Special fixture for prefabricated comprehensive pipe gallery pipe piece

Abstract

The utility model relates to a kind of prefabricated comprehensive pipe gallery segment special fixture, multiple clamping assemblies are installed below adjusting assembly, clamping assembly includes: back-shaped frame and screw rod, one end of screw rod is rotatably connected with back-shaped frame, the other end of screw rod is connected with the main shaft of servo motor fixed on back-shaped frame, each nut seat is set on the opposite screw thread on screw rod, each concave block is fixed below each nut seat and is slidably connected with back-shaped frame, the sliding direction of concave block on back-shaped frame is distributed along screw rod axis, one back-shaped column is fixed below each concave block, each back-shaped column is inserted into a rectangular column through its lower end opening, back-shaped column and rectangular column are fixed by bolt, one clamping block is fixed below each rectangular column, the opening of two clamping blocks is oppositely distributed.Autumn effect is: let two clamping blocks approach each other and move away from each other, realize interval adjustment, to stably hold prefabricated comprehensive pipe gallery segment, adapt to the clamping demand of pipe gallery segment of different width.

Description

Technical Field

[0001] This utility model relates to the field of pipe gallery segment clamping technology, specifically to a special clamp for prefabricated integrated pipe gallery segments. Background Technology

[0002] Precast integrated utility tunnel segments are typically clamped using a universal steel wire rope binding method. However, this method has a technical defect of poor clamping stability. Specifically, during the lifting process, insufficient friction on the contact surface and uneven force distribution can easily cause the segments to slip and shift. At the same time, the lack of rigid connection makes it difficult to accurately control the posture of the components, which may lead to collision and wear risks. Utility Model Content

[0003] To improve upon the existing technology that typically uses a universal steel wire rope binding method for clamping precast integrated utility tunnel segments, which suffers from poor clamping stability, this invention provides a special clamping device for precast integrated utility tunnel segments.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A special clamp for prefabricated integrated pipe gallery segments includes: an adjustment assembly and multiple clamping assemblies installed below the adjustment assembly. The clamping assemblies include: a spiral frame and a lead screw. One end of the lead screw is rotatably connected to the spiral frame, and the other end of the lead screw is connected to the spindle of a servo motor fixed on the spiral frame. A nut seat is fitted on each of two helical segments with opposite directions of rotation on the lead screw. A recessed block that is slidably connected to the spiral frame is fixed below each nut seat. The sliding direction of the recessed block on the spiral frame is distributed along the axis of the lead screw. A spiral column is fixed below each recessed block. A rectangular column is inserted into each spiral column through its lower opening. The spiral column and the rectangular column are fixed with bolts. A clamping block is fixed at the lower end of each rectangular column. The openings of the two clamping blocks are distributed opposite to each other.

[0005] The beneficial effects of this utility model are as follows: When the servo motor starts, the lead screw will rotate under the action of the servo motor, causing the two nut seats to move closer and further apart. The circular column, rectangular column and clamping block connected to each nut seat will move accordingly, thereby enabling the two clamping blocks to move closer and further apart, achieving precise adjustment of the spacing, so as to stably clamp the prefabricated integrated pipe gallery segments. At the same time, it can also adapt to the clamping requirements of pipe gallery segments of different widths. Multiple clamping components work together to expand the synchronous clamping capability of multiple sets of segments.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, a polyurethane gasket is provided on the inner surface of the clamping block.

[0008] The further technical effects mentioned above are: it can avoid damage to the prefabricated integrated utility tunnel segments by clamping blocks, while providing high clamping surface friction.

[0009] Furthermore, limiting grooves are respectively opened on the two side plates of the concave block within the stroke range corresponding to each nut seat, and sliders are respectively provided on the inner side of the two side plates of the concave block within the limiting grooves.

[0010] The further technical effects are as follows: the slider on the concave block and the limiting groove on the side plate of the return frame work together to enable the concave block and the return frame to slide together, while also forming a guiding constraint, forcing the clamping block to translate along a predetermined trajectory, eliminating the risk of skewing caused by excessive freedom in traditional clamping devices. The surface contact between the slider and the limiting groove has a higher resistance to off-center load than the line contact, improving the stability of the movement during the clamping process.

[0011] Furthermore, a trapezoidal block is provided above the circular frame. The trapezoidal block slides in conjunction with the groove on the connecting beam in the adjusting assembly. The sliding direction of the trapezoidal block in the groove is perpendicular to the axis of the lead screw. A U-shaped block is provided on each side of the connecting beam on the circular frame. Multiple first through holes are opened along the length of the two side plates of the connecting beam. A second through hole coaxial with the first through hole is opened on the trapezoidal block. A third through hole coaxial with the second through hole is opened on the U-shaped block. An L-shaped post is arranged on the outer side of one of the U-shaped blocks on the circular frame. The rod end of the L-shaped post is located in the coaxial first through hole, second through hole and third through hole to connect the trapezoidal block, the connecting beam and the two U-shaped blocks together. A limiting block is provided at the end of the L-shaped post. A spring pin is provided at the L end of the L-shaped post.

[0012] The further technical effect based on the above is as follows: When the loop frame needs to be moved on the connecting beam in the adjustment assembly, rotate the L-column so that the limiting block is aligned with the first through hole, the second through hole and the third through hole to achieve contact locking. Then the L-column can be removed. At this time, the trapezoidal block is no longer locked. The loop frame can be moved by dragging by relying on the sliding cooperation between the trapezoidal block and the slide groove on the connecting beam. After moving to the target position (that is, when the first through hole, the second through hole and the third through hole are coaxial again), reinsert the L-column and then rotate the L-column so that the limiting block is misaligned with the first through hole, the second through hole and the third through hole to re-establish the limiting position. This allows the loop frame spacing adjustment operation to achieve quick locking without complicated alignment.

[0013] Furthermore, the adjustment assembly includes: a hanger and multiple connecting beams arranged side by side on the hanger, each connecting beam having multiple clamping components installed on it, and the hanger having multiple hanging rings and multiple grooves.

[0014] The further technical effects are as follows: Since the multiple clamping components on each connecting beam can be individually adjusted, the spacing between two adjacent clamping components can be adjusted to clamp different prefabricated integrated pipe gallery segments. Adjusting the spacing between two connecting beams can meet the spatial layout requirements for simultaneous clamping of multiple sets of segments. The hanger is equipped with multiple hanging rings and multiple grooves, which can be compatible with auxiliary tools or hoisting equipment of different specifications. The hanging rings and grooves on the hanger form a quick mounting structure, realizing the rapid docking of the clamps with external equipment.

[0015] Furthermore, each of the two ends of the connecting beam is provided with a slot. The connecting beam is located above two oppositely distributed rectangular plates in the bracket. The two slots of the connecting beam are respectively locked onto the two rectangular plates. A fourth through hole is opened at each of the two ends of the connecting beam. Multiple fifth through holes are opened along the length of each of the two rectangular plates. A spring pin is provided at each of the two ends of the connecting beam. The spring pins at each end of the connecting beam are respectively inserted into the fifth through holes through the fourth through holes.

[0016] The further technical effects are as follows: when it is required to adjust the position of the connecting beam, the spring pin is disengaged from the fifth through hole, and then the position of the connecting beam can be adjusted on the bracket. After it is moved to the target position, the spring pin is reinserted into the fifth through hole through the fourth through hole. The spacing between two adjacent connecting beams can be adjusted, thereby clamping different prefabricated integrated pipe gallery segments. The design of multiple fifth through holes reserves a physical carrier for subsequent functional expansion and meets the needs of diverse construction scenarios.

[0017] Furthermore, the spring pin includes: a sleeve, the open end of which is fixed to the end of the connecting beam, a movable protrusion inside the sleeve, a spring between the closed end of the sleeve and the protrusion, a positioning pin inserted into the fifth through hole through the fourth through hole on the side of the protrusion away from the spring, a second sliding groove opened on the wall of the sleeve along its length, and a sliding pin entering the second sliding groove on the protrusion.

[0018] Based on the above, the further technical effect is as follows: the sliding column is pushed synchronously so that the sliding column drives the convex column to move along the axial direction, thereby allowing the positioning pin of the convex column to disengage from the fifth through hole. At this time, the position of the connecting beam on the bracket can be adjusted to complete the spacing adjustment. After adjusting to the appropriate position, the external force is released, allowing the positioning pin of the convex column to be reinserted into the fifth through hole through the fourth through hole.

[0019] Furthermore, the locating pin surface on the protruding post is provided with at least one anti-rotation block, and the inner wall of the fifth through hole is provided with an anti-rotation groove that matches the anti-rotation block at each corresponding anti-rotation block.

[0020] The further technical effects are as follows: to prevent relative rotation between the positioning pin on the protruding column and the fifth through hole, to ensure the positioning stability of the connecting beam after adjustment, to reduce the risk of loosening due to vibration, and to ensure that the positioning pin of the protruding column can always be inserted into the fifth through hole through the fourth through hole under the action of the spring, and to form a dual position correction mechanism by combining the linear guiding constraint of the sliding column and the second sliding groove.

[0021] Furthermore, a protective sleeve is fitted onto the sleeve, and a magnetic metal sheet is provided at the closed end of the sleeve. A magnetic block that attracts the magnetic metal sheet is provided inside the protective sleeve.

[0022] Furthermore, the spring is a double torsion spring composite structure.

[0023] The further technical effect of the above is: continuous application of reset elastic force to ensure stable engagement between the positioning pin on the protrusion and the fifth through hole. Attached Figure Description

[0024] Figure 1 This is the first structural diagram of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 2 This is the second structural diagram of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 3 This is the second structural diagram of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 4 This is an enlarged view of the first partial structure of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 5 This is an enlarged view of the second partial structure of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 6 This is an enlarged view of the third partial structure of the special clamp for prefabricated integrated pipe gallery segments in this utility model; Figure 7 This is an enlarged view of the fourth part of the special clamp for prefabricated integrated pipe gallery segments in this utility model.

[0025] The attached diagram lists the components represented by each number as follows: 1. Adjustment assembly; 110. Connecting beam; 111. Slide groove; 112. First through hole; 113. Slot; 120. Hanger; 121. Hanging ring; 122. Groove; 123. Rectangular plate; 1231. Fifth through hole; 130. Spring pin; 131. Sleeve; 132. Protruding post; 133. Spring; 134. Slide post; 135. Protective sleeve; 136. Magnetic metal sheet; 137. Magnetic... 1. Block, 2. Clamping assembly, 210. U-shaped frame, 211. Limiting groove, 212. U-shaped block, 220. Lead screw, 230. Servo motor, 240. Nut seat, 250. Concave block, 251. Slider, 260. U-shaped column, 270. Rectangular column, 280. Clamping block, 281. Polyurethane gasket, 290. Trapezoidal block, 2110. L-shaped column, 2111. Limiting block, 2112. Spring pin. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] Example 1 like Figures 1 to 7As shown, a special clamp for prefabricated integrated pipe gallery segments includes: an adjustment assembly 1 and multiple clamping assemblies 2. Multiple clamping assemblies 2 are installed below the adjustment assembly 1. Each clamping assembly 2 includes: a retaining frame 210 and a lead screw 220. One end of the lead screw 220 is rotatably connected to the retaining frame 210. Specifically, one end of the lead screw 220 is rotatably connected to the retaining frame 210 via a bearing, while the other end of the lead screw 220 is connected to the spindle of a servo motor 230 fixed on the retaining frame 210. A nut seat 240 is fitted onto each of two helical segments with opposite directions of rotation on the lead screw 220. Below each nut seat 240, there is a recess 250 that is slidably connected to the spiral bracket 210. The sliding direction of the recess 250 on the spiral bracket 210 is distributed along the axis of the lead screw 220. Below each recess 250, there is a spiral post 260. Each spiral post 260 has a rectangular post 270 inserted through its lower opening. The spiral post 260 and the rectangular post 270 are fixed together with bolts. Specifically, a hole can be made through the spiral post 260, and a corresponding hole can be made in the rectangular post 270. The bolt passes through the hole in the spiral post 260 and the corresponding hole in the rectangular post 270. Each rectangular column 270 has a hole, and a clamping block 280 is fixed at the lower end of each rectangular column 270. The openings of the two clamping blocks 280 are distributed opposite each other. When the servo motor 230 is started, the lead screw 220 will rotate under the action of the servo motor 230, so that the two nut seats 240 move closer and further away from each other. The loop column 260, rectangular column 270 and clamping block 280 connected to each nut seat 240 will move accordingly, so as to make the two clamping blocks 280 move closer and further away from each other, and achieve precise adjustment of the spacing. Alternatively, multiple clamping components 2 can work together to stably clamp the tube segments of different widths in the tube gallery.

[0028] Example 2 like Figure 4 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: The inner surface of the clamping block 280 is provided with a polyurethane gasket 281, which can prevent the clamping block 280 from damaging the prefabricated integrated utility tunnel segments, while providing high clamping surface friction.

[0029] Example 3 like Figure 4 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below: On the two side plates of the retractable frame 210, there are limiting grooves 211 respectively within the stroke range of each nut seat 240. The inner side of the two side plates of the recess 250 is provided with sliders 251 located in the limiting grooves 211, forming a sliding guide pair. The sliders 251 on the recess 250 and the limiting grooves 211 on the side plates of the retractable frame 210 cooperate to enable the recess 250 and the retractable frame 210 to complete the sliding engagement. At the same time, it forms a guiding constraint, forcing the clamping block 280 to translate along a predetermined trajectory, eliminating the risk of skewing caused by excessive freedom in traditional clamping devices. The surface contact between the slider 251 and the limiting groove 211 has a higher resistance to off-center load than the line contact, improving the stability of the movement during the clamping process. It forces the clamping block 280 to maintain a synchronous translation trajectory, eliminating the risk of skewing caused by uneven force, and indirectly improving the clamping stability and positioning accuracy.

[0030] Example 4 like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, this embodiment is a further improvement on embodiment 3, as detailed below: A trapezoidal block 290 is provided above the rotary frame 210. The trapezoidal block 290 slides in conjunction with the groove 111 on the connecting beam 110 in the adjusting assembly 1. The trapezoidal block 290 is in surface contact with the inner wall of the groove 111 on the connecting beam 110, which enhances the overall rigidity of the structure, ensures the uniformity of force when multiple rotary frames 210 are adjusted synchronously, and improves the reliability of the fixture. The sliding direction of the trapezoidal block 290 in the groove 111 is perpendicular to the axis of the lead screw 220. A U-shaped block 212 is provided on each side of the connecting beam 110 on the rotary frame 210. The two side plates of the connecting beam 110 are respectively opened along their length direction. Multiple first through holes 112 are provided. A second through hole coaxial with the first through hole 112 is provided on the trapezoidal block 290. A third through hole coaxial with the second through hole is provided on the U-shaped block 212. An L-post 2110 is arranged on the outer side of one of the U-shaped blocks 212 on the ring frame 210. The rod end of the L-post 2110 is located in the coaxial first through hole 112, second through hole and third through hole to string the trapezoidal block 290, connecting beam 110 and two U-shaped blocks 212 together. A limiting block 2111 is provided at the rod end of the L-post 2110. A spring pin 2112 is provided at the L end of the L-post 2110. When the ring frame 210 needs to be moved on the connecting beam 110 in the adjustment assembly 1, rotate the L-column 2110 so that the limiting block 2111 aligns with the first through hole 112, the second through hole, and the third through hole to achieve contact locking. Then the L-column 2110 can be removed. At this time, the trapezoidal block 290 is no longer locked. The ring frame 210 can be moved by dragging by relying on the sliding cooperation between the trapezoidal block 290 and the sliding groove 111 on the connecting beam 110. After moving to the target position (that is, when the first through hole 112, the second through hole, and the third through hole are coaxial again), reinsert the L-column 2110 and then rotate the L-column 2110 so that the limiting block 2111 is misaligned with the first through hole 112, the second through hole, and the third through hole to re-establish the limiting position. This allows the ring frame 210 spacing adjustment operation to achieve quick locking without complicated alignment.

[0031] Furthermore, the adjustment component 1 includes a bracket 120 and multiple connecting beams 110 arranged side by side on the bracket 120. Multiple clamping components 2 are installed on each connecting beam 110. Since the multiple clamping components 2 on each connecting beam 110 can be adjusted individually, the spacing between two adjacent clamping components 2 can be adjusted to clamp different prefabricated integrated pipe gallery segments. The bracket 120 is provided with multiple hanging rings 121 and multiple grooves 122, which can be compatible with auxiliary tools or hoisting equipment of different specifications. The hanging rings 121 and grooves 122 on the bracket 120 form a quick mounting structure to realize the quick docking of the clamps with external equipment.

[0032] Each end of the connecting beam 110 has a slot 113. The connecting beam 110 is located above two oppositely distributed rectangular plates 123 in the bracket 120. The two slots 113 of the connecting beam 110 are respectively engaged with the two rectangular plates 123. Each end of the connecting beam 110 has a fourth through hole. Each of the two rectangular plates 123 has multiple fifth through holes 1231 along its length. Each end of the connecting beam 110 has a spring pin 130. The spring pins 130 at each end of the connecting beam 110 are inserted into the fifth through holes 1231 through the fourth through holes. Within 231, when the position of the connecting beam 110 needs to be adjusted, the spring pin 130 is disengaged from the fifth through hole 1231, and then the position of the connecting beam 110 can be adjusted on the bracket 120. After it is moved to the target position, the spring pin 130 is reinserted into the fifth through hole 1231 through the fourth through hole. The spacing between two adjacent connecting beams 110 can be adjusted to meet the requirements of synchronous clamping of multiple sets of segments and to adapt to segments of different widths. The design of multiple fifth through holes 1231 provides a physical carrier for subsequent functional expansion and meets the needs of diverse construction scenarios.

[0033] The spring pin 130 includes: a sleeve 131, the open end of which is fixed to the end of the connecting beam 110; a movable protrusion 132 inside the sleeve 131; a spring 133 inside the sleeve 131 between its closed end and the protrusion 132; a positioning pin on the side of the protrusion 132 away from the spring 133 that is inserted into the fifth through hole 1231 through the fourth through hole; a second sliding groove is formed on the wall of the sleeve 131 along its length; a sliding pin 134 on the protrusion 132 that enters the second sliding groove; the sliding pin 134 is pushed synchronously so that the sliding pin 134 drives the protrusion 132 to move axially, thereby disengaging the positioning pin of the protrusion 132 from the fifth through hole 1231; at this time, the position of the connecting beam 110 can be adjusted on the bracket 120 to complete the spacing adjustment; after adjusting to the appropriate position, the external force is released, allowing the positioning pin of the protrusion 132 to be reinserted into the fifth through hole 1231 through the fourth through hole.

[0034] The locating pin surface on the protruding post 132 is provided with at least one anti-rotation block. The inner wall of the fifth through hole 1231 is provided with anti-rotation grooves that match the anti-rotation blocks at the corresponding anti-rotation blocks. This prevents relative rotation between the locating pin on the protruding post 132 and the fifth through hole 1231, ensuring the positioning stability of the connecting beam after adjustment and reducing the risk of loosening due to vibration. Under the action of the spring 133, the locating pin of the protruding post 132 can always be inserted into the fifth through hole 1231 through the fourth through hole. Combined with the linear guiding constraint of the sliding post 134 and the second sliding groove, a dual position correction mechanism is formed.

[0035] A protective sleeve 135 is fitted onto the sleeve 131. A magnetic metal piece 136 is provided at the closed end of the sleeve 131. A magnetic block 137 that attracts the magnetic metal piece 136 is provided inside the protective sleeve 135. When the sliding column 134 is to be moved, the protective sleeve 135 is first detached from the sleeve 131.

[0036] Spring 133 is a double torsion spring composite structure that continuously applies a restoring force to ensure stable engagement between the positioning pin on protrusion 132 and the fifth through hole 1231.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A special clamp for prefabricated integrated utility tunnel segments, characterized in that, include: The adjustment assembly (1) and a plurality of clamping assemblies (2) installed below the adjustment assembly (1) include: a retaining frame (210) and a lead screw (220). One end of the lead screw (220) is rotatably connected to the retaining frame (210), and the other end of the lead screw (220) is connected to the spindle of a servo motor (230) fixed on the retaining frame (210). A nut seat (240) is fitted on each of the two helical segments with opposite directions of rotation on the lead screw (220). A [missing information - likely a type of fixture] is fixed below each nut seat (240). A recess (250) is slidably connected to the spiral frame (210). The sliding direction of the recess (250) on the spiral frame (210) is distributed along the axis of the lead screw (220). A spiral column (260) is fixed below each recess (250). A rectangular column (270) is inserted into each spiral column (260) through its lower opening. The spiral column (260) and the rectangular column (270) are fixed with bolts. A clamping block (280) is fixed at the lower end of each rectangular column (270). The openings of the two clamping blocks (280) are distributed opposite to each other.

2. The special clamp for prefabricated integrated utility tunnel segments according to claim 1, characterized in that, The inner surface of the clamp (280) is provided with a polyurethane gasket (281).

3. A special clamp for prefabricated integrated utility tunnel segments according to claim 1, characterized in that, The two side plates of the spiral frame (210) are respectively provided with limiting grooves (211) within the stroke range of each corresponding nut seat (240), and the inner sides of the two side plates of the concave block (250) are respectively provided with sliders (251) in the limiting grooves (211).

4. A special clamp for prefabricated integrated utility tunnel segments according to claim 1, characterized in that, A trapezoidal block (290) is provided above the rotary frame (210). The trapezoidal block (290) is slidably engaged with the groove (111) on the connecting beam (110) in the adjusting assembly (1). The sliding direction of the trapezoidal block (290) in the groove (111) is perpendicular to the axis of the lead screw (220). A U-shaped block (212) is provided on each side of the connecting beam (110) on the rotary frame (210). Multiple first through holes (112) are respectively opened on the two side plates of the connecting beam (110) along its length direction. The trapezoidal block (290) is coaxial with the first through holes (112). The second through hole, the U-shaped block (212) has a third through hole coaxial with the second through hole, and an L-shaped column (2110) is arranged on the outside of one of the U-shaped blocks (212) on the spiral frame (210); the rod end of the L-shaped column (2110) is located in the coaxial first through hole (112), second through hole and third through hole, so as to string the trapezoidal block (290), the connecting beam (110) and the two U-shaped blocks (212) together; the L-shaped column (2110) has a limiting block (2111) at the rod end, and the L-shaped column (2110) has a spring pin (2112) at the L end.

5. A special clamp for prefabricated integrated utility tunnel segments according to claim 4, characterized in that, The adjustment component (1) includes: a bracket (120) and a plurality of connecting beams (110) arranged side by side on the bracket (120). Each connecting beam (110) is equipped with a plurality of clamping components (2). The bracket (120) is provided with a plurality of hanging rings (121) and a plurality of grooves (122).

6. A special clamp for prefabricated integrated utility tunnel segments according to claim 5, characterized in that, The connecting beam (110) has a slot (113) at each of its two ends. The connecting beam (110) is located above two rectangular plates (123) that are distributed opposite to each other in the bracket (120). The two slots (113) of the connecting beam (110) are respectively locked onto the two rectangular plates (123). The two ends of the connecting beam (110) are respectively provided with a fourth through hole. The two rectangular plates (123) are each provided with multiple fifth through holes (1231) along their length direction. The two ends of the connecting beam (110) are each provided with a spring pin (130). The spring pins (130) at each end of the connecting beam (110) are respectively inserted into the fifth through holes (1231) through the fourth through hole.

7. A special clamp for prefabricated integrated utility tunnel segments according to claim 6, characterized in that, The spring pin (130) includes: a sleeve (131), the open end of the sleeve (131) is fixed to the end of the connecting beam (110), a movable protrusion (132) is provided inside the sleeve (131), a spring (133) is provided between the closed end of the sleeve (131) and the protrusion (132), a positioning pin is provided on the side of the protrusion (132) away from the spring (133) and inserted into the fifth through hole (1231) through the fourth through hole, a second sliding groove is opened on the wall surface of the sleeve (131) along its length direction, and a sliding post (134) is provided on the protrusion (132) that enters the second sliding groove.

8. A special clamp for prefabricated integrated utility tunnel segments according to claim 7, characterized in that, The locating pin surface of the protruding post (132) is provided with at least one anti-rotation block, and the inner wall of the fifth through hole (1231) is provided with an anti-rotation groove that matches the anti-rotation block at each corresponding anti-rotation block.

9. A special clamp for prefabricated integrated utility tunnel segments according to claim 8, characterized in that, A protective sleeve (135) is fitted onto the sleeve (131). A magnetic metal sheet (136) is provided at the closed end of the sleeve (131). A magnetic block (137) that attracts the magnetic metal sheet (136) is provided inside the protective sleeve (135).

10. A special clamp for prefabricated integrated utility tunnel segments according to claim 7, characterized in that, The spring (133) is a double torsion spring composite structure.

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