CN115611173A - Front girder pitching mechanism and shore bridge - Google Patents
Front girder pitching mechanism and shore bridge Download PDFInfo
- Publication number
- CN115611173A CN115611173A CN202211096678.5A CN202211096678A CN115611173A CN 115611173 A CN115611173 A CN 115611173A CN 202211096678 A CN202211096678 A CN 202211096678A CN 115611173 A CN115611173 A CN 115611173A
- Authority
- CN
- China
- Prior art keywords
- section part
- rear section
- girder
- front section
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
Abstract
The application provides preceding girder every single move mechanism and bank bridge, include: the front girder comprises a front section part and a rear section part, the rear section part is hinged with the trapezoidal frame, and the front section part is hinged with the rear section part; the traction piece is connected between the trapezoidal frame and the front section part; when the bending angle of the front section part relative to the rear section part reaches a preset value in the process that the rear section part is lifted relative to the front girder, the traction piece is connected with the rear section part so as to keep the bending angle of the front section part relative to the rear section part at the preset value. So set up, through improving the traction system among the prior art, make it when keeping traction function, can also be connected with the back end part of preceding girder to the contained angle that keeps front end part and back end part is fixed, and then realize that the every single move of girder is folding before the gooseneck formula, need not to add link mechanism in the front on the girder, simple structure can adapt to higher longer bank bridge, girder weight and restriction bank bridge hoisting performance before can not increasing by a wide margin simultaneously.
Description
Technical Field
The application relates to the technical field of cranes, in particular to a front girder pitching mechanism and a shore bridge.
Background
A shore container crane, called a 'shore bridge' for short, is characterized in that in order to prevent typhoon and provide a ship parking space, a front girder of the shore bridge needs to be lifted up before a ship stops, as shown in figure 10, because a wharf has the requirement of aviation height limitation, two most commonly used methods for solving the requirements of aviation height limitation and the like of the wharf shore bridge at present are that the front girder is only lifted up by 20 degrees and the front girder is designed into a gooseneck type foldable structure.
The scheme that the front girder only rises by 20 degrees can prevent the girder from rising to be ultrahigh, but is not beneficial to preventing typhoon and providing a ship parking space; the front girder is designed into a gooseneck type foldable structure, so that the problem of height limitation can be effectively solved, and the problems of typhoon prevention and ship parking space can be solved, however, a connecting rod mechanism needs to be added to the gooseneck type front girder structure as shown in fig. 11, so that the front girder structure is complex, the dead weight is heavy, the design length of the front girder is severely limited, and the front girder is not suitable for being applied to a shore bridge with a longer front girder.
Disclosure of Invention
In view of this, the present application provides a front girder pitching mechanism and a shore bridge, which can realize gooseneck type folding of a front girder without adding an additional link mechanism.
In order to achieve the above purpose, the present application provides the following technical solutions:
a front rail pitch mechanism comprising:
the front girder comprises a front section part and a rear section part, the rear section part is hinged with the trapezoidal frame, and the front section part is hinged with the rear section part so that the front section part can be bent relative to the rear section part;
a traction member connected between the trapezoidal frame and the front section part and capable of being connected with the rear section part;
wherein, when the bending angle of the front section relative to the rear section reaches a preset value during the process of the rear section being raised relative to the front girder, the pulling member is connected with the rear section to maintain the bending angle of the front section relative to the rear section at the preset value.
Optionally, a first limiting seat is disposed above one end of the rear section portion close to the front section portion, the pulling member includes a first pull rod, and when the bending angle of the front section portion relative to the rear section portion reaches the preset value, two ends of the first pull rod are connected to the first limiting seat and the front section portion respectively, and are distributed in a triangular manner with a hinge shaft between the front section portion and the rear section portion.
Optionally, a second limiting seat is arranged above one end, close to the rear section, of the front section, the pulling piece further comprises a second pull rod, one end of the second pull rod is hinged to the first pull rod, the other end of the second pull rod is hinged to the front section, when the bending angle of the front section relative to the rear section reaches the preset value, two ends, limited by the first pull rod, of the first pull rod are respectively connected with the first limiting seat and the second limiting seat, and are in triangular distribution with a hinge shaft between the front section and the rear section.
Optionally, when the bending angle of the front section part relative to the rear section part reaches the preset value, the distance between the first limiting seat and the second limiting seat is equal to the length of the first pull rod.
Optionally, one end of the first pull rod, which is far away from the front section part, is provided with a first limiting shaft, the first limiting seat is provided with a first limiting groove for the first limiting shaft to be embedded in, and a notch of the first limiting groove faces away from the front section part.
Optionally, the first limiting seat is provided with a guide portion to guide the first limiting shaft into the first limiting groove.
Optionally, the first limiting groove is gradually enlarged along a direction from the groove bottom to the groove opening.
Optionally, the first limit shaft is provided as a hinge shaft at the end of the first pull rod.
Optionally, one end of the second pull rod, which is far away from the front section part, is provided with a second limiting shaft, the second limiting seat is provided with a second limiting groove for the second limiting shaft to be embedded in, and a notch of the second limiting groove faces the pulling piece.
Optionally, the first tie rod is provided in a plate shape or a tube shape.
A shore bridge comprises a front girder pitching mechanism, wherein the front girder pitching mechanism is the front girder pitching mechanism.
The utility model provides a preceding girder every single move mechanism and bank bridge, in the in-process that preceding girder rises for the trapezoidal frame, the wire rope of every single move winding mechanism pulls back segment part and upwards rotates for the trapezoidal frame, simultaneously, because the effort of tractive spare is received to the anterior segment part, the anterior segment part rotates downwards for the back segment part under self action of gravity, along with the back segment part for the angle increase of trapezoidal frame rise (the contained angle that the back segment part formed with the trapezoidal frame reduces), the bending angle increase of anterior segment part for the back segment part (the contained angle that anterior segment part and back segment part formed reduces), and the tractive spare that pulls the anterior segment part is close to gradually with the back segment part that rises, when the bending angle of current segment part for the back segment part reaches the default, the tractive spare is connected with the back segment part, so that the tractive spare is connected between anterior segment part and back segment part, through two tie points of tractive spare for anterior segment part and back segment part, and the pin joint point of anterior segment part and back segment part, form three points fixed, and realize the angle fixed to the anterior segment part and back segment part, and then keep the angle of anterior segment part at the back segment part in the preset angle. So set up, through improving the traction system among the prior art, make it when keeping traction function, can also be connected with the back end part of preceding girder to the contained angle that keeps front end part and back end part is fixed, and then realize that the every single move of girder is folding before the gooseneck formula, need not to add link mechanism in the front on the girder, simple structure can adapt to higher longer bank bridge, girder weight and restriction bank bridge hoisting performance before can not increasing by a wide margin simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a front longeron shown in some embodiments, looking up behind it;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic diagram illustrating the attachment of a first pull rod according to some embodiments;
FIG. 4 is a diagram illustrating a front girder raising process according to some embodiments;
FIG. 5 is a state diagram illustrating a front rail positioned horizontally according to some embodiments;
FIG. 6 is a state diagram illustrating a front girder raised 3 degrees in elevation according to some embodiments;
FIG. 7 is a diagram illustrating a front longeron being raised 5 degrees in accordance with certain embodiments;
FIG. 8 is a diagram illustrating a front longeron in a 9 degree up position according to some embodiments;
FIG. 9 illustrates a front longeron in a 20 degree overhead position according to some embodiments;
FIG. 10 is a view illustrating a conventional front side frame in a prior art elevation process;
fig. 11 is a view showing a front frame of a prior art front frame constructed in a gooseneck-type foldable structure.
In fig. 1-9: 1. a front section portion; 2. a rear section portion; 3. a pulling member; 4. a ladder frame; 5. a pitch winding mechanism; 6. a first limiting seat; 7. a second limiting seat; 31. a first pull rod; 32. a second pull rod; 33. a first limit shaft; 34. a second limiting shaft.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1 to 9, the present embodiment provides a front girder pitching mechanism, which includes a front girder and a pulling member 3, one end of the front girder is hinged to a ladder frame 4 so that the front girder can be raised (rotated upward) with respect to the ladder frame 4, specifically, a pitching winding mechanism 5 is provided between the front girder and the ladder frame 4, and the front girder is pulled up by a wire rope of the pitching winding mechanism 5.
The front girder comprises a front section part 1 and a rear section part 2, wherein the rear section part 2 is hinged with the ladder frame 4 so that the rear section part 2 can be lifted up relative to the ladder frame 4, specifically, a pitching winding mechanism 5 is arranged between the rear section part 2 and the ladder frame 4, and the front girder is pulled up through a steel wire rope of the pitching winding mechanism 5; the front section part 1 is hinged with the rear section part 2, so that the front section part 1 can be bent relative to the rear section part 2, and when the rear section part 2 is tilted up relative to the trapezoidal frame 4, the front section part 1 is influenced by self gravity and rotates (bends) downwards relative to the rear section part 2, so that the whole front girder is bent (folded).
The pulling member 3 is connected between the ladder frame 4 and the front section 1 for pulling the front section 1 and forming a pulling system to maintain the relative position of the front section 1 and the ladder frame 4, i.e. when the front girder is placed horizontally, the pulling member 3 is tightened and the front girder is restricted from rotating downwards relative to the ladder frame 4. In particular, the traction means 3 are provided in the form of a plurality of tie rod articulations, i.e. front tie rods of the prior art, but of course also in the form of rope structures or chain structures.
Specifically, the ends of the front section part 1 and the rear section part 2 are abutted, and the hinge position of the front section part 1 and the rear section part 2 is located at the lower part of the ends of the front section part 1 and the rear section part 2, so that the front section part 1 can only rotate downwards relative to the rear section part 2, but cannot rotate upwards relative to the rear section part 2, and the stability of the front girder when being horizontally placed is ensured.
In the process that a front girder is lifted up relative to a ladder-shaped frame 4, a rear section part 2 is pulled by a steel wire rope of a pitching winding mechanism 5 to rotate upwards relative to the ladder-shaped frame 4, meanwhile, because a front section part 1 is under the action of a pulling part 3, the front section part 1 rotates downwards relative to the rear section part 2 under the action of self gravity, along with the increase of the lifting angle of the rear section part 2 relative to the ladder-shaped frame 4 (the included angle formed by the rear section part 2 and the ladder-shaped frame 4 is reduced), the bending angle of the front section part 1 relative to the rear section part 2 is increased (the included angle formed by the front section part 1 and the rear section part 2 is reduced), the pulling part 3 pulling the front section part 1 is gradually close to the lifting rear section part 2, when the bending angle of the front section part 1 relative to the rear section part 2 reaches a preset value, the pulling part 3 is connected with the rear section part 2, so that the pulling part 3 is connected between the front section part 1 and the rear section part 2, two connection points of the front section part 1 and the rear section part 2, and the front section part and the rear section part are fixed, and the hinge points of the front section part 1 and the rear section part 2 are kept at the preset value, and the three fixed point, and the rear section part is kept at the preset value, and the rear section part 2.
The preset value can be set according to actual requirements, for example, when the rear section 2 is tilted up by 80 degrees, and the front section 1 needs to be kept horizontal, the preset value can be set to 80 degrees.
So set up, through improving the traction system among the prior art, make it when keeping the tractive function, can also be connected with the back end part 2 of preceding girder to the contained angle that keeps anterior segment part 1 and back end part 2 is fixed, and then the every single move of girder is folding before realizing the gooseneck formula, need not to add link mechanism in the front on the girder, simple structure can adapt to higher longer bank bridge, girder weight and restriction bank bridge lifting performance before can not increasing by a wide margin simultaneously.
In some preferred schemes, the rear portion 2 is provided with a first position-limiting seat 6, and the first position-limiting seat 6 is disposed above one end of the rear portion 2 close to the front portion 1, so that the first position-limiting seat 6 protrudes from the upper surface of the rear portion 2, so as to receive the pulling element 3. Furthermore, the pulling member 3 has a first pulling rod 31, the first pulling rod 31 is a section of the pulling member 3 close to the front section portion 1, one end of the first pulling rod 31 is connected with the front section portion 1, and the other end can be connected with the first limit seat 6. In-process that back end part 2 is raised up for trapezoidal frame 4, when anterior segment part 1 reached the default for the angle of buckling of back end part 2, first pull rod 31 is connected with first spacing seat 6, so that the both ends of first pull rod 31 are connected fixedly with first spacing seat 6 and anterior segment part 1 respectively, the both ends of first pull rod and the articulated shaft between anterior segment part and the back end part are triangular distribution simultaneously, so that be connected between anterior segment part and the back end part and form three point support fixed through above three, and then keep the angle of buckling of anterior segment part for the back end part at the default. Like this, the articulated shaft through the both ends of first pull rod and between anterior segment part and the back end part realizes that the triangular supports between anterior segment part and the back end part is fixed, simple structure, and is convenient for realize stable connection.
Here, since the first pull rod 31 needs to bear the weight of the front section 1, and the first pull rod 31 is provided in a plate shape or a tubular shape, the first pull rod 31 can have strong stability and is not easy to bend and deform, thereby ensuring structural reliability.
Further, a second stopper seat 7 is disposed on the front section 1, and the second stopper seat 7 is disposed above an end of the front section 1 close to the rear section 2, so that the second stopper seat 7 protrudes from an upper surface of the front section 1. Furthermore, the pulling element 3 has a second pulling rod 32, the second pulling rod 32 is a section close to the front section 1, specifically, two ends of the second pulling rod 32 are respectively hinged with the front section 1 and the first pulling rod 31 to form a connection of the first pulling rod 31 and the front section 1.
As shown in fig. 6-9, in the process of raising the rear section part 2 relative to the ladder frame 4, the front section part 1 rotates downward relative to the rear section part 2, and meanwhile, the second pull rod 32 of the pulling member 3 gradually fits to the front section part 1 until the second pull rod 32 contacts the second limit seat 7, and then the first pull rod 31 of the pulling member 3 rotates downward relative to the second pull rod 32 and gradually approaches the rear section part 2 until the first pull rod 31 contacts the first limit seat 6, and when the bending angle of the front section part 1 relative to the rear section part 2 reaches a preset value, one end of the first pull rod 31 is connected with the first limit seat 6 (for example, by a snap connection or a barb connection), and the other end is connected with the second limit seat (for example, by a snap connection or a support connection), so that the first pull rod 31 is limited between the first limit seat 6 and the second limit seat 7. The first pull rod is connected with the first limiting seat in a buckling connection or a barb connection mode, the first pull rod is connected with the second supporting seat in a supporting connection mode, the first pull rod is connected with the front section part through the second pull rod and limited on the second limiting seat, and therefore the connection relation of the first pull rod and the second limiting seat is formed. Meanwhile, when the bending angle of the front section part 1 relative to the rear section part 2 reaches a preset value, two ends of the first pull rod (or the first limit seat and the second limit seat) and the hinge shaft between the front section part and the rear section part are distributed in a triangular mode, so that the front section part and the rear section part are connected to form three-point support and are fixed through the three parts, and the bending angle of the front section part relative to the rear section part is kept at the preset value.
Like this, support tractive spare 3 through protruding in the spacing seat 7 of second of anterior segment part 1, rethread is protruding to be connected tractive spare 3 in the first spacing seat 6 of posterior segment part 2, can accurately reliably keep anterior segment part 1 at the default for the angle of buckling of posterior segment part 2, first pull rod 31 passes through second pull rod 32 and connects anterior segment part 1 simultaneously, can make tractive spare 3 keep away from posterior segment part 2 with the hookup location of anterior segment part 1, promote tractive spare 3 to anterior segment part 1's tractive stability.
In order to enable the two ends of the first pull rod to be connected to the first limiting seat and the second limiting seat in a well-positioned manner, when the bending angle of the front section part relative to the rear section part reaches a preset value, the distance between the first limiting seat and the second limiting seat is equal to the length of the first pull rod, and after the second pull rod is in contact with or connected with the second limiting seat, the first pull rod rotates downwards relative to the second pull rod, and the end part of the first pull rod can be just connected with the first limiting seat.
As shown in fig. 2-3, the first pull rod 31 is provided with a first limiting shaft 33, the first limiting seat 6 is located at one end of the first pull rod 31 away from the front section 1, and a first limiting groove is provided on the first limiting seat 6, and a notch of the first limiting groove faces a direction away from the front section 1 to form a barb. The first limiting shaft 33 is matched with the first limiting groove, so that the first limiting shaft 33 can be embedded into the first limiting groove, when the first limiting shaft 33 is embedded into the first limiting groove, because the notch of the first limiting groove faces the direction away from the front section part 1, the first limiting groove can apply a force away from the front section part 1 to the first limiting shaft 33, namely, the force applied to the first pull rod 31 by the first limiting seat 6 is in the direction away from the front section part 1, and meanwhile, the other end of the first pull rod 31 is connected with the front section part 1, so that the force applied to the first pull rod 31 by the front section part 1 is in the direction away from the rear section part 2, and further, the rotation of the front section part 1 relative to the rear section part 2 is limited by the first pull rod 31. So, realize being connected of first pull rod 31 and back end part 2 through the form of barb, simple structure, reliable and stable promotes the convenience of connecting.
Of course, in other embodiments, the first limit shaft 33 may be disposed on the first limit seat 6, and the first limit groove may be disposed on the first pull rod 31, which will not be described in detail herein.
Specifically, the first limit grooves may be provided in two and arranged side by side, the first limit shafts 33 are provided in two and respectively disposed at two sides of the first pull rod 31, and the two first limit shafts 33 are embedded into the two first limit grooves at the same time, so as to realize the connection between the first pull rod 31 and the first limit seat 6. Or, there may be one first limiting groove, both ends of the first limiting shaft 33 are connected to the first pull rod 31, and the first limiting groove is connected to the middle of the first limiting shaft 33.
In some preferred schemes, the first position-limiting seat 6 is provided with a guiding portion for guiding the first position-limiting shaft 33 into the first position-limiting groove, and in the process of raising the rear section part 2 relative to the ladder frame 4, the first pull rod 31 of the pulling member 3 rotates downward relative to the second pull rod 32 and gradually approaches the rear section part 2 until the first pull rod 31 contacts the first position-limiting seat 6, at this time, the first pull rod 31 (or the first position-limiting shaft 33) contacts the guiding portion, and the rear section part 2 continues to raise, so that the first pull rod 31 (or the first position-limiting shaft 33) slides along the guiding portion until the first position-limiting shaft 33 displaces into the first position-limiting groove, and thus, the first position-limiting shaft 33 can be accurately embedded into the first position-limiting groove by the guiding function of the guiding portion, and connection between the first pull rod 31 and the rear section part 2 is realized.
Specifically, a lateral wall of the limiting groove close to the rear section part 2 extends towards the direction away from the front section part 1, so as to form a guide part, and when the first pull rod 31 contacts the rear section part 2, the first limiting shaft 33 contacts with the guide part, so as to realize guiding. Alternatively, when the first retaining grooves are provided in two side by side, the guide portion is provided between the two first retaining grooves, and when the first pull rod 31 is in contact with the rear section part 2, the first pull rod 31 is located between the two first retaining grooves and is in contact with the guide portion, so that the first pull rod 31 is guided along the guide portion.
The first limiting groove gradually expands along the direction from the groove bottom to the groove opening, so that when the front girder rotates downwards relative to the ladder-shaped frame 4, the first limiting shaft 33 can be conveniently separated from the first limiting groove, and the connection between the first pull rod 31 and the first limiting seat 6 is further released, so that the front section part 1 is pulled by the pulling piece 3 to rotate upwards relative to the rear section part 2.
Here, the first limit shaft 33 is provided as an articulated shaft at the end of the first pull rod 31, so that a new structure is not required to be added by using the original structural member of the first pull rod 31, thereby saving cost and improving reliability. Specifically, the end of the first pull rod 31 is provided with a hinge shaft, and the hinge shaft is hinged to the pull rod adjacent to the first pull rod 31, and two ends of the hinge shaft of the first pull rod 31 extend and protrude from two sides of the first pull rod 31 and the adjacent pull rod, so as to form two first limiting shafts 33.
As shown in fig. 2-3, the second pull rod 32 is provided with a second limiting shaft 34, the second limiting shaft 34 is disposed at one end far away from the front section part 1, and a second limiting groove is disposed on the second limiting seat 7, and a notch of the second limiting groove faces the pulling member 3, so that the second limiting shaft 34 extends into the second limiting groove. The second limiting groove is matched with the second limiting shaft 34, so that the second limiting shaft 34 is embedded into the second limiting groove, and because the notch of the second limiting groove faces the traction piece 3, namely the direction away from the front section part 1, when the second pull rod 32 rotates downwards relative to the front section part 1 and is gradually attached to the front section part 1, the second limiting groove can be used for embedding the second limiting shaft 34 and supporting the second limiting shaft 34, so that the second pull rod 32 and the front section part 1 are relatively fixed, and further the first pull rod 31 rotates downwards relative to the second pull rod 32 and is connected with the first limiting seat 6 of the rear section part 2, and better connection reliability is achieved.
Specifically, the second limit seat 7 is provided as an articulated shaft between the first pull rod 31 and the second pull rod 32, and the reliability is improved by using the original structural member without adding a new structure.
The embodiment of the application provides a bank bridge, girder every single move mechanism before the aforesaid, so set up, through improving the traction system among the prior art, make it when keeping the tractive function, can also be connected with back end part 2 of preceding girder, with the contained angle that keeps anterior segment part 1 and back end part 2 fixed, and then the every single move of girder is folding before realizing the gooseneck formula, need not to add link mechanism in the front on the girder, moreover, the steam generator is simple in structure, can adapt to higher longer bank bridge, girder weight and restriction bank bridge hoisting performance before can not increasing by a wide margin simultaneously.
In addition, please refer to the above description about the front girder pitching mechanism for other beneficial effects brought by the shore bridge, which will not be described herein again.
The basic principles of the present application have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present application are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. As used herein, the words "or" and "refer to, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used for clearly explaining the technical solutions, and are not used for limiting the protection scope of the present application.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A front rail pitch mechanism, comprising:
the front girder comprises a front section part and a rear section part, the rear section part is hinged with the trapezoidal frame, and the front section part is hinged with the rear section part so that the front section part can be bent relative to the rear section part;
a traction member connected between the trapezoidal frame and the front section part and capable of being connected with the rear section part;
when the bending angle of the front section part relative to the rear section part reaches a preset value in the process that the rear section part is lifted relative to the front girder, the traction piece is connected with the rear section part so as to keep the bending angle of the front section part relative to the rear section part at the preset value.
2. The front girder pitching mechanism according to claim 1, wherein a first stopper seat is provided above an end of the rear section close to the front section, and the pulling member includes a first pulling rod, and when the bending angle of the front section with respect to the rear section reaches the predetermined value, two ends of the first pulling rod are respectively connected to the first stopper seat and the front section, and are in triangular distribution with the hinge shaft between the front section and the rear section.
3. The front girder pitching mechanism according to claim 2, wherein a second limiting seat is provided above an end of the front section close to the rear section, the pulling member further includes a second pull rod, one end of the second pull rod is hinged to the first pull rod, the other end of the second pull rod is hinged to the front section, when the bending angle of the front section relative to the rear section reaches the predetermined value, two ends of the first pull rod are respectively connected to the first limiting seat and the second limiting seat, and are in triangular distribution with the hinge shaft between the front section and the rear section.
4. The front girder pitch mechanism according to claim 3, wherein a distance between the first stopper seat and the second stopper seat is equal to a length of the first rod when the bending angle of the front section with respect to the rear section reaches the predetermined value.
5. A front girder pitch mechanism according to claim 3, wherein an end of the first link remote from the front section is provided with a first stopper shaft, the first stopper seat is provided with a first stopper groove into which the first stopper shaft is fitted, and a notch of the first stopper groove faces away from the front section.
6. The front girder pitch mechanism of claim 5, wherein the first stopper seat is provided with a guide portion to guide the first stopper shaft into the first stopper groove.
7. The front girder pitch mechanism of claim 5, wherein the first restraint slot is tapered in a slot bottom to slot opening direction.
8. The front girder pitch mechanism of claim 5, wherein the first restraint shaft is provided as a hinge shaft of an end of the first tension rod.
9. The front girder pitch mechanism according to claim 3, wherein an end of the second tie bar remote from the front section is provided with a second stopper shaft, the second stopper seat is provided with a second stopper groove into which the second stopper shaft is fitted, and a notch of the second stopper groove faces the pulling member.
10. A shore bridge comprising a front girder pitch mechanism, wherein said front girder pitch mechanism is a front girder pitch mechanism according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211096678.5A CN115611173A (en) | 2022-09-08 | 2022-09-08 | Front girder pitching mechanism and shore bridge |
| PCT/CN2022/139559 WO2024051026A1 (en) | 2022-09-08 | 2022-12-16 | Front girder pitching mechanism and quay crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211096678.5A CN115611173A (en) | 2022-09-08 | 2022-09-08 | Front girder pitching mechanism and shore bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115611173A true CN115611173A (en) | 2023-01-17 |
Family
ID=84859687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211096678.5A Pending CN115611173A (en) | 2022-09-08 | 2022-09-08 | Front girder pitching mechanism and shore bridge |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115611173A (en) |
| WO (1) | WO2024051026A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225397C (en) * | 2003-06-27 | 2005-11-02 | 上海港口机械制造厂 | Shoreside span structure type crane |
| EP1514832A1 (en) * | 2003-09-15 | 2005-03-16 | Jean-Marc Yerly | Lifting device |
| US8875447B2 (en) * | 2012-06-21 | 2014-11-04 | Superior Energy Services-North America Services, Inc. | Mast and guy wire systems for use with long lateral completion systems and method |
| CN103318781B (en) * | 2012-11-01 | 2015-05-13 | 上海振华重工(集团)股份有限公司 | Crane provided with folding arm and beams |
| ES2501366B1 (en) * | 2014-03-28 | 2015-06-11 | Jaso Equipos De Obras Y Construcciones, S.L. | Crane boom tower with boom lift without cables |
| CN105417394A (en) * | 2015-12-23 | 2016-03-23 | 三一海洋重工有限公司 | Quayside container crane |
| CN106395619B (en) * | 2016-12-08 | 2019-02-01 | 上海振华重工(集团)股份有限公司 | Truss-like gantry crane girder and truss-like gantry crane |
| CN113501447A (en) * | 2021-07-08 | 2021-10-15 | 徐工集团工程机械股份有限公司建设机械分公司 | Crane and method for lifting main arm of crane |
-
2022
- 2022-09-08 CN CN202211096678.5A patent/CN115611173A/en active Pending
- 2022-12-16 WO PCT/CN2022/139559 patent/WO2024051026A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024051026A1 (en) | 2024-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7438504B2 (en) | Arrangement for anchoring a floating structure | |
| KR102009620B1 (en) | An antideflection structure for a horizontal arm of a traffic lamp pole | |
| CN103670908A (en) | Transport system for a wind turbine blade | |
| KR102095210B1 (en) | Mooring installations for floating offshore wind power generators | |
| CN115611173A (en) | Front girder pitching mechanism and shore bridge | |
| CN102491193B (en) | Crane super-lifting device and all-terrain crane with the crane super-lifting device | |
| CN212222210U (en) | Combined double-beam cantilever crane | |
| CN202337655U (en) | Super-lifting device of crane and whole ground crane | |
| US7219810B2 (en) | Mobile crane with elongated boom | |
| CN112030776A (en) | Bridge floating-towing erection method | |
| US20070095610A1 (en) | Lift ladder | |
| CN207354165U (en) | One kind is without longeron photovoltaic bracket | |
| CN212389475U (en) | Bank building device and bank building type wind power installation ship | |
| WO2015090413A1 (en) | Apparatus for generating power from sea currents | |
| CN110080121B (en) | Hanging basket uplink system and construction method | |
| CN112262098A (en) | Mobile crane with two-part secondary boom and method for erecting a secondary boom system of such a mobile crane | |
| CN216807906U (en) | Anti-falling structure and hoisting equipment | |
| CN216517755U (en) | Hook type extension ladder | |
| CN216405129U (en) | System suitable for arch rib middle section promotes | |
| CN220457313U (en) | Saddle-shaped fixing device for middle cable of flexible photovoltaic bracket | |
| CN215626359U (en) | Arm head structure and crane | |
| CN216374892U (en) | Stern anchor frame overload test support frame | |
| CN210526776U (en) | Slotted brucs anchor | |
| CN216734668U (en) | Anchor frame for enabling anchor to automatically fall | |
| JP2019156617A (en) | Quay crane and control method of quay crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |