Cross balance beam frame of grab bucket

Abstract

The utility model relates to the technical field of balance beam frames, and discloses a grab bucket cross-shaped balance beam frame which comprises a cross-shaped support, a grab bucket is embedded in the surface of the cross-shaped support, a rotating groove, four sliding grooves and four positioning grooves are formed in the surface of the cross-shaped support, and the inner wall of the rotating groove is rotationally connected with a driving rod through a bearing. A reset assembly and a limiting assembly are arranged at one end of the driving rod, a transmission ring is arranged on the surface of the driving rod, and four transmission blocks are arranged on the surface of the transmission ring; the driving rod drives the transmission ring and the four transmission blocks to rotate, the four transmission blocks push and extrude the eight transmission rods through the transmission grooves, the eight transmission rods can pull the four insertion blocks, the four insertion blocks are made to be separated from the four fixing grooves, and therefore fixation of the four positioning blocks is relieved at the same time, four lifting lugs do not need to be disassembled in sequence when the grab bucket is replaced, and the grab bucket replacing efficiency is improved. And the dismounting efficiency of the lifting lug is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of balance beams, in particular to a grab bucket cross balance beam. Background Art

[0002] Grab bucket refers to a special tool for cranes to grab dry bulk cargo. It is composed of two or more bucket-shaped jaws that can be opened and closed to form a storage space. When loading, the jaws are closed in the material pile and the material is grabbed into the storage space. When unloading, the jaws are opened in a suspended state above the material pile and the material is scattered on the material pile. The opening and closing of the jaws are generally controlled by the steel wire rope of the crane hoisting mechanism. The balance beam frame, also known as the iron shoulder pole, can be used to maintain the balance of the grab bucket, reduce the horizontal pressure on the grab bucket during lifting, and prevent the grab bucket from being damaged by the sling.

[0003] Among them, the "grab bucket cross balance beam frame" disclosed in the application number "CN201220541223.5" is "composed of a main balance beam frame and an auxiliary balance beam frame, the main balance beam frame is a horizontal rectangular frame, the auxiliary balance beam frame is a vertical flat plate, the lower edge of the plate surface of the auxiliary balance beam frame is fixedly connected to the upper edge of the rectangular frame of the main balance beam frame in the center of the rectangular frame, and there are grab bucket connecting shaft holes on the frame plates on both sides of the rectangular frame directly below the auxiliary balance beam frame, and there are main lifting ears on the frame plates at both ends of the main balance beam frame, and auxiliary lifting ears on both ends of the plate surface of the auxiliary balance beam frame. The utility model has the characteristics of simple structure, reasonable force, small size, high efficiency, safety and reliability, etc., which reduces the labor intensity of workers, increases the grabbing amount, avoids the phenomenon of premature scrapping of wire ropes due to torque, improves operation safety, and is in a leading position in the same industry."

[0004] However, the above method still has the following defects: when replacing the grab bucket, the two main lifting ears and the two auxiliary lifting ears need to be disassembled in sequence, which is very cumbersome. Utility Model Content

[0005] The utility model aims to provide a cross-balance beam frame for a grab bucket, which can release the fixation of four lifting ears at the same time when the grab bucket is replaced, thereby improving the disassembly efficiency.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a grab bucket cross balance beam frame, including a cross bracket, a grab bucket is embedded in the surface of the cross bracket, a rotation groove, four slide grooves and four positioning grooves are respectively opened on the surface of the cross bracket, the inner wall of the rotation groove is rotatably connected with a driving rod through a bearing, a reset assembly and a limit assembly are respectively provided at one end of the driving rod, a transmission ring is provided on the surface of the driving rod, four transmission blocks are provided on the surface of the transmission ring, anti-collision grooves and two transmission grooves connected to the anti-collision grooves are opened on the surfaces of the four transmission blocks, the inner walls of the eight transmission grooves are slidably connected with transmission rods, and an insert block sliding with the slide groove is provided between every two corresponding transmission rods.

[0007] The utility model is further configured as follows: the interiors of the four positioning grooves are respectively connected to the interiors of the four sliding grooves, the inner walls of the four positioning grooves are slidably connected with positioning blocks, the surfaces of the four positioning blocks are provided with lifting ears, and the surfaces of the four positioning blocks are provided with fixed grooves that slide with the surfaces of the insertion blocks.

[0008] The utility model is further configured as follows: the other end of the driving rod passes through the inner wall of one end of the rotating groove and is placed outside the rotating groove, the other end of the driving rod is provided with a handwheel, the surface of the transmission ring is slidably connected to the inner wall of the rotating groove, a limiting hole is provided on the surface of the transmission ring, and the four transmission blocks are evenly distributed in a ring shape.

[0009] The utility model is further configured as follows: the reset component includes an annular groove, the annular groove is opened at one end of the transmission ring, the inner wall of the annular groove is slidably connected with a fixed ring, one end of the fixed ring is connected to the inner wall of the bottom end of the rotating groove, the other end of the fixed ring is opened with two arc grooves, and the inner walls of the two arc grooves are slidably connected with reset blocks.

[0010] The utility model is further configured as follows: a reset spring is provided between the two reset blocks and the corresponding arc-shaped grooves, and the top ends of the two reset blocks are connected to the inner wall of the other end of the transmission ring.

[0011] The utility model is further configured as follows: a plurality of first balls are arranged on the inner wall of the fixing ring, a plurality of second balls are arranged on the surface of the fixing ring, and the contact parts of the plurality of second balls and the plurality of first balls and the annular groove are all slidably connected.

[0012] The utility model is further configured as follows: the limit assembly includes a block, the block is arranged on the surface of the cross bracket, a guide groove is opened inside the block, a sliding plate is slidably connected to the inner wall of the guide groove, a limit spring is provided between the sliding plate and the guide groove, and a limit rod is provided at one end of the sliding plate and engaged with the limit hole.

[0013] The utility model is further configured as follows: one end of the limit rod passes through the inner wall of one end of the guide groove and is slidably connected to the surface of the transmission ring, the other end of the limit rod is provided with an auxiliary pulling plate, the back side of the auxiliary pulling plate passes through the inner wall of the other end of the guide groove and is provided with a handle, and the limit spring is sleeved on the outside of the auxiliary pulling plate.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. The utility model drives the transmission ring and four transmission blocks to rotate through the driving rod. The four transmission blocks push the eight transmission rods through the transmission grooves. The eight transmission rods pull the four plug-in blocks to cause the four plug-in blocks to disengage from the four fixing grooves, thereby releasing the fixation of the four positioning blocks at the same time. When replacing the grab bucket, there is no need to disassemble the four lifting ears in sequence, thereby improving the removal efficiency of the lifting ears;

[0016] 2. The limit rod slides along the surface of the transmission ring when the transmission ring rotates clockwise. When the insert block is out of the fixed groove, the limit rod will be aligned with the limit hole after rotation, the limit spring will extend and push the limit rod, and the limit rod will be stuck in the limit hole to complete the fixation of the transmission ring and keep the four insert blocks out of the four fixed grooves, so as to facilitate the collection of the four positioning blocks and four lifting ears in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the transmission ring of the utility model;

[0019] Figure 3 It is a schematic diagram of the top cross-sectional structure of the transmission ring of the utility model;

[0020] Figure 4 It is a schematic diagram of the top cross-sectional structure of the stopper of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the transmission block of the utility model.

[0022] In the figure: 1. cross bracket; 2. grab bucket; 3. rotating groove; 4. driving rod; 5. transmission ring; 6. reset assembly; 61. annular groove; 62. fixing ring; 63. arc groove; 64. reset block; 65. reset spring; 66. first ball; 67. second ball; 7. limit assembly; 71. block; 72. guide groove; 73. slide plate; 74. limit spring; 75. limit rod; 76. auxiliary pulling plate; 77. handle; 8. transmission block; 9. anti-collision groove; 10. transmission groove; 11. transmission rod; 12. plug block; 13. slide groove; 14. positioning groove; 15. positioning block; 16. lifting ear; 17. fixing groove; 18. limit hole. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] See also Figures 1 to 5 In the embodiment of the utility model, a grab cross balance beam frame includes a cross bracket 1, a grab 2 is embedded on the surface of the cross bracket 1, a rotation groove 3, four slide grooves 13 and four positioning grooves 14 are respectively opened on the surface of the cross bracket 1, the inner wall of the rotation groove 3 is rotatably connected with a driving rod 4 through a bearing, one end of the driving rod 4 is respectively provided with a reset component 6 and a limit component 7, a transmission ring 5 is fixedly provided on the surface of the driving rod 4, and four transmission blocks 8 are fixedly provided on the surface of the transmission ring 5, and the surfaces of the four transmission blocks 8 are all provided with anti-collision grooves 9 and two transmission grooves 10 connected with the anti-collision grooves 9, and the inner walls of the eight transmission grooves 10 are all slidably connected with transmission rods 11, and an insert block 12 sliding with the slide groove 13 is fixedly provided between every two corresponding transmission rods 11, and the driving rod 4 is rotated, and the driving rod 4 will drive the transmission ring 5 to rotate a certain angle, and the transmission ring 5 will drive the four transmission blocks 8 to rotate, and the four transmission blocks 8 push the eight transmission rods 11 and the four insert blocks 12 through the transmission grooves 10, so that the four insert blocks 12 are separated from the four fixed grooves 17.

[0025] The interiors of the four positioning grooves 14 are respectively connected to the interiors of the four slide grooves 13, and the inner walls of the four positioning grooves 14 are slidably connected with positioning blocks 15. The surfaces of the four positioning blocks 15 are fixed with lifting ears 16. The surfaces of the four positioning blocks 15 are provided with fixing grooves 17 that slide with the surface of the plug block 12. The positioning blocks 15 are slid into the positioning grooves 14 until the positioning blocks 15 are supported by the inner walls of the slide grooves 13, and the plug block 12 passes through the fixing grooves 17, thereby completing the fixation of the positioning blocks 15 and realizing the installation of the lifting ears 16.

[0026] The other end of the driving rod 4 passes through the inner wall of one end of the rotating groove 3 and is placed outside the rotating groove 3. A handwheel is fixedly provided at the other end of the driving rod 4. The surface of the transmission ring 5 is slidably connected to the inner wall of the rotating groove 3. A limiting hole 18 is provided on the surface of the transmission ring 5. The four transmission blocks 8 are evenly distributed in a ring shape. The handwheel can increase the torque for rotating the driving rod 4, making it easier to rotate the driving rod 4.

[0027] The reset assembly 6 includes an annular groove 61, which is provided at one end of the transmission ring 5. A fixed ring 62 is slidably connected to the inner wall of the annular groove 61. One end of the fixed ring 62 is fixedly connected to the inner wall of the bottom end of the rotating groove 3. Two arc grooves 63 are provided at the other end of the fixed ring 62. The inner walls of the two arc grooves 63 are both slidably connected to reset blocks 64, which will slide along the inner walls of the arc grooves 63.

[0028] A reset spring 65 is fixedly provided between the two reset blocks 64 and the corresponding arc grooves 63. The top ends of the two reset blocks 64 are fixedly connected to the inner wall of the other end of the transmission ring 5. The reset blocks 64 slide when the transmission ring 5 rotates, and the reset blocks 64 compress the reset spring 65 when sliding.

[0029] A plurality of first balls 66 are arranged on the inner wall of the fixing ring 62, and a plurality of second balls 67 are arranged on the surface of the fixing ring 62. The contact parts of the plurality of second balls 67 and the plurality of first balls 66 with the annular groove 61 are all slidably connected. The second balls 67 and the first balls 66 convert part of the sliding friction into rolling friction, thereby reducing the useless work when the driving rod 4 is rotated.

[0030] The limiting assembly 7 includes a stopper 71, which is fixedly arranged on the surface of the cross bracket 1. A guide groove 72 is opened inside the stopper 71. A sliding plate 73 is slidably connected to the inner wall of the guide groove 72. A limiting spring 74 is fixedly arranged between the sliding plate 73 and the guide groove 72. A limiting rod 75 engaged with the limiting hole 18 is fixedly arranged at one end of the sliding plate 73. The limiting spring 74 extends and pushes the limiting rod 75, and the limiting rod 75 is engaged with the limiting hole 18 to complete the fixation of the transmission ring 5.

[0031] One end of the limiting rod 75 passes through the inner wall of one end of the guide groove 72 and is slidably connected to the surface of the transmission ring 5. The other end of the limiting rod 75 is fixedly provided with an auxiliary pulling plate 76. The back side of the auxiliary pulling plate 76 passes through the inner wall of the other end of the guide groove 72 and is fixedly provided with a handle 77. The limiting spring 74 is sleeved on the outside of the auxiliary pulling plate 76. The auxiliary pulling plate 76 is pulled by the handle 77, and the auxiliary pulling plate 76 drives the sliding plate 73 and the limiting rod 75 to move, prompting the limiting rod 75 to disengage from the limiting hole 18.

[0032] When in use, the driving rod 4 is rotated clockwise through the hand wheel, and the driving rod 4 drives the transmission ring 5 to rotate, and the transmission ring 5 drives the four transmission blocks 8 to rotate. The four transmission blocks 8 will rotate at a certain angle, and the four transmission blocks 8 will push the eight transmission rods 11 through the transmission grooves 10. The eight transmission rods 11 will pull the four plug blocks 12, causing the four plug blocks 12 to disengage from the four fixing grooves 17, thereby releasing the fixation of the four positioning blocks 15 at the same time. When replacing the grab bucket 2, there is no need to disassemble the four lifting ears 16 in sequence, which improves the disassembly efficiency of the lifting ears 16;

[0033] When the transmission ring 5 rotates clockwise, the limiting rod 75 slides along the surface of the transmission ring 5. When the insert block 12 is separated from the fixing groove 17, the limiting rod 75 will be aligned with the rotating limiting hole 18, and the limiting spring 74 will extend and push the limiting rod 75, and the limiting rod 75 will be stuck in the limiting hole 18, completing the fixing of the transmission ring 5, keeping the four insert blocks 12 separated from the four fixing grooves 17, so as to facilitate the sequential collection of the four positioning blocks 15 and the four lifting ears 16;

[0034] When the transmission ring 5 rotates clockwise, it drives the two reset blocks 64 to rotate, and the reset block 64 compresses the reset spring 65. Therefore, after the limit rod 75 is inserted into the limit hole 18, the reset spring 65 is in a compressed state. When the lifting ear 16 needs to be installed, first slide the positioning block 15 along the positioning groove 14, and the positioning block 15 is supported by the sliding groove 13. Then, the auxiliary pulling plate 76 is pulled by the handle 77. The auxiliary pulling plate 76 drives the sliding plate 73 and the limit rod 75 to move, causing the limit rod 75 to disengage from the limit hole 18, so that the transmission ring 5 loses the limit of the limit rod 75. At this time, the reset spring 65 will stretch and push the reset block 64 and the transmission ring 5 to move, causing the four plug blocks 12 to be inserted into the four fixing grooves 17, completing the fixation of the four positioning blocks 15, improving the installation efficiency of the lifting ear 16, which is very convenient.

[0035] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A grab bucket cross balance beam frame, comprising a cross bracket (1), characterized in that: A grab bucket (2) is embedded in the surface of the cross bracket (1), and a rotation groove (3), four slide grooves (13) and four positioning grooves (14) are respectively opened on the surface of the cross bracket (1). The inner wall of the rotation groove (3) is rotatably connected to a driving rod (4) through a bearing, and one end of the driving rod (4) is respectively provided with a reset component (6) and a limit component (7). A transmission ring (5) is provided on the surface of the driving rod (4), and four transmission blocks (8) are provided on the surface of the transmission ring (5). Anti-collision grooves (9) and two transmission grooves (10) connected to the anti-collision grooves (9) are opened on the surfaces of the four transmission blocks (8). The inner walls of the eight transmission grooves (10) are slidably connected to transmission rods (11), and an insert block (12) sliding with the slide groove (13) is provided between every two corresponding transmission rods (11).

2. The cross balance beam frame of a grab bucket according to claim 1, characterized in that: The interiors of the four positioning grooves (14) are respectively connected to the interiors of the four sliding grooves (13); the inner walls of the four positioning grooves (14) are slidably connected with positioning blocks (15); the surfaces of the four positioning blocks (15) are provided with lifting ears (16); and the surfaces of the four positioning blocks (15) are provided with fixing grooves (17) that slide with the surface of the insert block (12).

3. The cross balance beam frame of a grab bucket according to claim 1, characterized in that: The other end of the driving rod (4) passes through the inner wall of one end of the rotating groove (3) and is placed outside the rotating groove (3). The other end of the driving rod (4) is provided with a hand wheel. The surface of the transmission ring (5) is slidably connected to the inner wall of the rotating groove (3). The surface of the transmission ring (5) is provided with a limiting hole (18). The four transmission blocks (8) are evenly distributed in a ring shape.

4. The cross balance beam frame of a grab bucket according to claim 1, characterized in that: The reset assembly (6) comprises an annular groove (61), the annular groove (61) being provided at one end of the transmission ring (5), the inner wall of the annular groove (61) being slidably connected to a fixed ring (62), one end of the fixed ring (62) being connected to the inner wall of the bottom end of the rotating groove (3), the other end of the fixed ring (62) being provided with two arc grooves (63), the inner walls of the two arc grooves (63) being slidably connected to reset blocks (64).

5. The cross balance beam frame of a grab bucket according to claim 4, characterized in that: A return spring (65) is provided between the two return blocks (64) and the corresponding arc groove (63), and the top ends of the two return blocks (64) are connected to the inner wall of the other end of the transmission ring (5).

6. The cross balance beam frame of a grab bucket according to claim 4, characterized in that: The inner wall of the fixing ring (62) is provided with a plurality of first rolling balls (66), the surface of the fixing ring (62) is provided with a plurality of second rolling balls (67), and the contact parts of the plurality of second rolling balls (67) and the plurality of first rolling balls (66) and the annular groove (61) are all slidably connected.

7. The cross balance beam frame of a grab bucket according to claim 3, characterized in that: The limit assembly (7) comprises a stopper (71), the stopper (71) being arranged on the surface of the cross bracket (1), a guide groove (72) being provided inside the stopper (71), a sliding plate (73) being slidably connected to the inner wall of the guide groove (72), a limit spring (74) being provided between the sliding plate (73) and the guide groove (72), and a limit rod (75) being engaged with the limit hole (18) being provided at one end of the sliding plate (73).

8. The cross balance beam frame of a grab bucket according to claim 7, characterized in that: One end of the limiting rod (75) passes through the inner wall of one end of the guide groove (72) and is slidably connected to the surface of the transmission ring (5); the other end of the limiting rod (75) is provided with an auxiliary pulling plate (76); the back side of the auxiliary pulling plate (76) passes through the inner wall of the other end of the guide groove (72) and is provided with a handle (77); and the limiting spring (74) is sleeved on the outside of the auxiliary pulling plate (76).

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