Jacking device for replacing bridge support

Abstract

The utility model relates to the technical field of bridge maintenance and reinforcement, in particular to a jacking device for replacing a bridge support, which comprises hydraulic jacking equipment, a bearing base and a carrying pole rod, the bearing bases are arranged on the two sides of a pier of a bridge, and the hydraulic jacking devices are arranged on the bearing bases. The two sides of the hydraulic jacking equipment are each provided with at least one carrying pole rod, the two ends of each carrying pole rod are fixedly connected with bearing bases on the two sides of a bridge pier respectively, and the carrying pole rods are located in gaps between a bridge body of a bridge and the bridge pier and make contact with the surface of the bridge pier. The device is simple, is suitable for a bridge without support padstone, and does not affect normal traffic in the current situation in the jacking process.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge maintenance and reinforcement, in particular to a jacking device for bridge bearing replacement. Background Art

[0002] As an important force transmission component connecting the upper and lower structures of a bridge, the bearing shoulders the heavy responsibility of transmitting various loads borne by the bridge. However, during long-term use, under the combined influence of environmental erosion, heavy traffic pressure, and natural aging, etc., various damages, aging, and even failures will inevitably occur to the bridge bearings. This not only seriously threatens the normal use function of the bridge but also poses a huge hidden danger to traffic safety. Therefore, the overall replacement of bridge bearings is extremely important. However, the traditional bearing replacement method is to use a series of lifting or jacking equipment to jack up the beam slab on the top surface of the pier or on a pre-set support, and then replace the bearing. This method requires a lot of mechanical equipment, has low construction efficiency, complex operation, difficult precision control, and a greater impact on traffic. In addition, some bridges do not have bearing pads, and the bridge bearings are placed in a narrow space, resulting in the inability to use conventional PLC hydraulic jacking equipment for jacking. Therefore, it is very necessary to seek a replacement device for portable bridge bearings without bearing pads. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art. The utility model provides a jacking device for bridge bearing replacement, which has a simple structure, is applicable to the replacement of bridge bearings without bearing pads, and does not affect the normal passage of the current traffic during the jacking process.

[0004] To solve the above problems, the utility model proposes a jacking device for bridge bearing replacement, including a hydraulic jacking device, a load-bearing base, and a cross bar;

[0005] The load-bearing bases are arranged on both sides of the bridge pier, and the hydraulic jacking device is arranged on the load-bearing base; at least one cross bar is respectively arranged on both sides of the hydraulic jacking device, both ends of the cross bar are fixedly connected with the load-bearing bases on both sides of the pier, and the cross bar is located in the gap between the beam body of the bridge and the pier and contacts the surface of the pier.

[0006] As an improvement of the above technical solution, the load-bearing base includes a support triangular seat and a mounting plate;

[0007] The support triangular seats are respectively arranged on the front side and the rear side of the hydraulic jacking device, the support triangular seats are fixedly connected with the pier, the end of the cross bar is fixedly connected with the support triangular seat, the mounting plate is fixedly connected between the two support triangular seats, and the hydraulic jacking device is fixedly arranged on the mounting plate.

[0008] As an improvement of the above technical solution, placing grooves are provided on both sides of the mounting plate of the supporting triangular seat, a placing plate is fixedly connected between the two placing grooves, and the end of the carrying pole is fixedly connected to the placing plate.

[0009] As an improvement of the above technical solution, the hydraulic jacking device includes a jacking device body and a device fixing seat;

[0010] A fixing groove is provided on the device fixing seat, the jacking device body is fixedly arranged in the fixing groove, a plurality of clamping rods are arranged at equal intervals along the outer periphery of the jacking device body, and the clamping rods are hinged to the device fixing seat; the clamping rod includes a rod main body and a positioning member hinged to the upper end of the rod main body, the positioning member extends downward from the hinged position and is applied with a force to rotate in a direction close to the center line of the fixing groove, and the positioning member is fixedly limited to the jacking device body.

[0011] As an improvement of the above technical solution, a torsion spring is provided at the hinge joint between the rod main body and the positioning member, and the torsion spring can apply a force to make the positioning member rotate in the direction of the center line of the fixing groove.

[0012] As an improvement of the above technical solution, a positioning member moving groove is provided on the outer side wall of the jacking device body, the positioning member can extend into the positioning member moving groove and can be fixedly limited to the positioning member moving groove.

[0013] As an improvement of the above technical solution, a backing plate is provided on the pushing end of the hydraulic jacking device.

[0014] As an improvement of the above technical solution, the carrying pole is made of chrome steel.

[0015] As an improvement of the above technical solution, a plurality of anchor bolts are provided on one side of the load-bearing base, and the load-bearing base is fixedly connected to the bridge pier through the anchor bolts.

[0016] As an improvement of the above technical solution, the anchor bolts are fixed chemical anchor bolts with a grade not lower than M20.

[0017] Implementing the present utility model has the following beneficial effects:

[0018] In the jacking device of the present utility model, a carrying pole is arranged in the gap between the beam body and the bridge pier. Both ends of the carrying pole are fixedly connected to the load-bearing bases arranged on both sides of the bridge pier, and the carrying pole is in contact with the surface of the bridge pier. Compared with the prior art, it can evenly disperse the load of bridge jacking, ensure the force balance, and further enable the hydraulic jacking device arranged on the side of the bridge pier to smoothly lift the beam body. First, it is applicable to replacing bridge bearings in a narrow space. Second, the bridge deck can normally pass during the replacement process. Description of the Drawings

[0019] Figure 1 is the front view of the jacking device according to an embodiment of the present utility model;

[0020] Figure 2 is the side view of the jacking device according to an embodiment of the present utility model;

[0021] Figure 3 is the front view of the hydraulic jacking equipment according to an embodiment of the present utility model. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Refer to Figure 1 and Figure 2 As shown, the embodiment of the present utility model provides a jacking device for bridge bearing replacement, which includes a hydraulic jacking equipment 1, a load-bearing base 2 and a cross bar 3.

[0024] Specifically, the load-bearing bases 2 are arranged on both sides of the bridge pier 1', and the hydraulic jacking equipment 1 is arranged on the load-bearing bases 2; at least one cross bar 3 is respectively arranged on both sides of the hydraulic jacking equipment 1, and both ends of the cross bar 3 are fixedly connected to the load-bearing bases 2 on both sides of the bridge pier 1', and the cross bar 3 is located in the gap between the beam body 2' and the bridge pier 1' of the bridge and contacts the surface of the bridge pier 1'.

[0025] In the embodiment of the present utility model, a cross bar 3 is arranged in the gap between the beam body 2' and the bridge pier 1', and both ends of the cross bar 3 are fixedly connected to the load-bearing bases 2 arranged on both sides of the bridge pier 1', and the cross bar 3 contacts the surface of the bridge pier 1'. Compared with the prior art, it can evenly disperse the load of bridge jacking, ensure the force balance, and further enable the hydraulic jacking equipment 1 arranged on the side of the bridge pier 1' to smoothly lift the beam body 2'. First, it is applicable to the replacement of bridge bearings in a narrow space. Second, the bridge deck can normally pass during the replacement process.

[0026] Preferably, the load-bearing base 2 includes a support triangular seat 21 and a mounting plate 22;

[0027] The support triangular seats 21 are respectively arranged on the front side and the rear side of the hydraulic jacking equipment 1, the support triangular seats 21 are fixedly connected to the bridge pier 1', the end of the cross bar 3 is fixedly connected to the support triangular seat 21, the mounting plate 22 is fixedly connected between the two support triangular seats 21, and the hydraulic jacking equipment 1 is fixedly arranged on the mounting plate 22. The cooperation between the support triangular seat 21 and the cross bar 3 can evenly disperse the pressure of the hydraulic jacking equipment 1 on the front and rear sides.

[0028] Preferably, the supporting triangle seat 21 is provided with placement grooves 23 on both sides of the mounting plate 22, a placement plate 24 is fixedly connected between the two placement grooves 23, and the end of the shoulder pole 3 is fixedly connected to the placement plate 24. Multiple fixing points are provided for the end of the shoulder pole 3, thereby improving the installation strength of the shoulder pole 3. Specifically, the shoulder pole 3 is mechanically connected to the placement plate 24 by M14 12.9 grade bolts.

[0029] Preferably, the hydraulic jacking device 1 comprises a jacking device body 11 and a device fixing seat 12;

[0030] The equipment fixing seat 11 is provided with a fixing groove 14, and the lifting equipment body 11 is fixed in the fixing groove 14. A plurality of clamping rods are provided at equal intervals along the outer circumference of the lifting equipment body 11, and the clamping rods are hinged to the equipment fixing seat 12; the clamping rods include a rod body 15, and a positioning member 16 hinged to the upper end of the rod body 15, the positioning member 16 extends downward from the hinge position, and is applied with a force to rotate toward the center line of the fixing groove 14, and the positioning member 16 is fixed to the lifting equipment body 11 in a limited position. The structure of the hydraulic lifting equipment 1 is improved, and the lifting equipment body 11 is reinforced to prevent the lifting equipment body 11 from sliding sideways, shaking, etc., and to avoid damage to the lifting equipment body 11, and the cost is low.

[0031] Preferably, a torsion spring 17 is provided at the hinge of the rod body 15 and the positioning member 16, and the torsion spring 17 can apply a force to rotate the positioning member 16 toward the center line direction of the fixing groove 14. The cooperation between the fixing groove 14 and the positioning member 16 enables the lifting device body 11 to be stably fixed at the center of the fixing groove 14, preventing the lifting device body 11 from sliding sideways during use.

[0032] More preferably, the outer side wall of the lifting device body 11 is provided with a positioning member movable groove 18 , and the positioning member 16 can extend into the positioning member movable groove 18 and can be fixed in position with the positioning member movable groove 18 .

[0033] Preferably, a pad 13 is provided on the pushing end of the hydraulic jacking device 1. The pad 13 can disperse the pressure of the pushing end of the hydraulic jacking device 1 and protect the hydraulic jacking device 1 when it is started.

[0034] Preferably, the shoulder pole 3 is made of chrome steel. Specifically, two high-strength treated chrome steels are placed on the bridge pier 1' as shoulder poles 3, with specific specifications of 3*4cm, a single pole weighing about 14kg, and a total of about 28kg.

[0035] Preferably, a plurality of anchor bolts are provided on one side of the load-bearing base 2, and the load-bearing base 2 is fixedly connected to the bridge pier 1' through the anchor bolts. More preferably, the anchor bolts are fixed chemical anchor bolts with a grade not lower than M20.

[0036] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A jacking device for bridge bearing replacement, characterized in that, Includes hydraulic jacking equipment, load-bearing base and shoulder pole; The load-bearing base is provided on both sides of the bridge pier, and the hydraulic jacking equipment is provided on the load-bearing base; at least one shoulder pole is provided on both sides of the hydraulic jacking equipment, and the two ends of the shoulder pole are respectively fixedly connected to the load-bearing base on both sides of the pier, and the shoulder pole is located in the gap between the beam body and the pier of the bridge, and contacts with the surface of the pier.

2. The jacking device according to claim 1, wherein The load-bearing base includes a supporting triangle and a mounting plate; The front and rear sides of the hydraulic jacking equipment are respectively provided with the supporting triangle seats, the supporting triangle seats are fixedly connected to the bridge piers, the ends of the shoulder poles are fixedly connected to the supporting triangle seats, the mounting plate is fixedly connected between the two supporting triangle seats, and the hydraulic jacking equipment is fixedly arranged on the mounting plate.

3. The jacking device according to claim 2, characterized in that, The supporting triangle seat is provided with placement grooves on both sides of the mounting plate, a placement plate is fixedly connected between the two placement grooves, and the end of the shoulder pole is fixedly connected to the placement plate.

4. The jacking device according to claim 1, wherein, The hydraulic jacking equipment comprises a jacking equipment body and an equipment fixing seat; A fixing groove is provided on the equipment fixing seat, and the jacking equipment body is fixed in the fixing groove. A plurality of clamping rods are provided at equal intervals along the outer circumference of the jacking equipment body, and the clamping rods are hinged to the equipment fixing seat; the clamping rod includes a rod body, and a positioning piece hinged to the upper end of the rod body, the positioning piece extends downward from the hinge position, and is applied with a force to rotate toward the direction close to the center line of the fixing groove, and the positioning piece is limited and fixed to the jacking equipment body.

5. The jacking device according to claim 4, characterized in that, A torsion spring is provided at the hinged joint between the rod body and the positioning member, and the torsion spring can exert a force to rotate the positioning member toward the center line direction of the fixing groove.

6. The jacking device according to claim 4 or 5, characterized in that, The outer side wall of the lifting device body is provided with a positioning member movable groove, and the positioning member can extend into the positioning member movable groove and can be fixed in a limited position with the positioning member movable groove.

7. The jacking device according to claim 1, characterized in that A pad is provided on the pushing end of the hydraulic jacking device.

8. The jacking device according to claim 1, characterized in that, The shoulder pole is made of chrome steel.

9. The jacking device according to claim 1, characterized in that, A plurality of anchor bolts are provided on one side of the load-bearing base, and the load-bearing base is fixedly connected to the bridge pier via the anchor bolts.

10. The jacking device according to claim 9, characterized in that, The anchor bolt is a standardized chemical anchor bolt with a grade not lower than M20.

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