Orthogonal connecting device for main beams and construction method of orthogonal connecting device

Abstract

The invention relates to a main beam orthogonal connecting device of a heavy crane applied to bridge replacement and a construction method thereof, a cross beam walking mechanism frame is clamped below a longitudinal beam, and a cross beam driving mechanism is arranged on the side edge of the cross beam walking mechanism frame and drives a cross beam to move in the length direction of the longitudinal beam clamped in the cross beam walking mechanism frame; the running wheelbase of the heavy crane is changed; the longitudinal beam walking mechanism frame is clamped above the cross beam, a longitudinal beam driving mechanism is arranged on the side edge of the longitudinal beam walking mechanism frame and drives the longitudinal beam to move in the length direction of the cross beam clamped in the longitudinal beam walking mechanism frame, and the hoisting span of the heavy crane is changed; the cross beam walking mechanism frame and the longitudinal beam walking mechanism frame are orthogonally connected; the invention aims to solve the problem that the existing heavy crane cannot realize efficient and safe bridge renewal under complex and changeable working conditions due to the inherent structural form solidification and function singleness restriction.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to an orthogonal connection device for the main beam of a heavy-duty crane used for bridge replacement and its construction method. Background Technology

[0002] Existing bridge replacement projects typically employ highway bridge erecting machines and heavy-duty cranes. Their main structures (such as main beams, columns, and legs) are rigidly welded or fixed with high-strength bolts, resulting in an inability to adjust the structural span and the wheelbase of the traveling section. In actual bridge renovation projects, heavy-duty cranes with fixed structural spans cannot adjust their lifting span when encountering non-standard pier spacing or obstacles. Similarly, heavy-duty cranes with fixed traveling section wheelbases cannot adjust their wheelbase according to actual needs when encountering construction roads of varying widths, uneven bridge surfaces, and foundations with inconsistent bearing capacity. The inherent rigidity and limited functionality of existing heavy-duty cranes restrict their ability to achieve efficient and safe bridge renovation under complex and variable working conditions.

[0003] Therefore, it is desirable to have an orthogonal connection device for the main beam of a heavy-duty crane used for bridge replacement and its construction method that can solve the problems existing in the prior art. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an orthogonal connection device for the main beam of a heavy-duty crane used for bridge replacement, which enables the heavy-duty crane to adapt to the replacement of bridges with various spans under special foundation conditions. It aims to solve the problem that the heavy-duty crane cannot adjust the lifting span and the wheelbase of the traveling part, thereby affecting the safety, stability and timeliness of bridge replacement construction.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides an orthogonal connection device for a main beam. The main technical solution adopted for the movement of the crossbeam and longitudinal beam of a heavy-duty crane used in bridge replacement includes: a crossbeam traveling mechanism frame, a longitudinal beam traveling mechanism frame, a crossbeam drive mechanism, and a longitudinal beam drive mechanism.

[0008] The crossbeam traveling mechanism frame is mounted below the longitudinal beam. A crossbeam drive mechanism is installed on the side of the crossbeam traveling mechanism frame to drive the crossbeam to move along the length of the longitudinal beam mounted in the crossbeam traveling mechanism frame, thereby changing the traveling wheelbase of the heavy crane.

[0009] The longitudinal beam traveling mechanism frame is mounted above the crossbeam. A longitudinal beam drive mechanism is installed on the side of the longitudinal beam traveling mechanism frame to drive the longitudinal beam to move along the length of the crossbeam mounted in the longitudinal beam traveling mechanism frame, thereby changing the lifting span of the heavy crane.

[0010] The main beam is orthogonally connected between the cross beam traveling mechanism frame and the longitudinal beam traveling mechanism frame.

[0011] The application adopts the orthogonally connected cross beam traveling mechanism frame and longitudinal beam traveling mechanism frame, realizes the quick adjustment of the hoisting span and the traveling part axle distance of the heavy crane according to the actual engineering needs, and thus guarantees the safety, stability and timeliness of the bridge replacement construction.

[0012] Preferably, the overall structures of the cross beam traveling mechanism frame and the longitudinal beam traveling mechanism frame are respectively in C shape, the opening of the overall structure of the cross beam traveling mechanism frame faces upward, and the opening of the overall structure of the longitudinal beam traveling mechanism frame faces downward.

[0013] Preferably, the cross beam driving mechanism comprises a cross beam driving motor and a cross beam driving gear, the cross beam driving motor is arranged at the side of the cross beam traveling mechanism frame, the number of the cross beam driving motor is at least two, the number of the cross beam driving motor is the same as the number of the cross beam driving gear, the cross beam driving gear is installed below the cross beam driving motor, the cross beam driving gear is engaged with the rack arranged on the longitudinal beam, and the cross beam is driven to move along the length direction of the longitudinal beam.

[0014] Preferably, the cross beam driving mechanism further comprises a first steering transmission mechanism, the driving shaft of the cross beam driving motor is perpendicular to the gear shaft of the cross beam driving gear, and the driving shaft of the cross beam driving motor is connected with the cross beam driving gear through the first steering transmission mechanism.

[0015] Preferably, the longitudinal beam driving mechanism comprises a longitudinal beam driving motor and a longitudinal beam driving gear, the longitudinal beam driving motor is arranged at the side of the longitudinal beam traveling mechanism frame, the number of the longitudinal beam driving motor is at least two, the number of the longitudinal beam driving motor is the same as the number of the longitudinal beam driving gear, the longitudinal beam driving gear is installed above the longitudinal beam driving motor, the longitudinal beam driving gear is engaged with the rack arranged on the cross beam, and the longitudinal beam is driven to move along the length direction of the cross beam.

[0016] Preferably, the longitudinal beam driving mechanism further comprises a second steering transmission mechanism, the driving shaft of the longitudinal beam driving motor is perpendicular to the gear shaft of the longitudinal beam driving gear, and the driving shaft of the longitudinal beam driving motor is connected with the longitudinal beam driving gear through the second steering transmission mechanism.

[0017] Preferably, the main beam orthogonally connecting device further comprises a guide wheel, the guide wheel is arranged at the two sides of the cross beam traveling mechanism frame and the longitudinal beam traveling mechanism frame respectively, and the main beam orthogonally connecting device is driven to move along the axis direction of the length of the cross beam and the longitudinal beam.

[0018] Preferably, the main beam orthogonal connecting device further comprises a running wheel system arranged on the inner side of the cross beam running mechanism frame and the longitudinal beam running mechanism frame, and the running wheel system arranged on the upper and lower ends of the inner side of the cross beam running mechanism frame is correspondingly clamped on the upper and lower ends of the flange plate of the cross beam, and the running wheel system arranged on the upper and lower ends of the inner side of the longitudinal beam running mechanism frame is correspondingly clamped on the upper and lower ends of the flange plate of the longitudinal beam, so as to prevent the cross beam and the longitudinal beam from sliding when the cross beam driving mechanism and the longitudinal beam driving mechanism are started or braked.

[0019] Preferably, the running wheel system is a track-type running device, which prevents the flange plates of the cross beam and the longitudinal beam from being deformed.

[0020] A construction method of a main beam orthogonal connecting device comprises the following steps:

[0021] Step S01: The main beam orthogonal connecting device is installed at the orthogonal connecting position of the cross beam and the longitudinal beam of the heavy-duty crane, the cross beam running mechanism frame is clamped on the outer side of the flange plate of the longitudinal beam, and the longitudinal beam running mechanism frame is clamped on the outer side of the flange plate of the cross beam.

[0022] Step S02: The positioning of the cross beam is determined according to the running wheelbase requirement of the heavy-duty crane.

[0023] Step S03: The cross beam driving motor is started to drive the cross beam driving gear to rotate, the cross beam driving gear is engaged with the rack arranged on the longitudinal beam, and when the cross beam moves to the target position along the length direction of the longitudinal beam, the cross beam driving motor is braked to lock the position of the cross beam.

[0024] Step S04: The positioning of the longitudinal beam is determined according to the hoisting span requirement of the heavy-duty crane.

[0025] Step S05: The longitudinal beam driving motor is started to drive the longitudinal beam driving gear to rotate, the longitudinal beam driving gear is engaged with the rack arranged on the cross beam, and when the longitudinal beam moves to the target position along the length direction of the cross beam, the longitudinal beam driving motor is braked to lock the position of the longitudinal beam.

[0026] (Three) beneficial effects

[0027] The beneficial effects of the present application are as follows: the cross beam running mechanism frame arranged below the longitudinal beam of the heavy-duty crane is used to move the cross beam along the length direction of the longitudinal beam, so as to change the running wheelbase of the heavy-duty crane, the longitudinal beam running mechanism frame arranged above the cross beam of the heavy-duty crane is used to move the longitudinal beam along the length direction of the cross beam, so as to change the hoisting span of the heavy-duty crane, the orthogonal connection between the cross beam running mechanism frame and the longitudinal beam running mechanism frame is arranged at the intersection position of the cross beam and the longitudinal beam, and the heavy-duty crane can quickly adapt to the replacement of bridges with various spans. Attached Figure Description

[0028] Figure 1 This is a front view of the orthogonal connection device for the main beam of the present invention;

[0029] Figure 2 This is a front view of the orthogonal connection device for the main beam of the present invention;

[0030] Figure 3 This is a left-side view of the orthogonal connection device for the main beam of the present invention;

[0031] Figure 4 This is a top view of the orthogonal connection device for the main beam of the present invention;

[0032] Figure 5 It is an orthogonal connection device for the main beam of a heavy-duty crane used for bridge replacement, where the crossbeams and longitudinal beams move.

[0033] [Attached image labels]

[0034] 1: Crossbeam; 2: Crossbeam traveling mechanism frame; 3: Crossbeam drive motor; 4: Crossbeam drive gear; 5: Longitudinal beam; 6: Longitudinal beam traveling mechanism frame; 7: Longitudinal beam drive motor; 8: Longitudinal beam drive gear; 9: Rack; 10: Guide wheel; 11: Traveling wheel system; 12: Flange plate. Detailed Implementation

[0035] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. The directional terms "up," "down," "left," and "right" used herein are... Figure 2 The orientation is used as a reference.

[0036] The orthogonal connection device and construction method for the main beam proposed in this invention are applied to the movement of the crossbeam and longitudinal beam of a heavy-duty crane used for bridge replacement. The device includes: a crossbeam traveling mechanism frame, a longitudinal beam traveling mechanism frame, a crossbeam drive mechanism, and a longitudinal beam drive mechanism. The crossbeam traveling mechanism frame is positioned below the longitudinal beam, and a crossbeam drive mechanism is provided on the side of the crossbeam traveling mechanism frame to drive the crossbeam to move along the length of the longitudinal beam within the crossbeam traveling mechanism frame, thereby changing the travel wheelbase of the heavy-duty crane. The longitudinal beam traveling mechanism frame is positioned above the crossbeam, and a longitudinal beam drive mechanism is provided on the side of the longitudinal beam traveling mechanism frame to drive the longitudinal beam to move along the length of the crossbeam within the longitudinal beam traveling mechanism frame, thereby changing the lifting span of the heavy-duty crane. The crossbeam traveling mechanism frame and the longitudinal beam traveling mechanism frame are orthogonally connected.

[0037] The construction method for the orthogonal connection device of the main beam includes the following steps:

[0038] Step S01: the main beam orthogonal connecting device is installed at the orthogonal connection of the cross beam and the longitudinal beam of the heavy-duty crane, the cross beam running mechanism frame is clamped outside the flange plate of the longitudinal beam, and the longitudinal beam running mechanism frame is clamped outside the flange plate of the cross beam;

[0039] Step S02: according to the running axle distance requirement of the heavy-duty crane, the positioning of the cross beam is determined;

[0040] Step S03: the cross beam driving motor is started to drive the cross beam driving gear to rotate, the cross beam driving gear is engaged with the rack arranged on the longitudinal beam, and when the cross beam moves to the target position along the length direction of the longitudinal beam, the cross beam driving motor is braked to lock the position of the cross beam;

[0041] Step S04: according to the hoisting span requirement of the heavy-duty crane, the positioning of the longitudinal beam is determined;

[0042] Step S05: the longitudinal beam driving motor is started to drive the longitudinal beam driving gear to rotate, the longitudinal beam driving gear is engaged with the rack arranged on the cross beam, and when the longitudinal beam moves to the target position along the length direction of the cross beam, the longitudinal beam driving motor is braked to lock the position of the longitudinal beam.

[0043] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer, more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0044] Embodiment 1:

[0045] Referring to Figures 1 to 4 As shown in the drawings, the main beam orthogonal connecting device comprises a cross beam running mechanism frame 2 and a longitudinal beam running mechanism frame 6, the overall structure of the cross beam running mechanism frame 2 and the longitudinal beam running mechanism frame 6 is respectively in the shape of C, the opening of the overall structure of the cross beam running mechanism frame 2 faces upward, the opening of the overall structure of the longitudinal beam running mechanism frame 6 faces downward, and the cross beam running mechanism frame 2 and the longitudinal beam running mechanism frame 6 are orthogonally connected.

[0046] The cross beam driving motor 3 and the cross beam driving gear 4, two cross beam driving motors 3 are respectively arranged on the front side of the cross beam running mechanism frame 2, and two cross beam driving gears 4 are respectively installed below the corresponding cross beam driving motor 3, the driving shaft of the cross beam driving motor 3 is perpendicular to the gear shaft of the cross beam driving gear 4, and the driving shaft of the cross beam driving motor 3 is connected to the corresponding cross beam driving gear 4 through a first steering transmission mechanism.

[0047] Two longitudinal beam driving motors 7 are arranged on the right side of the longitudinal beam running mechanism frame 6 respectively, and two longitudinal beam driving gears 8 are installed above the corresponding longitudinal beam driving motor 7 respectively. The driving shaft of the longitudinal beam driving motor 7 is perpendicular to the gear shaft of the longitudinal beam driving gear 8, and the driving shaft of the longitudinal beam driving motor 7 is connected to the corresponding longitudinal beam driving gear 8 through a second steering transmission mechanism.

[0048] Two guide wheels 10 are arranged on the two sides of the cross beam running mechanism frame 2 and the longitudinal beam running mechanism frame 6 respectively.

[0049] Four running wheel systems 11 are arranged on the upper and lower ends of the inner side of the cross beam running mechanism frame 2 and the longitudinal beam running mechanism frame 6 respectively.

[0050] Embodiment 2:

[0051] Referring to Figure 5 As shown in the figure, the cross beam running mechanism frame 2 is clamped below the longitudinal beam 5, and the longitudinal beam running mechanism frame 6 is clamped above the cross beam 1. Four flange plates 12 are arranged along the length direction of the cross beam 1 and the longitudinal beam 5 respectively. The flange plates 12 are fixed and welded on the two sides of the cross beam 1 and the longitudinal beam 5 respectively. The longitudinal section of the flange plate 12 is rectangular, and the rack 9 is installed on the outer side of the flange plate 12.

[0052] Two cross beam driving motors 3 drive the corresponding two cross beam driving gears 4 to rotate respectively. The two cross beam driving gears 4 are engaged with the rack 9 on the flange plate 12 below the left side and the right side of the longitudinal beam 5 respectively, so as to drive the cross beam 1 to move along the length direction of the longitudinal beam 5.

[0053] Two longitudinal beam driving motors 7 drive the corresponding two longitudinal beam driving gears 8 to rotate respectively. The two longitudinal beam driving gears 8 are engaged with the rack 9 on the flange plate 12 above the front side and the rear side of the cross beam 1 respectively, so as to drive the longitudinal beam 5 to move along the length direction of the cross beam 1.

[0054] The guide wheel 10 drives the main beam orthogonal connecting device to move along the axis direction of the length of the cross beam 1 and the longitudinal beam 5.

[0055] Four running wheel systems 11 are arranged on the upper and lower ends of the inner side of the cross beam running mechanism frame 2, and are clamped on the upper and lower ends of the flange plate 12 above the front side and the rear side of the cross beam 1. Another four running wheel systems 11 are arranged on the upper and lower ends of the inner side of the longitudinal beam running mechanism frame 6, and are clamped on the upper and lower ends of the flange plate 12 below the left side and the right side of the longitudinal beam 5. The running wheel system 11 prevents the cross beam 1 and the longitudinal beam 5 from sliding when the cross beam driving motor 3 and the longitudinal beam driving motor 7 are started or braked. The running wheel system 11 is a caterpillar walking device, which increases the contact area between the running wheel system 11 and the flange plate 12, and prevents stress concentration from causing deformation of the flange plate 12.

[0056] Embodiment 3:

[0057] The construction method of the main beam orthogonal connecting device comprises the following steps:

[0058] Step S01: The main beam orthogonal connecting device is installed at the orthogonal connecting position of the cross beam 1 and the longitudinal beam 5 of the heavy-duty crane, the cross beam running mechanism frame 2 is clamped on the outer side of the flange plate 12 below the left and right sides of the longitudinal beam 5, and the longitudinal beam running mechanism frame 6 is clamped on the outer side of the flange plate 12 above the front and rear sides of the cross beam 1;

[0059] Step S02: The positioning of the cross beam 1 is determined according to the running axle distance requirement of the heavy-duty crane;

[0060] Step S03: The cross beam driving motor 3 is started to drive the cross beam driving gear 4 to rotate, the cross beam driving gear 4 is engaged with the rack 9 on the flange plate 12 below the left and right sides of the longitudinal beam 5, and the four running wheel systems 11 arranged on the inner side of the cross beam running mechanism frame 2 run on the upper and lower ends of the flange plate 12 below the left and right sides of the longitudinal beam 5, when the cross beam 1 moves to the target position along the length direction of the longitudinal beam 5, the cross beam driving motor 3 is braked to lock the position of the cross beam 1, and the running axle distance of the heavy-duty crane is changed;

[0061] Step S04: The positioning of the longitudinal beam 5 is determined according to the hoisting span requirement of the heavy-duty crane;

[0062] Step S05: The longitudinal beam driving motor 7 is started to drive the longitudinal beam driving gear 8 to rotate, the longitudinal beam driving gear 8 is engaged with the rack 9 on the flange plate 12 above the front and rear sides of the cross beam 1, and the other four running wheel systems 11 arranged on the inner side of the longitudinal beam running mechanism frame 6 run on the upper and lower ends of the flange plate 12 above the front and rear sides of the cross beam 1, when the longitudinal beam 5 moves to the target position along the length direction of the cross beam 1, the longitudinal beam driving motor 7 is braked to lock the position of the longitudinal beam 5, and the hoisting span of the heavy-duty crane is changed.

[0063] Embodiment 4:

[0064] The main beam orthogonal connecting device comprises four cross beam driving motors 3 and four cross beam driving gears 4, two cross beam driving motors 3 are arranged on the front side of the cross beam running mechanism frame 2 respectively, the other two cross beam driving motors 3 are arranged on the rear side of the cross beam running mechanism frame 2 respectively, and four cross beam driving gears 4 are installed below the corresponding cross beam driving motors 3 respectively.

[0065] Embodiment 5:

[0066] The main beam orthogonal connecting device comprises four longitudinal beam driving motors 7 and four longitudinal beam driving gears 8, two longitudinal beam driving motors 7 are arranged on the right side of the longitudinal beam running mechanism frame 6 respectively, the other two longitudinal beam driving motors 7 are arranged on the left side of the longitudinal beam running mechanism frame 6 respectively, and the four longitudinal beam driving gears 8 are installed below the corresponding longitudinal beam driving motors 7 respectively.

[0067] Embodiment 6:

[0068] The running wheel system 11 is a roller type walking device, and the running wheel system 11 is arranged at the upper and lower ends of the inner sides of the transverse beam running mechanism frame 2 and the longitudinal beam running mechanism frame 6 respectively.

[0069] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0070] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0071] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0072] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above-described embodiments within the scope of the present application.

Claims

1. A main beam orthogonal connection device, used for the movement of the crossbeam (1) and longitudinal beam (5) of a heavy-duty crane used in bridge replacement, characterized in that, include: The frame of the crossbeam traveling mechanism (2), the frame of the longitudinal beam traveling mechanism (6), the crossbeam drive mechanism and the longitudinal beam drive mechanism; The crossbeam traveling mechanism frame (2) is mounted below the longitudinal beam (5). A crossbeam driving mechanism is set on the side of the crossbeam traveling mechanism frame (2) to drive the crossbeam (1) to move along the length of the longitudinal beam (5) mounted in the crossbeam traveling mechanism frame (2), thereby changing the traveling wheelbase of the heavy crane. The longitudinal beam traveling mechanism frame (6) is mounted above the crossbeam (1). A longitudinal beam drive mechanism is set on the side of the longitudinal beam traveling mechanism frame (6) to drive the longitudinal beam (5) to move along the length direction of the crossbeam (1) mounted in the longitudinal beam traveling mechanism frame (6), thereby changing the lifting span of the heavy crane. The crossbeam traveling mechanism frame (2) and the longitudinal beam traveling mechanism frame (6) are orthogonally connected.

2. The orthogonal connection device for the main beam according to claim 1, characterized in that: The overall structure of the crossbeam traveling mechanism frame (2) and the longitudinal beam traveling mechanism frame (6) are C-shaped respectively. The opening of the overall structure of the crossbeam traveling mechanism frame (2) faces upward, and the opening of the overall structure of the longitudinal beam traveling mechanism frame (6) faces downward.

3. The orthogonal connection device for the main beam according to claim 2, characterized in that: The beam drive mechanism includes a beam drive motor (3) and a beam drive gear (4). The beam drive motor (3) is located on the side of the beam traveling mechanism frame (2). There are at least two beam drive motors (3). The number of beam drive motors (3) is the same as the number of beam drive gears (4). The beam drive gear (4) is installed below the beam drive motor (3). The beam drive gear (4) meshes with the rack (9) provided on the longitudinal beam (5) to drive the beam (1) to move along the length direction of the longitudinal beam (5).

4. The orthogonal connection device for the main beam according to claim 3, characterized in that: The beam drive mechanism further includes a first steering transmission mechanism. The drive shaft of the beam drive motor (3) is perpendicular to the gear shaft of the beam drive gear (4). The drive shaft of the beam drive motor (3) is connected to the beam drive gear (4) through the first steering transmission mechanism.

5. The orthogonal connection device for the main beam according to claim 2, characterized in that: The longitudinal beam drive mechanism includes a longitudinal beam drive motor (7) and a longitudinal beam drive gear (8). The longitudinal beam drive motor (7) is located on the side of the longitudinal beam traveling mechanism frame (6). There are at least two longitudinal beam drive motors (7). The number of longitudinal beam drive motors (7) is the same as the number of longitudinal beam drive gears (8). The longitudinal beam drive gear (8) is installed above the longitudinal beam drive motor (7). The longitudinal beam drive gear (8) meshes with a rack (9) provided on the crossbeam (1) to drive the longitudinal beam (5) to move along the length direction of the crossbeam (1).

6. The orthogonal connection device for the main beam according to claim 5, characterized in that: The longitudinal beam drive mechanism further includes a second steering transmission mechanism. The drive shaft of the longitudinal beam drive motor (7) is perpendicular to the gear shaft of the longitudinal beam drive gear (8). The drive shaft of the longitudinal beam drive motor (7) is connected to the longitudinal beam drive gear (8) through the second steering transmission mechanism.

7. The orthogonal connection device for the main beam according to claim 1, characterized in that: The main beam orthogonal connection device also includes guide wheels (10), which are respectively arranged on both sides of the crossbeam traveling mechanism frame (2) and the longitudinal beam traveling mechanism frame (6), so that the main beam orthogonal connection device can move along the axial direction of the length of the crossbeam (1) and the longitudinal beam (5).

8. The orthogonal connection device for the main beam according to claim 1, characterized in that: The orthogonal connection device of the main beam further includes a running wheel system (11), which is respectively disposed on the inner side of the crossbeam running mechanism frame (2) and the longitudinal beam running mechanism frame (6). The running wheel system (11) disposed on the upper and lower ends of the inner side of the crossbeam running mechanism frame (2) is correspondingly engaged with the upper and lower ends of the flange plate (12) of the crossbeam (1), and the running wheel system (11) disposed on the upper and lower ends of the inner side of the longitudinal beam running mechanism frame (6) is correspondingly engaged with the upper and lower ends of the flange plate (12) of the longitudinal beam (5), so as to prevent the crossbeam (1) and the longitudinal beam (5) from sliding when the crossbeam drive mechanism and the longitudinal beam drive mechanism start or brake.

9. The orthogonal connection device for the main beam according to claim 8, characterized in that: The running wheel system (11) is a tracked walking device to prevent deformation of the flange plates (12) of the crossbeam (1) and the longitudinal beam (5).

10. A construction method for a main beam orthogonal connection device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step S01: The main beam orthogonal connection device is installed at the orthogonal connection of the crossbeam (1) and the longitudinal beam (5) of the heavy crane. The crossbeam traveling mechanism frame (2) is clamped on the outside of the flange plate (12) of the longitudinal beam (5), and the longitudinal beam traveling mechanism frame (6) is clamped on the outside of the flange plate (12) of the crossbeam (1). Step S02: Determine the positioning of the crossbeam (1) according to the travel wheelbase requirements of the heavy-duty crane; Step S03: Start the beam drive motor (3) to drive the beam drive gear (4) to rotate. The beam drive gear (4) meshes with the rack (9) on the longitudinal beam (5). When the beam (1) moves to the target position along the length of the longitudinal beam (5), brake the beam drive motor (3) to lock the position of the beam (1). Step S04: Determine the positioning of the longitudinal beam (5) according to the lifting span requirements of the heavy-duty crane; Step S05: Start the longitudinal beam drive motor (7) to drive the longitudinal beam drive gear (8) to rotate. The longitudinal beam drive gear (8) meshes with the rack (9) provided on the crossbeam (1). When the longitudinal beam (5) moves to the target position along the length direction of the crossbeam (1), brake the longitudinal beam drive motor (7) to lock the position of the longitudinal beam (5).

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