Tank cover opening and closing locking device, sewage suction tank and sewage suction vehicle

Abstract

The application discloses a tank cover opening and closing locking device, a sewage suction tank and a sewage suction vehicle. The tank cover opening and closing locking device comprises a tank cover, an opening and closing mechanism, a first locking mechanism, a second locking mechanism, a locking detection assembly and a controller. The tank cover is arranged on a tank body. The opening and closing mechanism drives the tank cover to overturn to open or close a tank opening. The first locking mechanism is arranged on the tank body and locks or unlocks the tank cover. The second locking mechanism is arranged on the tank body and delays locking or unlocking the tank cover after the first locking mechanism. The locking detection assembly can detect the unlocking action of the second locking mechanism. The controller is configured to control the opening and closing mechanism to drive the tank cover to open when a detection signal of unlocking in place is received. The above arrangement can realize the sequential control of the locking mechanism and the opening and closing mechanism without a hydraulic sequence valve during the control process of unlocking the cover, so that the tank cover opening and closing locking is not affected by the environmental temperature, and the reliability of the action sequence is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of can lid opening and closing locking technology, specifically relating to a can lid opening and closing locking device, a sewage suction tank, and a sewage suction truck. Background Technology

[0002] Vacuum trucks are used to collect, transfer, clean, and transport sludge and sewage from urban or residential sewers. After suctioning the sludge, it needs to be transported to a designated discharge point. Therefore, in order to avoid environmental pollution during transportation, the sealing requirements of the tank lid are very high.

[0003] Most current vacuum trucks are tank trucks, with the tank cover and tank body connected by a hinge, allowing the cover to open and close freely. The opening and closing of the cover is driven by a hydraulic cylinder. To ensure a reliable seal between the cover and tank body, multiple pins or other locking mechanisms ensure the cover fits tightly against the tank body when closed. However, in existing technologies, the operation of the hydraulic cylinders and pin cylinders is controlled by a hydraulic sequence valve. The viscosity of hydraulic oil is greatly affected by ambient temperature, which can disrupt the hydraulic sequence and cause malfunctions. Summary of the Invention

[0004] To address the aforementioned defects or deficiencies, this invention provides a can lid opening and closing locking device, a sludge suction tank, and a sludge suction truck, aiming to solve the technical problem that the hydraulic sequence valve controlling the opening and closing cylinder and the pin cylinder is easily affected by ambient temperature, causing erratic operation.

[0005] To achieve the above objectives, a first aspect of the present invention provides a can lid opening and closing locking device, wherein the can lid opening and closing locking device includes a can lid, an opening and closing mechanism, a first locking mechanism, a second locking mechanism, a locking detection component, and a controller; the can lid is disposed on a can body; the opening and closing mechanism is used to drive the can lid to flip open or close the can opening; the first locking mechanism is disposed on the can body and is used to lock or unlock the can lid; the second locking mechanism is disposed on the can body at a distance from the first locking mechanism and is used to delay locking or unlocking the can lid after the first locking mechanism; the locking detection component is used to detect the unlocking action of the second locking mechanism; the controller is communicatively connected to the locking detection component and configured to: upon receiving a detection signal indicating that the can lid has been unlocked, control the opening and closing mechanism to drive the can lid to open.

[0006] In this embodiment of the invention, both the first locking mechanism and the second locking mechanism include a locking cylinder disposed on the tank body and a pin connected to the piston rod end of the locking cylinder. The tank cover is formed with a first pin port and a second pin port for the pins of the first locking mechanism and the second locking mechanism to extend into or retract in a corresponding manner. The locking cylinder of the second locking mechanism is provided with a damping body for delaying the action of the cylinder.

[0007] In this embodiment of the invention, the side of the pin facing the tank body is provided with a wedge-shaped surface, which is used to gradually press the tank cover onto the tank body.

[0008] In this embodiment of the invention, the can lid is provided with a locking pin assembly, which includes a locking pin mounting seat and a locking pin body. The locking pin mounting seat is located on the periphery of the can lid, and the locking pin body is adjustablely located on the locking pin mounting seat and has a corresponding pin opening.

[0009] In this embodiment of the invention, the locking pin body is provided with an elongated mounting hole, and the mounting hole extends along the direction perpendicular to the sealing surface of the can lid. The locking pin body is detachably connected to the locking pin mounting seat by fasteners passing through the mounting hole.

[0010] In this embodiment of the invention, the locking pin mounting base includes two clamping lugs spaced apart circumferentially on the periphery of the can lid. The locking pin body includes an end fixing section, a side fixing section, and a locking section. The side fixing section is located between the two clamping lugs and has a mounting hole. A fastener passes through the mounting hole and is connected in series with the two clamping lugs. The end fixing section is located at the end of the side fixing section away from the can body and extends out of the two clamping lugs. The locking pin assembly also includes a locking nut that is threaded to the end fixing section and abuts against the two clamping lugs. The locking section is located at the end of the side fixing section facing the can body and extends out of the two clamping lugs. A corresponding pin opening is provided on the locking section.

[0011] In this embodiment of the invention, the locking pin mounting base further includes an intermediate connecting plate connecting the outer ends of the two clamping ear plates, and the intermediate connecting plate is also provided with a set screw for abutting against the lateral fixing section.

[0012] In this embodiment of the invention, the can lid opening and closing locking device further includes a sliding hinge assembly. The first end of the sliding hinge assembly is movably disposed on the can body, and the second end of the sliding hinge assembly extends out. The can lid is installed on the second end of the sliding hinge assembly so as to be flipped open or closed. The moving direction of the sliding hinge assembly is set in the same direction as the extension and retraction driving direction of the opening and closing mechanism, so that the opening and closing mechanism can sequentially perform the flipping closing action and the sliding closing action when driving the can body to close.

[0013] In this embodiment of the invention, the locking detection component is further used to detect the locking action of the second locking mechanism, and the can lid opening and closing locking device further includes an opening and closing detection component for detecting the flipping and closing action of the can lid. The controller is also communicatively connected to the opening and closing detection component and configured as follows:

[0014] Upon receiving a detection signal indicating that the lid has been flipped and closed, the first and second locking mechanisms are controlled to lock the lid.

[0015] Upon receiving a detection signal indicating that the locking mechanism is in place, the control mechanism, the first locking mechanism, and the second locking mechanism are stopped.

[0016] In this embodiment of the invention, a sliding support seat is provided on the tank body, and a hinged connecting seat is provided on the tank cover. The sliding hinge assembly includes a sliding mounting member and a hinge shaft. The sliding mounting member is movably mounted on the sliding support seat, and the moving direction of the sliding mounting member is set in the same direction as the telescopic driving direction of the opening and closing mechanism. The end of the sliding mounting member away from the tank cover extends out of the sliding support seat and is provided with a limiting part for abutting against the sliding support seat. The end of the sliding mounting member near the tank cover extends out of the sliding support seat and is provided with a rotating part forming a fitting through hole. The hinge shaft passes through the fitting through hole and is fixedly connected to the hinged connecting seat.

[0017] In this embodiment of the invention, the locking detection component includes a locking trigger, an unlocking proximity switch, and a locking proximity switch. The unlocking proximity switch and the locking proximity switch are sequentially spaced along the extension path of the pin of the second locking mechanism. The locking trigger is located on the pin of the second locking mechanism and can move between the unlocking proximity switch and the locking proximity switch. The locking trigger is used to trigger the unlocking proximity switch when it is unlocked and to trigger the locking proximity switch when it is locked. The controller is communicatively connected to the unlocking proximity switch and the locking proximity switch, respectively.

[0018] In this embodiment of the invention, the can lid opening and closing locking device further includes a manual controller, which is used to obtain an open button and a close button to control the action of the opening and closing mechanism, as well as a lock button and an unlock button to control the action of the first locking mechanism and the second locking mechanism.

[0019] And / or, a sealing strip is provided on the sealing surface of either the tank body or the tank lid, and the sealing strip is designed to be hollow.

[0020] To achieve the above objectives, a second aspect of the present invention provides a sludge suction tank, wherein the sludge suction tank includes a tank body and a lid opening and closing locking device as described above.

[0021] To achieve the above objectives, a third aspect of the present invention provides a vacuum truck, wherein the vacuum truck includes a vacuum tank as described above.

[0022] Through the above technical solution, the can lid opening and closing locking device provided in the embodiments of the present invention has the following beneficial effects:

[0023] When using the aforementioned can lid opening and closing locking device, which includes a can lid, an opening and closing mechanism, a first locking mechanism, a second locking mechanism, a locking detection component, and a controller, the opening and closing mechanism can drive the can lid to flip open or close the can opening on the can body. Both the first and second locking mechanisms can lock or unlock the can lid on the can body. The second locking mechanism is designed for delayed locking and unlocking, meaning that the locking and unlocking of the can lid by the second locking mechanism is later than that by the first locking mechanism. Therefore, by adding a locking detection component to detect the unlocking action of the second locking mechanism, it is possible to determine whether both the first and second locking mechanisms have completed the unlocking action. When the controller receives the unlocking detection signal sent by the locking detection component, it then controls the opening and closing mechanism to drive the can lid to open. The above settings enable the sequential control of the locking mechanism and the opening and closing mechanism to be achieved without the need to add a hydraulic sequence valve during the unlocking and opening control process. This ensures that the sequential control of the can lid opening and closing is not affected by the ambient temperature, and the reliability of its action sequence is guaranteed.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the can lid opening and closing locking device from one perspective according to an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0028] Figure 3 This is a schematic diagram of the structure of the locking pin assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the locking pin according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the pin component according to an embodiment of the present invention;

[0031] Figure 6 This is a partial structural schematic diagram of a can lid opening and closing locking device from one perspective according to an embodiment of the present invention;

[0032] Figure 7 yes Figure 6 Enlarged structural diagram at point B;

[0033] Figure 8 This is a schematic diagram of the installation structure of the sliding hinge assembly according to another embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of a hydraulic drive system according to an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures

[0036] 100 Tank body 110 Sliding support base

[0037] 200 Can lid 210 Locking pin assembly

[0038] 220 Locking pin mounting base; 221 Clamping ear plate

[0039] 222 Intermediate connecting plate 223 Set screw component

[0040] 230 Locking pin body 231 End-fixed section

[0041] 232 Lateral fixing section 233 Socket locking section

[0042] 234 Mounting hole 235 Pin socket

[0043] 240 Fasteners 250 Locknuts

[0044] 260 Hinged connector 300 Opening and closing mechanism

[0045] 310 Opening and closing hydraulic cylinder 400a First locking mechanism

[0046] 400b Second locking mechanism 410 Locking cylinder

[0047] 420 Pin part; 421 Wedge-shaped surface

[0048] 430 Damping body 500 Locking detection assembly

[0049] 510 Unlock proximity switch 520 Lock proximity switch

[0050] 600 Sliding Hinge Assembly 610 Sliding Mounting Part

[0051] 611 Limiting part; 612 Rotating part

[0052] 620 Hinged Shaft 700 Closed Proximity Switch

[0053] 800 Oil supply device 810 Locking directional valve

[0054] 820 Reversing valve for opening and closing; 830 Oil tank

[0055] 840 gear pump, 850 power take-off unit

[0056] 860 Relief hydraulic device; 861 Relief directional valve

[0057] 862 Overflow Valve Detailed Implementation

[0058] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0059] The following description, with reference to the accompanying drawings, describes the can lid opening and closing locking device, the suction can, and the suction truck of the present invention.

[0060] like Figure 1 and Figure 2 As shown, the first aspect of the present invention provides a can lid opening and closing locking device, wherein the can lid opening and closing locking device includes:

[0061] A lid 200 is mounted on the tank body 100;

[0062] The opening and closing mechanism 300 is used to drive the can lid 200 to flip open or close the can opening;

[0063] The first locking mechanism 400a is provided on the tank body 100 and is used to lock or unlock the tank lid 200.

[0064] The second locking mechanism 400b is disposed on the tank body 100 at a distance from the first locking mechanism 400a and is used to delay locking or unlocking the tank lid 200 after the first locking mechanism 400a.

[0065] The locking detection component 500 is used to detect the unlocking action of the second locking mechanism 400b;

[0066] The controller is communicatively connected to the locking detection component 500 and configured as follows:

[0067] Upon receiving a detection signal indicating that the lock is in place, the control mechanism 300 drives the can lid 200 to open.

[0068] When the aforementioned can lid opening and closing locking device is used, since it includes a can lid 200, an opening and closing mechanism 300, a first locking mechanism 400a, a second locking mechanism 400b, a locking detection component 500, and a controller, the opening and closing mechanism 300 can drive the can lid 200 to flip open or close the can opening on the can body 100. Both the first locking mechanism 400a and the second locking mechanism 400b can lock or unlock the can lid 200 on the can body 100. Furthermore, the second locking mechanism 400b is configured for delayed locking and unlocking, meaning that the locking and unlocking of the can lid 200 by the second locking mechanism 400b is later than the locking and unlocking of the can lid 200 by the first locking mechanism 400a. The lock can be controlled by adding a locking detection component 500 to detect the unlocking action of the second locking mechanism 400b. This will determine whether both the first locking mechanism 400a and the second locking mechanism 400b have completed the unlocking action. When the controller receives the unlocking detection signal sent by the locking detection component 500, it will then control the opening and closing mechanism 300 to drive the can lid 200 to open. This configuration allows for sequential control of the locking mechanism and the opening and closing mechanism 300 without the need for an additional hydraulic sequence valve during the unlocking and opening process. This ensures that the sequential control is not affected by ambient temperature and guarantees the reliability of the action sequence.

[0069] See Figures 1 to 4 In this embodiment of the invention, both the first locking mechanism 400a and the second locking mechanism 400b include a locking cylinder 410 disposed on the tank body 100 and a pin 420 connected to the piston rod end of the locking cylinder 410. The tank cover 200 has a first pin port and a second pin port for the pins 420 of the first locking mechanism 400a and the second locking mechanism 400b to extend into or retract in a corresponding manner. That is, when the piston rod end of the locking cylinder 410 extends out, it can drive the pin 420 to extend into the corresponding pin port 235 to complete the locking action; when the piston rod end of the locking cylinder 410 retracts, it can drive the pin 420 to retract from the corresponding pin port 235 to complete the unlocking action. In addition, the locking cylinder 410 of the second locking mechanism 400b is provided with a damping body 430 for delaying the action of the cylinder. By adding the damping body 430, the locking and unlocking actions of the second locking mechanism 400b can be delayed, so that the action of the second locking mechanism 400b is completed later than that of the first locking mechanism 400a.

[0070] Specifically, the damping body 430 on the locking cylinder 410 of the second locking mechanism 400b can be configured as an elastic damper or a damping plug. Of course, the present invention is not limited to this. All damping structures that can delay the action of the cylinder should fall within the protection scope of the present invention.

[0071] See Figure 1 , Figure 2 and Figure 5In this embodiment of the invention, the side of the pin 420 facing the tank 100 is provided with a wedge-shaped surface 421. The wedge-shaped surface 421 is used to gradually press the tank cover 200 onto the tank 100. The addition of the wedge-shaped surface 421 on the pin 420 can ensure the stability of the locking. It can be understood that in order for the pin 420 to gradually press the tank cover 200 onto the tank 100 as it continues to extend toward the pin opening 235, the wedge-shaped surface 421 is set to be inclined inward in the direction from the connecting end of the pin 420 toward the free end. It should be noted that the connecting end of the pin 420 is the end connected to the piston rod end of the locking cylinder 410, and the free end of the pin 420 is the end located away from the piston rod end of the locking cylinder 410.

[0072] Furthermore, a sealing strip is provided on the sealing surface of the can lid 200 or the can body 100. When the opening and closing mechanism 300 drives the can lid 200 to complete the flip-closing action, the sealing strip contacts the corresponding sealing surface. During the subsequent locking action, the wedge-shaped surface 421 of the pin 420 gradually applies a pressing force to the can lid 200, which compresses the sealing strip, thereby ensuring the reliability of the seal. It should be noted that the sealing surface of the can lid 200 and the can body 100 refers to the side of the two that are opposite to each other.

[0073] Please see again Figures 1 to 4 In this embodiment of the invention, a locking pin assembly 210 is provided on the can lid 200. The locking pin assembly 210 includes a locking pin mounting base 220 and a locking pin body 230. The locking pin mounting base 220 is located on the periphery of the can lid 200, and the locking pin body 230 is adjustablely positioned on the locking pin mounting base 220 and has a corresponding pin opening 235. By making the position of the locking pin body 230 adjustable, the position of the pin opening 235 can be adjusted, further ensuring the reliability and stability of the locking action. Specifically, the pin opening 235 can be square.

[0074] In this embodiment of the invention, the locking pin 230 has an elongated mounting hole 234, which extends perpendicular to the sealing surface of the can cover 200. The locking pin 230 is detachably connected to the locking pin mounting seat 220 by a fastener 240 passing through the mounting hole 234. That is, the position of the fastener 240 can be adjusted along the extension direction of the mounting hole 234 to adjust the installation position of the locking pin 230 on the locking pin mounting seat 220. Since the extension direction of the mounting hole 234 is perpendicular to the sealing surface of the can cover 200, when the sealing strip on the sealing surface of the can cover 200 or the can body 100 is worn, the position of the fastener 240 in the mounting hole 234 can be adjusted, specifically by moving the locking pin 230 toward the can body 100, to ensure the sealing effect.

[0075] Specifically, there can be two mounting holes 234 and two fasteners 240. The two mounting holes 234 are spaced apart on the locking pin body 230, and the two fasteners 240 are correspondingly inserted into the two mounting holes 234 and detachably connected to the locking pin mounting base 220. More specifically, the elongated mounting hole 234 is designed as a slotted hole, and the fastener 240 can be a threaded connector that passes through the mounting hole 234 and is threadedly connected to the threaded hole on the locking pin mounting base 220.

[0076] In this embodiment of the invention, the locking pin mounting base 220 includes two clamping lugs 221 spaced apart circumferentially on the periphery of the can lid 200. The locking pin body 230 includes an end-fixing section 231, a lateral fixing section 232, and a locking section 233. The lateral fixing section 232 is positioned between the two clamping lugs 221 and has a mounting hole 234. A fastener 240 passes through the mounting hole 234 and is connected in series with the two clamping lugs 221. The fixing section 231 is located at the end of the lateral fixing section 232 facing away from the tank body 100 and extends out from the two clamping ear plates 221. The locking pin assembly 210 also includes a locking nut 250 that is threadedly connected to the end fixing section 231 and abuts against the two clamping ear plates 221. The insertion locking section 233 is located at the end of the lateral fixing section 232 facing the tank body 100 and extends out from the two clamping ear plates 221. The insertion locking section 233 has a corresponding insertion hole 235. That is, the two clamping ear plates 221 can clamp the locking pin body 230, and the fastener 240 can connect the lateral fixing section 232 of the locking pin body 230 with the two clamping ear plates 221. At the same time, the addition of the end fixing section 231 and the locking nut 250 can realize the end positioning of the locking pin body 230, so as to further ensure the stability of the locking pin body 230 on the locking pin mounting seat 220.

[0077] Furthermore, both clamping ear plates 221 are provided with connecting holes that communicate with the mounting holes 234. The fastener 240 is a structure of connecting bolt and connecting nut. The shank of the connecting bolt passes sequentially through the connecting hole of one clamping ear plate 221, the mounting hole 234, the connecting hole of the other clamping ear plate 221, and the connecting nut. The head of the connecting bolt abuts against the corresponding clamping ear plate 221. The connecting nut is threadedly connected to the shank of the connecting bolt and abuts against the corresponding clamping ear plate 221. In addition, the end-fixed section 231 is provided with an external thread section for the locking nut 250 to be sleeved and threadedly connected. The locking pin assembly 210 also includes an adjusting shim that presses against the locking nut 250 and the clamping ear plate 221. The number of locking nuts 250 can be at least two, and at least two locking nuts 250 and adjusting shims are stacked sequentially.

[0078] In this embodiment of the invention, the locking pin mounting base 220 further includes an intermediate connecting plate 222 connecting the outer ends of the two clamping lugs 221. The intermediate connecting plate 222 is also provided with a set screw 223 for abutting against the lateral fixing section 232. The addition of the intermediate connecting plate 222 can both stop the locking pin body 230 laterally and facilitate the installation of the set screw 223. The addition of the set screw 223 can prevent the locking pin body 230 from swaying in the width direction of the mounting hole 234.

[0079] Specifically, the number of set screws 223 can be at least two, and at least two set screws 223 are spaced apart along the length of the intermediate connecting plate 222 and respectively abut against the lateral fixing section 232. At the same time, the side of the lateral fixing section 232 used for the set screws 223 to abut against is set as an inclined surface.

[0080] like Figure 1 , Figure 6 and Figure 7 As shown, in this embodiment of the invention, the can lid opening and closing locking device further includes a sliding hinge assembly 600. The first end of the sliding hinge assembly 600 is movably disposed on the can body 100, and the second end of the sliding hinge assembly 600 extends out. The can lid 200 is installed on the second end of the sliding hinge assembly 600 so as to be flipped open or closed. The moving direction of the sliding hinge assembly 600 is set in the same direction as the extension and retraction driving direction of the opening and closing mechanism 300, so that the opening and closing mechanism 300 can sequentially perform the flipping closing action and the sliding closing action when driving the can body 100 to close. By setting the sliding hinge assembly 600, the hinge structure of the can lid 200 on the can body 100 can slide freely on the can body 100. During the process of controlling the can lid 200 to close and lock, the opening and closing mechanism 300 can first drive the can lid 200 to perform a flip-to-close action until the flip-to-close action is in place. After the flip-to-close action is in place, the driving of the opening and closing mechanism 300 does not stop. At the same time, the locking mechanism is activated to lock the can lid 200. While the pin 420 with the wedge-shaped surface 421 presses the can lid 200 against the can body 100, the opening and closing mechanism 300 drives the can lid 200 to move toward the can body 100 due to the movement guide of the sliding hinge assembly. This causes the can lid 200 to switch from the flip-to-close action to the sliding-to-close action. It is equivalent to the entire can lid 200 moving and pressing parallel toward the can body 100, thereby ensuring the uniformity of the pressing between the can body 100 and the can lid 200 and further ensuring the sealing effect.

[0081] It should be noted that the opening and closing mechanism 300 may include an opening and closing cylinder 310. The mounting end of the opening and closing cylinder 310 is located on the tank body 100, and the telescopic drive end is connected to the tank cover 200. The telescopic drive end of the opening and closing cylinder 310 can be controlled to perform telescopic movement, thereby driving the tank cover 200 to flip open or close.

[0082] In this embodiment of the invention, the locking detection component 500 is further used to detect the locking action of the second locking mechanism 400b, and the can lid opening and closing locking device further includes an opening and closing detection component for detecting the flipping and closing action of the can lid 200. The controller is also communicatively connected to the opening and closing detection component and configured as follows:

[0083] Upon receiving a detection signal indicating that the lid has been flipped and closed, the first locking mechanism 400a and the second locking mechanism 400b are controlled to lock the lid 200.

[0084] Upon receiving a detection signal indicating that the locking mechanism is in place, the control mechanism 300, the first locking mechanism 400a, and the second locking mechanism 400b are stopped.

[0085] Understandably, during the process of controlling the can lid 200 to close and lock, the opening and closing mechanism 300 can be controlled first to drive the can lid 200 to perform a flip-closing action. During this process, the opening and closing detection component detects the flip-closing action of the can lid 200 and sends a detection signal to the controller when it detects that the flip-closing is in place. The controller then controls the first locking mechanism 400a and the second locking mechanism 400b to begin locking the can lid 200 based on this detection signal. At the same time, the action of the opening and closing mechanism 300 does not stop, but due to the sliding hinge assembly... With setting 600, the flip-closing action of the can lid 200 is switched to a sliding closing action. During this process, the locking detection component 500 detects the locking action of the second locking mechanism 400b. Upon detecting that the locking is complete, due to the addition of the damper 430 on the second locking mechanism 400b for delaying the cylinder action, it is confirmed that both the first locking mechanism 400a and the second locking mechanism 400b have completed their locking actions. Then, the opening and closing mechanism 300, the first locking mechanism 400a, and the second locking mechanism 400b are controlled to stop. By adding the opening and closing detection component, sequential control of the actions of the opening and closing mechanism 300 and the locking mechanism can be achieved during the closing and locking process of the can lid 200, eliminating the need for an additional hydraulic sequence valve. This further improves the reliability of the opening, closing, and locking sequence of the can lid 200.

[0086] Specifically, the opening and closing detection component includes a closing trigger and a closing proximity switch 700. The closing proximity switch 700 is located on the tank body 100, and the closing trigger is located on the tank lid 200 corresponding to the closing proximity switch 700. The closing trigger is used to trigger the closing proximity switch 700 when the tank lid 200 is flipped and closed in place. The closing proximity switch 700 is communicatively connected to the controller and can send a detection signal indicating that the flipped and closed position has been reached to the controller. Of course, the invention is not limited to this. The opening and closing detection component can also be an angle sensor. The angle sensor detects the flipping angle of the tank lid 200 to determine whether the flipping and closing action of the tank lid 200 is in place.

[0087] See Figures 6 to 8 In this embodiment of the invention, a sliding support seat 110 is provided on the tank body 100, and a hinged connecting seat 260 is provided on the tank cover 200. The sliding hinge assembly 600 includes a sliding mounting member 610 and a hinge shaft 620. The sliding mounting member 610 is movably mounted on the sliding support seat 110, and the moving direction of the sliding mounting member 610 is in the same direction as the telescopic driving direction of the opening and closing mechanism 300. One end of the sliding mounting member 610 away from the tank cover 200 extends out of the sliding support seat 110 and is provided with a limiting part 611 for abutting against the sliding support seat 110. The other end of the sliding mounting member 610 near the tank cover 200 extends out of the sliding support seat 110 and is provided with a rotating part 612 forming a fitting through hole. The hinge shaft 620 passes through the fitting through hole and is fixedly connected to the hinged connecting seat 260. When the opening and closing mechanism 300 drives the can lid 200 to perform a flip-open or close action, it can drive the hinge shaft 620 to rotate within the through hole of the sleeve. In addition, before the opening and closing mechanism 300 drives the can lid 200 to perform a flip-open action, the opening and closing mechanism 300 should first drive the can lid 200 to move parallel away from the can body 100, and the sliding mounting part 610 follows and extends on the sliding support 110 until the limiting part 611 on the sliding mounting part 610 abuts against the sliding support 110. Only then can the can lid 200 perform a flip-open action under the drive of the starting mechanism. After the opening and closing mechanism 300 drives the can lid 200 to perform a flip-close action, the opening and closing mechanism 300 can also drive the can lid 200 to move parallel towards the can body 100, and the sliding mounting part 610 follows and retracts on the sliding support 110. By adding the limiting part 611 to the sliding mounting part 610, the sliding mounting part 610 can be prevented from coming off the sliding support seat 110. The setting of the rotating part 612 and the hinge shaft 620 can facilitate the installation of the hinged connecting seat 260.

[0088] Furthermore, a through sliding channel is formed on the sliding support 110. The through direction of the sliding channel is the same as the extension and retraction drive direction of the opening and closing mechanism 300. The sliding mounting component 610 includes a sliding shaft portion passing through the sliding channel and a limiting portion 611 and a rotating drum portion 612 respectively disposed at both ends of the sliding shaft portion. The limiting portion 611 and the rotating drum portion 612 are both located on the outside of the sliding support 110. The limiting portion 611 can be configured as follows: Figure 7 The end plate shown is integrated with the sliding shaft, or it can be designed as follows: Figure 8The nut shown has an external thread at the end of the sliding shaft portion away from the can cover 200 for threaded connection. There can be two nuts. In addition, the through hole on the rotating drum portion 612 extends through the rotating drum portion 612 in a direction perpendicular to the sliding shaft portion. The hinge connection seat includes a first hinge side plate and a second hinge side plate spaced apart on the can cover 200. The first hinge side plate and the second hinge side plate are respectively located at both ends of the rotating drum portion 612. The hinge shaft 620 passes through the first hinge side plate, the through hole and the second hinge side plate in sequence. The two ends of the hinge shaft 620 are respectively fixedly connected to the first hinge side plate and the second hinge side plate one by one.

[0089] Furthermore, the sliding support 110 is located at the top of the tank body 100, and the hinged connecting seat is located at the top of the tank cover 200 corresponding to the sliding support 110. The number of sliding support 110, hinged connecting seat, and sliding hinge assembly 600 can all be two. The two sliding support 110 are spaced apart at the top of the tank body 100, and the two hinged connecting seats are spaced apart at the top of the tank cover 200 and are arranged in a one-to-one correspondence with the two sliding support 110. The two sliding hinge assemblies 600 are used to connect the corresponding sliding support 110 and hinged connecting seat respectively. Meanwhile, there can be two opening and closing mechanisms 300, which are respectively located on both sides of the two sliding support seats 110. There can be three first locking mechanisms 400a and one second locking mechanism 400b, that is, there can be a total of four locking mechanisms. All four locking mechanisms are located below the two opening and closing mechanisms 300, and two of the locking mechanisms can lock the upper part of the can lid 200, while the other two locking mechanisms can lock the lower part of the can lid 200.

[0090] See Figure 2In this embodiment of the invention, the locking detection component 500 includes a locking trigger, an unlocking proximity switch 510, and a locking proximity switch 520. The unlocking proximity switch 510 and the locking proximity switch 520 are sequentially and spaced apart on the extension path of the pin 420 of the second locking mechanism 400b. The locking trigger is located on the pin 420 of the second locking mechanism 400b and can move between the unlocking proximity switch 510 and the locking proximity switch 520. The locking trigger is used to trigger the unlocking proximity switch 510 when it is unlocked and to trigger the locking proximity switch 520 when it is locked. The controller is communicatively connected to the unlocking proximity switch 510 and the locking proximity switch 520, respectively. That is, the position of the pin 420 can be detected using proximity switches. Proximity switches can accurately reflect the position of the moving mechanism. Their positioning accuracy, service life, ease of installation and adjustment, and adaptability to harsh environments are unmatched by general mechanical limit switches. Meanwhile, in addition to an unlocking proximity switch 510 that detects whether the pin 420 has moved to a preset unlocking position, a locking proximity switch 520 that detects whether the pin 420 has moved to a preset locking position is also provided. This means that when the unlocking proximity switch 510 is triggered by the locking trigger, it proves that the second locking mechanism 400b is unlocked, and at this time, the opening and closing mechanism 300 can be controlled to drive the can lid 200 to open. When the locking proximity switch 520 is triggered by the locking trigger, it proves that the second locking mechanism 400b is locked, and at this time, the first locking mechanism 400a and the second locking mechanism 400b can be controlled to stop driving.

[0091] Furthermore, the locking trigger is located at one end of the pin 420 near the locking cylinder 410 of the second locking mechanism 400b. The end of the pin 420 away from the locking cylinder 410 can extend into the pin port 235, while the part of the pin 420 with the locking trigger does not extend into the pin port 235.

[0092] In this embodiment of the invention, the can lid opening and closing locking device further includes a manual controller. The manual controller is used to obtain an open button and a close button to control the operation of the opening and closing mechanism 300, as well as a lock button and an unlock button to control the operation of the first locking mechanism 400a and the second locking mechanism 400b. With these four buttons, the can lid 200 can be easily manually controlled during maintenance.

[0093] In this embodiment of the invention, a sealing strip is provided on the sealing surface of either the can body 100 or the can lid 200, and the sealing strip is designed with a hollow structure to improve its elasticity. The sealing strip can also be made of EPDM material, which is harder and has better fatigue resistance than traditional foamed rubber.

[0094] Furthermore, the closing and locking control process of the can lid 200 can be as follows:

[0095] (1) Receive the lockout control command;

[0096] (2) Control the opening and closing mechanism 300 to drive the can lid 200 to close, wherein the can lid 200 first performs a flip-to-close action and then a sliding-to-close action;

[0097] (3) The proximity switch 700 is triggered by the closing trigger when the can cover 200 is flipped and closed in place, and sends the detection signal of flipping and closing in place to the controller.

[0098] (4) While the opening and closing mechanism 300 continues to perform the sliding closing action, the controller controls the locking mechanism to perform the locking action according to the detection signal that the flipping and closing is in place;

[0099] (5) When the second locking mechanism 400b is locked in place, the locking proximity switch 520 is triggered by the locking trigger and sends the locking detection signal to the controller.

[0100] (6) The controller controls the opening and closing mechanism 300 and all locking mechanisms to stop driving based on the detection signal of locking in place.

[0101] Meanwhile, the unlocking and opening control process of the can lid 200 can be as follows:

[0102] (1) Receive unlock / open control commands;

[0103] (2) Control all locking mechanisms to perform unlocking actions;

[0104] (3) When the second locking mechanism 400b is unlocked, the unlocking proximity switch 510 is triggered by the locking trigger and sends the unlocking detection signal to the controller.

[0105] (4) The controller controls all locking mechanisms to stop driving and controls the opening and closing mechanism 300 to drive the can lid 200 to open according to the detection signal of unlocking.

[0106] Furthermore, a second aspect of the present invention provides a suction tank, wherein the suction tank includes a tank body 100 and a lid opening and closing locking device as described above. Since the suction tank adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0107] Furthermore, a third aspect of the present invention provides a vacuum truck, wherein the vacuum truck includes a vacuum tank as described above. Since the vacuum truck employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0108] Specifically, such as Figure 9 As shown, the vacuum truck also includes a hydraulic drive system, which includes an oil supply device 800, a locking directional valve 810, and an opening / closing directional valve 820. The locking inlet of the locking directional valve 810 is connected to the oil supply device 800, the locking working port of the locking directional valve 810 is connected to the rodless chamber of all the locking cylinders 410, and the unlocking working port of the locking directional valve 810 is connected to the rod chamber of all the locking cylinders 410. The opening / closing inlet of the opening / closing directional valve 820 is connected to the oil supply device 800, and the opening working port and closing working port of the opening / closing directional valve 820 are respectively connected to the rodless chamber and rod chamber of the opening / closing cylinder 310. The controller is also communicatively connected to the locking directional valve 810 and the opening / closing directional valve 820. When the closed proximity switch 700 sends a detection signal indicating that the flip-closed position is in place to the controller, the controller can control the locking directional valve 810 to switch to connect the locking working oil port and the locking inlet oil port. When the unlocking proximity switch 510 sends a detection signal indicating that the unlocking position is in place to the controller, the controller can control the opening and closing directional valve 820 to switch to connect the opening working oil port and the opening and closing inlet oil port.

[0109] More specifically, the oil supply device 800 includes an oil tank 830 and a gear pump 840. The oil inlet of the gear pump 840 is connected to the oil tank 830, and the oil outlet of the gear pump 840 is connected to both the locking oil inlet and the opening / closing oil inlet. The output end of the gear pump 840 is connected to a power take-off (PTO) 850. By using a gear pump 840 as the pumping component of the oil supply device 800, not only can efficient and stable oil delivery be achieved, but the system can also switch to using the PTO 850 for force transmission.

[0110] In addition, the hydraulic drive system also includes an overflow hydraulic device 860, which includes an overflow valve 862 and an overflow directional valve 861. The overflow inlet of the overflow directional valve 861 is connected to the oil supply pipe of the oil supply device 800 through an overflow inlet pipe. The overflow directional valve 861 is used to switch between the overflow return port and the overflow working port and connect to the overflow inlet port. The inlet of the overflow valve 862 is connected to the overflow inlet pipe, and the outlet of the overflow valve 862 is connected back to the oil tank 810 of the oil supply device 800. By adding the overflow hydraulic device 860, the overflow directional valve 861 is de-energized during the stable closing process of the tank cover 200. The overflow inlet of the overflow directional valve 861 is directly connected to the overflow return port. At this time, the gear pump 840 can transmit force through the power take-off 850. During the unlocking, opening, closing, and locking process of the tank cover 200, the overflow directional valve 861 is energized, and the overflow inlet of the overflow directional valve 861 is switched to connect with the overflow working port. At this time, the overflow valve 862 on the overflow inlet pipe can stabilize the system oil pressure. When the oil pressure in the system reaches the set oil pressure of the overflow valve 862, the overflow valve 862 opens, and the oil flows back to the oil tank 830 to relieve pressure.

[0111] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0112] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0114] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A can lid opening and closing locking device, characterized in that, The can lid opening and closing locking device includes: A can lid (200) is provided on the can body (100); An opening and closing mechanism (300) is used to drive the can lid (200) to flip open or close the can opening; A first locking mechanism (400a) is provided on the tank body (100) and is used to lock or unlock the tank lid (200). The second locking mechanism (400b) is disposed on the tank body (100) at a distance from the first locking mechanism (400a) and the locking cylinder (410) is provided with a damping body (430) for delaying the action of the cylinder, so as to delay locking or unlocking the tank cover (200) after the first locking mechanism (400a). A locking detection component (500) is used to detect the unlocking and locking actions of the second locking mechanism (400b); The controller is communicatively connected to the locking detection component (500) and configured to: Upon receiving a detection signal indicating that the lock is engaged, the opening and closing mechanism (300) is controlled to drive the can lid (200) to open. The can lid opening and closing locking device further includes a sliding hinge assembly (600), the first end of which is movably disposed on the can body (100), and the second end of which extends out. The can lid (200) is installed on the second end of the sliding hinge assembly (600) in a flip-open or flip-close manner. The moving direction of the sliding hinge assembly (600) is the same as the telescopic driving direction of the opening and closing mechanism (300), so that the opening and closing mechanism (300) can sequentially perform a flip-close action and a sliding close action when driving the can lid (200) to close. The can lid opening and closing locking device further includes an opening and closing detection assembly for detecting the flip-close action of the can lid (200). The controller is communicatively connected to the opening and closing detection assembly and configured as follows: Upon receiving a detection signal indicating that the lid has been flipped closed, the first locking mechanism (400a) and the second locking mechanism (400b) are controlled to lock the lid (200). Upon receiving a detection signal indicating that the locking mechanism is in place, the opening and closing mechanism (300), the first locking mechanism (400a), and the second locking mechanism (400b) are controlled to stop operating.

2. The can lid opening and closing locking device according to claim 1, characterized in that, Both the first locking mechanism (400a) and the second locking mechanism (400b) include a locking cylinder (410) disposed on the tank body (100) and a pin (420) connected to the piston rod end of the locking cylinder (410). The tank cover (200) has a first pin port and a second pin port for the pins (420) of the first locking mechanism (400a) and the second locking mechanism (400b) to extend into or retract in a corresponding manner.

3. The can lid opening and closing locking device according to claim 2, characterized in that, The pin (420) has a wedge-shaped surface (421) on the side facing the tank (100), and the wedge-shaped surface (421) is used to gradually press the tank cover (200) onto the tank (100).

4. The can lid opening and closing locking device according to claim 2, characterized in that, The can lid (200) is provided with a locking pin assembly (210), which includes a locking pin mounting seat (220) and a locking pin body (230). The locking pin mounting seat (220) is located on the periphery of the can lid (200), and the locking pin body (230) is configurably located on the locking pin mounting seat (220) and has a corresponding pin opening (235).

5. The can lid opening and closing locking device according to claim 4, characterized in that, The locking pin body (230) has an elongated mounting hole (234) that extends perpendicular to the sealing surface of the can cover (200). The locking pin body (230) is detachably connected to the locking pin mounting seat (220) by a fastener (240) that passes through the mounting hole (234).

6. The can lid opening and closing locking device according to claim 5, characterized in that, The locking pin mounting base (220) includes two clamping lugs (221) spaced apart circumferentially on the periphery of the can lid (200). The locking pin body (230) includes an end-fixing section (231), a side-fixing section (232), and a locking section (233). The side-fixing section (232) is positioned between the two clamping lugs (221) and has the mounting hole (234). The fastener (240) passes through the mounting hole (234) and is connected in series with the two clamping lugs (221). The end-fixing section (231) is positioned between the two clamping lugs (221) and has the mounting hole (234). 31) The lateral fixing section (232) is located at one end away from the tank body (100) and extends out of the two clamping ear plates (221). The locking pin assembly (210) also includes a locking nut (250) that is threaded to the lateral fixing section (231) and abuts against the two clamping ear plates (221). The insertion locking section (233) is located at one end of the lateral fixing section (232) facing the tank body (100) and extends out of the two clamping ear plates (221). The insertion locking section (233) has a corresponding insertion hole (235).

7. The can lid opening and closing locking device according to claim 6, characterized in that, The locking pin mounting base (220) also includes an intermediate connecting plate (222) connecting the outer ends of the two clamping ear plates (221), and the intermediate connecting plate (222) is also provided with a set screw (223) for abutting against the lateral fixing section (232).

8. The can lid opening and closing locking device according to any one of claims 1 to 7, characterized in that, The tank body (100) is provided with a sliding support seat (110), and the tank cover (200) is provided with a hinged connecting seat (260). The sliding hinge assembly (600) includes a sliding mounting part (610) and a hinge shaft (620). The sliding mounting part (610) is movably mounted on the sliding support seat (110), and the moving direction of the sliding mounting part (610) is in the same direction as the telescopic driving direction of the opening and closing mechanism (300). 10) One end of the sliding support (110) away from the can lid (200) extends out of the sliding support (110) and is provided with a limiting part (611) for abutting against the sliding support (110). The sliding mounting part (610) near the can lid (200) extends out of the sliding support (110) and is provided with a rotating part (612) forming a fitting through hole. The hinge shaft (620) passes through the fitting through hole and is fixedly connected to the hinge connecting seat (260).

9. The can lid opening and closing locking device according to any one of claims 1 to 7, characterized in that, The locking detection component (500) includes a locking trigger, an unlocking proximity switch (510), and a locking proximity switch (520). The unlocking proximity switch (510) and the locking proximity switch (520) are sequentially spaced apart on the extension path of the pin (420) of the second locking mechanism (400b). The locking trigger is located on the pin (420) of the second locking mechanism (400b) and can move between the unlocking proximity switch (510) and the locking proximity switch (520). The locking trigger is used to trigger the unlocking proximity switch (510) when it is unlocked and to trigger the locking proximity switch (520) when it is locked. The controller is communicatively connected to the unlocking proximity switch (510) and the locking proximity switch (520), respectively.

10. A suction tank, characterized in that, The suction tank includes a tank body (100) and a tank cover opening and closing locking device according to any one of claims 1 to 9.

11. A sewage suction truck, characterized in that, The vacuum truck includes the vacuum tank according to claim 10.

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