A sewage suction truck rear door locking mechanism

Abstract

The utility model discloses a kind of sewage suction truck rear door locking mechanisms, including several locking fixing seats, several guide tubes, several plugs, several swing rods, a turntable and an oil cylinder, locking fixing seat is evenly distributed on the outer peripheral wall of sewage suction truck tank, guide tube is distributed on the outer peripheral wall of sewage suction truck rear door, plug sliding is arranged in the inside of guide tube, swing rod is evenly distributed on the outer periphery of turntable, and one end is articulated with plug, the other end is articulated with turntable, turntable is rotationally arranged on sewage suction truck rear door, one end of oil cylinder is articulated with sewage suction truck rear door, the other end is articulated with turntable;When oil cylinder is elongated, push turntable counterclockwise rotation, plug moves to the direction close to turntable, and separate with locking fixing seat;When oil cylinder is shortened, push turntable clockwise rotation, plug moves to the direction away from turntable, and is bolted with locking fixing seat.The utility model has the advantages that: when rear door is closed, sealing effect is good;Rear door locking and opening efficiency are high.

Description

Technical Field

[0001] This utility model relates to the field of sewage suction truck technology, specifically to a rear door locking mechanism for a sewage suction truck. Background Technology

[0002] In existing technology, the rear door of a typical vacuum truck is usually locked manually, and for ease of operation by workers, such as... Figure 1 and Figure 2 As shown, the rear door locking point P is usually installed in the lower part of the tank body 10 of the sewage suction truck. The rear door locking mechanism formed by this structure usually has the following problems: (1) there are few rear door locking points and they are unevenly distributed, resulting in poor rear door sealing effect; (2) the working efficiency is low when the rear door is locked and opened. Utility Model Content

[0003] In view of the problems in the background art, the purpose of this utility model is to provide a rear door locking mechanism for a sewage suction truck with good rear door sealing effect and high efficiency in locking and opening the rear door.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A locking mechanism for the rear door of a vacuum truck includes several locking seats, several guide tubes, several bolts, several rocker arms, a turntable, and a hydraulic cylinder. The locking seats are evenly distributed in a ring on the outer peripheral wall of the vacuum truck tank near the rear door. The guide tubes are evenly distributed in a ring on the outer peripheral wall of the rear door and correspond one-to-one with the locking seats. The bolts slide through the guide tubes. The rocker arms are evenly distributed in a ring on the outer periphery of the turntable, with one end of each rocker arm hinged to a bolt and the other end hinged to the turntable. The turntable is rotatably positioned on the side of the rear door away from the vacuum truck tank. One end of the hydraulic cylinder is hinged to the rear door and the other end is hinged to the turntable.

[0006] When the cylinder extends, it pushes the turntable to rotate counterclockwise. The bolt moves towards the turntable under the action of the turntable and the swing arm, and separates from the locking seat. At this time, the rear door of the vacuum truck can be opened.

[0007] When the hydraulic cylinder shortens, it pushes the turntable to rotate clockwise. The bolt moves away from the turntable under the action of the turntable and the swing arm, and is fastened to the locking seat. At this time, the rear door of the vacuum truck can be locked.

[0008] Furthermore, the turntable is rotatably mounted on the rear door of the vacuum truck via a turntable shaft.

[0009] Furthermore, the turntable shaft is fixedly mounted on the rear door of the vacuum truck, and the turntable is rotatably mounted on the turntable shaft.

[0010] Furthermore, the end of the hydraulic cylinder furthest from the turntable is hinged to the rear door of the vacuum truck via a cylinder seat.

[0011] Furthermore, the cylinder seat is fixedly mounted on the rear door of the vacuum truck, and the end of the cylinder away from the turntable is hinged to the cylinder seat.

[0012] Furthermore, one end of each guide tube is fixedly installed on the inner side of the outer peripheral wall of the rear door of the vacuum truck and corresponds to a locking fixing seat, while the other end is close to the turntable.

[0013] Furthermore, each of the aforementioned plugs has one end hinged to a corresponding rocker arm, and the other end slides through the guide tube, extending out of the guide tube and bolted to the corresponding locking seat when the cylinder shortens, and retracting into the guide tube and separating from the corresponding locking seat when the cylinder extends.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] (1) The rear door has multiple locking points that are evenly distributed on the outer periphery of the rear door, which makes the sealing effect good when the rear door is closed;

[0016] (2) The hydraulic cylinder extension and retraction motion replaces the manual operation of the rear door locking point, which greatly improves the working efficiency of locking and opening the rear door. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the locking mechanism of the rear door of an existing ordinary sewage suction truck;

[0019] Figure 2 This is a side view of the locking mechanism of the rear door of an existing ordinary sewage suction truck;

[0020] Figure 3 This is a three-dimensional schematic diagram of the rear door locking mechanism of the vacuum truck provided in this embodiment of the utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a side view of the rear door locking mechanism of the vacuum truck provided in this embodiment of the utility model;

[0023] Figure 6This is a front view of the locking mechanism of the rear door of the vacuum truck provided in this embodiment of the present invention in the locked state;

[0024] Figure 7 yes Figure 6 Enlarged view at point B in the middle;

[0025] Figure 8 This is a front view of the rear door locking mechanism of the vacuum truck provided in this embodiment of the present invention in the open state;

[0026] Figure 9 yes Figure 8 Enlarged view at point C;

[0027] Figure 10 This is a schematic diagram of the assembly of the guide tube and the rear door of the vacuum truck;

[0028] Figure 11 This is a structural diagram of the locking and fixing seat;

[0029] Figure 12 This is a schematic diagram of the bolt structure;

[0030] Explanation of reference numerals in the attached drawings: 1. Locking fixing seat; 2. Guide tube; 3. Bolt; 4. Swing rod; 5. Turntable; 6. Turntable shaft; 7. Hydraulic cylinder; 8. Hydraulic cylinder seat; 9. Rear door of the vacuum truck; 10. Vacuum truck tank. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the appearance of the term "horizontal" does not mean that the component is required to be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The present invention will be further described below with reference to the accompanying drawings:

[0036] See Figures 3 to 12 The diagram shows an embodiment of a locking mechanism for the rear door of a vacuum truck provided by this utility model. It includes several locking seats 1, several guide tubes 2, several bolts 3, several rocker arms 4, a turntable 5, and a hydraulic cylinder 7. The locking seats 1 are evenly distributed in a ring on the outer peripheral wall of the vacuum truck tank 10 near the rear door 9. The guide tubes 2 are evenly distributed in a ring on the outer peripheral wall of the rear door 9 and correspond one-to-one with the locking seats 1. The bolts 3 slide through the guide tubes 2 for bolting into the locking seats 1. The rocker arms 4 are evenly distributed in a ring on the outer periphery of the turntable 5, with one end of each rocker arm 4 hinged to a bolt 3 and the other end hinged to the turntable 5. The turntable 5 is rotatably positioned on the side of the rear door 9 away from the vacuum truck tank 10. One end of the hydraulic cylinder 7 is hinged to the rear door 9 and the other end is hinged to the turntable 5.

[0037] Specifically, when the hydraulic cylinder 7 extends, it pushes the turntable 5 to rotate counterclockwise. At the same time, the bolt 3 moves towards the turntable 5 under the action of the turntable 5 and the swing rod 4, thus separating from the locking seat 1. At this time, the rear door 9 of the vacuum truck will be loosely connected to the vacuum truck tank 10, and then the rear door 9 of the vacuum truck can be opened by the rear door opening cylinder (not shown in the figure). When the hydraulic cylinder 7 shortens, it pushes the turntable 5 to rotate clockwise. At the same time, the bolt 3 moves away from the turntable 5 under the action of the turntable 5 and the swing rod 4, thus fastening to the locking seat 1. At this time, the rear door 9 of the vacuum truck will be locked to the vacuum truck tank 10 by bolting the bolt 3 to the locking seat 1.

[0038] Specifically, in some embodiments, the turntable 5 is rotatably mounted on the rear door 9 of the vacuum truck via a turntable shaft 6. More specifically, the turntable shaft 6 is fixedly mounted (e.g., welded) on the rear door 9 of the vacuum truck, and the turntable 5 is rotatably sleeved on the turntable shaft 6. In use, the turntable 5 achieves rotatable connection with the rear door 9 of the vacuum truck through rotational engagement with the turntable shaft 6.

[0039] Specifically, in some embodiments, the end of the hydraulic cylinder 7 furthest from the turntable 5 is hinged to the rear door 9 of the vacuum truck via a cylinder seat 8. More specifically, the cylinder seat 8 is fixedly mounted (e.g., welded) to the rear door 9 of the vacuum truck, and the end of the hydraulic cylinder 7 furthest from the turntable 5 is hinged to the cylinder seat 8.

[0040] Specifically, in some embodiments, one end of each guide tube 2 is fixedly installed on the inner side of the outer peripheral wall of the rear door 9 of the vacuum truck and corresponds to a locking seat 1, while the other end is close to the turntable 5.

[0041] Specifically, in some embodiments, one end of each plug 3 is hinged to a rocker arm 4, and the other end slides through the guide tube 2. When the cylinder 7 shortens, the plug extends out of the guide tube 2 and is bolted to the corresponding locking seat 1. When the cylinder 7 extends, the plug retracts into the guide tube 2 and separates from the corresponding locking seat 1.

[0042] Finally, it should be noted that the above description is only an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A locking mechanism for the rear door of a vacuum truck, characterized in that: The system includes several locking and fixing seats (1), several guide tubes (2), several bolts (3), several swing rods (4), a turntable (5), and a hydraulic cylinder (7). The locking and fixing seats (1) are evenly distributed in a ring on the outer peripheral wall of the vacuum truck tank (10) near the rear door (9). The guide tubes (2) are evenly distributed in a ring on the outer peripheral wall of the rear door (9) and correspond one-to-one with the locking and fixing seats (1). The plug (3) slides through the inside of the several guide tubes (2), and the several swing rods (4) are evenly distributed in a ring on the outer periphery of the turntable (5). One end of each swing rod (4) is hinged to a plug (3), and the other end is hinged to the turntable (5). The turntable (5) is rotatably set on the side of the rear door (9) of the vacuum truck away from the vacuum truck tank (10). One end of the oil cylinder (7) is hinged to the rear door (9) of the vacuum truck, and the other end is hinged to the turntable (5). When the cylinder (7) extends, it pushes the turntable (5) to rotate counterclockwise. The bolt (3) moves towards the turntable (5) under the drive of the turntable (5) and the swing rod (4) and separates from the locking seat (1). At this time, the rear door (9) of the vacuum truck can be opened. When the cylinder (7) shortens, it pushes the turntable (5) to rotate clockwise. The bolt (3) moves away from the turntable (5) under the drive of the turntable (5) and the swing rod (4) and is fastened to the locking seat (1). At this time, the rear door (9) of the vacuum truck can be locked.

2. The rear door locking mechanism of the vacuum truck according to claim 1, characterized in that: The turntable (5) is rotatably mounted on the rear door (9) of the vacuum truck via the turntable shaft (6).

3. The locking mechanism for the rear door of the vacuum truck according to claim 2, characterized in that: The turntable shaft (6) is fixedly installed on the rear door (9) of the vacuum truck, and the turntable (5) is rotatably mounted on the turntable shaft (6).

4. The rear door locking mechanism of the vacuum truck according to claim 1, characterized in that: The end of the hydraulic cylinder (7) away from the turntable (5) is hinged to the rear door (9) of the vacuum truck via the hydraulic cylinder seat (8).

5. The rear door locking mechanism of the vacuum truck according to claim 4, characterized in that: The cylinder seat (8) is fixedly mounted on the rear door (9) of the vacuum truck, and the end of the cylinder (7) away from the turntable (5) is hinged to the cylinder seat (8).

6. The rear door locking mechanism of the vacuum truck according to claim 1, characterized in that: One end of each guide tube (2) is fixedly installed on the inner side of the outer peripheral wall of the rear door (9) of the vacuum truck and corresponds to a locking seat (1), while the other end is close to the turntable (5).

7. The rear door locking mechanism of the vacuum truck according to claim 1, characterized in that: Each of the aforementioned plugs (3) is hinged at one end to a rocker arm (4), and the other end slides through the guide tube (2), extends out of the guide tube (2) when the cylinder (7) shortens and is bolted to the corresponding locking seat (1), and retracts into the guide tube (2) when the cylinder (7) extends and is separated from the corresponding locking seat (1).

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