gratings can transmit signals to a servo motor, the servo motor stops working, and the shield segment crane is driven to move. And the risk that people are collided when the shield segment crane transports the shield segment is reduced, so that the safety when the people use the shield segment crane is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel construction equipment technology, and in particular to a segment hoist for shield tunnel construction. Background Technology

[0002] Shield tunnel segments are the permanent lining structure of shield tunnels. They are the innermost barrier of the tunnel and bear the responsibility of resisting soil pressure, groundwater pressure, and some special loads. The quality of shield tunnel segments is directly related to the overall quality and safety of the tunnel, and affects the tunnel's waterproof performance and durability.

[0003] Some existing shield tunnel segment cranes lack suitable personnel collision protection structures and warning structures to alert on-site personnel that the segment cranes are in operation. This poses a significant safety hazard as the segment cranes may collide with on-site workers during the transportation and transfer of segments. Patent document with application number 202410229091.X discloses a transport system and method for ultra-large diameter tunnel boring machine segments, which discloses a double segment crane and a double segment rotating device. The double segment crane includes a lifting frame, on which a lifting device, a first drive device, a fixing clamp, and a rotating hoist are fixed. Two sets of fixing clamps and two sets of rotating hoists are set on the lifting frame. The two sets of fixing clamps are respectively fixed at both ends of the lifting frame, and the two sets of rotating hoists are also respectively fixed at both ends of the lifting frame, and are driven to rotate by the first drive device. The bottom of the rotating hoist is provided with a clamping part to clamp the segment from the bottom. The double segment rotating device includes a steel support, a central slewing bearing, a second drive device, and a traveling trolley. The top of the traveling trolley is connected to the steel support through the central slewing bearing, which is driven to rotate by the second drive device. Support rollers are set on the top surface of the steel support. Its structure is complex and difficult to operate, and no corresponding warning structure is provided. Utility Model Content

[0004] In order to solve the problems in the prior art, this utility model provides a segment crane for shield tunnel construction.

[0005] To achieve the above objectives, this utility model proposes a segment hoist for shield tunnel construction, comprising: a support device, a translation device, a rotary telescopic device, and a clamping device. The translation device is fixedly connected to the support device, the rotary telescopic device is slidably connected to the translation device, the rotary telescopic device is rotatably connected to the translation device, and the rotary telescopic device is connected to the clamping device. The translation device is equipped with an alarm, and the clamping device is equipped with a safety light curtain. During shield segment transportation, the translation device drives the rotary telescopic device to move, causing the rotary telescopic device and the clamping device to move to a designated position. The hydraulic cylinder of the rotary telescopic device extends and moves downward, causing the clamping device to move downward to the storage position of the shield segment, so that the hooks of the clamping plate are below the shield segment. Then, the cylinder of the clamping device is activated to push the clamping plate to clamp the shield segment. Finally, the hydraulic cylinder of the rotary telescopic device retracts and retracts upward. After clamping the segment, the translation device moves to the shield segment placement location to complete the transportation of the shield segment. During the movement, the alarm will flash and sound, effectively alerting personnel inside the tunnel that the tunnel segment crane is in operation, preventing unsuspecting personnel from being injured by collisions. When the sensor between the two safety light curtains is interrupted by a walking person, the safety light curtain will transmit a signal to the servo motor, causing the servo motor to stop working, reducing the risk of personnel being collided with when the tunnel segment crane is transporting tunnel segments, thereby effectively improving the safety of personnel when using the tunnel segment crane.

[0006] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, the support device includes a support base, a support frame, a top plate, and a fence. The support base and the support frame are respectively vertically fixed to both ends of the top plate. The support base is connected to the top plate by a first reinforcing rib, and the support frame is connected to the top plate by a second reinforcing rib. The fence is provided on both sides of the top plate. The support device serves a supporting and protective function.

[0007] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, the translation device includes a housing, a servo motor, a first screw, and a first fixing block; the housing is fixedly connected to the top plate, the inner side of the housing is fixedly connected to the servo motor, the output end of the servo motor is fixedly connected to the first screw, and the first fixing block is sleeved on the first screw. By setting the translation device, the rotary telescopic device can be driven to translate, thereby playing the role of moving, clamping, and lowering.

[0008] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, sliders are fixedly connected to both sides of the first fixed block, and the first fixed block is slidably connected to the outer shell through the sliders. By setting the sliders, the stability of the first fixed block during translation can be ensured, enhancing the safety of the entire device.

[0009] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, a controller is provided on the outer shell, and the controller is electrically connected to the servo motor. By setting the controller to control the forward and reverse rotation of the servo motor, the first screw is controlled to rotate forward and reverse to move the first fixed block, and the first fixed block drives the rotary telescopic device to translate.

[0010] As an optional implementation, in the segment crane for shield tunnel construction provided by this utility model, the rotating telescopic device includes a second fixed block, a drive motor, a rotating block, a hydraulic cylinder, and a fixed plate. The second fixed block is fixedly connected to the first fixed block, and the drive motor is fixedly connected inside the second fixed block. The output end of the drive motor is fixedly connected to the rotating block, and the hydraulic cylinder is fixedly connected to the bottom of the rotating block. The output end of the hydraulic cylinder is fixedly connected to the fixed plate. By setting the drive motor to drive the rotating block to rotate and the hydraulic cylinder to drive the fixed plate to move up and down, gripping can be achieved in multiple directions, making it flexible and versatile.

[0011] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, the clamping device includes two fixed seats, two cylinders, and two clamping plates arranged opposite each other; one side of each fixed seat is fixedly connected to a fixed plate, and the two clamping plates are provided between the two fixed seats. A cylinder is fixedly connected to each fixed seat, and the output end of the cylinder is fixedly connected to the clamping plate. The cylinder drives the clamping plate to reciprocate. By setting up two fixed seats, two cylinders, and two clamping plates arranged opposite each other, the cylinder drives the clamping plate to clamp the shield tunnel segments, thereby playing the role of transporting the segments.

[0012] As an optional implementation, in the segment hoist for shield tunnel construction provided by this utility model, the clamping device further includes an adjusting plate and a horizontal column; the horizontal column is connected between the two clamping plates, the clamping plates and the horizontal column are slidably connected, the adjusting plate and the fixed seat are fixedly connected by fasteners, the adjusting plate is provided with a safety light grid, the position can be adjusted by setting the adjusting plate, the safety light grid can play a good warning role, and the horizontal column is set to enhance the stability of the clamping plate during the clamping process and prevent its deviation.

[0013] As an optional implementation, in the shield tunnel construction segment crane provided by this utility model, the inner side of the clamping plate is provided with a protective pad. The protective pad is made of flexible material to buffer and protect the shield segments.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The shield tunnel segment crane provided by this utility model is equipped with a support device, a translation device, a rotary telescopic device, and a clamping device. The translation device is fixedly connected to the support device, the rotary telescopic device is slidably connected to the translation device, the rotary telescopic device is rotatably connected to the translation device, and the rotary telescopic device is connected to the clamping device. The translation device is equipped with an alarm, and the clamping device is equipped with a safety light curtain. When transporting shield segments, the translation device drives the rotary telescopic device to move, so that the rotary telescopic device and the clamping device move to the designated position. The hydraulic cylinder of the rotary telescopic device extends and moves downward, so that the clamping device moves downward to the storage position of the shield segment, so that the claws of the clamping plate are below the shield segment. Then, the cylinder of the clamping device is activated to push the clamping plate to clamp the shield segment. Finally, the hydraulic cylinder of the rotary telescopic device retracts and retracts upward. After clamping the segment, the translation device moves to the shield segment placement location to achieve the function of transporting the shield segment. During the movement, the alarm will flash and sound, effectively alerting personnel inside the tunnel that the tunnel segment crane is in operation, preventing unsuspecting personnel from being injured by collisions. When the sensor between the two safety light curtains is interrupted by a walking person, the safety light curtain will transmit a signal to the servo motor, causing the servo motor to stop working, reducing the risk of personnel being collided with when the tunnel segment crane is transporting tunnel segments, thereby effectively improving the safety of personnel when using the tunnel segment crane. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A structural schematic diagram of the segment crane for shield tunnel construction provided by this utility model;

[0017] Figure 2 Another isometric structural schematic diagram of the segment crane for shield tunnel construction provided by this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 for Figure 2 Enlarged structural diagram at point C;

[0021] Figure 6 A top view of the segment crane for shield tunnel construction provided by this utility model;

[0022] Figure 7 A side view of the segment crane for shield tunnel construction provided by this utility model;

[0023] Figure 8 A front view schematic diagram of the segment crane for shield tunnel construction provided by this utility model;

[0024] Figure 9 A schematic diagram of another side view of the segment crane for shield tunnel construction provided by this utility model;

[0025] Figure 10 A bottom view of the segment crane for shield tunnel construction provided by this utility model.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1. Support device; 11. Support base; 12. Support frame; 13. Top plate; 14. Fence; 15. First reinforcing rib; 16. Second reinforcing rib;

[0028] 2. Translation device; 21. Housing; 22. Servo motor; 23. First screw; 24. First fixing block; 25. Slider; 26. Controller;

[0029] 3. Rotary telescopic device; 31. Second fixed block; 32. Drive motor; 33. Rotating block; 34. Hydraulic cylinder; 35. Fixed plate;

[0030] 4. Clamping device; 41. Fixed base; 42. Cylinder; 43. Clamping plate; 44. Adjusting plate; 45. Cross column; 46. Protective pad; 47. Fastener;

[0031] 5. Alarm device;

[0032] 6. Safety light curtain. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indications in this utility model embodiment, such as first, second, up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This utility model provides a segment hoist for shield tunnel construction, such as... Figures 1-10 As shown, it includes: a support device 1, a translation device 2, a rotary telescopic device 3, and a clamping device 4. The translation device 2 is fixedly connected to the support device 1, the rotary telescopic device 3 is slidably connected to the translation device 2, the rotary telescopic device 3 is rotatably connected to the translation device 2, and the rotary telescopic device 3 is connected to the clamping device 4. The translation device 2 is equipped with an alarm 5, and the clamping device 4 is equipped with a safety light curtain 6. When transporting shield tunnel segments, the translation device 2 is controlled to drive the rotary telescopic device 3 to move, so that the rotary telescopic device 3 and the clamping device 4 move to the designated position. The hydraulic cylinder 34 of the rotary telescopic device 3 extends and moves downward, so that the clamping device 4 moves downward to the storage position of the shield tunnel segment, so that the claws of the clamping plate 43 are located below the shield tunnel segment. Then, the cylinder 42 of the clamping device 4 is activated to push the clamping plate 43 to move and clamp the shield tunnel segment. Finally, the hydraulic cylinder 34 of the rotary telescopic device 3 retracts and retracts upward. After clamping the segment, the translation device 2 moves to the shield tunnel segment placement location to perform the function of transporting the shield tunnel segment. During the movement, the alarm will flash and sound, effectively alerting personnel inside the tunnel that the tunnel segment crane is in operation, preventing unsuspecting personnel from being injured by collisions. When the connection between the two safety light curtains 6 is interrupted by walking personnel, the safety light curtains 6 will transmit a signal to the servo motor 22, causing the servo motor 22 to stop working, reducing the risk of personnel being collided with when the tunnel segment crane is transporting tunnel segments, thereby effectively improving the safety of personnel when using the tunnel segment crane.

[0037] Furthermore, such as Figure 1 , Figure 2 and Figure 6 As shown, in the segment hoist for shield tunnel construction provided by this utility model, the support device 1 includes a support base 11, a support frame 12, a top plate 13, and a fence 14. The support base 11 and the support frame 12 are respectively vertically fixed to both ends of the top plate 13. The support base 11 and the top plate 13 are connected by a first reinforcing rib 15, and the support frame 12 and the top plate 13 are connected by a second reinforcing rib 16. Fences 14 are provided on both sides of the top plate 13. The support device 1 is provided to provide support and protection. Preferably, as shown... Figure 1 As shown, there are two symmetrically arranged support bases 11 and support frames 12 to form a stable rectangular support structure, which can effectively prevent people from slipping when walking on the top plate 13. Figure 6 As shown, the top plate 13 is also provided with anti-slip texture. The top plate 13 is horizontally connected to the top of the support base 11 and the support frame 12. The top plate 13 is symmetrically provided with fences 14 on both sides. The fences 14 include inclined support bars, horizontal support bars and vertical support bars. The horizontal support bars and vertical support bars are vertically connected. An inclined support bar is connected between two adjacent vertical support bars to play a protective role and enhance stability.

[0038] like Figure 2 , Figure 7 and Figure 8 As shown, in the tunnel segment crane for shield tunnel construction provided by this utility model, the translation device 2 includes a housing 21, a servo motor 22, a first screw 23, and a first fixing block 24. The housing 21 is fixedly connected to the top plate 13. The housing 21 is a hollow structure with an open bottom. The inner side of the housing 21 is fixedly connected to the servo motor 22. The output end of the servo motor 22 is fixedly connected to the first screw 23. The first fixing block 24 is sleeved on the first screw 23. By setting the translation device 2, the rotating telescopic device 3 can be driven to translate, so as to move and clamp and lower the segment. An alarm is fixedly connected to the bottom of the housing 21. The alarm is located on one side of the controller 26 and is electrically connected to the servo motor 22, effectively warning personnel in the tunnel that the tunnel segment crane is being transported, preventing unsuspecting personnel from being injured by collisions.

[0039] Furthermore, in the segment hoist for shield tunnel construction provided by this utility model, sliders 25 are fixedly connected to both sides of the first fixing block 24, and the first fixing block 24 is slidably connected to the outer shell 21 through the sliders 25. By setting the sliders 25, the stability of the first fixing block 24 during translation can be ensured, and the safety of the entire equipment can be enhanced.

[0040] In addition, in the segment hoist for shield tunnel construction provided by this utility model, a controller 26 is provided on the outer shell 21, and the controller 26 is electrically connected to the servo motor 22. By setting the controller 26 to control the forward and reverse rotation of the servo motor 22, the first screw 23 is controlled to rotate forward and reverse to move the first fixed block 24, and the first fixed block 24 drives the rotary telescopic device 3 to translate.

[0041] like Figure 1 , Figure 3 and Figure 9 As shown, in the segment hoist for shield tunnel construction provided by this utility model, the rotating telescopic device 3 includes a second fixed block 31, a drive motor 32, a rotating block 33, a hydraulic cylinder 34, and a fixed plate 35. The second fixed block 31 is fixedly connected to the first fixed block 24. The drive motor 32 is fixedly connected inside the second fixed block 31. The output end of the drive motor 32 is fixedly connected to the rotating block 33. The bottom of the rotating block 33 is fixedly connected to the hydraulic cylinder 34. The output end of the hydraulic cylinder 34 is fixedly connected to the fixed plate 35. By setting the drive motor 32 to drive the rotating block 33 to rotate, and the hydraulic cylinder 34 to drive the fixed plate 35 to move up and down, gripping can be achieved in multiple directions, making it flexible and versatile.

[0042] In addition, such as Figure 1 , Figure 2 and Figure 10 As shown, in the tunnel segment hoist for shield tunnel construction provided by this utility model, the clamping device 4 includes two fixed seats 41, two cylinders 42, and two clamping plates 43 arranged opposite to each other. The opposite side of the fixed seat 41 is fixedly connected to the fixed plate 35. Two clamping plates 43 are provided between the two fixed seats 41. The cylinders 42 are fixedly connected to the fixed seats 41. The output end of the cylinders 42 is fixedly connected to the clamping plates 43. The cylinders 42 drive the clamping plates 43 to reciprocate. By setting two fixed seats 41, two cylinders 42, and two clamping plates 43 arranged opposite to each other, the cylinders 42 drive the clamping plates 43 to clamp the shield tunnel segments, thereby playing the role of transporting the tunnel segments. The bottom of the cylinders 42 is fixed on the fixed seats 41. The fixed seats 41 have an L-shaped structure. The clamping plates 43 are provided on the inner side of the fixed seats 41. The drive shaft of the cylinders 42 passes through the fixed seats 41 and drives the clamping plates 43 to move to clamp or put down the shield tunnel segments.

[0043] Furthermore, such as Figure 4As shown, in the segment hoist for shield tunnel construction provided by this utility model, the clamping device 4 also includes an adjusting plate 44 and a horizontal column 45; a horizontal column 45 is connected between two clamping plates 43, and two horizontal columns 45 are symmetrically arranged. The clamping plates 43 and the horizontal columns 45 are slidably connected. The adjusting plate 44 is fixedly connected to the fixed seat 41 by fasteners 47. A safety light curtain 6 is provided on the adjusting plate 44. The position can be adjusted by setting the adjusting plate 44, and the safety light curtain 6 can play a good warning role. The horizontal column 45 is set to enhance the stability of the clamping plate 43 during the clamping process and prevent its deviation. Several screw holes are provided on the inner side of the fixed seat 41 and the adjusting plate 44. Bolts are threadedly connected to the adjusting plate 44 through the screw holes. A knob is fixedly connected to the outer side of one end of the bolt. A washer is movably connected to one side of the knob, and a bolt is movably connected to the inner side of the washer. The use of washer can effectively prevent the bolt from loosening.

[0044] like Figure 5 As shown, in the segment hoist for shield tunnel construction provided by this utility model, a protective pad 46 is provided on the inner side of the clamping plate 43. The protective pad 46 serves to buffer and protect the shield segments. The protective pad 46 is made of flexible material. Two protective pads 46 are symmetrically arranged. The inner side of the protective pad 46 is slidably connected to the cross column 45, and the top of the protective pad 46 is slidably connected to the fixing plate 35. This effectively increases the friction of the clamping plate 43 and effectively prevents damage to the contact surface with the clamping plate 43 when clamping the shield segments. Several hooks are provided at the bottom of the clamping plate 43 to effectively prevent the shield segments from falling.

[0045] This utility model provides a method for using a segment hoist in shield tunnel construction, comprising the following steps:

[0046] Step 1: When in use, start the servo motor 22. The servo motor 22 will drive the first screw 23 to rotate clockwise. At the same time, the first screw 23 will drive the first fixed block 24, which is threadedly connected to the servo motor 22, to move forward, so that the rotating telescopic device 3 and the clamping device 4 move to the designated position. Start the hydraulic cylinder 34 to move the clamping plate 43 in the clamping device 4 downward to the storage position of the shield tunnel segment, so that the hook at the bottom of the clamping plate 43 is below the shield tunnel segment. Start the cylinder 42 to push the clamping plate 43 so that the clamping plate 43 clamps the shield tunnel segment. Start the hydraulic cylinder 34 to move the clamping device 4 that clamps the shield tunnel segment upward.

[0047] Step Two: During the transport of tunnel segments, the servo motor 22 is activated, driving the first screw 23 to rotate counterclockwise. Simultaneously, the first screw 23 drives the first fixing block 24, which is threadedly connected to the servo motor 22, to move backward, causing the clamping device 4 holding the tunnel segment to move to the shield tunnel segment placement location. The second fixing block 31 is activated, rotating the hydraulic cylinder 34 and the clamping device 4 90 degrees. Then, the hydraulic cylinder 34 is activated to push the clamping device 4 downward, so that the bottom of the shield tunnel segment contacts the transport surface. Then, the cylinder 42 is activated to retract the clamping plate 43. During the movement, the alarm will flash and sound, effectively alerting personnel in the tunnel that the shield tunnel segment crane is transporting tunnel segments, preventing unsuspecting personnel from being injured by collisions. When the connection between the two safety light curtains 6 is interrupted by walking personnel, the safety light curtains 6 will transmit a signal to the servo motor 22, causing the servo motor 22 to stop working, effectively increasing the safety of personnel using the shield tunnel segment crane and reducing the risk of personnel being collided with during the transport of shield tunnel segments.

[0048] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A segment hoist for shield tunnel construction, characterized in that, It includes a support device (1), a translation device (2), a rotation and telescopic device (3), and a clamping device (4). The translation device (2) is fixedly connected to the support device (1), the rotation and telescopic device (3) is slidably connected to the translation device (2), the rotation and telescopic device (3) is rotatably connected to the translation device (2), the rotation and telescopic device (3) is connected to the clamping device (4), the translation device (2) is equipped with an alarm (5), and the clamping device (4) is equipped with a safety light curtain (6).

2. The segment crane for shield tunnel construction according to claim 1, characterized in that, The support device (1) includes a support base (11), a support frame (12), a top plate (13), and a fence (14). The support base (11) and the support frame (12) are respectively vertically fixed to both ends of the top plate (13). The support base (11) and the top plate (13) are connected by a first reinforcing rib (15). The support frame (12) and the top plate (13) are connected by a second reinforcing rib (16). The fence (14) is provided on both sides of the top plate (13).

3. The segment crane for shield tunnel construction according to claim 2, characterized in that, The translation device (2) includes a housing (21), a servo motor (22), a first screw (23), and a first fixing block (24); the housing (21) is fixedly connected to the top plate (13), the inner side of the housing (21) is fixedly connected to the servo motor (22), the output end of the servo motor (22) is fixedly connected to the first screw (23), and the first fixing block (24) is sleeved on the first screw (23).

4. The segment crane for shield tunnel construction according to claim 3, characterized in that, The first fixing block (24) is fixedly connected to two sides of a slider (25), and the first fixing block (24) is slidably connected to the outer shell (21) through the slider (25).

5. The segment crane for shield tunnel construction according to claim 3, characterized in that, The housing (21) is provided with a controller (26), which is electrically connected to the servo motor (22).

6. The segment crane for shield tunnel construction according to claim 3, characterized in that, The rotating telescopic device (3) includes a second fixed block (31), a drive motor (32), a rotating block (33), a hydraulic cylinder (34), and a fixed plate (35). The second fixed block (31) is fixedly connected to the first fixed block (24). The drive motor (32) is fixedly connected inside the second fixed block (31). The output end of the drive motor (32) is fixedly connected to the rotating block (33). The bottom of the rotating block (33) is fixedly connected to the hydraulic cylinder (34). The output end of the hydraulic cylinder (34) is fixedly connected to the fixed plate (35).

7. The segment crane for shield tunnel construction according to claim 6, characterized in that, The clamping device (4) includes two fixed seats (41) arranged opposite to each other, two cylinders (42) and two clamping plates (43); one side of the fixed seat (41) is fixedly connected to the fixed plate (35), and the two clamping plates (43) are provided between the two fixed seats (41). The cylinder (42) is fixedly connected to the fixed seat (41), and the output end of the cylinder (42) is fixedly connected to the clamping plate (43). The cylinder (42) drives the clamping plate (43) to reciprocate.

8. The segment crane for shield tunnel construction according to claim 7, characterized in that, The clamping device (4) further includes an adjusting plate (44) and a cross column (45); the cross column (45) is connected between the two clamping plates (43), the clamping plates (43) and the cross column (45) are slidably connected, the adjusting plate (44) and the fixed seat (41) are fixedly connected by fasteners (47), and the safety light curtain (6) is provided on the adjusting plate (44).

9. The segment crane for shield tunnel construction according to claim 7, characterized in that, The inner side of the clamp (43) is provided with a protective pad (46).

Images