Multifunctional walking type pushing device for steel beam

Abstract

The application discloses a kind of steel beam multifunctional step-by-step jacking device, including base, jacking platform, step platform, deviation rectification platform, support lead screw and motor, jacking platform, step platform are sequentially equipped on the top of base, each is equipped with a jacking hydraulic cylinder at the four corners in base;Step hydraulic cylinder is equipped in step platform, and the extension end of step hydraulic cylinder is fixedly connected with deviation rectification platform to make step platform and jacking platform slidingly connected;Support lead screw is rotatably connected in base, motor is horizontally placed in base, the output end of motor is connected with support lead screw by gear, motor drives support lead screw to rotate, the top of support lead screw and the bottom plate of jacking platform abut, and lead screw nut is threadedly connected on the side wall of support lead screw.The application has the advantages that the angle of jacking platform can be deflected when jacking, the moving direction of steel beam is corrected, and support lead screw can be supported after hydraulic system fails, to avoid large construction accidents caused by steel beam falling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, and particularly relates to a multifunctional walking type pushing device for steel beam. BACKGROUND

[0002] The pushing method construction is to set a steel guide beam and temporary piers, sliding ways, jacks and other force applying devices at a bridge site, and to push the steel beam to move on the sliding way to a design position through the jacks.

[0003] However, in the conventional pushing method construction, the point arrangement of the walking top is more, and the walking top repeatedly lifts and drops the steel beam, so that the steel beam bears a large force from the walking top and the temporary piers, and the support position and the support point are constantly changing. For the steel beam with a long pushing distance and a large weight, the safety performance is low and the structure of the steel beam is easily affected. While using other methods such as the pulling method, although the sliding block is used for support, the influence on the beam body is reduced, but the way of using the steel strand and the sliding block cannot meet the synchronization requirement, and the accuracy is poor. In addition, the walking type pushing device also has a probability of hydraulic system failure, and the steel beam is a large weight component, so if the hydraulic system fails during the pushing process, the steel beam cannot be smoothly moved, and the steel beam may fall and cause a large construction safety accident.

[0004] In summary, the conventional pushing method construction has the following disadvantages: the pushing device cannot be twisted, the adjustment offset workload is large, and the hydraulic system failure of the pushing control will cause a safety accident.

[0005] Therefore, in view of the above problems, it is necessary to provide a multifunctional walking type pushing device. SUMMARY

[0006] The present application relates to the technical field of bridge construction, and particularly relates to a multifunctional walking type pushing device for steel beam.

[0007] The present application is implemented as follows:

[0008] The utility model provides a kind of steel beam multifunctional step-by-step jacking device, it is characterized by: including base, jacking platform, step platform, deviation rectification platform, support lead screw and motor, jacking platform, step platform are sequentially provided with on the top of base, each is equipped with a jacking hydraulic cylinder at the four corners in base, the extension end of jacking hydraulic cylinder is fixedly connected with the rotary table of jacking platform bottom;Two identical deviation rectification platforms are respectively slidably connected in the left and right sides of jacking platform, the lower end surface of step platform is slidably connected in the upper end surface of jacking platform, step hydraulic cylinder is provided in step platform, the extension end of step hydraulic cylinder is fixedly connected with deviation rectification platform to make step platform and jacking platform slidably connected, the sliding direction of deviation rectification platform is perpendicular to step platform;Support lead screw is rotatably connected in base vertically, motor is horizontally placed in base, the output end of motor is connected with support lead screw by gear, motor drives support lead screw to rotate, the top of support lead screw is abutted with the bottom plate of jacking platform, lead nut is threadedly connected on the lateral wall of support lead screw, lead nut is connected with the lower end surface of rotary table of jacking platform bottom.

[0009] As further illustration of the present application, preferably, a screw cavity is provided in the base, a screw hole is provided in the middle of the upper surface of the base and communicates with the screw cavity, the length direction of the support lead screw is vertical, the bottom of the support lead screw is rotatably connected with a lower bearing on the bottom plate in the screw cavity, a rotating hole is provided in the middle of the jacking platform, which is downwardly open and corresponds in position to the screw hole and has the same diameter, the upper part of the support lead screw extends upward through the screw hole and into the rotating hole, and a top sleeve is fixedly connected to the top of the support lead screw.

[0010] As further illustration of the present application, preferably, a rotary table is inserted into the lower end surface of the jacking platform, the width of the rotary table is the same as that of the jacking platform, the length direction of the rotary table has two arc-shaped ends, a rotating hole is provided in the middle of the rotary table, which penetrates upward and downward and has the same diameter as the rotating hole of the jacking platform, the extension end of the jacking hydraulic cylinder is fixedly connected with the lower end surface of the rotary table, and the top of the lead nut is fixedly connected with the rotary table.

[0011] As further illustration of the present application, preferably, a limiting sleeve is sleeved between the bevel gear set and the lead nut in the middle of the outer lateral wall of the support lead screw, the outer lateral wall of the limiting sleeve is fixedly connected with the inner wall of the screw cavity of the base; wherein: an upper bearing is inserted into the limiting sleeve, the inner ring layer of the upper bearing is abutted with the outer lateral wall of the support lead screw; a cover is provided on the upper surface of the upper bearing to fix the upper bearing.

[0012] As further illustration of the present application, preferably, an inner recessed deviation rectification platform sliding groove is provided on each of the left and right sides of the jacking platform, the two deviation rectification platform sliding grooves are parallel to each other, one deviation rectification platform is embedded in one jacking platform deviation rectification platform sliding groove, and a deviation rectification hydraulic cylinder is provided at each of the front and rear ends of each deviation rectification platform sliding groove of the jacking platform, the extension end of the deviation rectification hydraulic cylinder is fixedly connected with the deviation rectification platform in the deviation rectification platform sliding groove.

[0013] As a further illustration of the present application, preferably, the cross section of the screw nut is 'T' shaped, the outer diameter of the wing plate of the screw nut is larger than the diameter of the screw hole, so that the wing plate of the screw nut can be pressed on the top of the base.

[0014] As a further illustration of the present application, preferably, a top sleeve is fixedly connected to the top of the supporting screw, and has a spacing between the jacking platform after the jacking hydraulic cylinder is extended.

[0015] As a further illustration of the present application, preferably, when the jacking hydraulic cylinder is completely retracted, the top sleeve supporting the end of the screw is in close abutment with the jacking platform, so that the jacking platform cannot continue to descend with the jacking hydraulic cylinder, and thus the jacking platform has a gap with the rotating platform.

[0016] As a further illustration of the present application, preferably, the motor is a servo motor with a built-in planetary gear reducer, the motor is arranged on the bottom plate in the screw cavity through a support, the output end of the motor is fixedly connected with a bevel gear set through a shaft coupling, the bevel gear set is composed of two bevel gears meshing with each other, the axes of the two bevel gears are perpendicular to each other, one of the bevel gears is connected with the motor, and the other bevel gear is fixedly connected with the bottom of the outer side wall of the supporting screw.

[0017] As a further illustration of the present application, preferably, an arc-shaped detection disc is fixedly connected to the outside of the width side of the jacking platform, a scale is marked on the detection disc, and a corner measurer is arranged on the side of the jacking platform in the direction of the detection disc, the corner measurer is composed of a light source and a macro camera, and the light source and the macro camera are electrically connected with the control room.

[0018] As a further illustration of the present application, preferably, the arc angle of the detection disc is not more than 50°.

[0019] As a further illustration of the present application, preferably, when the jacking device is not used, a supporting platform is inserted between the jacking platform and the base to make the top sleeve have a gap with the jacking platform.

[0020] The above technical scheme of the present application has the following advantages:

[0021] 1. By designing the supporting screw to cooperate with the screw nut, the steel beam can be supported by the supporting screw when the hydraulic system fails, so as to avoid a large construction accident caused by the sudden drop of the steel beam.

[0022] 2. The supporting screw can deflect the angle of the jacking platform during jacking, so as to adjust the rotation angle of the jacking platform and correct the moving direction of the steel beam, so that the walking jacking device can also be adapted to the steel beam with a certain curvature, and the practicality and precision are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the left side view of the present application;

[0024] Figure 2 is the right side view of the present application;

[0025] Figure 3 is the step sectional view of the present application;

[0026] Figure 4 is the top view of the present application;

[0027] Figure 5 is the sectional view of the present application;

[0028] Figure 6 is Figure 5 is the enlarged view of A in the figure;

[0029] Figure 7 is the structural schematic view of the deviation rectifying platform;

[0030] Figure 8 is the rotating schematic view of the jacking platform of the present application;

[0031] Figure 9 is the use state view of the present application;

[0032] In the figure: 1, base; 11, jacking hydraulic cylinder; 2, jacking platform; 21, rotating platform; 22, detection disc; 23, rotating angle measurer; 24, deviation rectifying platform sliding groove; 25, rotating hole; 3, stepping platform; 31, stepping hydraulic cylinder; 4, deviation rectifying platform; 41, deviation rectifying hydraulic cylinder; 5, supporting lead screw; 51, lead screw nut; 52, limiting sleeve; 53, upper bearing; 54, cover; 55, top sleeve; 56, lead screw cavity; 57, lead screw hole; 58, lower bearing; 59, wing plate; 6, motor; 61, bevel gear set; 62, support; 7, supporting platform. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] A multifunctional walking type jacking device, which combines Figure 1 , Figure 3, including base 1, jacking table 2, stepping table 3, deviation rectification table 4, supporting lead screw 5 and motor 6, jacking table 2 and stepping table 3 are sequentially arranged on the top of base 1, jacking hydraulic cylinder 11 is arranged at each corner of base 1, the extending end of jacking hydraulic cylinder 11 is fixedly connected with rotary table 21 at the bottom of jacking table 2; two identical deviation rectification tables 4 are respectively slidably connected on the left and right sides of jacking table 2, the lower end surface of stepping table 3 is slidably connected with the upper end surface of jacking table 2, stepping hydraulic cylinder 31 is arranged in stepping table 3, the extending end of stepping hydraulic cylinder 31 is fixedly connected with deviation rectification table 4 to make stepping table 3 slidably connected with jacking table 2, and the sliding direction of deviation rectification table 4 is perpendicular to stepping table 3; supporting lead screw 5 is rotatably connected in base 1, motor 6 is horizontally arranged in base 1, the output end of motor 6 is connected with supporting lead screw 5 through a gear, motor 6 drives supporting lead screw 5 to rotate, the top of supporting lead screw 5 abuts against the bottom plate of jacking table 2, and lead screw nut 51 is threadedly connected on the side wall of supporting lead screw 5 and connected with rotary table 21 at the bottom of jacking table 2.

[0035] In combination Figure 2 , Figure 5 , base 1 is a square shell (not all structures are shown in the figure), jacking hydraulic cylinder 11 is arranged at each corner of base 1, and the extending direction of jacking hydraulic cylinder 11 is vertical. Figure 4 In combination Figure 4 , jacking table 2 is a square plate structure, rotary table 21 is inserted into the lower end surface of jacking table 2, the width of rotary table 21 is the same as that of jacking table 2, the length direction of rotary table 21 is arc-shaped, jacking table 2 and rotary table 21 are smooth planes and can rotate relative to each other, the extending end of jacking hydraulic cylinder 11 is fixedly connected with the lower end surface of rotary table 21, lead screw nut 51 is fixedly connected with rotary table 21 and can support jacking table 2, arc-shaped detection disc 22 is fixedly connected with rotary table 21 outside the width side of jacking table 2, the arc angle of detection disc 22 is not more than 50° and can be suitable for many curved construction environments, a scale is marked on detection disc 22, and corner measurer 23 is arranged on the side direction of jacking table 2, corner measurer 23 is composed of a light source and a macro camera, and the light source and the macro camera are electrically connected with the control room. Figure 7 As shown in Figure 7 , the control room can directly observe the current rotary position of jacking table 2, so that the rotary angle of jacking table 2 can be controlled by the staff.

[0036] In combination Figure 1 , Figure 2The stepping platform 3 is a square block, located above the lifting platform 2. A stepping hydraulic cylinder 31 is installed inside the stepping platform 3. The two protruding ends of the stepping hydraulic cylinder 31 are perpendicularly and fixedly connected to the correction platforms 4 on the left and right sides of the lifting platform 2, respectively, so that the stepping hydraulic cylinder 31 can drive the stepping platform 3 to slide left and right on the lifting platform 2. The top of the stepping platform 3 contacts the bottom of the steel beam, thus achieving the propulsion function. The correction platform 4 is also a square block, with a concave correction platform sliding groove 24 on each of the left and right sides of the lifting platform 2. The two correction platform sliding grooves 24 are parallel to each other. A straightening platform 4 is embedded in the straightening platform sliding groove 24 of a lifting platform 2. A straightening hydraulic cylinder 41 is provided at the front and rear ends of each straightening platform sliding groove 24 of the lifting platform 2. The extended end of the straightening hydraulic cylinder 41 is fixedly connected to the straightening platform 4 in the straightening platform sliding groove 24. The forward and backward extension of the straightening hydraulic cylinder 41 can make the sliding direction of the straightening platform 4 perpendicular to the sliding direction of the stepping platform 3. That is, the lateral movement of the stepping platform 3 is driven to drive the lateral straightening of the steel beam. When it is found that the position of the pushed steel beam has shifted, the straightening hydraulic cylinder 41 can be activated to make up for the shift.

[0037] Combination Figure 3 , Figure 5 A lead screw cavity 56 is provided inside the base 1, and a lead screw hole 57 communicating with the lead screw cavity 56 is provided in the middle of the upper part of the base 1. The length direction of the support lead screw 5 is vertical, and the bottom of the support lead screw 5 is rotatably connected to the lower bearing 58 on the bottom plate inside the lead screw cavity 56. At the corresponding upper and lower positions in the middle of the turntable 21 and the lifting platform 2, there are downward-opening rotating holes 25 with the same diameter as the lead screw hole 57. The upper part of the support lead screw 5 extends upward through the lead screw hole 57 and into the rotating hole 25. The top of the lever 5 is fixedly connected to the top sleeve 55; the diameter of the supporting screw 5 is not less than 100mm, and a screw nut 51 is provided in the upper part of the side wall of the supporting screw 5 through a threaded connection. The screw nut 51 is fixedly connected to the turntable 21; after the lifting hydraulic cylinder 11 extends upward, there is a gap between the top sleeve 55 and the lifting platform 2. After the lifting hydraulic cylinder 11 retracts downward completely, the top sleeve 55 can abut against the bottom plate of the lifting platform 2 in the rotating hole 25. At this time, there is a gap between the lifting platform 2 and the turntable 21.

[0038] The cross-section of the lead screw nut 51 is "T" shaped. The outer diameter of the flange 59 of the lead screw nut 51 is larger than the diameter of the lead screw hole 57, so that the flange 59 of the lead screw nut 51 can press on the base 1.

[0039] Combination Figure 3 , Figure 5The motor 6 is a servo motor with a built-in planetary gear reducer. The motor 6 is arranged on the bottom plate in the screw cavity 56 through the support 62. The output end of the motor 6 is fixedly connected with a bevel gear set 61 through a shaft coupling. The bevel gear set 61 is composed of two bevel gears which are in mesh with each other. The axes of the two bevel gears are perpendicular to each other. One of the bevel gears is connected with the motor 6, and the other bevel gear is fixedly connected with the bottom of the outer side wall of the supporting screw rod 5.

[0040] In combination Figure 5 , Figure 6 A limiting sleeve 52 is sleeved between the bevel gear set 61 and the screw nut 51 in the middle of the outer side wall of the supporting screw rod 5. The inner diameter of the limiting sleeve 52 is the same as the outer diameter of the supporting screw rod 5. The outer side wall of the limiting sleeve 52 is fixedly connected with the inner wall of the screw cavity 56 of the base 1. The rotation of the supporting screw rod 5 is smooth and stable, and the position of the supporting screw rod 5 is stable, so that the supporting screw rod 5 is prevented from being deviated. The upper surface of the upper bearing 53 is provided with a cover 54 to fix the upper bearing 53.

[0041] In combination Figure 1 , Figure 2 When the pushing device is not used, the supporting table 7 is inserted between the jacking table 2 and the base 1. The bottom end and the top end of the supporting table 7 are connected with the base 1 and the jacking table 2 through bolts, respectively. The jacking table 2 is supported by the supporting table 7, so that there is a gap between the top sleeve 55 and the jacking table 2. In this way, the jacking table 2 and the rotating table 21 are prevented from being separated and deviated, and the supporting screw rod 5 is prevented from being deformed and failed due to long-term pressure, so as to protect the supporting screw rod 5.

[0042] Working principle:

[0043] 1. When the pushing work is performed, the output end of the jacking hydraulic cylinder 11 is stretched upward to lift the rotating table 21 and the jacking table 2 to move upward together. At the same time, the motor 6 is powered to rotate, so that the supporting screw rod 5 is rotated through the shaft coupling and the bevel gear set 61. The supporting screw rod 5 drives the screw nut 51 and the rotating table 21 to move upward together. After jacking, the step hydraulic cylinder 31 in the step table 3 is started to control the step table 3 to move left and right, so as to achieve the purpose of pushing the step table 3.

[0044] 2. If the hydraulic system fails, the jacking hydraulic cylinder 11 loses pressure, and the jacking table 2 falls due to its own gravity. The rotating table 21 and the screw nut 51 fall together, and the screw nut 51 also drives the supporting screw rod 5 to rotate. At this time, the top sleeve 55 at the top end of the supporting screw rod 5 is in close abutment with the bottom plate of the jacking table 2 in the rotating hole 25, and the wing plate 59 of the screw nut 51 can be pressed on the upper surface of the base 1. The supporting screw rod 5 and the base 1 support the jacking table 2 together, so that the jacking table 2 does not fall again, and a larger accident is avoided.

[0045] 3. When the jacking device is used in an environment that requires deflection and jacking, when the jacking platform 2 deflects, the jacking hydraulic cylinder 11 fully retracts, causing the turntable 21 to fall. The jacking platform 2 and the top sleeve 55 at the top of the support screw 5 are in close contact, and the turntable 21 separates from the jacking platform 2. At this time, the motor 6 is controlled to rotate, and the support screw 5 also rotates. Thus, the support screw 5 can control the jacking platform 2 to deflect relative to the turntable 21 through the top sleeve 55 at the top of the support screw 5. At this time, the reading of the detection plate 22 is observed from the control console. After the deflection reaches the specified angle, which is generally 45°, the motor 6 is controlled to stop rotating. The jacking hydraulic cylinder 11 is also slowly raised at this time, so that the turntable 21 rises and fits perfectly with the jacking platform 2, completing the position offset.

[0046] 4. When it is found that the position of the jacking steel beam has shifted, the correction hydraulic cylinder 41 is activated. The forward and backward extension of the correction hydraulic cylinder 41 can cause the correction table 4 to drive the stepping table 3 to move laterally, thereby making up for the lateral shift of the steel beam.

[0047] This invention, by designing only the supporting screw 5 and screw nut 51, can both support the falling steel beam and control the deflection of the lifting platform 2 at a specified angle, achieving two goals at once.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-functional walking jacking device for steel girder, characterized in that: The base, the lifting platform, the stepping platform, the deviation rectifying platform, the supporting screw rod and the motor are sequentially arranged on the top of the base, the lifting hydraulic cylinder is arranged at each corner of the base, the extending end of the lifting hydraulic cylinder is fixedly connected with the rotating platform at the bottom of the lifting platform, two identical deviation rectifying platforms are slidably connected on the left and right sides of the lifting platform, the stepping hydraulic cylinder is arranged in the stepping platform, the extending end of the stepping hydraulic cylinder is fixedly connected with the deviation rectifying platform, the stepping platform is slidably connected with the lifting platform, the sliding direction of the deviation rectifying platform is perpendicular to the stepping platform, the vertical supporting screw rod is rotatably connected in the base, the motor is horizontally arranged in the base, the output end of the motor is connected with the supporting screw rod through the gear, the motor drives the supporting screw rod to rotate, the top of the supporting screw rod abuts against the bottom plate of the lifting platform, the screw nut is threadedly connected on the side wall of the supporting screw rod, and the screw nut is connected with the lower end surface of the rotating platform at the bottom of the lifting platform.

2. The multi-functional walking straddle jacking device for steel beams according to claim 1, characterized in that: The screw rod cavity is arranged in the base, the screw rod hole is arranged on the middle of the upper surface of the base and communicates with the screw rod cavity, the length direction of the supporting screw rod is vertical, the bottom of the supporting screw rod is rotatably connected with the lower bearing on the bottom plate in the screw rod cavity, the rotating hole is downwardly and downwardly arranged in the middle of the lifting platform and corresponds to the position of the screw rod hole and has the same diameter, the upper part of the supporting screw rod extends into the rotating hole through the screw rod hole, and the top of the supporting screw rod is fixedly connected with the top sleeve.

3. The multi-functional walking straddle jacking device for steel beams according to claim 2, characterized in that: The rotating platform is inserted on the lower end surface of the lifting platform, the width of the rotating platform is the same as that of the lifting platform, the length direction of the rotating platform is arc-shaped at both ends, the rotating hole is arranged in the middle of the rotating platform and corresponds to the position of the rotating hole of the lifting platform, the extending end of the lifting hydraulic cylinder is fixedly connected with the lower end surface of the rotating platform, and the top of the screw nut is fixedly connected with the rotating platform.

4. The multi-functional walking jacking device for steel girder according to claim 1 or 3, characterized in that: The concave deviation rectifying platform sliding groove is arranged on the left and right sides of the lifting platform, the two deviation rectifying platform sliding grooves are parallel to each other, one deviation rectifying platform is embedded in the deviation rectifying platform sliding groove of one lifting platform, and the deviation rectifying hydraulic cylinder is arranged at the front and rear ends of each deviation rectifying platform sliding groove of the lifting platform.

5. The multi-functional walking straddle jacking device for steel beams according to claim 2, characterized in that: The cross section of the screw nut is "T" shaped, the outer diameter of the wing plate of the screw nut is greater than the diameter of the screw rod hole, so that the wing plate of the screw nut can be pressed on the upper surface of the base.

6. The multi-functional walking jacking device for steel girder according to claim 1 or 3, characterized in that: The top sleeve is fixedly connected with the top of the supporting screw rod, and the top sleeve has a spacing between the lifting platform after the extending of the lifting hydraulic cylinder.

7. The multi-functional walking straddle jacking device for steel beams according to claim 2, characterized in that: The motor is a servo motor with a built-in planetary gear reducer, the motor is arranged on the bottom plate in the screw rod cavity through the support, the output end of the motor is fixedly connected with the bevel gear set through the shaft coupling, the bevel gear set is composed of two bevel gears meshing with each other, the axes of the two bevel gears are perpendicular to each other, one bevel gear is connected with the motor, and the other bevel gear is fixedly connected with the outer side wall of the supporting screw rod.

8. The multi-functional striding jacking device for steel beams according to claim 7, characterized in that: In the middle of the outer side wall of the supporting lead screw, a limiting sleeve is sleeved between the bevel gear set and the lead screw nut, the outer side wall of the limiting sleeve is fixedly connected with the inner wall of the lead screw cavity of the base; wherein: the limiting sleeve is inserted with an upper bearing, the inner ring layer of the upper bearing is in abutment with the outer side wall of the supporting lead screw; a cover is arranged on the upper bearing to fix the upper bearing.

9. The multi-functional walking jacking device for steel girder according to claim 1 or 3, characterized in that: The arc-shaped detection disc is fixedly connected outside the width side of the jacking table, and a scale is marked on the detection disc; a corner measurer is arranged on one side of the jacking table in the direction of the detection disc, and the corner measurer is composed of a light source and a macro camera, both of which are electrically connected with the control room.

10. The multi-functional striding jacking device for steel beams according to claim 9, characterized in that: The arc angle of the detection disc is not more than 50°.

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