Sectional type bucket opening crank handle of 4M3 electric shovel

Abstract

The utility model relates to the technical field of bucket opening crutch handles, in particular to a sectional type bucket opening crutch handle of a 4M3 electric shovel, which comprises an upper crutch handle section and a lower crutch handle section, and one ends of the upper crutch handle section and the lower crutch handle section close to each other are respectively connected with an upper bearing box and a lower bearing box; by arranging the sectional type crutch handle of the upper section crutch handle and the lower section crutch handle and penetrating the steel rope into the hoof-shaped ring, the problem that the crutch handle and the steel rope are prone to being worn through by the steel rope due to frequent friction is solved, the fixing nuts are installed on the upper section crutch handle and the lower section crutch handle, and the cotter pins are inserted into the limiting holes, so that the stability of the fixing nuts can be improved, and the service life of the crutch handle is prolonged. The upper-section crank handle and the lower-section crank handle can rotate relative to the upper bearing box and the lower bearing box respectively, so that the steel rope is not prone to twist, the service life of the steel rope is prolonged, the upper bearing box and the lower bearing box are connected through the connecting bolts, the overall weight can be increased, and the service life of the steel rope is prolonged. And the bucket opening effect is prevented from being easily influenced by the lighter turning handle.

Description

Technical Field

[0001] The utility model relates to the technical field of bucket opening handles, in particular to a 4M3 electric shovel segmented bucket opening handle. Background Art

[0002] The 4M3 electric shovel is an excavation equipment widely used in domestic open-pit mines. The bucket opening handle is used when the electric shovel opens the bucket. The bucket opening handle is generally an integral straight-shaped handle made of ordinary steel.

[0003] In the prior art, one end of a bucket opening steel rope is passed through and tied into a hole in a crook handle, and the other end is wound around a drum of a bucket opening motor. The large crook handle is lifted upward by the steel rope of the bucket opening motor, and the small crook handle rotating coaxially therewith is lifted simultaneously, so that the bucket latch is separated from the latch library, and the bucket opening operation is realized. However, during the bucket opening operation, the crook handle and the steel rope frequently rub against each other, and the steel rope is easily worn through. The steel rope is also easily twisted, which reduces the service life of the steel rope. In addition, the relatively light crook handle itself can easily affect the bucket opening effect. Utility Model Content

[0004] The utility model aims to provide a 4M3 electric shovel segmented bucket handle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 4M3 electric shovel segmented bucket handle, comprising: an upper handle and a lower handle, the ends of the upper handle and the lower handle close to each other are respectively connected to an upper bearing box and a lower bearing box, the outer walls of the ends of the upper bearing box and the lower bearing box close to each other are both equipped with connecting plates, and connecting bolts are installed between the two connecting plates;

[0006] One end of the upper and lower crank handles are both provided with a rotating bearing, and the other end of the lower crank handle is fixedly provided with a shoe-shaped ring, the interior of the shoe-shaped ring is connected with a steel rope;

[0007] A fixing nut is installed on the outer wall of the end of the upper handle and the lower handle close to each other, and a limiting hole is provided on the outer wall of the end of the upper handle and the lower handle close to the fixing nut, and a cotter pin is installed inside the two limiting holes.

[0008] Preferably, the two connecting plates are fixedly mounted on the outer walls of the upper bearing box and the lower bearing box respectively, four connecting bolts are symmetrically arranged, connecting holes are opened on the surfaces of the two connecting plates close to the connecting bolts, and the two connecting plates are tightly connected by the connecting bolts.

[0009] Preferably, the side walls of the four connecting bolts close to one end of the upper bearing box are provided with positioning grooves, the interiors of the four positioning grooves are slidably connected with positioning rods, and the outer walls of the upper bearing box close to the four positioning rods are correspondingly provided with telescopic grooves.

[0010] Preferably, one end of the four positioning rods are slidably inserted into adjacent telescopic slots and fixedly connected with springs, one end of the four springs are fixedly installed on the inner wall of the telescopic slot, and limiting blocks are fixedly installed on the outer wall of one end of the four positioning rods close to the springs, and corresponding limiting slots are opened on the inner walls of the four telescopic slots close to the adjacent limiting blocks.

[0011] Preferably, the upper bearing box and the lower bearing box are each provided with a plug-in hole at one end away from each other, and the upper and lower handles and the lower handles are each slid through the adjacent plug-in holes and inserted into the upper bearing box and the lower bearing box at one end close to each other, and the two rotating bearings are respectively fixedly mounted on the inner walls of the upper bearing box and the lower bearing box at one end close to the adjacent plug-in holes.

[0012] Preferably, fixing threads are provided on the outer walls of the ends of the upper and lower handles that are close to each other, and two fixing nuts are respectively threadedly mounted on the upper and lower handles through the fixing threads.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model solves the problem that the handle and the steel rope are easily worn out by frequent friction between them by setting a segmented handle of an upper handle and a lower handle and passing the steel rope through a horseshoe-shaped ring. By installing fixing nuts on the upper handle and the lower handle and inserting the cotter pin into the limiting hole, the stability of the fixing nuts can be improved, so that the upper handle and the lower handle can be relatively rotated with the upper bearing box and the lower bearing box respectively, thereby making it difficult for the steel rope to be twisted, which is beneficial to increasing the service life of the steel rope. By connecting the upper bearing box and the lower bearing box by connecting bolts, the overall weight can be increased to prevent the opening effect from being easily affected by the lightness of the handle itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the local structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 4 For this utility model Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0019] Figure 5 For this utility model Figure 4 Enlarged schematic diagram of the structure at point C in the middle.

[0020] In the figure: 1. upper handle; 2. lower handle; 3. fixing thread; 4. fixing nut; 5. limiting hole; 6. rotating bearing; 7. upper bearing box; 8. lower bearing box; 9. connecting plate; 10. connecting hole; 11. connecting bolt; 12. horseshoe ring; 13. steel rope; 14. plug-in hole; 15. cotter pin; 16. positioning groove; 17. positioning rod; 18. spring; 19. limiting block; 20. limiting groove; 21. telescopic groove. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.

[0022] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", and "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0025] See also Figures 1 to 5 The utility model provides a technical solution: a 4M3 electric shovel segmented bucket handle, comprising: an upper handle 1 and a lower handle 2, the ends of the upper handle 1 and the lower handle 2 close to each other are respectively connected to an upper bearing box 7 and a lower bearing box 8, connecting plates 9 are installed on the outer walls of the ends of the upper bearing box 7 and the lower bearing box 8 close to each other, and connecting bolts 11 are installed between the two connecting plates 9; the two connecting plates 9 are respectively fixedly installed on the outer walls of the upper bearing box 7 and the lower bearing box 8, four connecting bolts 11 are symmetrically arranged, and connecting holes 10 are opened on the surfaces of the two connecting plates 9 close to the connecting bolts 11, and the two connecting plates 9 are tightly connected by the connecting bolts 11, which is convenient for connecting the upper bearing box 7 and the lower bearing box 8. The four connecting bolts 11 are provided with positioning grooves 16 on the side walls near the upper bearing box 7, and positioning rods 17 are slidably connected inside the four positioning grooves 16. The upper bearing box 7 is provided with corresponding telescopic grooves 21 on the outer wall near the four positioning rods 17, so as to limit the connecting bolts 11 through the positioning rods 17, so as to prevent the connecting bolts 11 from rotating and affecting the connection stability between the upper bearing box 7 and the lower bearing box 8. One end of the four positioning rods 17 is slidably inserted into the adjacent telescopic grooves 21 and fixedly connected with springs 18, one end of the four springs 18 is fixedly installed on the inner wall of the telescopic grooves 21, and the four positioning rods 17 are fixedly installed on the outer wall of the end near the springs 18. The four telescopic grooves 21 are provided with corresponding limiting grooves 20 on the inner wall near the adjacent limiting blocks 19, so that the positioning rods 17 can slide smoothly in the telescopic grooves 21 under the elastic action of the springs 18, thereby limiting the connecting bolts 11.

[0026] A rotating bearing 6 is installed at one end of the upper turning handle 1 and the lower turning handle 2, and a shoe-shaped ring 12 is fixedly installed at the other end of the lower turning handle 2, and a steel rope 13 is connected to the inside of the shoe-shaped ring 12; the ends of the upper bearing box 7 and the lower bearing box 8 that are away from each other are provided with plug-in holes 14, and the ends of the upper turning handle 1 and the lower turning handle 2 that are close to each other are slid through the adjacent plug-in holes 14 and inserted into the upper bearing box 7 and the lower bearing box 8, and the two rotating bearings 6 are respectively fixedly installed on the inner walls of the upper bearing box 7 and the lower bearing box 8 at one end close to the adjacent plug-in holes 14, which is convenient.

[0027] A fixing nut 4 is installed on the outer wall of the end of the upper handle 1 and the lower handle 2 close to each other, and a limit hole 5 is provided on the outer wall of the end of the upper handle 1 and the lower handle 2 close to the fixing nut 4, and a split pin 15 is installed inside the two limit holes 5. A fixing thread 3 is provided on the outer wall of the end of the upper handle 1 and the lower handle 2 close to each other, and two fixing nuts 4 are respectively threadedly installed on the upper handle 1 and the lower handle 2 through the fixing thread 3, so that the upper handle 1 and the lower handle 2 can rotate relative to the upper bearing box 7 and the lower bearing box 8 respectively.

[0028] When the device is working, by setting the segmented crankshaft of the upper crankshaft 1 and the lower crankshaft 2, and passing the steel rope 13 through the hoof-shaped ring 12, the steel rope 13 can be fixed by its own pressure, which is convenient for replacing the steel rope 13 and solves the problem that the crankshaft and the steel rope 13 are frequently rubbed and easily worn out by the steel rope 13. By installing the fixing nut 4 on the upper crankshaft 1 and the lower crankshaft 2 and inserting the cotter pin 15 into the limiting hole 5, the stability of the fixing nut 4 can be improved to prevent the fixing nut 4 from being separated from the upper crankshaft 1 and the lower crankshaft 2 during operation, so that the upper crankshaft 1 and the lower crankshaft 2 can be relatively rotated with the upper bearing box 7 and the lower bearing box 8 respectively through the action of the rotating bearing 6, so that the steel rope 13 is not easy to be twisted, which is beneficial to improve the service life of the steel rope 13. The upper bearing box 7 and the lower bearing box 8 are connected by the connecting bolt 11, and the overall weight can be increased to prevent the opening effect from being easily affected by the lightness of the crankshaft itself.

[0029] 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. 4M3 electric shovel segmented bucket handle, including: The upper turning handle (1) and the lower turning handle (2) are characterized in that: the ends of the upper turning handle (1) and the lower turning handle (2) close to each other are respectively connected to an upper bearing box (7) and a lower bearing box (8); the outer walls of the ends of the upper bearing box (7) and the lower bearing box (8) close to each other are both provided with connecting plates (9); and connecting bolts (11) are provided between the two connecting plates (9); One end of the upper crank handle (1) and the lower crank handle (2) are both equipped with a rotating bearing (6), and the other end of the lower crank handle (2) is fixedly equipped with a shoe-shaped ring (12), and the inside of the shoe-shaped ring (12) is connected with a steel rope (13); A fixing nut (4) is installed on the outer wall of the end of the upper handle (1) and the lower handle (2) close to each other, and a limiting hole (5) is provided on the outer wall of the end of the upper handle (1) and the lower handle (2) close to the fixing nut (4), and a cotter pin (15) is installed inside the two limiting holes (5).

2. The 4M3 electric shovel segmented bucket handle according to claim 1 is characterized in that: The two connecting plates (9) are respectively fixedly mounted on the outer walls of the upper bearing box (7) and the lower bearing box (8); four connecting bolts (11) are symmetrically arranged; connecting holes (10) are provided on the surfaces of the two connecting plates (9) close to the connecting bolts (11); and the two connecting plates (9) are tightly connected by the connecting bolts (11).

3. The 4M3 electric shovel segmented bucket handle according to claim 2 is characterized in that: The four connecting bolts (11) are each provided with a positioning groove (16) on the side wall of one end close to the upper bearing box (7), the insides of the four positioning grooves (16) are each slidably connected with a positioning rod (17), and the outer wall of the upper bearing box (7) close to the four positioning rods (17) is correspondingly provided with a telescopic groove (21).

4. The 4M3 electric shovel segmented bucket handle according to claim 3 is characterized in that: One end of each of the four positioning rods (17) is slidably inserted into an adjacent telescopic slot (21) and fixedly connected to a spring (18); one end of each of the four springs (18) is fixedly mounted on an inner wall of the telescopic slot (21); a limiting block (19) is fixedly mounted on an outer wall of each end of the four positioning rods (17) close to the spring (18); and a limiting slot (20) is correspondingly provided on an inner wall of each of the four telescopic slots (21) close to an adjacent limiting block (19).

5. The 4M3 electric shovel segmented bucket handle according to claim 1 is characterized in that: The ends of the upper bearing box (7) and the lower bearing box (8) that are away from each other are both provided with a plug-in hole (14); the ends of the upper crank handle (1) and the lower crank handle (2) that are close to each other are slid through the adjacent plug-in holes (14) and inserted into the upper bearing box (7) and the lower bearing box (8); and the two rotating bearings (6) are respectively fixedly mounted on the inner walls of the upper bearing box (7) and the lower bearing box (8) at one end close to the adjacent plug-in holes (14).

6. The 4M3 electric shovel segmented bucket handle according to claim 1 is characterized in that: A fixing thread (3) is provided on the outer wall of the ends of the upper crank handle (1) and the lower crank handle (2) that are close to each other, and two fixing nuts (4) are respectively threadedly mounted on the upper crank handle (1) and the lower crank handle (2) through the fixing thread (3).

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