Automatic loading and unloading pull arm loading device

Abstract

The utility model provides a self-loading and unloading draw arm loading device which comprises an auxiliary frame and a draw hook arm, the draw hook arm is arranged at the front end of a swing frame, a cleaning assembly is arranged on the lower side of a rear idler wheel, and an auxiliary supporting assembly used for limiting the draw hook arm is arranged on the front side in the auxiliary frame. In the process, the buffer seat makes contact with the drag hook arm swinging downwards and buffers a part of impact force generated by downward swinging, and the buffer spring buffers and adsorbs a part of impact force transmitted by the supporting plate, so that the drag hook arm swinging downwards in place is blocked and limited, and in the process, the buffer seat makes contact with the drag hook arm swinging downwards and buffers a part of impact force generated by downward swinging. And by installing a dust scraping block, impurities on the annular side face of the rotating rear rolling wheel can be cleaned and scraped off, and the situation that the guiding and conveying smoothness of the rear rolling wheel is affected due to the fact that the adhered impurities cannot be cleaned in time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of self-loading and unloading arm trucks, in particular to a self-loading and unloading arm loading device. Background Art

[0002] The self-loading and unloading boom truck is a commonly used truck with unloading compartments. It has two functions: self-unloading of goods and automatic loading and unloading of the box (i.e., complete loading and unloading). These two functions are completed by a vehicle-mounted working device, which has high working efficiency. The locking frame mechanism of the boom truck is set on the flip frame, and the locking function is realized through the action of the hydraulic cylinder.

[0003] Publication No. "CN208439796U" provides a safety device for loading on a hooklift truck, which solves the problem that the existing hooklift truck loading only rotates on a rotating shaft when unloading a container, lacks a safety device, and is prone to safety accidents; it can ensure that the lifting arm and the subframe are locked during the unloading process, and can also ensure that they are freely separated during the unloading process, thereby helping to improve the safety of loading on the hooklift truck.

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

[0005] Firstly, the sub-frame of the arm-pulling truck does not have a corresponding buffer structure inside to buffer part of the impact force of the downward-swinging flip arm, which causes the flip arm that swings downward to be easily directly bumped against the sub-frame. Such repeated direct bumps are likely to affect the service life of the contact part between the flip arm and the sub-frame. Secondly, the tail guide wheel of the arm-pulling truck does not have a corresponding cleaning structure, which causes the tail guide wheel to be unable to be cleaned in time once impurities adhere to it during actual use. The adhered impurities will affect the guiding smoothness of the tail guide wheel, and the practicality needs to be improved. Utility Model Content

[0006] The utility model aims to provide a self-loading and unloading arm loading device 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 self-loading and unloading arm mounting device comprises a subframe, a lifting hydraulic cylinder, a hook arm, a swing frame, a rear roller and a tail reinforcement plate, wherein a lifting hydraulic cylinder is installed on the front side of the interior of the subframe, a swing frame is installed on the rear side of the interior of the subframe, a hook arm is arranged at the front end of the swing frame, a self-loading and unloading hook is installed on the upper end of the hook arm, a tail reinforcement plate is fixedly connected to the rear side of the interior of the subframe, rear rollers are symmetrically installed on the left and right sides of the rear of the subframe, a cleaning component is arranged on the lower side of the rear roller, and the cleaning component is used to scrape off impurities adhered to the annular side surface of the rear roller to avoid that the adhered impurities are not processed in time and affect the guiding smoothness of the rear roller, and an auxiliary support component for limiting the hook arm is arranged on the front side of the interior of the subframe.

[0009] Preferably, the auxiliary support assembly includes a limiting support beam, a bottom baffle, a buffer spring, a support plate and a buffer seat. The limiting support beam is fixedly connected to the front side of the interior of the sub-frame, a bottom baffle is installed at the middle position of the lower end surface of the limiting support beam, a buffer spring is clamped on the upper end surface of the bottom baffle, a support plate is installed on the upper end of the buffer spring, and the buffer seat is connected to the upper end surface of the support plate.

[0010] Preferably, the cleaning assembly includes a supporting shell, an extension support plate, a scraping block, a telescopic spring and a lifting plate. The extension support plate is fixedly connected to the rear side of the outer surface of the sub-frame, the supporting shell is installed on the upper end surface of the extension support plate, the telescopic spring is clamped inside the supporting shell, the lifting plate is installed on the upper side of the supporting shell, and the scraping block is installed on the upper end surface of the lifting plate.

[0011] Preferably, a guide cavity is provided inside the support shell, and the guide cavity matches the lifting plate, and the support shell is a detachable structure.

[0012] Preferably, the scraping block is made of highly tear-resistant silicone rubber, the scraping block is a detachable structure, and the upper end of the scraping block is in contact with the lower side of the annular side surface of the rear roller.

[0013] Preferably, a limiting cavity is provided in the middle of the limiting support beam, and the limiting cavity matches the support plate, mounting screws are symmetrically installed on the left and right sides of the bottom baffle, and the buffer seat is made of sponge rubber.

[0014] Preferably, a locking block is provided on the left side of the upper end surface of the tail reinforcement plate, an electric hydraulic push rod is installed on the lower side of the right end surface of the locking block, and the locking block is L-shaped.

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

[0016] 1. The utility model blocks and limits the downward swinging hook arm by fixing and connecting the limit support beam, so as to prevent the hook arm from swinging downward excessively. During this process, the buffer seat contacts the downward swinging hook arm and buffers part of the impact force of the downward swinging hook arm, and the buffer spring buffers and absorbs part of the impact force transmitted by the support plate, so as to prevent the downward swinging hook arm from directly colliding with the limit support beam, thereby ensuring the service life of the limit support beam;

[0017] 2. In the process of the rear roller guiding the external arm box, the scraper block will clean and scrape off the impurities on the rotating annular side of the rear roller to avoid the adhered impurities not being cleaned in time and affecting the guiding smoothness of the rear roller. During this process, the squeezing force of the telescopic spring will lift the scraper block through the lifting plate so that the upper end of the scraper block is always in contact with the lower side of the annular side of the rear roller to perform the scraping operation, thereby ensuring the scraping effect of the scraper block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a left view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the auxiliary support assembly in the utility model;

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

[0022] Figure 5 It is a front cross-sectional view of the cleaning component in the present utility model.

[0023] In the figure: 1. Subframe; 2. Lifting hydraulic cylinder; 3. Auxiliary support assembly; 31. Limit support beam; 32. Bottom baffle; 321. Mounting screw; 33. Buffer spring; 34. Limit cavity; 35. Support plate; 36. Buffer seat; 4. Hook arm; 5. Swing frame; 6. Cleaning assembly; 61. Support shell; 62. Extension support plate; 63. Scraping block; 64. Telescopic spring; 65. Guide cavity; 66. Lifting plate; 7. Rear roller; 8. Tail reinforcement plate; 81. Locking block; 82. Electric hydraulic push rod; 9. Self-loading and unloading hook. 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 self-loading and unloading arm loading device comprises a subframe 1, a lifting hydraulic cylinder 2, a hook arm 4, a swing frame 5, a rear roller 7 and a tail reinforcement plate 8. A lifting hydraulic cylinder 2 is installed on the front side of the subframe 1. The lifting hydraulic cylinder 2 is connected to the external automobile hydraulic system through a hydraulic hose. The lifting hydraulic cylinder 2 facilitates the staff to control the swing of the hook arm 4 through the external automobile hydraulic system. Since the internal detailed structure and working principle of the lifting hydraulic cylinder 2 are relatively mature in the prior art, they will not be described in detail here. A swing frame 5 is installed on the rear side of the subframe 1. The movable frame 5 and the hook arm 4 are an integrated structure. The swing frame 5 makes the hook arm 4 swing more stably. The front end of the swing frame 5 is provided with a hook arm 4. The upper end of the hook arm 4 is provided with a self-loading and unloading hook 9. The hook arm 4 will drive the self-loading and unloading hook 9 to swing so that the self-loading and unloading hook 9 can self-load and unload the external arm box. A tail reinforcement plate 8 is fixedly connected to the rear side of the sub-frame 1. The tail reinforcement plate 8 can further improve the strength of the rear end of the sub-frame 1. Rear rollers 7 are symmetrically installed on the left and right sides of the rear end of the sub-frame 1. The rear rollers 7 make the external arm box smoother when being loaded.

[0028] A locking block 81 is arranged on the left side of the upper end surface of the tail reinforcement plate 8, and the locking block 81 is L-shaped. An electric hydraulic push rod 82 is installed on the lower side of the right end surface of the locking block 81, and the electric hydraulic push rod 82 will drive the locking block 81 to move left and right, so that the locking block 81 with an L-shaped shape can lock or unlock the swing frame 5 that swings downward into place. A cleaning component 6 is arranged on the lower side of the rear roller 7, and the cleaning component 6 is used to scrape off impurities adhered to the annular side surface of the rear roller 7 to avoid the adhered impurities not being processed in time and affecting the guiding smoothness of the rear roller 7. An auxiliary support component 3 for limiting the pull hook arm 4 is arranged on the front side of the sub-frame 1.

[0029] The auxiliary support assembly 3 includes a limiting support beam 31, a bottom baffle 32, a buffer spring 33, a support plate 35 and a buffer seat 36. The limiting support beam 31 is fixedly connected to the front side of the sub-frame 1. The limiting support beam 31 will block and limit the hook arm 4 that has swung downward to a certain position to prevent the hook arm 4 from swinging downward excessively. A bottom baffle 32 is installed in the middle position of the lower end surface of the limiting support beam 31. The bottom baffle 32 supports the buffer spring 33. The buffer spring 33 is clamped on the upper end surface of the bottom baffle 32. The buffer spring 33 not only enables the buffer seat 36 to be able to extend and retract up and down, but also can alleviate a part of the impact force transmitted by the support plate 35.

[0030] A support plate 35 is installed on the upper end of the buffer spring 33. The upper end surface of the support plate 35 is connected to the lower end surface of the buffer seat 36 by bonding. The support plate 35 will support the buffer seat 36. The upper end surface of the support plate 35 is connected to the buffer seat 36. The buffer seat 36 is made of sponge rubber. The buffer seat 36 made of sponge rubber will buffer the impact force of a part of the hook arm 4 swinging downward to avoid direct collision with the limit support beam 31 when the hook arm 4 swings downward. A limit cavity 34 is provided in the middle position inside the limit support beam 31, and the limit cavity 34 matches the support plate 35. The limit cavity 34 facilitates the support plate 35 to move up and down inside the limit support beam 31. Mounting screws 321 are symmetrically installed on the left and right sides of the bottom baffle plate 32. The mounting screws 321 facilitate the later staff to disassemble and assemble the bottom baffle plate 32 separately, so as to replace and maintain the buffer spring 33 inside the limit cavity 34.

[0031] Embodiment 2:

[0032] On the basis of Example 1, in this embodiment, during the process of the rear roller 7 guiding the external arm box, the scraper block 63 will clean and scrape off the impurities on the annular side of the rotating rear roller 7 to prevent the adhered impurities from not being cleaned in time and affecting the guiding smoothness of the rear roller 7. During this process, the squeezing force of the telescopic spring 64 will lift the scraper block 63 through the lifting plate 66, so that the upper end of the scraper block 63 is always in contact with the lower side of the annular side of the rear roller 7 to perform the scraping operation, thereby ensuring the scraping effect of the scraper block 63.

[0033] The cleaning assembly 6 includes a support shell 61, an extension support plate 62, a scraper block 63, a telescopic spring 64 and a lifting plate 66. The extension support plate 62 is fixedly connected to the rear side of the outer surface of the sub-frame 1. The extension support plate 62 supports the support shell 61. The support shell 61 is installed on the upper end surface of the extension support plate 62. The support shell 61 is a detachable structure. The detachable support shell 61 not only protects the lifting plate 66 and the telescopic spring 64, but also facilitates the staff to disassemble, maintain or replace the telescopic spring 64 in the later stage.

[0034] A telescopic spring 64 is mounted inside the support shell 61, and the telescopic spring 64 applies an upward thrust to the lifting plate 66 so that the lifting plate 66 lifts the scraping block 63, thereby making the upper end of the scraping block 63 fit more tightly with the lower side of the annular side of the rear roller 7. A lifting plate 66 is installed on the upper side of the support shell 61 to support the scraping block 63. The scraping block 63 is made of highly tear-resistant silicone rubber. The upper end of the scraping block 63 fits the lower side of the annular side of the rear roller 7 better. The scraper block 63 is in contact with the side, and the material of the scraper block 63 is highly tear-resistant silicone rubber, which can not only scrape off the impurities adhered to the annular side of the rear roller 7, but also has a long service life. The scraper block 63 is a detachable structure, and the detachable scraper block 63 is convenient for the staff to replace it later. A guide cavity 65 is opened inside the support shell 61, and the guide cavity 65 is matched with the lifting plate 66. The guide cavity 65 not only facilitates the lifting plate 66 to move up and down inside the support shell 61, but also prevents the lifting plate 66 from shaking or offsetting during use.

[0035] Working principle: During the use of the device, the limit support beam 31 will block and limit the hook arm 4 that has swung downward to a certain position, so as to prevent the hook arm 4 from swinging downward excessively. Before the hook arm 4 swings downward to contact the upper end surface of the limit support beam 31, it will contact the buffer seat 36. At this time, the buffer seat 36 made of sponge rubber will buffer a part of the impact force of the hook arm 4 swinging downward, and the buffer spring 33 will buffer and absorb a part of the impact force transmitted from the support plate 35, so as to prevent the hook arm 4 that swings downward from directly colliding with the limit support beam 31, thereby ensuring the service life of the limit support beam 31, and the buffer spring 33 also enables the buffer seat 36 to have the ability to move downward, so that the limit support beam 31 can The movable hook arm 4 is used to block and limit the position; during the self-loading and unloading process of the self-loading and unloading hook 9 on the external arm box, the rear roller 7 will guide the external arm box, making the external arm box smoother during the loading and unloading process. At the same time, the scraper block 63 will clean the annular side of the rotating rear roller 7, and scrape off the impurities adhered to the annular side of the rear roller 7 to avoid the adhered impurities not being cleaned in time to affect the guiding smoothness of the rear roller 7. During this process, the squeezing force of the telescopic spring 64 will lift the scraper block 63 through the lifting plate 66, so that the upper end of the scraper block 63 is always in contact with the lower side of the annular side of the rear roller 7 to perform the scraping operation, to avoid the situation where the rear roller 7 cannot be cleaned when the upper end of the scraper block 63 is worn.

[0036] 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 self-loading and unloading arm loading device, comprising a subframe (1), a lifting hydraulic cylinder (2), a hook arm (4), a swing frame (5), a rear roller (7) and a tail reinforcement plate (8), characterized in that: A lifting hydraulic cylinder (2) is installed on the front side of the sub-frame (1), a swing frame (5) is installed on the rear side of the sub-frame (1), a hook arm (4) is provided at the front end of the swing frame (5), a self-loading and unloading hook (9) is installed on the upper end of the hook arm (4), and a tail reinforcement plate (8) is fixedly connected to the rear side of the sub-frame (1); The rear rollers (7) are symmetrically mounted on the left and right sides of the rear of the sub-frame (1); a cleaning assembly (6) is arranged on the lower side of the rear roller (7); and the cleaning assembly (6) is used to scrape off impurities adhered to the annular side surface of the rear roller (7) to prevent the adhered impurities from not being processed in time and affecting the smoothness of the guiding of the rear roller (7); and an auxiliary support assembly (3) for limiting the position of the hook arm (4) is arranged on the front side of the interior of the sub-frame (1).

2. A self-loading and unloading arm loading device according to claim 1, characterized in that: The auxiliary support assembly (3) comprises a limit support beam (31), a bottom baffle (32), a buffer spring (33), a support plate (35) and a buffer seat (36); the limit support beam (31) is fixedly connected to the front side of the interior of the sub-frame (1); the bottom baffle (32) is installed at the middle position of the lower end surface of the limit support beam (31); the buffer spring (33) is clamped on the upper end surface of the bottom baffle (32); the support plate (35) is installed on the upper end of the buffer spring (33); and the upper end surface of the support plate (35) is connected to the buffer seat (36).

3. The self-loading and unloading arm loading device according to claim 1, characterized in that: The cleaning assembly (6) comprises a supporting shell (61), an extension support plate (62), a scraping block (63), a telescopic spring (64) and a lifting plate (66); the extension support plate (62) is fixedly connected to the rear side of the outer surface of the sub-frame (1); the upper end surface of the extension support plate (62) is mounted with the supporting shell (61); the interior of the supporting shell (61) is clamped with the telescopic spring (64); the upper side of the interior of the supporting shell (61) is mounted with the lifting plate (66); the upper end surface of the lifting plate (66) is mounted with the scraping block (63).

4. A self-loading and unloading arm loading device according to claim 3, characterized in that: A guide cavity (65) is provided inside the support shell (61), and the guide cavity (65) matches the lifting plate (66). The support shell (61) is a detachable structure.

5. The self-loading and unloading arm loading device according to claim 3, characterized in that: The scraping block (63) is made of highly tear-resistant silicone rubber and is a detachable structure. The upper end of the scraping block (63) is in contact with the lower side of the annular side surface of the rear roller (7).

6. The self-loading and unloading arm loading device according to claim 2, characterized in that: A limiting cavity (34) is provided in the middle of the limiting support beam (31), and the limiting cavity (34) matches the support plate (35). Mounting screws (321) are symmetrically installed on the left and right sides of the bottom baffle (32). The buffer seat (36) is made of sponge rubber.

7. The self-loading and unloading arm loading device according to claim 1, characterized in that: A locking block (81) is arranged on the left side of the upper end surface of the tail reinforcement plate (8), and an electric hydraulic push rod (82) is installed on the lower side of the right end surface of the locking block (81), and the locking block (81) is L-shaped.

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