Tail door locking device of motor sweeper

Abstract

The utility model provides a motor sweeper tail door locking device which comprises a tail door plate and an oil cylinder, the oil cylinder is installed above the tail door plate through oil cylinder supporting legs, hinge installation supporting legs are fixed to the left end and the right end above the tail door plate, tail door hinge seats are rotatably connected to the lower portions of the hinge installation supporting legs, and a tail door is fixed to the bottom of each tail door hinge seat. According to the tail door sealing device of the garbage can, the situation that sewage leaks out at the tail door of the garbage can can be prevented, the sealing effect is good, the limiting pin is arranged on the garbage can body, the limiting pin and the tail door rotating shaft limiting block are extruded from outside to inside, and therefore the sealing effect is good. And all structural components of the device are completed on the garbage can, stress and deformation of a frame girder are effectively avoided through opening and closing of the tail door, and the service life of the vehicle is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sweeper equipment, in particular to a tailgate locking device for a sweeper. Background Art

[0002] The tight closure of the tailgate of the dustbin of the sweeper is the prerequisite for the sewage suction capacity of the sweeper and the guarantee for preventing sewage dripping and spilling. At present, some common tailgates of sweepers mostly adopt a hook-and-buckle structure, usually two hook arms on the left and right driven by a hydraulic cylinder on the tailgate, which hook the lugs on the frame girder to achieve the effect of tightening the tailgate. This structure often lacks a pressing device, and its airtightness is poor. At the same time, the opening, closing and closing actions of the tailgate cause a large force between the box hook arm and the lug of the frame girder, and the two are prone to relative displacement, resulting in deformation of the frame and the dustbin structure, and shortening the service life of the vehicle. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problems existing in the above background art, and to propose a tailgate locking device for a sweeper.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A tailgate locking device for a sweeper, comprising a tailgate plate and an oil cylinder. The oil cylinder is installed above the tailgate plate through an oil cylinder support leg. Hinge installation legs are fixed at both the left and right ends above the tailgate plate. Tailgate hinge seats are rotatably connected below the hinge installation legs. A tailgate is fixed at the bottom of the tailgate hinge seat. A tailgate tightening push rod support leg is fixed in the middle of the tailgate. A tailgate tightening push rod is connected below the middle of the tailgate tightening push rod support leg. A push rod connection block is fixedly connected to the bottom of the push rod at the output end of the tailgate tightening push rod. A rotating shaft support leg is fixed at the bottom of the tailgate. A pressing rotating shaft is horizontally rotatably connected in the middle of the rotating shaft support leg. Rotating shaft limit blocks are fixed at both the left and right ends of the pressing rotating shaft. Limit pin support legs are fixed at both the left and right ends of the bottom of the tailgate plate. Limit pins are horizontally fixed in the middle of the limit pin support legs.

[0006] Preferably, a chute is provided in an opening in the middle of the tailgate tightening push rod support leg, and the tailgate tightening push rod slides up and down in the chute of the tailgate tightening push rod support leg.

[0007] Preferably, a sealing strip is fixed on the outer side of the rear end of the tailgate, and the outer side of the tailgate and the sealing strip are both in close contact with the tailgate plate.

[0008] Preferably, the pressing rotating shaft rotates back and forth in the rotating shaft support leg, and the push rod connection block is just nested on the outer middle of the pressing rotating shaft.

[0009] Preferably, the rotating shaft limiting block is arranged in the shape of a reverse comma ",", and the rotating shaft limiting block is exactly above the limit pin.

[0010] When the tailgate system starts to operate, the push rod under the oil cylinder extends, driving the tailgate tensioning push rod to start moving along the U-shaped notch on the tailgate tensioning push rod leg. At this time, the tailgate hinge seat also starts to rotate, causing the tailgate to start closing. When the sealing rubber strip on the tailgate is basically in contact with the tailgate panel, along with the continuous extension of the push rod of the oil cylinder, the pressing rotating shaft continues to rotate until the rotating shaft limiting block buckles outside the limit pin, and the oil cylinder stops operating. At this time, the sealing rubber strip on the tailgate is exactly in full contact with the tailgate panel, playing a good sealing role, effectively preventing the leakage of sewage at the tailgate of the garbage bin, with a good sealing effect. A limit pin is set on the garbage bin body, and the tailgate rotating shaft limiting block is extruded from the outside to the inside to achieve the effect of closing the tailgate. Moreover, all structural components of this device are completed on the garbage bin. The opening and closing of the tailgate effectively avoid the stress and deformation of the frame girder. The frame and the garbage bin structure are not easily deformed, further improving the service life of the vehicle. Brief Description of the Drawings

[0011] Figure 1 It is a front view of the overall structure in the present utility model;

[0012] Figure 2 It is a partial structure view of the tailgate in the present utility model;

[0013] Figure 3 It is a partial structure view of the pressing rotating shaft and the limit pin in the present utility model.

[0014] Legend Explanation:

[0015] Tailgate panel 1, oil cylinder 2, hinge mounting leg 3, tailgate hinge seat 4, tailgate 5, tailgate tensioning push rod leg 6, tailgate tensioning push rod 7, push rod connecting block 8, rotating shaft leg 9, pressing rotating shaft 10, rotating shaft limiting block 11, limit pin leg 12, limit pin 13. Detailed Description of the Preferred Embodiment

[0016] Example 1, referring to Figures 1-3, A tailgate locking device for a sweeper, comprising a tailgate panel 1 and an oil cylinder 2. The oil cylinder 2 is installed above the tailgate panel 1 through an oil cylinder support leg. At the left and right ends above the tailgate panel 1, hinge mounting legs 3 are fixedly provided. Below the hinge mounting legs 3, tailgate hinge seats 4 are rotatably connected. At the bottom of the tailgate hinge seats 4, a tailgate 5 is fixedly provided. In the middle of the tailgate 5, a tailgate tensioning push rod support leg 6 is fixedly provided. Below the middle of the tailgate tensioning push rod support leg 6, a tailgate tensioning push rod 7 is connected. At the bottom of the push rod at the output end of the tailgate tensioning push rod 7, a push rod connection block 8 is fixedly connected. At the bottom of the tailgate 5, a rotating shaft support leg 9 is fixedly provided. In the middle of the rotating shaft support leg 9, a pressing rotating shaft 10 is horizontally rotatably connected. At the left and right ends of the pressing rotating shaft 10, rotating shaft limit blocks 11 are fixedly provided. At the left and right ends of the bottom of the tailgate panel 1, limit pin support legs 12 are fixedly provided. In the middle of the limit pin support legs 12, limit pins 13 are horizontally fixedly provided.

[0017] A chute is provided in the middle of the tailgate tensioning push rod support leg 6, and the tailgate tensioning push rod 7 slides up and down in the chute of the tailgate tensioning push rod support leg 6;

[0018] A sealing strip is fixedly provided on the outer side of the rear end of the tailgate 5, and the outer side of the tailgate 5 and the sealing strip are both closely attached to the tailgate panel 1;

[0019] When the tailgate 5 system starts to operate, the push rod below the oil cylinder 2 extends, driving the tailgate tensioning push rod 7 to start moving along the chute on the tailgate tensioning push rod support leg 6. At this time, the tailgate hinge seat 4 also starts to rotate, causing the tailgate 6 to start to close. When the sealing strip on the tailgate 6 is basically in contact with the tailgate panel 1, along with the continuous extension of the push rod of the oil cylinder 2, the pressing rotating shaft 10 continues to rotate until the rotating shaft limit block 11 buckles outside the limit pin 13, and the oil cylinder 2 stops operating. At this time, the sealing strip on the tailgate 5 just completely fits with the tailgate panel 1, playing a good sealing role, effectively preventing the leakage of sewage at the tailgate 5 of the garbage bin, and the sealing effect is better;

[0020] The pressing rotating shaft 10 rotates back and forth in the rotating shaft support leg 9, and the push rod connection block 8 is just nested in the middle of the outer side of the pressing rotating shaft 10;

[0021] A limit pin 13 is provided on the main body of the garbage bin, which makes an extrusion from the outside to the inside with the tailgate rotating shaft limit block 11 to achieve the effect of closing the tailgate 5. And all the structural components of this device are completed on the garbage bin. The opening and closing of the tailgate 5 effectively avoid the stress and deformation of the frame girder. The frame and the garbage bin structure are not easily deformed, further improving the service life of the vehicle.

[0022] Embodiment 2. The difference between Embodiment 2 and Embodiment 1 is that in this embodiment, the rotating shaft limit block 11 is arranged in the shape of a reverse symbol "," and the rotating shaft limit block 11 is just located above the limit pin 13;

[0023] When the pressing and rotating shaft continues to rotate, the rotating shaft limit block on its outer side will exactly buckle outside the limit pin. When the push rod of the oil cylinder 2 retracts, the tailgate tightening push rod 7 moves along the chute in the tailgate tightening push rod support leg 6, and the rotating shaft limit block 11 disengages from the limit pin 13. As the pressing and rotating shaft 10 rotates away from the limit pin 13, the closing pressing force of the tailgate 5 is gradually removed. When the tailgate tightening push rod 7 continues to retract along the chute in the tailgate tightening push rod support leg 6, along with the rotating shaft limit block 11 moving away from the limit pin 13 and no longer hooking, the tailgate 5 also starts to open with the continuous retraction of the push rod of the oil cylinder until the push rod of the oil cylinder 2 is fully retracted and the tailgate 5 is fully opened. At this time, the sweeper can be lifted for self-unloading, and the staff can clean the inside of the box.

[0024] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. A tailgate locking device for a sweeper, comprising a tailgate plate (1) and a cylinder (2), wherein the cylinder (2) is mounted above the tailgate plate (1) via cylinder legs, and characterized in that: The left and right ends of the upper part of the tailgate plate (1) are both fixed with hinge mounting legs (3), the lower parts of the hinge mounting legs (3) are both rotatably connected with tailgate hinge seats (4), the bottom of the tailgate hinge seats (4) is fixed with a tailgate (5), the middle part of the tailgate (5) is fixed with a tailgate tension push rod leg (6), the lower part of the middle part of the tailgate tension push rod leg (6) is connected with a tailgate tension push rod (7), and the push rod at the output end of the tailgate tension push rod (7) is A push rod connecting block (8) is fixedly connected to the bottom, a rotating shaft support leg (9) is fixed to the bottom of the tailgate (5), a clamping rotating shaft (10) is rotatably connected to the middle of the rotating shaft support leg (9) in a transverse manner, a rotating shaft limit block (11) is fixed to the left and right ends of the clamping rotating shaft (10), and a limit pin support leg (12) is fixed to the left and right ends of the bottom of the tailgate plate (1), and a limit pin (13) is transversely fixed to the middle of the limit pin support leg (12).

2. The tailgate locking device of a sweeper according to claim 1, characterized in that: A sliding groove is provided in the middle opening of the tailgate tension push rod support leg (6), and the tailgate tension push rod (7) slides up and down in the sliding groove of the tailgate tension push rod support leg (6).

3. The tailgate locking device of a sweeper according to claim 1, characterized in that: A sealing strip is fixed to the outer side of the rear end of the tailgate (5), and the outer side of the tailgate (5) and the sealing strip are both in close contact with the tailgate plate (1).

4. The tailgate locking device of a sweeper according to claim 1, characterized in that: The clamping rotating shaft (10) rotates forward and backward in the rotating shaft support leg (9), and the push rod connecting block (8) is just nested in the middle of the outer side of the clamping rotating shaft (10).

5. The tailgate locking device of a sweeper according to claim 1, characterized in that: The rotating shaft limit block (11) is arranged in the shape of a reverse symbol "", and the rotating shaft limit block (11) is located just above the limit pin (13).

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