CN113247787A - Rotary upper support and swing arm type tower crane - Google Patents
Rotary upper support and swing arm type tower crane Download PDFInfo
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- CN113247787A CN113247787A CN202110596987.8A CN202110596987A CN113247787A CN 113247787 A CN113247787 A CN 113247787A CN 202110596987 A CN202110596987 A CN 202110596987A CN 113247787 A CN113247787 A CN 113247787A
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- plate
- ear
- balance arm
- hinge point
- ear plate
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- 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
- B66C23/16—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 supported by columns, e.g. towers having their lower end mounted for slewing movements
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- 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
- B66C23/64—Jibs
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- 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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
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- 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
- B66C23/84—Slewing gear
Abstract
The invention discloses a rotary upper support and a swing arm type tower crane in the technical field of tower cranes, wherein the left side and the right side of a rotary upper support body are symmetrically provided with lug plate assemblies, and each lug plate assembly comprises an upper lug plate arranged at the upper part of the lug plate assembly and a balance arm hanging lug plate arranged at one end part of the lug plate assembly; the two ends of the upper ear plate are respectively provided with a crane jib mounting hinge point and an A-shaped frame mounting hinge point, the crane jib mounting hinge point and the A-shaped frame mounting hinge point are oppositely arranged on the ear plates on the two sides and are positioned on the two sides of the rotation center, and the crane jib mounting hinge point is positioned at one end of the upper ear plate, which is far away from the balance arm hanging and connecting ear plate. The invention is suitable for a movable arm tower crane, can offset the horizontal force of a crane boom and an A-shaped frame, has reasonable stress on the upper ear plate, realizes the preposition of a hinge point of the crane boom, reduces the forward tilting moment of the whole crane and has good stability; the load of the balance arm is reduced, and the bearing capacity of the balance arm is improved; the structure atress is more reasonable to improve the security and the stability that the complete machine bore a weight of.
Description
Technical Field
The invention relates to a rotary upper support and a swing arm type tower crane, and belongs to the technical field of tower cranes.
Background
The swing arm tower crane is a very important hoisting machine in the building industry due to the characteristics of small turning radius, large lifting height and the like. The rotary upper support is a key part for connecting the balance arm and the crane boom, transfers the loading load to the tower body, keeps the balance of the tower crane, and ensures the safety and stability of the tower crane in the operation process.
The boom mounting hinge point and the A support mounting hinge point of the existing swing arm tower crane are both arranged on the balance arm, the load of the boom is transferred on the balance arm, and the load of the balance arm is larger. The boom hinge point is arranged at the rear side of the rotation center, the boom is longer, the forward tilting moment of the boom tower crane is larger, and the safety and the stability of the whole vehicle operation are influenced; and the crane boom is not easy to install, and the cost is higher. The stress of the upper rotary support is concentrated on one side of the rotary support, and the stress is unbalanced; the radius of the rotary support is large, and the cost is high. In the prior art, the upper support of the tower crane has a complex structure and is difficult to process; the defects of difficult installation of the rotary support, waste of maintenance cost and the like are caused.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a rotary upper support and a swing-arm type tower crane.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a rotary upper support comprises a body, wherein ear plate assemblies are symmetrically arranged at the left side and the right side of the body, and each ear plate assembly comprises an upper ear plate arranged at the upper part of the ear plate assembly and a balance arm hanging ear plate arranged at one end part of the ear plate assembly;
the two ends of the upper ear plate are respectively provided with a crane jib mounting hinge point and an A-shaped frame mounting hinge point, the crane jib mounting hinge point and the A-shaped frame mounting hinge point are oppositely arranged on the upper ear plates at the two sides, and the crane jib mounting hinge point is positioned at one end of the upper ear plate far away from the balance jib hanging and connecting ear plate;
the rotation central axis of the body is positioned between the upper ear plates on the two sides, and is positioned between the connecting line of the crane boom mounting hinge points on the two sides and the connecting line of the A-shaped frame mounting hinge points on the two sides.
According to the technical scheme, the crane boom mounting hinge point and the A-shaped frame mounting hinge point are oppositely arranged on the upper ear plates on two sides and are arranged on two sides of the rotation center, so that the horizontal force of the crane boom and the bracket A can be offset, and the upper ear plates are stressed reasonably; the boom mounting hinge point is arranged in front, and the amplitude of the boom is larger; when the maximum amplitude of the boom is designed, the length of the boom is shortened, the forward tilting moment of the whole machine is reduced, and the performance of the whole machine is improved. And the boom mounting hinge point and the A-shaped frame mounting hinge point are both arranged on the rotary upper support, the balance arm is loaded and descended, and the bearing capacity of the balance arm can be improved.
Meanwhile, the front side and the rear side of the rotary upper support are symmetrically stressed, horizontal force is offset, rotary stress is reduced, and the bearing capacity of the rotary support is stronger; the gyration radius is reduced, and the cost of the gyration support is reduced.
Further, the body further comprises an upper cover plate, a ring plate, a lower cover plate and rib plates, the upper cover plate and the lower cover plate are arranged in a vertical parallel mode, the ring plate and the rib plates are vertically arranged between the upper cover plate and the lower cover plate, and the rib plates are fixedly connected with the periphery of the ring plate, the upper cover plate and the lower cover plate, so that the upper cover plate, the ring plate, the lower cover plate and the rib plates form a box body structure, and the upper support forms a stable structure. The ear plate assembly is oppositely arranged on one opposite side of the box body structure.
Furthermore, the body also comprises a front coaming and a rear coaming, in the ear plate assembly, one end of the upper ear plate is connected with the balancing arm hanging ear plate, and the other end of the upper ear plate is connected with the side coaming;
the front coaming and the rear coaming are oppositely arranged on the other opposite side of the box body structure, the upper end and the lower end of the front coaming and the rear coaming are fixedly connected with an upper cover plate and a lower cover plate respectively, and the left end and the right end of the front coaming and the rear coaming are fixedly connected with a balance arm hanging ear plate or a side wall plate respectively;
the gusset is arranged at the hollow position between the front wall plate, the rear wall plate, the left ear plate assembly, the right ear plate assembly and the ring plate, and the opposite end of one end of the gusset fixedly connected with the ring plate is fixedly connected with the balance arm hanging ear plate or the side wall plate, so that the rigidity of the upper support structure can be effectively improved, and the stability of the whole structure of the upper support is kept.
Furthermore, in the ear plate assembly, a gap is arranged between the balance arm hanging ear plate and the side wall plate, the side part of the ring plate penetrates through the gap, and the opposite end parts of the balance arm hanging ear plate and the side wall plate are respectively and fixedly connected with the ring plate.
Furthermore, the side part of the upper cover plate facing the ear plate assembly is provided with a clamping tongue, the clamping tongue penetrates through the gap, and the lower surface of the clamping tongue is fixedly connected with a ring plate.
Above otic placode subassembly carries out the rigid coupling through setting up between interval and upper cover plate and the circle board, can further promote the overall structure intensity of gyration upper bracket.
Furthermore, reinforcing plate assemblies are symmetrically arranged at the left side and the right side of the body, and each reinforcing plate assembly comprises a lower reinforcing plate, an inner reinforcing plate and an outer reinforcing plate;
the upper surface of the lower reinforcing plate is fixedly connected with the balance arm hanging lug plate, and one end of the lower reinforcing plate is fixedly connected with the lower cover plate; the inner reinforcing plate is fixedly connected with the balance arm hanging lug plate and the front wall plate respectively; the outer reinforcing plate is fixedly connected with the balance arm hanging lug plate and the clamping tongue respectively. The stress effect of the whole structure is improved, the stress concentration phenomenon is reduced, and the reliability of the support structure is improved.
Furthermore, the upper end and the lower end of one end, away from the upper ear plate, of each balance arm hanging ear plate are respectively provided with a balance arm hinge hole, and the two sides of the balance arm hanging ear plate around each balance arm hinge hole are respectively and fixedly provided with a first annular pasting plate.
Furthermore, on the upper ear plate, a boom mounting hinge point is a hinge hole with an opening at the side part, and arc-shaped attaching plates are fixedly arranged on two sides of the upper ear plate at the peripheral part of the boom mounting hinge point respectively; the A-shaped frame mounting twisting point is a through hole, and second annular pasting plates are fixedly arranged on two sides of the upper ear plate on the periphery of the A-shaped frame mounting twisting point respectively. The flitch can effectively reduce the thickness of main part plate, is favorable to the lightweight structure.
Furthermore, one or more lightening holes are arranged on any one or more structures of the ear plate assembly, the front wall plate, the rear wall plate, the side wall plates, the rib plate and the reinforcing plate assembly.
A swing arm type tower crane comprises a balance arm, a crane boom, a rotary lower support, a tower body and an A-shaped frame and further comprises an upper rotary support body, wherein the body is connected with the crane boom, the A-shaped frame and the balance arm through a crane boom mounting hinge point, an A-shaped frame mounting hinge point and a balance arm hinge hole respectively.
Compared with the prior art, the invention has the following beneficial effects:
(1) the boom mounting hinge point and the bracket A mounting hinge point are respectively arranged at two sides of the rotation center, and the two mounting hinge points are arranged on the same lug plate, so that the front side and the rear side of the rotation support are symmetrically stressed, the horizontal force is offset, the rotation stress is reduced, and the bearing capacity of the rotation support is stronger; the slewing radius is reduced, and the cost of the slewing bearing is reduced;
(2) the load transferred by the crane boom is not on the balance arm, the load of the balance arm is reduced, and the bearing capacity of the balance arm is improved; the structure stress is more reasonable, thereby improving the safety and stability of the whole machine load;
(3) the boom of the swing arm tower crane provided by the invention is provided with the front-mounted hinge point, and the amplitude of the boom is larger, so that the length of the boom is shortened, the forward tilting moment of the whole machine is reduced, and the stability is good; when the design is the same as the maximum amplitude, the crane boom is shorter and lighter, and the cost of the crane boom is reduced;
(4) the crane boom mounting hinge point is an arc-shaped hinge hole with an opening at the side part, the crane boom is easier to mount, the mounting efficiency of the tower crane is improved, and the later maintenance cost is saved.
Drawings
FIG. 1 is a schematic view of an overall structure of an embodiment of a tower crane with a movable arm according to the present invention;
FIG. 2 is a schematic view of an upper mounting structure of the swing arm tower crane in the embodiment of FIG. 1 of the invention;
FIG. 3 is a schematic structural view of an embodiment of a pivoting upper support according to the present invention;
FIG. 4 is a schematic view of the internal structure of one embodiment of the pivoting upper support of the present invention;
FIG. 5 is a left side view of the swivel upper mount of the embodiment of FIG. 3;
FIG. 6 is a front view of the lower stiffener;
FIG. 7 is a front view of the inner gusset;
FIG. 8 is a schematic view of a balance arm ear plate;
FIG. 9 is a schematic view of an upper ear plate;
in the figure: 1. A body; 2. an ear plate assembly; 3. an upper ear plate; 4. the balance arm is hung on the lug plate; 5. a hoisting arm is provided with a hinge point; 6. a hinge point is arranged on the A-shaped frame; 7. an upper cover plate; 8. a ring plate; 9. a lower cover plate; 10. a rib plate; 11. a dash panel; 12. a back panel; 13. side coaming plates; 14. a latch; 15. a reinforcing plate assembly; 16. a lower reinforcing plate; 17. an inner reinforcing plate; 18. an outer reinforcing plate; 19. a balance arm hinge hole; 20. a first annular patch panel; 21. an arc flitch; 22. a second annular flitch plate; 23. a balance arm; 24. a cargo boom; 25. a lower rotary support; 26. a tower body; 27. a-shaped frame.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 2 and 3, a rotary upper support comprises a body 1, wherein ear plate assemblies 2 are symmetrically arranged at the left side and the right side of the body 1, each ear plate assembly 2 comprises an upper ear plate 3 arranged at the upper part of the ear plate assembly 2, and a balance arm hanging ear plate 4 arranged at one end part of the ear plate assembly 2;
two ends of the upper ear plate 3 are respectively provided with a crane boom mounting hinge point 5 and an A-shaped frame mounting hinge point 6, the crane boom mounting hinge point 5 and the A-shaped frame mounting hinge point 6 are oppositely arranged on the upper ear plates at two sides, and the crane boom mounting hinge point 5 is positioned at one end of the upper ear plate 3 far away from the balance arm hanging ear plate 4;
at the moment, the boom mounting hinge point is arranged in front, and the amplitude of the boom is larger; when the maximum amplitude of the boom is designed, the length of the boom is shortened, the forward tilting moment of the whole machine is reduced, and the performance of the whole machine is improved.
Meanwhile, the boom mounting hinge point and the A-shaped frame mounting hinge point are both arranged on the rotary upper support, the balance arm is loaded and lowered, and the bearing capacity of the balance arm can be improved.
The central axis of rotation of the body 1 is located between the upper ear plates 3 on both sides, and is located between the connecting line of the boom mounting hinge points 5 on both sides and the connecting line of the A-shaped frame mounting hinge points 6 on both sides.
The front side and the rear side of the rotary upper support are symmetrically stressed, the horizontal force is offset, the rotary stress is reduced, and the bearing capacity of the rotary support is stronger; the gyration radius is reduced, and the cost of the gyration support is reduced.
The body 1 further comprises an upper cover plate 7, a ring plate 8, a lower cover plate 9 and rib plates 10, the upper cover plate 7 and the lower cover plate 9 are arranged in a vertical parallel mode, the ring plate 8 and the rib plates 10 are vertically arranged between the upper cover plate 7 and the lower cover plate 9, and the rib plates 10 are fixedly connected with the periphery of the ring plate 8, the upper cover plate 7 and the lower cover plate 9, so that the upper cover plate 7, the ring plate 8, the lower cover plate 9 and the rib plates 10 form a box structure, and an upper support forms a stable structure. The ear plate component 2 is oppositely arranged at one opposite side of the box body structure.
Example 2
On the basis of embodiment 1, the revolving upper support seat described in this embodiment is further designed as follows:
as shown in fig. 3 and 4, the body 1 further comprises a front coaming 11 and a rear coaming 12, in the ear plate assembly 2, one end of the upper ear plate 3 is connected with the balance arm hanging ear plate 4, and the other end is connected with the side coaming 13;
the front coaming 11 and the back coaming 12 are oppositely arranged at the other opposite side of the box body structure, the upper end and the lower end of the front coaming 11 and the back coaming 12 are fixedly connected with the upper cover plate 7 and the lower cover plate 9 respectively, and the left end and the right end are fixedly connected with the balance arm hanging ear plate 4 or the side wall plate 13 respectively;
the rib plate 10 is arranged in the hollow position between the front coaming 11, the back coaming 12 and the left and right ear plate components 2 and the ring plate 8, and the opposite end of one end of the rib plate 10 fixedly connected with the ring plate 8 is fixedly connected with the balance arm hanging ear plate 4 or the side wall plate 13, so that the rigidity of the upper support structure can be effectively improved, and the stability of the whole structure of the upper support can be kept.
In the ear plate assembly 2, a gap is arranged between the balance arm hanging ear plate 4 and the side wall plate 13, the side part of the ring plate 8 penetrates through the gap, and the opposite end parts of the balance arm hanging ear plate 4 and the side wall plate 13 are respectively fixedly connected with the ring plate 8.
Example 3
On the basis of the above embodiments, the revolving upper support seat described in the present embodiment is further designed as follows:
as shown in FIG. 3, the side of the upper cover plate 7 facing the ear plate assembly 2 is provided with a latch 14, the latch 14 passes through the space, and the lower surface of the latch is fixedly connected with the ring plate 8.
Example 4
On the basis of the above embodiments, the revolving upper support seat described in the present embodiment is further designed as follows:
as shown in fig. 5, 6 and 7, the left and right sides of the body 1 are further symmetrically provided with reinforcing plate assemblies 15, and each reinforcing plate assembly 15 comprises a lower reinforcing plate 16, an inner reinforcing plate 17 and an outer reinforcing plate 18;
the upper surface of the lower reinforcing plate 16 is fixedly connected with the balance arm suspension lug plate 4, and one end of the lower reinforcing plate is fixedly connected with the lower cover plate 9; the inner reinforcing plate 17 is fixedly connected with the balance arm hanging lug plate 4 and the front wall plate 11 respectively and is positioned on the inner side of the balance arm hanging lug plate 4 and the outer side of the box body structure; the outer reinforcing plate 18 is fixedly connected with the balance arm hanging lug plate 4 and the clamping tongue 14 respectively and is positioned on the outer side of the balance arm hanging lug plate 4. The design of the reinforcing plate component 15 is beneficial to improving the stress effect of the whole structure, reducing the stress concentration phenomenon and improving the reliability of the support structure.
Example 5
On the basis of the above embodiments, the revolving upper support seat described in the present embodiment is further designed as follows:
as shown in fig. 8, the upper and lower ends of one end of each balance arm engaging lug plate 4 away from the upper lug plate 3 are respectively provided with a balance arm hinge hole 19, and two sides of the balance arm engaging lug plate 4 around each balance arm hinge hole 19 are respectively and fixedly provided with a first annular patch plate 20.
Example 6
On the basis of the above embodiments, the revolving upper support seat described in the present embodiment is further designed as follows:
as shown in fig. 9, on the upper ear plate 3, the boom mounting hinge point 5 is a hinge hole with an opening at the side, and arc-shaped attaching plates 21 are respectively fixedly arranged at two sides of the upper ear plate at the periphery of the boom mounting hinge point; the A-shaped frame mounting hinge point 6 is a through hole, and second annular pasting plates 22 are fixedly arranged on two sides of the upper ear plate on the periphery of the A-shaped frame mounting hinge point respectively. The flitch can effectively reduce the thickness of main part plate, is favorable to the lightweight structure.
The crane boom mounting hinge point is an arc-shaped hinge hole with an opening at the side part, so that the crane boom is easier to mount, the mounting efficiency of the tower crane can be improved, and the later maintenance cost is saved.
Example 7
On the basis of the above embodiments, the revolving upper support seat described in the present embodiment is further designed as follows:
one or more lightening holes are arranged on any one or more structures of the ear plate assembly 2, the front wall plate 11, the rear wall plate 12, the side wall plates 13, the rib plate 10 and the reinforcing plate assembly 15.
Example 8
As shown in fig. 1, a jib tower crane comprises a balance arm 23, a jib 24, a rotary lower support 25, a tower body 26 and an a-frame 27, and is characterized by further comprising a rotary upper support body 1 of any one of claims 1 to 9, wherein the body 1 is connected with the jib 24, the a-frame 27 and the balance arm 23 through a jib mounting hinge point 5, an a-frame mounting hinge point 6 and a balance arm hinge hole 19.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A rotary upper support is characterized by comprising a body (1), wherein ear plate assemblies (2) are symmetrically arranged at the left side and the right side of the body (1), each ear plate assembly (2) comprises an upper ear plate (3) arranged at the upper part of the ear plate assembly (2) and a balance arm hanging and connecting ear plate (4) arranged at one end part of the ear plate assembly (2);
two ends of the upper ear plate (3) are respectively provided with a crane boom mounting hinge point (5) and an A-shaped frame mounting hinge point (6), the crane boom mounting hinge point (5) and the A-shaped frame mounting hinge point (6) are oppositely arranged on the upper ear plates at two sides, and the crane boom mounting hinge point (5) is positioned at one end of the upper ear plate (3) far away from the balance arm hanging ear plate (4);
the rotation central axis of the body (1) is positioned between the upper ear plates (3) at two sides, and is positioned between the connecting line of the boom mounting hinge points (5) at two sides and the connecting line of the A-shaped frame mounting hinge points (6) at two sides.
2. The upper rotating support according to claim 1, wherein the body (1) further comprises an upper cover plate (7), a ring plate (8), a lower cover plate (9) and rib plates (10), the upper cover plate (7) and the lower cover plate (9) are arranged in parallel up and down, the ring plate (8) and the rib plates (10) are vertically arranged between the upper cover plate (7) and the lower cover plate (9), and the plurality of rib plates (10) are fixedly connected with the periphery of the ring plate (8) and the upper cover plate (7) and the lower cover plate (9), so that the upper cover plate (7), the ring plate (8), the lower cover plate (9) and the rib plates (10) form a box structure; the ear plate component (2) is oppositely arranged on one opposite side of the box body structure.
3. A swivel upper mount according to claim 2, characterized in that the body (1) further comprises a front coaming (11) and a rear coaming (12), and in the ear plate assembly (2), one end of the upper ear plate (3) is connected with the balance arm hanging ear plate (4), and the other end is connected with the side coaming (13);
the front coaming (11) and the rear coaming (12) are oppositely arranged on the other opposite side of the box body structure, the upper end and the lower end of the front coaming (11) and the upper end and the lower end of the rear coaming (12) are fixedly connected with an upper cover plate (7) and a lower cover plate (9) respectively, and the left end and the right end are fixedly connected with a balance arm hanging lug plate (4) or a side wall plate (13) respectively;
the rib plates (10) are arranged in hollow positions among the front coaming (11), the back coaming (12), the left ear plate assembly, the right ear plate assembly (2) and the ring plate (8), and opposite ends of one ends of the rib plates (10) fixedly connected with the ring plate (8) are fixedly connected with the balance arm hanging ear plates (4) or the side wall plates (13).
4. A swivel upper mount according to claim 2, characterized in that the ear plate assembly has a space between the balance arm hook ear plate (4) and the side wall plate (13), the side of the ring plate (8) passes through the space, and the opposite ends of the balance arm hook ear plate (4) and the side wall plate (13) are respectively fixed on the ring plate (8).
5. A swivel upper mount according to claim 4, characterized in that the upper cover plate (7) is provided with a latch (14) on the side facing the ear plate assembly (2), the latch (14) passing through the space and having its lower surface fixed to the ring plate (8).
6. The upper rotary support according to claim 2, characterized in that the left and right sides of the main body (1) are symmetrically provided with reinforcing plate assemblies (15), and each reinforcing plate assembly (15) comprises a lower reinforcing plate (16), an inner reinforcing plate (17) and an outer reinforcing plate (18);
the upper surface of the lower reinforcing plate (16) is fixedly connected with the balance arm hanging lug plate (4), and one end of the lower reinforcing plate is fixedly connected with the lower cover plate (9); the inner reinforcing plate (17) is fixedly connected with the balance arm hanging ear plate (4) and the front wall plate (11) respectively; the outer reinforcing plate (18) is fixedly connected with the balance arm hanging lug plate (4) and the clamping tongue (14) respectively.
7. The upper rotating bracket according to claim 1, characterized in that the upper and lower ends of the end of each balance arm hanging lug plate (4) far away from the upper lug plate (3) are respectively provided with a balance arm hinge hole (19), and the two sides of the balance arm hanging lug plate (4) around each balance arm hinge hole (19) are respectively fixedly provided with a first annular patch (20).
8. The upper rotating bracket according to claim 1, characterized in that the boom mounting hinge point (5) on the upper ear plate (3) is a hinge hole with an opening at the side, and arc-shaped attaching plates (21) are respectively fixed on both sides of the upper ear plate at the periphery of the upper ear plate; the A-shaped frame mounting hinge point (6) is a through hole, and second annular pasting plates (22) are fixedly arranged on two sides of the upper ear plate on the periphery of the A-shaped frame mounting hinge point respectively.
9. A swivel upper mount according to any one of claims 1 to 8, wherein one or more lightening holes are provided in any one or more of the structure of the ear panel assembly (2), the front dash panel (11), the back dash panel (12), the side dash panel (13), the rib panel (10) and the reinforcement panel assembly (15).
10. A swing arm tower crane comprising a balance arm (23), a cargo boom (24), a lower slewing bearing (25), a tower body (26) and an a-frame (27), characterized in that it further comprises a main slewing upper bearing body (1) according to any one of claims 1 to 9, said body (1) being connected to the cargo boom (24), the a-frame (27) and the balance arm (23) through a cargo boom mounting hinge point (5), an a-frame mounting hinge point (6) and a balance arm hinge hole (19), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110596987.8A CN113247787B (en) | 2021-05-31 | 2021-05-31 | Rotary upper support and swing arm type tower crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110596987.8A CN113247787B (en) | 2021-05-31 | 2021-05-31 | Rotary upper support and swing arm type tower crane |
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| CN113247787A true CN113247787A (en) | 2021-08-13 |
| CN113247787B CN113247787B (en) | 2022-10-14 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN103193165A (en) * | 2013-04-12 | 2013-07-10 | 中联重科股份有限公司 | Upper bracket of tower crane and tower crane |
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| CN204802891U (en) * | 2015-07-17 | 2015-11-25 | 浙江省建设机械集团有限公司 | Jib crane undersetting |
| CN205555919U (en) * | 2016-02-29 | 2016-09-07 | 浙江省建设机械集团有限公司 | Jib crane upper bracket |
| CN210683020U (en) * | 2019-07-29 | 2020-06-05 | 昆明俊马建筑机械有限公司 | Tower crane jib loading boom quick-assembling connects |
| CN211338608U (en) * | 2019-12-23 | 2020-08-25 | 辽宁天一重工有限公司 | Novel roof hangs balance arm and upper bracket connection structure |
| CN112008277A (en) * | 2020-08-07 | 2020-12-01 | 湖南九方焊接技术有限公司 | Welding method for tower crane turntable support |
| CN212712487U (en) * | 2020-05-09 | 2021-03-16 | 科曼萨建设机械（杭州）有限公司 | Direct connection structure of balance arm, arm support and upper support |
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| CN102491207A (en) * | 2011-12-20 | 2012-06-13 | 中联重科股份有限公司 | Movable-arm tower crane |
| CN103193165A (en) * | 2013-04-12 | 2013-07-10 | 中联重科股份有限公司 | Upper bracket of tower crane and tower crane |
| CN103663189A (en) * | 2014-01-02 | 2014-03-26 | 中联重科股份有限公司 | Moving arm tower crane installation method |
| CN204802891U (en) * | 2015-07-17 | 2015-11-25 | 浙江省建设机械集团有限公司 | Jib crane undersetting |
| CN205555919U (en) * | 2016-02-29 | 2016-09-07 | 浙江省建设机械集团有限公司 | Jib crane upper bracket |
| CN210683020U (en) * | 2019-07-29 | 2020-06-05 | 昆明俊马建筑机械有限公司 | Tower crane jib loading boom quick-assembling connects |
| CN211338608U (en) * | 2019-12-23 | 2020-08-25 | 辽宁天一重工有限公司 | Novel roof hangs balance arm and upper bracket connection structure |
| CN212712487U (en) * | 2020-05-09 | 2021-03-16 | 科曼萨建设机械（杭州）有限公司 | Direct connection structure of balance arm, arm support and upper support |
| CN112008277A (en) * | 2020-08-07 | 2020-12-01 | 湖南九方焊接技术有限公司 | Welding method for tower crane turntable support |
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| CN113247787B (en) | 2022-10-14 |
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