A sewage suction truck with a lifting tank and a linkage locking mechanism between the auxiliary frame

Abstract

The present invention relates to the technical field of sewage suction vehicles, and specifically to a sewage suction vehicle with a linkage locking mechanism for a lifting tank body and a sub-frame. The present invention comprises a vehicle chassis and a tank body, wherein a sub-frame is fixedly mounted on the vehicle chassis, and the tail end of the tank body is hingedly mounted between the sub-frame and the sub-frame through a hinged seat at the tail end of the tank body sub-frame; a locking mechanism is arranged between the sub-frame and the tank body; the locking mechanism comprises a jacking assembly and a locking assembly, wherein the jacking assembly is mounted between the bottom of the tank body and the sub-frame, and the locking assembly is fixedly mounted on the lower part of the tank body and is transmission-connected to the jacking assembly; a locking plate used in conjunction with the locking assembly is fixedly mounted on the sub-frame crossbeam of the sub-frame; in the locking mechanism of the present invention, the tank body can be further locked and limited during transportation through the arrangement of the jacking assembly and the locking assembly, thereby effectively improving the connection stability between the tank body and the sub-frame.

Description

Technical Field

[0001] The invention relates to the technical field of sewage suction vehicles, in particular to a sewage suction vehicle with a lifting tank body and a linkage locking mechanism of a sub-frame. Background Art

[0002] Sewage suction trucks are mainly used for the suction and cleaning of sludge and sewage in rainwater wells, sedimentation wells and ditches. They are also suitable for the suction, transfer and discharge of wastewater and sediment in industries such as oil refining, steel, chemical industry, coal and sewage treatment plants.

[0003] Usually, the type of sewage suction truck is mainly tank truck. The tank body adopts the lifting type unloading form. The tank body is hinged to the rear end of the subframe, and the lifting hydraulic cylinder is arranged at the bottom or side. The locking of the tank body and the subframe is only connected by the hydraulic cylinder and the rear hinge point. The rear hinge point can limit the inertial impact of the rear of the tank body and the subframe in the front, back, left and right directions.

[0004] However, the up and down inertial impact of the tank body is mainly limited by the tank body's own weight and the oil port closure of the hydraulic cylinder. On unpaved, bumpy and complex terrain or similar roads, the tank body contains liquid sewage or sludge, which is affected by the bumpy road surface and will cause the tank body to bounce up and down. The locking of the hydraulic cylinder is achieved by oil closure. There is an active gap between the piston and the cylinder barrel of the hydraulic cylinder, which causes internal leakage of oil and internal leakage of the hydraulic slide valve. This leads to the inevitable loosening of the connection between the tank body and the subframe when relying on the hydraulic cylinder locking, resulting in unstable vehicle operation, shift of the center of gravity and the risk of rollover. Summary of the invention

[0005] The object of the present invention is to provide a sewage suction truck having a lifting tank body and a linkage locking mechanism with a sub-frame, so as to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A sewage suction truck with a lifting tank body and a linkage locking mechanism for a sub-frame, comprising a vehicle chassis and a tank body, wherein the sub-frame is fixedly mounted on the vehicle chassis, and a tank body bracket and a tank body sub-frame pad for supporting the tank body are respectively arranged at positions near both ends of the sub-frame, and the rear end of the tank body is hingedly mounted between the sub-frame and the tank body through a hinged seat at the rear of the tank body sub-frame; a locking mechanism is arranged between the sub-frame and the tank body;

[0008] The locking mechanism comprises a lifting assembly and a locking assembly, wherein the lifting assembly is installed between the bottom of the tank body and the sub-frame, and the locking assembly is fixedly installed at the lower part of the tank body and is transmission-connected with the lifting assembly;

[0009] A locking plate used in conjunction with a locking assembly is fixedly mounted on the sub-frame cross beam of the sub-frame, and a clamping slot hole is provided on the upper portion of the locking plate.

[0010] Further, the lifting assembly includes a lifting cylinder upper hinge seat and a lifting cylinder lower hinge seat, the lifting cylinder upper hinge seat is fixedly installed at the middle position of the bottom of the tank body, the lifting cylinder lower hinge seat is fixedly installed on the top surface of the sub-frame, and the lifting cylinder lower hinge seat is located between the lifting cylinder upper hinge seat and the rear hinge seat of the tank body sub-frame;

[0011] A lifting cylinder is installed between the lifting cylinder upper hinge seat and the lifting cylinder lower hinge seat, and the two ends of the lifting cylinder are respectively hinged to the tank body and the auxiliary frame through the lifting cylinder upper hinge seat and the lifting cylinder lower hinge seat;

[0012] The pin shaft hole of the upper hinge seat lifted by the lifting cylinder is a sliding hole structure.

[0013] Furthermore, the locking assembly includes a lock hook slide rail connecting crossbeam fixedly mounted on the bottom of the tank body, the lock hook slide rail connecting crossbeam is located at one end away from the rear hinge seat of the tank body sub-frame, a lock hook slide rail is fixedly mounted on the lock hook slide rail connecting crossbeam, a lock hook arranged parallel to the length direction of the tank body is slidably mounted in the lock hook slide rail, the tail end of the lock hook is located between the lock hook slide rail and the lifting upper hinge seat of the lifting oil cylinder, and the tail end of the lock hook is hinged with a connecting rod, the end of the connecting rod away from the lock hook extends to the lifting upper hinge seat of the lifting oil cylinder, and the pin shaft in the lifting upper hinge seat of the lifting oil cylinder is through-rotatably connected with the connecting rod;

[0014] When the tank body is in a locked state, the hook portion of the lock hook is hooked in the clamping slot of the locking plate.

[0015] Furthermore, a spring top plate is fixedly installed on the bottom of the tank body at one end away from the rear hinged seat of the tank body sub-frame, and a spring is fixedly connected between the spring top plate and the hook end of the locking hook.

[0016] Furthermore, limit clamps are installed on both sides of the sub-frame.

[0017] Furthermore, two mounting holes are provided at the lower portion of the locking plate, and the locking plate is fixedly connected to the sub-frame cross beam by mounting bolts in the mounting holes, and the mounting holes are sliding hole structures.

[0018] Furthermore, a grease nipple is installed on the lock hook slide rail.

[0019] Furthermore, a sewage suction truck having a lifting tank body and a linkage locking mechanism between a sub-frame also includes an alarm component, the alarm component including a controller, a first inclination sensor, a second inclination sensor, a first induction switch arranged on a rear cover of the tank body, a second induction switch arranged on a locking plate, and a speaker;

[0020] The inclination sensor 1 is installed on the tank bracket and is used to measure the angle of the tank when it is unloading and lifting;

[0021] The second inclination sensor is installed on the chassis of the vehicle and is used to calibrate the level of the vehicle during the sewage suction operation and the unloading operation;

[0022] The controller is electrically connected to the lifting assembly, the first inclination sensor, the second inclination sensor, the first induction switch, the second induction switch and the speaker.

[0023] Beneficial effects of the present invention:

[0024] 1. The locking mechanism of the present invention can ensure the normal lifting and lowering of the tank body by means of the arrangement of the lifting assembly and the locking assembly, and can also further lock and limit the tank body during transportation, thereby effectively improving the connection stability between the tank body and the subframe, and preventing the vehicle from rolling over due to the shift of the center of gravity caused by the instability of the tank body when driving on a bumpy road.

[0025] 2. The setting of the spring can reduce the possibility of loosening and unhooking between the lock hook and the locking plate in the locked state, thereby improving the stability of the locked state between the tank body and the subframe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 : A schematic diagram of the overall structure of the present invention;

[0028] Figure 2 : A schematic diagram of the structure of the lifting cylinder in the present invention lifting the hinged seat;

[0029] Figure 3 : A three-dimensional schematic diagram of the connection relationship between the locking hook and the connecting rod in the present invention;

[0030] Figure 4 : A structural diagram of the connection relationship between the lock hook and the spring in the present invention;

[0031] Figure 5: A three-dimensional schematic diagram of the lock hook slide rail in the present invention;

[0032] Figure 6 : A structural diagram of the relationship between the limit card plate and the auxiliary frame in the present invention;

[0033] Figure 7 : A three-dimensional schematic diagram of the locking plate in the present invention.

[0034] The reference numerals are as follows:

[0035] 1. Automobile chassis; 2. Subframe; 3. Tank; 5. Tank bracket; 6. Spring top plate; 7. Spring; 8. Subframe crossbeam; 9. Locking plate; 10. Lock hook; 11. Connecting rod; 12. Lock hook slide rail; 13. Lock hook slide rail connecting crossbeam; 14. Lifting cylinder top hinge seat; 17. Lifting cylinder; 18. Tank subframe pad; 19. Tank subframe tail hinge seat; 20. Lifting cylinder lower hinge seat; 21. Limiting card plate; 22. Grease nozzle; 23. Mounting hole; 24. Clamping slot hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] See also Figures 1 to 7 In an embodiment of the present invention, a sewage suction truck with a lifting tank body and a linkage locking mechanism of a sub-frame comprises a vehicle chassis 1 and a tank body 3, a sub-frame 2 is fixedly mounted on the vehicle chassis 1, a tank body bracket 5 and a tank body sub-frame pad 18 for supporting the tank body 3 are respectively arranged on the sub-frame 2 at positions near both ends, and the rear end of the tank body 3 is hingedly mounted between the sub-frame 2 through a rear hinge seat 19 of the tank body sub-frame; a locking mechanism is arranged between the sub-frame 2 and the tank body 3;

[0039] The locking mechanism includes a lifting assembly and a locking assembly. The lifting assembly is installed between the bottom of the tank body 3 and the sub-frame 2. The locking assembly is fixedly installed at the lower part of the tank body 3 and is transmission-connected with the lifting assembly.

[0040] A locking plate 9 used in conjunction with a locking assembly is fixedly mounted on the sub-frame cross beam 8 of the sub-frame 2 , and a clamping slot 24 is provided on the upper portion of the locking plate 9 .

[0041] The lifting assembly includes a lifting cylinder upper hinge seat 14 and a lifting cylinder lower hinge seat 20. The lifting cylinder upper hinge seat 14 is fixedly mounted at the middle position of the bottom of the tank body 3, and the lifting cylinder lower hinge seat 20 is fixedly mounted on the top surface of the sub-frame 2. The lifting cylinder lower hinge seat 20 is located between the lifting cylinder upper hinge seat 14 and the tank body sub-frame tail hinge seat 19.

[0042] A lifting cylinder 17 is installed between the lifting cylinder upper hinge seat 14 and the lifting cylinder lower hinge seat 20. The two ends of the lifting cylinder 17 are respectively hinged to the tank body 3 and the sub-frame 2 through the lifting cylinder upper hinge seat 14 and the lifting cylinder lower hinge seat 20;

[0043] The pin hole of the upper hinge seat 14 lifted by the lifting cylinder is a sliding hole structure, so that the lifting cylinder 17 drives the pin to slide upward and forward first, and then slides to the top to lift the tank body 3.

[0044] The locking assembly includes a lock hook slide rail connecting beam 13 fixedly mounted on the bottom of the tank body 3, the lock hook slide rail connecting beam 13 is located at one end away from the rear hinge seat 19 of the tank body subframe, a lock hook slide rail 12 is fixedly mounted on the lock hook slide rail connecting beam 13, a lock hook 10 arranged parallel to the length direction of the tank body 3 is slidably mounted in the lock hook slide rail 12, the tail end of the lock hook 10 is located between the lock hook slide rail 12 and the lifting cylinder top hinge seat 14, and the tail end of the lock hook 10 is hinged with a connecting rod 11, the end of the connecting rod 11 away from the lock hook 10 extends to the lifting cylinder top hinge seat 14, and the pin shaft in the lifting cylinder top hinge seat 14 is through-rotatably connected with the connecting rod 11;

[0045] When the tank body 3 is in a locked state, the hook portion of the lock hook 10 is hooked into the clamping slot 24 of the locking plate 9;

[0046] The lock hook slide rail 12 guides and limits the lock hook 10, so that the lock hook 10 is parallel to the frame, and the locking force of the lock hook 10 can be transmitted to the lock hook slide rail 12 when the lock is tightened.

[0047] When the present invention is used:

[0048] When the tank body 3 is lifted, the lifting cylinder 17 extends. At the beginning, the lifting cylinder 17 drives the locking hook 10 to push the connecting rod 11 forward under the guidance of the pin shaft hole of the hinge seat 14 on the lifting cylinder top, so that the locking hook 10 is separated from the clamping slot 24 on the locking plate 9, and then the lifting cylinder 17 lifts the tank body 3 again; on the contrary, the lifting cylinder 17 contracts and the tank body 3 falls. When the tank body 3 is in place, the locking hook 10 drives the connecting rod 11 to return to the hooked state with the clamping slot 24, thereby locking the tank body 3 and the subframe 2.

[0049] Therefore, the locking mechanism of the present invention can ensure the normal lifting and lowering of the tank body 3 through the arrangement of the lifting assembly and the locking assembly, while further locking and limiting the tank body 3 during transportation, thereby effectively improving the connection stability between the tank body 3 and the subframe 2, and preventing the vehicle from rolling over due to the shift of the center of gravity caused by the instability of the tank body 3 when driving on a bumpy road.

[0050] Embodiment 2:

[0051] See also Figure 1 and Figure 4 On the basis of Example 1, a spring top plate 6 is fixedly installed on the bottom of the tank body 3 at one end away from the rear hinge seat 19 of the tank body sub-frame, and a spring 7 is fixedly connected between the spring top plate 6 and the hook end of the lock hook 10; the arrangement of the spring 7 can reduce the possibility of loosening and unhooking between the lock hook 10 and the locking plate 9 in the locked state, thereby improving the stability of the locked state between the tank body 3 and the sub-frame 2.

[0052] Embodiment 3:

[0053] See also Figure 6 On the basis of Example 1, limiting clamps 21 are installed on both sides of the sub-frame 2. The setting of the limiting clamps 21 can overcome the impact torque caused by the left and right swing of the tank body 3 and the front end of the sub-frame 2 on the lifting cylinder 17 and the rear hinge seat 19 of the tank body sub-frame.

[0054] Implementation:4:

[0055] See also Figure 7 On the basis of Example 1, two mounting holes 23 are provided at the lower part of the locking plate 9. The locking plate 9 is fixedly connected to the subframe cross beam 8 by mounting bolts in the mounting holes 23. The mounting holes 23 are sliding hole structures. The sliding hole structure of the mounting holes 23 can adjust the working height of the clamping slot 24 to overcome the manufacturing deviation between the components, which causes the lock hook 10 and the locking plate 9 to not fit tightly or cannot be locked.

[0056] Implementation:5:

[0057] See also Figure 5 On the basis of Example 1, a grease nipple 22 is installed on the lock hook slide rail 12, and grease can be added through the grease nipple 22 for lubrication to prevent dry grinding.

[0058] Implementation 6:

[0059] On the basis of Example 1, a sewage suction truck having a lifting tank body and a linkage locking mechanism of a sub-frame further includes an alarm component, the alarm component includes a controller, a first inclination sensor, a second inclination sensor, a first induction switch arranged on the rear cover of the tank body 3, a second induction switch arranged on the locking plate 9, and a speaker;

[0060] The inclination sensor 1 is installed on the tank bracket 5 and is used to measure the angle of the tank 3 when it is unloading and lifted;

[0061] The second inclination sensor is installed on the vehicle chassis 1 and is used to calibrate the level of the vehicle during the sewage suction operation and the unloading operation;

[0062] The controller is electrically connected to the lifting assembly, the first inclination sensor, the second inclination sensor, the first induction switch, the second induction switch and the speaker.

[0063] After the tank 3 is lowered, when the lock hook 10 is fully inserted into the locking plate 9 and the vehicle is firmly locked, the proximity sensor switch 2 is activated and the speaker prompts that the locking of the tank 3 is completed; when the tank 3 is lifted, the lock hook 10 is disengaged, and the sensor switch 2 sends a signal to the controller, causing the speaker to prompt the driver to pay attention to safety during the lifting of the tank, and turns on the side and rear warning lights of the vehicle to remind the driver to pay attention to safety;

[0064] When the levelness of the vehicle and the cumulative lifting inclination angle of the vehicle levelness and tank body 3 exceed the safety angle set by the system, the controller controls the lifting component to remain in a closed state or controls the lifting component to lift the tank body 3 to a safe range value and then stop lifting; when the tank body 3 needs to be lifted for unloading, if the rear cover of the tank body 3 is not opened first, the controller will control the speaker to remind that it is strictly forbidden to lift the tank body without opening the rear cover. When the tank body 3 returns to its original position after unloading, if the rear cover is not closed in time, the controller will receive a rear cover sensing switch signal within the set time after the tank body returns to its original position, and will control the speaker to remind you to close the rear cover.

[0065] The controller can use PLC (Programmable Logic Controller), which can control the cylinder with the inclination sensor and the induction switch, and make the speaker give corresponding prompts. The application of this technology can be found in many fields, such as industrial automation, robot control, smart home, etc. It is an existing technology.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A sewage suction vehicle having a lifting tank body and a linkage locking mechanism between a sub-frame, comprising a vehicle chassis (1) and a tank body (3), wherein a sub-frame (2) is fixedly mounted on the vehicle chassis (1), and a tank body bracket (5) and a tank body sub-frame pad (18) for supporting the tank body (3) are respectively arranged on the sub-frame (2) at positions close to both ends, and the rear end of the tank body (3) is hingedly mounted on the sub-frame (2) via a rear hinge seat (19) of the tank body sub-frame; characterized in that: A locking mechanism is provided between the auxiliary frame (2) and the tank body (3); The locking mechanism comprises a lifting assembly and a locking assembly, the lifting assembly being mounted between the bottom of the tank body (3) and the auxiliary frame (2), the locking assembly being fixedly mounted on the lower part of the tank body (3) and being transmission-connected to the lifting assembly; A locking plate (9) used in conjunction with a locking assembly is fixedly mounted on the sub-frame crossbeam (8) of the sub-frame (2), and a snap-fitting slot (24) is provided on the upper portion of the locking plate (9); The lifting assembly comprises a lifting cylinder upper hinge seat (14) and a lifting cylinder lower hinge seat (20), wherein the lifting cylinder upper hinge seat (14) is fixedly mounted at the middle position of the bottom of the tank body (3), and the lifting cylinder lower hinge seat (20) is fixedly mounted on the top surface of the sub-frame (2), and the lifting cylinder lower hinge seat (20) is located between the lifting cylinder upper hinge seat (14) and the tank body sub-frame tail hinge seat (19); A lifting cylinder (17) is installed between the lifting cylinder upper hinge seat (14) and the lifting cylinder lower hinge seat (20), and the two ends of the lifting cylinder (17) are respectively hinged to the tank body (3) and the auxiliary frame (2) through the lifting cylinder upper hinge seat (14) and the lifting cylinder lower hinge seat (20); The pin hole of the upper hinge seat (14) of the lifting cylinder is a sliding hole structure; The locking assembly comprises a lock hook slide rail connecting crossbeam (13) fixedly mounted on the bottom of the tank body (3), the lock hook slide rail connecting crossbeam (13) being located at one end away from the rear hinged seat (19) of the tank body subframe, a lock hook slide rail (12) being fixedly mounted on the lock hook slide rail connecting crossbeam (13), a lock hook (10) being slidably mounted in the lock hook slide rail (12) and arranged parallel to the length direction of the tank body (3), the rear end of the lock hook (10) being located between the lock hook slide rail (12) and the lifting cylinder upper hinged seat (14), and a connecting rod (11) being hingedly connected to the rear end of the lock hook (10), the connecting rod (11) extending from one end of the lock hook (10) to the lifting cylinder upper hinged seat (14), and a pin shaft in the lifting cylinder upper hinged seat (14) and the connecting rod (11) being through-connected and rotatably connected; When the tank body (3) is in a locked state, the hook portion of the locking hook (10) is hooked into the clamping slot (24) of the locking plate (9).

2. A sewage suction truck with a lifting tank body and a linkage locking mechanism between the sub-frame according to claim 1, characterized in that: A spring top plate (6) is fixedly mounted on the bottom of the tank body (3) at one end away from the rear hinge seat (19) of the tank body subframe, and a spring (7) is fixedly connected between the spring top plate (6) and the hook end of the locking hook (10).

3. The sewage suction truck with a lifting tank body and a linkage locking mechanism between the sub-frame according to claim 1 is characterized in that: Limiting clamping plates (21) are installed on both sides of the auxiliary frame (2).

4. The sewage suction truck with a lifting tank body and a linkage locking mechanism between the sub-frame according to claim 1 is characterized in that: Two mounting holes (23) are provided at the lower portion of the locking plate (9); the locking plate (9) is fixedly connected to the subframe crossbeam (8) by mounting bolts in the mounting holes (23); the mounting holes (23) are of a sliding hole structure.

5. The sewage suction truck with a lifting tank body and a linkage locking mechanism between the sub-frame according to claim 1 is characterized in that: A grease nipple (22) is installed on the lock hook slide rail (12).

6. The sewage suction truck with a lifting tank body and a linkage locking mechanism between the sub-frame according to claim 1 is characterized in that: It also includes an alarm component, the alarm component including a controller, a first inclination sensor, a second inclination sensor, a first induction switch arranged on the rear cover of the tank body (3), a second induction switch arranged on the locking plate (9), and a speaker; The inclination sensor 1 is mounted on the tank bracket (5) and is used to measure the angle of the tank when it is lifted during unloading; The second inclination sensor is mounted on the vehicle chassis (1) and is used to calibrate the horizontality of the vehicle during sewage suction and unloading operations; The controller is electrically connected to the lifting assembly, the first inclination sensor, the second inclination sensor, the first induction switch, the second induction switch and the speaker.

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