Three-way dump truck

Abstract

The present invention relates to the technical field of automobile toys, and in particular to a three-way dump truck, comprising a bucket, a telescopic device and a frame chassis, wherein the bucket is provided with a left box door, a right box door and a rear box door, the telescopic device is movably connected between the frame chassis and the bucket for driving the bucket to rise and fall, and the frame chassis is provided with a left pin shaft and a right pin shaft; a left unhooking mechanism, a right unhooking mechanism and a left-right swinging clutch mechanism are provided below the bucket, the left unhooking mechanism is connected with a left lock hook for locking the left box door, and the right unhooking mechanism is connected with a right lock hook for locking the right box door; the left-right swinging clutch mechanism can be connected with the left pin shaft, so that the bucket can tilt to the left around the axis of the left pin shaft when it is raised, and the left unhooking mechanism drives the left lock hook to disengage from the left box door. The three-way dump truck provided by the present invention can open the left box door while the bucket tilts and flips to the left, and open the right box door while the bucket tilts and flips to the right, and the action is coherent and interesting.

Description

Technical Field

[0001] The invention relates to the technical field of automobile toys, in particular to a three-way dump truck. Background Art

[0002] At present, there are many kinds of car toys, and the degree of simulation is getting higher and higher. For a three-way dump truck, when the bucket tilts to the left and right to unload, it is necessary to first open the door lock of the corresponding door of the bucket, and then turn it over accordingly. The operation is relatively complicated, and the consistency and interest are not strong. Summary of the invention

[0003] The purpose of the present invention is to provide a three-way dump truck to alleviate the technical problems in the prior art that when the truck bed is tilted to the left or right to unload, the door locks of the corresponding doors of the truck bed need to be opened first, and then the corresponding flipping needs to be performed, which results in complicated operation, poor continuity and interest.

[0004] Based on the above purpose, the present invention provides a three-way dump truck, including a truck bucket, a telescopic device and a frame chassis, wherein the truck bucket is provided with a left box door, a right box door and a rear box door, the telescopic device is movably connected between the frame chassis and the truck bucket, and is used to drive the truck bucket to rise and fall, and the frame chassis is provided with a left pin shaft and a right pin shaft; a left unhooking mechanism, a right unhooking mechanism and a left-right swinging clutch mechanism are provided below the truck bucket, the left unhooking mechanism is connected with a left locking hook for locking the left box door, and the right unhooking mechanism is connected with a right locking hook for locking the right box door;

[0005] The left-right swinging clutch mechanism can be connected to the left pin shaft, so that the bucket can tilt to the left around the axis of the left pin shaft when raised, and the left-side unhooking mechanism can drive the left lock hook to disengage from the left box door, or the left-right swinging clutch mechanism can be connected to the right pin shaft, so that the bucket can tilt to the right around the axis of the right pin shaft when raised, and the right-side unhooking mechanism can drive the right lock hook to disengage from the right box door.

[0006] Further, in certain optional embodiments, the left and right swinging clutch mechanism includes a driving mechanism, a first connecting rod, a second connecting rod, a third connecting rod, a swing shaft and a clutch plate, the driving mechanism is fixedly mounted on the lower surface of the bottom plate of the truck bed, the power output shaft of the driving mechanism is fixedly connected to one end of the first connecting rod, and the length direction of the first connecting rod is perpendicular to the axis of the power output shaft, the other end of the first connecting rod is connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is fixedly connected to the swing shaft, the swing shaft is fixedly connected to the truck bed, and the axis of the swing shaft is perpendicular to the axis of the power output shaft; the clutch plate is connected to the swing shaft, one end of the clutch plate is provided with a first slot, the other end of the clutch plate is provided with a second slot, and the swing shaft can drive the clutch plate to swing left and right, so that the first slot is connected to the left pin shaft, or the second slot is connected to the right pin shaft.

[0007] Further, in certain optional embodiments, the left and right swing clutch mechanism also includes a fourth connecting rod and a fifth connecting rod, one end of the swing shaft is fixedly connected to one end of the fourth connecting rod, the fourth connecting rod is perpendicular to the swing shaft, the fourth connecting rod is provided with an oblong hole, one end of the fifth connecting rod is fixedly connected to the clutch plate, the other end of the fifth connecting rod is connected to the fourth connecting rod, and the fifth connecting rod can reciprocate along the length direction of the oblong hole.

[0008] Furthermore, in certain optional embodiments, a rear flip shaft is arranged above the frame chassis, the left pin shaft is fixedly arranged at the left end of the rear flip shaft, and the right pin shaft is fixedly arranged at the right end of the rear flip shaft.

[0009] Further, in certain optional embodiments, the left-side uncoupling mechanism includes an elastic member, a linkage plate, a rotating shaft and an opening and closing linkage mechanism, one end of the elastic member is fixedly connected to the bottom plate of the truck bucket, the other end of the elastic member is connected to the linkage plate, the linkage plate is fixedly connected to the rotating shaft, and the left lock hook is fixedly connected to the rotating shaft; the opening and closing linkage mechanism is rotatably mounted on the lower surface of the bottom plate of the truck bucket, one end of the opening and closing linkage mechanism is connected to the rotating shaft, and the opening and closing linkage mechanism can rotate relative to the bottom plate of the truck bucket so that the rotating shaft rotates around its own axis in the direction of disengaging the left lock hook from the left box door, wherein the elastic member can undergo elastic deformation to separate the left lock hook from the left box door.

[0010] Further, in some optional embodiments, a left limit plate is provided on the frame chassis; the clutch plate is connected to a movable limit plate;

[0011] The opening and closing linkage mechanism comprises a support, a first connection part, a second connection part and a third connection part, the support is fixedly connected to the lower surface of the bottom plate of the bucket, the first connection part is hinged to the support, one end of the second connection part is hinged to the first connection part, the other end of the second connection part is hinged to one end of the third connection part, and the other end of the third connection part is fixed to the rotating shaft; the movable limiting plate can be away from the first connection part, so that the first connection part rotates relative to the support, and drives the rotating shaft to rotate around its own axis along the direction of disengaging the left lock hook from the left box door;

[0012] The first connecting portion can abut against the upper surface of the left limiting plate when the left door is closed, and drive the rotating shaft to rotate around its own axis in a direction that brings the left locking hook closer to the left door, so that the left locking hook locks the left door.

[0013] Furthermore, in certain optional embodiments, the three-way dump truck also includes a limiting mechanism, which includes a travel switch and a pressure plate, the travel switch is arranged on the frame chassis, the position between the two ends of the pressure plate is hinged to the frame chassis through a hinge shaft, and a pressing portion is provided on the lower surface of the bottom plate of the truck bucket, and the pressing portion can abut against one end of the pressure plate to rotate the pressure plate around the hinge shaft, and the other end of the pressure plate is used to trigger the travel switch, and the travel switch is connected to the telescopic device.

[0014] Furthermore, in certain optional embodiments, the upper edge of the left door is provided with a door hinge shaft, and the lower edge of the left door is provided with a left lock pin for cooperating with the left lock hook.

[0015] Further, in certain optional embodiments, the telescopic device is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is connected to the frame chassis via a first universal joint, and a piston rod of the hydraulic cylinder is connected to the bottom plate of the truck bed via a second universal joint.

[0016] Further, in certain optional embodiments, the elastic member is a tension spring.

[0017] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0018] The three-way dump truck provided by the present invention comprises a bucket, a telescopic device and a frame chassis, the bucket being provided with a left box door, a right box door and a rear box door, the telescopic device being movably connected between the frame chassis and the bucket for driving the bucket to rise and fall, and the frame chassis being provided with a left pin shaft and a right pin shaft; a left-side unhooking mechanism, a right-side unhooking mechanism and a left-right swinging clutch mechanism are provided below the bucket, the left-side unhooking mechanism being connected with a left locking hook for locking the left box door, and the right-side unhooking mechanism being connected with a right locking hook for locking the right box door; the left-right swinging clutch mechanism can be connected with the left pin shaft so that the bucket can tilt to the left around the axis of the left pin shaft when being raised, and the left-side unhooking mechanism drives the left locking hook to be disengaged from the left box door, or the left-right swinging clutch mechanism can be connected with the right pin shaft so that the bucket can tilt to the right around the axis of the right pin shaft when being raised, and the right-side unhooking mechanism drives the right locking hook to be disengaged from the right box door.

[0019] Based on this structure, the three-way dump truck provided by the present invention can open the left box door while the bucket tilts and flips to the left, and open the right box door while the bucket tilts and flips to the right, with continuous actions, simple operation, and strong interest. Taking the bucket tilting and flipping to the left as an example, the telescopic device drives the bucket to rise to the right position, and the left and right swinging clutch mechanism is connected to the left pin shaft, so that the bucket can tilt to the left around the axis of the left pin shaft, and at the same time, the left unhooking mechanism drives the left lock hook to disengage from the left box door. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of a three-way dump truck provided by an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of point E in the middle;

[0023] Figure 3 for Figure 1 A partial enlarged view of the F in the middle;

[0024] Figure 4 for Figure 1 A partial enlarged view of the G in the middle;

[0025] Figure 5 A schematic structural diagram of a three-way dump truck from another perspective provided by an embodiment of the present invention;

[0026] Figure 6 for Figure 5 A partial enlarged view of the H in the middle;

[0027] Figure 7 A front view of a three-way dump truck provided by an embodiment of the present invention with the bucket turned over to the left;

[0028] Figure 8 A rear view of a three-way dump truck provided by an embodiment of the present invention with the bucket flipped to the left;

[0029] Fig. 9 A schematic diagram of the structure of a three-way dump truck with the bucket flipped to the left provided by an embodiment of the present invention;

[0030] Fig.10 for Fig. 9 A partial enlarged view of the K in the middle;

[0031] Fig.11 for Fig. 9 A partial enlarged view of the M in the middle;

[0032] Fig.12 A schematic diagram of the structure of the three-way dump truck with the bucket flipped backwards provided in an embodiment of the present invention.

[0033] Icons: 101-truck box; 102-telescopic device; 103-frame chassis; 104-left box door; 105-right box door; 106-rear box door; 107-left lock hook; 108-right lock hook; 109-stop column; 110-left lock pin; 111-first left pin shaft; 112-second left pin shaft; 113-first right pin shaft; 114-second right pin shaft; 115-rear tilting shaft; 116-driving mechanism; 117-first connecting rod; 118-second connecting rod; 119-third connecting rod; 120-swinging shaft; 121-first clutch plate; 122-second clutch plate; 123- The fourth connecting rod; 124-the fifth connecting rod; 125-elastic member; 126-linkage plate; 127-rotating shaft; 128-left frame; 129-right frame; 130-left limit plate; 131-movable limit plate; 132-support; 133-first connecting part; 134-second connecting part; 135-third connecting part; 136-travel switch; 137-pressure plate; 139-first shaft; 140-second universal joint; 141-first rotating ring; 142-second rotating ring; 143-longitudinal beam; 144-first clamping plate; 145-second clamping plate; 146-second slot. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The direction definitions in this embodiment: "left" refers to the left side of the three-way dump truck, "right" refers to the right side of the three-way dump truck, "front" refers to the front end of the three-way dump truck, i.e. the front of the vehicle, "rear" refers to the rear end of the three-way dump truck, i.e. the tail of the vehicle, "above" refers to the direction away from the ground when the three-way dump truck is moving on the ground, and "below" refers to the direction close to the ground when the three-way dump truck is moving on the ground.

[0038] See also Figures 1 to 12As shown, this embodiment provides a three-way dump truck, including a truck bucket 101, a telescopic device 102 and a frame chassis 103. The truck bucket 101 is provided with a left box door 104, a right box door 105 and a rear box door 106. The telescopic device 102 is movably connected between the frame chassis 103 and the truck bucket 101, and is used to drive the truck bucket 101 to rise and fall. The frame chassis 103 is provided with a left pin shaft and a right pin shaft; a left unhooking mechanism, a right unhooking mechanism and a left-right swing clutch mechanism are provided below the truck bucket 101, and the left unhooking mechanism is connected with a mechanism for locking the truck bucket 101. The left lock hook 107 of the left box door 104 and the right unhooking mechanism are connected with the right lock hook 108 for locking the right box door 105; the left-right swinging clutch mechanism can be connected with the left pin shaft, so that the bucket 101 can tilt to the left around the axis of the left pin shaft when it is raised, and the left unhooking mechanism drives the left lock hook 107 to disengage from the left box door 104, or the left-right swinging clutch mechanism can be connected with the right pin shaft, so that the bucket 101 can tilt to the right around the axis of the right pin shaft when it is raised, and the right unhooking mechanism drives the right lock hook 108 to disengage from the right box door 105.

[0039] Based on this structure, the three-way dump truck provided in this embodiment can open the left box door 104 while the bucket 101 tilts and turns to the left, and open the right box door 105 while the bucket 101 tilts and turns to the right, with continuous actions, simple operation, and strong interest. Taking the bucket 101 tilting and turning to the left as an example, the left and right swinging clutch mechanism is connected to the left pin shaft, and the telescopic device 102 drives the bucket 101 to rise to the position, so that the bucket 101 can tilt to the left around the axis of the left pin shaft, and at the same time, the left unhooking mechanism drives the left lock hook 107 to disengage from the left box door 104.

[0040] Furthermore, in certain optional embodiments, a door hinge axis is disposed at the upper edge of the left door 104 , and a left lock pin 110 for cooperating with the left lock hook 107 is disposed at the lower edge of the left door 104 .

[0041] The left door 104 is hinged to the vehicle body frame via a hinge shaft. When the left unhooking mechanism drives the left lock hook 107 to disengage the left lock pin 110 on the left door 104, the left door 104 can rotate outward around the hinge shaft under the action of its own gravity and open.

[0042] It should be noted that the opening method of the right door 105 is the same as the opening method of the left door 104, and the opening method of the rear door 106 is similar to the opening method of the left door 104. Fig.12 As shown, no further details are given here.

[0043] Furthermore, in certain optional embodiments, a rear flip shaft 115 is disposed above the frame chassis 103 , a left pin shaft is fixedly disposed at the left end of the rear flip shaft 115 , and a right pin shaft is fixedly disposed at the right end of the rear flip shaft 115 .

[0044] The open state of the rear door 106 is as follows: Fig.12 As shown, when flipping backward, the bucket 101 flips around the rear flip axis 115 as the axis.

[0045] In this embodiment, the axis of the left pin shaft and the axis of the right pin shaft are both parallel to the length direction of the bucket 101.

[0046] Specifically, there are two left pin shafts, namely, a first left pin shaft 111 and a second left pin shaft 112, the first left pin shaft 111 is located at the rear end of the frame chassis 103, and the second left pin shaft 112 is located at the front end of the frame chassis 103; there are two right pin shafts, namely, a first right pin shaft 113 and a second right pin shaft 114, the first right pin shaft 113 is located at the rear end of the frame chassis 103, and the second right pin shaft 114 is located at the front end of the frame chassis 103; a pin shaft mounting frame is arranged above the front end of the frame chassis 103, and the rear flip shaft 115 is located at the rear end of the frame chassis 103, wherein the first left pin shaft 111 is fixedly arranged at the left end of the rear flip shaft 115, the second left pin shaft 112 is fixedly arranged at the left end of the pin shaft mounting frame, the first right pin shaft 113 is fixedly arranged at the right end of the rear flip shaft 115, and the second right pin shaft 114 is fixedly arranged at the right end of the pin shaft mounting frame.

[0047] A first groove is provided at the left end of the rear flip shaft 115 , a second groove is provided at the right end of the rear flip shaft 115 , the first left pin 111 is fixed inside the first groove, and the first right pin 113 is fixed inside the second groove.

[0048] The pin shaft mounting frame includes a first clamping plate 144 and a second clamping plate 145 , the length direction of the first clamping plate 144 and the second clamping plate 145 are parallel to the width direction of the truck bucket 101 , and the second left pin shaft 112 and the second right pin shaft 114 are fixedly connected between the first clamping plate 144 and the second clamping plate 145 .

[0049] Further, in some optional embodiments, the left and right swing clutch mechanism includes a driving mechanism 116, a first connecting rod 117, a second connecting rod 118, a third connecting rod 119, a swing shaft 120 and a clutch plate, the driving mechanism 116 is fixedly mounted on the lower surface of the bottom plate of the bucket 101, the power output shaft of the driving mechanism 116 is fixedly connected to one end of the first connecting rod 117, and the length direction of the first connecting rod 117 is perpendicular to the axis of the power output shaft, the other end of the first connecting rod 117 is connected to one end of the second connecting rod 118, and the second connecting rod 119 is connected to one end of the second connecting rod 118. The other end of the rod 118 is rotatably connected to one end of the third connecting rod 119, and the other end of the third connecting rod 119 is fixedly connected to the swing shaft 120. The swing shaft 120 is fixedly connected to the truck bucket 101, and the axis of the swing shaft 120 is perpendicular to the axis of the power output shaft; the clutch plate is connected to the swing shaft 120, and a first slot is provided at one end of the clutch plate, and a second slot 146 is provided at the other end of the clutch plate. The swing shaft 120 can drive the clutch plate to swing left and right, so that the first slot is connected to the left pin shaft, or the second slot 146 is connected to the right pin shaft.

[0050] In this embodiment, there are two clutch plates, namely a first clutch plate 121 and a second clutch plate 122 . The first clutch plate 121 is connected to the rear end of the swing shaft 120 , and the second clutch plate 122 is connected to the front end of the swing shaft 120 .

[0051] See also Figure 2 and Figure 6 As shown, when the power output shaft of the driving mechanism 116 rotates a set angle (for example, 45°) in the arrow direction A, the first connecting rod 117 pushes the second connecting rod 118 to the right, and the second connecting rod 118 drives the third connecting rod 119 to move to the right and rotate a certain angle, and the third connecting rod 119 drives the swing shaft 120 to swing a certain angle, and the swing shaft 120 drives the first clutch plate 121 and the second clutch plate 122 to move to the right, so that the first left pin shaft 111 is limited in the first slot of the first clutch plate 121, and the second left pin shaft 112 is limited in the first slot of the second clutch plate 122. Optionally, the first left pin shaft 111 contacts the bottom of the first slot, the second slot 146 of the first clutch plate 121 is disengaged from the first right pin shaft 113, and the second slot 146 of the second clutch plate 122 is disengaged from the second right pin shaft 114.

[0052] When the axis of the first left pin 111 coincides with the axis of the second left pin 112 , the bucket 101 will flip to the left at a set angle (eg, 45°) around the axis of the integral axis formed by the first left pin 111 and the second left pin 112 .

[0053] The process of flipping the bucket 101 to the right is similar to the process of flipping to the left, which will not be repeated here.

[0054] In this embodiment, the driving mechanism 116 is a servo motor.

[0055] Furthermore, in certain optional embodiments, the left and right swing clutch mechanism also includes a fourth connecting rod 123 and a fifth connecting rod 124, one end of the swing shaft 120 is fixedly connected to one end of the fourth connecting rod 123, the fourth connecting rod 123 is perpendicular to the swing shaft 120, the fourth connecting rod 123 is provided with an oblong hole, one end of the fifth connecting rod 124 is fixedly connected to the clutch plate, the other end of the fifth connecting rod 124 is connected to the fourth connecting rod 123, and the fifth connecting rod 124 can reciprocate along the length direction of the oblong hole.

[0056] In this embodiment, the rear end of the swing shaft 120 is fixedly connected to one end of the fourth connecting rod 123. When the swing shaft 120 swings to the right, it drives the fourth connecting rod 123 to move to the right. The fourth connecting rod 123 moves relative to the fifth connecting rod 124, that is, the fifth connecting rod 124 can reciprocate along the length direction of the oblong hole. After the hole wall of the oblong hole abuts against the fifth connecting rod 124, it can drive the fifth connecting rod 124 to move to the right, thereby driving the first clutch plate 121 to move to the right.

[0057] It should be noted that the front end of the swing shaft 120 is also provided with the same structure as the fourth connecting rod 123 and the fifth connecting rod 124 , thereby driving the second clutch plate 122 to move accordingly.

[0058] Further, in certain optional embodiments, the left uncoupling mechanism includes an elastic member 125, a linkage plate 126, a rotating shaft 127 and an opening and closing linkage mechanism, one end of the elastic member 125 is fixedly connected to the bottom plate of the truck bucket 101, the other end of the elastic member 125 is connected to the linkage plate 126, the linkage plate 126 is fixedly connected to the rotating shaft 127, and the left lock hook 107 is fixedly connected to the rotating shaft 127; the opening and closing linkage mechanism is rotatably mounted on the lower surface of the bottom plate of the truck bucket 101, one end of the opening and closing linkage mechanism is connected to the rotating shaft 127, and the opening and closing linkage mechanism can rotate relative to the bottom plate of the truck bucket 101 so that the rotating shaft 127 rotates around its own axis in the direction of disengaging the left lock hook 107 from the left box door 104, wherein the elastic member 125 can undergo elastic deformation to separate the left lock hook 107 from the left box door 104.

[0059] In this embodiment, a support frame is provided on the lower surface of the bottom plate of the truck bed 101, and the support frame includes a left frame body 128 and a right frame body 129. One end of the elastic member 125 in the left unhooking mechanism is fixedly connected to the left frame body 128, and the other end of the elastic member 125 is connected to the linkage plate 126. When the truck bed 101 is in the middle position, the elastic member 125 is in a stretched state.

[0060] The opening and closing linkage mechanism rotates relative to the bottom plate of the truck bed 101, so that the rotating shaft 127 tends to rotate around its own axis in the direction of disengaging the left lock hook 107 from the left box door 104. At the same time, the elastic member 125 can restore its original state and drive the rotating shaft 127 to rotate around its own axis in the direction of disengaging the left lock hook 107 from the left box door 104 through the linkage plate 126 until the left lock hook 107 is completely separated from the left lock pin 110.

[0061] Further, in some optional embodiments, the elastic member 125 is a tension spring.

[0062] It should be noted that the structure of the right-side unhooking mechanism is the same as that of the left-side unhooking mechanism, which will not be described in detail here.

[0063] Further, in some optional embodiments, a left limit plate 130 is provided on the frame chassis 103; the clutch plate is connected to a movable limit plate 131; the opening and closing linkage mechanism includes a support 132, a first connecting portion 133, a second connecting portion 134 and a third connecting portion 135, the support 132 is fixedly connected to the lower surface of the bottom plate of the bucket 101, the first connecting portion 133 is hinged to the support 132, one end of the second connecting portion 134 is hinged to the first connecting portion 133, the other end of the second connecting portion 134 is hinged to one end of the third connecting portion 135, and the third connecting portion 135 is hinged to the first connecting portion 133. The other end is fixed on the rotating shaft 127; the movable limiting plate 131 can be moved away from the first connecting part 133, so that the first connecting part 133 can rotate relative to the support 132, and drive the rotating shaft 127 to rotate around its own axis along the direction of disengaging the left lock hook 107 from the left box door 104; the first connecting part 133 can abut against the upper surface of the left limiting plate 130 when the left box door 104 is closed, and drive the rotating shaft 127 to rotate around its own axis along the direction of approaching the left lock hook 107 to the left box door 104, so that the left lock hook 107 locks the left box door 104.

[0064] Specifically, the clutch plate is fixedly connected to the movable limiting plate 131, and the movable limiting plate 131 is located below the first connecting portion 133. When the bucket 101 is not turned over, the lower surface of the end of the first connecting portion 133 away from the rotating shaft 127 abuts against the upper surface of the movable limiting plate 131; when the clutch plate moves to the right, the movable limiting plate 131 also moves to the right and separates from the first connecting portion 133. Figure 3 and Figure 6As shown, when the telescopic device 102 lifts the truck bed 101 upward, the first connection part 133 is separated from the left limit plate 130, and the first connection part 133 can rotate around the hinge axis between it and the support 132 along the arrow direction B, and then drive the rotating shaft 127 to rotate around its own axis along the arrow direction C through the second connection part 134 and the third connection part 135. At the same time, the elastic member 125 can restore its original state and drive the rotating shaft 127 to rotate around its own axis along the direction of disengaging the left lock hook 107 from the left box door 104 through the linkage plate 126 until the left lock hook 107 is completely separated from the left lock pin 110.

[0065] When the bucket 101 turns back to the normal position from the left side, the telescopic device 102 first lowers the bucket 101 to the initial position. At this time, the left door 104 is closed under its own gravity, and the first connecting portion 133 abuts against the upper surface of the left limit plate 130, and drives the rotating shaft 127 to rotate around its own axis in the direction of bringing the left lock hook 107 and the left door 104 closer, so that the left lock hook 107 locks the left door 104. While the rotating shaft 127 rotates around its own axis in the direction of bringing the left lock hook 107 and the left door 104 closer, the linkage plate 126 puts the tension spring in a tensioned state.

[0066] Optionally, the first connection portion 133 is provided with a stopper post 109 , and the stopper post 109 abuts against the upper surface of the left limiting portion.

[0067] Furthermore, in certain optional embodiments, the three-way dump truck also includes a limiting mechanism, which includes a travel switch 136 and a pressure plate 137. The travel switch 136 is arranged on the frame chassis 103, and the position between the two ends of the pressure plate 137 is hinged to the frame chassis 103 through a hinge shaft. A pressing portion is provided on the lower surface of the bottom plate of the truck bed 101, and the pressing portion can abut against one end of the pressure plate 137 to rotate the pressure plate 137 around the hinge shaft. The other end of the pressure plate 137 is used to trigger the travel switch 136, and the travel switch 136 is connected to the telescopic device 102.

[0068] In this embodiment, the travel switch 136 is fixed on the pin shaft mounting frame, and the position between the two ends of the pressure plate 137 is hinged to the pin shaft mounting frame through the first axis 139, and the first hinge axis is located between the second left pin shaft 112 and the travel switch 136.

[0069] In this embodiment, the pressing portion and the second clutch plate 122 are integrally formed, and the lower surface of the pressing portion abuts against the upper surface of the end of the pressing plate 137 away from the limit switch 136, so that the pressing plate 137 rotates around the first axis 139 along the arrow direction D, and the other end of the pressing plate 137 can trigger the limit switch 136, and the limit switch 136 is connected to the telescopic device 102.

[0070] When the travel switch 136 is triggered, the telescopic device 102 stops working, thereby controlling the flipping angle.

[0071] Furthermore, in certain optional embodiments, the telescopic device 102 is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is connected to the frame chassis 103 via a first universal joint, and the piston rod of the hydraulic cylinder is connected to the bottom plate of the truck bucket 101 via a second universal joint 140.

[0072] Specifically, see Fig. 9 As shown, the first universal joint includes a first rotating ring 141 and a second rotating ring 142. The first rotating ring 141 is rotatably connected to the two longitudinal beams 143 of the frame chassis 103 through two first connecting shafts, and the axes of the two first connecting shafts coincide and pass through the center of the first rotating ring 141; the second rotating ring 142 is rotatably connected to the inside of the first rotating ring 141 through two second connecting shafts, and the axes of the two second connecting shafts coincide and pass through the center of the second rotating ring 142, and the axes of the second connecting shafts are perpendicular to the axes of the first connecting shafts.

[0073] The second universal joint 140 is a conventional ball joint.

[0074] In order to clearly illustrate the structure of the three-way dump truck provided in this embodiment, Figure 5 A longitudinal beam and a baffle plate located on a side of the first clutch plate close to the drive mechanism are omitted.

[0075] When the bucket 101 is tipped backward, the first left pin 111 and the first slot are in a semi-tightened state, that is, the first left pin 111 is located inside the first slot but does not contact the bottom of the first slot, and the first right pin 113 and the second slot 146 are in a semi-tightened state, that is, the first right pin 113 is located inside the second slot 146 but does not contact the bottom of the second slot 146. This ensures that the left door 104 and the right door 105 will not open when tipping backward.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-way dump truck, comprising a bucket, a telescopic device and a frame chassis, wherein the bucket is provided with a left door, a right door and a rear door, and the telescopic device is movably connected between the frame chassis and the bucket to drive the bucket to rise and fall, characterized in that: The frame chassis is provided with a left pin shaft and a right pin shaft; a left unhooking mechanism, a right unhooking mechanism and a left-right swing clutch mechanism are provided below the bucket, the left unhooking mechanism is connected with a left lock hook for locking the left box door, and the right unhooking mechanism is connected with a right lock hook for locking the right box door; The left-right swing clutch mechanism can be connected to the left pin shaft, so that the bucket can tilt to the left around the axis of the left pin shaft when it is raised, and the left-side unhooking mechanism drives the left lock hook to disengage from the left box door, or the left-right swing clutch mechanism can be connected to the right pin shaft, so that the bucket can tilt to the right around the axis of the right pin shaft when it is raised, and the right-side unhooking mechanism drives the right lock hook to disengage from the right box door; The left-right swing clutch mechanism comprises a driving mechanism, a first connecting rod, a second connecting rod, a third connecting rod, a swing shaft and a clutch plate, the driving mechanism is fixedly mounted on the lower surface of the bottom plate of the bucket, the power output shaft of the driving mechanism is fixedly connected to one end of the first connecting rod, and the length direction of the first connecting rod is perpendicular to the axis of the power output shaft, the other end of the first connecting rod is connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is fixedly connected to the swing shaft, the swing shaft is fixedly connected to the bucket, and the axis of the swing shaft is perpendicular to the axis of the power output shaft; the clutch plate is connected to the swing shaft, one end of the clutch plate is provided with a first slot, and the other end of the clutch plate is provided with a second slot, and the swing shaft can drive the clutch plate to swing left and right, so that the first slot is connected to the left pin shaft, or the second slot is connected to the right pin shaft; The left-right swing clutch mechanism also includes a fourth connecting rod and a fifth connecting rod, one end of the swing shaft is fixedly connected to one end of the fourth connecting rod, the fourth connecting rod is perpendicular to the swing shaft, the fourth connecting rod is provided with an oblong hole, one end of the fifth connecting rod is fixedly connected to the clutch plate, the other end of the fifth connecting rod is connected to the fourth connecting rod, and the fifth connecting rod can reciprocate along the length direction of the oblong hole; The left-side unhooking mechanism includes an elastic member, a linkage plate, a rotating shaft and an opening and closing linkage mechanism, one end of the elastic member is fixedly connected to the bottom plate of the bucket, the other end of the elastic member is connected to the linkage plate, the linkage plate is fixedly connected to the rotating shaft, and the left lock hook is fixedly connected to the rotating shaft; the opening and closing linkage mechanism is rotatably mounted on the lower surface of the bottom plate of the bucket, one end of the opening and closing linkage mechanism is connected to the rotating shaft, and the opening and closing linkage mechanism can rotate relative to the bottom plate of the bucket so that the rotating shaft rotates around its own axis in the direction of disengaging the left lock hook from the left box door, wherein the elastic member can undergo elastic deformation to separate the left lock hook from the left box door.

2. The three-way dump truck according to claim 1, characterized in that: A rear flip shaft is arranged above the frame chassis, the left pin shaft is fixedly arranged at the left end of the rear flip shaft, and the right pin shaft is fixedly arranged at the right end of the rear flip shaft.

3. The three-way dump truck according to claim 1, characterized in that: A left limit plate is provided on the frame chassis; a movable limit plate is connected to the clutch plate; The opening and closing linkage mechanism comprises a support, a first connection part, a second connection part and a third connection part, the support is fixedly connected to the lower surface of the bottom plate of the bucket, the first connection part is hinged to the support, one end of the second connection part is hinged to the first connection part, the other end of the second connection part is hinged to one end of the third connection part, and the other end of the third connection part is fixed to the rotating shaft; the movable limiting plate can be away from the first connection part, so that the first connection part rotates relative to the support, and drives the rotating shaft to rotate around its own axis along the direction of disengaging the left lock hook from the left box door; The first connecting portion can abut against the upper surface of the left limiting plate when the left box door is closed, and drive the rotating shaft to rotate around its own axis in a direction that brings the left locking hook closer to the left box door, so that the left locking hook locks the left box door.

4. The three-way dump truck according to claim 1, characterized in that: The three-way dump truck also includes a limiting mechanism, which includes a travel switch and a pressure plate. The travel switch is arranged on the frame chassis, and the position between the two ends of the pressure plate is hinged to the frame chassis through a hinge shaft. A pressing portion is provided on the lower surface of the bottom plate of the truck bucket, and the pressing portion can abut against one end of the pressure plate to rotate the pressure plate around the hinge shaft. The other end of the pressure plate is used to trigger the travel switch, and the travel switch is connected to the telescopic device.

5. The three-way dump truck according to any one of claims 1 to 4, characterized in that: The upper edge of the left door is provided with a door hinge shaft, and the lower edge of the left door is provided with a left lock pin for matching with the left lock hook.

6. The three-way dump truck according to any one of claims 1 to 4, characterized in that: The telescopic device is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is connected to the frame chassis through a first universal joint, and a piston rod of the hydraulic cylinder is connected to the bottom plate of the bucket through a second universal joint.

7. The three-way dump truck according to claim 1, characterized in that: The elastic member is a tension spring.

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