Bridge swivel construction traction system

Abstract

The utility model relates to a bridge swivel construction traction system, and belongs to the technical field of bridge swivel construction. The bridge swivel construction traction system comprises a swivel mechanism, a traction mechanism, a stroke monitoring mechanism and an arc length monitoring mechanism, the swivel mechanism comprises a lower capstan and an upper capstan, the traction mechanism comprises traction equipment and a steel strand, and the stroke monitoring mechanism is used for detecting the stroke variation and elongation of the steel strand; the arc length monitoring mechanism is used for detecting the rotating arc length before and after the cantilever end point of the rotating body structure moves so as to obtain the function relation between the stroke variable quantity and the rotating arc length. According to the bridge swivel construction traction system provided by the utility model, the next inching data in swivel construction can be planned according to the stroke variation and elongation of the steel strand and the rotating arc length before and after the cantilever end inching, so that the stroke inching traction construction is realized, the stroke inching traction control mode is more accurate, the swivel process operation is more standard, and the construction efficiency is improved. And the swivel structure is more accurate in position, and has great application and popularization values.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge rotation construction technical field, concretely relates to a bridge rotation construction traction system. BACKGROUND

[0002] Bridge rotation construction refers to a construction method that a bridge structure or main components thereof are cast or assembled in a non-design axis position and then positioned by rotation. According to the rotation direction of the bridge structure, it can be divided into vertical rotation construction method, horizontal rotation construction method and the method combining horizontal rotation and vertical rotation, among which the horizontal rotation method is most commonly used.

[0003] The rotation traction mode has developed from discontinuous traction to continuous traction and from non-synchronous traction to synchronous traction. At present, in the traditional traction system of bridge rotation, there are mainly two kinds according to the different power systems: one is synchronous hydraulic jack traction system, mainly suitable for large-tonnage bridge rotation construction, which realizes continuous, synchronous and remote control by using various controllers or control modules through computer and network technology; the other is manual single-point synchronous traction system, suitable for small-tonnage bridge rotation. The synchronous hydraulic jack traction system is divided into continuous traction and point traction two states in the process of large-tonnage bridge rotation. When the bridge rotation process enters the final rotation positioning stage, the synchronous hydraulic jack traction system enters the point traction state, and the time point traction control mode is adopted at present.

[0004] However, the time point traction control mode of the bridge rotation traction equipment has the following problems: 1. The traction steel strand has an elongation and tightening process before traction starts, which will cause traction lag; 2. The traction time is controlled by the operator according to the time on the timing device, and different people have different reaction times, and the same person cannot keep the same operation action every time. Further, the time point traction control of the bridge rotation traction equipment is not accurate enough, which will affect the accuracy of the bridge rotation positioning. UTILITY MODEL CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a bridge rotation construction traction system, which has more accurate stroke point traction control mode, more standardized rotation process operation, more accurate rotation structure positioning and great application and promotion value.

[0006] The technical scheme of the utility model is as follows:

[0007] The utility model provides a kind of bridge swivel construction traction system, for the stroke point motion construction of bridge structure, comprising: swivel mechanism, including the lower hinge disc for being connected with the base of bridge structure and the upper hinge disc for being connected with the swivel structure of bridge structure, the upper hinge disc and the lower hinge disc are spherical surface rotation cooperation;Traction mechanism, including traction equipment and steel strand, two ends of the steel strand are connected with the swivel structure and the traction mechanism respectively, the traction equipment can be pulled the upper hinge disc relative to the lower hinge disc point motion by the steel strand, to make swivel structure rotate;Stroke monitoring mechanism, for detecting the stroke change amount and elongation of the steel strand;Arc length monitoring mechanism, for detecting the rotation arc length before and after cantilever endpoint motion of swivel structure, to obtain the functional relationship between the stroke change amount and the rotation arc length.

[0008] As an optional solution, a plurality of monitoring parts are provided on the steel strand, and the stroke monitoring mechanism is configured to detect the stroke change amount of the monitoring parts and the elongation between two adjacent monitoring parts.

[0009] As an optional solution, the swivel mechanism further includes a ring channel and a plurality of hydraulic supports, the ring channel is annular and located around the lower hinge disc, and the hydraulic supports are fixed around the upper hinge disc, and the hydraulic supports are in contact with and slidingly fitted with the ring channel.

[0010] As an optional solution, the hydraulic support includes a first embedded part, a steel basin, a hollow rubber plate and a piston support, the first embedded part is embedded in the swivel structure, the steel basin is detachably connected with the embedded part, the hollow rubber plate is arranged in the steel basin, and the piston support is arranged in the steel basin in a liftable manner, the top end of the piston support is in abutment with the hollow rubber plate, and the bottom end of the piston support is in abutment with the ring channel, the hollow rubber plate is connected with a hydraulic subsystem and a force measuring subsystem, the hydraulic subsystem lifts and lowers the piston support, and the force measuring subsystem detects the pressure of the hollow rubber plate.

[0011] As an optional solution, the steel basin has a first opening, and the hydraulic subsystem includes an oil pump, a stop valve, a one-way valve, an overflow valve and a connecting head connected in sequence, the connecting head is arranged in the first opening and in communication with the hollow rubber plate.

[0012] As an optional solution, the steel basin has a second opening, and the force measuring subsystem includes a pressure sensor, the pressure sensor is arranged in the second opening, and the contact head of the pressure sensor is in abutment with the hollow rubber.

[0013] As an optional solution, the hydraulic support further includes a second embedded part, the second embedded part is embedded on the base, the ring channel is spliced by a plurality of arc-shaped sliding plates, and the sliding plates are detachably connected with the second embedded part.

[0014] As an option, the hydraulic support further comprises a plurality of hydraulic legs, the bottom of the hydraulic legs is provided with a rolling wheel, the bottom end of the piston support is provided with a plurality of auxiliary blind holes, and the hydraulic legs are telescopically arranged in the auxiliary blind holes.

[0015] As an option, the arc length monitoring mechanism comprises a horizontal tilt angle instrument and a wire displacement meter.

[0016] As an option, the stroke monitoring mechanism comprises a displacement sensor.

[0017] The bridge body rotation construction traction system has the advantages that:

[0018] The bridge body rotation construction traction system has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor. Through the drawings shown, the above and other purposes, features and advantages of the present application will be more clear. In all the drawings, the same reference signs indicate the same parts. The drawings are not necessarily drawn in proportion to the actual size, and the focus is on showing the main points of the present application.

[0020] Figure 1 The bridge body rotation construction traction system provided by the embodiment of the present application and the cooperation relationship diagram of the bridge structure are shown in the figure.

[0021] Figure 2 The structure diagram of the body rotation mechanism of the bridge body rotation construction traction system provided by the embodiment of the present application is shown in the figure.

[0022] Figure 3 The body rotation construction principle diagram of the bridge body rotation construction traction system provided by the embodiment of the present application is shown in the figure.

[0023] Figure 4 The cooperation relationship diagram of the hydraulic support and the ring track in the hydraulic support and the ring track is shown in the figure. Figure 2

[0024] ​Icon: 100 - base; 101 - swivel structure; 110 - lower hinge disc; 111 - upper hinge disc; 112 - ring channel; 113 - hydraulic support; 114 - first embedded part; 115 - steel basin; 116 - hollow rubber plate; 117 - piston support; 118 - hydraulic support leg; 130 - traction device; 131 - steel strand; 140 - stroke monitoring mechanism. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In addition, the terms "first", "second", and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0029] Please refer to Figure 1 The embodiments of the present application provide a bridge swivel construction traction system, which can perform bridge swivel construction and is used for forming point operation. It should be noted that the bridge swivel construction traction system provided in the embodiments is mainly a mechanical system, which can be controlled by manual detection or a software control system.

[0030] The bridge structure is mainly composed of a base 100 and a swivel structure 101, wherein the base 100 is fixed to the ground by the way of reinforced concrete pouring, and the swivel structure 101 is located above the base 100.

[0031] The bridge swivel construction traction system is mainly composed of a swivel mechanism, a traction mechanism, a stroke monitoring mechanism 140 and an arc length monitoring mechanism (not shown in the figure).

[0032] The base 100 is connected with the rotating body structure 101 through a bridge rotating body mechanism, the rotating body structure 101 can rotate relative to the base 100, that is, the orientation of the bridge part at the top end of the rotating body structure 101 can be changed, so as to realize the rotating body construction of the bridge structure.

[0033] The rotating body mechanism is mainly used for enabling the rotating body structure 101 to rotate relative to the base 100, so as to change the orientation of the rotating body structure 101. The structure of the rotating body mechanism is not limited, and can refer to the prior art. In the embodiment, please refer to the rotating body mechanism shown in the figure. Figure 2 The rotating body mechanism includes a central spherical hinge mechanism, wherein the central spherical hinge mechanism includes a lower hinge disc 110, an upper hinge disc 111 and a central shaft, the lower hinge disc 110 is fixed on the base 100, the top surface of the lower hinge disc 110 is concave in a spherical shape downward, the upper hinge disc 111 is fixed at the bottom end of the rotating body structure 101, the bottom surface of the upper hinge disc 111 is protruding in a spherical shape downward, the lower hinge disc 110 and the upper hinge disc 111 cooperate with each other, the central shaft is arranged vertically and cooperates with the lower hinge disc 110 and the upper hinge disc 111 respectively, the upper hinge disc 111 can rotate relative to the lower hinge disc 110 around the central shaft, so as to enable the rotating body structure 101 to rotate in the horizontal plane relative to the base 100.

[0034] The traction mechanism is mainly used for pulling the rotating body structure 101 to rotate, and provides power for the rotation of the rotating body structure 101. The structure of the traction mechanism is not limited, and can refer to the prior art. In the embodiment, the traction mechanism includes a traction device 130 and a steel strand 131. The traction device 130 can adopt various styles such as motor, hydraulic system, etc., the two ends of the steel strand 131 are connected with the traction mechanism and the rotating body structure 101 respectively, the length, model, etc. of the steel strand 131 can be set according to the needs, and the traction device 130 can pull the steel strand 131 to move when working, so as to pull the upper hinge disc 111 to move relative to the lower hinge disc 110, so as to rotate the rotating body structure 101.

[0035] The number of the traction mechanism is not limited, and can be one, two, etc. In the embodiment, the number of the traction mechanism is two, and the two traction mechanisms are arranged in rotational symmetry around the base 100.

[0036] The stroke monitoring mechanism 140 is mainly used to detect the stroke change amount and the elongation amount of the steel strand 131, thereby providing a reference and basis for subsequent control. The stroke monitoring mechanism 140 is not limited in style and can refer to the prior art. In this embodiment, the stroke monitoring mechanism 140 can adopt a displacement sensor or the like. In addition, a plurality of monitoring parts can be arranged on the steel strand 131. When the steel strand 131 is pulled by the traction device 130, the positions of the monitoring parts on the steel strand 131 change, and the stroke monitoring mechanism 140 is used to detect the stroke change amount of the monitoring parts and the elongation amount between two adjacent monitoring parts. Of course, in other embodiments, the monitoring manner of the stroke monitoring mechanism 140 can also be other styles, for example, a monitoring element is arranged at the traction device 130, and the monitoring element can monitor the stroke change amount of the steel strand 131.

[0037] The arc length monitoring mechanism is mainly used to detect the rotation arc length before and after the cantilever end point of the rotating body structure 101, so as to obtain the functional relationship between the stroke change amount and the rotation arc length. The functional relationship can be calculated by software or manually. The arc length monitoring mechanism includes a horizontal tilt angle instrument and a wire displacement meter. The structure and principle of the horizontal tilt angle instrument can refer to the prior art. The horizontal tilt angle instrument is installed on the rotating body structure 101 and can detect the rotation angle of the rotating body structure 101. The wire displacement meter can detect the rotation radius of the cantilever end of the rotating body structure 101. The cantilever end refers to one end of the top end of the rotating body structure 101. For example, please refer to FIG. 1B. The rotating body structure 101 needs to rotate by an angle of ∠A, the cantilever end radius is r, the total rotation arc length is L=(∠A / 360°)*2πr, the rotation angle before and after a certain point is ∠B, the rotation arc length before and after the point is l=(∠B / ∠A)*L, and the remaining arc length is L-the sum of the rotation arc lengths of multiple points. At this time, the stroke length of the steel strand 131 is d. Figure 3

[0038] Generally, the functional relationship between the stroke change amount and the rotation arc length can be calculated to obtain the stroke predetermined amount data of the steel strand 131 in the next point driving. Then, the traction mechanism is controlled by manual or software control. The traction device 130 keeps a certain traction force until the stroke of the steel strand 131 reaches the predetermined amount, and then the point driving is stopped immediately. Through the cumulative iteration operation, the rotating body is accurately positioned.

[0039] Compared with the traditional time point driving control mode, the traction force lag problem caused by the elongation and tensioning of the steel strand 131 can be avoided, and the point driving control of the bridge rotating body can be more accurate. Of course, in order to make the operation more accurate, the software control system can be used for monitoring and control.

[0040] The stroke point driving control method of the bridge rotating body construction traction system provided in this embodiment includes two steps, i.e., a rotating body test point driving traction step and a formal rotating body step. ​

[0041] The rotation test point driving step is as follows: after the rotation structure 101 starts to rotate, the predetermined rotation driving force is kept by the driving mechanism to drive, and the stroke change amount of the steel strand 131 is monitored in real time by the stroke monitoring mechanism 140; when the stroke change amount of the steel strand 131 reaches a predetermined value, the driving mechanism is stopped in time to end the driving; when the rotation structure 101 returns to the static state, the rotation arc length of the cantilever end of the rotation structure 101 before and after the driving is measured by the arc length monitoring mechanism; the function relationship between the stroke change amount of the steel strand 131 and the rotation arc length of the cantilever end is calculated through multiple point driving, which can be calculated by software or manually.

[0042] The formal rotation step is as follows: the rotation arc length of the cantilever end of the rotation structure 101 before and after the point driving is monitored by the arc length monitoring mechanism, and the remaining arc length from the in-place position of the rotation structure 101 is calculated; the stroke predetermined amount of the steel strand 131 is selected according to the function relationship among the remaining arc length, the stroke change amount of the steel strand 131 and the rotation arc length of the cantilever end; the predetermined rotation driving force is kept by the driving mechanism to drive, and when the stroke amount of the steel strand 131 measured by the stroke monitoring mechanism 140 reaches the preset value, the driving mechanism is stopped in time to end the driving; after the rotation structure 101 returns to the static state, the remaining arc length is measured and calculated by the arc length monitoring mechanism, and the above steps are repeated until the rotation structure 101 is in place.

[0043] The above steps can be increased, reduced, modified, and the order adjusted as needed.

[0044] In addition, in some embodiments, the rotation mechanism can also be improved. Specifically, the bridge rotation construction driving system provided in the embodiment is mainly applied to large-tonnage bridge rotation construction, and when the tonnage of the bridge is large, the size of the rotation mechanism is large, production and processing are difficult, transportation is inconvenient, and installation is time-consuming and laborious. In the embodiment, the following solutions can be used but are not limited to: Figure 2 Figure 4 As shown in FIGS. 1, 2 and 3, the rotation mechanism further comprises a component force mechanism, which mainly comprises a ring channel 112 and a plurality of hydraulic supports 113. The number of the hydraulic supports 113 can be set as needed, for example, six, eight, twelve, etc.

[0045] The ring channel 112 is circular, is fixed on the base 100 and located around the lower hinge disc 110, and the style of the ring channel 112 is not limited and can be integrally formed or spliced by a plurality of arc-shaped sliding plates. The sliding plates can be made of stainless steel plates and the like. The hydraulic support 113 further comprises a second embedded part embedded in the base 100, and the sliding plate is detachably connected with the second embedded part.

[0046] ​The hydraulic support 113 is fixed around the upper hinge disc 111 and in contact with and slidingly fitted to the ring channel 112. The hydraulic support 113 can share part of the weight of the rotating body structure 101, and the position of the hydraulic support 113 can be relatively outward, and the force effect is better.

[0047] The structure of the hydraulic support 113 is not limited, and in the embodiment, the following schemes can be used but are not limited to: the hydraulic support 113 includes a first embedded part 114, a steel basin 115, a hollow rubber plate 116, and a piston support 117. The first embedded part 114 is embedded in the rotating body structure 101. The steel basin 115 is detachably connected with the embedded part, and the detachable connection manner is not limited, for example, through threaded fasteners, etc. The hollow rubber plate 116 is arranged in the steel basin 115. The piston support 117 is arranged in the steel basin 115 in a liftable manner. The top end of the piston support 117 abuts against the hollow rubber plate 116, and the bottom end abuts against the ring channel 112.

[0048] The hollow rubber plate 116 is connected with a hydraulic subsystem and a force measuring subsystem. The hydraulic subsystem lifts and lowers the piston support 117. The force measuring subsystem is used to detect the pressure of the hollow rubber plate 116.

[0049] The structure of the hydraulic subsystem is not limited, for example, the hydraulic subsystem can include an oil pump, a stop valve, a one-way valve, an overflow valve, and a connector in sequence. The steel basin 115 has a first opening. The connector is arranged in the first opening and in communication with the hollow rubber plate 116. The hydraulic subsystem can inject hydraulic oil into the hollow rubber plate 116, so as to expand the hollow rubber plate 116, and push the piston support 117 out downward, or extract the hydraulic oil in the hollow rubber plate 116, so as to shrink the hollow rubber plate 116.

[0050] The structure of the force measuring subsystem is not limited, for example, the force measuring subsystem includes a pressure sensor. The steel basin 115 has a second opening. The pressure sensor is arranged in the second opening. A contact head of the pressure sensor abuts against the hollow rubber plate 116.

[0051] In addition, in order to reduce the cost, the hydraulic support 113 can be recycled. As known, between the bridge base 100 and the rotating body structure 101, the space is narrow, and it is difficult to use machinery to move the hydraulic support 113, etc. Only manual or small auxiliary equipment can be used, which is time-consuming and laborious. The hydraulic support 113 further includes a plurality of hydraulic legs 118. The bottom of the hydraulic leg 118 is provided with a roller. The bottom end of the piston support 117 is provided with a plurality of auxiliary blind holes. The hydraulic leg 118 is arranged in the auxiliary blind hole in an extendable and retractable manner.

[0052] The hydraulic outrigger 118 is telescopic and has a retracted state and a walking state: when the hydraulic outrigger 118 is in the retracted state, the bottom end of the roller is completely located in the auxiliary blind hole, the bottom end of the roller is higher than the bottom end of the piston support 117, and the roller does not affect the normal work of the piston support 117 at all; when the hydraulic outrigger 118 is in the walking state, the roller extends downward from the auxiliary blind hole, the bottom end of the roller is lower than the bottom end of the piston support 117, the roller is in rolling contact with the ground or the ring track 112, and the construction personnel can pull the hydraulic support 113 to move the hydraulic support 113 in the narrow space below the swing structure 101, so that the operation is simple and labor-saving.

[0053] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the technical personnel in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bridge rotation construction traction system, used for performing stroke inching construction on bridge structures, characterized in that: include: The swivel mechanism comprises a lower hinge plate for connecting to a base of the bridge structure and an upper hinge plate for connecting to a swivel structure of the bridge structure, wherein the upper hinge plate and the lower hinge plate are spherically rotated together; The traction mechanism includes a traction device and a steel strand, wherein both ends of the steel strand are connected to the traction mechanism and the swivel structure respectively, and the traction device can pull the upper capstan relative to the lower capstan through the steel strand to rotate the swivel structure; A stroke monitoring mechanism, used for detecting the stroke change and elongation of the steel strand; The arc length monitoring mechanism is used to detect the rotation arc length of the cantilever end point of the swivel structure before and after the rotation, so as to obtain the functional relationship between the stroke change and the rotation arc length.

2. The bridge rotation construction traction system according to claim 1, characterized in that: The steel strand is provided with a plurality of monitoring parts, and the stroke monitoring mechanism is used to detect the stroke change of the monitoring part and the elongation between two adjacent monitoring parts.

3. The bridge rotation construction traction system according to claim 1, characterized in that: The swivel mechanism further includes a ring channel and a plurality of hydraulic supports. The ring channel is annular and is located around the lower capstan. The hydraulic supports are fixed around the upper capstan. The hydraulic supports are in contact with the ring channel and slide in cooperation.

4. The bridge rotation construction traction system according to claim 3, characterized in that: The hydraulic support includes a first embedded part, a steel basin, a hollow rubber plate and a piston support. The first embedded part is embedded in the swivel structure. The steel basin is detachably connected to the embedded part. The hollow rubber plate is arranged in the steel basin. The piston support is liftable in the steel basin. The top end of the piston support abuts the hollow rubber plate and the bottom end abuts the annular channel. The hollow rubber plate is connected to a hydraulic subsystem and a force measuring subsystem. The hydraulic subsystem makes the piston support rise and fall. The force measuring subsystem is used to detect the pressure of the hollow rubber plate.

5. The bridge rotation construction traction system according to claim 4, characterized in that: The steel basin has a first opening, and the hydraulic subsystem includes an oil pump, a stop valve, a one-way valve, a relief valve and a connector that are connected in sequence. The connector is arranged in the first opening and is connected to the hollow rubber plate.

6. The bridge rotation construction traction system according to claim 4, characterized in that: The steel basin has a second opening, and the force measuring subsystem includes a pressure sensor. The pressure sensor is arranged in the second opening, and a contact head of the pressure sensor abuts against the hollow rubber.

7. The bridge rotation construction traction system according to claim 4, characterized in that: The hydraulic support further includes a second embedded part, which is embedded in the base. The loop is formed by splicing a plurality of arc-shaped slides, and the slides are detachably connected to the second embedded part.

8. The bridge rotation construction traction system according to claim 4, characterized in that: The hydraulic support also includes a plurality of hydraulic legs, the bottom of the hydraulic legs is provided with rollers, the bottom end of the piston support is provided with a plurality of auxiliary blind holes, and the hydraulic legs are telescopically arranged in the auxiliary blind holes; the hydraulic legs are telescopic and have a retracted state in which the bottom end of the roller is higher than the bottom end of the piston support, and a walking state in which the bottom end of the roller is lower than the bottom end of the piston support.

9. The bridge rotation construction traction system according to claim 1, characterized in that: The arc length monitoring mechanism includes a horizontal inclinometer and a wire displacement meter.

10. The bridge rotation construction traction system according to claim 1, characterized in that: The stroke monitoring mechanism includes a displacement sensor.

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