Power-assisted arm of balance crane

Abstract

The utility model discloses a balance crane boosting arm, which relates to the technical field of general precision machinery and comprises a rear support arm, a movable arm is slidably arranged in the rear support arm, a fixed block is arranged at one end of the movable arm, a support column is rotatably arranged in the fixed block, a fixed cylinder is arranged at one end of the support column, and a rotating rod is rotatably arranged in the fixed cylinder through a mounting plate. A worm gear and a front supporting arm are arranged in the middle and at the bottom of the rotating rod respectively, a worm used for being in meshed connection with the worm gear is arranged in the fixing cylinder through a motor, and a moving assembly used for adjusting the moving arm is arranged at the top of the rear supporting arm. The assisting arm has the advantages that the limiting effect can be achieved when the angle of the front supporting arm is adjusted, the situation that rotation is not stable in the hoisting process of a heavy object is avoided, workers can hoist the heavy object conveniently, the size of the assisting arm can be adjusted conveniently according to needs, the assisting arm can be used conveniently according to the actual situation, and the practicability of the assisting arm is improved. And the application range is greatly expanded.

Description

Technical Field

[0001] The utility model relates to a power-assisting arm, in particular to a balancing crane power-assisting arm, and belongs to the technical field of general precision machinery. Background Art

[0002] Balance cranes are mainly used for lifting workpieces in workshops or moving objects in local spaces. They are flexible, lightweight and low-cost. There are many types of small balance cranes, pneumatic cranes, mechanical cranes, chain cranes, winch cranes, etc. on the market. The use of balance crane power arms provides convenience for assisting in lifting some heavy objects.

[0003] Among them, the "joint power-assisting arm with an adjustment mechanism" disclosed in the application number "CN202322134148.1" "comprises a base, a supporting pile is provided at the upper end of the base, an adjustable U-shaped seat is provided on the supporting pile, a rear force arm is fixedly connected to the side wall of the U-shaped seat away from the supporting pile, a rectangular through groove connected front and back is provided on the rear force arm, a driving component is penetrated on the left top surface of the rectangular through groove, an adjusting mechanism is penetrated on the right inner wall of the rectangular through groove, the driving component is transmission-connected with the adjusting mechanism, and an adjustable front force arm is provided at one end of the adjusting mechanism located outside the rectangular through groove". In the utility model, the rotating shaft between the two fixed blocks cooperates with the rotating block to facilitate the adjustment of the angle of the front force arm, thereby improving the use effect of the front force arm.

[0004] However, the above method still has the following defects: the rotating shaft and the rotating block are movable, and unstable rotation is likely to occur during the lifting of the heavy object, which is inconvenient for the staff to lift the heavy object. Summary of the invention

[0005] The purpose of the utility model is to provide a balancing crane assisting arm to solve the problem that the rotating shaft and the rotating block provided in the above-mentioned background technology are movable, which easily causes unstable rotation during the lifting of heavy objects, making it inconvenient for workers to lift heavy objects.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a balancing crane assist arm, comprising a rear support arm, a movable arm is slidably provided inside the rear support arm, a fixed block is provided at one end of the movable arm, a pillar is rotatably provided inside the fixed block, a fixed cylinder is provided at one end of the pillar, a rotating rod is rotatably provided inside the fixed cylinder through a mounting plate, a worm gear and a front support arm are respectively provided at the middle and bottom of the rotating rod, a worm for meshing connection with the worm gear is provided inside the fixed cylinder through a motor, a movable assembly for adjusting the movable arm is provided at the top of the rear support arm, and an adjusting assembly for rotating the pillar is provided at the top of the fixed block.

[0007] As a preferred technical solution of the utility model, a limiting ring is provided at the top of the rotating rod, the bottom of the limiting ring is slidably connected to the top of the mounting plate, and reinforcement plates are provided at the top and bottom of the mounting plate, and one side of the reinforcement plate is fixedly connected to the inner wall of the fixed cylinder.

[0008] As a preferred technical solution of the utility model, a connecting plate is provided at one end of the front supporting arm, and mounting holes are provided at four corners of the surface of the connecting plate.

[0009] As a preferred technical solution of the utility model, the moving component includes an electric push rod, which is fixedly installed on the top of the rear support arm. The telescopic rod of the electric push rod is provided with a push block, the bottom end of the push block is fixedly connected to the top of the moving arm, guide plates are provided on both sides of the moving arm, and the inner wall of the rear support arm is provided with a guide groove matching the guide plate.

[0010] As a preferred technical solution of the utility model, a U-shaped plate is provided on the surface of the rear support arm, and a through hole is opened on the surface of the U-shaped plate.

[0011] As a preferred technical solution of the utility model, the adjustment assembly includes an electric telescopic column, which is fixedly installed on the top of the fixed block. The telescopic rod of the electric telescopic column passes through the fixed block and is fixedly connected to the rack plate arranged at the bottom of the fixed block. A gear is provided on the surface of the column, and the rack plate is meshed with the gear.

[0012] As a preferred technical solution of the utility model, support blocks are provided on both sides of the rack plate, guide rods are slidably provided inside the support blocks, and the top ends of the guide rods are fixedly connected to the inner walls of the fixed blocks.

[0013] As a preferred technical solution of the utility model, two bosses are rotatably provided on the surface of the rear support arm, and a flange is provided at one end of the bosses.

[0014] Compared with the related art, the balancing crane booster arm provided by the utility model has the following beneficial effects:

[0015] 1. By controlling the rotation of the worm by a motor and cooperating with the meshing worm wheel, the rotating rod can be rotated inside the mounting plate, thereby driving the front support arm arranged at the bottom of the rotating rod to adjust the angle. At the same time, since the worm wheel and the worm have the self-locking function, they can play a limiting role when adjusting the angle of the front support arm, avoiding unstable rotation during the lifting of heavy objects, which is convenient for the staff to lift the heavy objects; at the same time, through the set moving component, by controlling the extension and retraction of the telescopic rod of the electric push rod, the moving arm is driven to move, which is convenient for adjusting the size of the power arm according to needs, and it is convenient to use it according to actual conditions, and the scope of use is greatly improved.

[0016] 2. Through the setting adjustment component, by controlling the extension and retraction of the electric push rod, the rack plate drives the gear to rotate, so that the pillar and the front support arm can be fine-tuned, which is convenient for the sling fixed at the bottom to lift the heavy objects at multiple angles and make better use of the power arm. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the exploded structure of the rear support arm of the utility model;

[0019] Figure 3 This is a schematic diagram of the explosion structure of the fixed cylinder of the utility model;

[0020] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the fixed block of the utility model;

[0022] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at B.

[0023] In the figure: 1. rear support arm; 2. moving arm; 3. fixed block; 4. pillar; 5. fixed cylinder; 6. rotating rod; 7. worm gear; 8. moving assembly; 801. electric push rod; 802. push block; 803. guide plate; 804. guide groove; 805. U-shaped plate; 806. through hole; 807. boss; 808. flange; 9. adjustment assembly; 901. electric telescopic column; 902. rack plate; 903. support block; 904. guide rod; 905. gear; 10. front support arm; 11. motor; 12. worm; 13. limit ring; 14. reinforcement plate; 15. connecting plate; 16. mounting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1:

[0025] See also Figure 1-6The utility model provides a balancing crane power-assisting arm, including a rear support arm 1, a movable arm 2 is slidably provided inside the rear support arm 1, and the distance between the movable arm 2 and the rear support arm 1 is adjusted by moving the movable arm 2, so that the size of the power-assisting arm can be adjusted according to the needs, and it is convenient to use it according to the actual situation, and the scope of use is greatly improved. A fixed block 3 is provided at one end of the movable arm 2, and a pillar 4 is rotatably provided inside the fixed block 3. A fixed cylinder 5 is provided at one end of the pillar 4, and a rotating rod 6 is rotatably provided inside the fixed cylinder 5 through a mounting plate 16. A worm gear 7 and a front support arm 10 are respectively provided at the middle and bottom of the rotating rod 6. A worm 12 for meshing connection with the worm gear 7 is provided inside the fixed cylinder 5 through a motor 11. By setting the motor 11 The worm 12 is driven to rotate, so that the angle of the rotating rod 6 and the front support arm 10 arranged at the bottom of the rotating rod 6 can be adjusted. At the same time, the worm wheel 7 and the worm 12 have a self-locking function, so that the front support arm 10 can be limited when the angle is adjusted, avoiding the unstable rotation during the lifting of heavy objects, which is convenient for the staff to lift the heavy objects. The top of the rear support arm 1 is provided with a moving component 8 for adjusting the moving arm 2, which is convenient for adjusting the distance of the moving arm 2 at the rear support arm 1, thereby improving the use range of the power-assisting arm. The top of the fixed block 3 is provided with an adjusting component 9 for rotating the pillar 4, which is convenient for fine-tuning the front support arm 10, facilitating the lifting of the heavy objects at multiple angles by the sling fixed at the bottom, and making better use of the power-assisting arm.

[0026] A limiting ring 13 is provided at the top of the rotating rod 6, and the bottom of the limiting ring 13 is slidably connected to the top of the mounting plate 16, so as to facilitate the limiting sliding of the rotating rod 6. A reinforcing plate 14 is provided at the top and bottom of the mounting plate 16, and one side of the reinforcing plate 14 is fixedly connected to the inner wall of the fixing tube 5, so as to facilitate improving the stability between the mounting plate 16 and the fixing tube 5;

[0027] The moving assembly 8 includes an electric push rod 801, which is fixedly mounted on the top of the rear support arm 1. The telescopic rod of the electric push rod 801 is provided with a push block 802. The electric push rod 801 is used to push the push block 802 to move, thereby driving the moving arm 2 to move, thereby improving the use range. The bottom end of the push block 802 is fixedly connected to the top of the moving arm 2. Guide plates 803 are provided on both sides of the moving arm 2. The inner wall of the rear support arm 1 is provided with a guide groove 804 matching the guide plate 803, which is used for the movement of the moving arm 2 to play a role of limiting and guiding, thereby improving the stability of the moving arm 2 when moving;

[0028] A U-shaped plate 805 is provided on the surface of the rear support arm 1, and a through hole 806 is opened on the surface of the U-shaped plate 805 to facilitate the installation and use of other force arms;

[0029] Two bosses 807 are rotatably provided on the surface of the rear support arm 1, and a flange 808 is provided at one end of the boss 807 to facilitate installation and use of other reinforcement arms at the balance crane and subsequent installation. Embodiment 2:

[0030] The adjustment component 9 includes an electric telescopic column 901, which is fixedly installed on the top of the fixed block 3. The telescopic rod of the electric telescopic column 901 passes through the fixed block 3 and is fixedly connected to the rack plate 902 arranged at the bottom of the fixed block 3. A gear 905 is provided on the surface of the pillar 4, and the rack plate 902 is meshed with the gear 905. The electric telescopic column 901 drives the rack plate 902 to move, and cooperates with the gear 905 to drive the pillar 4 to rotate and fine-tune, so that the front support arm 10 can be fine-tuned, which is convenient for the sling fixed at the bottom to lift heavy objects at multiple angles and make better use of the power-assisting arm.

[0031] Support blocks 903 are provided on both sides of the rack plate 902. A guide rod 904 is slidably provided inside the support block 903. The top of the guide rod 904 is fixedly connected to the inner wall of the fixed block 3, and serves as a limit guide for the movement of the rack plate 902.

[0032] A connecting plate 15 is provided at one end of the front support arm 10, and mounting holes are provided at four corners of the surface of the connecting plate 15. The connecting plate 15 and the mounting holes are provided to facilitate installation and fixation of the sling.

[0033] When in use, first, place the power-assisting arm at the work site, then connect and install the power-assisting arm to the balance crane by matching the mounting hole, through hole 806 and flange 808, and drive the push block 802 to move by controlling the electric push rod 801, thereby driving the movable arm 2 to move in the horizontal direction, so as to facilitate the adjustment of the length of the power-assisting arm according to actual conditions and the use of the power-assisting arm. When the angle of the front support arm 10 needs to be adjusted, the motor 11 is controlled to work, and the worm 12 is driven to rotate, matching the meshing worm wheel 7, thereby driving the worm wheel 7, the rotating rod 6 and the front support arm 10 to adjust the angle, so that the staff can adjust the angle of the front support arm 10 during lifting. The worm 12 and worm wheel 7 have the function of self-locking, so that the heavy object can be kept fixed in the process of lifting the heavy object, avoiding the unstable rotation in the process of lifting the heavy object, which is convenient for the staff to lift the heavy object, and the lifting device arranged at the bottom of the connecting plate 15 can be used to lift the workpiece; through the adjustment component 9, the electric telescopic column 901 can be controlled to drive the rack plate 902 to move, thereby driving the gear 905 and the support 4 to fine-tune the rotation, and the front support arm 10 can be fine-tuned, which is convenient for fine-tuning the front support arm 10, and the lifting device fixed at the bottom is convenient for lifting the heavy object at multiple angles, so as to make better use of the power-assisting arm.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A balancing crane booster arm, comprising a rear support arm (1), characterized in that: A movable arm (2) is slidably provided inside the rear support arm (1), a fixed block (3) is provided at one end of the movable arm (2), a support (4) is rotatably provided inside the fixed block (3), a fixed cylinder (5) is provided at one end of the support (4), a rotating rod (6) is rotatably provided inside the fixed cylinder (5) through a mounting plate (16), a worm gear (7) and a front support arm (10) are provided at the middle and bottom of the rotating rod (6), respectively, a worm (12) for meshing connection with the worm gear (7) is provided inside the fixed cylinder (5) through a motor (11), a movable component (8) for adjusting the movable arm (2) is provided at the top of the rear support arm (1), and an adjusting component (9) for rotating the support (4) is provided at the top of the fixed block (3).

2. The balance crane booster arm according to claim 1, characterized in that: A limiting ring (13) is provided at the top of the rotating rod (6), and the bottom of the limiting ring (13) is slidably connected to the top of the mounting plate (16). A reinforcing plate (14) is provided at the top and bottom of the mounting plate (16), and one side of the reinforcing plate (14) is fixedly connected to the inner wall of the fixing cylinder (5).

3. The balance crane booster arm according to claim 1, characterized in that: A connecting plate (15) is provided at one end of the front supporting arm (10), and mounting holes are provided at four corners of the surface of the connecting plate (15).

4. The balance crane booster arm according to claim 1, characterized in that: The moving assembly (8) comprises an electric push rod (801), wherein the electric push rod (801) is fixedly mounted on the top of the rear support arm (1), a telescopic rod of the electric push rod (801) is provided with a push block (802), the bottom end of the push block (802) is fixedly connected to the top of the moving arm (2), guide plates (803) are provided on both sides of the moving arm (2), and a guide groove (804) matching the guide plate (803) is provided on the inner wall of the rear support arm (1).

5. The balance crane booster arm according to claim 1, characterized in that: A U-shaped plate (805) is provided on the surface of the rear support arm (1), and a through hole (806) is opened on the surface of the U-shaped plate (805).

6. The balance crane booster arm according to claim 1, characterized in that: The adjustment assembly (9) comprises an electric telescopic column (901), the electric telescopic column (901) being fixedly mounted on the top of a fixed block (3), a telescopic rod of the electric telescopic column (901) passing through the fixed block (3) and being fixedly connected to a rack plate (902) provided at the bottom of the fixed block (3), a gear (905) being provided on the surface of the support column (4), and the rack plate (902) being meshingly connected to the gear (905).

7. The balance crane booster arm according to claim 6, characterized in that: Support blocks (903) are provided on both sides of the rack plate (902), and guide rods (904) are slidably provided inside the support blocks (903), and the top ends of the guide rods (904) are fixedly connected to the inner wall of the fixed block (3).

8. The balance crane booster arm according to claim 1, characterized in that: Two bosses (807) are rotatably provided on the surface of the rear support arm (1), and a flange (808) is provided at one end of the boss (807).

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