Pull arm hook capable of switching stroke of telescopic arm

Abstract

The arm pulling hook comprises a transmission worm gear, a rotating lead screw, an internal thread cavity and a transmission worm, the upper end of a driving motor is connected with the transmission worm, the front side of the annular side face of the transmission worm is meshed with the transmission worm gear, the rotating lead screw is arranged in the transmission worm gear, and the internal thread cavity is formed in the lower side in the arm pulling hook. The driving motor is controlled to rotate forwards or backwards, so that the transmission worm can drive the transmission worm gear to rotate forwards or backwards, the transmission worm gear can drive the rotating lead screw to rotate forwards and backwards together, then the arm pulling hook is made to stretch out and draw back leftwards and rightwards, and when the arm pulling hook stretches out in place, a long dustbin can be lifted; and when the pull arm hook is contracted in place, the short garbage can can be lifted, so that the hooklift body can pull the two different garbage cans.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitation equipment, in particular to a pull arm hook with switchable telescopic arm travel. Background Art

[0002] Garbage trucks with detachable carriages are an indispensable transport vehicle in my country's current sanitation and cleaning work. Garbage trucks with detachable carriages use a hook to automatically load and unload garbage bins. The main cylinder drives the carriage to move horizontally, and the main cylinder drives the hook to flip, driving the hook to lift or lower the garbage bin.

[0003] A garbage hook arm truck provided by publication number "CN211168396U" is provided with a guide wheel locking mechanism on the base to fix the guide wheel of the hook arm box to prevent the hook arm box from shaking left and right and improve the stability of the hook arm box structure. The guide wheel locking mechanism adopts a structure of a bottom plate and an inclined plate. The bottom plate is fixed with bolts through fixing nuts, and the inclined plate is inclined. One end of the inclined plate of the locking piece is adjusted to be stuck on the guide wheel, and the bolt screw is stuck in the guide groove. The fixing nut can be used to lock the bottom plate, and the two inclined plates can realize the locking of the left and right sides of a pair of guide wheels of the hook arm box to prevent it from tilting left and right.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] In actual use, the garbage hook arm truck can only pull garbage bins of the same length. However, some garbage transfer stations have bins of two lengths, long and short. As a result, the garbage hook arm truck needs to be equipped with different hook arms when facing bins of different lengths. This processing method easily results in several hook arms at the same station, which not only increases the cost of the garbage transfer station, but also affects normal operation scheduling. Utility Model Content

[0006] The utility model aims to provide a telescopic arm hook with switchable travel, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pulling arm hook with switchable telescopic arm stroke comprises a garbage bin, a pulling arm hook, a pulling arm trolley body, a linkage arm and a swing frame, wherein a swing frame is arranged on the right side inside the pulling arm trolley body, a linkage arm is movably connected to the inner wall of the swing frame, and the pulling arm hook is connected to the left side inside the linkage arm, a garbage bin is placed on the upper end surface of the pulling arm trolley body, a telescopic assembly for telescopically adjusting the pulling arm hook is arranged inside the linkage arm, so that the pulling arm hook can pull garbage bins of different lengths, and a limiting assembly for limiting the telescopic assembly and the pulling arm hook is arranged inside the linkage arm to prevent the telescopic assembly and the pulling arm hook from slipping and loosening during use.

[0009] Preferably, the telescopic assembly includes a transmission worm gear, a rotating screw, an internal threaded cavity, a driving motor and a transmission worm gear. The driving motor is installed on the right side of the lower end surface of the linkage arm, and the upper end of the driving motor is connected to a transmission worm gear. The front side of the annular side surface of the transmission worm gear is meshed with a transmission worm gear, and a rotating screw gear is arranged inside the transmission worm gear. An internal threaded cavity is opened on the lower side of the interior of the pulling arm hook.

[0010] Preferably, the rotating screw is meshed with the internal thread cavity, and a storage cavity is opened on the left side inside the linkage arm, and the storage cavity matches the arm hook.

[0011] Preferably, the limiting assembly includes an anti-detachment baffle, a limiting groove, a follower block, a follower plate and an anti-detachment cover. A follower plate is provided at the right end of the rotating screw, a follower block is provided on the right side of the lower end face of the pulling arm hook, a limiting groove is provided on the lower side of the linkage arm, an anti-detachment cover is installed on the right side of the linkage arm, and an anti-detachment baffle is installed on the left end face of the linkage arm.

[0012] Preferably, the limiting groove matches the follower block, the anti-dropout cover and the anti-dropout baffle are both detachable structures, the anti-dropout cover is annular, and the anti-dropout baffle is frame-shaped.

[0013] Preferably, a tail guide wheel is installed at the tail of the hook arm vehicle body, and a limiting beam is fixedly connected to the right side inside the hook arm vehicle body.

[0014] Preferably, hydraulic cylinders are symmetrically installed at the front and rear ends of the linkage arm, and a protective cover is installed on the lower end surface of the linkage arm, and the protective cover is a detachable structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can control the driving motor to rotate forward or reversely, so that the transmission worm can drive the transmission worm wheel to rotate forward or reversely, and the transmission worm wheel can drive the rotating screw to rotate forward and reversely, so that the arm hook can be extended and retracted left and right. When the arm hook is extended to the right position, the long garbage bin can be pulled, and when the arm hook is retracted to the right position, the short garbage bin can be pulled, so that the arm truck body can pull two different types of garbage bins, which not only reduces the cost of the garbage transfer station, but also does not affect the normal operation scheduling;

[0017] 2. The utility model provides a follower block and a limit groove to prevent the arm hook from over-extending during the extension and retraction process, and the anti-slip baffle will block and limit the follower block to prevent the arm hook from slipping during the extension process. The follower plate and the anti-slip cover prevent the rotating screw from shaking or shifting during the rotation and use, thereby improving the stability of the telescopic assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the utility model in which the middle arm truck body is adapted to a short garbage bin;

[0019] Figure 2 It is a structural diagram of the arm hook, linkage arm and swing frame in the utility model;

[0020] Figure 3 It is a front cross-sectional view of the telescopic component and the limiting component in the utility model;

[0021] Figure 4 It is a partial structural diagram of the telescopic component in the utility model;

[0022] Figure 5 The figure is a schematic diagram of the structure in which the arm truck body is adapted to a long garbage bin in the present invention.

[0023] In the figure: 1. Trash bin; 2. Boom hook; 3. Boom truck body; 31. Limiting beam; 32. Tail guide wheel; 4. Limiting assembly; 41. Anti-slip baffle; 42. Limiting groove; 43. Follower block; 44. Follower plate; 45. Anti-slip cover; 5. Telescopic assembly; 51. Transmission worm gear; 52. Rotating screw rod; 53. Internal thread cavity; 54. Protective cover; 55. Driving motor; 56. Transmission worm; 57. Storage cavity; 6. Linkage arm; 61. Hydraulic cylinder; 7. Swing frame. 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.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A telescopic arm hook with switchable telescopic arm stroke comprises a garbage bin 1, a hook 2, a truck body 3, a linkage arm 6 and a swing frame 7. The swing frame 7 is arranged on the right side inside the truck body 3. The swing frame 7 is a structure that can swing up and down. The linkage arm 6 is movably connected to the inner wall of the swing frame 7. The hook 2 is connected to the left side inside the linkage arm 6. The swing frame 7 that can swing up and down enables the linkage arm 6 to have a larger swing range, so that the linkage arm 6 can drive the hook 2 to swing to lift or place the garbage bin 1. The garbage bin 1 is placed on the upper end surface of the truck body 3, and the garbage bin 1 will collect garbage.

[0028] A tail guide wheel 32 is installed at the rear of the arm truck body 3, and the tail guide wheel 32 makes the garbage bin 1 smoother when being lifted onto the vehicle by the arm hook 2. A limiting beam 31 is fixedly connected to the right side of the arm truck body 3, and the limiting beam 31 will support and limit the linkage arm 6 that swings to a horizontal position. Hydraulic cylinders 61 are symmetrically installed at the front and rear ends of the linkage arm 6, and the hydraulic cylinder 61 will drive the linkage arm 6 to swing up and down. Since the internal detailed structure and working principle of the hydraulic cylinder 61 belong to the relatively mature technology in the prior art, they will not be described in detail here. A telescopic component 5 for telescopically adjusting the arm hook 2 is arranged inside the linkage arm 6, so that the arm hook 2 can pull garbage bins 1 of different lengths. A limiting component 4 for limiting the telescopic component 5 and the arm hook 2 is arranged inside the linkage arm 6 to prevent the telescopic component 5 and the arm hook 2 from slipping and loosening during use.

[0029] The telescopic assembly 5 includes a transmission worm gear 51, a rotating screw 52, ​​an internal threaded cavity 53, a driving motor 55 and a transmission worm 56. The driving motor 55 is installed on the right side of the lower end surface of the linkage arm 6. The driving motor 55 is connected to the external arm truck control box through a wire. The driving motor 55 and the transmission worm 56 are connected through a coupling. The driving motor 55 will drive the transmission worm 56 to rotate forward and reverse. The upper end of the driving motor 55 is connected to the transmission worm 56, and the transmission worm 56 will drive the transmission worm gear 51 to rotate. The front side of the annular side of the transmission worm 56 is meshed with a transmission worm gear 51, and the transmission worm gear 51 will drive the rotating screw 52 to rotate.

[0030] A rotating screw rod 52 is arranged inside the transmission worm wheel 51, and the rotating screw rod 52 is connected to the transmission worm wheel 51 and the follower plate 44 by welding. An internal threaded cavity 53 is opened on the lower side of the inner part of the arm hook 2, and the rotating screw rod 52 is meshed with the internal threaded cavity 53. The meshed rotating screw rod 52 and the internal threaded cavity 53 can adjust the arm hook 2 to the left and right. A storage cavity 57 is opened on the left side of the linkage arm 6, and the storage cavity 57 is matched with the arm hook 2. The storage cavity 57 not only facilitates the arm hook 2 to move left and right inside the linkage arm 6, but also prevents the arm hook 2 from shaking or offsetting during telescopic use. A protective cover 54 is installed on the lower end surface of the linkage arm 6, and the protective cover 54 is a detachable structure. The protective cover 54 will shield the drive motor 55 to prevent the exposed drive motor 55 from being directly corroded by rain or dust, thereby improving the service life of the drive motor 55.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, in this embodiment, a follower block 43 and a limit groove 42 are provided to prevent the arm hook 2 from over-extending during the extension and retraction process, and the anti-slip baffle 41 blocks and limits the follower block 43 to prevent the arm hook 2 from slipping during the extension process, and the follower plate 44 and the anti-slip cover 45 prevent the rotating screw rod 52 from shaking or shifting during the rotation process, thereby improving the stability of the telescopic assembly 5.

[0033] The limiting assembly 4 includes an anti-slip baffle 41, a limiting groove 42, a follower block 43, a follower disc 44 and an anti-slip cover 45. The right end of the rotating screw 52 is provided with a follower disc 44, and the anti-slip cover 45 is installed on the right side of the linkage arm 6. The anti-slip cover 45 is a detachable structure, and the anti-slip cover 45 is annular. The follower disc 44 and the annular anti-slip cover 45 prevent the rotating screw 52 from shaking or displacing during rotation. A ball bearing is provided on the annular side of the follower disc 44. The ball bearing makes the follower disc 44 rotate more smoothly. The right side of the lower end surface of the arm hook 2 A follower block 43 is provided, and the follower block 43 is connected to the arm hook 2 by welding. A limiting groove 42 is provided on the lower side of the inner part of the linkage arm 6, and the limiting groove 42 matches the follower block 43. The matching limiting groove 42 and the follower block 43 prevent the arm hook 2 from over-extending during the extension and retraction process. An anti-detachment baffle 41 is installed on the left end face of the linkage arm 6. The anti-detachment baffle 41 is a detachable structure, and the anti-detachment baffle 41 is frame-shaped. The frame-shaped anti-detachment baffle 41 will block and limit the follower block 43 to prevent the arm hook 2 from slipping during the extension process.

[0034] Working principle: During the use of the arm truck body 3, when it is necessary to lift the long garbage bin 1 onto the arm truck body 3, the driver first drives the arm truck body 3 to an appropriate position next to the long garbage bin 1, and then controls the drive motor 55 to rotate forward through the external arm truck control box, so that the drive motor 55 drives the drive worm gear 51 to reverse through the transmission worm 56, and then the transmission worm gear 51 drives the rotating screw rod 52 to reverse and engage with the internal thread cavity 53. At this time, under the thread engagement force, the arm hook 2 will extend to the left, and the follower block 43 will move left together with the arm hook 2, and move outward until the follower block 43 contacts the anti-slip baffle 41. At this time, the arm hook 2 will not continue to extend, and then the driver can control the hydraulic cylinder 61 to extend, so that the linkage arm 6 drives the arm hook 2 to swing to the right to hang the long garbage bin 1. After hanging, the hydraulic cylinder 61 is controlled to retract so that the linkage arm 6 drives the arm hook 2 to swing to the left to lift the long garbage bin 1 onto the arm truck body 3 (reference Figure 5), so that the arm truck body 3 can transport the long garbage bin 1; when it is necessary to lift the short garbage bin 1 onto the arm truck body 3, similarly, the driver only needs to control the driving motor 55 to reverse, so that the transmission worm 56 can drive the transmission worm wheel 51 to rotate forward, and then the transmission worm wheel 51 can drive the rotating screw 52 to rotate forward, and then the arm hook 2 will retract to the right. When the arm hook 2 is retracted into place, the hydraulic cylinder 61 can be used to control the arm hook 2 to lift the short garbage bin 1 onto the arm truck body 3 (refer to Figure 1 ), so that the arm truck body 3 can transport garbage bins 1 of different lengths.

[0035] 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 telescopic arm hook with switchable travel, comprising a garbage bin (1), a telescopic arm hook (2), a telescopic arm vehicle body (3), a linkage arm (6) and a swing frame (7), characterized in that: A swing frame (7) is provided on the right side of the interior of the arm-pulling vehicle body (3); a linkage arm (6) is movably connected to the inner wall of the swing frame (7); a boom hook (2) is connected to the left side of the interior of the linkage arm (6); and a garbage bin (1) is placed on the upper end surface of the arm-pulling vehicle body (3); The linkage arm (6) is provided with a telescopic assembly (5) for telescopically adjusting the arm hook (2) so that the arm hook (2) can pull garbage bins (1) of different lengths. The linkage arm (6) is provided with a limiting assembly (4) for limiting the position of the telescopic assembly (5) and the arm hook (2) so as to prevent the telescopic assembly (5) and the arm hook (2) from slipping or loosening during use.

2. The telescopic arm hook with switchable travel according to claim 1, characterized in that: The telescopic assembly (5) comprises a transmission worm wheel (51), a rotating screw (52), an internal thread cavity (53), a driving motor (55) and a transmission worm (56); the driving motor (55) is installed on the right side of the lower end surface of the linkage arm (6); the upper end of the driving motor (55) is connected to the transmission worm (56); the front side of the annular side surface of the transmission worm (56) is meshed with a transmission worm wheel (51); a rotating screw (52) is arranged inside the transmission worm wheel (51); and an internal thread cavity (53) is opened on the lower side of the inner side of the arm hook (2).

3. The telescopic arm hook with switchable travel according to claim 2, characterized in that: The rotating screw rod (52) is meshed with the internal thread cavity (53), and a storage cavity (57) is provided on the left side inside the linkage arm (6), and the storage cavity (57) matches the arm hook (2).

4. The telescopic arm hook with switchable travel according to claim 2, characterized in that: The limiting assembly (4) comprises an anti-slip baffle (41), a limiting groove (42), a follower block (43), a follower disc (44) and an anti-slip cover (45); the right end of the rotating screw rod (52) is provided with a follower disc (44); the right side of the lower end surface of the pulling arm hook (2) is provided with a follower block (43); the lower side of the linkage arm (6) is provided with a limiting groove (42); the right side of the linkage arm (6) is provided with an anti-slip cover (45); and the left end surface of the linkage arm (6) is provided with an anti-slip baffle (41).

5. The telescopic arm hook with switchable travel according to claim 4, characterized in that: The limiting groove (42) matches the follower block (43); the anti-detachment cover (45) and the anti-detachment baffle (41) are both detachable structures; the anti-detachment cover (45) is annular, and the anti-detachment baffle (41) is frame-shaped.

6. The telescopic arm hook with switchable travel according to claim 1, characterized in that: A tail guide wheel (32) is installed at the tail of the arm-pulling vehicle body (3), and a limiting beam (31) is fixedly connected to the right side inside the arm-pulling vehicle body (3).

7. The telescopic arm hook with switchable travel according to claim 1, characterized in that: Hydraulic cylinders (61) are symmetrically mounted at the front and rear ends of the linkage arm (6), and a protective cover (54) is mounted on the lower end surface of the linkage arm (6), and the protective cover (54) is a detachable structure.

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