CN111606226A - Direct connection structure of balance arm, arm support and upper support and mounting method of direct connection structure - Google Patents
Direct connection structure of balance arm, arm support and upper support and mounting method of direct connection structure Download PDFInfo
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- CN111606226A CN111606226A CN202010386210.4A CN202010386210A CN111606226A CN 111606226 A CN111606226 A CN 111606226A CN 202010386210 A CN202010386210 A CN 202010386210A CN 111606226 A CN111606226 A CN 111606226A
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- plate
- arm
- hole
- support
- balance arm
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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
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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
Abstract
A direct connection structure of a balance arm, an arm support and an upper support comprises the upper support which is horizontally arranged, wherein the balance arm and the arm support are respectively arranged on two sides of the upper support along the horizontal direction, and a double-lug plate of an upper chord of the balance arm is connected with a single-lug plate of the upper chord of the arm support through a pin shaft; the lower chord of the balance arm is connected with the upper support, and the lower chord of the arm support is connected with the upper support; the balance arm and the arm support extend reversely along the same straight line; the mounting frame is obliquely connected between the balance arm and one end, close to the arm support, of the upper support. The invention also provides an installation method of the direct connection structure of the balance arm, the arm support and the upper support, when in installation, the direct connection among the balance arm, the arm support and the upper support can be completed only by connecting the installation frame arranged on the balance arm with the upper support, the installation method is simple in structure and convenient to install, and the height of the rotary tower body is reduced, so that the height of the installation tower crane is effectively reduced, and the stress of the rotary upper structure is more reasonable.
Description
Technical Field
The invention relates to the technical field of tower cranes, in particular to a direct connection structure of a balance arm, an arm support and an upper support and an installation method thereof.
Background
At present, most of connections between a balance arm and an arm support (a boom of a tower crane is called as an arm support or a suspension arm for short) of the tower crane are completed through a rotary tower body as shown in figure 1 or through a connection device as shown in figure 2, namely the balance arm is provided with a single-lug plate, the arm support is provided with a single-lug plate, the rotary tower body is provided with a double-lug plate, the balance arm is connected with the rotary tower body through a pin shaft, the other side of the arm support is also connected with the other side of the rotary tower body through a pin shaft, or the balance arm is provided with a double-lug plate, the arm support is provided with a double-lug plate, the rotary tower body is provided with a single-lug plate, the rotary tower body is respectively connected with the balance arm and the arm support through a pin shaft, the lower part of the rotary tower body is connected with an upper support of the tower crane through a pin shaft, no matter how the parts are arranged, the overall stress effect is not ideal due to the influence of shearing, twisting, bending and other forces.
The connecting device is actually a conversion joint, only the height of the rotary tower body is reduced, a single or double connecting plates are arranged through the balance arm and the arm support structure, the left side and the right side of the connecting device are respectively connected with the balance arm and the arm support, the lower part of the connecting device is directly connected with the upper support, the reasons of complex manufacture, complex installation and the like exist, and meanwhile, the workload is invisibly increased.
Disclosure of Invention
In order to overcome the above problems, the present invention provides, in a first aspect, a direct connection structure of a balance arm, an arm support and an upper support, and provides, in a second aspect, an installation method of a direct connection structure of a balance arm, an arm support and an upper support.
The technical scheme adopted by the invention is as follows: a direct connection structure of a balance arm, an arm support and an upper support comprises the upper support which is horizontally arranged, the left side and the right side of the upper support in the horizontal direction are respectively provided with the balance arm and the arm support, and the balance arm and the arm support reversely extend along the same straight line; the balance arm comprises a balance arm upper chord and two balance arm lower chords, the arm support comprises an arm support upper chord and two arm support lower chords, and the cross sections of the balance arm and the arm support are triangular;
the double-lug plate is arranged at one end, close to the upper support, of the upper chord of the balance arm, the single-lug plate is arranged at one end, close to the upper support, of the upper chord of the arm support, connecting holes are concentrically formed in the single-lug plate and the double-lug plate, and the double-lug plate of the upper chord of the balance arm is connected with the single-lug plate of the upper chord of the arm support through a pin shaft;
a first connecting group is arranged at one end of the lower chord of the balance arm, which is close to the upper support, a pair of first fixing plates are arranged at the positions of the upper support, which correspond to the first connecting group, and the pair of first fixing plates are symmetrically arranged at the front side and the rear side of the first connecting group; the first connecting group comprises first round steel and a first round steel mounting seat, a first mounting hole is formed in the first round steel mounting seat, the first round steel penetrates through the first mounting hole, and the extending lengths of the two ends of the first round steel are the same; one end of the first fixing plate is fixedly connected with the upper support, and the other end of the first fixing plate is provided with a bolt hole, a hinge hole, a fixing hole and an opening curved groove; a bolt hole for preventing the buckle plate frame from being closed is arranged above the opening bent groove, a hinge hole for being hinged with the first hole in the buckle plate frame is arranged obliquely above the opening bent groove, and a fixing hole for fixing the buckle plate frame is arranged below the opening bent groove; the extending end of the first round steel is arranged in the opening curved groove, and the outer side of the first fixing plate is hinged with a buckle plate frame;
the buckle plate frame comprises a buckle plate, the buckle plate is of a U-shaped plate structure, a first hole is formed in the position, corresponding to the hinge hole, of the buckle plate, a round pasting plate is arranged outside one side, close to the first fixing plate, of the first hole, a second hole is formed in the position, corresponding to the fixing hole, of the buckle plate, and the buckle plate is further provided with an insertion pipe for inserting a bolt and a handle for closing or opening the buckle plate frame conveniently; when the buckle plate frame is buckled, the groove of the buckle plate and the opening bent groove form an accommodating space for accommodating the first round steel, and the second hole is connected with the fixed hole through a pin shaft; the bolt is fixedly connected with the handle through the chain, when the buckle plate frame is buckled, the bolt is inserted into the bolt pipe, and when the buckle plate frame is opened, the bolt is inserted into the bolt hole to prevent the buckle plate frame from being closed;
a second connecting group is arranged at one end of the lower chord of the arm support close to the upper support, a pair of second fixing plates are arranged at the position of the upper support corresponding to the second connecting group, and the pair of second fixing plates are symmetrically arranged at the front side and the rear side of the second connecting group; the second connecting group comprises second round steel and a second round steel mounting seat, a second mounting hole is formed in the second round steel mounting seat, the second round steel penetrates through the second mounting hole, and the extending lengths of the two ends of the second round steel are the same; the structure of the second fixing plate and the structure of the first fixing plate are mirror images; the connection mode of the second connection group and the second fixing plate is consistent with that of the first connection group and the first fixing plate;
the double-lug plate type balance arm assembly machine further comprises an installation frame used for assisting installation of the balance arm, one side, close to the upper support, of the lower end of the double-lug plate is provided with a pair of connecting plates, the pair of connecting plates are symmetrically arranged on the front side and the rear side of the top of the installation frame, and long-groove-shaped holes used for being fixedly connected with the installation frame and pin shaft holes used for playing a role of a gear rack are sequentially arranged; the mounting frame comprises a rectangular frame forming a certain included angle with the horizontal plane, and the rectangular frame consists of two vertical pipes which are obliquely arranged and two horizontal pipes which are horizontally arranged; an upper connector used for being fixedly connected with the connecting plate is arranged above the rectangular frame, the upper connector and the rectangular frame are in the same plane, and the upper connector is fixedly connected with the rectangular frame through two supporting pipes; the upper connector is in a rod shape, two ends of the upper connector are provided with first through holes, and the first through holes are connected with long groove-shaped holes in the connecting plate through pin shafts;
the top end of the vertical pipe is provided with a long base plate, and the middle section of the vertical pipe is provided with a handrail convenient to install; the bottom end of the vertical pipe is provided with a short base plate, and the bottom end of the short base plate is provided with a lower connector fixedly connected with the upper support; one end of the upper support close to the arm support is provided with a base which is fixedly connected with the lower connector; the lower connecting head is provided with a second through hole, the base is provided with a round hole, and the second through hole is connected with the round hole on the base through a pin shaft.
A method for installing a direct connection structure of a balance arm, an arm support and an upper support comprises the following steps:
step 1, mounting an installation frame on elongated slot holes in connecting plates of upper chords of two balance arms by using pin shafts, and then inserting the pin shafts into pin shaft holes in the connecting plates to support the installation frame on the outer sides of the pin shafts so as to keep the installation frame at the positions of the pin shafts;
step 3, hoisting the balance arm by using auxiliary equipment, enabling the first connecting group on the balance arm to lean against the first fixing plate on the upper support, pulling out the bolt, fixing the bolt into the inserting pipe on the buckle plate frame, closing the buckle plate frame, and fixing the buckle plate frame by using the screw shaft;
step 4, rotating the balance arm through the first round steel on the first connecting group to enable the mounting frame to be close to the base on the upper support and fixed, and enabling the balance arm to be fixed on the upper support;
step 5, hoisting the arm support by using auxiliary equipment, so that a second connecting group on the arm support is connected with a single lug plate of the arm support and a double lug plate of a balance arm by using a pin shaft within the range of a second fixing plate of the upper support;
and 6, slowly descending, when the second connecting group on the arm support is close to the second fixing plate of the upper support, pulling out the bolt, fixing the bolt in the inserting pipe on the buckle plate frame, closing the buckle plate frame, and fixing the buckle plate frame by using the screw shaft.
Further, in the step 1, the mounting frame can be mounted in the connecting plate of the upper chord of the balance arm in advance, and then the pin shaft is inserted into the pin shaft hole on the connecting plate, so that the mounting frame is supported on the inner side of the pin shaft and is kept at the position of the pin shaft; before the balance arm is installed, only the pin shaft on the pin shaft hole is needed to be detached, the installation frame is pulled outwards, and the pin shaft is detached into the pin shaft hole after the pin shaft hole is exceeded, so that the installation frame is supported on the outer side of the pin shaft and is kept at the position of the pin shaft.
Further, in the step 6, the balance arm is pulled by the self weight of the arm frame to rotate through the first round steel of the lower chord of the balance arm, and the mounting frame moves along the direction of the long slot hole of the connecting plate.
The invention has the beneficial effects that: the balance arm and the upper boom chord member are directly connected, the lower boom position of the balance arm and the lower boom position of the boom are connected with the upper support, transition of a rotary tower body or a connecting device is omitted, and when the balance arm is installed, direct connection between the balance arm, the boom and the upper support can be completed only by connecting the mounting frame and the upper support which are installed on the balance arm.
Drawings
Fig. 1 is a schematic structural diagram of a prior art that a balance arm and a boom are installed through a revolving tower body.
Fig. 2 is a schematic structural diagram of a prior art balance arm and an arm support installed through a connecting device.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a front view of the balance arm.
Fig. 5 is a side view of the balance arm.
Fig. 6 is a schematic structural diagram of the first connecting group on the lower chord of the balance arm.
Fig. 7 is a front view of the boom.
Fig. 8 is a side view of the boom.
Fig. 9 is a schematic structural diagram of the second connection group on the boom lower chord.
Fig. 10 is a schematic structural view of the upper support.
Fig. 11 is a schematic structural view of the mounting bracket.
Fig. 12 is a schematic structural view of the buckle holder.
Figure 13 is a schematic view of the mounting bracket mounted on the balance arm.
Figure 14 is a schematic view of the mounting on the jib prior to hoisting.
Fig. 15 is a schematic view of the buckle frame being opened on the upper support.
Fig. 16 is a schematic view of the balance arm mounted on the upper mount.
Description of reference numerals: 1. a balance arm; 11. a balance arm upper chord; 12. a double ear plate; 13. a connecting plate; 14. a balance arm lower chord; 15. a first connection group; 16. a first round steel; 17. a long slot-shaped hole; 18. a pin shaft hole; 2. a boom; 21. an upper boom chord; 22. a boom lower chord; 23. a single ear plate; 24. a second connection group; 25. a second round steel; 3. an upper support; 31. a base; 321. a first fixing plate; 322. a second fixing plate; 33. a pin hole; 34. a hinge hole; 35. a fixing hole; 4. a mounting frame; 41. an upper connector; 42. a support tube; 43. a long base plate; 44. a transverse tube; 45. a vertical tube; 46. a short base plate; 47. a lower connector; 48. a handrail; 5. a buckle frame; 51. buckling the plate; 52. a circular pasting plate; 53. inserting a tube; 54. a handle; 55. a first hole; 56. a second hole; 6. and (4) a bolt.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. 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 invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the attached drawings, the direct connection structure of the balance arm, the arm support and the upper support comprises an upper support 3 which is horizontally arranged, the left side and the right side of the upper support 3 in the horizontal direction are respectively provided with the balance arm 1 and the arm support 2, and the balance arm 1 and the arm support 2 reversely extend along the same straight line; the balance arm 1 comprises a balance arm upper chord 11 and two balance arm lower chords 14, the arm support 2 comprises an arm support upper chord 21 and two arm support lower chords 22, and the cross sections of the balance arm 1 and the arm support 2 are triangular;
a double-lug plate 12 is arranged at one end of the upper boom 11 close to the upper support 3, a single-lug plate 23 is arranged at one end of the upper boom 21 close to the upper support 3, connecting holes are concentrically arranged on the single-lug plate 23 and the double-lug plate 12, and the double-lug plate 12 of the upper boom 11 is connected with the single-lug plate 23 of the upper boom 21 through a pin shaft;
a first connecting group 15 is arranged at one end of the balance arm lower chord 14 close to the upper support 3, a pair of first fixing plates 321 is arranged at the position of the upper support 3 corresponding to the first connecting group 15, and the pair of first fixing plates 321 are symmetrically arranged at the front side and the rear side of the first connecting group 15; the first connecting group 15 comprises first round steel 16 and a first round steel mounting seat, a first mounting hole is formed in the first round steel mounting seat, the first round steel 16 penetrates through the first mounting hole, and the two ends of the first round steel 16 extend out to the same length; one end of the first fixing plate 321 is fixedly connected with the upper support 3, and the other end is provided with a bolt hole 33, a hinge hole 34, a fixing hole 35 and an opening curved groove; a bolt hole 33 for preventing the buckle plate frame 5 from being closed is arranged above the opening bent groove, a hinge hole 34 for being hinged with the first hole 55 on the buckle plate frame 5 is arranged obliquely above the opening bent groove, and a fixing hole 35 for fixing the buckle plate frame 5 is arranged below the opening bent groove; the extending end of the first round steel 16 is arranged in the opening curved groove, and the outer side of the first fixing plate 321 is hinged with the buckle plate frame 5;
the buckle plate frame 5 comprises a buckle plate 51, the buckle plate 51 is of a U-shaped plate structure, a first hole 55 is formed in the position, corresponding to the hinge hole 34, of the buckle plate 51, a circular pasting plate 52 is arranged outside one side, close to the first fixing plate 321, of the first hole 55, a second hole 56 is formed in the position, corresponding to the fixing hole 35, of the buckle plate 51, and an insertion pipe 53 used for inserting the bolt 6 and a handle 54 facilitating closing or opening of the buckle plate frame 5 are further arranged on the buckle plate 51; when the buckle plate frame 5 is buckled, the groove of the buckle plate 51 and the opening curved groove form an accommodating space for accommodating the first round steel 16, and the second hole 56 is connected with the fixed hole 35 through a pin shaft; the bolt 6 is fixedly connected with the handle 54 through a chain, when the buckle plate frame 5 is buckled, the bolt 6 is inserted into the insertion pipe 53, and when the buckle plate frame 5 is opened, the bolt 6 is inserted into the bolt hole 33 to prevent the buckle plate frame 5 from being closed;
a second connecting group 24 is arranged at one end of the lower boom 22 close to the upper support 3, a pair of second fixing plates 322 are arranged at positions of the upper support 3 corresponding to the second connecting group 24, and the pair of second fixing plates 322 are symmetrically arranged at the front side and the rear side of the second connecting group 24; the second connecting group 24 comprises second round steel 25 and a second round steel mounting seat, a second mounting hole is formed in the second round steel mounting seat, the second round steel 25 penetrates through the second mounting hole, and the two ends of the second round steel 25 are the same in extension length; the structure of the second fixing plate 322 and the structure of the first fixing plate 321 are mirror images; the connection mode of the second connection group 24 and the second fixing plate 322 is the same as the connection mode of the first connection group 15 and the first fixing plate 321;
the mounting frame 4 is used for assisting the mounting of the balance arm 1, one side, close to the upper support 3, of the lower end of the double-lug plate 12 is provided with a pair of connecting plates 13, the pair of connecting plates 13 are symmetrically arranged on the front side and the rear side of the top of the mounting frame 4, and the connecting plates 13 are sequentially provided with long-slot-shaped holes 17 used for being fixedly connected with the mounting frame 4 and pin shaft holes 18 used for playing a role of a gear rack from top to bottom; the mounting rack 4 comprises a rectangular frame forming a certain included angle with the horizontal plane, and the rectangular frame consists of two vertical pipes 45 which are obliquely arranged and two horizontal pipes 44 which are horizontally arranged; an upper connector 41 fixedly connected with the connecting plate 13 is arranged above the rectangular frame, the upper connector 41 and the rectangular frame are in the same plane, and the upper connector 41 is fixedly connected with the rectangular frame through two supporting pipes 42; the upper connector 41 is in a rod shape, two ends of the upper connector 41 are provided with first through holes, and the first through holes are connected with long groove-shaped holes on the connecting plate 13 through pin shafts;
the top end of the vertical pipe 45 is provided with a long backing plate 43, and the middle section of the vertical pipe 45 is provided with a handrail 48 convenient for installation; a short cushion plate 46 is arranged at the bottom end of the vertical pipe 45, and a lower connector 47 for fixedly connecting with the upper support 3 is arranged at the bottom end of the short cushion plate 46; one end of the upper support 3 close to the arm support 2 is provided with a base 31 which is fixedly connected with a lower connector 47; the lower connector 47 has a second through hole, the base 31 has a circular hole, and the second through hole is connected to the circular hole of the base 31 through a pin.
A method for installing a direct connection structure of a balance arm, an arm support and an upper support comprises the following steps:
step 1, mounting a mounting frame 4 on long groove-shaped holes 17 in connecting plates 13 of upper chords of two balance arms by using pin shafts, and then inserting the pin shafts into pin shaft holes 18 in the connecting plates 13 to support the mounting frame 4 at the outer sides of the pin shafts so as to keep the mounting frame at the positions of the pin shafts; in the step 1, the mounting frame 4 can be arranged in the balance arm upper chord connecting plate 13 in advance, and then a pin shaft is inserted into a pin shaft hole 18 on the connecting plate 13, so that the mounting frame 3 is supported on the inner side of the pin shaft and is kept at the position of the pin shaft; before the balance arm 1 is installed, only the pin shaft on the pin shaft hole 18 needs to be detached, the installation frame 4 is pulled outwards, and after the pin shaft exceeds the pin shaft hole 18, the pin shaft is detached into the pin shaft hole 18, so that the installation frame 4 is supported on the outer side of the pin shaft and is kept at the position of the pin shaft.
step 3, hoisting the balance arm 1 by using auxiliary equipment, enabling the first connecting group 15 on the balance arm 1 to lean against the first fixing plate 321 on the upper support 3, pulling out the bolt 6, fixing the bolt 6 into the insertion tube 53 on the buckle plate frame 5, closing the buckle plate frame 5, and fixing the buckle plate frame 5 by using a screw shaft;
step 4, rotating the balance arm 1 through the round steel 16 on the first connecting group 15 to enable the mounting frame 5 to be close to the base 31 on the upper support 3 and to be fixed, and enabling the balance arm 1 to be fixed on the upper support 3;
step 5, hoisting the arm support 2 by using auxiliary equipment, so that the second connecting group 24 on the arm support 2 is connected with the arm support single lug plate 23 and the balance arm double lug plate 12 by using a pin shaft in the range of the second fixing plate 322 of the upper support 3;
and 6, slowly descending, when the second connecting group 24 on the arm support 2 is close to the second fixing plate 322 of the upper support 3, pulling out the bolt 6, fixing the bolt 6 into the insertion pipe 53 on the buckle plate frame 5, closing the buckle plate frame 5, and fixing the buckle plate frame 5 by using the screw shaft. In the step 6, the self weight of the arm support 2 pulls the balance arm 1 to rotate through the first round steel 16 of the lower chord of the balance arm, and the mounting frame 4 moves along the direction 17 of the long slot hole of the connecting plate.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (4)
1. The utility model provides a structure is directly connected to balance arm, cantilever crane and upper bracket which characterized in that: the device comprises an upper support (3) which is horizontally arranged, wherein a balance arm (1) and an arm support (2) are respectively arranged on the left side and the right side of the upper support (3) along the horizontal direction, and the balance arm (1) and the arm support (2) reversely extend along the same straight line; the balance arm (1) comprises a balance arm upper chord (11) and two balance arm lower chords (14), the arm support (2) comprises an arm support upper chord (21) and two arm support lower chords (22), and the cross sections of the balance arm (1) and the arm support (2) are triangular;
a double-lug plate (12) is arranged at one end, close to the upper support (3), of the balance arm upper chord (11), a single-lug plate (23) is arranged at one end, close to the upper support (3), of the arm support upper chord (21), connecting holes are concentrically formed in the single-lug plate (23) and the double-lug plate (12), and the double-lug plate (12) of the balance arm upper chord (11) is connected with the single-lug plate (23) of the arm support upper chord (21) through a pin shaft;
a first connecting group (15) is arranged at one end, close to the upper support (3), of the balance arm lower chord (14), a pair of first fixing plates (321) are arranged at positions, corresponding to the first connecting group (15), of the upper support (3), and the pair of first fixing plates (321) are symmetrically arranged on the front side and the rear side of the first connecting group (15); the first connecting group (15) comprises first round steel (16) and a first round steel mounting seat, a first mounting hole is formed in the first round steel mounting seat, the first round steel (16) penetrates through the first mounting hole, and the two ends of the first round steel (16) extend out to the same length; one end of the first fixing plate (321) is fixedly connected with the upper support (3), and the other end of the first fixing plate is provided with a bolt hole (33), a hinge hole (34), a fixing hole (35) and an opening curved groove; a bolt hole (33) for preventing the buckle plate frame (5) from being closed is arranged above the opening bent groove, a hinge hole (34) for being hinged with a first hole (55) on the buckle plate frame (5) is arranged obliquely above the opening bent groove, and a fixing hole (35) for fixing the buckle plate frame (5) is arranged below the opening bent groove; the extending end of the first round steel (16) is arranged in the opening curved groove, and the outer side of the first fixing plate (321) is hinged with a buckle plate frame (5);
the buckle plate frame (5) comprises a buckle plate (51), the buckle plate (51) is of a U-shaped plate structure approximately, a first hole (55) is formed in the position, corresponding to the hinge hole (34), of the buckle plate (51), a round pasting plate (52) is arranged outside one side, close to the first fixing plate (321), of the first hole, a second hole (56) is formed in the position, corresponding to the fixing hole (35), of the first hole buckle plate (51), an insertion pipe (53) used for inserting the bolt (6) is further arranged on the buckle plate (51), and a handle (54) used for closing or opening the buckle plate frame (5) is further arranged on the buckle plate (51); when the buckle plate frame (5) is buckled, a groove of the buckle plate (51) and the opening bent groove form an accommodating space for accommodating the first round steel (16), and the second hole (56) is connected with the fixing hole (35) through a pin shaft; the bolt (6) is fixedly connected with the handle (54) through a chain, when the buckle plate frame (5) is buckled, the bolt (6) is inserted into the insertion pipe (53), and when the buckle plate frame (5) is opened, the bolt (6) is inserted into the bolt hole (33) to prevent the buckle plate frame (5) from being closed;
a second connecting group (24) is arranged at one end, close to the upper support (3), of the lower boom chord (22), a pair of second fixing plates (322) is arranged at the position, corresponding to the second connecting group (24), of the upper support (3), and the pair of second fixing plates (322) are symmetrically arranged on the front side and the rear side of the second connecting group (24); the second connecting group (24) comprises second round steel (25) and a second round steel mounting seat, a second mounting hole is formed in the second round steel mounting seat, the second round steel (25) penetrates through the second mounting hole, and the extending lengths of the two ends of the second round steel (25) are the same; the structure of the second fixing plate (322) and the structure of the first fixing plate (321) are mirror images of each other; the connection mode of the second connection group (24) and the second fixing plate (322) is the same as that of the first connection group (15) and the first fixing plate (321);
the auxiliary balance arm is characterized by further comprising a mounting frame (4) used for assisting the mounting of the balance arm (1), a pair of connecting plates (13) are arranged on one side, close to the upper support (3), of the lower end of the double-lug plate (12), the pair of connecting plates (13) are symmetrically arranged on the front side and the rear side of the top of the mounting frame (4), and long-slot-shaped holes (17) used for being fixedly connected with the mounting frame (4) and pin shaft holes (18) used for playing a role of a gear rack are sequentially arranged on the connecting plates (13); the mounting rack (4) comprises a rectangular frame forming a certain included angle with the horizontal plane, and the rectangular frame consists of two vertical pipes (45) which are obliquely arranged and two horizontal pipes (44) which are horizontally arranged; an upper connector (41) fixedly connected with the connecting plate (13) is arranged above the rectangular frame, the upper connector (41) and the rectangular frame are in the same plane, and the upper connector (41) is fixedly connected with the rectangular frame through two supporting pipes (42); the upper connecting head (41) is in a rod shape, two ends of the upper connecting head (41) are provided with first through holes, and the first through holes are connected with long groove-shaped holes in the connecting plate (13) through pin shafts;
a long backing plate (43) is arranged at the top end of the vertical pipe (45), and a handrail (48) convenient to mount is arranged at the middle section of the vertical pipe (45); a short cushion plate (46) is arranged at the bottom end of the vertical pipe (45), and a lower connector (47) fixedly connected with the upper support (3) is arranged at the bottom end of the short cushion plate (46); one end of the upper support (3) close to the arm support (2) is provided with a base (31) which is fixedly connected with the lower connector (47); a second through hole is formed in the lower connecting head (47), a round hole is formed in the base (31), and the second through hole is connected with the round hole in the base (31) through a pin shaft.
2. A method for installing the direct connection structure of the balance arm, the arm support and the upper support in the claim 1, which is characterized in that: the method comprises the following steps:
step 1, mounting a mounting frame (4) on long groove-shaped holes (17) in two balance arm upper chord connecting plates (13) by using a pin shaft, and then inserting the pin shaft into a pin shaft hole (18) in the connecting plates (13) to support the mounting frame (4) at the outer side of the pin shaft so as to keep the mounting frame at the position of the pin shaft;
step 2, respectively installing the buckle plate frames (5) on hinge holes (34) of a first fixing plate (321) and a second fixing plate (322) of the upper support (3) by screw pins, and respectively inserting bolts (6) into bolt holes (33) of the first fixing plate (321) and the second fixing plate (322) to enable the buckle plate frames (5) to be in an open state and arranged in pairs;
step 3, hoisting the balance arm (1) by using auxiliary equipment, enabling a first connecting group (15) on the balance arm (1) to lean against a first fixing plate (321) on the upper support (3), pulling out the bolt (6), fixing the bolt (6) into an insertion tube (53) on the buckle plate frame (5), closing the buckle plate frame (5), and fixing the buckle plate frame (5) by using a screw shaft;
step 4, rotating the balance arm (1) through first round steel (16) on the first connecting group (15), enabling the mounting frame (5) to be close to the base (31) on the upper support (3) and fixed, and enabling the balance arm (1) to be fixed on the upper support (3);
step 5, hoisting the arm support (2) by using auxiliary equipment, and connecting the arm support single lug plate (23) and the balance arm double lug plate (12) together by using a pin shaft within the range of a second fixing plate (322) of the upper support (3) by using a second connecting group (24) on the arm support (2);
and 6, slowly descending, when a second connecting group (24) on the arm support (2) is close to a second fixing plate (322) of the upper support (3), pulling out the bolt (6), fixing the bolt (6) into an insertion tube (53) on the buckle plate frame (5), closing the buckle plate frame (5), and fixing the buckle plate frame (5) by using a screw shaft.
3. The method for installing the direct connection structure of the balance arm, the arm support and the upper support as claimed in claim 2, wherein the method comprises the following steps: in the step 1, the mounting frame (4) can be mounted in the upper chord connecting plate (13) of the balance arm in advance, and then a pin shaft is inserted into a pin shaft hole (18) in the connecting plate (13) so that the mounting frame (3) is supported on the inner side of the pin shaft and is kept at the position of the pin shaft; before the balance arm (1) is installed, only the pin shaft on the pin shaft hole (18) needs to be detached, the installation frame (4) is pulled outwards, and the pin shaft is detached into the pin shaft hole (18) after the pin shaft hole (18) is exceeded, so that the installation frame (4) is supported on the outer side of the pin shaft and is kept at the position of the pin shaft.
4. The method for installing the direct connection structure of the balance arm, the arm support and the upper support as claimed in claim 2, wherein the method comprises the following steps: in the step 6, the self weight of the arm support (2) can pull the balance arm (1) to rotate through the first round steel (16) of the lower chord of the balance arm, and the mounting frame (4) can move along with the direction of the long groove-shaped hole (17) of the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386210.4A CN111606226A (en) | 2020-05-09 | 2020-05-09 | Direct connection structure of balance arm, arm support and upper support and mounting method of direct connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386210.4A CN111606226A (en) | 2020-05-09 | 2020-05-09 | Direct connection structure of balance arm, arm support and upper support and mounting method of direct connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111606226A true CN111606226A (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010386210.4A Pending CN111606226A (en) | 2020-05-09 | 2020-05-09 | Direct connection structure of balance arm, arm support and upper support and mounting method of direct connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111606226A (en) |
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2020
- 2020-05-09 CN CN202010386210.4A patent/CN111606226A/en active Pending
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