Horizontal pushing device for rigid frame bridge

Abstract

The utility model belongs to the technical field of bridge construction, and discloses a rigid frame bridge horizontal pushing device which comprises a bottom plate, a pair of symmetrically-arranged fixing strips are fixed to the two sides of the bottom plate, a pair of symmetrically-arranged fixing plates are fixed to the bottom plate, and the two fixing plates are located at the two ends of the fixing strips respectively. The two first sliding blocks are symmetrically placed relative to the symmetrical plane of the two fixing plates, the first sliding blocks are clamped between the two fixing strips in a sliding mode, and driving units are arranged on the fixing plates and used for driving the two first sliding blocks to be close to or away from each other; the number of the mounting plates is two, the two mounting plates are fixed to the upper ends of the two first sliding blocks correspondingly, the mounting plates are located above the fixing strips, telescopic air cylinders which are vertically and upwards placed are fixed to the upper end faces of the mounting plates correspondingly, and top plates are fixed to driving rods at the output ends of the telescopic air cylinders correspondingly; and continuous pushing operation can be carried out on the beam body, so that the pushing construction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge construction, and in particular relates to a horizontal jacking device for a rigid frame bridge. Background Art

[0002] At present, most of the existing bridge jacking construction is carried out by hydraulic jacks. During the bridge construction process, the construction workers will set a horizontally placed hydraulic cylinder and a vertically placed hydraulic cylinder on the bridge pier or temporary pier. The vertically placed hydraulic cylinder is set in the slideway, and the horizontally placed hydraulic cylinder is used to drive the vertically placed hydraulic cylinder to move back and forth; when pushing, firstly, one end of the bridge is lifted or jacked up by the vertically placed hydraulic cylinder to separate it from the supporting point, and then the horizontally placed hydraulic cylinder is used to push the vertically placed hydraulic cylinder and the beam body to move. After each pushing, the horizontally placed hydraulic cylinder needs to be retracted and reset to facilitate the next pushing operation;

[0003] When the displacement of the beam body to be pushed is large, it needs to be completed in multiple pushing operations. However, the horizontally placed hydraulic cylinder of the pushing device in the prior art needs to be retracted and reset after each pushing, resulting in poor continuity of the pushing operation and low construction efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a horizontal jacking device for a rigid frame bridge, which solves the problems of poor continuity of jacking operation and low construction efficiency in the prior art.

[0005] The purpose of this disclosure can be achieved through the following technical solutions:

[0006] A horizontal jacking device for a rigid frame bridge, comprising:

[0007] A bottom plate, a pair of symmetrically placed fixing strips are fixed on both sides of the bottom plate, a pair of symmetrically placed fixing plates are fixed on the bottom plate, and the two fixing plates are respectively located at both ends of the fixing strips;

[0008] The first sliders are two sliders symmetrically placed about the symmetry plane of the two fixing plates, and the first sliders are both slidably connected between the two fixing bars. The fixing plates are provided with a driving unit, and the driving unit is used to drive the two first sliders to move closer to or away from each other;

[0009] Mounting plates, there are two mounting plates, which are respectively fixed to the upper ends of the two first sliding blocks, and the mounting plates are located above the fixing bars. The upper end surfaces of the mounting plates are fixed with telescopic cylinders placed vertically upward, and the driving rods at the output ends of the telescopic cylinders are fixed with top plates.

[0010] The principle and effect of the above technical solution are as follows:

[0011] By driving the reciprocating movement of the two first sliders to move away from or close to each other through the driving unit, and cooperating with the alternating change of the working states of the telescopic cylinders on the two mounting plates, and using the two top plates alternately, the continuous jacking operation of the beam body can be realized without interruption, thereby improving the efficiency of the jacking construction.

[0012] The driving unit includes a screw rod arranged between two fixed bars. The screw rod is coaxially placed with the fixed bars. The two ends of the screw rod are respectively rotatably connected to the two fixing plates. And the screw threads at both ends of the screw rod located at both ends of the symmetric plane of the two first sliders have opposite helical directions. The first sliders are all sleeved on the screw rod and are threadedly connected thereto;

[0013] The driving unit further includes a rotating motor installed on any one of the fixing plates. The output end of the rotating motor is connected to one end of the screw rod;

[0014] The telescopic cylinders on any one of the mounting plates are all arranged as two symmetrically placed ones, and the two telescopic cylinders are arranged along the direction perpendicular to the fixed bar. The bottoms of the telescopic cylinders are all fixed to the mounting plate, and the driving rods at the output ends of the telescopic cylinders are all fixed to the top plate;

[0015] Sliding rails placed coaxially are fixed to the upper ends of the fixed bars. A pair of second sliders are fixed to the lower ends of the mounting plates. The two second sliders correspond to the two sliding rails one by one, and the second sliders are all slidably connected to the corresponding sliding rails;

[0016] A detachable connection is provided between the driving rod at the output end of the telescopic cylinder and the top plate;

[0017] A plurality of rubber strips are fixed to the upper ends of the top plates, and the plurality of rubber strips are uniformly distributed along the direction perpendicular to the screw rod.

[0018] The explanations of the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0019] Connection: It refers to the process of connecting two separated profiles or parts into a complex part or component by fasteners such as screws, bolts and rivets.

[0020] Sliding connection: Two objects are in contact but not fixed, and they can slide relative to each other.

[0021] Advantages of the present disclosure:

[0022] 1. By driving the reciprocating movement of the two first sliders to move away from or close to each other through the driving unit, and cooperating with the alternating change of the working states of the telescopic cylinders on the two mounting plates, and using the two top plates alternately, the continuous jacking operation of the beam body can be realized without interruption, thereby improving the efficiency of the jacking construction;

[0023] 2. Through the arrangement of the rubber strips, the damage to the pressing plate or the beam body during the jacking process is reduced, and at the same time, the anti-slip performance during jacking is improved. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is the overall structural schematic diagram of the embodiments of the present disclosure;

[0026] Figure 2 is the partial structural schematic diagram of the embodiments of the present disclosure;

[0027] Figure 3 is the partial structural schematic diagram at the telescopic cylinder of the embodiments of the present disclosure. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0029] Herein, in combination with Figures 1 to 3 to describe an embodiment of a horizontal jacking device for a rigid frame bridge. Specifically, the horizontal jacking device for a rigid frame bridge is configured as a split structure, which has six components including a fixed strip 2, a first slider 4, a driving unit, a mounting plate 5, a telescopic cylinder 6, and a top plate 7. By driving the reciprocating movement of the two first sliders 4 to move away from or close to each other by the driving unit, and cooperating with the alternating change of the working state of the telescopic cylinders 6 on the two mounting plates 5, and using the two top plates 7 alternately, continuous and uninterrupted jacking operations on the beam body can be realized, thereby improving the efficiency of jacking construction.

[0030] Please refer to Figures 1 to 3 , a horizontal jacking device for a rigid frame bridge, comprising:

[0031] A bottom plate 1, with a pair of symmetrically placed fixed strips 2 fixed on both sides of the bottom plate 1, and a pair of symmetrically placed fixing plates 3 fixed on the bottom plate 1, and the two fixing plates 3 are respectively located at both ends of the fixed strip 2;

[0032] First sliders 4, with two first sliders 4 symmetrically placed with respect to the symmetric plane of the two fixing plates 3, and the first sliders 4 are all slidably clamped between the two fixed strips 2. A driving unit is provided on the fixing plate 3, and the driving unit is used to drive the two first sliders 4 to approach or move away from each other;

[0033] The mounting plates 5, with two in number, are respectively fixed to the upper ends of the two first sliders 4, and the mounting plates 5 are located above the fixing bars 2. Vertically upward telescopic cylinders 6 are fixed to the upper end faces of the mounting plates 5, and top plates 7 are fixed to the driving rods at the output ends of the telescopic cylinders 6;

[0034] The bottom plate 1 is used to be placed on the bridge pier. The bottom plate 1 should have sufficient strength and wear resistance to ensure that it is not easily damaged or deformed during long-term use, and the lower end face of the bottom plate 1 should fit smoothly against the upper end face of the bridge pier.

[0035] The telescopic cylinders 6 are used to increase the thrust for jacking up the beam body. Preferably, the telescopic cylinders 6 in this embodiment can be hydraulic cylinders. Hydraulic cylinders can be divided into two types: single-acting and double-acting, and have characteristics such as strong load-bearing capacity, stable operation, and flexible operation.

[0036] When the top plate 7 performs the jacking operation, it is in extrusion contact with the lower end face of the beam body. The top plate 7 should have sufficient strength to avoid fracture, breakage, etc. of the top plate 7 during the jacking process. The preferred material for the top plate 7 is steel, which usually has high strength and stability.

[0037] For the convenience of description of this embodiment, the beam body that has been positioned and installed is named the first beam body, and the beam body to be jacked towards the first beam body is named the second beam body;

[0038] In the initial state, the two first sliders 4 are in a state of moving away from each other; the bottom plate 1 is placed on the bridge pier, and the top plates 7 are both located below the second beam body, so that the fixing bars 2 and the second beam body are placed coaxially;

[0039] Step 1: First, make the driving rods of the telescopic cylinders 6 on the mounting plates 5 close to the first beam body in a contracted state, and make the driving rods of the telescopic cylinders 6 on the mounting plates 5 away from the first beam body push the top plates 7 to move upward and jack up the second beam body; then start the driving unit to drive the two first sliders 4 to move closer to each other. At this time, the pressing plates at the end away from the first beam body perform the jacking operation on the second beam body;

[0040] Step 2: When the two first sliders 4 move to the end where they are close to each other, change the working states of the corresponding telescopic cylinders 6 on the two mounting plates 5, so that the top plates 7 at the end close to the first beam body jack up the second beam body, while the top plates 7 at the end away from the first beam body are separated from the second beam body, and then drive the two first sliders 4 to move away from each other through the driving unit. At this time, the pressing plates at the end close to the first beam body perform the jacking operation on the second beam body;

[0041] Step 3: When the two first sliders 4 move to the end where they are away from each other, continuously repeat Step 1 and Step 2;

[0042] By driving the reciprocating movement of the two first sliders 4 to move away from or close to each other, and cooperating with the alternating change of the working states of the telescopic cylinders 6 on the two mounting plates 5, and using the two top plates 7 alternately, the continuous jacking operation of the beam body can be realized without interruption, thereby improving the efficiency of the jacking construction.

[0043] In order to facilitate the control of the mutual approach or separation of the two first sliders 4, the driving unit includes a screw rod 81 arranged between the two fixed bars 2. The screw rod 81 is coaxially placed with the fixed bars 2. The two ends of the screw rod 81 are respectively rotatably connected to the two fixing plates 3. And the thread helix directions of the screw rod 81 at both ends located at the two ends of the symmetry plane of the two first sliders 4 are opposite. The first sliders 4 are all sleeved on the screw rod 81 and are threadedly connected thereto. Through the limitation of the first sliders 4 by the fixed bars 2, when the screw rod 81 is rotated, the first sliders 4 can be driven to perform screw transmission, and the arrangement of the opposite thread helix directions at both ends of the screw rod 81 realizes the purpose of controlling the mutual approach or separation of the two first sliders 4.

[0044] In order to facilitate the automatic control of the rotation of the screw rod 81, the driving unit further includes a rotation motor 82 installed on any one of the fixing plates 3. The output end of the rotation motor 82 is connected to one end of the screw rod 81. The rotation of the screw rod 81 is controlled by the rotation motor 82, and by changing the rotation direction of the output end of the rotation motor 82, the change of the two moving states of the two first sliders 4 moving closer to or away from each other is realized.

[0045] In order to facilitate jacking up the beam body for jacking and improve the stability of the support at the same time, the telescopic cylinders 6 on any one of the mounting plates 5 are both arranged symmetrically as two, and the two telescopic cylinders 6 are arranged along the direction perpendicular to the fixed bars 2. The bottoms of the telescopic cylinders 6 are both fixed to the mounting plates 5, and the driving rods at the output ends of the telescopic cylinders 6 are both fixed to the top plates 7.

[0046] In order to improve the guiding property during the movement and disperse the pressure on the mounting plate 5 when jacking up the beam body, slide rails 9 placed coaxially are fixed to the upper ends of the fixed bars 2. A pair of second sliders 10 are fixed to the lower ends of the mounting plates 5. The two second sliders 10 correspond to the two slide rails 9 one by one, and the second sliders 10 are all slidably connected to the corresponding slide rails 9. Through the arrangement of the slide rails 9 and the second sliders 10, the guiding property during the movement is improved, and the pressure on the mounting plate 5 when jacking up the beam body is dispersed.

[0047] A detachable connection is provided between the driving rod at the output end of the telescopic cylinder 6 and the top plate 7. Preferably, the driving rod and the top plate 7 can be connected by bolts, which is convenient for replacing the damaged top plate 7 and can also be convenient for replacing top plates 7 of different specifications according to the size of the beam body.

[0048] A plurality of rubber strips 11 are fixedly arranged at the upper ends of the top plate 7, and the plurality of rubber strips 11 are uniformly distributed along a direction perpendicular to the screw rod 81; the rubber strips 11 are preferably made of nitrile rubber, which has excellent oil resistance and wear resistance, and at the same time has a certain elasticity, reducing damage to the pressing plate or the beam body during the jacking process, and at the same time improving the anti-slip performance during jacking.

[0049] In the description of the present specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and the description in the specification only illustrate the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure will have various changes and improvements, and these changes and improvements all fall within the scope of the present disclosure claimed.

Claims

1. A horizontal pushing device for a rigid frame bridge, characterized in that: include: A bottom plate (1), a pair of symmetrically placed fixing strips (2) are fixed on both sides of the bottom plate (1), a pair of symmetrically placed fixing plates (3) are fixed on the bottom plate (1), and the two fixing plates (3) are respectively located at two ends of the fixing strips (2); First sliding blocks (4), the first sliding blocks (4) are two symmetrically placed about the symmetry plane of the two fixing plates (3), the first sliding blocks (4) are both slidably clamped between the two fixing bars (2), and a driving unit is provided on the fixing plate (3), and the driving unit is used to drive the two first sliding blocks (4) to move closer to or farther from each other; The mounting plates (5) are two in number, the two mounting plates (5) are respectively fixed to the upper ends of the two first sliding blocks (4), and the mounting plates (5) are located above the fixing strip (2). The upper end surfaces of the mounting plates (5) are fixed with telescopic cylinders (6) placed vertically upward, and the driving rods at the output ends of the telescopic cylinders (6) are fixed with top plates (7).

2. The horizontal pushing device for a rigid frame bridge according to claim 1 is characterized in that: The driving unit comprises a screw rod (81) arranged between two fixing bars (2), the screw rod (81) and the fixing bar (2) being coaxially arranged, two ends of the screw rod (81) being rotatably connected to two fixing plates (3) respectively, and the screw threads of the screw rod (81) at two ends of the symmetry plane of the two first sliding blocks (4) having opposite spiral directions, and the first sliding blocks (4) are sleeved on the screw rod (81) and threadedly connected thereto.

3. The horizontal pushing device for a rigid frame bridge according to claim 2 is characterized in that: The driving unit further comprises a rotating motor (82) mounted on any one of the fixing plates (3), and an output end of the rotating motor (82) is connected to one end of the screw rod (81).

4. The horizontal pushing device for a rigid frame bridge according to claim 3 is characterized in that: The telescopic cylinders (6) on any mounting plate (5) are arranged in two symmetrical positions, and the two telescopic cylinders (6) are arranged in a direction perpendicular to the fixing strip (2), the bottoms of the telescopic cylinders (6) are fixed to the mounting plate (5), and the driving rods at the output ends of the telescopic cylinders (6) are fixed to the top plate (7).

5. The horizontal pushing device for a rigid frame bridge according to claim 4 is characterized in that: A coaxially placed slide rail (9) is fixed to the upper end of the fixing bar (2), and a pair of second slide blocks (10) is fixed to the lower end of the mounting plate (5). The two second slide blocks (10) correspond to the two slide rails (9) one by one, and the second slide blocks (10) are slidably connected to the corresponding slide rails (9).

6. The horizontal pushing device for a rigid frame bridge according to claim 5, characterized in that: The driving rod at the output end of the telescopic cylinder (6) and the top plate (7) are both arranged to be detachably connected.

7. The horizontal pushing device for a rigid frame bridge according to claim 6, characterized in that: A plurality of rubber strips (11) are fixed to the upper end of the top plate (7), and the plurality of rubber strips (11) are evenly distributed in a direction perpendicular to the screw rod (81).

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