Chain type cantilever crane

Abstract

The utility model belongs to the technical field of hoisting equipment, and discloses a chain type cantilever crane which comprises an upright post, a rotary cross beam, a rotary driving component and a clamping component, the rotating cross beam is vertically connected to the stand column and can rotate around the stand column; the rotating driving assembly comprises a floating tensioning connecting piece, a rotating chain, a rotating chain wheel and a rotating driving piece, the rotating driving piece is arranged on the rotating cross beam and connected with the rotating chain wheel, the rotating driving piece is configured to drive the rotating chain wheel to rotate, the first end of the rotating chain is fixed to the stand column, and the second end of the rotating chain bypasses the rotating chain wheel; the rotating chain is arranged on the stand column and connected with a floating tensioning connecting piece arranged on the stand column, and the floating tensioning connecting piece can provide pulling force for the rotating chain to enable the rotating chain to be tensioned. The clamping assembly is arranged on the rotating cross beam in a lifting mode through the lifting driving assembly. The chain type cantilever crane is high in rotation precision.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, in particular to a chain-type cantilever crane. Background Art

[0002] Shield segment reinforcement cages are primarily manufactured using the Shield Segment Flat Mesh Forming Machine and the Shield Segment 3D Mesh Forming Machine. The Shield Segment Flat Mesh Forming Machine is primarily used to produce single-piece mesh, while the Shield Segment 3D Mesh Forming Machine is primarily used to produce 3D mesh. During processing, the material crane automatically grabs the single-piece mesh produced by the Shield Segment Flat Mesh Forming Machine and places it into the mold of the Shield Segment 3D Mesh Forming Machine.

[0003] Chain-type jib cranes are widely used for transporting single-piece mesh due to their compact footprint, flexible movement, and wide application. However, existing chain-type jib cranes often utilize a motor-slewing support system, which can easily cause wobbling when the crossbeam rotates to a preset position. Furthermore, the slewing accuracy cannot meet the requirements for shield segment reinforcement cage processing. Utility Model Content

[0004] The utility model aims to provide a chain-type cantilever crane, which is used to solve the problems of shaking and low rotation accuracy when the crossbeam rotates.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The chain-type cantilever crane includes a column, a rotating beam, a rotating drive assembly and a clamping assembly; the rotating beam is vertically connected to the column and can rotate with the column as the axis; the rotating drive assembly includes a floating tensioning connector, a rotating chain, a rotating sprocket and a rotating drive member, the rotating drive member is arranged on the rotating beam and connected to the rotating sprocket, the rotating drive member is configured to drive the rotating sprocket to rotate, the first end of the rotating chain is fixed on the column, the second end of the rotating chain passes around the rotating sprocket and is connected to the floating tensioning connector arranged on the column, the floating tensioning connector can provide tension to the rotating chain to keep the rotating chain tensioned; the clamping assembly can be lifted and lowered on the rotating beam through a lifting drive assembly.

[0007] Optionally, the floating tension connection member is a cylinder, and the cylinder is rotatably connected to the column through a fixed seat.

[0008] Optionally, the rotary drive assembly further includes a tensioning adjustment member and a tensioning seat, the tensioning seat is rotatably arranged on the column, the first end of the rotary chain is connected to the column via the tensioning adjustment member arranged on the tensioning seat, and the position of the tensioning adjustment member on the tensioning seat is adjustable.

[0009] Optionally, the tension adjustment member is screwed to the tension seat.

[0010] Optionally, the chain-type cantilever crane also includes a positioning assembly, which includes a positioning drive, a positioning pin and a positioning seat. The positioning drive is arranged on one of the rotating beam and the column, and the positioning seat is arranged on the other of the rotating beam and the column. The positioning pin is arranged at the output end of the positioning drive, and a positioning hole for inserting the positioning pin is provided on the positioning seat.

[0011] Optionally, the positioning seat is arranged on the column through a fixing plate, and the circumferential position of the positioning seat on the fixing plate is adjustable.

[0012] Optionally, the fixing plate is provided with an arc-shaped slide rail coaxial with the column, the positioning seat is slidably provided on the arc-shaped slide rail, and the positioning seat is locked on the fixing plate by a detachable locking member.

[0013] Optionally, two positioning drive members are circumferentially arranged on the rotating beam, the two positioning drive members are respectively located on both sides of the circumference of the rotating drive member, the two positioning pins are respectively connected to the two positioning drive members, and three positioning seats are circumferentially spaced apart on the column.

[0014] Optionally, the chain-type cantilever crane further includes guide wheels, at least two of which are rotatably disposed on the rotating beam and in rolling contact with the column.

[0015] Optionally, the chain-type cantilever crane further includes a transverse drive assembly, the lifting drive assembly is slidably arranged on the rotating beam along the extension direction of the rotating beam, and the transverse drive assembly is configured to drive the lifting drive assembly to move.

[0016] Beneficial effects of the utility model:

[0017] The chain-type cantilever crane in the utility model utilizes a rotating driving member to drive the rotating sprocket to rotate. Under the meshing action of the rotating sprocket and the rotating chain, the rotating sprocket drives the rotating beam to rotate relative to the column. During the rotation process, the floating tensioning connecting member provides tensioning force to the rotating chain, thereby reducing the possibility of shaking of the rotating beam due to inertia when the rotating beam stops rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a chain-type cantilever crane in an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0020] Figure 3 This is a partial top view of the chain-type cantilever crane when the rotating crossbeam is in the first working position in the embodiment of the utility model;

[0021] Figure 4 It is a partial top view of the chain-type cantilever crane when the rotating crossbeam is in the second working position in the embodiment of the utility model;

[0022] Figure 5 It is a partial top view of the chain-type cantilever crane when the rotating crossbeam is in the third working position in the embodiment of the utility model;

[0023] Figure 6 This is a top view of a chain-type cantilever crane in an embodiment of the present utility model;

[0024] Figure 7 It is a cross-sectional view of the positioning assembly in the embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Pillar;

[0027] 2. Rotating beam;

[0028] 3. Rotary drive assembly; 31. Floating tension connector; 32. Rotating chain; 33. Rotating sprocket; 34. Rotary drive member; 35. Tension adjustment member; 36. Tension seat; 37. Fixed seat; 38. Mounting seat;

[0029] 4. Clamping assembly;

[0030] 5. Lifting drive assembly; 51. Transverse moving frame; 52. Lifting drive member; 53. Lifting frame; 54. Lifting sprocket assembly;

[0031] 6. Positioning assembly; 61. Positioning drive member; 62. Positioning pin; 63. Positioning seat; 63a. First positioning seat; 63b. Second positioning seat; 63c. Third positioning seat; 64. Connecting seat; 65. Fixing plate; 66. Arc slide rail;

[0032] 7. Transverse drive assembly; 71. Transverse drive member; 72. Support bearing; 73. Transverse driving sprocket; 74. Transverse driven sprocket; 75. Sprocket shaft;

[0033] 8. Guide wheel. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0038] refer to Figure 1-Figure 7As shown, in an embodiment of the present invention, a chain-type cantilever crane is proposed for hoisting workpieces including but not limited to single-piece nets. The chain-type cantilever crane includes a column 1, a rotating beam 2, a rotating drive assembly 3, a clamping assembly 4 and a lifting drive assembly 5, wherein the rotating beam 2 is vertically connected to the column 1 and can rotate with the column 1 as an axis, the clamping assembly 4 is arranged on the rotating beam 2 for clamping the workpiece, the lifting drive assembly 5 is configured to drive the clamping assembly 4 to rise and fall, and the rotating drive assembly 3 includes a floating tensioning connector 31 , a rotating chain 32, a rotating sprocket 33 and a rotating driving member 34. The rotating driving member 34 is arranged on the rotating beam 2 and is connected to the rotating sprocket 33 to drive the rotating sprocket 33 to rotate. The first end of the rotating chain 32 is fixed on the column 1, and the second end of the rotating chain 32 bypasses the rotating sprocket 33 and is connected to the floating tensioning connector 31 provided on the column 1. The rotating chain 32 is engaged with the rotating sprocket 33, and the floating tensioning connector 31 provides tension to the rotating chain 32 to keep the rotating chain 32 in a tensioned state.

[0039] The above-mentioned chain-type cantilever crane utilizes the rotating driving member 34 to drive the rotating sprocket 33 to rotate. Under the meshing action of the rotating sprocket 33 and the rotating chain 32, the rotating sprocket 33 drives the rotating beam 2 to rotate relative to the column 1. During the rotation process, the floating tensioning connector 31 provides tensioning force to the rotating chain 32, reducing the possibility of the rotating beam 2 shaking due to inertia when it stops rotating.

[0040] refer to Figure 1 and Figure 2 As shown, a mounting seat 38 is provided on the lower surface of one end of the rotating crossbeam 2, adjacent to the upright post 1. A rotating drive member 34 is mounted on the rotating crossbeam 2 via the mounting seat 38. The rotating drive member 34 is a motor, whose output shaft extends downward and connects to the rotating sprocket 33. The floating tensioning connector 31 is a pneumatic cylinder, whose piston end maintains a contracting tendency to keep the rotating chain 32 taut. Specifically, the cylinder is connected to the upright post 1 via a fixed seat 37, which is rotatably connected to the upright post 1 via a first rotating shaft, the axial direction of which is aligned with the height of the upright post 1.

[0041] In other embodiments, the floating tension connection member 31 may also be an oil-gas spring.

[0042] refer to Figure 2-Figure 4As shown, the rotary drive assembly 3 also includes a tensioning member 35 and a tensioning seat 36. The first end of the rotary chain 32 is connected to the column 1 via the tensioning member 35 mounted on the tensioning seat 36. The tensioning seat 36 is rotatably mounted on the column 1 via a second rotating shaft, the axial direction of which is also aligned with the height of the column 1. It is important to emphasize that the position of the tensioning member 35 on the tensioning seat 36 is adjustable. Specifically, the tensioning member 35 is threaded onto the tensioning seat 36, and tightening the tensioning member 35 facilitates tensioning of the rotary chain 32.

[0043] Optionally, a tension adjustment member 35 is also connected between the cylinder serving as the floating tension connection member 31 and the rotating chain 32. The position of the tension adjustment member 35 and the cylinder is adjustable to further increase the adjustability of the rotating chain 32. Specifically, the tension adjustment member 35 is also screwed to the piston end of the cylinder.

[0044] refer to Figure 2 、 Figure 6 and Figure 7 As shown, in order to further improve the stability of the rotating beam 2 when it stops rotating, the chain-type cantilever crane also includes a positioning assembly 6, which is used to lock the rotating beam 2 and the column 1. In this embodiment, the positioning assembly 6 includes a positioning drive 61, a positioning pin 62, and a positioning seat 63. The positioning drive 61 is provided on one of the rotating beam 2 and the column 1, while the positioning seat 63 is provided on the other of the rotating beam 2 and the column 1. The positioning pin 62 is provided at the output end of the positioning drive 61, and the positioning seat 63 is provided with a positioning hole for inserting the positioning pin 62.

[0045] Specifically, the positioning driver 61 is a pneumatic cylinder mounted on the mounting base 38 via a connecting base 64, while the positioning base 63 is fixed to the column 1 via a fixing plate 65. When the pneumatic cylinder serving as the positioning driver 61 is extended, the positioning pin 62 is inserted into the positioning hole, achieving positioning between the rotating crossbeam 2 and the column 1; when the pneumatic cylinder serving as the positioning driver 61 is retracted, the positioning pin 62 is disengaged from the positioning hole, facilitating the rotation of the rotating crossbeam 2.

[0046] More specifically, in order to reduce the difficulty of inserting the positioning pin 62 into the positioning hole, the positioning pin 62 is a tapered pin.

[0047] In order to improve the stability of the rotating beam 2 during rotation, the chain cantilever crane further includes guide wheels 8 , at least two guide wheels 8 are rotatably arranged on the connecting seat 64 and in rolling contact with the column 1 .

[0048] It is understood that the rotating beam 2 on the chain cantilever crane includes at least two working positions, so that the workpiece can be transferred from one working position to another working position. Figure 3 ), the second working position ( Figure 4) and the third working position ( Figure 5 ) as an example, in this embodiment, there are two positioning drive members 61, namely the first positioning drive member and the second positioning drive member, the first positioning drive member and the second positioning drive member are respectively arranged on both sides of the circumference of the rotation drive member 34 and are respectively connected with the first positioning pin and the second positioning pin, wherein the first positioning drive member is arranged on the side of the rotation drive member 34 close to the floating tensioning connection member 31, and the second positioning drive member is arranged on the side of the rotation drive member 34 close to the tensioning seat 36, and there are three positioning seats 63, namely the first positioning seat 63a, the second positioning seat 63b and the third positioning seat 63c, which are arranged in sequence from the side close to the floating tensioning connection member 31 to the side of the tensioning seat 36.

[0049] When the rotating beam 2 rotates to the first working position, the first positioning drive member drives the first positioning pin to be inserted into the first positioning seat 63a; when the rotating beam 2 rotates to the second working position, the first positioning drive member drives the first positioning pin to be inserted into the second positioning seat 63b; when the rotating beam 2 rotates to the third working position, the second positioning drive member drives the second positioning pin to be inserted into the third positioning seat 63c.

[0050] In this embodiment, the circumferential position of the positioning seat 63 on the fixed plate 65 is adjustable to accommodate different preset operating positions of the rotating crossbeam 2. Specifically, the fixed plate 65 is provided with an arcuate slide rail 66, and the positioning seat 63 is slidably mounted on the arcuate slide rail 66 and locked to the fixed plate 65 via a removable locking member. It will be understood that the arcuate slide rail 66 is coaxial with the column 1. To adjust the position of the positioning seat 63, simply remove the locking member and adjust the position of the positioning seat 63 on the fixed plate 65. Specifically, the locking member is a bolt that can be inserted between the fixed plate 65 and the positioning seat 63.

[0051] It is understandable that, according to the number of preset working positions of the rotating beam 2 , the number of positioning driving members 61 and positioning seats 63 can also be adaptively adjusted, which is not completely consistent with this embodiment.

[0052] refer to Figure 6 As shown, the lifting drive assembly 5 includes a lifting drive member 52, a lifting sprocket assembly 54, and a lifting frame 53. The lifting frame 53 is slidably mounted on the rotating crossbeam 2 along the height direction of the column 1. The clamping assembly 4 is disposed at the lower end of the lifting frame 53. The lifting drive member 52 is mounted on the rotating crossbeam 2 and is in transmission connection with the lifting frame 53 via the lifting sprocket assembly 54 to drive the lifting frame 53 up and down, thereby driving the clamping assembly 4 up and down. In this embodiment, the lifting drive member 52 is a motor, and the clamping assembly 4 can adopt various clamping structures in the prior art depending on the workpiece to be clamped, which are not specifically limited here.

[0053] In order to improve the operating range of the chain cantilever crane, the chain cantilever crane also includes a transverse drive assembly 7, and the lifting drive assembly 5 is slidably arranged on the rotating beam 2 along the extension direction of the rotating beam 2 through the transverse moving frame 51. The transverse drive assembly 7 is configured to drive the lifting drive assembly 5 to move along the extension direction of the rotating beam 2.

[0054] Specifically, the transverse drive assembly 7 includes a transverse drive member 71, a transverse driving sprocket 73, a transverse driven sprocket 74 and a transverse chain. The transverse drive member 71 adopts a motor. The output shaft of the motor vertically passes through the rotating beam 2 in the horizontal direction and is limited to the rotating beam 2 through the support bearing 72. The transverse driving sprocket 73 is sleeved on the output shaft of the motor and is located in the rotating beam 2. The transverse driven sprocket 74 is rotatably arranged at the end of the rotating beam 2 away from the column 1 through the sprocket shaft 75. The transverse chain is wound between the transverse driving sprocket 73 and the transverse driven sprocket 74 to realize the transmission connection between the transverse driving sprocket 73 and the transverse driven sprocket 74. The transverse moving frame 51 is fixed on the transverse chain to move driven by the transverse chain.

[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Chain type cantilever crane, characterized by: The chain cantilever crane comprises: Column (1); A rotating crossbeam (2), the rotating crossbeam (2) being vertically connected to the upright post (1) and being capable of rotating about the upright post (1); A rotary drive assembly (3), the rotary drive assembly (3) comprising a floating tensioning connector (31), a rotary chain (32), a rotary sprocket (33) and a rotary drive member (34), the rotary drive member (34) being arranged on the rotary beam (2) and connected to the rotary sprocket (33), the rotary drive member (34) being configured to drive the rotary sprocket (33) to rotate, the first end of the rotary chain (32) being fixed on the column (1), the second end of the rotary chain (32) passing around the rotary sprocket (33) and being connected to the floating tensioning connector (31) arranged on the column (1), the floating tensioning connector (31) being capable of providing tension to the rotary chain (32) so as to keep the rotary chain (32) tensioned; A clamping assembly (4) is provided on the rotating beam (2) in a liftable manner via a lifting drive assembly (5).

2. The chain-type cantilever crane according to claim 1, characterized in that: The floating tension connection member (31) is a cylinder, and the cylinder is rotatably connected to the column (1) through a fixed seat (37).

3. The chain-type cantilever crane according to claim 1, characterized in that: The rotary drive assembly (3) further comprises a tensioning adjusting member (35) and a tensioning seat (36), wherein the tensioning seat (36) is rotatably arranged on the column (1), and the first end of the rotary chain (32) is connected to the column (1) via the tensioning adjusting member (35) arranged on the tensioning seat (36), and the position of the tensioning adjusting member (35) on the tensioning seat (36) is adjustable.

4. The chain-type cantilever crane according to claim 3, characterized in that: The tension adjustment member (35) is screwed to the tension seat (36).

5. The chain-type cantilever crane according to claim 1, characterized in that: The chain-type cantilever crane further includes a positioning assembly (6), the positioning assembly (6) including a positioning drive member (61), a positioning pin (62) and a positioning seat (63), the positioning drive member (61) being arranged on one of the rotating crossbeam (2) and the column (1), the positioning seat (63) being arranged on the other of the rotating crossbeam (2) and the column (1), the positioning pin (62) being arranged at the output end of the positioning drive member (61), and the positioning seat (63) being provided with a positioning hole for inserting the positioning pin (62).

6. The chain-type cantilever crane according to claim 5, characterized in that: The positioning seat (63) is arranged on the column (1) through a fixing plate (65), and the circumferential position of the positioning seat (63) on the fixing plate (65) is adjustable.

7. The chain-type cantilever crane according to claim 6, characterized in that: The fixing plate (65) is provided with an arc-shaped slide rail (66) coaxial with the column (1), the positioning seat (63) is slidably provided on the arc-shaped slide rail (66), and the positioning seat (63) is locked on the fixing plate (65) via a detachable locking member.

8. The chain-type cantilever crane according to claim 6, characterized in that: Two positioning drive members (61) are circumferentially arranged on the rotating beam (2), and the two positioning drive members (61) are respectively located on both sides of the circumference of the rotating drive member (34). The two positioning pins (62) are respectively connected to the two positioning drive members (61). Three positioning seats (63) are circumferentially spaced on the column (1).

9. The chain-type cantilever crane according to claim 1, characterized in that: The chain-type cantilever crane further comprises guide wheels (8), at least two of which are rotatably arranged on the rotating beam (2) and in rolling contact with the column (1).

10. The chain-type cantilever crane according to claim 1, characterized in that: The chain-type cantilever crane further comprises a transverse drive assembly (7), the lifting drive assembly (5) is slidably arranged on the rotating beam (2) along the extension direction of the rotating beam (2), and the transverse drive assembly (7) is configured to drive the lifting drive assembly (5) to move.

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