Balance beam of crane

Abstract

The utility model discloses a balance beam of a crane, which relates to the technical field of cranes, and comprises a balance beam body, two movable frames are arranged on the upper surface of the balance beam body in a sliding manner, two strip-shaped adjusting grooves are formed in the lower surfaces of the movable frames, the inner walls of the two strip-shaped adjusting grooves are rotatably connected with two-way adjusting screw rods, and the inner walls of the two-way adjusting screw rods are rotatably connected with the two-way adjusting screw rods. The surface of the bidirectional adjusting screw rod is in threaded connection with two movable blocks, and lifting hooks are fixedly installed on the lower surfaces of the movable blocks. The two movable frames are arranged on the surface of the balance beam body of the crane, the movable frames can horizontally move on the balance beam body, and the positions of the movable frames are limited and fixed through the positioning assemblies, so that the stability of the two movable frames on the surface of the balance beam is improved; and the distance between the two movable frames can be conveniently adjusted, so that the positions of the two movable frames can be independently adjusted and positioned according to the gravity center of goods, and the adjustability of the balance beam is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane technical field especially relates to a crane balance beam. BACKGROUND

[0002] The crane is the multi -action hoisting machinery of vertical promotion and horizontal handling heavy object in a certain range. The balance beam is the important component of hoisting machine and instrument, can be used for keeping the balance of the hoisted equipment, avoids the damage equipment of the sling.

[0003] The patent file with the publication number CN221396858U discloses a crane balance beam lifting appliance, including balance beam, the balance beam side wall is engraved with scale line, the sliding frame bottom side is welded with connecting seat, the connecting seat is connected with connecting ring, the connecting ring bottom side is welded with steel wire rope, the steel wire rope bottom side is welded with hook, the connecting seat drives the horizontal sliding of connecting ring, steel wire rope and hook, realizes the adjustment of the position of lifting appliance on the balance beam, can quickly move the lifting appliance to the appropriate position through the scale line engraved on the balance beam.

[0004] The crane balance beam lifting appliance in the above patent file in the actual use process, when needing the sliding frame on the balance beam surface is positioned, and then using the screw rod drives the first clamping plate and the second clamping plate from the shell of balance beam clamping and fixing, but the contact surface of clamping plate and balance beam is smooth structure, difficult to realize the positioning effect, and the stability is poor, and the sliding frame on the balance beam surface is easy to slip, influence the balance of lifting appliance. UTILITY MODEL CONTENTS

[0005] The utility model discloses a crane balance beam, in order to realize above -mentioned purpose, the utility model has adopted the following technical scheme:

[0006] A crane balance beam, including balance beam body, the upper surface of balance beam body is slidably provided with two mobile racks, the lower surface of mobile rack is provided with two strip -shaped adjusting grooves, the inner wall of two strip -shaped adjusting grooves is rotatably connected with two -way adjusting screw rod, the surface of two -way adjusting screw rod is threadedly connected with two movable blocks, and the lower surface of movable block is fixedly installed with a lifting hook.

[0007] The inside of balance beam body is provided with a rectangular mounting groove, the inside of rectangular mounting groove is provided with a positioning assembly, the positioning assembly is used for limiting the position of mobile rack, the positioning assembly includes the limit shell fixedly connected to the lower surface of mobile rack, the inner wall of limit shell is rotatably connected with a limit screw rod, the surface of limit screw rod is threadedly connected with a limit block, and the inner wall of rectangular mounting groove is fixedly connected with a plurality of positioning stoppers.

[0008] In one preferred scheme, the positioning blocks are symmetrically distributed in two groups on the inner wall of the rectangular mounting slot, and the gap between two adjacent positioning blocks on the left and right forms a size matching the size of the limiting block.

[0009] In one preferred scheme, rectangular through holes corresponding in position are formed on the front and rear surfaces of the limiting shell, the limiting block is in sliding connection with the inner wall of the rectangular through hole, the bottom end of the limiting screw rod extends to the outside of the limiting shell, and a limiting nut is fixed.

[0010] In one preferred scheme, two long strip-shaped through holes are formed on the upper and lower surfaces of the balance beam body, the through holes correspond in position to the limiting shell, and the limiting shell is in sliding connection with the inner wall of the through hole.

[0011] In one preferred scheme, the lower surface of the moving frame is fixedly connected with a support inclined rod, the front and rear surfaces of the balance beam body are fixedly connected with limiting guide rods, the limiting guide rods are slidingly sleeved with limiting blocks on the surface, and the end of the support inclined rod away from the moving frame is fixedly connected with the surface of the limiting block.

[0012] In one preferred scheme, one end of the bidirectional adjusting screw rod extends to the outside of the moving frame, and an adjusting nut is fixedly connected.

[0013] In one preferred scheme, a lifting ring fixing seat is fixedly connected to the upper surface of the balance beam body, and two lifting hooks are symmetrically distributed on the two sides of the balance beam body.

[0014] As can be seen from the above, the crane balance beam has the following technical effects.

[0015] Firstly, the two moving frames can be horizontally moved on the balance beam body by arranging two moving frames on the surface of the crane balance beam body, and the position of the moving frame is limited and fixed by the positioning assembly, thereby improving the stability of the two moving frames on the surface of the balance beam, and facilitating the adjustment of the distance between the two moving frames, and thereby the position of the two moving frames can be independently adjusted and positioned according to the center of gravity of the goods, and the adjustability of the balance beam is improved.

[0016] Secondly, the distance between the two lifting hooks can be adjusted by the bidirectional adjusting screw rod arranged in the moving frame, thereby being suitable for hoisting goods of different widths; the support inclined rod is arranged on the two sides of the bottom of the moving frame, the moving frame can be supported and limited by the support inclined rod, and the limiting block can be moved on the surface of the limiting guide rod when the moving frame moves, thereby limiting and guiding the moving frame, and further improving the stability of the moving frame on the surface of the balance beam. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is a front view structural diagram of a crane balance beam proposed in this utility model.

[0018] Figure 2 This is a side view of the crane balance beam proposed in this utility model.

[0019] Figure 3 This is a bottom view schematic diagram of the crane balance beam proposed in this utility model.

[0020] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle.

[0021] In the attached diagram: 1. Balance beam body; 2. Moving frame; 3. Strip adjustment groove; 4. Two-way adjustment screw; 5. Movable block; 6. Hook; 7. Rectangular mounting groove; 8. Positioning assembly; 9. Through hole; 10. Supporting diagonal rod; 11. Limiting guide rod; 12. Limiting slider; 13. Adjusting nut; 14. Lifting ring fixing seat;

[0022] 801. Limiting shell; 802. Limiting screw; 803. Limiting block; 804. Positioning stop; 805. Rectangular through hole; 806. Limiting nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1 and Figure 2 A crane balance beam includes a balance beam body 1, and a lifting ring fixing seat 14 is fixedly connected to the upper surface of the balance beam body 1. By setting the lifting ring fixing seat 14, the lifting rope of the crane can be connected and fixed to the lifting ring fixing seat 14.

[0025] Two movable frames 2 are slidably arranged on the upper surface of the balance beam body 1. Two strip-shaped adjustment grooves 3 are opened on the lower surface of the movable frame 2. The inner walls of the two strip-shaped adjustment grooves 3 are rotatably connected to bidirectional adjustment screws 4. One end of the bidirectional adjustment screw 4 extends to the outside of the movable frame 2 and is fixedly connected to an adjustment nut 13. By setting the adjustment nut 13, the bidirectional adjustment screw 4 can be rotated by rotating the adjustment nut 13.

[0026] The surface of the bidirectional adjusting screw 4 is threaded with two movable blocks 5. The lower surface of the movable blocks 5 is fixedly equipped with hooks 6, and the two hooks 6 are symmetrically distributed on both sides of the balance beam body 1.

[0027] It is worth noting that by setting a strip adjustment groove 3 and a bidirectional adjustment screw 4 inside the mobile frame 2, the distance between the two hooks 6 can be adjusted by using the bidirectional adjustment screw 4, thus making it suitable for lifting goods of different widths.

[0028] It should be noted that a support rod 10 is fixedly connected to the lower surface of the movable frame 2, and a limit guide rod 11 is fixedly connected to both the front and rear surfaces of the balance beam body 1. A limit slider 12 is slidably sleeved on the surface of the limit guide rod 11, and the end of the support rod 10 away from the movable frame 2 is fixedly connected to the surface of the limit slider 12.

[0029] It is worth noting that by providing support diagonal rods 10 on both sides of the bottom of the mobile frame 2, the mobile frame 2 can be reinforced and supported by the support diagonal rods 10. When the mobile frame 2 moves, the support diagonal rods 10 can drive the limiting slider 12 to move on the surface of the limiting guide rod 11, thereby limiting and guiding the mobile frame 2 and further improving the stability of the mobile frame 2 on the surface of the balance beam.

[0030] Reference Figure 3 and Figure 4 In a preferred embodiment, a rectangular mounting groove 7 is provided inside the balance beam body 1, and a positioning component 8 is provided inside the rectangular mounting groove 7. The positioning component 8 is used to limit the position of the moving frame 2. The positioning component 8 includes a limiting shell 801 fixedly connected to the lower surface of the moving frame 2. A limiting screw 802 is rotatably connected to the inner wall of the limiting shell 801. A limiting block 803 is threadedly connected to the surface of the limiting screw 802. A plurality of positioning blocks 804 are fixedly connected to the inner wall of the rectangular mounting groove 7.

[0031] It should be noted that two elongated through holes 9 are provided on the upper and lower surfaces of the balance beam body 1. The positions of the through holes 9 correspond to the limiting shell 801, and the limiting shell 801 is slidably connected to the inner wall of the through holes 9.

[0032] It should be further explained that rectangular through holes 805 with corresponding positions are opened on the front and rear surfaces of the limiting shell 801. The limiting block 803 is slidably connected to the inner wall of the rectangular through hole 805. The bottom end of the limiting screw 802 extends to the outside of the limiting shell 801 and is fixed with a limiting nut 806.

[0033] In a preferred embodiment, a plurality of positioning blocks 804 are symmetrically distributed in two groups on the inner wall of the rectangular mounting groove 7, and the gap formed between two adjacent positioning blocks 804 matches the size of the limiting block 803. It should be noted that the limiting block 803 can be inserted between two adjacent positioning blocks 804 to limit the position of the limiting shell 801. When adjusting the position of the movable frame 2, the limiting screw 802 can be used to drive the limiting block 803 to move upward, so that the limiting block 803 and the positioning block 804 are misaligned vertically, thereby allowing the limiting shell 801 to move.

[0034] It is worth noting that by setting two movable frames 2 on the upper surface of the crane balance beam body 1, during use, the two movable frames 2 can be moved horizontally on the balance beam body 1 according to the length of the lifted goods, so that the distance between the two movable frames 2 matches the goods, and the position of the movable frames 2 is limited and fixed by the positioning component 8, thereby improving the stability of the two movable frames 2 on the balance beam surface. Moreover, the position of the two movable frames 2 can be independently adjusted and positioned according to the center of gravity of the goods, improving the adjustability of the balance beam.

[0035] Working principle: In use, the distance between the two moving frames 2 can be adjusted according to the length of the goods being lifted. The moving frame 2 moves on the upper surface of the balance beam body 1, while the limiting shell 801 moves in the rectangular mounting groove 7 of the balance beam body 1. Then, the limiting nut 806 is rotated to drive the limiting screw 802 to rotate, which in turn drives the limiting block 803 to move downward, so that the limiting block 803 enters between two adjacent positioning blocks 804. The positioning blocks 804 limit the limiting block 803, thereby positioning the limiting shell 801 inside the balance beam and positioning the moving frame 2. By rotating the adjusting nut 13, the bidirectional adjusting screw 4 can be rotated, which in turn drives the two movable blocks 5 to move in the strip adjustment groove 3 of the moving frame 2, which can adjust the position of the two hooks 6, suitable for goods of different widths.

[0036] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A crane balance beam, comprising a balance beam body (1), characterized in that, Two movable frames (2) are slidably arranged on the upper surface of the balance beam body (1). Two strip-shaped adjustment grooves (3) are opened on the lower surface of the movable frame (2). Two bidirectional adjustment screws (4) are rotatably connected to the inner walls of the two strip-shaped adjustment grooves (3). Two movable blocks (5) are threadedly connected to the surface of the bidirectional adjustment screws (4). A hook (6) is fixedly installed on the lower surface of the movable blocks (5). The inside of the balance beam body (1) is provided with a rectangular mounting groove (7), and a positioning component (8) is provided inside the rectangular mounting groove (7). The positioning component (8) is used to limit the position of the moving frame (2). The positioning component (8) includes a limiting shell (801) fixedly connected to the lower surface of the moving frame (2). The inner wall of the limiting shell (801) is rotatably connected to a limiting screw (802). The surface of the limiting screw (802) is threadedly connected to a limiting block (803). The inner wall of the rectangular mounting groove (7) is fixedly connected to several positioning blocks (804).

2. A crane balance beam according to claim 1, characterized in that, Several positioning blocks (804) are divided into two groups and symmetrically distributed on the inner wall of the rectangular mounting groove (7), and the gap formed between two adjacent positioning blocks (804) matches the size of the limiting block (803).

3. A crane balance beam according to claim 1, characterized in that, The front and rear surfaces of the limiting shell (801) are provided with corresponding rectangular through holes (805). The limiting block (803) is slidably connected to the inner wall of the rectangular through hole (805). The bottom end of the limiting screw (802) extends to the outside of the limiting shell (801) and is fixed with a limiting nut (806).

4. A crane balance beam according to claim 1, characterized in that, The upper and lower surfaces of the balance beam body (1) are provided with two elongated through holes (9). The positions of the through holes (9) correspond to the limiting shell (801), and the limiting shell (801) is slidably connected to the inner wall of the through holes (9).

5. A crane balance beam according to claim 1, characterized in that, The lower surface of the movable frame (2) is fixedly connected with a support rod (10), and the front and rear surfaces of the balance beam body (1) are fixedly connected with limit guide rods (11). The surface of the limit guide rod (11) is slidably fitted with a limit slider (12), and the end of the support rod (10) away from the movable frame (2) is fixedly connected to the surface of the limit slider (12).

6. A crane balance beam according to claim 1, characterized in that, One end of the bidirectional adjusting screw (4) extends to the outside of the movable frame (2) and is fixedly connected with an adjusting nut (13).

7. A crane balance beam according to claim 1, characterized in that, The upper surface of the balance beam body (1) is fixedly connected to a lifting ring fixing seat (14), and the two lifting hooks (6) are symmetrically distributed on both sides of the balance beam body (1).

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