A cleaning vehicle with an anti-collision device and an operating method thereof

Abstract

The present disclosure relates to a cleaning vehicle, comprising: a box body, which is used to carry garbage and can be tilted backward from an original position to a tilted position relative to the body of the cleaning vehicle to dump the garbage; an anti-collision device, which is installed on the body and located at the rear door of the box body and can swing from an original position to a swing position relative to the body of the cleaning vehicle around a vertical rotation axis to avoid the box body; and a hydraulic control component, which can control the tilting action of the box body and the swinging action of the anti-collision device in a set order to prevent the box body from interfering with the anti-collision device during the tilting process. Based on the embodiments of the present application, at least the misoperation of the anti-collision device of the cleaning vehicle can be effectively prevented, and the mechanical interference between the box body and the anti-collision device during the garbage dumping process can be avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of sanitation equipment, and in particular to a cleaning vehicle with an anti-collision device and an operating method thereof. Background Art

[0002] Road sweepers used for sanitation work are prone to traffic accidents frequently during road sweeping operations due to their slow speed, especially rear-end collisions with faster vehicles behind them. In view of this, installing anti-collision devices can effectively reduce the casualties in accidents. Due to the structural limitations of road sweepers, anti-collision devices are usually fixed at the rear end of the vehicle chassis, so as to play a buffering role in the event of a rear-end collision, absorbing the energy generated by the collision to reduce the degree of loss.

[0003] The anti-collision device installed needs to fully consider the operating characteristics of the road sweeper, that is, the anti-collision device needs to be able to swing left and right to adapt to the dumping action of the garbage bin body, so that before dumping the garbage, the anti-collision device is deflected 90° relative to the forward direction to the side of the vehicle. Otherwise, it is easy to cause mechanical collision between the garbage bin body and the anti-collision device, and even cause serious mechanical damage. In addition, there is currently a lack of control methods for the anti-collision device of the road sweeper. If it is directly controlled by manual operation, it is easy to make mistakes. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a cleaning vehicle with an anti-collision device and an operating method thereof, which can at least effectively prevent misoperation of the anti-collision device of the cleaning vehicle and avoid mechanical interference between the box and the anti-collision device during garbage dumping.

[0005] In one aspect of the present disclosure, a cleaning vehicle with an anti-collision device is provided, comprising:

[0006] A box body, used to carry garbage and capable of being tilted backward from an original position to an inclined position relative to the body of the sweeper to dump the garbage;

[0007] an anti-collision device, which is installed on the vehicle body and located at the rear door of the box body, and can swing from an original position to a swing position relative to the vehicle body of the sweeper around a vertical rotation axis to avoid the box body; and

[0008] The hydraulic control component can control the tilting action of the box body and the swinging action of the anti-collision device in a set order to prevent the box body and the anti-collision device from interfering with each other during the tilting process.

[0009] In some embodiments, the hydraulic control assembly includes:

[0010] Oil pump, oil return line;

[0011] A lifting cylinder connected to the oil pump and the oil return line through a first reversing valve, and used to drive the tilting action of the box body; and

[0012] The yaw cylinder is connected to the oil pump and the oil return line through a second reversing valve, and is used to drive the yaw action of the anti-collision device.

[0013] In some embodiments, the first reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further comprises:

[0014] An electric control component, communicatively connected to the first reversing valve;

[0015] A first support, fixedly disposed on the left or right side of the rear of the vehicle body relative to the forward direction of the sweeper, and hinged to the anti-collision device; and

[0016] a first induction switch, mounted on the first support and communicatively connected to the electric control assembly, for detecting the position of the anti-collision device;

[0017] Wherein, the electronic control component is configured to: when the first sensing switch detects that the anti-collision device is in a swaying position, control the lifting cylinder through the first reversing valve to tilt the box.

[0018] In some embodiments, the sweeper further comprises:

[0019] A latch, mounted at the rear of the vehicle body, capable of locking the anti-collision device when the anti-collision device is in the original position, and unlocking the anti-collision device before the anti-collision device performs a swinging action;

[0020] The hydraulic control assembly also includes:

[0021] The locking oil cylinder is connected to the oil pump and the return oil through the second reversing valve, and can drive the latch to lock or unlock the anti-collision device.

[0022] In some embodiments, the rod chamber of the locking oil cylinder and the rodless chamber of the sway oil cylinder are respectively connected to the first oil port of the second reversing valve, and the rodless chamber of the locking oil cylinder and the rod chamber of the sway oil cylinder are respectively connected to the second oil port of the second reversing valve;

[0023] The hydraulic control assembly also includes:

[0024] a first sequence valve connected between the second oil port of the second reversing valve and the rodless chamber of the sway oil cylinder and capable of making the oil inlet pressure of the rodless chamber of the sway oil cylinder higher than the oil inlet pressure of the rod chamber of the locking oil cylinder; and

[0025] The second sequential valve is connected between the first oil port of the second reversing valve and the rodless chamber of the locking cylinder, and can make the oil inlet pressure of the rod chamber of the sway cylinder lower than the oil inlet pressure of the rodless chamber of the locking cylinder.

[0026] In some embodiments, the second reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further includes:

[0027] An electric control component, communicatively connected to the second reversing valve;

[0028] A second induction switch, mounted on the vehicle body, for detecting the position of the box and communicatively connected to the electronic control assembly;

[0029] Wherein, the electronic control component is configured as follows: when the second induction switch detects that the box is in its original position, the second reversing valve is used to control the sway cylinder and the locking cylinder, so that the anti-collision device is locked by the latch after it swings back to its original position.

[0030] In some embodiments, the housing comprises:

[0031] a rear door, which can be opened or closed to control the dumping of said garbage;

[0032] The hydraulic control assembly also includes:

[0033] The rear door oil cylinder can drive the opening and closing of the rear door, and is connected to the oil pump and the oil return oil circuit through a third reversing valve.

[0034] In some embodiments, the rodless chamber of the rear door oil cylinder and the first oil port of the third reversing valve are respectively connected to the third oil port of the second reversing valve, and the rod chamber of the rear door oil cylinder and the second oil port of the third reversing valve are respectively connected to the fourth oil port of the second reversing valve;

[0035] The hydraulic control assembly also includes:

[0036] The third sequential valve is connected between the fourth oil port of the first reversing valve and the rod chamber of the rear door cylinder, and controls the oil inlet pressure of the rod chamber of the rear door cylinder to be higher than the oil inlet pressure of the fourth oil port of the second reversing valve.

[0037] In some embodiments, the third reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further includes:

[0038] An electric control component, communicatively connected to the third reversing valve;

[0039] a second induction switch, mounted on the vehicle body, for detecting the position of the box and communicatively connected to the electric control assembly; and

[0040] a third induction switch, mounted on the second support, for detecting the position of the anti-collision device and communicatively connected to the electric control assembly;

[0041] Wherein, the electric control component is configured to: when the second induction switch detects that the box is in the original position, control the rear door cylinder through the third reversing valve to open the rear door; and

[0042] When the third induction switch detects that the anti-collision device is in the original position, the rear door cylinder is controlled by the third reversing valve to close the rear door.

[0043] In some embodiments, the anti-collision device can make a pitching motion relative to the vehicle body and can be maintained in a horizontal position or a vertical position relative to the ground, respectively, and the hydraulic control component further includes:

[0044] The first pitch oil cylinder and the second pitch oil cylinder are respectively connected to the oil pump and the oil return oil circuit through a fifth reversing valve, and are used to drive the pitching movement of the anti-collision device.

[0045] In some embodiments, the hydraulic control assembly further includes:

[0046] A first balancing valve group, arranged in the oil circuit between the first pitch oil cylinder and the fifth reversing valve; and

[0047] The second balancing valve group is arranged in the oil circuit between the second pitch cylinder and the fifth reversing valve.

[0048] In some embodiments, the first reversing valve, the second reversing valve, the third reversing valve and the fifth reversing valve are all three-position four-way electromagnetic reversing valves, and the cleaning vehicle further includes:

[0049] The electric control component is communicatively connected to the first reversing valve, the second reversing valve, the third reversing valve and the fifth reversing valve.

[0050] In some embodiments, the first sequence valve, the second sequence valve, and the third sequence valve are all one-way sequence valves.

[0051] In some embodiments, the hydraulic control assembly further includes:

[0052] The first hydraulic lock is arranged in the oil circuit between the second reversing valve and the third reversing valve.

[0053] In some embodiments, the hydraulic control assembly further includes:

[0054] A second hydraulic lock is provided in the oil circuit between the first reversing valve and the lifting cylinder; and

[0055] The flow control valve is arranged in the oil circuit between the second hydraulic lock and the lifting cylinder, and is composed of two one-way throttle valves connected in parallel.

[0056] In some embodiments, the hydraulic control assembly further includes:

[0057] a relief valve connected between the oil pump and the oil return line; and

[0058] The fourth reversing valve can selectively connect the oil pump to the oil return passage.

[0059] In another aspect of the present disclosure, there is also provided an operating method of a sweeper with an anti-collision device, which is used to control the sweeper as described in any of the above embodiments, and the operating method comprises:

[0060] Before tilting the box to dump the garbage, first swing the anti-collision device to a swing position; and

[0061] After the box is reset to its original position, the anti-collision device is reset to its original position.

[0062] In some embodiments, the operating method further includes:

[0063] Before swinging the anti-collision device to the swinging position, firstly enabling the latch to unlock the anti-collision device; and

[0064] After resetting the anti-collision device to the original position, the latch is used to lock the anti-collision device.

[0065] In some embodiments, the operating method further includes:

[0066] Before tilting the box to dump garbage, after swinging the anti-collision device to the swinging position, opening the rear door;

[0067] After resetting the box to its original position and before resetting the anti-collision device to its original position, keeping the rear door in an open state; and

[0068] After the anti-collision device is locked using the latch, the rear door is closed.

[0069] In some embodiments, the operating method further includes:

[0070] When the anti-collision device is tilted, driving the anti-collision device to a horizontal position; and

[0071] According to the need for the pitch state of the anti-collision device, the pitch state of the anti-collision device is selectively adjusted to a horizontal position or a vertical position.

[0072] In some embodiments, the method of operation in a garbage dumping condition includes:

[0073] The third reversing valve is adjusted to be in the first working position, and the second reversing valve is adjusted to be in the first working position, and oil is supplied to the rod chamber of the locking oil cylinder to cancel the locking of the anti-collision device by the latch;

[0074] When the oil pressure exceeds the passing oil pressure of the first sequence valve, oil is supplied to the rodless chamber of the sway oil cylinder, so that when the anti-collision device is in a horizontal position, the sway oil cylinder drives the anti-collision device to the sway position;

[0075] When the oil pressure exceeds the passing oil pressure of the third sequence valve, oil is supplied to the rod chamber of the rear door oil cylinder, so that the rear door oil cylinder opens the rear door; and

[0076] The first reversing valve is adjusted to be in a first working position, and oil is supplied to the rodless chamber of the lifting cylinder, thereby tilting the box to dump garbage.

[0077] In some embodiments, the operation method in the reset condition includes:

[0078] Adjusting the first reversing valve to be in the second working position to supply oil to the rod chamber of the lifting cylinder, thereby resetting the box body;

[0079] Adjusting the third reversing valve to be in the first working position to supply oil to the rod chamber of the rear door oil cylinder, thereby keeping the rear door in an open state;

[0080] Adjusting the second reversing valve to be in the second working position to supply oil to the rod chamber of the sway oil cylinder, thereby resetting the anti-collision device;

[0081] When the oil pressure exceeds the passing oil pressure of the second sequence valve, oil is supplied to the rodless chamber of the locking oil cylinder, so that the latch locks the anti-collision device; and

[0082] The third reversing valve is adjusted to be in the second working position to supply oil to the rodless chamber of the rear door oil cylinder, thereby closing the rear door.

[0083] Therefore, according to the embodiment of the present disclosure, it is possible to effectively prevent mechanical interference accidents from occurring during the dumping of the trash bin and the swinging of the anti-collision device without changing the hydraulic system installed on the vehicle or adding an external power unit, thereby having a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0085] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0086] Figure 1 is a schematic structural diagram of a sweeper according to some embodiments of the present disclosure;

[0087] Figure 2 is a schematic structural diagram of an anti-collision device of a sweeper and a main viewing angle of a vehicle body according to some embodiments of the present disclosure;

[0088] Figure 3 is a schematic diagram of the structure of the anti-collision device of the sweeper and the vehicle body from a top view according to some embodiments of the present disclosure;

[0089] Figure 4 is a schematic diagram of the structure of the anti-collision device and the vehicle body of the sweeper in two states of yaw and non-yaw according to some embodiments of the present disclosure;

[0090] Figure 5 is a schematic diagram of the structure of a hydraulic control component of a sweeper according to some embodiments of the present disclosure;

[0091] Figure 6 is a schematic diagram of the structure of the anti-collision device of the sweeper according to some embodiments of the present disclosure in a horizontally placed position from a rear-view angle;

[0092] Figure 7 is a schematic diagram of the structure of the anti-collision device of the sweeper according to some embodiments of the present disclosure in a horizontally placed position, viewed from an upward angle;

[0093] Figure 8 is a schematic diagram of the structure of the anti-collision device of the sweeper in a vertically placed position from a rear view angle according to some embodiments of the present disclosure;

[0094] Fig. 9 is a schematic diagram of the structure of the anti-collision device of the sweeper according to some embodiments of the present disclosure in a vertical placement position, viewed from an upward angle;

[0095] Fig.10 It is a schematic diagram of the structure of the hydraulic control component of the sweeper according to other embodiments of the present disclosure.

[0096] In the figure:

[0097] 1. Box body, 11. Rear door;

[0098] 2. Car body;

[0099] 3. Anti-collision device;

[0100] 4. Hydraulic control components, 410. Lifting cylinder, 411. First reversing valve, 420. Sway cylinder, 421. Second reversing valve, 421B. First oil port, 421A. Second oil port, 421T third oil port, 421P fourth oil port, 430. Locking cylinder, 441. First sequence valve, 442. Second sequence valve, 443. Third sequence valve, 450. Rear door cylinder, 451. Third reversing valve, 451A1. First oil port, 451B1. Second oil port, 461. First hydraulic lock, 462. Second hydraulic lock, 463. Flow control valve, 47. Overflow valve, 48. Fourth reversing valve, 491. First pitch cylinder, 492. Second pitch cylinder, 493. Fifth reversing valve, 494. First balancing valve group, 495. Second balancing valve group;

[0101] 51. First support, 511. First induction switch, 52. Second support, 521. Third induction switch, 53. Latch.

[0102] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0103] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0104] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0105] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0106] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0107] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0108] like Figures 1 to 10 As shown:

[0109] In one aspect of the present disclosure, a cleaning vehicle having an anti-collision device is provided, comprising:

[0110] The box body 1 is used to carry garbage and can be tilted backward from the original position to the inclined position relative to the body 2 of the sweeper to dump the garbage;

[0111] an anti-collision device 3, mounted on the vehicle body 2 and located at the rear door 11 of the box body 1, and capable of swinging from an original position to a swinging position relative to the vehicle body 2 of the sweeper to avoid the box body 1 around a vertical rotation axis; and

[0112] The hydraulic control component 4 can control the tilting action of the box body 1 and the swinging action of the anti-collision device 3 in a set order to prevent the box body 1 and the anti-collision device 3 from interfering with each other during the tilting process.

[0113] The anti-collision device 3 is installed on the vehicle body 2 and located at the rear door 11 of the box body 1. It can effectively absorb the collision energy when the sweeper is rear-ended, thereby protecting the structure of the vehicle body 2 and the box body 1 from damage, and preventing the driver or operator in the cab from being injured.

[0114] Since the box body 1 can be tilted relative to the body 2 of the sweeper, and the anti-collision device 3 is arranged at the rear door 11 of the box body 1, if the position of the anti-collision device 3 is not adjusted or the position of the anti-collision device 3 is not adjusted sufficiently during the process of dumping garbage, it is easy to cause mechanical interference between the anti-collision device 3 and the box body 1, thereby causing structural damage.

[0115] To this end, the hydraulic control component 4 is used to control the tilting action of the box body 1 and the swinging action of the anti-collision device 3 in a set order, that is, before dumping the garbage, the anti-collision device 3 is first swung, and then the box body 1 is dumped, and when resetting the box body 1, the box body 1 is first reset, and then the anti-collision device 3 is reset.

[0116] like Figures 4 and 5 As shown, in order to realize the effective control of the tilting action of the box body 1 and the swinging action of the anti-collision device 3 by the hydraulic control component 4, in some embodiments, the hydraulic control component 4 includes:

[0117] Oil pump, oil return line;

[0118] A lifting cylinder 410 is connected to the oil pump and the oil return line via a first reversing valve 411, and is used to drive the tilting action of the box body 1; and

[0119] The yaw cylinder 420 is connected to the oil pump and the oil return line via a second reversing valve 421 , and is used to drive the yaw action of the anti-collision device 3 .

[0120] By means of the first reversing valve 411 and the second reversing valve 421 connected to the oil pump and the return oil, the extension and retraction movements of the lifting cylinder 410 and the sway cylinder 420 can be flexibly controlled by changing the flow direction of the hydraulic oil in the first reversing valve 411 or the second reversing valve 421, thereby controlling the movement of the box 1 and the anti-collision device 3.

[0121] Furthermore, in order to improve the timeliness and accuracy of the control of the box 1, in some embodiments, the first reversing valve 411 is an electromagnetic reversing valve, and the cleaning vehicle further includes:

[0122] An electric control component, communicatively connected to the first reversing valve 411;

[0123] A first support 51 is fixedly disposed on the left or right side of the rear of the vehicle body 2 relative to the forward direction of the sweeper, and is hinged to the anti-collision device 3; and

[0124] A first induction switch 511 is installed on the first support 51 and is communicatively connected to the electric control component, and is used to detect the position of the anti-collision device 3;

[0125] The electronic control component is configured to: when the first sensing switch 511 detects that the anti-collision device 3 is in a swaying position, control the lifting cylinder 410 through the first reversing valve 411 to tilt the box body 1.

[0126] The first induction switch 511 is set so that the first reversing valve 411 controls the lifting cylinder 410 to tilt the box body 1 only when the anti-collision device 3 is in the first set position, that is, the yaw position is good, thereby avoiding the inaccuracy of the position judgment of the anti-collision device 3 that is easily caused by manual control or visual observation. In addition, the automatic degree and responsiveness of the sweeper are further enhanced through the communication connection between the electronic control component and the electromagnetic reversing valve.

[0127] The first set position may be set to the position of the anti-collision device 3 after being deflected by 90°, and may also be flexibly set according to the specific structures of the anti-collision device 3 and the vehicle body 2 .

[0128] Further, such as Figure 4 As shown, in order to ensure the stability of the relative position of the anti-collision device 3 and the vehicle body 2 during the driving of the sweeper, in some embodiments, the sweeper further includes:

[0129] A latch 53, installed at the rear of the vehicle body 2, is capable of locking the anti-collision device 3 when the anti-collision device 3 is in the original position, and unlocking the anti-collision device 3 before the anti-collision device 3 performs a swinging action;

[0130] The hydraulic control component 4 also includes:

[0131] The locking cylinder 430 is connected to the oil pump and the return oil through the second reversing valve 421 , and can drive the latch 53 to lock or unlock the anti-collision device 3 .

[0132] The locking cylinder 430 not only controls the insertion and extraction of the latch 53 within the control range of the hydraulic control component 4, but also continuously tightens the latch 53 through oil pressure, thereby preventing the latch 53 from loosening or even falling off during the driving of the sweeper.

[0133] Further, in order to control the sequence of the plugging and unplugging action of the latch 53 and the swaying action of the anti-collision device 3, in some embodiments, the rod chamber of the locking cylinder 430 and the rodless chamber of the swaying cylinder 420 are respectively connected to the first oil port 421B of the second reversing valve 421, and the rodless chamber of the locking cylinder 430 and the rod chamber of the swaying cylinder 420 are respectively connected to the second oil port 421A of the second reversing valve 421;

[0134] The hydraulic control component 4 also includes:

[0135] A first sequence valve 441 is connected between the second oil port 421A of the second reversing valve 421 and the rodless chamber of the sway oil cylinder 420, and is capable of making the oil inlet pressure of the rodless chamber of the sway oil cylinder 420 higher than the oil inlet pressure of the rod chamber of the locking oil cylinder 430; and

[0136] The second sequential valve 442 is connected between the first oil port 421B of the second reversing valve 421 and the rodless chamber of the locking cylinder 430 , and can make the oil inlet pressure of the rod chamber of the sway cylinder 420 lower than the oil inlet pressure of the rodless chamber of the locking cylinder 430 .

[0137] Based on the first sequence valve 441 and the second sequence valve 442, when controlling the swing of the anti-collision device 3, the first oil port 421B of the second reversing valve 421 is first controlled to discharge oil. At this time, hydraulic oil is injected into the rod chamber of the locking cylinder 430 to drive the latch 53 to release the lock of the anti-collision device 3. Then, the hydraulic oil pressure in the oil circuit continues to increase. After reaching the passing pressure of the first sequence valve 441, the hydraulic oil will be injected into the rodless chamber of the swing cylinder 420, thereby pushing the anti-collision device 3 to swing to the first set position.

[0138] Similarly, when controlling the anti-collision device 3 to reset, the second oil port 421A of the second reversing valve 421 is firstly made to discharge oil. At this time, hydraulic oil is injected into the rod chamber of the sway cylinder 420 to push the anti-collision device 3 to reset. Then, the hydraulic oil pressure in the oil circuit continues to increase. After reaching the passing pressure of the second sequential valve 442, the hydraulic oil will be injected into the rodless chamber of the locking cylinder 430, so that the latch 53 fixes the position of the anti-collision device 3.

[0139] Further, in order to improve the control accuracy and automation of the resetting action of the anti-collision device 3, in some embodiments, the second reversing valve 421 is an electromagnetic reversing valve, and the cleaning vehicle further includes:

[0140] An electric control component, communicatively connected to the second reversing valve 421;

[0141] A second induction switch, mounted on the vehicle body 2, for detecting the position of the box body 1 and being communicatively connected to the electronic control assembly;

[0142] Among them, the electronic control component is configured as follows: when the second induction switch detects that the box body 1 is in the original position, the second reversing valve 421 is used to control the sway cylinder 420 and the locking cylinder 430, so that the anti-collision device 3 is locked by the latch 53 after it swings back to the original position.

[0143] By sensing the position of the box body 1 through the second sensing switch, it can be ensured that after the box body 1 is well reset, the electronic control component drives the reversing action of the second reversing valve 421 in the form of an electromagnetic reversing valve to reset the anti-collision device 3 and lock the pin 53.

[0144] Furthermore, in order to further control the timing of dumping garbage from the box 1, in some embodiments, the box 1 includes:

[0145] A rear door 11, which can be opened or closed to control the dumping of the garbage;

[0146] The hydraulic control component 4 also includes:

[0147] The rear door oil cylinder 450 can drive the rear door 11 to open and close, and is connected to the oil pump and the oil return line through the third reversing valve 451 .

[0148] Further, in order to coordinate the opening or closing time of the rear door 11 with the deflection action of the anti-collision device 3 and the plugging and pulling action of the latch 53, in some embodiments, the rodless chamber of the rear door oil cylinder 450 and the first oil port 451A1 of the third reversing valve 451 are respectively connected to the third oil port 421T of the second reversing valve 421, and the rod chamber of the rear door oil cylinder 450 and the second oil port 451B1 of the third reversing valve 451 are respectively connected to the fourth oil port 421P of the second reversing valve 421;

[0149] The hydraulic control component 4 also includes:

[0150] The third sequential valve 443 is connected between the fourth oil port 421P of the first reversing valve 411 and the rod chamber of the rear door cylinder 450 , and controls the oil inlet pressure of the rod chamber of the rear door cylinder 450 to be higher than the oil inlet pressure of the fourth oil port 421P of the second reversing valve 421 .

[0151] The third sequence valve 443 is set so that when the box 1 is controlled to dump, the opening of the rear door 11 is placed after the swing action of the anti-collision device 3 and the plug-in and pull-out action of the latch 53. Specifically, when the box 1 is controlled to dump garbage, the second reversing valve 421 connects the third oil port 421T with the first oil port 421B, and the hydraulic oil passes through the first oil port 421B, and under the control of the first sequence valve 441, the action oil pressure of the locking cylinder 430 is first satisfied, and then the action oil pressure of the swing cylinder 420 is satisfied. Subsequently, when the latch 53 releases the locking state of the anti-collision device 3 and the anti-collision device 3 swings to the first set position, the hydraulic oil in the third oil port 421T continues to increase in pressure, and after reaching the passing oil pressure of the third sequence valve 443, the rod chamber of the rear door cylinder 450 is injected with hydraulic oil, thereby driving the rear door 11 to open.

[0152] Furthermore, in order to achieve accuracy and automation in controlling the opening or closing of the rear door 11, in some embodiments, the third reversing valve 451 is an electromagnetic reversing valve, and the cleaning vehicle further includes:

[0153] An electric control component, communicatively connected to the third reversing valve 451;

[0154] a second induction switch, mounted on the vehicle body 2, for detecting the position of the box 1 and being communicatively connected to the electronic control assembly; and

[0155] A third induction switch 521 is installed on the second support 52, used for detecting the position of the anti-collision device 3, and is communicatively connected to the electric control component;

[0156] The electric control component is configured to: when the second induction switch detects that the box body 1 is in the original position, control the rear door cylinder 450 through the third reversing valve 451 to open the rear door 11; and

[0157] When the third sensing switch 521 detects that the anti-collision device 3 is in the original position, the rear door cylinder 450 is controlled by the third reversing valve 451 to close the rear door 11 .

[0158] The arrangement of the second induction switch and the third induction switch 521 ensures that the closing action of the rear door 11 occurs only when the anti-collision device 3 is in the second set position, that is, when the anti-collision device 3 is reset, and the rear door 11 is kept open before the anti-collision device 3 is reset, thereby avoiding interference with the anti-collision device 3 and the latch 53 caused by incomplete garbage dumping due to premature closing of the rear door 11.

[0159] Furthermore, in order to keep the anti-collision device 3 in a horizontal state during the yaw process, in some embodiments, the anti-collision device 3 can make a pitching motion relative to the vehicle body 2 and can be kept in a horizontal position or a vertical position relative to the ground, respectively. The hydraulic control component 4 also includes:

[0160] The first pitch cylinder 491 and the second pitch cylinder 492 are respectively connected to the oil pump and the oil return line through a fifth reversing valve 493 to drive the pitching movement of the anti-collision device 3 .

[0161] Furthermore, in order to ensure the oil pressure of the first pitch cylinder 491 and the second pitch cylinder 492 and prevent the first pitch cylinder 491 and the second pitch cylinder 492 from falling freely due to the dead weight of the piston, in some embodiments, the hydraulic control component 4 further includes:

[0162] A first balancing valve group 494 is provided in the oil circuit between the first pitch oil cylinder 491 and the fifth reversing valve 493; and

[0163] The second balancing valve group 495 is provided in the oil circuit between the second pitch cylinder 492 and the fifth reversing valve 493 .

[0164] Further, in order to enable the electronic control component to flexibly control the sway cylinder 420, the locking cylinder 430, the rear door cylinder 450 and the lifting cylinder 410, in some embodiments, the first reversing valve 411, the second reversing valve 421, the third reversing valve 451 and the fifth reversing valve 493 are all three-position four-way electromagnetic reversing valves, and the sweeper also includes:

[0165] The electronic control component is communicatively connected to the first reversing valve 411 , the second reversing valve 421 and the third reversing valve 451 .

[0166] Furthermore, in order to limit the flow direction of the hydraulic oil passing through the first sequence valve 441 , the second sequence valve 442 and the third sequence valve 443 , in some embodiments, the first sequence valve 441 , the second sequence valve 442 and the third sequence valve 443 are all one-way sequence valves.

[0167] Furthermore, in order to ensure the pressure of the hydraulic oil provided by the second reversing valve 421, in some embodiments, the hydraulic control component further includes:

[0168] The first hydraulic lock 461 is disposed in the oil circuit between the second reversing valve 421 and the third reversing valve 451 .

[0169] Furthermore, in order to ensure the pressure of the hydraulic oil provided by the first reversing valve 411 and meet the flow demand of the lifting cylinder 410, in some embodiments, the hydraulic control component further includes:

[0170] A second hydraulic lock 462 is provided in the oil circuit between the first reversing valve 411 and the lifting cylinder 410; and

[0171] The flow control valve 463 is arranged in the oil circuit between the second hydraulic lock 462 and the lifting cylinder 410, and is composed of two one-way throttle valves connected in parallel.

[0172] Furthermore, in order to ensure safe discharge of the entire hydraulic circuit, in some embodiments, the hydraulic control component further includes:

[0173] A relief valve 47 connected between the oil pump and the oil return line; and

[0174] The fourth reversing valve 48 is a two-position three-way reversing valve, which can selectively connect the oil pump to the oil return line.

[0175] In another aspect of the present disclosure, a method for operating a sweeper with an anti-collision device is provided, which is used to control the sweeper as described in any of the above embodiments, and the operating method includes:

[0176] Before tilting the box 1 to dump the garbage, first swing the anti-collision device 3 to a swinging position; and

[0177] After the box body 1 is reset to its original position, the anti-collision device 3 is reset to its original position.

[0178] In some embodiments, the operating method further includes:

[0179] Before the anti-collision device 3 is swung to the swung position, the latch 53 is first used to unlock the anti-collision device 3; and

[0180] After the anti-collision device 3 is reset to its original position, the latch 53 is used to lock the anti-collision device 3 .

[0181] In some embodiments, the operating method further includes:

[0182] Before tilting the box 1 to dump garbage, after swinging the anti-collision device 3 to the swinging position, opening the rear door 11;

[0183] After resetting the box body 1 to its original position and before resetting the anti-collision device 3 to its original position, keeping the rear door 11 in an open state; and

[0184] After the anti-collision device 3 is locked using the latch 53 , the rear door 11 is closed.

[0185] In some embodiments, the operating method further includes:

[0186] When the anti-collision device is tilted, driving the anti-collision device 3 to a horizontal position; and

[0187] According to the need for the pitch state of the anti-collision device 3, the pitch state of the anti-collision device 3 is selectively adjusted to a horizontal position or a vertical position.

[0188] In some embodiments, the method of operation in a garbage dumping condition includes:

[0189] The third reversing valve 451 is adjusted to the first working position, and the second reversing valve 421 is adjusted to the first working position, and oil is supplied to the rod chamber of the locking oil cylinder 430 to cancel the locking of the anti-collision device 3 by the latch 53;

[0190] When the oil pressure exceeds the passing oil pressure of the first sequence valve 441, oil is supplied to the rodless chamber of the sway oil cylinder 420, so that the sway oil cylinder 420 drives the anti-collision device 3 to the sway position when the anti-collision device is in the horizontal position;

[0191] When the oil pressure exceeds the passing oil pressure of the third sequence valve 443, oil is supplied to the rod chamber of the rear door oil cylinder 450, so that the rear door oil cylinder 450 opens the rear door 11; and

[0192] The first reversing valve 411 is adjusted to be in the first working position, and oil is supplied to the rodless chamber of the lifting cylinder 410, so as to tilt the box body 1 to dump the garbage.

[0193] In some embodiments, the operation method in the reset condition includes:

[0194] The first reversing valve 411 is adjusted to be in the second working position, and oil is supplied to the rod chamber of the lifting cylinder 410, so as to reset the box body 1;

[0195] The third reversing valve 451 is adjusted to be in the first working position to supply oil to the rod chamber of the rear door oil cylinder 450, thereby keeping the rear door 11 in an open state;

[0196] The second reversing valve 421 is adjusted to be in the second working position, and oil is supplied to the rod chamber of the sway oil cylinder 420, so as to reset the anti-collision device 3;

[0197] When the oil pressure exceeds the oil pressure passing through the second sequence valve 442, oil is supplied to the rodless chamber of the locking oil cylinder 430, so that the latch 53 locks the anti-collision device 3; and

[0198] The third reversing valve 451 is adjusted to be in the second working position to supply oil to the rodless chamber of the rear door oil cylinder 450 , thereby closing the rear door 11 .

[0199] Therefore, according to the embodiment of the present disclosure, it is possible to effectively prevent mechanical interference accidents from occurring during the dumping of the trash bin body 1 and the swinging of the anti-collision device 3 .

[0200] In addition, if Figure 5 As shown, based on the upper oil circuit shown in the dotted box on the right, the hydraulic control component 4 provided in the present application only needs to add the hydraulic control component shown in the dotted box on the left, so as to realize the control of the anti-collision device 3 of the sweeper without changing the hydraulic system installed on the sweeper, without adding an external power unit, with simple structure and low cost.

[0201] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0202] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning vehicle with an anti-collision device, characterized in that: include: A box body, used to carry garbage and capable of being tilted backward from an original position to an inclined position relative to the body of the sweeper to dump the garbage; an anti-collision device, which is installed on the vehicle body and located at the rear door of the box body, and can swing from an original position to a swing position relative to the vehicle body of the sweeper around a vertical rotation axis to avoid the box body; and The hydraulic control component can control the tilting action of the box and the yaw action of the anti-collision device in a set order to prevent the box from interfering with the anti-collision device during the tilting process. The hydraulic control component includes: Oil pump, oil return line; A lifting cylinder connected to the oil pump and the oil return line through a first reversing valve, and used to drive the tilting action of the box body; and The yaw cylinder is connected to the oil pump and the oil return line through a second reversing valve, and is used to drive the yaw action of the anti-collision device; wherein the sweeper also includes: An electric control component, communicatively connected to the first reversing valve; a first induction switch, communicatively connected to the electric control assembly, for detecting the position of the anti-collision device; Wherein, the electric control component is configured to: when the first induction switch detects that the anti-collision device is in a swaying position, control the lifting cylinder through the first reversing valve to tilt the box; The cleaning vehicle further comprises a latch, which is mounted at the rear of the vehicle body and can lock the anti-collision device when the anti-collision device is in the original position, and unlock the anti-collision device before the anti-collision device performs a swinging action; The hydraulic control component also includes a locking cylinder, which is connected to the oil pump and the return oil through the second reversing valve and can drive the latch to lock or unlock the anti-collision device.

2. The cleaning vehicle according to claim 1, characterized in that: The first reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further comprises: A first support, fixedly disposed on the left or right side of the rear of the vehicle body relative to the forward direction of the sweeper, and hinged to the anti-collision device; and Wherein, the first induction switch is installed on the first support; Wherein, the hydraulic control component also includes: a relief valve connected between the oil pump and the oil return line; and The fourth reversing valve can selectively connect the oil pump to the oil return passage.

3. The cleaning vehicle according to claim 1, characterized in that: The rod chamber of the locking oil cylinder and the rodless chamber of the sway oil cylinder are respectively connected to the first oil port of the second reversing valve, and the rodless chamber of the locking oil cylinder and the rod chamber of the sway oil cylinder are respectively connected to the second oil port of the second reversing valve; The hydraulic control assembly also includes: a first sequence valve connected between the second oil port of the second reversing valve and the rodless chamber of the sway oil cylinder and capable of making the oil inlet pressure of the rodless chamber of the sway oil cylinder higher than the oil inlet pressure of the rod chamber of the locking oil cylinder; and The second sequential valve is connected between the first oil port of the second reversing valve and the rodless chamber of the locking cylinder, and can make the oil inlet pressure of the rod chamber of the sway cylinder lower than the oil inlet pressure of the rodless chamber of the locking cylinder.

4. The cleaning vehicle according to claim 3, characterized in that: The second reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further comprises: An electric control component, communicatively connected to the second reversing valve; A second induction switch, mounted on the vehicle body, for detecting the position of the box and communicatively connected to the electronic control assembly; Wherein, the electronic control component is configured as follows: when the second induction switch detects that the box is in its original position, the second reversing valve is used to control the sway cylinder and the locking cylinder, so that the anti-collision device is locked by the latch after it swings back to its original position.

5. The cleaning vehicle according to claim 3, characterized in that: The box body comprises: a rear door, which can be opened or closed to control the dumping of said garbage; The hydraulic control assembly also includes: The rear door oil cylinder can drive the opening and closing of the rear door, and is connected to the oil pump and the oil return oil circuit through a third reversing valve.

6. The cleaning vehicle according to claim 5, characterized in that: The rodless chamber of the rear door oil cylinder and the first oil port of the third reversing valve are respectively connected to the third oil port of the second reversing valve, and the rod chamber of the rear door oil cylinder and the second oil port of the third reversing valve are respectively connected to the fourth oil port of the second reversing valve; The hydraulic control assembly also includes: The third sequential valve is connected between the fourth oil port of the first reversing valve and the rod chamber of the rear door cylinder, and controls the oil inlet pressure of the rod chamber of the rear door cylinder to be higher than the oil inlet pressure of the fourth oil port of the second reversing valve.

7. The cleaning vehicle according to claim 6, characterized in that: The third reversing valve is an electromagnetic reversing valve, and the cleaning vehicle further comprises: An electric control component, communicatively connected to the third reversing valve; a second induction switch, mounted on the vehicle body, for detecting the position of the box and communicatively connected to the electric control assembly; and a third induction switch, mounted on the second support, for detecting the position of the anti-collision device and being communicatively connected to the electric control assembly; Wherein, the electric control component is configured to: when the second induction switch detects that the box is in the original position, control the rear door cylinder through the third reversing valve to open the rear door; and When the third induction switch detects that the anti-collision device is in the original position, the rear door cylinder is controlled by the third reversing valve to close the rear door.

8. The cleaning vehicle according to claim 6, characterized in that: The anti-collision device can make pitching motion relative to the vehicle body and can be kept in a horizontal position or a vertical position relative to the ground, respectively. The hydraulic control component also includes: The first pitch oil cylinder and the second pitch oil cylinder are respectively connected to the oil pump and the oil return oil circuit through a fifth reversing valve, and are used to drive the pitching movement of the anti-collision device.

9. The cleaning vehicle according to claim 8, characterized in that: The hydraulic control assembly also includes: A first balancing valve group, arranged in the oil circuit between the first pitch oil cylinder and the fifth reversing valve; and The second balancing valve group is arranged in the oil circuit between the second pitch cylinder and the fifth reversing valve.

10. The cleaning vehicle according to claim 8, characterized in that: The first reversing valve, the second reversing valve, the third reversing valve and the fifth reversing valve are all three-position four-way electromagnetic reversing valves, and the cleaning vehicle further includes: The electric control component is communicatively connected to the first reversing valve, the second reversing valve, the third reversing valve and the fifth reversing valve.

11. The cleaning vehicle according to claim 6, characterized in that: The first sequence valve, the second sequence valve and the third sequence valve are all one-way sequence valves.

12. The cleaning vehicle according to claim 5, characterized in that: The hydraulic control assembly also includes: The first hydraulic lock is arranged in the oil circuit between the second reversing valve and the third reversing valve.

13. The cleaning vehicle according to claim 1, characterized in that: The hydraulic control assembly also includes: A second hydraulic lock is provided in the oil circuit between the first reversing valve and the lifting cylinder; and The flow control valve is arranged in the oil circuit between the second hydraulic lock and the lifting cylinder, and is composed of two one-way throttle valves connected in parallel.

14. An operating method for a cleaning vehicle with an anti-collision device, used for controlling the cleaning vehicle as claimed in claim 9, characterized in that: The operation method comprises: Before tilting the box to dump the garbage, first swing the anti-collision device to a swing position; and After the box is reset to its original position, the anti-collision device is reset to its original position.

15. The operating method according to claim 14, characterized in that: The operation method also includes: Before swinging the anti-collision device to the swinging position, firstly enabling the latch to unlock the anti-collision device; and After resetting the anti-collision device to the original position, the latch is used to lock the anti-collision device.

16. The operating method according to claim 15, characterized in that: The operation method also includes: Before tilting the box to dump garbage, after swinging the anti-collision device to the swinging position, opening the rear door; After resetting the box to its original position and before resetting the anti-collision device to its original position, keeping the rear door in an open state; and After the anti-collision device is locked using the latch, the rear door is closed.

17. The operating method according to claim 16, characterized in that: The operation method also includes: When the anti-collision device is tilted, driving the anti-collision device to a horizontal position; and According to the need for the pitch state of the anti-collision device, the pitch state of the anti-collision device is selectively adjusted to a horizontal position or a vertical position.

18. An operating method for a cleaning vehicle with an anti-collision device, used for controlling the cleaning vehicle as claimed in claim 10, characterized in that: The operation method in the garbage dumping condition includes: The third reversing valve is adjusted to be in the first working position, and the second reversing valve is adjusted to be in the first working position, and oil is supplied to the rod chamber of the locking oil cylinder to cancel the locking of the anti-collision device by the latch; When the oil pressure exceeds the oil pressure passing through the first sequence valve, oil is supplied to the rodless chamber of the sway cylinder, so that when the anti-collision device is in a horizontal position, the sway cylinder drives the anti-collision device to the sway position; when the oil pressure exceeds the oil pressure passing through the third sequence valve, oil is supplied to the rod chamber of the rear door cylinder, so that the rear door cylinder opens the rear door; and The first reversing valve is adjusted to be in a first working position, and oil is supplied to the rod chamber of the lifting cylinder, thereby tilting the box to dump garbage.

19. An operating method of a sweeper according to claim 18, characterized in that: The operation method in the reset condition includes: Adjusting the first reversing valve to be in the second working position to supply oil to the rod chamber of the lifting cylinder, thereby resetting the box body; Adjusting the third reversing valve to be in the first working position to supply oil to the rodless chamber of the rear door oil cylinder, thereby keeping the rear door in an open state; Adjusting the second reversing valve to be in the second working position to supply oil to the rod chamber of the sway oil cylinder, thereby resetting the anti-collision device; When the oil pressure exceeds the passing oil pressure of the second sequence valve, oil is supplied to the rodless chamber of the locking oil cylinder, so that the latch locks the anti-collision device; and The third reversing valve is adjusted to be in the second working position to supply oil to the rodless chamber of the rear door oil cylinder, thereby closing the rear door.

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