Beam bottom operation platform

Abstract

The utility model relates to a beam bottom operation platform which comprises a slip rope steel wire rope set which comprises at least two steel wire ropes arranged at the beam bottom in the bridge direction, and the two ends of each steel wire rope are fixedly connected to the two ends of a bridge body; the four corners of the top of the movable hanging basket are hung on the two steel wire ropes in a sliding mode, a detection cylinder arranged in the bridge direction is arranged on the movable hanging basket, and the detection cylinder is hollow and open at the two ends; the driving equipment comprises two groups of traction ropes, the traction ropes are connected with the movable hanging basket, and winding devices are connected to the ends, away from the movable hanging basket, of the two groups of traction ropes so as to drive the movable hanging basket to move through the winding devices; the safety ropes penetrate through the detection cylinder, a tension sensor is arranged between at least one end of each safety rope and the bridge body, and the tension sensors are in control connection with the winding device. By means of the tension sensor at the end of the safety rope, the situation that the movable hanging basket shakes greatly can be monitored and known, and at the moment, the winding devices on the two sides tension the traction rope at the same time to position the movable hanging basket and improve the stability.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a beam bottom working platform. Background Art

[0002] In recent years, steel tube concrete arch bridges have developed rapidly due to their advantages such as high material strength, convenient construction and beautiful appearance. As the key force transmission component of mid- and bottom-supported steel tube concrete arch bridges, the hanger is often made of flexible hangers made of high-strength steel wire or steel strand. The hanger is usually designed as a replaceable component with a design life of 20 years. However, due to insufficient consideration during early construction, inadequate daily maintenance in the later period, and the influence of external loads and environment, the actual service life of the hanger is far lower than the design life, and it is very easy to develop diseases. In recent years, there have been many accidents of arch bridge hanger fractures in China, so the arch bridge hangers need to be replaced in time. At present, many arch bridges in China have undergone hanger replacement work. It is expected that as the service life is extended, more and more arch bridges will need to replace hangers.

[0003] Due to space limitations on some bridges, it is not convenient to use bridge inspection vehicles, full-bridge supports and hangers. It is often necessary to build a movable beam bottom working platform first so that operators can perform related operations on the beam bottom working platform. However, the existing beam bottom working platform has a relatively simple structure and is occasionally subject to significant shaking due to external forces, such as strong winds and uneven force caused by the movement of personnel, which may cause the personnel on it to stand unstable or related tools to fall, etc., posing a safety hazard that needs to be further resolved. Utility Model Content

[0004] The present application provides a beam bottom working platform, which can solve the problems in the above-mentioned related technologies.

[0005] The embodiment of the present application provides a beam bottom working platform, which adopts the following technical solution:

[0006] A beam bottom working platform, comprising:

[0007] The cable wire rope group includes at least two wire ropes arranged at the bottom of the beam along the bridge direction, and the two ends of the wire ropes are fixedly connected to the two ends of the bridge body;

[0008] A mobile hanging basket, the four corner points of which are slidably hung on the two steel wire ropes, is provided with a detection cylinder arranged along the bridge direction, the detection cylinder is hollow and has open ends;

[0009] A driving device, comprising two groups of traction ropes arranged along the bridge direction, the traction ropes are respectively connected to the two ends of the mobile hanging basket along the bridge direction, and the two groups of traction ropes are connected to a winch device at the end away from the mobile hanging basket, so as to drive the mobile hanging basket to move through the winch device;

[0010] At least one set of safety ropes, which are arranged along the longitudinal direction of the bridge and pass through the detection cylinder, and at least one end of which is provided with a tension sensor between the end and the bridge body, and the tension sensor is connected to the control of the hoisting device.

[0011] In one embodiment, it further includes:

[0012] A control device, which is communicatively connected to the tension sensor, is connected to the control of the two hoisting devices, and is configured to control the two hoisting devices to simultaneously tighten the towing rope when the tension on the safety rope detected by the tension sensor is greater than a set threshold value, so as to position the movable hanging basket in the longitudinal direction of the bridge and improve the stability of the movable hanging basket in the direction perpendicular to the longitudinal direction of the bridge.

[0013] In one embodiment, the cable wire rope group further includes:

[0014] A center rope, the two ends of which are fixedly connected to the two ends of the bridge body and extend along the longitudinal direction of the bridge, and which is arranged directly above the longitudinal center line of the movable hanging basket, and each corner point of the movable hanging basket is simultaneously hung on the wire rope and the center rope.

[0015] In one embodiment, the downward deflection of the center rope is less than that of the wire rope.

[0016] In one embodiment, the safety rope is an elastic rope capable of elastic tensioning.

[0017] In one embodiment, the detection cylinder is arranged at the bottom of the movable hanging basket and directly below the longitudinal center line of the movable hanging basket.

[0018] In one embodiment, a fixing assembly is arranged between the end of the wire rope and the bridge body, and the fixing assembly includes:

[0019] A fixing seat, which is fixedly connected to the bridge body;

[0020] A tensioning member, which is arranged on the fixing seat, and the positioning of the tensioning member on the fixing seat in the longitudinal direction of the bridge is adjustable, and the end of the tensioning member close to the movable hanging basket is connected to the end of the wire rope;

[0021] A connecting head, which is fixedly connected to the end of the tensioning member, and the connecting head is connected to the wire rope through a pin shaft.

[0022] In one embodiment, the tensioning member is a precision rolled threaded steel threadedly passing through the fixing seat, one end of which passes through the fixing seat and is threadedly sleeved with a nut for abutting against the fixing seat, and the other end of which is fixedly connected to the connecting head.

[0023] In one embodiment, it further includes:

[0024] An operating device is provided inside the movable hanging basket and is connected to the two hoisting devices, which include a forward button and a reverse button, so as to control the two hoisting devices to drive the towing ropes on both sides of the movable hanging basket in different driving manners through the forward button and the reverse button.

[0025] In one embodiment, a stability button is further provided on the operating device, and the stability button is used to control the two hoisting devices to simultaneously tighten the towing ropes.

[0026] The beneficial effects brought by the technical solution provided by the embodiment of the present application include:

[0027] By providing towing ropes and hoisting devices on both sides of the movable hanging basket, it is realized that the hoisting devices on both sides can respectively control the movable hanging basket to move to both sides. At the same time, the provided installation rope can, when the movable hanging basket shakes greatly, monitor and obtain information by means of the tension sensors at both ends of the safety rope. Also, since the tension sensors are connected to the control of the hoisting devices, at this time, it is possible to simultaneously tighten the towing ropes by the hoisting devices on both sides, thereby positioning the movable hanging basket and further improving the stability of the movable hanging basket. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is the front view of the structure of the beam bottom operation platform provided by the embodiment of the present application;

[0030] Figure 2 It is the side view of the structure of the beam bottom operation platform provided by the embodiment of the present application;

[0031] Figure 3 It is the schematic diagram of the structure of the fixing component of the beam bottom operation platform provided by the embodiment of the present application.

[0032] In the figure: 1, steel wire rope; 2, movable hanging basket; 3, detection cylinder; 4, towing rope; 5, safety rope; 7, center rope; 8, fixed seat; 9, tensioning member; 10, connecting head; 11, nut. Detailed Embodiments

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In recent years, steel tube concrete arch bridges have developed rapidly due to their advantages such as high material strength, convenient construction and beautiful appearance. As the key force transmission component of mid- and bottom-supported steel tube concrete arch bridges, the hanger is often made of flexible hangers made of high-strength steel wire or steel strand. The hanger is usually designed as a replaceable component with a design life of 20 years. However, due to insufficient consideration during early construction, inadequate daily maintenance in the later period, and the influence of external loads and environment, the actual service life of the hanger is far lower than the design life, and it is very easy to develop diseases. In recent years, there have been many accidents of arch bridge hanger fractures in China, so the arch bridge hangers need to be replaced in time. At present, many arch bridges in China have undergone hanger replacement work. It is expected that as the service life is extended, more and more arch bridges will need to replace hangers.

[0035] Due to space limitations on some bridges, it is not convenient to use bridge inspection vehicles, full-bridge supports and hangers. It is often necessary to build a movable beam bottom working platform first so that operators can perform related operations on the beam bottom working platform. However, the existing beam bottom working platform has a relatively simple structure and is occasionally subject to significant shaking due to external forces, such as strong winds and uneven force caused by the movement of personnel, which may cause the personnel on it to stand unstable or related tools to fall, etc., posing a safety hazard that needs to be further resolved.

[0036] Based on the above problems, an embodiment of the present application provides a beam bottom working platform. The key point of its practical application is that by arranging traction ropes and winches on both sides of the mobile hanging basket, the winches on both sides can respectively control the mobile hanging basket to move to both sides. At the same time, the installation rope can be monitored with the help of tension sensors at both ends of the safety rope when the mobile hanging basket shakes significantly. Since the tension sensor is controlled and connected with the winch device, the winches on both sides can tighten the traction rope at the same time, thereby positioning the mobile hanging basket 2 and further improving the stability of the mobile hanging basket 2.

[0037] Reference Figure 1 , a beam bottom working platform provided in this application includes:

[0038] A group of sliding cable steel wire ropes 1, comprising at least two steel wire ropes 1 arranged along the bridge at the bottom of the beam, with both ends of the steel wire ropes 1 fixedly connected to the two ends of the bridge body;

[0039] A movable hanging basket 2, the four corner points at its top are slidably hung on the two steel wire ropes 1, and a detection cylinder 3 arranged in the longitudinal direction of the bridge is provided thereon. The detection cylinder 3 is hollow and open at both ends;

[0040] A driving device, which includes two groups of traction ropes 4 arranged in the longitudinal direction of the bridge. The traction ropes 4 are respectively connected to the two ends of the movable hanging basket 2 in the longitudinal direction of the bridge, and winch devices (not shown in the figure) are connected to the ends of the two groups of traction ropes 4 far from the movable hanging basket 2 to drive the movable hanging basket 2 to move through the winch devices;

[0041] At least one group of safety ropes 5, which are arranged in the longitudinal direction of the bridge and pass through the detection cylinder 3. At least one end of the safety ropes 5 is provided with a tension sensor (not shown in the figure) between the safety ropes and the bridge body, and the tension sensor is connected to the control of the winch device.

[0042] Among them, the safety rope 5 should be a rope body with elastic stretching properties that can be stretched and reset in the longitudinal direction of the bridge, such as an elastic rope, etc. When the two ends of the safety rope 5 are fixedly connected to both ends of the bridge body, they will remain in a tightened state, that is, at this time, the two ends of the safety rope 5 will still have an initial tension that can be obtained by the tension detector without being contacted by external forces. Furthermore, when the central rope 7 is driven to shake by the detection cylinder 3 due to the shaking of the movable hanging basket 2, a significant change in tension will be detected on the tension detector.

[0043] Furthermore, when the movable hanging basket 2 shakes in the direction perpendicular to the bridge direction, it can drive the safety rope 5 to stretch further through the detection cylinder 3. At this time, the tension at both ends of the safety rope 5 will change. When the tension sensor knows that the tension at both ends of the safety rope 5 has changed, and when the change amplitude of the tension is large, that is, the detected tension value is greater than the preset tension threshold, it can be determined that the movable hanging basket 2 is in an unsafe shaking state. Finally, the tension sensor will be functionally connected to the winch devices on both sides of the movable hanging basket 2. Specifically, the value of the tension sensor can be obtained through a control device such as a computer. Then, when it is determined that the movable hanging basket 2 is in an unsafe shaking state, the winch devices on both sides will be further controlled to pull the traction ropes 4 simultaneously to achieve positioning and further improve the stability of the movable hanging basket 2.

[0044] With such a setting, by arranging the traction ropes 4 and winch devices on both sides of the movable hanging basket 2, it is realized that the winch devices on both sides can respectively control the movable hanging basket 2 to move to both sides. At the same time, the installed ropes can be monitored and known by means of the tension sensors at both ends of the safety rope 5 when the movable hanging basket 2 shakes greatly. Also, because the tension sensor is connected to the control of the winch device, at this time, the winch devices on both sides can be controlled to tighten the traction ropes 4 simultaneously, thereby positioning the movable hanging basket 2 and further improving the stability of the movable hanging basket 2.

[0045] Further, in some preferred embodiments, it further includes:

[0046] A control device (not shown in the figure), the control device is communicatively connected to the tension sensor, is controllably connected to the two hoisting devices, and is configured to control the two hoisting devices to simultaneously tighten the towing rope 4 when the tension on the safety rope 5 detected by the tension sensor is greater than a set threshold, so as to position the movable hanging basket 2 in the bridge direction and improve the stability of the movable hanging basket 2 in the direction perpendicular to the bridge direction.

[0047] With such a setting, the control device realizes the functional control connection between the tension sensor and the hoisting device. The control device can be a computer or the like electrically connected to the tension sensor and the hoisting device.

[0048] Referring to Figure 2 , further, in some preferred embodiments, the cable wire rope 1 group further includes:

[0049] A center rope 7, both ends of which are fixedly connected to both ends of the bridge body and extend along the bridge direction, and it is arranged directly above the center line of the movable hanging basket 2 in the bridge direction. Each corner point of the movable hanging basket 2 is simultaneously hung on the wire rope 1 and the center rope 7.

[0050] Specifically, both ends of the center rope 7 are in a tightened state while being fixedly connected to both ends of the bridge body, and the tightened degree is greater than that of the tightened state, so that its downward deflection is less than that of the towing rope 4. Furthermore, the stability of the center rope 7 is relatively higher than that of the wire rope 1. At this time, with the help of the center rope 7 directly above the center line of the movable hanging basket 2, each corner point of the movable hanging basket 2 can be relatively more stable, and the possibility of sliding will be relatively smaller.

[0051] At the same time, in order to make the downward deflection of the center rope 7 less than that of the wire rope 1, in actual operation, the center rope 7 can be installed first without adjusting its tightened degree, that is, at this time, the center rope 7 is in a state with a relatively large downward deflection. After adjusting the wire rope 1 and the movable hanging basket 2, then tighten the center rope 7 so that its downward deflection gradually decreases to be less than that of the wire rope 1. In this process, the gravity of the movable hanging basket will gradually transfer from the two side wire ropes 1 to the center rope 7, and finally reach a state where all three can bear the gravity of the movable hanging basket, but the downward deflection of the center rope 7 is relatively lower. And at this time, the corner points on both sides of the movable hanging basket 2 will form a double triangular hanging method with the wire rope 1 and the center rope 7 above it, and the stability will be further improved.

[0052] Further, in some preferred embodiments, the safety rope 5 is an elastic rope capable of elastic tensioning.

[0053] This setting ensures that when the safety rope 5 is driven by the shaking of the movable hanging basket 2, it will stretch, thereby changing the tension at both ends.

[0054] Further, in some preferred embodiments, the detection cylinder 3 is disposed at the bottom of the movable hanging basket 2 and directly below the center line of the movable hanging basket 2 in the longitudinal direction of the bridge.

[0055] With this setting, the detection cylinder 3 is at the center of the bottom surface of the movable hanging basket 2. When it shakes in the direction perpendicular to the bridge, the movement amplitude of the detection cylinder 3 in this direction is the largest, which can thus affect the safety rope 5 to the greatest extent. That is, it amplifies the detection ability of the safety rope 5 during use, enabling the movable hanging basket 2 to be more accurately monitored for unsafe shaking.

[0056] Refer to Figure 3 , further, in some preferred embodiments, a fixing component is provided between the end of the steel wire rope 1 and the bridge body. The fixing component includes:

[0057] A fixing seat 8, which is fixedly connected to the bridge body;

[0058] A tensioning member 9, which is disposed on the fixing seat 8. The tensioning member is adjustable in position along the longitudinal direction of the bridge on the fixing seat 8, and the end of the tensioning member close to the movable hanging basket 2 is connected to the end of the steel wire rope 1;

[0059] A connecting head 10, which is fixedly connected to the end of the tensioning member. The connecting head 10 is connected to the steel wire rope 1 through a pin shaft.

[0060] Among them, the fixing seat 8 is a cross beam at both ends of the bridge body, and the tensioning member 9 is a precision rolled threaded steel threadedly passing through the fixing seat 8 and arranged along the longitudinal direction of the bridge. One end passes through the fixing seat 8 and is threadedly sleeved with a nut 11 for pressing against the fixing seat 8, and the other end is fixedly connected to the connecting head 10.

[0061] With this setting, after the steel wire rope 1 is first connected to the bridge body with the help of the connecting head 10, it is then tensioned on the bridge body through the cooperation of the tensioning member 9, that is, the precision rolled threaded steel and the nut 11. At the same time, for other rope bodies, such as the center rope 7 and the safety rope 5, the adjustable settings at both ends on the bridge body can be completed by using the fixing component. For their respective setting states, those skilled in the art can adjust the fixing component according to needs, and will not be further elaborated here.

[0062] Further, in some preferred embodiments, it further includes:

[0063] An operating device (not shown in the figure) is provided inside the movable hanging basket 2 and is connected to the two hoisting devices, which include a forward button (not shown in the figure) and a reverse button (not shown in the figure), so as to control the two hoisting devices to drive the towing ropes 4 on both sides of the movable hanging basket 2 in different driving modes through the forward button and the reverse button.

[0064] Specifically, after the operator on the movable hanging basket 2 presses the forward button, one of the hoisting devices will be controlled to wind up the towing rope 4, and the other hoisting device will pay out the towing rope 4. On the contrary, after the operator on the movable hanging basket 2 presses the reverse button, the two hoisting devices will be controlled to drive in the opposite way, enabling the operator inside the movable hanging basket 2 to adjust the position of the movable hanging basket 2 as needed, which is convenient for construction.

[0065] Furthermore, in some preferred embodiments, a stability button (not shown in the figure) is also provided on the operating device, and the stability button is used to control the two hoisting devices to simultaneously tighten the towing rope 4.

[0066] With such a setting, when the operator inside the movable hanging basket 2 needs to fix the construction at a certain position, the position of the movable hanging basket 2 can be fixed through the stability button, thereby preventing the position of the movable hanging basket 2 from gradually changing in the bridge direction due to vibration factors. At the same time, the movable hanging basket 2 in this state also has stronger stability, and the safety during construction at this position can be further ensured.

[0067] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0069] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A beam bottom working platform, characterized in that: It includes: A cable wire rope (1) group, comprising at least two wire ropes (1) arranged along the bridge direction at the bottom of the beam, with both ends of the wire rope (1) fixedly connected to both ends of the bridge body; A movable hanging basket (2) is slidably hung on the two steel wire ropes (1) at four corner points on the top thereof, and a detection cylinder (3) arranged along the bridge direction is provided on the movable hanging basket (2), and the detection cylinder (3) is hollow and has open ends; A driving device, comprising two groups of traction ropes (4) arranged along the bridge direction, the traction ropes (4) being respectively connected to the two ends of the mobile hanging basket (2) along the bridge direction, and the two groups of traction ropes (4) are both connected to a hoisting device at the ends away from the mobile hanging basket (2), so as to drive the mobile hanging basket (2) to move through the hoisting device; At least one group of safety ropes (5) is arranged along the bridge direction and passes through the detection tube (3), a tension sensor is arranged between at least one end of the safety rope and the bridge body, and the tension sensor is control-connected to the hoisting device.

2. The beam bottom working platform according to claim 1, characterized in that: Also includes: A control device is communicatively connected with the tension sensor and is control-connected with the two hoisting devices, and is used to control the two hoisting devices to simultaneously tighten the traction rope (4) when the tension on the safety rope (5) detected by the tension sensor is greater than a set threshold, so as to position the mobile hanging basket (2) in the direction of the bridge and improve the stability of the mobile hanging basket (2) in the direction perpendicular to the bridge direction.

3. The beam bottom working platform according to claim 1, characterized in that: The cable wire rope (1) group further comprises: The center rope (7) has two ends fixedly connected to the two ends of the bridge body and extends along the bridge direction, and is arranged just above the center line of the mobile hanging basket (2) in the bridge direction, and each corner point of the mobile hanging basket (2) is simultaneously hung on the steel wire rope (1) and the center rope (7).

4. The beam bottom working platform according to claim 3, characterized in that: The downward deflection of the center rope (7) is smaller than the downward deflection of the steel wire rope (1).

5. The beam bottom working platform according to claim 1, characterized in that: The safety rope (5) is an elastic rope that can be elastically stretched.

6. The beam bottom working platform according to claim 1, characterized in that: The detection cylinder (3) is arranged at the bottom of the mobile hanging basket (2) and is located directly below the center line of the mobile hanging basket (2) along the bridge direction.

7. The beam bottom working platform according to claim 1, characterized in that: A fixing assembly is provided between the end of the steel wire rope (1) and the bridge body, and the fixing assembly comprises: A fixed seat (8) fixedly connected to the bridge body; A tensioning member (9) is arranged on the fixing seat (8), and the tensioning member (9) is adjustable on the fixing seat (8) so that its position along the bridge direction can be adjusted. The tensioning member (9) is connected to the end of the steel wire rope (1) at an end close to the mobile hanging basket (2); A connector (10) is fixedly connected to the end of the tensioning member (9), and the connector (10) is connected to the steel wire rope (1) via a pin.

8. The beam bottom working platform according to claim 7, characterized in that: The tensioning member (9) is a finely rolled threaded steel bar threadedly inserted into the fixing seat (8), one end of which passes through the fixing seat (8) and is threadedly sleeved with a nut (11) for tightening the fixing seat (8), and the other end of which is fixedly connected to the connecting head (10).

9. The beam bottom working platform according to claim 1, characterized in that: Also includes: An operating device is arranged in the mobile hanging basket (2) and is connected to the two hoisting devices, and includes a forward button and a reverse button, so as to control the two hoisting devices to drive the traction ropes (4) on both sides of the mobile hanging basket (2) in different driving modes through the forward button and the reverse button.

10. The beam bottom working platform according to claim 9, characterized in that: The operating device is also provided with a stabilizing button, which is used to control two hoisting devices to tighten the traction rope (4) simultaneously.

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