Steel trestle segment beam elevation adjusting device

Abstract

The utility model discloses a kind of steel trestle segmental beam elevation adjusting devices, including jack, hydraulic oil pump and intermediate oil storage structure, the jack has multiple, multiple the jack is placed between the support of steel box girder beam bottom and steel box girder symmetrically;Hydraulic oil pump;The oil outlet pipe of the hydraulic oil pump is connected with the intermediate oil storage structure, multiple oil pipes in parallel state are provided on the intermediate oil storage structure, the oil pipe is connected one-to-one with the jack, the intermediate oil storage structure is supplied with oil for the jack by the oil pipe. Using the above device, the elevation adjustment of segmental beam can be quickly and accurately completed, greatly improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a device for adjusting the elevation of segmental beams of a steel trestle bridge. Background Technology

[0002] Currently, when hoisting steel box girders for elevated bridges in China, the elevation adjustment of the steel box girders is mostly done using jacks. During construction, workers place multiple jacks between the bottom of the steel box girder at both ends and the support of the steel box girder, and set up a distance sensor. Then, each jack is connected to an external pump. Following this, with reference to the distance sensor, each jack is driven one by one to lift, thereby completing the elevation adjustment of the steel trestle bridge segment.

[0003] In this method, due to the large number of jacks, adjusting them one by one would inevitably affect the construction period. In addition, although the distance adjustment can be made with reference to the distance sensor, the distance sensor has a certain error. During use, it cannot be guaranteed that the final lifting position of each jack is in the same plane, thus failing to guarantee the accuracy of the elevation adjustment, which in turn affects the stability of the steel trestle bridge segment beam installation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a steel trestle bridge segment beam elevation adjustment device, which can quickly and accurately complete the elevation adjustment of the segment beam, greatly improving work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel trestle bridge segmental beam elevation adjustment device, comprising:

[0006] Jacks, there are multiple jacks, and the multiple jacks are symmetrically placed between the bottom of the steel box girder and the support of the steel box girder;

[0007] Hydraulic oil pump; and

[0008] An intermediate oil storage structure is provided, wherein the oil outlet pipe of the hydraulic oil pump is connected to the intermediate oil storage structure, and multiple oil supply pipes in parallel are provided on the intermediate oil storage structure. Each oil supply pipe is connected to a jack in a corresponding manner, and the intermediate oil storage structure supplies oil to the jack through the oil supply pipes.

[0009] Furthermore, the intermediate oil storage structure includes an oil storage tank, an on / off valve, and a temporary storage cylinder; the oil storage tank is a double-layered tank, which includes an inner tank and an outer tank sleeved outside the inner tank, and the inner tank and the outer tank are connected by a connecting frame, forming a receiving cavity between the inner tank and the outer tank;

[0010] The inner wall of the inner tank is cylindrical. The inner tank has a first through hole, a second connecting hole, and a third connecting hole that are opened sequentially and evenly along the circumference, all of which can connect the inner cavity of the inner tank with the receiving cavity. The angle between the outermost of the first through hole and the third connecting hole and the line connecting the inner tank and the center point of the inner tank is 120°. The oil outlet pipe of the hydraulic oil pump passes through the outer tank and is connected to the first through hole. Multiple oil delivery pipes are connected to the temporary storage cylinder in an associated manner, and the temporary storage cylinder is connected to the third connecting hole. Each oil delivery pipe is equipped with a switch valve.

[0011] The on / off valve is a fan-shaped column with an included angle of 240° between its two sides. The on / off valve is rotatably mounted inside the inner cavity of the inner tank via a rotating shaft, and the outer wall of the on / off valve is rotatably sealed against the inner wall of the inner tank. The end of the rotating shaft extends outside the oil storage tank. Rotating the rotating shaft can cause the outer wall of the on / off valve to block the first through hole, or simultaneously block the first through hole and the second connecting hole.

[0012] Furthermore, it also includes a limiting structure, which is connected between the rotating shaft and the outer tank and can prevent the rotating shaft from rotating arbitrarily.

[0013] Furthermore, the limiting structure includes a limiting plate and a locking screw. The limiting plate is on the rotating shaft and extends along the axial direction of the rotating shaft. The locking screw is threadedly connected to the limiting plate. When the locking screw is rotated, the locking screw can abut against the end of the outer can.

[0014] Furthermore, it also includes a position marking mechanism, which is connected to the rotating shaft and marks the angle and position of the rotating shaft's rotation.

[0015] Furthermore, the position marking mechanism includes a first stop, a second stop, and an intermediate marking line. The first stop and the second stop are spaced apart on the end face of the outer can and extend along the radial direction of the rotating shaft. The angle between the first marking block and the second marking block and the line connecting the center of the rotating shaft is 80°. The intermediate marking line is disposed on the end face of the outer can and is located between the first stop and the second stop.

[0016] The beneficial effects of this utility model are:

[0017] In operation, the aforementioned steel trestle bridge segment beam elevation adjustment device uses a hydraulic pump to pump oil into the intermediate oil storage structure. After passing through this structure, the hydraulic oil flows through various oil pipes into the corresponding jacks, simultaneously driving all jacks to lift the beam. The intermediate oil storage structure buffers, stabilizes, and redistributes the pumped oil, improving the consistency of the lifting distance of all jacks, thereby enhancing the accuracy and efficiency of elevation adjustment.

[0018] Using the above-mentioned device, the elevation adjustment of segmental beams can be completed quickly and accurately, greatly improving work efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of a steel trestle bridge segment beam elevation adjustment device provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 The diagram shows an intermediate oil storage structure in a steel trestle segment beam elevation adjustment device.

[0022] Figure 3 for Figure 1 The diagram shows a steel trestle bridge segment beam elevation adjustment device in which the first through hole is blocked.

[0023] Figure 4 for Figure 1 The diagram shows a steel trestle bridge segment beam elevation adjustment device in which the first and second through holes are simultaneously blocked.

[0024] Figure 5 for Figure 1 The diagram shows the alignment of the limiting plate with the center mark line in a steel trestle bridge segment beam elevation adjustment device.

[0025] Figure 6 for Figure 1 The diagram shows the contact between the limiting plate and the second stop in a steel trestle bridge segment beam elevation adjustment device.

[0026] Figure label:

[0027] 1. Steel box girder; 2. Support frame; 100. Jack; 200. Hydraulic oil pump; 210. Oil outlet pipe; 300. Intermediate oil storage structure; 310. Oil delivery pipe; 311. Switch valve; 320. Oil storage tank; 321. Inner tank; 322. Outer tank; 323. First through hole; 324. Second connecting hole; 325. Third connecting hole; 330. On / off valve; 340. Rotating shaft; 350. Temporary storage cylinder; 400. Limiting structure; 410. Limiting plate; 420. Locking screw; 500. Position marking mechanism; 510. First stop block; 520. Second stop block; 530. Intermediate marking line. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Please see Figures 1 to 3 This utility model provides a steel trestle bridge segment beam elevation adjustment device, including a jack 100, a hydraulic oil pump 200 and an intermediate oil storage structure 300.

[0030] Specifically, there are multiple jacks 100, which are symmetrically positioned between the bottom of the steel box girder 1 and the support 2 of the steel box girder. The oil outlet pipe 210 of the hydraulic oil pump 200 is connected to the intermediate oil storage structure 300, which is equipped with multiple parallel oil delivery pipes 310. Each oil delivery pipe 310 is connected to a corresponding jack 100, and the intermediate oil storage structure 300 supplies oil to the jacks 100 through the oil delivery pipes 310.

[0031] In operation, the hydraulic pump 200 pumps oil into the intermediate oil reservoir 300. After passing through the intermediate oil reservoir 300, the hydraulic oil flows into the corresponding jacks 100 through the various oil delivery pipes 310, thus simultaneously driving all the jacks 100 to lift. The intermediate oil reservoir 300 buffers, stabilizes, and redistributes the pumped oil, thereby improving the consistency of the lifting distance of all the jacks 100, and consequently improving the accuracy of elevation adjustment and increasing efficiency.

[0032] In this embodiment, the intermediate oil storage structure 300 includes an oil storage tank 320, an on / off valve 330, and a temporary storage cylinder 350. The oil storage tank 320 is a double-walled tank, including an inner tank 321 and an outer tank 322 sleeved outside the inner tank 321. The inner tank 321 and the outer tank 322 are connected by a connecting frame, and a receiving cavity is formed between the inner tank 321 and the outer tank 322.

[0033] The inner wall of the inner tank 321 is cylindrical. A first through hole 323, a second through hole 324, and a third through hole 325 are sequentially and evenly spaced along the circumference of the inner tank 321, each connecting the inner cavity of the inner tank 321 to the receiving cavity. The angle between the outermost edges of the first through hole 323 and the third through hole 325 and the line connecting the inner tank 321 to its center point is 120°. The oil outlet pipe 210 of the hydraulic oil pump 200 passes through the outer tank 322 and connects to the first through hole 323. Multiple oil delivery pipes 310 are connected in a related manner to the temporary storage cylinder 350, which is connected to the third through hole 325. Each oil delivery pipe 310 is equipped with a switch valve 311.

[0034] The on / off valve 330 is a fan-shaped column with an included angle of 240° between its two sides. The on / off valve 330 is rotatably mounted inside the inner cavity of the inner tank 321 via a rotating shaft 340, and its outer wall is rotatably and sealingly abutting against the inner wall of the inner tank 321. The end of the rotating shaft 340 extends outside the oil storage tank 320. Rotating the rotating shaft 340 can cause the outer wall of the on / off valve 330 to block the first through hole 323, or simultaneously block both the first through hole 323 and the second through hole 324.

[0035] In this embodiment, the pressure balance of the hydraulic oil is divided into four stages:

[0036] First stage, oil filling stage:

[0037] Please refer to Figure 2 In the initial state, the required lifting height of the jacks 100 is calculated, along with the capacity of the inner cavity and receiving cavity of the inner tank 321, to determine the total amount of hydraulic oil to be pumped in. At this time, the first through hole 323, the second through hole 324, and the third through hole 325 are all open. Hydraulic oil flows into the inner cavity of the inner tank 321 through the first through hole 323. Simultaneously, hydraulic oil flows into the receiving cavity through the second through hole 324, which connects to the inner cavity of the inner tank 321, and into the temporary storage cylinder 350 through the third through hole 325. The temporary storage cylinder 325 then simultaneously pumps the hydraulic oil into multiple jacks 100. When the total injected hydraulic oil reaches the calculated amount, the rotating shaft 340 is rotated 40° clockwise, thus switching to the desired position. Figure 3 The state shown causes the on / off valve 330 to block the first through hole 323, preventing hydraulic oil from continuing to be injected.

[0038] Phase Two, Initial Equilibrium Phase:

[0039] See Figure 3 After the first through hole 323 is blocked at this stage, the hydraulic oil injection stops. The receiving cavity, the inner tank 321, and all the jacks 100 are in a connected state. The hydraulic oil in the multiple jacks 100 is balanced through the receiving cavity and the inner tank 321. The receiving cavity and the inner tank 321 play the role of balancing the excessive hydraulic oil at this time, so that the pressure of the multiple jacks 100 reaches a preliminary balance. At this time, the pressure of the hydraulic oil in the jacks 100 is P1.

[0040] The third stage, the rebalancing stage:

[0041] After the initial balancing phase, rotate the 340 axis clockwise by 40° again (see...). Figure 4This causes the on / off valve 330 to simultaneously block and close the first through hole 323 and the second through hole 324. At this time, each jack 100 is in a connected state with the inner cavity of the inner tank 321. The hydraulic oil can flow again between the jack 100 and the inner cavity of the inner tank 321 to balance the pressure difference again and improve the synchronization and stability of all jacks 100. At this time, the pressure of the hydraulic oil in each jack 100 becomes P2.

[0042] Phase Four, Final Stabilization Phase:

[0043] After the second balancing phase, close the switch valves 311 on all connecting pipes 520 to disconnect all jacks 100. At this time, the air pressure inside the jacks 100 finally becomes P3 and remains constant. The jacks 100 reach the final balance, thus ensuring the synchronization and stability of all jacks 100.

[0044] Through the intermediate oil storage structure 300, the fluid inside the jack 100 can gradually reach pressure balance, thereby gradually reducing the pressure and lifting distance difference between each jack 100, and thus achieving stability and synchronization within each jack 100.

[0045] In a preferred embodiment, the device further includes a limiting structure 400. The limiting structure 400 is connected between the rotating shaft 340 and the outer tank 322, and can prevent the rotating shaft 340 from rotating arbitrarily.

[0046] Specifically, the limiting structure 400 includes a limiting plate 410 and a locking screw 420. The limiting plate 410 is on the rotating shaft 340 and extends along the axial direction of the rotating shaft 340. The locking screw 420 is threaded onto the limiting plate 410. By rotating the locking screw 420, the locking screw 420 can abut against the end of the outer can 322.

[0047] When no pressure adjustment is required, the limiting plate 410 is fixed to the outer tank 322 by the locking screw 420, which in turn fixes the rotating shaft 340 and the on / off valve 330. When adjustment is required, simply loosen the locking screw 420.

[0048] In a preferred embodiment, the device further includes a position marking mechanism 500, which is connected to the rotating shaft 340 and marks the angle and position of the rotation of the rotating shaft 340.

[0049] Specifically, the position marking mechanism 500 includes a first stop 510, a second stop 520, and a middle marking line 530. The first stop 510 and the second stop 520 are spaced apart on the end face of the outer can 322 and extend along the radial direction of the rotating shaft 340. The angle between the first marking block and the second marking block and the center line of the rotating shaft 340 is 80°. The middle marking line 530 is disposed on the end face of the outer can 322 and is located between the first stop 510 and the second stop 520.

[0050] When the first through hole 323, the second through hole 324, and the third through hole 325 are all open, the limiting plate 410 abuts against the first stop block 510 (see...). Figure 1 When the shaft 340 rotates 40° clockwise (see...), Figure 5 When the limiting plate 410 is aligned with the center mark line 530, the first through hole 323 is closed, and the second through hole 324 and the third through hole 325 are open; after rotating 80° clockwise around the rotating shaft 340 (see...), Figure 6 When the limiting plate 410 abuts against the second stop 520, the first through hole 323 and the second through hole 324 are blocked and closed at the same time.

[0051] By limiting the first stop 510 and the second stop 520, the on / off status of the first through hole 323, the second through hole 324 and the third through hole 325 can be conveniently and accurately realized.

[0052] How to use the above-mentioned steel trestle bridge segment beam elevation adjustment device:

[0053] In use, first place multiple jacks 100 symmetrically between the bottom of the steel box girder 1 at both ends and the support 2 of the steel box girder. Then, the hydraulic oil pump 200 pumps oil into the intermediate oil storage structure 300. After the hydraulic oil enters the intermediate oil storage structure 300, and after stabilizing the pressure for a period of time, the rotating shaft 340 rotates 40°. At this time, the oil flows into the corresponding jacks 100 through each oil supply pipe 310, which can drive all the jacks 100 to lift simultaneously. After the rotation limit plate 410 is aligned with the middle mark line 530, and after stabilizing the pressure for a period of time again, rotate the rotating shaft 340 40° again. At this time, the limit plate 410 abuts against the second stop 520. After stabilizing the pressure for a period of time again, close the switch valves 311 on all the oil supply pipes 310 to complete the elevation adjustment of the segment beam. Finally, the position of the segment beam is set.

[0054] Using the above-mentioned device, the elevation adjustment of segmental beams can be completed quickly and accurately, greatly improving work efficiency.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A device for adjusting the elevation of segmental beams of a steel trestle bridge, characterized in that, include: Jacks, there are multiple jacks, and the multiple jacks are symmetrically placed between the bottom of the steel box girder and the support of the steel box girder; Hydraulic oil pump; and An intermediate oil storage structure is provided, wherein the oil outlet pipe of the hydraulic oil pump is connected to the intermediate oil storage structure, and multiple oil supply pipes in parallel are provided on the intermediate oil storage structure. Each oil supply pipe is connected to a jack in a corresponding manner, and the intermediate oil storage structure supplies oil to the jack through the oil supply pipes.

2. The steel trestle bridge segment beam elevation adjustment device according to claim 1, characterized in that, The intermediate oil storage structure includes an oil storage tank, an on / off valve, and a temporary storage cylinder; the oil storage tank is a double-layered tank, which includes an inner tank and an outer tank sleeved outside the inner tank, and the inner tank and the outer tank are connected by a connecting frame, forming a receiving cavity between the inner tank and the outer tank; The inner wall of the inner tank is cylindrical. The inner tank has a first through hole, a second connecting hole, and a third connecting hole that are opened sequentially and evenly along the circumference, all of which can connect the inner cavity of the inner tank with the receiving cavity. The angle between the outermost of the first through hole and the third connecting hole and the line connecting the inner tank and the center point of the inner tank is 120°. The oil outlet pipe of the hydraulic oil pump passes through the outer tank and is connected to the first through hole. Multiple oil delivery pipes are connected to the temporary storage cylinder in an associated manner, and the temporary storage cylinder is connected to the third connecting hole. Each oil delivery pipe is equipped with a switch valve. The on / off valve is a fan-shaped column with an included angle of 240° between its two sides. The on / off valve is rotatably mounted inside the inner cavity of the inner tank via a rotating shaft, and the outer wall of the on / off valve is rotatably sealed against the inner wall of the inner tank. The end of the rotating shaft extends outside the oil storage tank. Rotating the rotating shaft can cause the outer wall of the on / off valve to block the first through hole, or simultaneously block the first through hole and the second connecting hole.

3. The steel trestle bridge segment beam elevation adjustment device according to claim 2, characterized in that, It also includes a limiting structure, which is connected between the rotating shaft and the outer tank and can prevent the rotating shaft from rotating arbitrarily.

4. The steel trestle bridge segment beam elevation adjustment device according to claim 3, characterized in that, The limiting structure includes a limiting plate and a locking screw. The limiting plate is on the rotating shaft and extends along the axial direction of the rotating shaft. The locking screw is threaded onto the limiting plate. When the locking screw is rotated, it abuts against the end of the outer can.

5. The steel trestle bridge segment beam elevation adjustment device according to claim 2 or 4, characterized in that, It also includes a position marking mechanism, which is connected to the rotating shaft and marks the angle and position of the rotating shaft.

6. The steel trestle bridge segment beam elevation adjustment device according to claim 5, characterized in that, The position marking mechanism includes a first stop, a second stop, and a middle marking line. The first stop and the second stop are spaced apart on the end face of the outer can and extend along the radial direction of the rotating shaft. The angle between the first marking block and the second marking block and the line connecting the center of the rotating shaft is 80°. The middle marking line is disposed on the end face of the outer can and is located between the first stop and the second stop.

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