Supporting leg rotating mechanism in bridge erecting machine in bridge construction

Abstract

The utility model discloses a supporting leg rotating mechanism in a bridge girder erection machine in bridge construction, which belongs to the technical field of bridge girder erection machines and comprises a cross beam, a base is arranged on the lower side of the cross beam, a sleeve is arranged on one side, close to the base, of the cross beam, an inner bearing plate is arranged in the sleeve, and a first motor is arranged at the position, corresponding to the inner bearing plate, of the upper end of the base. A screw is arranged at the output end of the first motor, an air cylinder is arranged on one side of the first motor, a supporting leg body is arranged on the side, away from the sleeve, of the upper end of the cross beam, and a rotating assembly is arranged between the supporting leg body and the cross beam. The worm rotates to drive the supporting leg body to rotate on the cross beam through the worm gear, due to the fact that the worm locks the worm gear, the supporting leg body cannot rotate on the cross beam, the bolts are detached, the box door can be detached, parts in the fixing box can be conveniently overhauled and maintained, the supporting leg body can be rotationally adjusted by arranging the rotating assembly, and the supporting leg body can be conveniently detached. The device practicability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge erection machines, and in particular relates to a leg rotating mechanism in a bridge erection machine during bridge construction. Background Art

[0002] A bridge erection machine is a special construction machine used to lift prefabricated reinforced concrete (or prestressed concrete) beams onto bridge supports (piers).

[0003] Chinese patent application No. 2022204122525 discloses a front leg lifting mechanism for a highway bridge erection machine, including a crossbeam and a front leg body, wherein the front leg body is fixed on one end of the crossbeam; a sleeve runs through the crossbeam, and a lifting assembly and a reinforcing assembly are arranged inside the sleeve, and the bottom end of the lifting assembly passes through the sleeve and is fixed on the base. In the front leg lifting mechanism of the highway bridge erection machine, the reducer reduces the rotation rate, increases the torque, and drives the screw to rotate; during the rotation of the screw, the inner support plate is driven to rise or fall. The air pump drives the internal pressure of the cylinder to increase and the support rod to extend by sending gas into the first air pipe, so as to play an auxiliary support role during the rising process of the inner support plate.

[0004] In the above-mentioned patent, the leg body cannot be rotated and adjusted on the beam, which has poor practicality. At the same time, the stability between the original beam and the base is poor, and the safety is low. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a leg rotation mechanism in a bridge erecting machine used in bridge construction, which has the characteristics that the leg body can be rotated and adjusted on the crossbeam and has high practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an outrigger rotating mechanism in a bridge erecting machine during bridge construction comprises a crossbeam, a base is arranged on the lower side of the crossbeam, a sleeve is arranged on the side of the crossbeam close to the base, an inner supporting plate is arranged in the sleeve, a motor is arranged at a position corresponding to the inner supporting plate on the upper end of the base, a screw is arranged at the output end of the motor, a cylinder is arranged on one side of the motor, an outrigger body is arranged on the side of the upper end of the crossbeam away from the sleeve, and a rotating assembly is arranged between the outrigger body and the crossbeam.

[0007] Preferably, the rotating assembly includes a fixed box, a box door, a worm gear, a second motor, a worm, bolts and a lubrication assembly, wherein a fixed box is arranged at a position corresponding to the upper end of the beam and the leg body, a box door is arranged at the front end of the fixed box, the box door and the fixed box are connected by bolts, a worm gear is arranged on the lower side of the surface of the leg body, a second motor is arranged at a position corresponding to the worm gear at one end inside the fixed box, a worm is arranged at the output end of the second motor, and a lubrication assembly is arranged at a position corresponding to the worm gear and the worm at the upper end of the fixed box.

[0008] Preferably, the lubrication assembly includes an oil tank, a folded tube, a rope body, an oil filling tube and a liquid level window, wherein an oil tank is arranged at a position on the upper end of the fixed box corresponding to the worm gear and the worm, a liquid level window is arranged at one end of the oil tank, an oil filling tube is arranged on the upper side of one end of the oil tank, a folded tube is arranged at the upper end of the oil tank, and the rope body is arranged in the folded tube.

[0009] Preferably, fixing holes corresponding to the bolts are arranged on both sides of the front end of the fixed box, and a handle is welded on the front end of the box door.

[0010] Preferably, two lower plates are provided at both ends of the base, a fixing cylinder is provided between the two lower plates, a sliding plate is provided in the fixing cylinder, a sliding rod is provided at the upper end of the sliding plate, and the sliding rod is connected to the cross beam through the upper plate.

[0011] Preferably, the fixed cylinder and the lower plate, as well as the sliding rod and the upper plate, are rotatably connected via an axle pin, and a sliding hole corresponding to the sliding rod is provided at the upper end of the fixed cylinder.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model sets a rotating assembly, starts motor 2 to drive the worm to rotate, and the rotation of the worm can drive the support leg body to rotate on the crossbeam through the worm gear. Since the worm locks the worm gear, the support leg body cannot rotate on the crossbeam. The bolts can be removed and the box door can be disassembled, which is convenient for inspection and maintenance of parts in the fixed box. By setting the rotating assembly, the support leg body can be rotated and adjusted, thereby improving the practicality of the device.

[0014] 2. The utility model sets a fixed cylinder and a sliding rod. When the height of the beam is adjusted, the sliding rod and the sliding plate slide in the fixed cylinder, and the sliding rod and the fixed cylinder rotate on the upper plate and the lower plate respectively. Several fixed cylinders and sliding rods can limit the position between the beam and the base, thereby making the stability between the beam and the base better and the safety higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a cutaway perspective view of the fixing tube of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the utility model when the box door is installed;

[0018] Figure 4 This is a cutaway perspective view of the fuel tank of the utility model;

[0019] In the figure: 1. crossbeam; 2. rotating assembly; 21. fixed box; 22. box door; 23. worm gear; 24. motor 2; 25. worm; 26. bolt; 27. lubrication assembly; 271. oil tank; 272. folding pipe; 273. rope body; 274. oil filling pipe; 275. liquid level window; 3. outrigger body; 4. inner bearing plate; 5. sleeve; 6. fixed cylinder; 7. base; 8. motor 1; 9. screw; 10. cylinder; 11. slide rod; 12. slide plate; 13. lower plate; 14. upper plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1-4 The utility model provides the following technical solutions: a leg rotation mechanism in a bridge erecting machine during bridge construction comprises a crossbeam 1, a base 7 is arranged at the lower side of the crossbeam 1, a sleeve 5 is arranged at the side of the crossbeam 1 close to the base 7, an inner bearing plate 4 is arranged in the sleeve 5, a motor 8 is arranged at a position corresponding to the inner bearing plate 4 at the upper end of the base 7, a screw 9 is arranged at the output end of the motor 8, a cylinder 10 is arranged at one side of the motor 8, an outrigger body 3 is arranged at the upper end of the crossbeam 1 away from the sleeve 5, and a rotating component 2 is arranged between the outrigger body 3 and the crossbeam 1.

[0023] Specifically, the rotating assembly 2 includes a fixed box 21, a box door 22, a worm gear 23, a second motor 24, a worm 25, bolts 26 and a lubrication assembly 27, wherein a fixed box 21 is arranged at a position corresponding to the upper end of the beam 1 and the leg body 3, a box door 22 is arranged at the front end of the fixed box 21, the box door 22 and the fixed box 21 are connected by bolts 26, a worm gear 23 is arranged on the lower side of the surface of the leg body 3, a second motor 24 is arranged at a position corresponding to the worm gear 23 at one end inside the fixed box 21, a worm 25 is arranged at the output end of the second motor 24, and a lubrication assembly 27 is arranged at a position corresponding to the worm gear 23 and the worm 25 at the upper end of the fixed box 21.

[0024] By adopting the above technical solution, the motor 24 is turned on to drive the worm 25 to rotate. The rotation of the worm 25 can drive the leg body 3 to rotate on the beam 1 through the worm gear 23. Since the worm 25 locks the worm gear 23, the leg body 3 cannot rotate on the beam 1. The bolt 26 is removed and the box door 22 can be disassembled, which is convenient for inspection and maintenance of the parts in the fixed box 21. By setting the rotating component 2, the leg body 3 can be rotated and adjusted, thereby improving the practicality of the device.

[0025] Specifically, the lubrication assembly 27 includes an oil tank 271, a folded tube 272, a rope body 273, an oil filling tube 274 and a liquid level window 275, wherein the oil tank 271 is arranged at a position on the upper end of the fixed box 21 corresponding to the worm gear 23 and the worm 25, a liquid level window 275 is arranged at one end of the oil tank 271, an oil filling tube 274 is arranged on the upper side of one end of the oil tank 271, a folded tube 272 is arranged on the upper end of the oil tank 271, and the rope body 273 is arranged in the folded tube 272.

[0026] By adopting the above technical solution, the amount of oil in the oil tank 271 can be observed through the liquid level window 275, and the lubricating oil is injected into the oil tank 271 through the oil filling pipe 274. The rope body 273 in the folded tube 272 absorbs the lubricating oil, and one end of the rope body 273 drips the lubricating oil onto the worm 25 and the worm gear 23, thereby achieving a self-lubricating effect on the worm 25 and the worm gear 23.

[0027] Specifically, fixing holes corresponding to the bolts 26 are arranged on both sides of the front end of the fixing box 21, and a handle is welded on the front end of the box door 22.

[0028] By adopting the above technical solution, the bolt 26 can be screwed into the fixing hole to fix the fixing box 21, and a handle is provided to facilitate taking the box door 22.

[0029] When the present embodiment is used, when the leg rotation mechanism is used in the bridge erecting machine in bridge construction, the device is installed in a suitable position, and the motor 1 8 and the cylinder 10 are turned on. The motor 1 8 can drive the screw 9 to rotate. The rotation of the screw 9 drives the sleeve 5 to rise and fall through the inner bearing plate 4. At the same time, the cylinder 10 pushes the inner bearing plate 4 to rise and fall, and the sleeve 5 drives the beam 1 to rise and fall. By setting the rotating component 2, the motor 2 24 is turned on to drive the worm 25 to rotate. The rotation of the worm 25 can drive the leg body 3 to rotate on the beam 1 through the worm gear 23. Since the worm 25 locks the worm gear 23, the leg body 3 cannot be on the beam 1. The support leg 21 rotates by itself, and the bolts 26 are removed, and the box door 22 can be disassembled, so that the parts in the fixed box 21 can be inspected and maintained. The support leg body 3 can be rotated and adjusted by setting the rotating component 2, so as to improve the practicality of the device. The lubricating component 27 is set, and the oil amount in the oil tank 271 can be observed through the liquid level window 275. The lubricating oil is injected into the oil tank 271 through the oil filling pipe 274, and the rope body 273 in the folded tube 272 absorbs the lubricating oil. One end of the rope body 273 drips the lubricating oil onto the worm 25 and the worm gear 23, so as to achieve the self-lubricating effect of the worm 25 and the worm gear 23.

[0030] Example 2

[0031] The difference between this embodiment and embodiment 1 is that two lower plates 13 are provided at both ends of the base 7, a fixed tube 6 is provided between the two lower plates 13, a slide plate 12 is provided in the fixed tube 6, a slide bar 11 is provided at the upper end of the slide bar 12, and the slide bar 11 is connected to the beam 1 through an upper plate 14.

[0032] By adopting the above technical solution, when the height of the beam 1 is adjusted, the sliding rod 11 and the sliding plate 12 slide in the fixed cylinder 6, and the sliding rod 11 and the fixed cylinder 6 rotate on the upper plate 14 and the lower plate 13 respectively. Several fixed cylinders 6 and sliding rods 11 can play a limiting role between the beam 1 and the base 7, thereby making the stability between the beam 1 and the base 7 better and the safety higher.

[0033] Specifically, the fixed cylinder 6 and the lower plate 13 as well as the sliding rod 11 and the upper plate 14 are rotatably connected via an axle pin, and a sliding hole corresponding to the sliding rod 11 is provided at the upper end of the fixed cylinder 6 .

[0034] By adopting the above technical solution, the fixed cylinder 6 and the sliding rod 11 can rotate on the lower plate 13 and the upper plate 14 respectively, and the sliding rod 11 can slide on the fixed cylinder 6.

[0035] When this embodiment is used, by setting the fixed cylinder 6 and the sliding rod 11, when the height of the beam 1 is adjusted, the sliding rod 11 and the sliding plate 12 slide in the fixed cylinder 6, and the sliding rod 11 and the fixed cylinder 6 rotate on the upper plate 14 and the lower plate 13 respectively. Several fixed cylinders 6 and sliding rods 11 can play a limiting role between the beam 1 and the base 7, so that the stability between the beam 1 and the base 7 is better and the safety is higher.

[0036] The motor 24 in the present invention is an existing disclosed technology, and the selected model is 5IK120GN-CF.

[0037] The structure and working principle of the cross beam 1, the leg body 3, the inner support plate 4, the sleeve 5, the base 7, the motor 8, the screw 9 and the cylinder 10 in the utility model have been disclosed in a front leg lifting mechanism of a highway bridge erecting machine disclosed in Chinese patent application No. 2022204122525. The working principle is to turn on the motor 8 and the cylinder 10, the motor 8 can drive the screw 9 to rotate, and the rotation of the screw 9 drives the sleeve 5 to rise and fall through the inner support plate 4. At the same time, the cylinder 10 pushes the inner support plate 4 to rise and fall, and the sleeve 5 drives the cross beam 1 to rise and fall and adjust.

[0038] The working principle and use process of the utility model are as follows: when the outrigger rotating mechanism is used in the bridge erecting machine during bridge construction, the device is installed in a suitable position, and the motor 8 and the cylinder 10 are turned on. The motor 8 can drive the screw 9 to rotate, and the rotation of the screw 9 drives the sleeve 5 to rise and fall through the inner bearing plate 4. At the same time, the cylinder 10 pushes the inner bearing plate 4 to rise and fall, and the sleeve 5 drives the beam 1 to rise and fall and adjust. By setting the rotating component 2, the motor 24 is turned on to drive the worm 25 to rotate. The rotation of the worm 25 can drive the outrigger body 3 to rotate on the beam 1 through the worm gear 23. Since the worm 25 locks the worm gear 23, the outrigger body 3 cannot rotate on the beam 1. The bolt 26 is removed, and the box door 22 can be disassembled, which is convenient for the inspection and maintenance of the parts in the fixed box 21. The outrigger body can be 3 is used for rotation adjustment to improve the practicality of the device. By setting the lubricating component 27, the amount of oil in the oil tank 271 can be observed through the liquid level window 275, and the lubricating oil is injected into the oil tank 271 through the oil filling pipe 274. The rope body 273 in the folded tube 272 absorbs the lubricating oil, and one end of the rope body 273 drips the lubricating oil onto the worm 25 and the worm gear 23, so as to achieve the self-lubricating effect of the worm 25 and the worm gear 23. By setting the fixed cylinder 6 and the sliding rod 11, when the height of the beam 1 is adjusted, the sliding rod 11 and the sliding plate 12 slide in the fixed cylinder 6, and the sliding rod 11 and the fixed cylinder 6 rotate on the upper plate 14 and the lower plate 13 respectively. A plurality of fixed cylinders 6 and sliding rods 11 can limit the position between the beam 1 and the base 7, so that the stability between the beam 1 and the base 7 is better and the safety is higher.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leg rotation mechanism in a bridge erecting machine in bridge construction, including a crossbeam, characterized in that: A base is arranged on the lower side of the cross beam, a sleeve is arranged on the side of the cross beam close to the base, an inner support plate is arranged in the sleeve, a motor 1 is arranged at a position corresponding to the inner support plate on the upper end of the base, a screw is arranged at the output end of the motor 1, a cylinder is arranged on one side of the motor 1, a leg body is arranged on the side of the upper end of the cross beam away from the sleeve, and a rotating component is arranged between the leg body and the cross beam.

2. The leg rotation mechanism in the bridge erecting machine in bridge construction according to claim 1, characterized in that: The rotating assembly includes a fixed box, a box door, a worm gear, a second motor, a worm, bolts and a lubrication assembly, wherein a fixed box is arranged at a position corresponding to the upper end of the beam and the leg body, a box door is arranged at the front end of the fixed box, the box door and the fixed box are connected by bolts, a worm gear is arranged on the lower side of the surface of the leg body, a second motor is arranged at a position corresponding to the worm gear at one end inside the fixed box, a worm is arranged at the output end of the second motor, and a lubrication assembly is arranged at a position corresponding to the worm gear and the worm at the upper end of the fixed box.

3. The leg rotation mechanism in the bridge erecting machine in bridge construction according to claim 2, characterized in that: The lubrication assembly includes an oil tank, a folded tube, a rope body, an oil filling pipe and a liquid level window, wherein an oil tank is arranged at a position corresponding to the worm gear and the worm on the upper end of the fixed box, a liquid level window is arranged at one end of the oil tank, an oil filling pipe is arranged on the upper side of one end of the oil tank, a folded tube is arranged at the upper end of the oil tank, and the rope body is arranged in the folded tube.

4. The leg rotation mechanism in the bridge erecting machine in bridge construction according to claim 2, characterized in that: Both sides of the front end of the fixed box are provided with fixing holes corresponding to the bolts, and a handle is welded on the front end of the box door.

5. The leg rotation mechanism in the bridge erecting machine in bridge construction according to claim 1, characterized in that: Two lower plates are arranged at both ends of the base, a fixing cylinder is arranged between the two lower plates, a sliding plate is arranged in the fixing cylinder, a sliding rod is arranged at the upper end of the sliding plate, and the sliding rod is connected to the cross beam through the upper plate.

6. The leg rotation mechanism in the bridge erecting machine in bridge construction according to claim 5, characterized in that: The fixed cylinder and the lower plate, as well as the sliding rod and the upper plate, are rotatably connected via an axle pin, and a sliding hole corresponding to the sliding rod is arranged at the upper end of the fixed cylinder.

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