A super-section rectangular jacking pipe joint reinforcement cage lifting appliance and a using method thereof

Abstract

The application discloses a super-large-section rectangular top pipe joint reinforcement cage lifting appliance and a use method thereof, relates to the technical field of reinforcement cage lifting appliances, and solves the technical problem of cage body deformation and deflection caused by concentrated stress of lifting points, and comprises a horizontal main beam, a vertical main beam, a horizontal middle beam, an inclined strut beam, a horizontal small beam and a vertical small beam. A plurality of steel rope assemblies are arranged below the lifting appliance, opposite ends of upper end steel ropes and lower end steel ropes are connected with upper support blocks and lower support blocks, an insertion groove is formed in the bottom of the upper support block, a plurality of limiting grooves are formed in the inner wall of the insertion groove, an insertion block is connected to the top of the lower support block, a plurality of guide grooves are formed in the insertion block, and wedge-shaped blocks are slidably connected in the guide grooves. The application converts the traditional concentrated lifting point tension into uniform support force on the whole reinforcement cage, increases the stress area, effectively inhibits the structural deformation in the lifting process, and realizes the separation of the upper end steel ropes and the lower end steel ropes, so that the reinforcement cage can be conveniently removed from the bottom.

Description

Technical Field

[0001] This invention relates to the field of rebar cage lifting equipment, specifically a rebar cage lifting equipment for ultra-large cross-section rectangular jacking pipe sections and its usage method. Background Technology

[0002] Pipe jacking is a trenchless pipeline laying technology that uses jacking equipment to push pipe sections from the working shaft through the soil layer to the receiving shaft. The commonly used rectangular pipe jacking pipe section is usually made by first binding multiple sections of steel bars of different specifications into a steel cage, then lifting the bound steel cage and placing it in the pipe jacking mold, and finally pouring concrete.

[0003] The existing hoisting method usually involves suspending the tops of several steel wire ropes from the bottom of the lifting device, while the bottoms are directly attached to the horizontal or vertical reinforcing bars tied to the top of the steel cage, thereby achieving hoisting.

[0004] When a steel wire rope is attached to a specific tied steel bar at the top of the steel cage for hoisting, the attachment point will bear a concentrated load, which can easily cause the steel bar at that point to loosen or even completely detach from the steel cage frame, thereby damaging the overall structural stability of the steel cage and affecting the subsequent concrete pouring quality of the rectangular jacking pipe.

[0005] Furthermore, since the hanging points of steel wire ropes are relatively fixed when hoisting, and the hoisted steel cage is rectangular, the force distribution of the steel cage during hoisting will be uneven. This will cause the steel cage to tilt or sway after being hoisted, which may not only cause deformation of the steel cage itself, but also have an adverse effect on the subsequent operation of placing it into the rectangular jacking pipe mold.

[0006] Based on this, the present invention provides a lifting tool for the reinforcing cage of ultra-large cross-section rectangular jacking pipe sections and its usage method to solve the above problems. Summary of the Invention

[0007] In view of the above situation and to overcome the defects of the prior art, the present invention provides a lifting tool for a steel cage of a large cross-section rectangular jacking pipe section and its usage method. The present invention has a novel structure and ingenious design, and effectively solves the technical problem that the cage is prone to deformation and tilting due to concentrated force at the lifting points.

[0008] A lifting device for a steel cage of a large cross-section rectangular jacking pipe section includes a transverse main beam, a longitudinal main beam, a transverse intermediate beam, a diagonal bracing beam, a transverse small beam, and a longitudinal small beam. The transverse main beam, longitudinal main beam, transverse intermediate beam, diagonal bracing beam, transverse small beam, and longitudinal small beam cooperate to form the lifting device. Multiple steel rope assemblies are arranged below the lifting device.

[0009] The steel rope assembly includes an upper steel rope and a lower steel rope. An upper support block and a lower support block are fixedly connected to the opposite ends of the upper and lower steel ropes, respectively. An insertion groove is provided at the bottom of the upper support block, and multiple limiting grooves are provided on the inner wall of the insertion groove. An insertion block is fixedly connected to the top of the lower support block, and multiple guide grooves are provided on the insertion block. Wedge blocks are slidably connected in each of the multiple guide grooves.

[0010] Preferably, each of the plurality of wedge blocks has an installation groove on one side, a limit spring is fixedly connected to one side of each of the plurality of installation grooves, the other end of each of the plurality of limit springs is respectively connected to one side of each of the plurality of guide grooves, a sliding groove is provided on one side of each of the plurality of wedge blocks, a guide rod is fixedly connected to one side of each of the plurality of guide grooves, and each of the plurality of wedge blocks is slidably connected to the guide rod through the sliding groove.

[0011] Preferably, the bottom of the lower support block is fixedly connected to a plurality of cylinders, the top of the inner wall of each of the plurality of cylinders is fixedly connected to a push spring, and the other end of the plurality of push springs is fixedly connected to a protective cover, which is sleeved on the lower support block.

[0012] Preferably, each of the multiple steel rope assemblies is provided with a sleeve assembly, the sleeve assembly including an upper sleeve and a lower sleeve, the bottom of the upper sleeve is provided with an upper fixing groove, the top of the lower sleeve is provided with a lower fixing groove, the bottom of the upper sleeve is fixedly connected with an insertion ring, the surface of the insertion ring is fixedly connected with three blocks, the top of the lower fixing groove is provided with an annular groove, the annular groove is provided with three U-shaped grooves, and the three blocks respectively cooperate with the three U-shaped grooves.

[0013] Preferably, the top of the lifting device is fixedly connected with multiple lifting lugs, two auxiliary lifting assemblies that can move relative to each other are provided below the transverse main beam, and two main lifting assemblies are provided below the longitudinal small beam.

[0014] Preferably, the main lifting assembly includes an upper main lifting ring, which is fixedly connected to the bottom of the longitudinal beam. A lower main lifting ring is attached to the bottom of the upper main lifting ring, and a main support frame is fixedly connected to the bottom of the lower main lifting ring. Both sides of the main support frame are provided with main hanging ports, which respectively cooperate with the upper steel rope and the lower steel rope.

[0015] Preferably, the auxiliary lifting assembly includes an upper auxiliary lifting ring located below the transverse main beam. An lower auxiliary lifting ring is attached to the bottom of the upper auxiliary lifting ring, and an auxiliary support frame is fixedly connected to the bottom of the lower auxiliary lifting ring. Auxiliary hanging holes are provided on both sides of the auxiliary support frame, and the two auxiliary hanging holes respectively cooperate with the upper steel rope and the lower steel rope. A push rod is fixedly connected to one side of the upper auxiliary lifting ring, and a push block is fixedly connected to the other end of the push rod.

[0016] Preferably, the bottom of the transverse main beam is fixedly connected to two sliding frames and a support base. Two auxiliary lifting rings are slidably connected to the two sliding frames respectively. The support base has two adjustment slots. The two push blocks are slidably connected to the two adjustment slots respectively. Each of the two adjustment slots has a through slot on the side away from each other. Pull ropes are threaded through the two through slots. One end of each pull rope is fixedly connected to one side of the two push blocks respectively. The other end of each pull rope is fixedly connected to a hanging ring.

[0017] Preferably, an adjusting spring is fixedly connected to one side of the inner wall of each of the two adjusting grooves, and the other end of each of the two adjusting springs is fixedly connected to one side of each of the two push blocks. The two adjusting springs are respectively sleeved on two pull ropes, and a limiting frame is sleeved on each of the two pull ropes. The limiting frame is located below the support base, and a limiting plate is fixedly connected to the bottom of the limiting frame. Multiple hanging grooves are opened on one side of the limiting plate, and the hanging ring cooperates with the hanging groove. A pull rod is fixedly connected to the bottom of the limiting plate.

[0018] A method for using a lifting tool for a steel cage of an ultra-large cross-section rectangular pipe jacking section includes the following steps:

[0019] Step 1: Pull the two ropes by the hanging ring to move the two auxiliary lifting components relative to each other and adjust the position of the auxiliary lifting components. After adjustment, hook the hanging ring into the hanging groove on the limit plate to limit the adjusted ropes. Connect the upper and lower steel ropes of the steel rope assembly located below the main lifting component to the two main hanging ports respectively. Connect the upper and lower steel ropes of the auxiliary lifting component to the two auxiliary hanging ports respectively. Lift the rebar cage and support the bottom of the rebar cage through the sleeve assembly.

[0020] Step 2: After placing the rebar cage into the jacking pipe mold, the worker can push the lower steel rope, causing the insertion block on the lower steel rope to continue to penetrate deeper into the insertion groove at the bottom of the upper steel rope. This causes the wedge block located in the limiting groove to rise and conform to the limiting groove. Through the squeezing of the inclined surface on one side of the limiting groove, the wedge block enters the guide groove on the insertion block. When the wedge block completely leaves the limiting groove and enters the guide groove, the lower support block is rotated to make the insertion block rotate in the insertion groove, so that the wedge block is no longer aligned with the limiting groove. At this time, the lower support block can be pulled to remove the insertion block from the insertion groove, thus separating the upper support block and the lower support block, thereby completing the separation of the upper steel rope and the lower steel rope.

[0021] Step 3: When it is necessary to connect the upper and lower steel ropes again, insert the insertion block on the lower steel rope into the insertion groove again. When the insertion block enters the insertion groove, the wedge block on the insertion block is squeezed, causing the wedge block to enter the guide groove. When the wedge block enters the guide groove, the wedge block slides and is limited on the guide rod through the slide groove. When the wedge block enters the guide groove, the limiting spring between the wedge block and the guide groove is squeezed, causing the limiting spring to elastically deform. As the insertion block continues to enter the insertion groove, when the wedge block is aligned with the limiting groove, it will pop out in the guide groove, causing the wedge block to enter the limiting groove and block the insertion block, thus completing the connection operation of the upper and lower support blocks.

[0022] The present invention has the following technical effects.

[0023] 1. This invention achieves hoisting by using a main support frame, an auxiliary support frame, and upper and lower sleeves, which are fitted together on the reinforcing cage. This transforms the traditional concentrated lifting point tension into a uniform supporting force on the entire reinforcing cage, significantly increasing the stress area and effectively suppressing structural deformation during hoisting. Through the upper support block, lower support block, insertion block, and wedge block, the upper and lower steel ropes can be quickly separated after the reinforcing cage is placed in the mold, facilitating smooth removal from the bottom of the reinforcing cage.

[0024] 2. This invention, through the support base, pull rope, and adjusting spring, can flexibly adjust the spacing between the two auxiliary lifting components below the transverse main beam, thereby adapting to steel cages of different sizes and optimizing their lifting force distribution. Through the hanging ring, limiting plate, hanging groove, and tie rod, the auxiliary lifting components can be effectively locked after adjustment, reducing their displacement during lifting and ensuring lifting stability.

[0025] 3. This invention constructs a special lifting frame that matches the shape of the rectangular jacking pipe reinforcement cage by using transverse main beams, longitudinal main beams, transverse secondary beams, and longitudinal secondary beams. This enhances the overall integrity of the lifting frame, enables multi-point and balanced force support for the rectangular reinforcement cage, and significantly improves the stability of the lifting operation. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the assembly structure of the transverse main beam, longitudinal main beam, transverse secondary beam, and longitudinal secondary beam in this invention;

[0029] Figure 3 This is a schematic diagram of the steel rope assembly structure in this invention;

[0030] Figure 4 This is a schematic diagram of the assembly structure of the upper support block, lower support block, insertion slot, and insertion block in this invention;

[0031] Figure 5 This is a schematic diagram of the assembly structure of the upper sleeve, lower sleeve, and U-groove in this invention;

[0032] Figure 6 This is a schematic diagram of the assembly structure of the upper sleeve, lower sleeve, and stop block in this invention;

[0033] Figure 7 This is a schematic diagram of the assembly structure of the main upper lifting ring, the main lower lifting ring, and the main support frame in this invention;

[0034] Figure 8 This is a schematic diagram of the assembly structure of the upper auxiliary lifting ring, lower auxiliary lifting ring, push rod, and push block in this invention;

[0035] Figure 9 This is a schematic diagram of the assembly structure of the transverse main beam, longitudinal main beam, transverse intermediate beam and diagonal bracing beam in this invention;

[0036] Figure 10 This is a schematic diagram of the assembly structure of the transverse main beam, sliding frame and support seat in this invention;

[0037] Figure 11 This is a schematic diagram of the assembly structure of the support base, pull rope, adjusting spring and limit frame in this invention.

[0038] Reference numerals: 1. Transverse main beam; 2. Longitudinal main beam; 3. Transverse intermediate beam; 4. Diagonal brace beam; 5. Transverse secondary beam; 6. Longitudinal secondary beam; 7. Lifting lug; 8. Main lifting assembly; 801. Main upper lifting ring; 802. Main lower lifting ring; 803. Main support frame; 804. Main hanging port; 9. Sliding frame; 10. Auxiliary lifting assembly; 1001. Auxiliary upper lifting ring; 1002. Auxiliary lower lifting ring; 1003. Auxiliary support frame; 1004. Auxiliary hanging port; 1005. Push rod; 1006. Push block; 11. Steel rope assembly; 1101. Upper steel rope; 1102. Lower steel rope; 1103. Upper support block; 1104. Lower support block; 1105. Insertion slot; 1106. Limiting slot; 1107. 1108. Insertion block; 1109. Guide groove; 1100. Wedge block; 1110. Mounting groove; 1111. Limiting spring; 1112. Slide groove; 1113. Guide rod; 1114. Cylinder body; 1115. Push spring; 1116. Protective cover; 12. Support base; 13. Adjusting groove; 14. Through groove; 15. Pull rope; 16. Adjusting spring; 17. Limiting frame; 18. Hanging ring; 19. Limiting plate; 20. Hanging groove; 21. Pull rod; 22. Sleeve assembly; 2201. Upper sleeve; 2202. Lower sleeve; 2203. Upper fixing groove; 2204. Lower fixing groove; 2205. Insertion ring; 2206. Stop block; 2207. Annular groove; 2208. U-shaped groove. Detailed Implementation

[0039] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 11 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0040] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0041] This invention relates to a lifting tool for a steel reinforcement cage of an ultra-large cross-section rectangular jacking pipe section and its usage method. Existing lifting tools have the problem that when lifting the steel reinforcement cage, concentrated stress at the lifting point can easily lead to local loosening of the steel reinforcement, which can damage the overall stability of the cage and affect the quality of the pouring.

[0042] When steel cables are used to lift steel cages, it is difficult to match the fixed lifting points with the rectangular structure, resulting in uneven force on the cage during lifting, causing tilting and swaying, which affects the positioning.

[0043] As an example, such as Figures 1-3 and Figure 4As shown, this invention is a lifting device for a steel cage of a large-section rectangular jacking pipe section, including a transverse main beam 1, a longitudinal main beam 2, a transverse intermediate beam 3, a diagonal bracing beam 4, a transverse small beam 5, and a longitudinal small beam 6. There are two transverse main beams 1 and two longitudinal main beams 2, which cooperate to form a rectangular frame. The transverse intermediate beam 3 and the diagonal bracing beam 4 are fixed in the middle of the frame formed by the transverse main beam 1 and the longitudinal main beam 2 to reinforce the frame. There are four transverse small beams 5 and two longitudinal small beams 6. The two transverse small beams 5 and one longitudinal small beam 6 cooperate to form a rectangular structure. The two rectangular structures are respectively installed on one side of the two longitudinal main beams 2. The transverse main beam 1, the longitudinal main beam 2, the transverse intermediate beam 3, the diagonal bracing beam 4, the transverse small beams 5, and the longitudinal small beams 6 cooperate to form a lifting device. Multiple steel rope assemblies 11 are arranged below the lifting device.

[0044] The steel rope assembly 11 includes an upper steel rope 1101 and a lower steel rope 1102. Hooks are provided at the top of the upper steel rope 1101 and the bottom of the lower steel rope 1102. An upper support block 1103 and a lower support block 1104 are fixedly connected to the opposite ends of the upper steel rope 1101 and the lower steel rope 1102, respectively. Both the upper support block 1103 and the lower support block 1104 are cylindrical. An insertion groove 1105 is provided at the bottom of the upper support block 1103. Multiple limiting grooves 1106 are provided on the inner wall of the insertion groove 1105. An insertion block 1107 is fixedly connected to the top of the lower support block 1104. Multiple guide grooves 1108 are provided on the insertion block 1107. Wedge blocks 1109 are slidably connected in each of the multiple guide grooves 1108. The multiple wedge blocks 1109 cooperate with the multiple limiting grooves 1106 respectively.

[0045] In this embodiment, during operation, one end of the upper steel rope 1101 and the lower steel rope 1102 are first attached to the bottom of the lifting device. Then, the other ends of the upper steel rope 1101 and the lower steel rope 1102 are passed over the bottom of the reinforcing cage for connection. Subsequently, the insertion block 1107 on the lower support block 1104 is aligned and inserted into the insertion groove 1105 of the upper support block 1103. As the insertion block 1107 gradually enters, the inner wall of the insertion groove 1105 compresses the wedge block 1109 extending from the guide groove 1108, forcing the wedge block 1109 to retract into the guide groove 1108. As the process continues, the inclined surface of the wedge block 1109 will always maintain sliding contact with the inner wall of the insertion groove 1105 until the wedge block 1109 is aligned with the limiting groove 1106. At this point, the wedge block 1109 will quickly pop out in the guide groove 1108 and lock into the limiting groove 1106. Multiple wedge blocks 1109 will complete this action simultaneously, thereby firmly connecting the upper support block 1103 and the lower support block 1104 into a whole. The upper steel rope 1101 and the lower steel rope 1102 will form a closed loop on the steel cage, changing the force mode of the traditional hoisting method, which mainly relies on pulling the upper steel bars of the steel cage, to the support mode of the bottom of the steel cage. This significantly reduces the risk of steel cage deformation during hoisting. After the connection is completed, the steel cage can be hoisted and transported by the lifting equipment.

[0046] After placing the rebar cage into the mold, the steel cable connection needs to be disconnected. Workers push the lower steel cable 1102 upwards from below the rebar cage, causing the lower support block 1104, carrying the insertion block 1107, to continue moving deeper into the insertion groove 1105. During this process, the inclined surface of the wedge block 1109 will conform to the limiting groove 1106 and move upwards, being squeezed by the side of the limiting groove 1106, forcing the wedge block 1109 to gradually retract into the guide groove 1108. When the wedge block 1109 moves above the limiting groove 1106, it no longer rotates the insertion block 1107. When the pull-out is restricted, rotate the lower support block 1104 to rotate the insertion block 1107 and its wedge block 1109 together, so that the wedge block 1109 avoids the position of the limiting groove 1106 and aligns with the smooth groove wall. Finally, pull the lower support block 1104 down to smoothly pull the insertion block 1107 out of the insertion groove 1105, realize the separation of the upper support block 1103 and the lower support block 1104, complete the disconnection of the upper steel rope 1101 and the lower steel rope 1102, and move the lifting device upward so that the steel rope can be taken out from the bottom of the steel cage.

[0047] As an example, such as Figure 4As shown, each of the multiple wedge blocks 1109 has a mounting groove 1110 on one side, and a limit spring 1111 is fixedly connected to one side of each of the multiple mounting grooves 1110. The other end of each of the multiple limit springs 1111 is connected to one side of each of the multiple guide grooves 1108. Each of the multiple wedge blocks 1109 has a sliding groove 1112 on one side, and a guide rod 1113 is fixedly connected to one side of each of the multiple guide grooves 1108. Each of the multiple wedge blocks 1109 is slidably connected to the guide rod 1113 through the sliding groove 1112.

[0048] As an example, such as Figure 4 As shown, multiple cylinders 1114 are fixedly connected to the bottom of the lower support block 1104. The multiple cylinders 1114 are evenly distributed in a circle at the bottom of the lower support block 1104. Push springs 1115 are fixedly connected to the top of the inner wall of each of the multiple cylinders 1114. A protective cover 1116 is fixedly connected to the other end of the multiple push springs 1115. The maximum diameter of the protective cover 1116 is the same as the maximum diameter of the upper support block 1103. The protective cover 1116 is sleeved on the lower support block 1104, and the top of the protective cover 1116 matches the bottom of the upper support block 1103.

[0049] In this embodiment, during the process of the insertion block 1107 entering the insertion groove 1105, the wedge block 1109 is squeezed by the side wall of the insertion groove 1105, causing the wedge block 1109 to slide along the guide rod 1113 through the sliding groove 1112 on it, thereby retracting into the guide groove 1108. Simultaneously, this squeezes the limiting spring 1111 provided between the wedge block 1109 and the guide groove 1108, causing it to undergo elastic deformation and accumulate a reverse force. When the wedge block 1109 moves to a position corresponding to the limiting groove 1106 as the insertion block 1107 penetrates deeper, it is no longer squeezed by the side wall of the insertion groove 1105. The elastic force stored in the limiting spring 1111 is released, pushing the wedge block 1109 to move in the opposite direction and extend out of the guide groove 1108. The wedge block 1109 enters the limiting groove 1106, cooperating to limit and fix the inserted insertion block 1107. After untying... At this time, the insertion block 1107 is pushed deeper, and the side wall of the limiting groove 1106 will squeeze the extended wedge block 1109, thereby compressing the limiting spring 1111 again. This facilitates the quick connection and separation of the upper steel rope 1101 and the lower steel rope 1102. While effectively supporting the steel cage and suppressing its deformation, it also makes it convenient to remove the sling system from the bottom after the steel cage is in place. In addition, when the lower support block 1104 is pushed closer to the upper support block 1103, the protective cover 1116 will first be blocked by the upper support block 1103, causing it to slide relative to the lower support block 1104. This sliding will stretch the push spring 1115 placed in the cylinder 1114, causing it to undergo elastic deformation. This ensures that the protective cover 1116 can continuously shield and protect the connection part during the connection process of the upper support block 1103 and the lower support block 1104.

[0050] As an example, such as Figures 2-6 As shown, each of the multiple steel rope assemblies 11 is equipped with a sleeve assembly 22. The sleeve assembly 22 includes an upper sleeve 2201 and a lower sleeve 2202. The bottom of the upper sleeve 2201 is provided with an upper fixing groove 2203, and the top of the lower sleeve 2202 is provided with a lower fixing groove 2204. The upper sleeve 2201 cooperates with the upper support block 1103 through the upper fixing groove 2203, and the lower sleeve 2202 cooperates with the protective cover 1116 through the lower fixing groove 2204. An insertion ring 2205 is fixedly connected to the bottom of the upper sleeve 2201, and three stops 2206 are fixedly connected to the surface of the insertion ring 2205. An annular groove 2207 is provided at the top of the lower fixing groove 2204, and three U-shaped grooves 2208 are provided on the annular groove 2207. The three stops 2206 cooperate with the three U-shaped grooves 2208 respectively.

[0051] In this embodiment, after the upper support block 1103 and the lower support block 1104 are connected, the operator can push the upper sleeve 2201 and the lower sleeve 2202 closer together, so that the upper support block 1103 enters the upper fixing groove 2203 of the upper sleeve 2201, and at the same time, the protective cover 1116 on the outside of the lower support block 1104 enters the lower fixing groove 2204 of the lower sleeve 2202. During the alignment of the upper sleeve 2201 and the lower sleeve 2202, the insertion ring 2205 at the bottom of the upper sleeve 2201 enters the annular groove 2207 of the lower sleeve 2202, and the stop block 2206 on the insertion ring 2205 slides along the U-shaped groove 2208 opened on the annular groove 2207 until the stop block 2206 moves to the other side of the U-shaped groove 2208, and then... Rotating the lower sleeve 2202 causes the stop block 2206 to slide into the transverse locking section of the U-shaped groove 2208, thereby tightly connecting the upper sleeve 2201 and the lower sleeve 2202 into a rigid whole. Thus, through the combination of the upper sleeve 2201 and the lower sleeve 2202, the load-bearing point is changed from the steel rope to the sleeve assembly 22 providing a large-area, stable contact support to the bottom of the rebar cage. This not only effectively ensures that the rebar cage remains horizontal during hoisting, but also fundamentally reduces the problem of radial compression on the rebar cage caused by the bending and tightening of the steel rope during traditional wire rope hoisting, which leads to the deformation of the rebar cage. In addition, the sleeve assembly 22 also provides auxiliary connection for the entire connection part during the connection and disconnection of the upper steel rope 1101 and the lower steel rope 1102.

[0052] As an example, such as Figure 2 As shown, the top of the lifting device is fixedly connected with multiple lifting lugs 7, and two auxiliary lifting assemblies 10 that can move relative to each other are set below the transverse main beam 1. Two main lifting assemblies 8 are set below the longitudinal small beam 6.

[0053] As an example, such as Figure 2 and Figure 7 As shown, the main lifting assembly 8 includes a main upper lifting ring 801, which is fixedly connected to the bottom of the longitudinal beam 6. A main lower lifting ring 802 is attached to the bottom of the main upper lifting ring 801. A main support frame 803 is fixedly connected to the bottom of the main lower lifting ring 802. Main hanging ports 804 are provided on both sides of the main support frame 803. The two main hanging ports 804 are respectively matched with the upper steel rope 1101 and the lower steel rope 1102.

[0054] As an example, such as Figure 2 and Figure 8As shown, the auxiliary lifting assembly 10 includes an upper auxiliary lifting ring 1001, which is located below the transverse main beam 1. An lower auxiliary lifting ring 1002 is attached to the bottom of the upper auxiliary lifting ring 1001. An auxiliary support frame 1003 is fixedly connected to the bottom of the lower auxiliary lifting ring 1002. Auxiliary hanging ports 1004 are provided on both sides of the auxiliary support frame 1003. The two auxiliary hanging ports 1004 are respectively matched with the upper steel rope 1101 and the lower steel rope 1102. A push rod 1005 is fixedly connected to one side of the upper auxiliary lifting ring 1001, and a push block 1006 is fixedly connected to the other end of the push rod 1005.

[0055] In this embodiment, when it is necessary to hoist the rebar cage, the upper steel rope 1101 and the lower steel rope 1102, which are already connected to each other, can be passed through the bottom of the rebar cage and sleeved on the rebar cage. Then, the other ends of the upper steel rope 1101 and the lower steel rope 1102 below the main hoisting assembly 8 are respectively suspended on the two main hanging ports 804 on the main support frame 803. At the same time, the other ends of the upper steel rope 1101 and the lower steel rope 1102 below the auxiliary hoisting assembly 10 are respectively suspended on the two auxiliary hanging ports 1004 on the auxiliary support frame 1003. Thus, the main support frame 803 and the auxiliary support frame 1003 work together with the upper sleeve 2201 and the lower sleeve 2202 to make the steel rope assembly 11, the sleeve assembly 22 and the support frame system cooperate with each other during the hoisting process to form a stable rectangular support structure, thereby more effectively lifting the bottom of the rebar cage.

[0056] As an example, such as Figures 9-11 As shown, the bottom of the transverse main beam 1 is fixedly connected to two sliding frames 9 and a support base 12. Two auxiliary upper lifting rings 1001 are slidably connected to the two sliding frames 9 respectively. The bottom of each of the two sliding frames 9 is provided with a groove for the auxiliary upper lifting rings 1001 to slide. The support base 12 is located between the two sliding frames 9. Two adjustment grooves 13 are provided on the support base 12. Two push blocks 1006 are slidably connected to the two adjustment grooves 13 respectively. Both adjustment grooves 13 are circular and match the shape of the two push blocks 1006. On the side of the two adjustment grooves 13 that are far apart from each other, there is a through groove 14. Pull ropes 15 are threaded through the two through grooves 14. One end of each pull rope 15 is fixedly connected to one side of the two push blocks 1006 respectively, and the other end of each pull rope 15 is fixedly connected to a hanging ring 18.

[0057] As an example, such as Figure 10 and Figure 11As shown, an adjusting spring 16 is fixedly connected to one side of the inner wall of each of the two adjusting grooves 13. The other end of each adjusting spring 16 is fixedly connected to one side of each of the two push blocks 1006. The two adjusting springs 16 are respectively sleeved on the two pull ropes 15. A limiting frame 17 is sleeved on each of the two pull ropes 15. The limiting frame 17 is a double-ring structure composed of two annular frames, which limits the two pull ropes 15. The limiting frame 17 is located below the support base 12. A limiting plate 19 is fixedly connected to the bottom of the limiting frame 17. Multiple hanging grooves 20 are opened on one side of the limiting plate 19. The hanging grooves 20 are inclined on the limiting plate 19 and are evenly distributed on the limiting plate 19. The hanging ring 18 cooperates with the hanging groove 20. A pull rod 21 is fixedly connected to the bottom of the limiting plate 19.

[0058] In this embodiment, the worker attaches the steel rope assembly 11 to the appropriate position of the steel cage according to the specific shape of the steel cage. When the distance between the two steel rope assemblies 11 on the side of the steel cage is small, while the distance between the two auxiliary lifting assemblies 10 on the upper transverse main beam 1 is large, the worker can pull the two pull ropes 15 simultaneously through the hanging ring 18. The pull ropes 15 drive the two push blocks 1006 to slide in the corresponding adjustment grooves 13 respectively, so that the two are close to each other. Then, the push rod 1005 pulls the two auxiliary lifting assemblies 10 to move towards each other in the sliding frame 9 to adjust the distance to fit the steel rope assembly 11 already fitted at the bottom. After the adjustment is completed, the worker can push the pull rod 21 to move the limiting plate 19 in the direction of the pull rope 15. The limiting frame 17 fits on the two pull ropes 15 and slides, thereby effectively limiting the pulled ropes 15. Then, the hanging ring 18 at the end of the pull rope 15 is attached to the hanging groove 20 on the side of the limiting plate 19 to further fix the position of the pull rope 15.

[0059] During the process of the two push blocks 1006 moving towards each other, the adjusting spring 16 located between the adjusting groove 13 and the push block 1006 is compressed, causing it to undergo elastic deformation and accumulate a reverse force. After the hoisting operation is completed, when the auxiliary hoisting assembly 10 needs to be reset, the workers only need to remove the hanging ring 18 from the hanging groove 20 and loosen it. Under the action of the reverse force of the adjusting spring 16, the two push blocks 1006 slide in opposite directions in the adjusting groove 13 and move away from each other, thereby driving the two auxiliary hoisting assemblies 10 to reset to their initial positions for easy reuse later.

[0060] A method for using a lifting tool for a steel cage of an ultra-large cross-section rectangular pipe jacking section includes the following steps:

[0061] Step 1: Pull the two ropes 15 by the hanging ring 18, thereby moving the two auxiliary lifting components 10 relative to each other and adjusting the position of the auxiliary lifting components 10. After adjustment, hang the hanging ring 18 in the hanging groove 20 on the limiting plate 19 to limit the adjusted ropes 15. Connect the upper steel rope 1101 and lower steel rope 1102 of the steel rope assembly 11 located below the main lifting component 8 to the two main hanging ports 804 respectively. Connect the upper steel rope 1101 and lower steel rope 1102 below the auxiliary lifting component 10 to the two auxiliary hanging ports 1004 respectively to lift the steel cage. Support the bottom of the steel cage by the sleeve assembly 22.

[0062] Step Two: After placing the rebar cage into the jacking pipe mold, the worker can push the lower steel rope 1102, causing the insertion block 1107 on the lower steel rope 1102 to continue deeper into the insertion groove 1105 at the bottom of the upper steel rope 1101. This causes the wedge block 1109 located in the limiting groove 1106 to rise and conform to the limiting groove 1106. Through the squeezing of the inclined surface on one side of the limiting groove 1106, the wedge block 1109 enters the guide groove 1108 on the insertion block 1107. The wedge block 1109 completely disengages from the limiting groove 1107. When the groove 1106 enters the guide groove 1108, the lower support block 1104 is rotated to make the insertion block 1107 rotate in the insertion groove 1105, so that the wedge block 1109 is no longer aligned with the limiting groove 1106. At this time, the insertion block 1107 can be removed from the insertion groove 1105 by pulling the lower support block 1104, so that the upper support block 1103 and the lower support block 1104 are separated, thereby completing the separation of the upper steel rope 1101 and the lower steel rope 1102, and the separated steel rope is taken out from the bottom of the steel cage.

[0063] Step 3: When it is necessary to connect the upper steel rope 1101 and the lower steel rope 1102 again, insert the insertion block on the lower steel rope 1102 back into the insertion groove 1105. When the insertion block 1107 enters the insertion groove 1105, the wedge block 1109 on the insertion block 1107 is squeezed, causing the wedge block 1109 to enter the guide groove 1108. When the wedge block 1109 enters the guide groove 1108, the wedge block 1109 slides and is limited on the guide rod 1113 through the sliding groove 1112, and the wedge block 1109... When 109 enters the guide groove 1108, it compresses the limiting spring 1111 between the wedge block 1109 and the guide groove 1108, causing the limiting spring 1111 to undergo elastic deformation. As the insertion block 1107 continues to enter the insertion groove 1105, when the wedge block 1109 aligns with the limiting groove 1106, it will pop out in the guide groove 1108, causing the wedge block 1109 to enter the limiting groove 1106 and block the insertion block 1107, thereby completing the connection operation between the upper support block 1103 and the lower support block 1104.

[0064] Working principle of this invention:

[0065] In use, firstly, one end of the upper steel rope 1101 and the lower steel rope 1102 are respectively attached to the two main attachment ports 804 of the main support frame 803 or the two auxiliary attachment ports 1004 of the auxiliary support frame 1003. Then, the other ends of the upper steel rope 1101 and the lower steel rope 1102 are passed over the bottom of the steel cage for connection. The upper steel rope 1101 and the lower steel rope 1102 are connected into a whole. Then, the lifting device is moved upward to lift the steel cage. During this process, the sleeve assembly 22 provides effective support to the bottom of the steel cage and works in conjunction with the main support frame 803 or the auxiliary support frame 1003 to significantly reduce the lateral compression on the steel cage.

[0066] After the steel cage is hoisted into the jacking pipe mold and positioned, the upper steel rope 1101 and the lower steel rope 1102 are separated, so that the upper sleeve 2201 and the lower sleeve 2202 are disengaged simultaneously, thereby smoothly pulling the entire sleeve assembly 22 out from the bottom of the steel cage.

[0067] Before the hoisting operation begins, the two auxiliary hoisting components 10 can be moved towards each other and closer to each other on the corresponding sliding frame 9 by pulling the pull rope 15, so as to adapt to the arrangement of the bottom steel rope component 11 and meet the hoisting requirements. After the operation is completed, the pull rope 15 is released, and the two auxiliary hoisting components 10 slide in opposite directions in the sliding frame 9 and automatically return to the initial position for easy subsequent use.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting device for a steel cage of an ultra-large cross-section rectangular jacking pipe section, comprising a transverse main beam (1), a longitudinal main beam (2), a transverse intermediate beam (3), a diagonal bracing beam (4), a transverse secondary beam (5), and a longitudinal secondary beam (6), characterized in that, The transverse main beam (1), longitudinal main beam (2), transverse intermediate beam (3), diagonal bracing beam (4), transverse small beam (5) and longitudinal small beam (6) cooperate to form a lifting device, and multiple steel rope assemblies (11) are provided below the lifting device. The steel rope assembly (11) includes an upper steel rope (1101) and a lower steel rope (1102). The upper support block (1103) and the lower support block (1104) are fixedly connected to the opposite ends of the upper steel rope (1101) and the lower steel rope (1102), respectively. An insertion groove (1105) is provided at the bottom of the upper support block (1103). Multiple limiting grooves (1106) are provided on the inner wall of the insertion groove (1105). An insertion block (1107) is fixedly connected to the top of the lower support block (1104). Multiple guide grooves (1108) are provided on the insertion block (1107). Wedge blocks (1109) are slidably connected in each of the multiple guide grooves (1108). Each of the multiple wedge blocks (1109) has an installation groove (1110) on one side, and a limit spring (1111) is fixedly connected to one side of each of the multiple installation grooves (1110). The other end of each of the multiple limit springs (1111) is connected to one side of each of the multiple guide grooves (1108). Each of the multiple wedge blocks (1109) has a sliding groove (1112) on one side, and a guide rod (1113) is fixedly connected to one side of each of the multiple guide grooves (1108). Each of the multiple wedge blocks (1109) is slidably connected to the guide rod (1113) through the sliding groove (1112). The bottom of the lower support block (1104) is fixedly connected to a plurality of cylinders (1114), and the top of the inner wall of each of the plurality of cylinders (1114) is fixedly connected to a push spring (1115). The other end of the plurality of push springs (1115) is fixedly connected to a protective cover (1116), and the protective cover (1116) is sleeved on the lower support block (1104). Each of the steel rope assemblies (11) is provided with a sleeve assembly (22). The sleeve assembly (22) includes an upper sleeve (2201) and a lower sleeve (2202). The bottom of the upper sleeve (2201) is provided with an upper fixing groove (2203), and the top of the lower sleeve (2202) is provided with a lower fixing groove (2204). An insertion ring (2205) is fixedly connected to the bottom of the upper sleeve (2201). Three stops (2206) are fixedly connected to the surface of the insertion ring (2205). An annular groove (2207) is provided at the top of the lower fixing groove (2204). Three U-shaped grooves (2208) are provided on the annular groove (2207). The three stops (2206) respectively cooperate with the three U-shaped grooves (2208).

2. The lifting tool for a steel cage of an ultra-large cross-section rectangular jacking pipe section according to claim 1, characterized in that, The top of the lifting device is fixedly connected with multiple lifting lugs (7), and two auxiliary lifting assemblies (10) that can move relative to each other are provided below the transverse main beam (1), and two main lifting assemblies (8) are provided below the longitudinal small beam (6).

3. The lifting tool for a steel cage of an ultra-large cross-section rectangular jacking pipe section according to claim 2, characterized in that, The main lifting assembly (8) includes a main upper lifting ring (801), which is fixedly connected to the bottom of the longitudinal beam (6). A main lower lifting ring (802) is attached to the bottom of the main upper lifting ring (801), and a main support frame (803) is fixedly connected to the bottom of the main lower lifting ring (802). Both sides of the main support frame (803) are provided with main hanging ports (804), and the two main hanging ports (804) are respectively matched with the upper steel rope (1101) and the lower steel rope (1102).

4. The lifting tool for a steel cage of an ultra-large cross-section rectangular jacking pipe section according to claim 2, characterized in that, The auxiliary lifting assembly (10) includes an upper auxiliary lifting ring (1001), which is located below the transverse main beam (1). An lower auxiliary lifting ring (1002) is attached to the bottom of the upper auxiliary lifting ring (1001). An auxiliary support frame (1003) is fixedly connected to the bottom of the lower auxiliary lifting ring (1002). Auxiliary hanging ports (1004) are provided on both sides of the auxiliary support frame (1003). The two auxiliary hanging ports (1004) are respectively matched with the upper steel rope (1101) and the lower steel rope (1102). A push rod (1005) is fixedly connected to one side of the upper auxiliary lifting ring (1001), and a push block (1006) is fixedly connected to the other end of the push rod (1005).

5. The lifting tool for a steel cage of an ultra-large cross-section rectangular jacking pipe section according to claim 4, characterized in that, The bottom of the transverse main beam (1) is fixedly connected to two sliding frames (9) and a support base (12). Two auxiliary upper lifting rings (1001) are slidably connected in the two sliding frames (9). The support base (12) has two adjustment grooves (13). The two push blocks (1006) are slidably connected in the two adjustment grooves (13). The two adjustment grooves (13) are provided with through grooves (14) on the side away from each other. Pull ropes (15) are threaded through the two through grooves (14). One end of the two pull ropes (15) is fixedly connected to one side of the two push blocks (1006). The other end of the two pull ropes (15) is fixedly connected to a hanging ring (18).

6. The lifting tool for a steel cage of an ultra-large cross-section rectangular jacking pipe section according to claim 5, characterized in that, One side of the inner wall of each of the two adjustment slots (13) is fixedly connected to an adjustment spring (16), and the other end of each of the two adjustment springs (16) is fixedly connected to one side of each of the two push blocks (1006). The two adjustment springs (16) are respectively sleeved on the two pull ropes (15), and a limiting frame (17) is sleeved on each of the two pull ropes (15). The limiting frame (17) is located below the support base (12). A limiting plate (19) is fixedly connected to the bottom of the limiting frame (17). Multiple hanging slots (20) are opened on one side of the limiting plate (19). The hanging ring (18) cooperates with the hanging slot (20). A pull rod (21) is fixedly connected to the bottom of the limiting plate (19).

7. A method for using a lifting device for a steel cage of an ultra-large cross-section rectangular pipe jacking section, applicable to the lifting device for an ultra-large cross-section rectangular pipe jacking section as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Pull the two ropes (15) by the hanging ring (18) to move the two auxiliary lifting components (10) relative to each other and adjust the position of the auxiliary lifting components (10). After adjustment, hang the hanging ring (18) in the hanging groove (20) on the limiting plate (19) to limit the adjusted ropes (15). Connect the upper steel rope (1101) and lower steel rope (1102) of the steel rope assembly (11) located below the main lifting component (8) to the two main hanging ports (804) respectively. Connect the upper steel rope (1101) and lower steel rope (1102) below the auxiliary lifting component (10) to the two auxiliary hanging ports (1004) respectively to lift the steel cage and support the bottom of the steel cage through the sleeve assembly (22). Step Two: After placing the rebar cage into the jacking pipe mold, the worker pushes the lower steel rope (1102), causing the insertion block (1107) on the lower steel rope (1102) to continue to penetrate deeper into the insertion groove (1105) at the bottom of the upper steel rope (1101). This causes the wedge block (1109) located in the limiting groove (1106) to rise and conform to the limiting groove (1106). Through the squeezing of the inclined surface on one side of the limiting groove (1106), the wedge block (1109) enters the guide groove (1108) on the insertion block (1107). When the cable is completely separated from the limiting groove (1106) and enters the guide groove (1108), the insertion block (1107) is rotated in the insertion groove (1105) by rotating the lower support block (1104), so that the wedge block (1109) is no longer aligned with the limiting groove (1106). At this time, the insertion block (1107) is taken out in the insertion groove (1105) by pulling the lower support block (1104), so that the upper support block (1103) and the lower support block (1104) are separated, thereby completing the separation of the upper steel rope (1101) and the lower steel rope (1102). Step 3: When it is necessary to connect the upper steel rope (1101) and the lower steel rope (1102) again, insert the insertion block on the lower steel rope (1102) back into the insertion groove (1105). When the insertion block (1107) enters the insertion groove (1105), squeeze the wedge block (1109) on the insertion block (1107) so that the wedge block (1109) enters the guide groove (1108). When the wedge block (1109) enters the guide groove (1108), the wedge block (1109) slides and is limited on the guide rod (1113) through the slide groove (1112), and the wedge block (1109) slides and is limited on the guide rod (1113) through the slide groove (1112). 109) When entering the guide groove (1108), the limiting spring (1111) between the wedge block (1109) and the guide groove (1108) is squeezed, causing the limiting spring (1111) to undergo elastic deformation. As the insert block (1107) continues to enter the insert groove (1105), when the wedge block (1109) is aligned with the limiting groove (1106), it will pop out in the guide groove (1108), causing the wedge block (1109) to enter the limiting groove (1106) and block the insert block (1107), thereby completing the connection operation of the upper support block (1103) and the lower support block (1104).

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