A high-precision adjustment device for the Bailey truss of a steel trestle bridge

Abstract

The present invention provides a high-precision regulation device for a Bailey truss of a steel trestle, which relates to the technical field of steel trestle construction. The device includes a lateral moving chassis, an inclined supporting sliding structure, and a lateral pushing structure. The lateral pushing structure and the inclined supporting sliding structure are arranged side by side on the other side of the top of the lateral moving chassis. It has a telescopic structure for pushing the Bailey truss to slide on the inclined surface of the inclined supporting sliding structure; a clamping driving mechanism is arranged on the side of the lateral moving chassis away from the Bailey truss, and it is connected to the steel beam for fixing the position of the regulation device; and it drives the regulation device to move on the steel beam. The present invention provides a regulation device that can adjust the lateral and longitudinal positions of the Bailey truss on the steel beam when the Bailey truss is erected, solving the problem of difficult movement and adjustment of the Bailey truss during the construction of the existing steel trestle.

Description

Technical Field

[0001] The present invention relates to the technical field of steel trestle construction, and particularly relates to a high-precision regulation device for a Bailey truss of a steel trestle. Background Art

[0002] A steel trestle is a bridge structure widely used in transportation construction projects and emergency rescue projects. The Bailey truss, as its core component, has the characteristics of being lightweight, standardized, easy to assemble and disassemble. However, during the erection process of the Bailey truss, the problem of inconvenient positioning and movement has become increasingly prominent, bringing many challenges and impacts to the construction.

[0003] During the erection process of the Bailey truss, it needs to be accurately moved to the designated position for installation. However, due to the weight and volume of the Bailey truss, as well as the complex construction site environment, it is often extremely difficult to move the Bailey truss. Especially on uneven or narrow sites, moving the Bailey truss requires a large amount of manpower and material resources.

[0004] The problem of inconvenient positioning and movement not only increases the construction difficulty but also seriously affects the construction progress. Construction workers need to spend more time and effort to move and position the Bailey truss, resulting in an extension of the entire project cycle. Summary of the Invention

[0005] The embodiment of the present invention provides a high-precision regulation device for a Bailey truss of a steel trestle. When erecting the Bailey truss, the regulation device can be used to realize the movement of the Bailey truss in two degrees of freedom in the transverse and longitudinal directions, solving the problem of difficult movement during the above construction process.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A high-precision regulation device for a Bailey truss of a steel trestle, comprising:

[0008] A transverse movement chassis, which is used to support the Bailey truss; and is used to move the Bailey truss along the length direction of the steel beam;

[0009] An inclined support sliding structure, arranged on the top of the transverse movement chassis close to the Bailey truss. One side close to the Bailey truss is provided with an inclined surface, and the Bailey truss contacts the inclined surface. The inclined support sliding structure is used to move the Bailey truss along the width direction of the steel beam; and to slide the Bailey truss to the top of the steel beam;

[0010] A lateral pushing structure, arranged side by side with the inclined support sliding structure on the other side of the top of the transverse movement chassis. It has a telescopic structure and is used to push the Bailey truss to slide on the inclined surface of the inclined support sliding structure;

[0011] The clamping drive mechanism is arranged on the side of the transverse moving chassis far away from the Bailey truss, and is connected to the steel beam, used to fix the position of the regulation device; and drive the regulation device to move on the steel beam.

[0012] In order to better implement the technical solution of the present invention, the following technical measures are also adopted.

[0013] Further, the transverse moving chassis includes a base. At the position where the base contacts the top of the steel beam, rollers are provided, and at the position where it contacts the edge of the steel beam, lateral pulleys are provided.

[0014] Further, the inclined support sliding structure includes an inclined frame connected to the base. On the inclined surface of the inclined frame, there are several rollers. The rotation direction of the rollers is perpendicular to the rotation direction of the rollers. At the gap between the rollers on the inclined surface, a comb tooth groove is provided, and a comb tooth push plate is provided inside it. A first telescopic cylinder is connected between the comb tooth push plate far away from the inclined surface and the inclined frame, used to drive the comb tooth push plate to extend or retract from the comb tooth groove.

[0015] Further, the lateral pushing structure includes a mounting seat connected to the base. At least two second telescopic cylinders are provided on the top of the mounting seat. Among them, the output end of the second telescopic cylinder faces the Bailey truss.

[0016] Further, a reinforcing rib is provided on the side of the second telescopic cylinder far away from the Bailey truss. One end of the reinforcing rib is connected to the second telescopic cylinder, and the other end is connected to the base together.

[0017] Further, the clamping drive mechanism includes a connecting seat. The connecting seat is connected to the edge in the width direction of the base. On the side of the connecting seat close to the steel beam, two clamping arms are hinged. Among them, long holes are provided on the clamping arms. At the end of the clamping arm, a roller and a first driving motor are provided. The output shaft of the first driving motor is connected to the axis of the roller, used to drive its rotation. It also includes a threaded sleeve and a slider. One end of the threaded sleeve is hinged to one of the clamping arms. The slider is arranged in the long hole of the other clamping arm. The long hole restricts the moving direction of the slider. The slider slides along the length direction of the clamping arm. A second driving motor is provided on the top of the slider. A lead screw is provided on the output shaft of the second driving motor. The lead screw passes through the slider and is threadedly connected to the threaded sleeve.

[0018] Further, the roller is made of steel and has tooth grooves on its surface.

[0019] Further, two clamping drive mechanisms are provided, distributed on both sides of the base.

[0020] Compared with the prior art, the beneficial effect of the present invention is that when erecting the steel trestle bridge, the regulation device can be used to realize the movement of the Bailey truss in two degrees of freedom in the transverse and longitudinal directions, which is convenient for the construction of the steel trestle bridge and effectively reduces the erection difficulty of the Bailey truss.

[0021] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the erection of a Bailey truss for a regulation device disclosed in an embodiment of the present invention;

[0023] Figure 2 It is the first erection state of the regulation device disclosed in an embodiment of the present invention;

[0024] Figure 3 It is the second erection state of the regulation device disclosed in an embodiment of the present invention (the first telescopic cylinder and the second telescopic cylinder are extended);

[0025] Figure 4 It is the second erection state of the regulation device disclosed in an embodiment of the present invention (the second telescopic cylinder continues to extend);

[0026] Figure 5 It is a schematic structural diagram of the regulation device installed on a steel beam disclosed in an embodiment of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the regulation device from the first perspective disclosed in an embodiment of the present invention;

[0028] Figure 7 It is Figure 6 The enlarged structural diagram at position A in

[0029] Figure 8 It is a schematic structural diagram of the regulation device from the second perspective disclosed in an embodiment of the present invention;

[0030] Figure 9 It is a schematic structural diagram of the regulation device from the third perspective disclosed in an embodiment of the present invention;

[0031] Figure 10 It is a schematic structural diagram of the regulation device from the fourth perspective disclosed in an embodiment of the present invention.

[0032] Reference numerals: 1, Bailey truss; 2, steel beam; 3, main body of the regulating device; 31, transverse moving chassis; 31a, base; 31b, roller; 31c, lateral pulley; 32, inclined supporting sliding structure; 32a, inclined frame; 32b, inclined surface; 32c, comb tooth groove; 32d, roller; 32e, comb tooth push plate; 32f, first telescopic cylinder; 33, lateral pushing structure; 33a, mounting seat; 33b, second telescopic cylinder; 33c, reinforcing rib; 34, clamping driving mechanism; 34a, connecting seat; 34b, clamping arm; 34c, long hole; 34d, roller; 34e, first driving motor; 34f, threaded sleeve; 34g, slider; 34h, second driving motor. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Figure 1 and Figure 5 FIG. shows a schematic structural diagram of the regulating device for erecting the Bailey truss 1. During the process of using this regulating device to erect the Bailey truss 1, at least two such regulating devices are required on one steel beam 2 to support and adjust the position of the Bailey truss 1.

[0035] Among them, the number of regulating devices is set according to the number of erection points of the Bailey truss 1 on the steel beam 2. Specifically, one erection point on the Bailey truss 1 corresponds to two regulating devices. For example, when there is one erection point on one steel beam 2, two regulating devices are used to support both sides of the erection point of the Bailey truss 1.

[0036] During the process of the regulating device erecting the Bailey truss 1, the actions of the two regulating devices are mirror-synchronized.

[0037] As Figures 2 - 4 shown, it shows three states of the regulating device erecting the Bailey truss 1.

[0038] The first state, as Figure 2 shown, at this time, the Bailey truss 1 is placed on the regulating device. At this time, in the case where the clamping driving mechanism 34 is not started, the regulating device is in a state of being fixed in the transverse position. At this time, the Bailey truss 1 can only be moved longitudinally. After the clamping driving mechanism 34 is started, the Bailey truss 1 can be moved transversely.

[0039] Among them, as Figures 6 - 10As shown in the figure, the clamping drive mechanism 34 includes a connecting seat 34a which is connected to the edge in the width direction of the base 31a. On one side of the connecting seat 34a close to the steel beam 2, two clamping arms 34b are hinged. Among them, a long hole 34c is formed on the clamping arm 34b. At the end section of the clamping arm 34b, a roller 34d and a first driving motor 34e are provided. The output shaft of the first driving motor 34e is connected to the axis of the roller 34d for driving it to rotate. It also includes a threaded sleeve 34f and a slider 34g. One end of the threaded sleeve 34f is hinged to one of the clamping arms 34b. The slider 34g is arranged in the long hole 34c of the other clamping arm 34b. The long hole 34c restricts the moving direction of the slider 34g, and the slider 34g slides along the length direction of this clamping arm 34b. At the top of the slider 34g, a second driving motor 34h is provided. The output shaft of the second driving motor 34h is provided with a lead screw which penetrates through the slider 34g and is threadedly connected to the threaded sleeve 34f.

[0040] There are two clamping drive mechanisms 34 which are distributed on both sides of the base 31a. The roller 34d is made of steel and has tooth grooves on its surface.

[0041] When in the fixed state of the horizontal position, the first driving motor 34e is in the stopped state. The second driving motor 34h drives the lead screw to rotate and engage with the threaded sleeve 34f, driving the two clamping arms 34b to close together to bite the roller 34d on the steel beam 2, thereby fixing the horizontal position of the regulating device.

[0042] When horizontal movement is required, the first driving motor 34e is started and the second driving motor 34h is kept on. The first driving motor 34e drives the roller 34d to move along the length direction of the steel beam 2, realizing the adjustment of the horizontal position of the regulating device to adjust the position of the Bailey bridge 1 in the horizontal direction.

[0043] The first driving motor 34e and the second driving motor 34h adopt reduction motors.

[0044] The second state, as Figure 3 shown in the figure. At this time, the Bailey bridge 1 is placed on the regulating device. At this time, in the case where the clamping drive mechanism 34 is not started, the regulating device is in the state of fixed horizontal position.

[0045] Such as Figures 6 - 10As shown, the inclined supporting sliding structure 32 includes an inclined frame 32a connected to the base 31a, and a plurality of rollers 32d are provided on the inclined surface 32b of the inclined frame 32a. The direction of rotation of the rollers 32d is arranged in the same direction as that of the roller 31b. Comb tooth grooves 32c are provided in the gaps between the rollers 32d on the inclined surface 32b, and a comb tooth push plate 32e is provided inside the comb tooth push plate 32e. A first telescopic cylinder 32f is connected between the comb tooth push plate 32e away from the inclined surface 32b and the inclined frame 32a, so as to drive the comb tooth push plate 32e to extend or retract from the comb tooth groove 32c.

[0046] The lateral pushing structure 33 includes a mounting seat 33 a connected to the base 31 a , and at least two second telescopic cylinders 33 b are arranged on the top of the mounting seat 33 a , wherein the output ends of the second telescopic cylinders 33 b face the Bailey frame 1 .

[0047] In this state, the first telescopic cylinder 32f extends to push the comb tooth push plate 32e to move along the comb tooth groove 32c, lifting the Bailey frame 1 and separating it from the roller 32d. At this time, the Bailey frame 1 cannot move longitudinally. At the same time, the second telescopic cylinder 33b extends and contacts the Bailey frame 1.

[0048] In order to support the second telescopic cylinder 33b and improve the structural strength of the lateral pushing structure 33, a reinforcing rib 33c is provided on the side of the second telescopic cylinder 33b away from the Bailey frame 1, one end of the reinforcing rib 33c is connected to the second telescopic cylinder 33b, and the other end is connected to the base 31a.

[0049] The third state, such as Figure 4 As shown, at this time, based on the second state, the second telescopic cylinder 33b continues to extend to push the Bailey frame 1.

[0050] When the second telescopic cylinder 33b continues to extend, the clamping drive mechanism 34 drives the regulating device to move away from the Bailey frame 1. The effect of this operation is to separate the regulating device from the Bailey frame 1, so that the Bailey frame 1 falls to the adjusted position.

[0051] Specifically, start the first drive motor 34e and keep the second drive motor 34h turned on. The first drive motor 34e drives the roller 34d to rotate, and the roller 34d drives the regulating device on the steel beam 2 to move away from the Bailey frame 1 along its length direction. At this time, the Bailey frame 1 is in a relatively static state, and the regulating devices placed on both sides of its installation point move in a direction away from the Bailey frame 1. The surface of the comb push plate 32e and the inclined surface 32b of the inclined frame 32a slide relative to the Bailey frame 1 under the push of the second telescopic cylinder 33b until the regulating device is completely separated from the Bailey frame 1. At this time, the installation of the Bailey frame 1 is completed.

[0052] like Figure 10As shown in the figure, the horizontally movable chassis 31 includes a base 31a, on which a roller 31b is provided at the position where it contacts the top of the steel beam 2, and a lateral pulley 31c is provided at the position where it contacts the edge of the steel beam 2.

[0053] The use process of this regulation device includes the following steps:

[0054] Before erecting the Bailey truss 1, after placing the regulation device body 3 on the steel beam 2, use the roller 31b and the lateral pulley 31c to move the position of the regulation device body 3 on the steel beam 2;

[0055] After adjusting the distance between the two regulation device bodies 3 according to the size of the erection point of the Bailey truss 1, fix the position by using the clamping drive mechanism 34, and adjust the position of the regulation device body 3 on all the steel beams 2;

[0056] Use the hoisting equipment to place the Bailey truss 1 on the regulation device. At this time, both sides of the erection point of the Bailey truss 1 are in contact with the rollers 32d of the inclined support sliding structure 32;

[0057] Use the rollers 32d to adjust the longitudinal position of the Bailey truss 1;

[0058] After the adjustment is completed, start the first telescopic cylinder 32f, extend the comb-tooth push plate 32e to separate the Bailey truss 1 from the rollers 32d. At this time, the Bailey truss 1 cannot be adjusted longitudinally;

[0059] Turn on the first drive motor 34e, keep the second drive motor 34h, and drive the rollers 34d to adjust the lateral position of the Bailey truss 1;

[0060] After the adjustment is completed, turn on the second telescopic cylinder 33b, and at the same time, the first drive motor 34e runs in the reverse direction, the rollers 34d run in the reverse direction, and drive the regulation device body 3 to separate from the Bailey truss 1;

[0061] At this time, the Bailey truss 1 is in a static state in the lateral position. During the process of driving the regulation device body 3 to separate from the Bailey truss 1, the Bailey truss 1 slowly approaches the steel beam 2. After the regulation device body 3 is completely separated from the Bailey truss 1, the Bailey truss 1 falls to the top of the steel beam 2. At this time, the adjustment of the position of the Bailey truss 1 is completed.

[0062] The high-precision regulation device for the Bailey truss 1 of the steel trestle bridge proposed by the present invention can realize the movement of the Bailey truss 1 in two degrees of freedom, namely, horizontally and longitudinally, by using the regulation device when erecting the steel trestle bridge, which is convenient for the construction of the steel trestle bridge and effectively reduces the erection difficulty of the Bailey truss 1. On the other hand, it can automatically separate from the Bailey truss 1 after the position adjustment is completed, and keep the position of the Bailey truss 1 unchanged during the separation process, effectively ensuring the installation accuracy of the Bailey truss 1 while improving the convenience of use.

[0063] It should be noted that the specific model specifications of the first telescopic cylinder 32f, the second telescopic cylinder 33b, the first drive motor 34e and the second drive motor 34h need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail.

[0064] The power supply and its principle of the first telescopic cylinder 32f, the second telescopic cylinder 33b, the first drive motor 34e and the second drive motor 34h are clear to those skilled in the art and will not be described in detail here.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A high-precision control device for Bailey frame of steel trestle, characterized in that: include: A transversely movable chassis (31) for supporting the Bailey frame (1); and for moving the Bailey frame (1) along the length direction of the steel beam (2); The transversely movable chassis (31) comprises a base (31a), a roller (31b) is provided at a position where the base (31a) contacts the top of the steel beam (2), and a lateral pulley (31c) is provided at a position where the base (31a) contacts the edge of the steel beam (2); An inclined supporting sliding structure (32) is arranged on the top of the transversely movable chassis (31) on a side close to the Bailey frame (1), and an inclined surface (32b) is provided on the side close to the Bailey frame (1). The Bailey frame (1) contacts the inclined surface (32b). The inclined supporting sliding structure (32) is used to move the Bailey frame (1) along the width direction of the steel beam (2); and to slide the Bailey frame (1) to the top of the steel beam (2); The inclined support sliding structure (32) comprises an inclined frame (32a) connected to a base (31a); a plurality of rollers (32d) are provided on an inclined surface (32b) of the inclined frame (32a); the rotation direction of the rollers (32d) is aligned with the rotation direction of the roller shaft (31b); comb tooth grooves (32c) are provided at gaps between the rollers (32d) on the inclined surface (32b); a comb tooth push plate (32e) is provided inside the comb tooth push plate (32e); a first telescopic cylinder (32f) is connected between the comb tooth push plate (32e) away from the inclined surface (32b) and the inclined frame (32a) to drive the comb tooth push plate (32e) to extend or retract from the comb tooth groove (32c); A lateral pushing structure (33) is arranged side by side with the inclined supporting sliding structure (32) on the other side of the top of the transversely movable chassis (31), and has a telescopic structure for pushing the Bailey frame (1) to slide on the inclined surface (32b) of the inclined supporting sliding structure (32); The lateral pushing structure (33) comprises a mounting seat (33a) connected to the base (31a), and at least two second telescopic cylinders (33b) are arranged on the top of the mounting seat (33a), wherein the output ends of the second telescopic cylinders (33b) face the Bailey frame (1); A reinforcing rib (33c) is provided on one side of the second telescopic cylinder (33b) away from the Bailey frame (1); one end of the reinforcing rib (33c) is connected to the second telescopic cylinder (33b), and the other end is connected to the base (31a); The clamping drive mechanism (34) is arranged on a side of the transverse movable chassis (31) away from the Bailey frame (1), and is connected to the steel beam (2) to fix the position of the regulating device; and drives the regulating device to move on the steel beam (2).

2. The control device according to claim 1, characterized in that: The clamping drive mechanism (34) comprises a connecting seat (34a), the connecting seat (34a) being connected to the edge of the base (31a) in the width direction, two clamping arms (34b) being hingedly connected to one side of the connecting seat (34a) close to the steel beam (2), wherein a long hole (34c) is provided on the clamping arm (34b), a roller (34d) and a first drive motor (34e) are provided at the end of the clamping arm (34b), the output shaft of the first drive motor (34e) being connected to the axis of the roller (34d) for driving the roller to rotate, and a threaded sleeve (34) is also included. f) and a slider (34g), one end of the threaded sleeve (34f) is hinged to one of the clamping arms (34b), the slider (34g) is arranged in a long hole (34c) of the other clamping arm (34b), the long hole (34c) limits the moving direction of the slider (34g), the slider (34g) slides along the length direction of the clamping arm (34b), a second drive motor (34h) is arranged on the top of the slider (34g), the output shaft of the second drive motor (34h) is provided with a screw rod, the screw rod passes through the slider (34g) and is threadedly connected to the threaded sleeve (34f).

3. The control device according to claim 2, characterized in that: The roller (34d) is made of steel and has tooth grooves on its surface.

4. The control device according to claim 2, characterized in that: Two clamping drive mechanisms (34) are provided and distributed on both sides of the base (31a).

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