Assembling structure of segment assembling bridge girder erection machine

Abstract

The utility model discloses an assembling structure of a segment assembling bridge girder erection machine, which comprises a hoisting assembly, an assembling mechanism is arranged at the bottom end of the hoisting assembly, the assembling mechanism comprises a top frame, a bottom frame, a connecting plate, a mounting plate and a supporting rod, the top frame is arranged at the bottom end of the hoisting assembly, the bottom frame is arranged below the top frame, and the connecting plate is arranged on the bottom frame. The connecting plates are installed between the top frames, the installing plates are installed on the top frames and the bottom frame respectively, the supporting rods are installed on the installing plates by arranging the fixing mechanisms at the two ends, and each fixing mechanism comprises a fixing rod, a fixing sleeve, a clamping block, a locking sleeve, a fixing groove, teeth and a tooth groove. The fixing rod is inserted into the supporting rod, and the fixing sleeve is arranged above the fixing rod, so that the technical problems that the overall assembling efficiency of the bridge girder erection machine is reduced due to the tedious installation process in the background technology, and rapid installation and fixation cannot be achieved are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge erection machines, and more particularly to an assembly structure of a segment-assembling bridge erection machine. Background Art

[0002] In existing technologies, the construction environment and requirements may change significantly at different stages of bridge construction, which requires corresponding adjustments and reconfigurations of the bridge-building machine. Before each use of the bridge-building machine, workers need to perform detailed assembly work, among which the installation of support rods is a particularly critical and time-consuming step. As an important structure that provides stable support for the support beams, the support rods are usually large in number, and may reach dozens or even hundreds. Traditional installation methods usually require the use of a large number of bolts for fixing. Each support rod may require multiple bolts to ensure its stability. This tedious installation process not only requires a lot of manpower and time, but also increases the possibility of errors. Therefore, the installation of support rods has become a major bottleneck in the entire bridge-building machine assembly process, significantly reducing the overall assembly efficiency of the bridge-building machine. This reduction in efficiency directly affects the progress of bridge construction, which may lead to extended construction period and increased construction costs.

[0003] The traditional support rod installation method not only affects the assembly efficiency, but also has some other significant disadvantages. First, due to the need to use a large number of bolts, it is impossible to achieve quick installation and fixation. The staff needs to spend a lot of time to ensure that each bolt is correctly installed and tightened. This process is not only time-consuming, but also prone to improper installation due to operational errors, affecting the stability of the overall structure. Secondly, when the bridge crane configuration needs to be adjusted or maintenance needs to be performed, the traditional method is also unable to achieve rapid disassembly. The disassembly process may be as time-consuming as the installation, or even more difficult, because the bolts may rust or deform after long-term use. This lack of flexibility in design greatly limits the adaptability of the bridge crane in different construction stages. In an emergency, such as when rapid adjustment or evacuation of equipment is required, this slow disassembly process may cause serious safety hazards. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the problems existing in the prior art, the utility model provides an assembly structure for a segmented assembly bridge-building machine to solve the technical problem mentioned in the background technology that the cumbersome installation process reduces the overall assembly efficiency of the bridge-building machine and cannot achieve rapid installation and fixation.

[0006] (2) Technical solution

[0007] The lifting mechanism is a lifting mechanism, and its first end is connected with the lifting mechanism of the lifting mechanism by the lifting mechanism, and its first end is connected with the lifting mechanism of the lifting mechanism by the lifting mechanism.

[0008] The utility model is further configured such that reinforcing rods are connected between the multiple groups of mounting plates. This design makes the entire bridge-building machine more stable during heavy-load operation, thereby improving the safety and durability of the equipment. At the same time, the presence of the reinforcing rods also makes the entire structure more compact, thereby reducing vibration and noise caused by loose structure.

[0009] The utility model is further configured such that a resistance spring is installed at the bottom end of the fixing rod and a resistance plate is installed at the top end of the resistance spring. This mechanism not only improves the reliability of the connection and extends the service life of the components, but also simplifies the installation process because it can automatically adapt to slight dimensional errors.

[0010] The utility model is further configured such that a top spring is installed at the top end of the fixing sleeve, and a top plate is installed at the bottom end of the top spring. This mechanism not only improves the reliability of the connection, but also increases the fault tolerance of the system, so that even when there are slight deviations in the component sizes, a good connection effect can be maintained.

[0011] The utility model is further configured such that push springs are connected between multiple groups of the card blocks and the fixed sleeves. The push springs ensure that the card blocks can automatically return to their positions, and the unlocking action can be completed without manual intervention. This not only simplifies the operating process, but also improves the speed and reliability of unlocking.

[0012] The utility model is further configured as follows: the outer wall of the fixing rod is provided with a positioning strip, and the positioning strips are provided in multiple groups; the inner wall of the fixing sleeve is provided with a positioning groove, and the positioning grooves are provided in multiple groups and are adapted to the multiple groups of positioning strips. The cooperation of the multiple groups of positioning strips and the positioning grooves not only ensures the accurate position of the fixing rod in the fixing sleeve, but also prevents the fixing rod from rotating in the fixing sleeve. This precise positioning mechanism greatly reduces installation errors and improves the stability and reliability of the entire support structure.

[0013] The utility model is further configured as follows: a limit control mechanism is provided on the outside of the fixed sleeve, and the limit control mechanism includes a control sleeve, an inner gear ring, a screw, a gear, an annular groove, a limit block and a limit groove, the control sleeve is rotatably mounted on the top of the fixed sleeve, the inner gear ring is mounted on the bottom of the control sleeve, the screw is provided with multiple groups of rotatable mountings on the fixed sleeve and threadedly connected with the locking sleeve, the gear is mounted on the top of multiple groups of the screw, the annular groove is provided in the control sleeve, the limit block is provided with multiple groups of sliding mountings on the control sleeve and the top end extends into the annular groove, the limit groove is provided with multiple groups distributed on the outer wall of the fixed sleeve and adapted to the multiple groups of limit blocks. Through the rotation of the control sleeve, the operator can accurately control the up and down movement of the lock sleeve, thereby accurately controlling the locking and unlocking of the card block. This precise control not only improves the reliability of the fixing mechanism, but also greatly reduces the possibility of operational errors. The design of multiple groups of limit blocks and limit grooves provides additional safety protection, ensuring that the lock sleeve is locked in the correct position to prevent accidental movement.

[0014] The present invention further provides that connecting springs are provided between the outer ends of the plurality of limit blocks and the inner wall of the annular groove. The provision of the connecting springs further enhances the reliability and flexibility of the limit control mechanism, ensuring that the limit blocks can automatically return to their original positions and unlocking can be completed without manual intervention.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides an assembly structure for a segmented bridge erection machine, which has the following beneficial effects:

[0017] 1. The assembly mechanism forms a stable frame structure through the top frame, bottom frame, connecting plate, mounting plate and support rod, realizing the function of rapid assembly and disassembly. The top frame is connected to the lifting components, and the bottom frame is located below. Multiple sets of connecting plates increase lateral stability, and multiple sets of mounting plates provide connection points for the support rods. The reinforcing rods further enhance the structural strength. This design not only improves assembly efficiency, but also ensures sufficient strength and stability to meet the needs of different construction stages.

[0018] 2. The fixing mechanism realizes a firm connection between the support rod and the mounting plate through components such as the fixing rod, the fixing sleeve, the card block, the locking sleeve, the fixing groove, the teeth and the tooth groove. The fixing rod is inserted into the support rod, the fixing sleeve is put on the fixing rod, and the card block engages with the tooth groove of the locking sleeve through the teeth to achieve locking. The resisting spring, the resisting plate, the top spring and the top plate provide buffering and adjustment functions. The push spring ensures that the card block automatically returns to its position. The positioning strip and the positioning groove ensure the installation accuracy. This design greatly improves the stability and reliability of the connection while maintaining the convenience of quick installation and disassembly.

[0019] 3. The limit control mechanism realizes precise control of the position of the lock sleeve through components such as the control sleeve, internal gear ring, screw, gear, annular groove, limit block and limit groove. The rotation of the control sleeve is transmitted through the internal gear ring, gear and screw to accurately control the up and down movement of the lock sleeve. The limit block can slide into the limit groove under the action of the connecting spring to achieve additional locking. This design not only improves the operating accuracy, but also increases safety, making the entire fixing process more reliable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the assembly structure of a segmented assembling bridge erecting machine in the present invention;

[0021] Figure 2 It is a structural diagram of the assembly mechanism in the utility model;

[0022] Figure 3 It is a structural diagram of the assembled mechanism and the fixed mechanism in the present invention in the disassembled state;

[0023] Figure 4 This is a schematic cross-sectional view of the fixing mechanism of the present invention;

[0024] Figure 5 This is a schematic cross-sectional structural diagram of the fixing sleeve in the present utility model;

[0025] Figure 6 It is a schematic cross-sectional view of the position limiting control mechanism of the present invention.

[0026] In the figure: 1. Lifting assembly; 2. Top frame; 3. Base frame; 4. Connecting plate; 5. Mounting plate; 6. Support rod; 7. Fixing rod; 8. Fixing sleeve; 9. Block; 10. Locking sleeve; 11. Fixing groove; 12. Teeth; 13. Tooth groove; 14. Reinforcement rod; 15. Retaining spring; 16. Retaining plate; 17. Top spring; 18. Top plate; 19. Push spring; 20. Positioning strip; 21. Positioning groove; 22. Control sleeve; 23. Inner gear ring; 24. Screw; 25. Gear; 26. Annular groove; 27. Limit block; 28. Limiting groove; 29. ​​Connecting spring. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0030] See also Figures 1-6 , an assembly structure of a segmented assembly bridge erection machine, including a lifting assembly 1, an assembly mechanism is provided at the bottom end of the lifting assembly 1, the assembly mechanism includes a top frame 2, a bottom frame 3, a connecting plate 4, a mounting plate 5 and a support rod 6, the top frame 2 is provided at the bottom end of the lifting assembly 1, the bottom frame 3 is provided below the top frame 2, the connecting plate 4 is provided with multiple groups and is installed between the top frames 2, the mounting plate 5 is provided with multiple groups and is respectively installed on the top frame 2 and the bottom frame 3, the support rod 6 is provided with multiple groups and both ends are installed on the multiple mounting groups by a fixing mechanism. On the plate 5, the fixing mechanism includes a fixing rod 7, a fixing sleeve 8, a card block 9, a locking sleeve 10, a fixing groove 11, teeth 12 and a tooth groove 13. The fixing rod 7 is inserted into the support rod 6, the fixing sleeve 8 is arranged above the fixing rod 7, the card block 9 is provided with multiple groups of rotatable installations on the fixing sleeve 8, the locking sleeve 10 slides on the outside of the fixing sleeve 8, the fixing groove 11 is provided with multiple groups distributed on the outside of the fixing rod 7, the teeth 12 are provided at the bottom of the multiple groups of card blocks 9, and the tooth groove 13 is provided on the inner wall of the locking sleeve 10 and engages with the multiple groups of teeth 12.

[0031] Reinforcement rods 14 are provided between the multiple groups of mounting plates 5. The reinforcement rods 14 connect the multiple groups of mounting plates 5 to form a grid-like support structure. This design utilizes the stability principle of the triangular structure and significantly improves the rigidity and strength of the entire frame by increasing lateral connections.

[0032] A resistance spring 15 is installed at the bottom end of the fixing rod 7, and a resistance plate 16 is installed at the top end of the resistance spring 15. The resistance spring 15 and the resistance plate 16 form an elastic buffer system. When the fixing rod 7 is inserted into the support rod 6, the resistance plate 16 first contacts the inner wall of the support rod 6, and the resistance spring 15 provides an upward elastic force.

[0033] A top spring 17 is installed at the top end of the fixing sleeve 8, and a top plate 18 is installed at the bottom end of the top spring 17. The top spring 17 and the top plate 18 form an upper buffer system. When the fixing sleeve 8 is sleeved on the fixing rod 7, the top plate 18 contacts the top of the fixing rod 7, and the top spring 17 provides a downward elastic force.

[0034] A push spring 19 is connected between multiple groups of card blocks 9 and the fixed sleeve 8. The push spring 19 is connected between each card block 9 and the fixed sleeve 8 to provide an outward elastic force for the card block 9. When the lock sleeve 10 moves up, the push spring 19 pushes the card block 9 to rotate outward, so that it disengages from the fixed groove 11 of the fixed rod 7. When the lock sleeve 10 moves down, the tooth groove 13 on the inner wall of the lock sleeve 10 engages with the teeth 12 at the bottom end of the card block 9, overcoming the force of the push spring 19, causing the card block 9 to rotate inward and snap into the fixed groove 11.

[0035] The outer wall of the fixing rod 7 is provided with a positioning strip 20, and there are multiple groups of positioning strips 20. The inner wall of the fixing sleeve 8 is provided with a positioning groove 21, and there are multiple groups of positioning grooves 21 and adapted to the multiple groups of positioning strips 20. The multiple groups of positioning strips 20 on the outer wall of the fixing rod 7 and the multiple groups of positioning grooves 21 on the inner wall of the fixing sleeve 8 form a precise positioning system. When the fixing rod 7 is inserted into the fixing sleeve 8, the positioning strips 20 will slide into the corresponding positioning grooves 21 to ensure the correct position and direction of the fixing rod 7 in the fixing sleeve 8.

[0036] In this embodiment, in actual use, the bottom frame of the lifting assembly 1 is first quickly assembled through the assembling mechanism. The assembling mechanism forms a stable frame structure through the top frame 2, the bottom frame 3, the connecting plate 4, the mounting plate 5 and the support rod 6. The top frame 2 is connected to the bottom end of the lifting assembly 1, and the bottom frame 3 is located below. Multiple groups of connecting plates 4 are installed between the top frame 2 to increase lateral stability. Multiple groups of mounting plates 5 are respectively installed on the top frame 2 and the bottom frame 3 to provide connection points for the support rods 6. Multiple groups of support rods 6 are installed on the mounting plate 5 through a fixing mechanism to form the skeleton of the entire assembling mechanism. The reinforcing rod 14 connects the multiple groups of mounting plates 5 to further enhance the structural strength. This design enables the assembling mechanism to be quickly assembled and disassembled while ensuring sufficient strength and stability. The fixing mechanism is used to firmly connect the support rods 6 to the mounting plate 5, and the fixing rods 7 are inserted into the support rods When the locking sleeve 10 moves down, the tooth groove 13 engages with the tooth teeth 12, pushing the card block 9 to rotate inward, so that the card block 9 is stuck in the fixed groove 11 on the outer side of the fixed rod 7, thereby locking the fixed rod 7. The resisting spring 15 and the resisting plate 16 at the bottom end of the fixed rod 7, as well as the top spring 17 and the top plate 18 at the top end of the fixed sleeve 8, all help to adjust and buffer the force and improve the stability of the fixation. The push spring 19 between the multiple groups of card blocks 9 and the fixed sleeve 8 ensures that the card block 9 can automatically return to its original position. The positioning strip 20 on the outer wall of the fixed rod 7 cooperates with the positioning groove 21 on the inner wall of the fixed sleeve 8 to further ensure the accuracy of the installation position.

[0037] See also Figure 6 As an implementation method of the limit control mechanism: a limit control mechanism is set on the outside of the fixed sleeve 8, and the limit control mechanism includes a control sleeve 22, an inner gear ring 23, a screw 24, a gear 25, an annular groove 26, a limit block 27 and a limit groove 28. The control sleeve 22 is rotatably mounted on the top of the fixed sleeve 8, the inner gear ring 23 is mounted on the bottom of the control sleeve 22, the screw 24 is provided with multiple groups of rotatable mountings on the fixed sleeve 8 and threadedly connected with the lock sleeve 10, the gear 25 is mounted on the top of the multiple groups of screws 24, the annular groove 26 is set in the control sleeve 22, and the limit block 27 is provided with multiple groups. It is slidably mounted on the control sleeve 22 and its top end extends into the annular groove 26. A plurality of limit grooves 28 are provided on the outer wall of the fixing sleeve 8 and are adapted to the plurality of limit blocks 27. By rotating the control sleeve 22, the operator can precisely control the up and down movement of the locking sleeve 10, thereby precisely controlling the locking and unlocking of the card block 9. This precise control not only improves the reliability of the fixing mechanism, but also greatly reduces the possibility of operational errors. The design of the plurality of limit blocks 27 and the limit grooves 28 provides additional safety protection, ensuring that the locking sleeve 10 is locked in the correct position to prevent accidental movement.

[0038] Connecting springs 29 are connected between the outer ends of multiple groups of limit blocks 27 and the inner walls of the annular grooves 26. When the control sleeve 22 rotates to a suitable position, the elastic force of the connecting springs 29 will push the limit blocks 27 to slide quickly into the limit grooves 28, achieving fast and accurate locking.

[0039] More specifically, the limit control mechanism is installed on the outside of the fixed sleeve 8 for accurately controlling the position of the locking sleeve 10. The control sleeve 22 is rotatably installed on the top of the fixed sleeve 8. The inner gear ring 23 at the bottom end meshes with the gear 25 at the top of the multiple sets of screws 24. The screws 24 are threadedly connected to the locking sleeve 10. Therefore, the rotation of the control sleeve 22 can be transmitted by the gear 25 and the screw 24 to accurately control the up and down movement of the locking sleeve 10. An annular groove 26 is provided in the control sleeve 22. Multiple sets of limit blocks 27 are slidably installed on the control sleeve 22, and the top ends extend into the annular groove 26. The outer wall of the fixed sleeve 8 is provided with multiple sets of limit grooves 28, which cooperate with the limit blocks 27. When the control sleeve 22 rotates to a specific position, the limit blocks 27 slide into the limit grooves 28 under the action of the connecting springs 29 to achieve locking. This design not only ensures the accuracy of the operation, but also provides additional safety.

[0040] In summary, when the overall equipment is in use or running: in actual use, first, the bottom frame of the lifting component 1 is quickly assembled through the assembling mechanism, and the assembling mechanism forms a stable frame structure through the top frame 2, the bottom frame 3, the connecting plate 4, the mounting plate 5 and the support rod 6. The top frame 2 is connected to the bottom end of the lifting component 1, and the bottom frame 3 is located below. Multiple groups of connecting plates 4 are installed between the top frame 2 to increase lateral stability. Multiple groups of mounting plates 5 are respectively installed on the top frame 2 and the bottom frame 3 to provide connection points for the support rod 6. Multiple groups of support rods 6 are installed on the mounting plate 5 through the fixing mechanism to form the skeleton of the entire assembling mechanism. The reinforcing rod 14 connects the multiple groups of mounting plates 5 to further enhance the structural strength. This design enables the assembling mechanism to be quickly assembled and disassembled while ensuring sufficient strength and stability. The fixing mechanism is used to firmly connect the support rod 6 to the mounting plate 5, and the fixing rod 7 When the locking sleeve 10 moves down, the tooth groove 13 engages with the tooth teeth 12, pushing the card block 9 to rotate inward, so that the card block 9 is stuck in the fixing groove 11 on the outer side of the fixing rod 7, thereby locking the fixing rod 7. The resisting spring 15 and the resisting plate 16 at the bottom end of the fixing rod 7, as well as the top spring 17 and the top plate 18 at the top end of the fixing sleeve 8, all help to adjust and buffer the force and improve the stability of the fixation. The push spring 19 between the multiple groups of card blocks 9 and the fixing sleeve 8 ensures that the card block 9 can automatically return to its original position. The positioning strip 20 on the outer wall of the fixing rod 7 cooperates with the positioning groove 21 on the inner wall of the fixing sleeve 8 to further ensure the accuracy of the installation position.

[0041] The limit control mechanism is installed on the outside of the fixed sleeve 8 and is used to accurately control the position of the locking sleeve 10. The control sleeve 22 is rotatably installed on the top of the fixed sleeve 8. The inner gear ring 23 at the bottom end engages with the gear 25 at the top of the multiple sets of screws 24. The screws 24 are threadedly connected to the locking sleeve 10. Therefore, the rotation of the control sleeve 22 can be transmitted by the gear 25 and the screw 24 to accurately control the up and down movement of the locking sleeve 10. The annular groove 26 is provided in the control sleeve 22, and multiple sets of limit blocks 27 are slidably installed on the control sleeve 22, and the top ends extend into the annular groove 26. The outer wall of the fixed sleeve 8 is provided with multiple sets of limit grooves 28, which cooperate with the limit blocks 27. When the control sleeve 22 rotates to a specific position, the limit blocks 27 slide into the limit grooves 28 under the action of the connecting springs 29 to achieve locking. This design not only ensures the accuracy of operation, but also provides additional safety.

[0042] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An assembly structure of a segmented bridge erection machine, comprising a lifting assembly (1), characterized in that: The bottom end of the lifting assembly (1) is provided with an assembly mechanism, and the assembly mechanism includes a top frame (2), a bottom frame (3), a connecting plate (4), a mounting plate (5) and a support rod (6). The top frame (2) is provided at the bottom end of the lifting assembly (1), and the bottom frame (3) is provided below the top frame (2). The connecting plate (4) is provided with multiple groups and is installed between the top frames (2). The mounting plates (5) are provided with multiple groups and are respectively installed on the top frame (2) and the bottom frame (3). The support rod (6) is provided with multiple groups and both ends are installed on multiple groups of the mounting plates (5) by means of a fixing mechanism. The fixing mechanism includes a fixing rod (7), A fixing sleeve (8), a clamping block (9), a locking sleeve (10), a fixing groove (11), teeth (12) and a tooth groove (13); the fixing rod (7) is plugged into the support rod (6); the fixing sleeve (8) is arranged above the fixing rod (7); the clamping block (9) is provided with multiple groups of teeth rotatably mounted on the fixing sleeve (8); the locking sleeve (10) slides on the outside of the fixing sleeve (8); the fixing groove (11) is provided with multiple groups distributed on the outside of the fixing rod (7); the teeth (12) are provided at the bottom ends of multiple groups of the clamping blocks (9); the tooth groove (13) is provided on the inner wall of the locking sleeve (10) and meshes with the multiple groups of teeth (12).

2. The assembly structure of a segmented bridge erection machine according to claim 1, characterized in that: Reinforcement rods (14) are connected between the multiple groups of mounting plates (5).

3. The assembly structure of a segmented bridge erection machine according to claim 2, characterized in that: A resisting spring (15) is installed at the bottom end of the fixing rod (7), and a resisting plate (16) is installed at the top end of the resisting spring (15).

4. The assembly structure of a segment assembly bridge erecting machine according to claim 3 is characterized by: A top spring (17) is installed at the top end of the fixing sleeve (8), and a top plate (18) is installed at the bottom end of the top spring (17).

5. The assembly structure of a segmented bridge erection machine according to claim 4 is characterized in that: multiple groups A push spring (19) is connected between the clamping block (9) and the fixing sleeve (8).

6. The assembly structure of a segment-assembly bridge-erecting machine according to claim 5, characterized in that: The outer wall of the fixing rod (7) is provided with a positioning strip (20), and the positioning strip (20) is provided in multiple groups. The inner wall of the fixing sleeve (8) is provided with a positioning groove (21), and the positioning groove (21) is provided in multiple groups and is adapted to the multiple groups of the positioning strips (20).

7. The assembly structure of a segmented bridge erection machine according to claim 6, characterized in that: A limit control mechanism is provided on the outside of the fixed sleeve (8), and the limit control mechanism includes a control sleeve (22), an inner gear ring (23), a screw (24), a gear (25), an annular groove (26), a limit block (27) and a limit groove (28). The control sleeve (22) is rotatably mounted on the top of the fixed sleeve (8), and the inner gear ring (23) is mounted on the bottom of the control sleeve (22). The screw (24) is provided with multiple groups of rotatably mounted on the fixed sleeve (8) and threadedly connected to the lock sleeve (10). The gear (25) is installed on the top of multiple groups of the screw (24). The annular groove (26) is provided in the control sleeve (22). The limit block (27) is provided with multiple groups of slidingly mounted on the control sleeve (22) and the top of the limit block extends into the annular groove (26). The limit groove (28) is provided with multiple groups distributed on the outer wall of the fixed sleeve (8) and adapted to the multiple groups of the limit blocks (27).

8. The assembly structure of a segmented bridge erection machine according to claim 7 is characterized by: multiple groups A connecting spring (29) is provided between the outer end of the limit block (27) and the inner wall of the annular groove (26).

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