Tensioning trolley and method for underground prefabricated part

Abstract

The invention discloses a tensioning trolley and method for underground prefabricated parts, solves the problem that in the prior art, tensioning equipment is prone to damaging the prefabricated parts, and has the beneficial effects that the underground prefabricated parts can be transversely assembled, transverse tensioning is facilitated, longitudinal tensioning is achieved, and damage to the underground prefabricated parts is avoided. According to the specific scheme, the tensioning trolley for the underground prefabricated part comprises a main body structure, the main body structure can move along the surface of the underground prefabricated part, lateral beams are arranged on the two sides of the top of the main body structure correspondingly, the lateral beams can conduct X-direction telescopic movement relative to the main body structure, and multi-direction telescopic arms are arranged at the two ends of each lateral beam correspondingly; the multi-direction telescopic arm can stretch in the Y direction and the Z direction, a first clamping piece is arranged at the bottom of the multi-direction telescopic arm so as to clamp the first prefabricated part from one side, and the lateral beam is provided with a plurality of sliding telescopic arms capable of stretching in the Z direction.

Description

Technical Field

[0001] The invention relates to the technical field of urban underground space, in particular to a tensioning trolley and method for underground prefabricated components. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In recent years, roadbed U-shaped troughs have been widely promoted. The roadbed U-shaped troughs are constructed with assembled U-shaped troughs. The U-shaped troughs are important sections connecting the ground and underground, and are mostly assembled in sections. The roadbed U-shaped troughs are divided into horizontal and vertical assembly during the assembly process. First, horizontal assembly is carried out using thin-walled jacks, and then vertical assembly is carried out using tensioning jacks. Two types of equipment are required during the assembly process, but integration has not been achieved. At the same time, when the thin-walled jacks are tensioned, a certain amount of space is required on both sides. The space that needs to be moved leads to a large amount of excavation for the roadbed U-shaped trough, and the deformation of the foundation pit will also affect the accuracy of this space, which will lead to the possibility that the thin-walled jacks cannot be installed.

[0004] Chinese patent application CN202220638861.2 discloses an integrated pipe gallery assembly machine, which realizes horizontal and vertical assembly and effectively improves the assembly speed of prefabricated components. However, it has the following problems: the overall structural setting is relatively complicated, and tensioning is not achieved, and other equipment is needed for tensioning; other existing technologies also have tensioning equipment, but they use inner ceiling tensioning, which is prone to local stress concentration and easily causes damage to prefabricated components; in addition, during horizontal tensioning, there is also a phenomenon of uneven force. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a tensioning trolley for underground prefabricated components. The overall use of the trolley greatly improves the assembly speed and overall stability of the underground prefabricated components and reduces the damage to the underground prefabricated structure.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A tensioning trolley for underground prefabricated components comprises a main structure, the main structure has a set height, the main structure can move along the surface of the underground prefabricated components, lateral beams are respectively arranged on both sides of the top of the main structure, the lateral beams can perform telescopic movement in the X direction relative to the main structure, multi-directional telescopic arms are respectively arranged at both ends of the lateral beams, the multi-directional telescopic arms can perform telescopic movement in the Y direction and the Z direction, a first clamping piece is arranged at the bottom of the multi-directional telescopic arm to clamp the first prefabricated component from one side, the lateral beam is provided with a plurality of sliding telescopic arms that can perform telescopic movement in the Z direction, a support plate is arranged at the bottom end of some of the sliding telescopic arms, a tensioning device realizes tensioning of two adjacent sections of underground prefabricated components by tensioning tensioning steel bars, and a second clamping piece is arranged at the bottom of some of the sliding telescopic arms to clamp the second prefabricated component from one side.

[0008] In the tensioning trolley for underground prefabricated components as described above, the lateral beam is provided with a slide groove along the length direction of the lateral beam, i.e., along the Y direction, and the top end of the sliding telescopic arm is adapted to the slide groove so that the sliding telescopic arm can move along the slide groove.

[0009] In the tensioning trolley for underground prefabricated components as described above, the first clamping member and the second clamping member are both suction cups, and the opening side of the suction cup is arranged toward the first prefabricated component or the second prefabricated component. The arrangement of the suction cups on both sides can be beneficial to the stable clamping of the first prefabricated component and the second prefabricated component.

[0010] In the above-mentioned tensioning trolley for underground prefabricated components, the lateral beam is connected to the main structure via an X-direction telescopic rod, so that the lateral beam can be extended and retracted in the longitudinal direction relative to the main structure;

[0011] The lateral beam has the same length as the main structure, and the multi-directional telescopic arm and the lateral beam are located in the same plane.

[0012] A tensioning trolley for underground prefabricated components as described above, wherein part of the tensioning device is located on the side of the first prefabricated component, and part of the tensioning device is located on the side of the second prefabricated component;

[0013] The tensioning device tensions the tensioning steel bar, one end of which is fixed to the outside of an underground prefabricated component, and the tensioning steel bar is connected to the tensioning device after passing through two sections of the underground prefabricated components.

[0014] As described above, a tensioning trolley for underground prefabricated components considers that the underground prefabricated components are assembled sequentially, and the tensioning device is arranged on one side of the main structure, and the tensioning device is arranged on both sides of the second clamping member.

[0015] As described above, a tensioning trolley for underground prefabricated components, the multi-directional telescopic arm includes an X-directional telescopic section and a vertical telescopic section, the telescopic end of the X-directional telescopic section is connected to the end of the lateral beam, the X-directional telescopic section and the lateral beam are located in the same plane, the fixed end of the X-directional telescopic section is connected to the fixed end of the vertical telescopic section, the telescopic end of the vertical telescopic section fixes the first clamping member, the first clamping member can be moved to the side of the first prefabricated component by the arrangement of the multi-directional telescopic arm, and the multi-directional telescopic arms on both sides can ensure stable clamping of the first prefabricated component through the first clamping member.

[0016] As described above, a tensioning trolley for underground prefabricated components, the main structure includes a steel structure frame, the steel structure frame is U-shaped, the bottom end of the steel structure frame is connected to the bottom plate, a bottom plate is arranged on the bottom side of the bottom plate, and rollers are arranged at the bottom of the bottom plate, and the rollers can move the tensioning trolley to a position suitable for tensioning the prefabricated components.

[0017] As described above, a tensioning trolley for underground prefabricated components has a plurality of Z-direction telescopic support legs arranged at the bottom of the main structure, and a seismic isolation pad is arranged at the bottom of the Z-direction telescopic support legs. The height of the main structure can be adjusted by the Z-direction telescopic support legs. The Z-direction telescopic support legs cooperate with the setting of the seismic isolation pad to play an important supporting role before the transverse tensioning and longitudinal tensioning reach strength.

[0018] In a second aspect, the present invention further provides a tensioning method for underground prefabricated components, using the tensioning trolley for underground prefabricated components, comprising the following contents:

[0019] The tensioned steel bars pass through the underground prefabricated components that have been assembled;

[0020] The main structure moves along the surface of the underground prefabricated component that has been assembled to the top of the second prefabricated component to be assembled next, and the tensioned steel bars are arranged through the first prefabricated component and the second prefabricated component to be assembled;

[0021] The lateral beam is extended in the X direction relative to the main structure, so that the lateral beam moves to the outside of the second prefabricated component;

[0022] The sliding telescopic arm extends along the Z direction, so that the second clamping member moves to the side of the second prefabricated component, and the second clamping members on both sides clamp the second prefabricated component;

[0023] The multi-directional telescopic arm is extended in the Y direction and the Z direction, so that the first clamping member moves to the side of the first prefabricated component, and the first clamping members on both sides clamp the first prefabricated component;

[0024] The multi-directional telescopic arm is retracted in the Y direction, so that the first prefabricated component is docked with the second prefabricated component, and the first prefabricated component and the second prefabricated component are assembled horizontally;

[0025] The lateral beam close to the underground prefabricated component that has been assembled is retracted, the telescopic arm with the tensioning device is extended and retracted, the tensioning device is extended and retracted to be connected with the corresponding tensioning steel bars, and the tensioning device works to connect the first prefabricated component and the second prefabricated component with the underground prefabricated component that has been assembled to achieve longitudinal assembly.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1) The tensioning trolley structure of the present invention is simple and reasonable, and can realize the transverse assembly and longitudinal tensioning of underground prefabricated components. Lateral beams are arranged on both sides of the main structure, and the lateral beams can be extended or retracted relative to the main structure, so as to avoid bumping and other damages to the underground prefabricated components during the movement of the tensioning trolley. Multi-directional telescopic arms are arranged on both ends of the lateral beams, and the multi-directional telescopic arms at both ends respectively drive the first clamping member to move to both sides of the first prefabricated component, stably clamp the first prefabricated component from both sides to avoid damage, and ensure the transverse docking of the first prefabricated component and the second prefabricated component, and ensure the reliability of the transverse connection between the first prefabricated component and the second prefabricated component, so as to facilitate the staff to perform transverse connection, i.e., transverse tensioning, on the first prefabricated component and the second prefabricated component, which is conducive to the smooth realization of transverse tensioning, and the overall force is uniform, avoiding the problem of stress concentration; and through the arrangement of multiple tensioning devices, the first prefabricated component and the second prefabricated component can be tensioned in the longitudinal direction at the same time, so as to ensure the effect of longitudinal tensioning and avoid damage to the underground prefabricated components.

[0028] 2) In the present invention, the sliding telescopic arm can move along the length direction of the lateral beam, so that part of the tensioning device can be placed on the side of the first prefabricated component, and part of the tensioning device can be placed on the side of the second prefabricated component, and the first prefabricated component and the second prefabricated component can be tensioned at the same time.

[0029] 3) In the present invention, a multi-directional telescopic arm is arranged at the end of the lateral beam. The arrangement of the multi-directional telescopic arm can enable the first clamping member to be moved to the side of the first prefabricated component. The multi-directional telescopic arms on both sides can ensure stable clamping of the first prefabricated component through the first clamping member, and the first prefabricated component can be moved toward the second prefabricated component by retracting the X-axis telescopic section, which is beneficial to the lateral docking of the two.

[0030] 4) The present invention can realize the rapid assembly of the first prefabricated component and the second prefabricated component through the setting of the overall structure. The first clamping member and the second clamping member are used to stably clamp the first prefabricated component and the second prefabricated component from both sides, which has high safety and prevents the underground prefabricated components from being displaced or deformed in the structure due to the soil pressure on both sides, local stress concentration and uneven stress, thereby avoiding damage to the underground prefabricated components. The Z-axis telescopic support legs can stably support the main structure, and the bottom is provided with seismic isolation pads, which can not only greatly improve the construction stability, but also further reduce the damage of the tensioning trolley to the prefabricated components during the tensioning process. The underground prefabricated components are firstly assembled horizontally as a whole, and the horizontal tensioning of the first prefabricated component and the second prefabricated component is realized by oblique bolts, which is conducive to the smooth progress of the subsequent longitudinal tensioning. Then, the underground prefabricated components are longitudinally tensioned by the tensioning device, and the tensioning trolley realizes the integration of horizontal and longitudinal tensioning. Both horizontal and longitudinal tensioning can be completed by the tensioning trolley, which greatly reduces the assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 It is a schematic diagram of a tensioning trolley for underground prefabricated components according to one or more embodiments of the present invention.

[0033] Figure 2 It is a schematic diagram of a Z-direction telescopic support leg in a tensioning trolley for underground prefabricated components according to one or more embodiments of the present invention.

[0034] Figure 3 It is a schematic diagram of a suction cup arrangement of a tensioning trolley for underground prefabricated components according to one or more embodiments of the present invention.

[0035] Figure 4 It is a schematic diagram of the transverse connection between a first prefabricated component and a second prefabricated component in a tensioning trolley for underground prefabricated components according to one or more embodiments of the present invention.

[0036] Figure 5 It is a schematic diagram of longitudinal tensioning of two adjacent first prefabricated components or two adjacent second prefabricated components by a tensioning device in a tensioning trolley for underground prefabricated components according to one or more embodiments of the present invention.

[0037] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0038] Among them: 1—L-shaped side wall block; 2—I-shaped bottom plate; 3—suction cup; 4—roller; 5—multi-directional telescopic arm; 6—lateral beam; 7—steel structure frame; 8—Z-direction telescopic support leg; 9—tensioning device; 10—sliding telescopic arm; 11—slideway; 12—X-direction telescopic rod; 13—transverse reserved hole; 14—bottom plate; 15—longitudinal tensioning hole; 16—oblique bolt; 17—fixing bolt; 18—limiting plate; 19—seismic isolation pad; 20—tensioning steel bar; 21—support plate; 22—vacuum machine; 23—disc. DETAILED DESCRIPTION

[0039] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0041] As introduced in the background technology, the assembling machine in the prior art can realize assembly but does not perform tensioning or the tensioning equipment is prone to damage the prefabricated components. In order to solve the above technical problems, the present invention proposes a tensioning trolley for underground prefabricated components.

[0042] Embodiment 1

[0043] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a tensioning trolley for underground prefabricated components comprises a main structure, the main structure has a set height, the main structure can move along the surface of the underground prefabricated components, lateral beams 6 are respectively arranged on both sides of the top of the main structure, the lateral beams 6 can perform telescopic movement in the X direction relative to the main structure, multi-directional telescopic arms 5 are respectively arranged at both ends of the lateral beam 6, the multi-directional telescopic arms 5 can perform telescopic movement in the Y direction and the Z direction, a first clamping member is arranged at the bottom of the multi-directional telescopic arm 5 to clamp the first prefabricated component from one side, a plurality of sliding telescopic arms 10 that can be telescoped in the Z direction are arranged on the lateral beam, a support plate 21 is arranged at the bottom end of some of the sliding telescopic arms 10, the support plate 21 supports the tensioning device 9 to tension two adjacent sections of the underground prefabricated components simultaneously, and a second clamping member is arranged at the bottom of some of the sliding telescopic arms to clamp the second prefabricated component from one side.

[0044] In this embodiment, the first prefabricated component is an L-shaped side wall block 1, and the second prefabricated component is an L-shaped bottom plate 2.

[0045] The main structure includes a steel structure frame 7, which is U-shaped. The length of the steel structure frame 7 is less than the length of the second prefabricated component, and the width of the steel structure frame is less than the width of the second prefabricated component. The bottom end of the steel structure frame 7 is connected to the bottom plate 14, and a roller 4 is arranged at the bottom of the bottom plate 14, and the roller 4 can move along the surface of the second prefabricated component; the roller 4 is fixed to the lower surface of the bottom plate 14, and a Z-direction telescopic support leg 8 is arranged at the bottom of the bottom plate 14. The two sides of the steel structure frame 7 are respectively connected to the bottom plate 14 to form the main structure.

[0046] refer to Figure 2 As shown, a seismic isolation pad 19 is arranged at the bottom of the Z-direction telescopic support leg 8. The seismic isolation pad can be a rubber pad. The side length of the seismic isolation pad 19 is greater than the diameter of the Z-direction telescopic support leg. Stiffening ribs can be arranged between the surface of the seismic isolation pad and the Z-direction telescopic support leg. The Z-direction telescopic support leg 8 can be an electric telescopic cylinder, a pneumatic cylinder or a hydraulic cylinder, preferably a hydraulic cylinder. The Z-direction telescopic support leg can be telescopic to adjust the height of the main structure. The height of the main structure can be adjusted by the Z-direction telescopic support leg. The Z-direction telescopic support leg cooperates with the setting of the seismic isolation pad to play an important supporting role before the lateral tensioning and longitudinal tensioning reach strength.

[0047] In this embodiment, a plurality of rollers 4 are movably provided at the bottom of the base plate 14. The rollers are symmetrically arranged at the bottom of the base plate 14, and 3 or 4 rollers are provided on one side, so that the base plate can effectively pass through the longitudinal gaps between the prefabricated components and stop the tensioning trolley in the middle position of the prefabricated base plate.

[0048] In this embodiment, the length direction of the lateral beam is consistent with the length direction of the steel structure frame, the length of the lateral beam is the same as the length of the steel structure frame, the cross-section of the lateral beam is rectangular, the lateral beam is connected to the main structure through an X-direction telescopic rod 12, and the X-direction telescopic rod 12 is arranged on both sides of the steel structure frame, and each side is respectively provided with two, so as to realize the longitudinal extension and retraction of the lateral beam relative to the main structure. The X-direction telescopic rod 12 is connected between the steel structure frame 7 and the lateral beam 6, and can be extended and retracted in the X-direction (longitudinal) direction, and the lateral beam 6 can be pushed to a suitable position. The bottom side of the lateral beam 6 is provided with a slide groove 11 along the length direction of the lateral beam 6, and a plurality of sliding telescopic arms 10 are arranged at the slide groove 11, and the sliding telescopic arms 10 can slide horizontally along the slide groove;

[0049] Specifically, a guide rod is provided at the slide groove 6, and a slider is provided at the top of the sliding telescopic arm 10, and the slider is sleeved on the guide rod, so that the sliding telescopic arm 10 can move along the guide rod at the slide groove; or, the slide groove is a T-shaped slide groove, and the slider at the top of the sliding telescopic arm 10 is T-shaped, and the T-shaped slider is inserted into the T-shaped slide groove.

[0050] It is easy to understand that the X-direction telescopic rod 12 and the sliding telescopic arm 10 can be an electric telescopic cylinder or a pneumatic cylinder or a hydraulic cylinder, which can realize telescopic movement in the Z direction, i.e., the vertical direction; three sliding telescopic arms 10 are arranged at the lateral beam 6 on one side, a second clamping member is arranged at the bottom of the middle sliding telescopic arm 10, and the bottoms of the two sliding telescopic arms 10 on the side are connected to a support plate, the support plate 21 has a set length and width, the support plate 21 and the bottom plate are arranged parallel to each other, and the surface of the support plate is respectively provided with tensioning devices 9 on both sides of the sliding telescopic arms connected thereto;

[0051] Taking into account that the underground prefabricated components are assembled in sequence, the tensioning device 9 is arranged on one side of the main structure, and the tensioning device is arranged on both sides of the second clamping member on the same side thereof. The number of sliding telescopic arms arranged on the lateral beam 6 on the other side is the same as the number of sliding telescopic arms on the side where the tensioning device is located to ensure balance. A second clamping member is arranged at the bottom end of the sliding telescopic arm in the middle of the lateral beam opposite to the tensioning device to clamp the second prefabricated component from the middle section of the second prefabricated component; by moving the sliding telescopic arm 10 relative to the lateral beam 6, part of the tensioning device is located on the side of the first prefabricated component, and part of the tensioning device is located on the side of the second prefabricated component; the tensioning device tensions the tensioning steel bar 20, one end of the tensioning steel bar 20 is fixed to the outside of an underground prefabricated component, and the tensioning steel bar 20 passes through two sections of the underground prefabricated components and is connected to the corresponding tensioning device.

[0052] Specifically, the tensioning device 9 is a tensioning device used in the prior art, which is a device used for prestressed construction, mainly used for tensioning components to establish prestress, and can achieve tensioning of the longitudinal tensioning steel bars 20 in the I-shaped bottom plate.

[0053] It can be understood that two tensioning devices 9 can be set on the support plate 21, and the two tensioning devices are set at a distance. Four tensioning devices are required for tensioning to ensure the longitudinal tensioning of the prefabricated components. The distance between the tensioning devices cannot be too large.

[0054] The two ends of the lateral beam 6 are respectively connected to the multi-directional telescopic arm 5, the multi-directional telescopic arm and the lateral beam are located in the same plane, the multi-directional telescopic arms at both ends are symmetrically arranged, the multi-directional telescopic arm can be telescoped in the Y direction and the vertical direction, a first clamping member is installed at the bottom of the multi-directional telescopic arm 5, the multi-directional telescopic arm includes a Y-direction telescopic section and a vertical telescopic section, the telescopic end of the Y-direction telescopic section is connected to the lateral beam, the fixed end of the Y-direction telescopic section is connected to the fixed end of the vertical telescopic section, and the telescopic end of the vertical telescopic section is fixed with a first clamping member; the Y-direction telescopic section and the vertical telescopic section can be electric push rods or cylinders or hydraulic cylinders.

[0055] The first clamping member and the second clamping member are both suction cups 3, and the opening side of the suction cups 3 is arranged toward the first prefabricated component or the second prefabricated component. The arrangement of the suction cups on both sides can be beneficial to the stable clamping of the first prefabricated component and the second prefabricated component.

[0056] It should be noted that the suction cup 3 can be an electric suction cup, and the opening of the suction cup is arranged toward the straight bottom plate.

[0057] refer to Figure 3 As shown, the suction cup 3 is connected to the vacuum machine 22, and a disc 23 is welded and fixed on the surface of the vacuum machine 22. The disc 23 is fixedly connected to the bottom end of the sliding telescopic arm 10 or the bottom end of the vertical telescopic section. A plurality of limit plates 18 can be arranged on the surface of the vacuum machine 22, and the limit plates are arranged along the radial direction of the disc. One end of each limit plate abuts against the annular surface of the disc, and a fixing bolt 17 is arranged on the other side. The fixing bolt 17 connects the limit plate and the surface of the vacuum machine to ensure the stable setting of the disc.

[0058] It is easy to understand that the vacuum machine, X-axis telescopic rod, Z-axis telescopic support leg, sliding telescopic arm, and multi-directional telescopic arm are respectively connected to the controller. The controller can be a PLC controller or other types of controllers. The controller can be fixed to the base plate. The sliding telescopic arm can be moved manually relative to the lateral beam 6, and the actions of other components can be controlled by the controller.

[0059] The tensioning trolley provided in the present embodiment can realize the transverse assembly and longitudinal tensioning of underground prefabricated components. Lateral beams are arranged on both sides of the main structure, and the lateral beams can be extended or retracted relative to the main structure to avoid damage such as bumps to the underground prefabricated components during the movement of the tensioning trolley. Multi-directional telescopic arms are arranged on both ends of the lateral beams, and the multi-directional telescopic arms can drive the first clamping member to move to both sides of the first prefabricated component, stably clamp the first prefabricated component from both sides to avoid damage, and ensure the transverse docking of the first prefabricated component and the second prefabricated component, and ensure the reliability of the transverse connection between the first prefabricated component and the second prefabricated component, so that it is convenient for the staff to perform transverse connection, i.e., transverse tensioning, on the first prefabricated component and the second prefabricated component, which is conducive to the smooth realization of transverse tensioning, and the overall force is uniform, avoiding the problem of stress concentration; and through the arrangement of multiple tensioning devices, the first prefabricated component and the second prefabricated component can be tensioned in the longitudinal direction at the same time, ensuring the effect of longitudinal tensioning and avoiding damage to the underground prefabricated components.

[0060] Embodiment 2

[0061] This embodiment discloses a working method of a tensioning trolley for underground prefabricated components, including the following contents:

[0062] A tensioning method for underground prefabricated components, characterized in that the tensioning trolley for underground prefabricated components described in Embodiment 1 is used, and includes the following contents:

[0063] The tensioning steel bar 20 passes through the underground prefabricated component that has been assembled, and one end of the tensioning steel bar is fixed to the outer side of the underground prefabricated component that has been assembled through an anchor such as a nut;

[0064] The main structure moves along the surface of the underground prefabricated component that has been assembled to the top of the second prefabricated component to be assembled next, and the tensioning steel bars 20 are arranged through the longitudinal tensioning holes 15 of the first prefabricated component and the second prefabricated component to be assembled;

[0065] The lateral beam 6 is extended in the X direction (longitudinal direction) relative to the main structure, so that the lateral beam moves to the outside of the second prefabricated component;

[0066] The sliding telescopic arm 10 is extended along the Z direction, so that the second clamping member moves to the side of the second prefabricated component, and the second clamping members on both sides clamp the second prefabricated component;

[0067] The multi-directional telescopic arm 5 is extended in the Y direction (lateral direction) and the Z direction (vertical direction), so that the first clamping member moves to the side of the first prefabricated component, and the first clamping members on both sides clamp the first prefabricated component;

[0068] The multi-directional telescopic arm 5 is retracted in the Y direction, so that the first prefabricated components on both sides are docked with the second prefabricated components, and the first prefabricated components and the second prefabricated components are horizontally assembled;

[0069] The sliding telescopic arm arranged at the lateral beam close to the assembled underground prefabricated component is retracted in the vertical direction, the multi-directional arms at both ends of the lateral beam are retracted, the lateral beam is retracted, the sliding telescopic arm is moved to connect the tensioning device with the corresponding tensioning steel bars, and the tensioning device works to connect the first prefabricated component and the second prefabricated component with the assembled underground prefabricated component to realize longitudinal assembly.

[0070] Among them, reference Figure 4 As shown, the L-shaped side wall block 1 and the I-shaped bottom plate 2 are respectively provided with transverse reserved holes 13 at the joints between the two, and the transverse reserved holes are inclined (part of the transverse reserved holes is located in the L-shaped side wall block or the I-shaped bottom plate, and the other part is located in the I-shaped bottom plate or the L-shaped side wall block), and the transverse reserved holes 13 of the L-shaped side wall block 1 and the I-shaped bottom plate 2 are staggered, and the oblique bolts 16 pass through the transverse reserved holes of the L-shaped side wall block 1 to the transverse reserved holes of the I-shaped bottom plate, or pass through the transverse reserved holes of the I-shaped bottom plate to the transverse reserved holes of the L-shaped side wall block 1 for installation, thereby ensuring the oblique connection of the L-shaped side wall block 1 and the I-shaped bottom plate, thereby realizing the transverse tensioning of the L-shaped side wall block 1 and the I-shaped bottom plate 2.

[0071] refer to Figure 5As shown, the longitudinal tensioning steel bar 20 passes through two I-shaped bottom panels 2, one end of the longitudinal tensioning steel bar 20 is fixed to the outside of the outer I-shaped bottom panel 2, and the longitudinal tensioning steel bar passes through the inner I-shaped bottom panel and is connected to the tensioning device 9. The longitudinal tensioning is performed by the tensioning device to realize the longitudinal assembly of two adjacent prefabricated components.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tensioning trolley for underground prefabricated components, characterized in that: The utility model comprises a main structure, which has a set height and can move along the surface of the underground prefabricated component. Lateral beams are respectively arranged on both sides of the top of the main structure, and the lateral beams can perform telescopic movement in the X direction relative to the main structure. Multi-directional telescopic arms are respectively arranged at both ends of the lateral beams, and the multi-directional telescopic arms can perform telescopic movement in the Y direction and the Z direction. A first clamping piece is arranged at the bottom of the multi-directional telescopic arm to clamp the first prefabricated component from one side. The lateral beam is provided with a plurality of sliding telescopic arms that can perform telescopic movement in the Z direction. A support plate is arranged at the bottom end of some of the sliding telescopic arms, and the support plate supports a tensioning device. The tensioning device realizes the tensioning of two adjacent sections of the underground prefabricated components by tensioning the tensioning steel bars. A second clamping piece is arranged at the bottom of some of the sliding telescopic arms to clamp the second prefabricated component from one side.

2. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The lateral beam is provided with a slide groove along the length direction of the lateral beam, that is, along the Y direction, and the top end of the sliding telescopic arm is adapted to the slide groove so that the sliding telescopic arm can move along the slide groove.

3. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The first clamping member and the second clamping member are both suction cups, and the opening side of the suction cups is arranged toward the first prefabricated component or the second prefabricated component.

4. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The lateral beam is connected to the main structure via an X-direction telescopic rod; The lateral beam has the same length as the main structure, and the multi-directional telescopic arm and the lateral beam are located in the same plane.

5. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: Part of the tensioning device is located on the side of the first prefabricated component, and part of the tensioning device is located on the side of the second prefabricated component; The tensioning device tensions the tensioning steel bar, one end of which is fixed to the outside of an underground prefabricated component, and the tensioning steel bar is connected to the tensioning device after passing through two sections of the underground prefabricated components.

6. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The tensioning device is arranged on one side of the main structure, and the tensioning device is arranged on both sides of the second clamping member.

7. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The multi-directional telescopic arm includes an X-direction telescopic section and a vertical telescopic section. The telescopic end of the X-direction telescopic section is connected to the end of the lateral beam. The X-direction telescopic section and the lateral beam are located in the same plane. The fixed end of the X-direction telescopic section is connected to the fixed end of the vertical telescopic section. The telescopic end of the vertical telescopic section fixes the first clamping member.

8. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: The main structure comprises a steel structure frame, which is U-shaped. The bottom end of the steel structure frame is connected to the bottom plate, a bottom plate is arranged on the bottom side of the bottom plate, and rollers are arranged at the bottom of the bottom plate.

9. A tensioning trolley for underground prefabricated components according to claim 1, characterized in that: A plurality of Z-direction telescopic support legs are arranged at the bottom of the main structure.

10. A tensioning method for underground prefabricated components, characterized in that: A tensioning trolley for underground prefabricated components according to any one of claims 1 to 9, comprising the following contents: The tensioned steel bars pass through the underground prefabricated components that have been assembled; The main structure moves along the surface of the underground prefabricated component that has been assembled to the top of the second prefabricated component to be assembled next, and the tensioned steel bars are arranged through the first prefabricated component and the second prefabricated component to be assembled; The lateral beam is extended in the X direction relative to the main structure, so that the lateral beam moves to the outside of the second prefabricated component; The sliding telescopic arm extends along the Z direction, so that the second clamping member moves to the side of the second prefabricated component, and the second clamping members on both sides clamp the second prefabricated component; The multi-directional telescopic arm is extended in the Y direction and the Z direction, so that the first clamping member moves to the side of the first prefabricated component, and the first clamping members on both sides clamp the first prefabricated component; The multi-directional telescopic arm is retracted in the Y direction, so that the first prefabricated component is docked with the second prefabricated component, and the first prefabricated component and the second prefabricated component are assembled horizontally; The lateral beam close to the underground prefabricated component that has been assembled is retracted, the telescopic arm with the tensioning device is extended and retracted, the tensioning device is extended and retracted to be connected with the corresponding tensioning steel bars, and the tensioning device works to connect the first prefabricated component and the second prefabricated component with the underground prefabricated component that has been assembled to achieve longitudinal assembly.

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