Lifting beam for tower crane climbing frame, climbing frame and tower crane

Abstract

The present invention provides a lifting beam for a climbing frame of a tower crane, a climbing frame and a tower crane. The lifting beam for the climbing frame of a tower crane comprises: a beam body and a support bracket; the support bracket is arranged at the end of the beam body, and a hanging groove for accommodating steps on a standard section of a tower body of the tower crane is formed on the support bracket, and a disassembly exit is provided at the lower end of the hanging groove. Through the technical scheme of the present invention, the steps will not interfere with the lifting beam when the climbing frame is climbing upward, and the climbing frame does not need to apply lateral thrust when switching between climbing and jacking operations, so as to achieve the purpose of reducing labor intensity and improving work efficiency, and at the same time, the jacking mechanism on the climbing frame can also be in a vertical state during the jacking operation, so as to ensure clear force, and in addition, since the lifting beam does not need to be laterally separated from the steps, the structural size of the climbing frame can be reduced, so as to achieve the purpose of reducing manufacturing costs.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a lifting crossbeam used for a climbing frame of a tower crane, a climbing frame and a tower crane. Background Art

[0002] The climbing frame is an important component of a tower crane. When the tower crane needs to be raised, the upper components of the tower body can be jacked up by the jacking mechanism set on the climbing frame, and standard sections can be introduced to increase the height of the tower crane.

[0003] like Figure 1 As shown, Figure 1 The schematic diagram of the structure of the climbing operation of the climbing frame in the prior art. The climbing operation of the climbing frame 01 refers to the operation of the climbing frame 01 climbing to the previous standard section 02 after the previous standard section 02 is introduced. However, since the step 03 will interfere with the upward climbing of the hanging plate 04 on the top beam, before the climbing frame 01 performs the climbing operation, it is necessary to first apply a lateral thrust to the top beam and the lifting mechanism 05 on the top beam to make the hanging plate 04 separate from the step 03, and then the climbing operation can be performed. Figure 1 As shown in the climbing operation, during the climbing operation, since the hanging step 04 is separated from the step 03, the lifting mechanism 05 on the lifting beam can be kept vertically set under the influence of gravity. Figure 2 As shown, Figure 2 The schematic diagram of the structure of the jacking operation of the climbing frame in the prior art. The jacking operation of the climbing frame 01 refers to the operation that the jacking mechanism 05 on the climbing frame 01 can jack up the components above the tower body after the climbing frame 01 completes the climbing operation. Of course, in order to switch the climbing frame from the climbing operation to the jacking operation, it is necessary to apply a lateral thrust to the jacking beam and the jacking mechanism 05 on the jacking beam, so that the hanging plate 04 on the jacking beam is hung on the step 03, and the jacking mechanism 05 on the jacking beam is tilted at this time, and then the operation can be performed as follows. Figure 2 Lifting operation shown.

[0004] Therefore, in the prior art, in order to realize the switching between the climbing operation and the jacking operation of the climbing frame, the following problems will occur: first, it is necessary to apply a lateral thrust to the jacking beam and the jacking mechanism on the jacking beam to hang the hanging plate of the jacking beam or detach it from the step, which is time-consuming, labor-intensive and inefficient; second, during the jacking operation, the jacking mechanism is in an inclined state (such as Figure 2 As shown), and as the telescopic angle of the jacking mechanism changes, it will cause unclear force; thirdly, in order to facilitate the lateral separation of the jacking beam from the step, the structural size of the climbing frame will be large and the cost will be high. Summary of the invention

[0005] In view of at least some of the defects or shortcomings of the prior art, the present invention provides a lifting beam for a climbing frame of a tower crane, a climbing frame and a tower crane.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a lifting beam for a tower crane climbing frame, wherein the lifting beam for the tower crane climbing frame comprises: a beam body and a supporting bracket; the supporting bracket is arranged at the end of the beam body, and a hanging groove for accommodating the steps on the standard section of the tower crane tower body is formed on the supporting bracket, and a disassembly and assembly exit is opened at the lower end of the hanging groove.

[0007] In an embodiment of the present invention, the supporting bracket includes two connecting plates arranged at intervals and a hanging beam located between the two connecting plates and respectively connected to the two connecting plates. The two connecting plates and the hanging beam are combined to form a hanging groove with a disassembly and assembly exit at the lower end. The lower end surface of the hanging beam is used to abut against the upper end surface of the step, and the two connecting plates are used to be arranged on opposite sides of the step and respectively abut against the step.

[0008] In an embodiment of the present invention, the hanging beam is arranged near the upper end of the connecting plate, the beam body includes a beam body and a mounting plate arranged at the end of the beam body and extending upward from the beam body, one end of the mounting plate extending from the beam body is inserted into the gap at the lower ends of the two connecting plates, and the lifting beam also includes connecting pins passing through the mounting plate and the two connecting plates.

[0009] In an embodiment of the present invention, the connecting plate includes a first connecting portion arranged in a rectangular shape and a second connecting portion arranged in a triangular shape, one of the side edges of the first connecting portion is connected and overlapped with the first right-angled side of the second connecting portion, the second right-angled side of the second connecting portion is arranged as the lower end of the connecting plate, the two ends of the hanging beam are respectively connected to the first connecting portions of the two connecting plates in a one-to-one correspondence, a connecting hole for a connecting pin to be passed through is provided at a position of the second connecting portion away from the first right-angled side and close to the second right-angled side, and the first connecting portion is used to be arranged close to the standard section of the tower body.

[0010] In an embodiment of the present invention, the lifting beam further comprises a labor-saving operating lever movably hinged on the connecting plate, and the labor-saving operating lever is used to drive the supporting bracket to rotate with the connecting pin as the rotation center so as to separate the supporting bracket from the step.

[0011] In an embodiment of the present invention, the labor-saving operating lever includes an abutment portion located on the side of the connecting plate away from the hanging beam and movably hinged on the connecting plate, and a hand-held portion connected to the abutment portion. The abutment portion is located above the connecting pin, and the hand-held portion is used to move in a direction away from the standard section of the tower body so that the abutment portion abuts against the standard section of the tower body.

[0012] In the embodiment of the present invention, a chamfer is formed at the lower end of the connecting plate for facing the standard section of the tower body.

[0013] In an embodiment of the present invention, a first locking hole is opened on the connecting plate, and a second locking hole is opened on the mounting plate. The first locking hole and the second locking hole are used for docking after the support bracket is separated from the step, and the lifting beam also includes a locking piece passed through the first locking hole and the second locking hole.

[0014] In order to achieve the above object, the present invention further provides a climbing frame, wherein the climbing frame comprises a frame body and the above-mentioned jacking beam for the tower crane climbing frame, and the beam body of the jacking beam is arranged on the frame body.

[0015] In order to achieve the above object, the present invention further provides a tower crane, wherein the tower crane comprises a standard section of a tower body, steps arranged on the standard section of the tower body and the climbing frame described above.

[0016] Through the above technical solution, the lifting beam for the tower crane climbing frame provided by the embodiment of the present invention has the following beneficial effects:

[0017] The lifting crossbeam used for the tower crane climbing frame comprises a crossbeam body and a supporting bracket, wherein the supporting bracket is arranged at the end of the crossbeam body, and a hanging groove for accommodating the steps on the standard section of the tower body of the tower crane is formed on the supporting bracket, and a disassembly and assembly exit is provided at the lower end of the hanging groove, that is, when the steps on the standard section of the tower body of the tower crane are accommodated in the hanging groove, the upper wall surface of the hanging groove can abut against the upper end surface of the steps to support the supporting bracket, so that the supporting bracket can be stably hung on the steps, and since the disassembly and assembly exit is provided at the lower end of the hanging groove, the climbing frame can climb upward During operation, the steps will not interfere with the jacking beam. Therefore, when the climbing frame switches between climbing operation and jacking operation, there is no need to apply lateral thrust to the jacking beam and the jacking mechanism on the jacking beam, so as to reduce labor intensity and improve efficiency. At the same time, the jacking mechanism on the climbing frame can also be in a vertical state during the jacking operation, and the telescopic angle of the jacking mechanism will not change, thereby ensuring clear force. In addition, since the jacking beam does not need to be laterally disengaged from the steps, the structural size of the climbing frame can be reduced, thereby reducing the production cost.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a climbing operation of a climbing frame according to the prior art;

[0021] Figure 2It is a structural schematic diagram of the jacking operation of the climbing frame according to the prior art;

[0022] Figure 3 It is a structural schematic diagram of the jacking operation of the climbing frame according to one embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a lifting beam and a lifting mechanism according to an embodiment of the present invention;

[0024] Figure 5 is a structural schematic diagram of a support bracket from one perspective according to an embodiment of the present invention;

[0025] Figure 6 is a structural schematic diagram of another viewing angle of a support bracket according to an embodiment of the present invention;

[0026] Figure 7 is a structural schematic diagram of the first stage of the support bracket being separated from the step according to an embodiment of the present invention;

[0027] Figure 8 is a structural schematic diagram of a second stage in which a support bracket is separated from a step according to an embodiment of the present invention;

[0028] Fig. 9 is a structural schematic diagram of the third stage of the support bracket being separated from the step according to an embodiment of the present invention;

[0029] Fig.10 is a structural schematic diagram of a fourth stage in which a support bracket is separated from a step according to an embodiment of the present invention;

[0030] Fig.11 It is a schematic structural diagram of steps on a standard section of a tower body according to one embodiment of the present invention.

[0031] In the prior art Figure 1 and Figure 2 Description of reference numerals

[0032] 01 Climbing frame 02 Standard section

[0033] 03 Steps 04 Hanging Board

[0034] 05 Lifting mechanism

[0035] In the embodiment of the present invention Figures 3 to 11 Description of reference numerals

[0036] 1 Beam body 11 Beam body

[0037] 12 Mounting plate 121 Second locking hole

[0038] 2 Support bracket 21 Connecting plate

[0039] 211 first connection part 212 second connection part

[0040] 213 First right angle side 214 Second right angle side

[0041] 215 chamfer 216 first locking hole

[0042] 217 first positioning hole 218 connection hole

[0043] 22 Mounting beam 23 Mounting slot

[0044] 24 Disassembly and assembly of exit port 3 connecting pin

[0045] 4 Standard sections of the tower 5 Steps

[0046] 51 step body 52 stopper

[0047] 53 Second positioning hole 6 Labor-saving lever

[0048] 61: grip portion 62: contact portion

[0049] 7 Climbing frame 8 Lifting mechanism DETAILED DESCRIPTION

[0050] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0051] like Figure 1 As shown, Figure 1 The schematic diagram of the structure of the climbing operation of the climbing frame in the prior art. The climbing operation of the climbing frame 01 refers to the operation of the climbing frame 01 climbing to the previous standard section 02 after the previous standard section 02 is introduced. However, since the step 03 will interfere with the upward climbing of the hanging plate 04 on the top beam, before the climbing frame 01 performs the climbing operation, it is necessary to first apply a lateral thrust to the top beam and the lifting mechanism 05 on the top beam to make the hanging plate 04 separate from the step 03, and then the climbing operation can be performed. Figure 1 As shown in the climbing operation, during the climbing operation, since the hanging step 04 is separated from the step 03, the lifting mechanism 05 on the lifting beam can be kept vertically set under the influence of gravity. Figure 2 As shown, Figure 2The schematic diagram of the structure of the jacking operation of the climbing frame in the prior art. The jacking operation of the climbing frame 01 refers to the operation that the jacking mechanism 05 on the climbing frame 01 can jack up the components above the tower body after the climbing frame 01 completes the climbing operation. Of course, in order to switch the climbing frame from the climbing operation to the jacking operation, it is necessary to apply a lateral thrust to the jacking beam and the jacking mechanism 05 on the jacking beam, so that the hanging plate 04 on the jacking beam is hung on the step 03, and the jacking mechanism 05 on the jacking beam is tilted at this time, and then the operation can be performed as follows. Figure 2 Lifting operation shown.

[0052] Therefore, in the prior art, in order to realize the switching between the climbing operation and the jacking operation of the climbing frame, the following problems will occur: first, it is necessary to apply a lateral thrust to the jacking beam and the jacking mechanism on the jacking beam to hang the hanging plate of the jacking beam or detach it from the step, which is time-consuming, labor-intensive and inefficient; second, during the jacking operation, the jacking mechanism is in an inclined state (such as Figure 2 As shown), and as the telescopic angle of the jacking mechanism changes, it will cause unclear force; thirdly, in order to facilitate the lateral separation of the jacking beam from the step, the structural size of the climbing frame will be large and the cost will be high.

[0053] In view of at least some defects or shortcomings of the prior art, the present invention provides a lifting beam, a climbing frame and a tower crane for a climbing frame of a tower crane, so that the steps will not interfere with the lifting beam when the climbing frame is performing an upward climbing operation. Therefore, when the climbing frame switches between climbing operation and jacking operation, there is no need to apply lateral thrust to the lifting beam and the lifting mechanism on the lifting beam, so as to achieve the purpose of reducing labor intensity and improving efficiency. At the same time, the jacking mechanism on the climbing frame can also be in a vertical state during the jacking operation, and the telescopic angle of the jacking mechanism will not change, thereby ensuring clear force. In addition, since the lifting beam does not need to be laterally separated from the steps, the structural size of the climbing frame can be reduced, thereby achieving the purpose of reducing production costs.

[0054] The jacking beam for a climbing frame of a tower crane according to the present invention will be described below with reference to the accompanying drawings.

[0055] like Figures 3 to 7 As shown, in an embodiment of the present invention, a lifting beam for a tower crane climbing frame is provided, wherein the lifting beam for the tower crane climbing frame comprises: a beam body 1 and a support bracket 2; the support bracket 2 is arranged at the end of the beam body 1, and a hanging groove 23 for accommodating a step 5 on a standard section 4 of a tower crane is formed on the support bracket 2, and a disassembly exit (24) is opened at the lower end of the hanging groove 23.

[0056] In the embodiment of the present invention, the lifting beam for the tower crane climbing frame comprises a beam body 1 and a support bracket 2, the support bracket 2 is arranged at the end of the beam body 1, and a mounting groove 23 for accommodating the step 5 on the tower body standard section 4 of the tower crane is formed on the support bracket 2, and a disassembly exit 24 is provided at the lower end of the mounting groove 23, that is, when the step 5 on the tower body standard section 4 of the tower crane is accommodated in the mounting groove 23, the upper wall surface of the mounting groove 23 can abut against the upper end surface of the step 5 to support the support bracket 2, so that the support bracket 2 can be stably hung on the step 5, and since the lower end of the mounting groove 23 is provided with a disassembly exit 24, This can ensure that the step 5 will not interfere with the jacking beam when the climbing frame 7 is performing an upward climbing operation. Therefore, when the climbing frame 7 switches between the climbing operation and the jacking operation, there is no need to apply lateral thrust to the jacking beam and the jacking mechanism 8 on the jacking beam, so as to achieve the purpose of reducing labor intensity and improving efficiency. At the same time, the jacking mechanism 8 on the climbing frame 7 can also be in a vertical state during the jacking operation, and the telescopic angle of the jacking mechanism 8 will not change, thereby ensuring clear force. In addition, since the jacking beam does not need to be laterally separated from the step 5, the structural size of the climbing frame 7 can be reduced, thereby achieving the purpose of reducing production costs.

[0057] Specifically, there are two support brackets 2, which are disposed at both ends of the crossbeam body 1, so that the two ends of the crossbeam body 1 are stably hung on the two steps 5 of the tower standard section 4 through the two support brackets 2 in a one-to-one correspondence.

[0058] See also Figures 4 to 7 In the embodiment of the present invention, the support bracket 2 includes two connection plates 21 arranged at intervals and a hanging beam 22 located between the two connection plates 21 and connected to the two connection plates 21 respectively. The two connection plates 21 and the hanging beam 22 enclose a hanging groove 23 having a disassembly exit 24 at the lower end. The lower end surface of the hanging beam 22 is used to abut against the upper end surface of the step 5. The two connection plates 21 are used to be arranged at opposite sides of the step 5 and abut against the step 5 respectively. That is, the two parallel connection plates 21 arranged at intervals and the hanging beam 22 connected to the two connection plates 21 at both ends can form a hanging groove 23 having a disassembly exit 24 at the lower end and penetrating from front to back. At the same time, the lower end surface of the hanging beam 22 can abut against the upper end surface of the step 5. The two connection plates 21 can be clamped against the step 5 respectively, so as to further enhance the stability of the support bracket 2 hanging on the step 5.

[0059] In the embodiment of the present invention, the hanging beam 22 is arranged near the upper end of the connecting plate 21, the beam body 1 includes a beam body 11 and a mounting plate 12 arranged at the end of the beam body 11 and extending upward from the beam body 11, one end of the mounting plate 12 extending from the beam body 11 is inserted into the gap at the lower ends of the two connecting plates 21, and the lifting beam also includes a connecting pin 3 passing through the mounting plate 12 and the two connecting plates 21. That is, the beam body 1 and the support bracket 2 can be detachably connected to facilitate replacement and maintenance of the support bracket 2, and the beam body 1 is connected by inserting the mounting plate 12 extending upward from the beam body 11 between the two connecting plates 21, thereby achieving the purpose of ensuring the connection stability.

[0060] Specifically, the mounting plate 12 and the hanging beam 22 are staggered, so when the climbing frame 7 is climbing, the mounting plate 12 of the beam body 1 will not interfere with the step 5. And the mounting plate 12 is located on the side of the hanging beam 22 away from the tower standard section 4.

[0061] like Figure 6 As shown, in an embodiment of the present invention, the connecting plate 21 includes a first connecting portion 211 configured as a rectangle and a second connecting portion 212 configured as a triangle, one of the side edges of the first connecting portion 211 is connected and overlapped with the first right-angled side 213 of the second connecting portion 212, the second right-angled side 214 of the second connecting portion 212 is configured as the lower end of the connecting plate 21, and the two ends of the hanging beam 22 are respectively connected to the first connecting portions 211 of the two connecting plates 21 in a one-to-one correspondence, and the second connecting portion 212 is provided with a connecting hole 218 for the connecting pin 3 to pass through at a position away from the first right-angled side 213 and close to the second right-angled side, and the first connecting portion 211 is used to be arranged close to the standard section 4 of the tower body. The connecting plate 21 includes a first connecting portion 211 set as a rectangle and a second connecting portion 212 set as a triangle. One of the side edges of the first connecting portion 211 is connected and overlapped with the first right-angled side 213 of the second connecting portion 212, that is, the entire connecting plate 21 can be set as a trapezoid with a short side at the upper end and a long side at the lower end. At the same time, one side of the first connecting portion 211 close to the standard section 4 of the tower body can also be a right-angled waist. When the hanging beam 22 is arranged close to the upper end of the connecting plate 21 and close to the standard section 4 of the tower body, and the connecting hole 218 opened on the second connecting portion 212 is arranged away from the first right-angled side 213 of the second connecting portion 212 and close to the second right-angled side 214, it can be ensured that the hanging beam 22 can be staggered with the mounting plate 12. When the climbing frame 7 performs a climbing operation, there will be no problem of interference between the beam body 1 and the step 5. It should be particularly noted that the shape of the first connecting portion 211 is not limited to a perfect rectangle, and can be appropriately deformed based on the rectangle, for example: chamfering or rounding the corners; the second connecting portion 212 is also not limited to a perfect triangle, and can be appropriately deformed based on the triangle, for example: chamfering or rounding the corners.

[0062] See also Figures 4 to 7 In the embodiment of the present invention, the lifting beam further includes a labor-saving lever 6 movably hinged on the connecting plate 21, and the labor-saving lever 6 is used to drive the support bracket 2 to rotate with the connecting pin 3 as the rotation center, so that the hanging beam 22 is separated from the step 5. Since the two connecting plates 21 have a clamping force on the step 5, it takes a lot of effort to directly push the support bracket 2 upward to separate from the step 5. Therefore, the labor-saving lever 6 can be provided on the connecting plate 21, so that by pulling the labor-saving lever 6, the support bracket 2 can be driven to rotate to separate from the restriction of the step 5, thereby further achieving the purpose of reducing labor intensity.

[0063] In the embodiment of the present invention, the labor-saving operating lever 6 includes an abutment portion 62 located on the side of the connecting plate 21 away from the hanging beam 22 and movably hinged on the connecting plate 21, and a hand-held portion 61 connected to the abutment portion 62, the abutment portion 62 is located above the connecting pin 3, and the hand-held portion 61 is used to move in a direction away from the tower body standard section 4, so that the abutment portion 62 abuts against the tower body standard section 4. When the hand-held portion 61 is manually driven to move in a direction away from the tower body standard section 4, the abutment portion 62 will move in a direction close to the tower body standard section 4 until it abuts against the tower body standard section 4, and when the abutment portion 62 abuts against the tower body standard section 4, since the abutment portion 62 is movably hinged to the connecting plate 21, it will act in the opposite direction on the connecting plate 21, so that the upper end of the connecting plate 21 rotates in a direction away from the tower body standard section 4 until the entire support bracket 2 is separated from the step 5. Specifically, Figures 7 to 10 The structure diagram of four stages in the movement process of the support bracket 2 separating from the step 5 is schematically shown.

[0064] Specifically, the movable hinge between the abutting portion 62 and the connecting portion may be provided on the first connecting portion 211 to shorten the length of the abutting portion 62 .

[0065] See also Figure 6 In the embodiment of the present invention, the lower end of the connecting plate 21 is formed with a chamfer 215 for facing the tower body standard section 4, and when the entire support bracket 2 is separated from the step 5, the chamfer 215 can be arranged in parallel with the tower body standard section 4, so that when the labor-saving operating lever 6 is used to drive the support bracket 2 to rotate with the connecting pin 3 as the rotation center, the chamfer 215 can prevent the connecting plate 21 from interfering with the tower body standard section 4. Specifically, the chamfer 215 is arranged at the lower end of the first connecting portion 211.

[0066] like Figures 7 to 10As shown, in the embodiment of the present invention, a first locking hole 216 is provided on the connecting plate 21, and a second locking hole 121 is provided on the mounting plate 12. The first locking hole 216 and the second locking hole 121 are used for docking after the support bracket 2 is separated from the step 5, and the lifting beam further includes a locking member inserted in the first locking hole 216 and the second locking hole 121. That is, when the support bracket 2 is separated from the step 5, the position of the support bracket 2 can be locked by inserting the locking member in the first locking hole 216 and the second locking hole 121.

[0067] like Figure 6 and Fig.11 As shown, in the embodiment of the present invention, a first positioning hole 217 is further provided on the connecting plate 21, and the first positioning hole 217 is used to dock with the second positioning hole 53 on the step 5 when the support bracket 2 is hung on the step 5, so as to detect whether the support bracket 2 is in place.

[0068] In order to achieve the above object, the present invention further provides a climbing frame 7, wherein the climbing frame 7 comprises a frame body and the lifting beam for the tower crane climbing frame as described above, and the beam body 1 of the lifting beam is arranged on the frame body. Since the climbing frame 7 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0069] In order to achieve the above object, the present invention further provides a tower crane, wherein the tower crane comprises a tower body standard section 4, steps 5 arranged on the tower body standard section 4, and the climbing frame 7 described above. Since the tower crane adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0070] Specifically, see Fig.11 The step 5 includes a step 5 main body 51 arranged on the standard section 4 of the tower body and a stopper 52 extending from the upper end of the step 5 main body 51. The stopper 52 and the standard section 4 of the tower body are arranged at an interval. The lower end surface of the hanging beam 22 of the supporting bracket 2 abuts against the upper end surface of the step 5 main body 51 located between the stopper 52 and the standard section 4 of the tower body, so that the hanging beam 22 can be restricted between the stopper 52 and the standard section 4 of the tower body.

[0071] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A lifting beam for a tower crane climbing frame, characterized in that: The lifting beam comprises: a beam body (1); and A support bracket (2) is arranged at the end of the crossbeam body (1), and a mounting groove (23) is formed on the support bracket (2) for accommodating a step (5) on a standard tower section (4) of a tower crane, and a disassembly exit (24) is formed at the lower end of the mounting groove (23); The support bracket (2) comprises two connection plates (21) arranged at intervals and a hanging beam (22) located between the two connection plates (21) and respectively connected to the two connection plates (21); the hanging beam (22) and the two connection plates (21) enclose the hanging groove (23) having the disassembly and assembly exit (24) open at the lower end and extending from front to back; the crossbeam body (1) is hingedly connected to the corner positions of the lower ends of the two connection plates (21) away from the tower body standard section (4) through a connecting pin (3); The lifting beam also includes a labor-saving operating lever (6) movably hinged on the connecting plate (21), and the labor-saving operating lever (6) is used to drive the support bracket (2) to rotate with the connecting pin (3) as the rotation center and can abut against the tower body standard section (4) to enable the support bracket (2) to detach from the step (5).

2. The lifting beam for the tower crane climbing frame according to claim 1, characterized in that: The lower end surface of the hanging beam (22) is used to abut against the upper end surface of the step (5), and the two connecting plates (21) are used to be arranged on opposite sides of the step (5) and abut against the step (5) respectively.

3. The lifting beam for the tower crane climbing frame according to claim 2, characterized in that: The hanging beam (22) is arranged near the upper end of the connecting plate (21), and the beam body (1) includes a beam body (11) and a mounting plate (12) arranged at the end of the beam body (11) and extending upward from the beam body (11), and one end of the mounting plate (12) extending from the beam body (11) is inserted into the gap at the lower ends of the two connecting plates (21), and the lifting beam also includes a connecting pin (3) passing through the mounting plate (12) and the two connecting plates (21).

4. The lifting beam for the tower crane climbing frame according to claim 3, characterized in that: The connecting plate (21) comprises a first connecting portion (211) arranged in a rectangular shape and a second connecting portion (212) arranged in a triangular shape, one side of the first connecting portion (211) is connected to and overlaps with a first right-angled side (213) of the second connecting portion (212), the second right-angled side (214) of the second connecting portion (212) is arranged as the lower end of the connecting plate (21), the two ends of the hanging beam (22) are respectively connected to the first connecting portions (211) of the two connecting plates (21) in a one-to-one correspondence, a connecting hole (218) for the connecting pin (3) to pass through is provided at a position of the second connecting portion (212) away from the first right-angled side (213) and close to the second right-angled side, and the first connecting portion (211) is used to be arranged close to the tower body standard section (4).

5. The lifting beam for the tower crane climbing frame according to claim 4, characterized in that: The labor-saving operating lever (6) comprises a contact portion (62) located on a side of the connecting plate (21) away from the hanging beam (22) and movably hinged to the connecting plate (21), and a hand-held portion (61) connected to the contact portion (62), wherein the contact portion (62) is located above the connecting pin (3), and the hand-held portion (61) is used to move in a direction away from the tower body standard section (4) so ​​that the contact portion (62) contacts the tower body standard section (4).

6. The lifting beam for the tower crane climbing frame according to claim 5, characterized in that: The lower end of the connecting plate (21) is formed with a chamfer (215) for facing the tower body standard section (4).

7. The lifting beam for the tower crane climbing frame according to claim 3, characterized in that: The connecting plate (21) is provided with a first locking hole (216), and the mounting plate (12) is provided with a second locking hole (121). The first locking hole (216) and the second locking hole (121) are used for docking the supporting bracket (2) after it is separated from the step (5). The lifting beam also includes a locking member which is inserted into the first locking hole (216) and the second locking hole (121).

8. A climbing frame, characterized in that: The climbing frame (7) comprises a frame body and a lifting beam for a tower crane climbing frame according to any one of claims 1 to 7, wherein a beam body (1) of the lifting beam is arranged on the frame body.

9. A tower crane, characterized in that: The tower crane comprises a tower body standard section (4), steps (5) arranged on the tower body standard section (4), and a climbing frame (7) according to claim 8.

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