Bracket for fly jib of crane

Abstract

The utility model discloses a bracket for a crane fly jib, which relates to the technical field of cranes, in particular to a bracket for a crane fly jib, which comprises a fixed side plate, a first bracket supporting plate fixed on one side of the fixed side plate, and a locking plate fixed on the top of the first bracket supporting plate. Meanwhile, the first bracket supporting plate and the locking plate are jointly provided with an insertion groove for insertion of a plug pin, the bottom of one end of the first bracket supporting plate is connected with a second bracket supporting plate through a shaft pin, and the top of the first bracket supporting plate and the top of the second bracket supporting plate are connected with a plurality of sliding rollers through shaft pins. According to the bracket for the crane fly jib, when the fly jib is pulled to be installed, the fly jib rotates to the sliding roller, the sliding roller can rotate, the sliding roller is obliquely arranged, and the friction force between the fly jib and the bracket is reduced through rotation of the sliding roller, so that the fly jib is easier to pull, and the fly jib is more convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a bracket for a crane jib. Background Technique

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. A jib is usually hung on one side of the main boom of the crane. According to the operating conditions, currently, when a crane selects a jib, the top of the jib and the main boom are detachably connected by a pin, and after rotation, it is in a folded state. The folded jib adheres to one side of the main boom and is then supported by a jib bracket. However, the bracket for supporting the jib is usually a simple single support rod structure. After the jib rotates, it is lifted by this single support rod. When installing the jib, first, the pin on the bracket needs to be extracted. However, since the pin is usually cylindrical, when extracting the pin, the pin is not easily stressed, resulting in difficult disassembly of the pin. And when pulling the jib to rotate, the jib is on the bracket, and the overall mass of the jib generally exceeds 1.5 tons, resulting in a large frictional force between the jib and the bracket, making it difficult to pull the jib, thus leading to inconvenient installation of the jib. For this reason, we propose a bracket for a crane jib. Content of the Utility Model

[0003] The utility model provides a bracket for a crane jib, which solves the problems raised in the above background technique.

[0004] To achieve the above objectives, the utility model is realized through the following technical solutions: A bracket for a crane jib includes a fixed side plate. On one side of the fixed side plate, a first bracket support plate is fixed. And on the top of the first bracket support plate, a locking plate is fixed. At the same time, a slot for inserting a pin is jointly opened on the first bracket support plate and the locking plate. The bottom of one end of the first bracket support plate is connected to a second bracket support plate through a shaft pin. And on the tops of the first bracket support plate and the second bracket support plate, a plurality of sliding rollers are connected through shaft pins. The plurality of sliding rollers are evenly arranged on the tops of the first bracket support plate and the second bracket support plate. The sliding rollers are arranged obliquely on the tops of the first bracket support plate and the second bracket support plate. At the same time, a push column for pushing out the pin is arranged at the bottom of the first bracket support plate.

[0005] Optionally, at the top and bottom of the other end of the first bracket support plate, triangular support frames with a support function are fixed through bolts. And on one side of the two triangular support frames, they are fixed to one side of the fixed side plate through bolts.

[0006] Optionally, four fixed columns are fixed at the bottom of the first bracket support plate. And a limiting plate is jointly fixed at the bottom ends of the four fixed columns.

[0007] Optionally, a push column is movably connected to the middle of the limit plate, and the top end of the push column passes through the limit plate and is fixed with a first fixing plate. At the same time, the bottom of the first fixing plate abuts against the top of the limit plate.

[0008] Optionally, the top of the first fixing plate is fixed to the bottom end of the push-out column, and the top end of the push-out column faces the slot. At the same time, a second fixing plate for operation is fixed to the bottom end of the push column.

[0009] Optionally, a spring with a reset function is sleeved on the push column, and the top end of the spring is fixed to the bottom end of the limit plate, and the bottom end of the spring is fixed to the top of the second fixing plate.

[0010] Optionally, a connection groove is formed in the middle of one end of the first bracket support plate, and a connection block corresponding to the connection groove is fixed in the middle of one end of the second bracket support plate.

[0011] Optionally, a connection pin is inserted into one end of the first bracket support plate, and the connection pin passes through the connection groove and the connection block, and the connection block and the first bracket support plate are jointly inserted with the connection pin.

[0012] The utility model has the following beneficial effects:

[0013] 1. For the bracket for the auxiliary boom of the crane, when the auxiliary boom is pulled for installation, the auxiliary boom rotates onto the sliding roller, and the sliding roller can rotate. And because the sliding roller is inclined, through the rotation of the sliding roller, the friction between the auxiliary boom and the bracket is reduced, and then the auxiliary boom is easier to be pulled, and thus the installation of the auxiliary boom is more convenient.

[0014] 2. For the bracket for the auxiliary boom of the crane, by pushing the second fixing plate upward, and then pushing the push column to move. Under the push of the push column, the first fixing plate can push the push-out column to move upward. Under the push of the push-out column, the pin can be smoothly pushed out, avoiding the situation that it is not easy to apply force when the pin is pulled out of the slot, so that the installation of the auxiliary boom is more convenient.

[0015] 3. For the bracket for the auxiliary boom of the crane, by rotating the second bracket support plate with the axle pin as the rotation axis, the second bracket support plate can be butted against the first bracket support plate, and then the fixing of the second bracket support plate is completed through the insertion of the connection pin, and then the supporting plane of the bracket is extended, and thus it can be adjusted according to the auxiliary booms of different widths, so that the supporting effect of the bracket is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model;

[0017] Figure 2 is a schematic structural diagram of another perspective of the utility model;

[0018] Figure 3 This is a schematic cross-sectional structure diagram of the present utility model;

[0019] Figure 4 This is a schematic structure diagram of the connection of the limit plate of the present utility model;

[0020] Figure 5 This is a schematic structure diagram of the connection of the first bracket support plate of the present utility model;

[0021] Figure 6 This is a schematic structure diagram of the connection of the second bracket support plate of the present utility model.

[0022] In the figure: 1, fixed side plate; 2, first bracket support plate; 3, triangular support frame; 4, locking plate; 5, second bracket support plate; 6, sliding roller; 7, pushing column; 8, connecting pin; 9, pushing out column; 10, fixed column; 11, first fixing plate; 12, limit plate; 13, second fixing plate; 14, spring. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 4, Bracket for the auxiliary boom of a crane, including a fixed side plate 1. On one side of the fixed side plate 1, a first bracket support plate 2 is fixed. The first bracket support plate 2 supports the auxiliary boom. And a locking plate 4 is fixed on the top of the first bracket support plate 2. At the same time, a slot for inserting a bolt is jointly opened on the first bracket support plate 2 and the locking plate 4. By inserting the bolt into the slot, the auxiliary boom is locked. The bottom of one end of the first bracket support plate 2 is connected to a second bracket support plate 5 through a pin, forming a hinge structure with the pin as the rotation axis, enabling the second bracket support plate 5 to rotate. And a plurality of sliding rollers 6 are connected to the tops of the first bracket support plate 2 and the second bracket support plate 5 through pins, forming a hinge structure with the pin as the rotation axis, enabling the sliding rollers 6 to rotate. By the rotation of the sliding rollers 6, the friction between the auxiliary boom and the bracket is reduced, and thus the installation of the auxiliary boom is more convenient. The plurality of sliding rollers 6 are evenly arranged on the tops of the first bracket support plate 2 and the second bracket support plate 5. The sliding rollers 6 are arranged obliquely on the tops of the first bracket support plate 2 and the second bracket support plate 5, so that the rotation direction of the sliding rollers 6 is as close as possible to the rotation direction of the auxiliary boom, making the rotation of the auxiliary boom more convenient. At the same time, a push column 9 for pushing out the bolt is arranged at the bottom of the first bracket support plate 2. Under the push of the push column 9, the bolt can be removed more smoothly.

[0025] Please refer to Figures 1 to 3 , at the top and bottom of the other end of the first bracket support plate 2, triangular support frames 3 with a support function are fixed through bolts. Due to the triangular structure of the triangular support frames 3, the triangular support frames 3 can support the first bracket support plate 2, making the support effect of the triangular support frames 3 better. And one side of each of the two triangular support frames 3 is fixed to one side of the fixed side plate 1 through bolts.

[0026] Please refer to Figures 1 to 4 , four fixed columns 10 are fixed at the bottom of the first bracket support plate 2. And a limit plate 12 is jointly fixed at the bottom ends of the four fixed columns 10. Under the connection of the fixed columns 10, the limit plate 12 can be fixedly connected to the first bracket support plate 2.

[0027] Please refer to Figures 1 to 4 , a push column 7 is movably connected to the middle of the limit plate 12. Under the action of the limit plate 12, the movement track of the push column 7 can be limited. And the top end of the push column 7 passes through the limit plate 12 and is fixed with a first fixing plate 11. Under the push of the push column 7, the first fixing plate 11 can move upward. At the same time, the bottom of the first fixing plate 11 abuts against the top of the limit plate 12. Under the blocking and limitation of the limit plate 12, the first fixing plate 11 has a maximum downward movement limit.

[0028] Please refer to Figures 1 to 4, the top of the first fixed plate 11 is fixed to the bottom end of the ejector post 9. Under the push of the first fixed plate 11, the ejector post 9 can push the bolt upward. And under the support of the first fixed plate 11, when the bolt is inserted, the ejector post 9 can support the bolt, making the insertion of the bolt more firm. At the same time, the top end of the ejector post 9 is directly opposite to the slot. Also, a second fixed plate 13 for operation is fixed to the bottom end of the push post 7. By pushing the second fixed plate 13, the push post 7 can be moved under the drive of the second fixed plate 13, making the operation of the ejector post 9 more convenient.

[0029] Please refer to Figures 1 to 4 , a spring 14 with a reset function is sleeved on the push post 7. The top end of the spring 14 is fixed to the bottom end of the limit plate 12, and the bottom end of the spring 14 is fixed to the top of the second fixed plate 13. Under the action of the elastic force of the spring 14, the second fixed plate 13 can drive the ejector post 9 to return to its original position, facilitating the insertion of the bolt.

[0030] Please refer to Figures 1 to 6 , a connection groove is provided in the middle of one end of the first bracket support plate 2, and a connection block corresponding to the connection groove is fixed in the middle of one end of the second bracket support plate 5. Through the docking of the connection block and the connection groove, the fixation between the first bracket support plate 2 and the second bracket support plate 5 is facilitated, thus completing the limitation of the rotated second bracket support plate 5.

[0031] Please refer to Figures 1 to 6 , a connection pin 8 is inserted into one end of the first bracket support plate 2, and the connection pin 8 passes through the connection groove and the connection block. The connection block and the first bracket support plate 2 are jointly inserted with the connection pin 8. Through the insertion of the connection pin 8 with the first bracket support plate 2 and the connection block, the second bracket support plate 5 is further limited, so that the rotated second bracket support plate 5 can be fixed.

[0032] In summary, for the bracket for the auxiliary boom of the crane, during use, when installing the auxiliary boom, the second fixing plate 13 is pushed upward. Under the push of the second fixing plate 13, the push column 7 moves upward, and then drives the first fixing plate 11 to move upward. Subsequently, driven by the first fixing plate 11, the push-out column 9 moves upward, so that the push-out column 9 extends into the slot to push out the pin. Then, under the action of the elastic force of the spring 14, the push-out column 9 can return to its original position. When the auxiliary boom slides onto the sliding roller 6, under the action of the inclined and rotating sliding roller 6, the pulling of the auxiliary boom becomes easier, and thus the installation of the auxiliary boom is more convenient. At the same time, when installing different auxiliary booms on the main boom, the second bracket support plate 5 can be rotated so that the first bracket support plate 2 and the second bracket support plate 5 can be connected to extend its support plane. After rotating the second bracket support plate 5, the second bracket support plate 5 is limited and fixed by inserting the connecting pin 8 to complete the installation of the second bracket support plate 5.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bracket for a crane jib, comprising a fixed side plate (1), a first bracket support plate (2) fixed on one side of the fixed side plate (1), a locking plate (4) fixed on the top of the first bracket support plate (2), and a slot for a latch to be inserted is provided on the first bracket support plate (2) and the locking plate (4), wherein: The bottom of one end of the first bracket support plate (2) is connected to the second bracket support plate (5) via an axle pin, and a plurality of sliding rollers (6) are connected to the tops of the first bracket support plate (2) and the second bracket support plate (5) via an axle pin, wherein the plurality of sliding rollers (6) are evenly arranged on the tops of the first bracket support plate (2) and the second bracket support plate (5), and the sliding rollers (6) are arranged on the tops of the first bracket support plate (2) and the second bracket support plate (5) in an inclined shape, and a push-out column (9) for pushing out the latch is arranged at the bottom of the first bracket support plate (2).

2. The bracket for a crane jib according to claim 1, characterized in that: A triangular support frame (3) with a supporting function is fixed to the top and bottom of the other end of the first bracket support plate (2) by bolts, and one side of the two triangular support frames (3) is fixed to one side of the fixed side plate (1) by bolts.

3. The bracket for a crane jib according to claim 1, characterized in that: Four fixing columns (10) are fixed to the bottom of the first bracket support plate (2), and a limiting plate (12) is commonly fixed to the bottom ends of the four fixing columns (10).

4. The bracket for a crane jib according to claim 3, characterized in that: The middle of the limiting plate (12) is movably connected with a pushing column (7), and the top end of the pushing column (7) passes through the limiting plate (12) and is fixed with a first fixing plate (11), while the bottom of the first fixing plate (11) is in contact with the top of the limiting plate (12).

5. The bracket for a crane jib according to claim 4, characterized in that: The top of the first fixing plate (11) is fixed to the bottom end of the ejection column (9), and the top end of the ejection column (9) faces the slot. At the same time, a second fixing plate (13) for operation is fixed to the bottom end of the push column (7).

6. The bracket for a crane jib according to claim 5, characterized in that: A spring (14) with a reset function is sleeved on the push column (7), and the top end of the spring (14) is fixed to the bottom end of the limit plate (12), and the bottom end of the spring (14) is fixed to the top of the second fixed plate (13).

7. The bracket for a crane jib according to claim 1, characterized in that: A connection groove is provided in the middle of one end of the first bracket support plate (2), and a connection block corresponding to the connection groove is fixed in the middle of one end of the second bracket support plate (5).

8. The bracket for a crane jib according to claim 7, characterized in that: A connecting pin (8) is inserted into one end of the first bracket support plate (2), and the connecting pin (8) passes through the connecting groove and the connecting block, and the connecting block and the first bracket support plate (2) are jointly inserted into the connecting pin (8).

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