Device and method for quickly replacing bottom support of old bridge

Abstract

The invention discloses a device and method for rapidly replacing an old bridge bottom support, belongs to the technical field of bridge support replacement, and solves the technical problems that an existing bridge support replacement mode is long in construction period and inflexible. The device comprises a bridge detection vehicle, a pump station, a controller, a plurality of jacks and an electric hoist used for hoisting materials, a working platform is arranged at the lower end of a working arm of the bridge detection vehicle, a rail is arranged at the top of the working platform, a mechanical arm capable of reciprocating along the rail is arranged on the rail, and a supporting plate used for transferring the materials is arranged at the execution end of the mechanical arm. The controller is electrically connected with the mechanical arm through a cable, the pump station is connected with the jack through a hydraulic pipe, and the electric hoist is installed at a designated hoisting position of the bridge detection vehicle or a bridge floor. The device is used for transferring a jack or a beam bottom support to quickly replace an old bridge bottom support, the construction period is short, the cost is low, traffic can not be interrupted, the device is more suitable for replacing a whole bridge support or a local support, the construction is flexible, and the cost performance is high.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge bearing replacement, and more specifically, to a device and method for quickly replacing a bottom bearing of an old bridge. Background Art

[0002] As a key component of the bridge structure, bridge bearings are responsible for transmitting the reaction force of the superstructure and ensuring that the structure can deform freely under the influence of various factors. Therefore, the condition of the bearings is directly related to the safety and stability of the bridge. In order to ensure the safety and stability of the bridge, it is crucial to regularly inspect the bridge bearings. Through inspection, problems with the bearings can be discovered in time and appropriate measures can be taken to repair or replace them.

[0003] The current method of replacing bridge bearings is: the full-bridge support is used as an operating platform, and a winch or crane is used to lower the jacking equipment vertically to the designated position under the beam, and then it is manually transferred to the cap beam position for installation.

[0004] The shortcomings of the current technology are: 1. The construction period of the full-bridge support operating platform is long, the cost is high, and the cost of traffic interruption is high; 2. When the jacking equipment is moved horizontally to the temporary storage point of the cap beam, it needs to be dragged manually or with a hand winch, which is inefficient; 3. It is not suitable for urban overpasses or bridges in geographically restricted environments such as deep ditches and deep seas; 4. If the entire bridge bearings are replaced less frequently, the one-time investment cost is high, it is inflexible, and the cost-effectiveness is low. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One purpose of the present invention is to provide a device for quickly replacing the bottom bearing of an old bridge, which has a short construction period, low cost and no need to interrupt traffic.

[0006] The second purpose of the present invention is to provide a method for quickly replacing the bottom bearing of an old bridge.

[0007] In order to achieve the above-mentioned purpose one, the present invention provides a device for quickly replacing the bottom bearing of an old bridge, including a bridge inspection vehicle, a pump station, a controller, a plurality of jacks, and an electric hoist for lifting materials. The lower end of the working arm of the bridge inspection vehicle is provided with a working platform, the top of the working platform is provided with a track, the track is provided with a mechanical arm that can reciprocate along the track, the execution end of the mechanical arm is provided with a pallet for transferring materials, the controller is electrically connected to the mechanical arm through a cable, the pump station is connected to the jack through a hydraulic pipe, and the electric hoist is installed at a designated lifting position of the bridge inspection vehicle or the bridge deck.

[0008] As a further improvement, the robotic arm comprises a rotating telescopic column, a horizontal telescopic arm is provided on the top of the rotating telescopic column, one end of the horizontal telescopic arm is connected to the support plate, and a position adjustment mechanism connected to the track is provided on the bottom of the rotating telescopic column.

[0009] Furthermore, the rotating telescopic column includes a fixed support column with a hollow structure, a telescopic column and a vertical telescopic mechanism driving the telescopic column to move up and down are arranged inside the fixed support column, the fixed support column is provided with a rotating drive mechanism driving the telescopic column to rotate, and the top of the telescopic column is connected to the horizontal telescopic arm.

[0010] Furthermore, the rotary drive mechanism includes a large gear slidingly sleeved on the outer wall of the telescopic column, the top of the fixed support column is rotatably connected to the large gear, the top of the fixed support column is provided with a limiting cylinder for limiting the large gear on the top of the fixed support column, the top of the fixed support column is provided with a rotating motor, the rotating motor is provided with a small gear meshing with the large gear, and a limiting structure is provided between the telescopic column and the large gear.

[0011] Furthermore, the vertical telescopic mechanism is any one of an electric push rod, a pneumatic cylinder, and an oil cylinder.

[0012] Furthermore, the horizontal telescopic arm comprises a horizontal column connected to the rotating telescopic column, a horizontal telescopic mechanism is arranged in the horizontal column, and one end of the horizontal telescopic mechanism is connected to the support plate.

[0013] Furthermore, the horizontal telescopic mechanism is any one of an electric push rod, a pneumatic cylinder, and an oil cylinder.

[0014] Furthermore, the horizontal telescopic arm is connected to the rotating telescopic column via a connecting arm.

[0015] Furthermore, the position adjustment mechanism includes a transverse movement mechanism located at the bottom of the rotating telescopic column and capable of adjusting the position along the vertical direction of the track, and a longitudinal movement mechanism is provided at the bottom of the transverse movement mechanism and capable of adjusting the position along the extension direction of the track.

[0016] In order to achieve the above-mentioned second objective, the present invention provides a method for quickly replacing the bottom bearing of an old bridge, comprising the following steps:

[0017] Step 1. Preliminary preparation: the bridge inspection vehicle unfolds the working platform on the bridge deck along the longitudinal direction of the bridge deck, installs the track at this time, and installs the robotic arm on the track;

[0018] Step 2. The bridge inspection vehicle vertically lowers the working platform, track, and robotic arm to a predetermined height under the cap beam;

[0019] Step 3. The working platform is rotated 90°, at which point the working platform is horizontally parallel to the bridge deck, and the operating space is observed, and the working platform is moved close to the bottom support of the bridge;

[0020] Step 4. After the horizontal telescopic arm of the robotic arm is rotated to be horizontally parallel to the bridge deck, the robotic arm is moved to the front end of the working platform, and the electric hoist is used to lower the jack from the bridge deck to the support plate of the robotic arm;

[0021] Step 5. The mechanical arm moves the jack laterally along the bridge deck to the installation position, the rotating telescopic column of the mechanical arm lifts the jack to the required installation height, and the horizontal telescopic arm is rotated to move the jack to the vicinity of the bottom support of the bridge;

[0022] Step 6. After the position adjustment mechanism adjusts the installation position of the jack along the longitudinal direction of the bridge deck, the horizontal telescopic mechanism pushes out the jack and unloads it onto the cap beam;

[0023] Step 7. Repeat steps 4 to 6 until all the jacks are installed;

[0024] Step 8. Install the hydraulic pipe, operate the pump station to lift the bridge deck to a set height, and lower the bridge deck after replacing the bridge bottom support, thereby completing the replacement of the bridge bottom support here;

[0025] Step 9. Remove the hydraulic pipe, remove the jack, and transfer the jack to the position where the jack is vertically lowered by the mechanical arm in turn, and hoist the jack to the bridge deck for standby use by the electric hoist;

[0026] Step 10. The mechanical arm is reset, and the working platform is rotated 90° in the opposite direction. At this time, the working platform is flush with the bridge deck longitudinally, and the bridge inspection vehicle is moved to the replacement position of the bridge bottom support of the next pier;

[0027] Step 11. Repeat steps 3 to 10 until all bridge bottom bearings are replaced;

[0028] Step 12. After the working platform is lifted to the predetermined height of the bridge deck, the track and the mechanical arm are removed to complete the construction project.

[0029] Beneficial Effects

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The device of the present invention is used to transfer the jack or the bottom support of the beam to quickly replace the bottom support of the old bridge. The construction period is short, the cost is low, and the traffic can be kept uninterrupted, providing a feasible solution for the replacement of supports on high-traffic roads in large cities. It can effectively solve the problem of difficult replacement of bridge supports in urban overpasses or bridges in geographical environments such as deep trenches and deep seas, and is more suitable for the replacement of entire bridge supports or partial supports. It is flexible in construction and has high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the practical application of the present invention;

[0033] Figure 2 It is a schematic diagram of the top view of the track and the mechanical arm in the present invention;

[0034] Figure 3 It is a schematic diagram of the main structure of the robot arm in the present invention;

[0035] Figure 4 is a cross-sectional view of the mechanical arm of the present invention;

[0036] Figure 5 for Figure 3 The enlarged view of point A in the middle;

[0037] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0038] Figure 7 It is a schematic diagram of the main structure of the transverse movement mechanism and the longitudinal movement mechanism in the present invention;

[0039] Figure 8 It is a left-side structural schematic diagram of the transverse movement mechanism and the longitudinal movement mechanism in the present invention.

[0040] Among them: 1-bridge inspection vehicle, 2-pump station, 3-controller, 4-jack, 5-electric hoist, 6-working arm, 7-working platform, 8-track, 9-mechanical arm, 10-pallet, 11-cable, 12-hydraulic pipe, 13-bridge deck, 14-rotating telescopic column, 15-horizontal telescopic arm, 16-fixed support column, 17-telescopic column, 18-vertical telescopic mechanism, 19-large gear, 20-limiting cylinder, 21-rotating motor, 22-small gear, 23-horizontal column, 24-horizontal telescopic mechanism, 25-connecting arm, 26-transverse movement mechanism, 27-longitudinal movement mechanism, 28-cap beam, 29-bridge bottom support, 30-bridge pier, 31-limiting strip, 32-first I-beam, 33-first roller, 34-first motor, 35-second I-beam, 36-third I-beam, 37-second roller, 38-second motor. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0042] See also Figures 1 to 8 , a device for quickly replacing the bottom bearing of an old bridge, comprising a bridge inspection vehicle 1, a pump station 2, a controller 3, a plurality of jacks 4, and an electric hoist 5 for lifting materials. The bridge inspection vehicle 1 can adopt an existing mature bridge inspection vehicle, and a working platform 7 is provided at the lower end of the working arm 6 of the bridge inspection vehicle 1, and a track 8 is provided on the top of the working platform 7. The track 8 is provided with a mechanical arm 9 that can reciprocate along the track 8, and the execution end of the mechanical arm 9 is provided with a pallet 10 for transferring materials. The controller 3 is electrically connected to the mechanical arm 9 through a cable 11, and the pump station 2 is connected to the jack 4 through a hydraulic pipe 12. The electric hoist 5 is installed at a designated lifting position of the bridge inspection vehicle 1 or the bridge deck 13.

[0043] Specifically, the robot arm 9 includes a rotating telescopic column 14 , a horizontal telescopic arm 15 is provided on the top of the rotating telescopic column 14 , one end of the horizontal telescopic arm 15 is connected to the support plate 10 , and a position adjustment mechanism connected to the track 8 is provided at the bottom of the rotating telescopic column 14 .

[0044] The rotating telescopic column 14 includes a fixed support column 16 of a hollow structure, a telescopic column 17 and a vertical telescopic mechanism 18 for driving the telescopic column 17 to move up and down are arranged in the fixed support column 16, and a rotating driving mechanism for driving the telescopic column 17 to rotate is arranged in the fixed support column 16, and the top of the telescopic column 17 is connected to the horizontal telescopic arm 15. The controller 3 is electrically connected to the vertical telescopic mechanism 18 through the cable 11. The vertical telescopic mechanism 18 is any one of an electric push rod, a pneumatic cylinder, and an oil cylinder. The upper end of the vertical telescopic mechanism 18 is rotatably connected to the top of the telescopic column 17, and specifically, the upper end of the vertical telescopic mechanism 18 is rotatably connected to the top of the telescopic column 17 through a bearing.

[0045] The rotary drive mechanism includes a large gear 19 that is slidably sleeved on the outer wall of the telescopic column 17, the top of the fixed support column 16 is rotatably connected to the large gear 19, and the top of the fixed support column 16 is provided with a limit cylinder 20 that limits the large gear 19 to the top of the fixed support column 16. A rotary motor 21 is provided at the top of the fixed support column 16, and the rotary motor 21 is provided with a small gear 22 that meshes with the large gear 19, and the controller 3 is electrically connected to the rotary motor 21 through the cable 11.

[0046] A limiting structure is provided between the telescopic column 17 and the large gear 19, and the limiting structure includes a limiting strip 31 located on the outer wall of the telescopic column 17, and a limiting groove is provided in the large gear 19. The limiting strip 31 is slidably connected with the limiting groove. Under the action of the limiting structure, the telescopic column 17 and the large gear 19 rotate simultaneously. Of course, the limiting strip can also be provided in the large gear 19, and the limiting groove is provided on the outer wall of the telescopic column 17.

[0047] The horizontal telescopic arm 15 includes a horizontal column 23 connected to the rotating telescopic column 14, and a horizontal telescopic mechanism 24 is arranged in the horizontal column 23. One end of the horizontal telescopic mechanism 24 is connected to the support plate 10. The controller 3 is electrically connected to the horizontal telescopic mechanism 24 through the cable 11. The horizontal telescopic mechanism 24 is any one of an electric push rod, a pneumatic cylinder, and an oil cylinder.

[0048] The horizontal telescopic arm 15 is connected to the rotating telescopic column 14 through the connecting arm 25. That is, the two ends of the connecting arm 25 are connected to the horizontal column 23 and the telescopic column 17 respectively through bolts.

[0049] The position adjustment mechanism includes a transverse movement mechanism 26 located at the bottom of the rotating telescopic column 14 and capable of adjusting the position in the vertical direction of the track 8 , and a longitudinal movement mechanism 27 capable of adjusting the position in the extension direction of the track 8 is provided at the bottom of the transverse movement mechanism 26 .

[0050] Specifically, the track 8 is composed of two parallel I-beams. The longitudinal movement mechanism 27 includes four first I-beams 32, which are divided into two groups and are respectively installed on two I-beams of the track 8. A first roller 33 is provided between each group of first I-beams 32, and the first roller 33 contacts the track 8. A first motor 34 for driving the first roller 33 to rotate is provided on one side of the first I-beam 32, and two second I-beams 35 arranged side by side are commonly connected to the tops of the four first I-beams 32. The transverse movement mechanism 26 includes two third I-beams 36, which are respectively installed on both sides of the two second I-beams 35, and two second rollers 37 are provided between the two third I-beams 36, and the two second rollers 37 contact the two second I-beams 35 respectively, and a second motor 38 for driving the second roller 37 to rotate is provided on one side of the third I-beam 36. The controller 3 is electrically connected to the first motor 34 and the second motor 38 through the cable 11.

[0051] A method for quickly replacing the bottom bearing of an old bridge comprises the following steps:

[0052] Step 1. Preliminary preparation: the bridge inspection vehicle 1 unfolds the working platform 7 on the bridge deck 13 longitudinally along the bridge deck 13, at which time the track 8 is installed, and the robot arm 9 is installed on the track 8;

[0053] Step 2. The bridge inspection vehicle 1 lowers the working platform 7, the track 8, and the robotic arm 9 vertically to a predetermined height below the cap beam 28;

[0054] Step 3. The working platform 7 rotates 90°, and the working platform 7 is horizontally parallel to the bridge deck 13. Observe the operating space and move the working platform 7 close to the bottom support 29 of the bridge;

[0055] Step 4. After the horizontal telescopic arm 15 of the robot arm 9 is rotated to be horizontally parallel to the bridge deck 13, the robot arm 9 is moved to the front end of the working platform 7, and the electric hoist 5 is used to lower the jack 4 from the bridge deck 13 to the pallet 10 of the robot arm 9;

[0056] Step 5. The mechanical arm 9 moves the jack 4 laterally along the bridge deck 13 to the installation position, the rotating telescopic column 14 of the mechanical arm 9 lifts the jack 4 to the required installation height, and the rotating horizontal telescopic arm 15 moves the jack 4 to the vicinity of the bottom support 29 of the bridge;

[0057] Step 6. After the position adjustment mechanism adjusts the installation position of the jack 4 longitudinally along the bridge deck 13, the horizontal telescopic mechanism 24 pushes out the jack 4 and unloads it onto the cap beam 28;

[0058] Step 7. Repeat steps 4 to 6 until all jacks 4 are installed; of course, the new bridge bottom support 29 can also be transported like the jack 4;

[0059] Step 8. Install the hydraulic pipe 12, operate the pump station 2 to lift the bridge deck 13 to a set height, complete the replacement of the bridge bottom support 29, and then lower the bridge deck 13, thereby completing the replacement of the bridge bottom support 29 here;

[0060] Step 9. Remove the hydraulic pipe 12, remove the jack 4, and the jack 4 is sequentially transferred by the mechanical arm 9 to the position where the jack 4 is vertically lowered, and the jack 4 is hoisted by the electric hoist 5 to the bridge deck 13 for standby use; of course, the old bridge bottom support 29 can also be transported like the jack 4;

[0061] Step 10. The robot arm 9 is reset, and the working platform 7 is rotated 90° in the opposite direction. At this time, the working platform 7 is flush with the bridge deck 13 in the longitudinal direction, and the bridge inspection vehicle 1 is moved to the replacement position of the bridge bottom support 29 of the next pier 30;

[0062] Step 11. Repeat steps 3 to 10 until all bridge bottom supports 29 are replaced;

[0063] Step 12. After the working platform 7 is lifted to the predetermined height of the bridge deck 13, the track 8 and the mechanical arm 9 are removed to complete the construction project.

[0064] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A device for quickly replacing the bottom bearing of an old bridge, characterized in that: The invention comprises a bridge inspection vehicle (1), a pump station (2), a controller (3), a plurality of jacks (4), and an electric hoist (5) for lifting materials. The lower end of the working arm (6) of the bridge inspection vehicle (1) is provided with a working platform (7), the top of the working platform (7) is provided with a track (8), the track (8) is provided with a mechanical arm (9) that can reciprocate along the track (8), the execution end of the mechanical arm (9) is provided with a pallet (10) for transferring materials, the controller (3) is electrically connected to the mechanical arm (9) through a cable (11), the pump station (2) is connected to the jack (4) through a hydraulic pipe (12), and the electric hoist (5) is installed at a designated lifting position of the bridge inspection vehicle (1) or the bridge deck (13).

2. A device for rapid replacement of old bridge bottom bearings according to claim 1, characterized in that: The mechanical arm (9) comprises a rotating telescopic column (14), a horizontal telescopic arm (15) is provided on the top of the rotating telescopic column (14), one end of the horizontal telescopic arm (15) is connected to the support plate (10), and a position adjustment mechanism connected to the track (8) is provided on the bottom of the rotating telescopic column (14).

3. A device for rapid replacement of old bridge bottom bearings according to claim 2, characterized in that: The rotating telescopic column (14) comprises a fixed support column (16) of a hollow structure, a telescopic column (17) and a vertical telescopic mechanism (18) for driving the telescopic column (17) to move up and down are arranged inside the fixed support column (16), and a rotating driving mechanism for driving the telescopic column (17) to rotate is arranged on the fixed support column (16), and the top of the telescopic column (17) is connected to the horizontal telescopic arm (15).

4. A device for rapid replacement of old bridge bottom bearings according to claim 3, characterized in that: The rotary drive mechanism comprises a large gear (19) which is slidably sleeved on the outer wall of the telescopic column (17); the top of the fixed support column (16) is rotatably connected to the large gear (19); the top of the fixed support column (16) is provided with a limiting cylinder (20) which limits the large gear (19) to the top of the fixed support column (16); the top of the fixed support column (16) is provided with a rotary motor (21); the rotary motor (21) is provided with a small gear (22) which meshes with the large gear (19); and a limiting structure is provided between the telescopic column (17) and the large gear (19).

5. The device for quickly replacing the bottom bearing of an old bridge according to claim 3 is characterized in that: The vertical telescopic mechanism (18) is any one of an electric push rod, an air cylinder, and an oil cylinder.

6. The device for quickly replacing the bottom bearing of an old bridge according to claim 2 is characterized in that: The horizontal telescopic arm (15) comprises a horizontal column (23) connected to the rotating telescopic column (14), a horizontal telescopic mechanism (24) is arranged inside the horizontal column (23), and one end of the horizontal telescopic mechanism (24) is connected to the support plate (10).

7. A device for rapid replacement of old bridge bottom bearings according to claim 6, characterized in that: The horizontal telescopic mechanism (24) is any one of an electric push rod, an air cylinder, and an oil cylinder.

8. The device for quickly replacing the bottom bearing of an old bridge according to claim 6 is characterized in that: The horizontal telescopic arm (15) is connected to the rotating telescopic column (14) via a connecting arm (25).

9. The device for quickly replacing the bottom bearing of an old bridge according to claim 2, characterized in that: The position adjustment mechanism comprises a transverse movement mechanism (26) located at the bottom of the rotating telescopic column (14) and capable of adjusting the position along the vertical direction of the track (8); the bottom of the transverse movement mechanism (26) is provided with a longitudinal movement mechanism (27) capable of adjusting the position along the extension direction of the track (8).

10. A method for quickly replacing the bottom bearing of an old bridge, characterized in that: The following steps are involved: Step 1. Preliminary preparation: the bridge inspection vehicle (1) unfolds the working platform (7) on the bridge deck (13) along the bridge deck (13) longitudinally, installs the track (8), and installs the robotic arm (9) on the track (8); Step 2. The bridge inspection vehicle (1) vertically lowers the working platform (7), track (8), and robotic arm (9) to a predetermined height below the cap beam (28); Step 3. The working platform (7) is rotated 90°, at which time the working platform (7) is laterally parallel to the bridge deck (13), and the operating space is observed, and the working platform (7) is moved close to the bottom support (29) of the bridge; Step 4. After the horizontal telescopic arm (15) of the robotic arm (9) is rotated to be horizontally parallel to the bridge deck (13), the robotic arm (9) is moved to the front end of the working platform (7), and the electric hoist (5) is used to lower the jack (4) from the bridge deck (13) to the support plate (10) of the robotic arm (9); Step 5. The mechanical arm (9) moves the jack (4) laterally along the bridge deck (13) to the installation position, the rotating telescopic column (14) of the mechanical arm (9) lifts the jack (4) to the required installation height, and the horizontal telescopic arm (15) is rotated to move the jack (4) to the vicinity of the bottom support (29) of the bridge; Step 6. After the position adjustment mechanism adjusts the installation position of the jack (4) longitudinally along the bridge deck (13), the horizontal telescopic mechanism (24) pushes out the jack (4) and unloads it onto the cap beam (28); Step 7. Repeat steps 4 to 6 until all the jacks (4) are installed; Step 8. Install the hydraulic pipe (12), operate the pump station (2) to lift the bridge deck (13) to a set height, complete the replacement of the bridge bottom support (29), and then lower the bridge deck (13), thereby completing the replacement of the bridge bottom support (29) here; Step nine. Remove the hydraulic pipe (12), remove the jack (4), and the jack (4) is sequentially transferred by the mechanical arm (9) to the position where the jack (4) is vertically lowered, and the electric hoist (5) lifts the jack (4) to the bridge deck (13) for standby use; Step 10. The mechanical arm (9) is reset, and the working platform (7) is rotated in the opposite direction by 90°. At this time, the working platform (7) is longitudinally flush with the bridge deck (13), and the bridge inspection vehicle (1) is moved to the replacement position of the bridge bottom support (29) of the next pier (30); Step 11. Repeat steps 3 to 10 until all bridge bottom supports (29) are replaced; Step 12. After the working platform (7) is lifted to a predetermined height of the bridge deck (13), the track (8) and the mechanical arm (9) are removed to complete the construction project.

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