Logistics vehicle turnover mechanism and logistics vehicle

Abstract

The invention relates to the technical field of logistics vehicles, and discloses a logistics vehicle turnover mechanism and a logistics vehicle, the logistics vehicle turnover mechanism comprises a bearing frame, a motor, a speed reduction assembly, a guide frame, a transmission assembly, a connecting assembly and a rotating translation assembly, and the motor is connected with the transmission assembly through the speed reduction assembly; the guide frames are fixed to the chassis platform and located on the two sides of the bearing frame, and guide grooves are formed in the guide frames. The transmission assembly is in transmission connection with the output end of the speed reduction assembly, and the transmission direction is parallel to the guide groove; the connecting assembly is connected to the transmission assembly, one end of the connecting assembly is hinged to the bearing frame, and the other end is movably arranged in the guide groove; the rotating translation assembly comprises a sliding rail, a sliding block and a rotating piece, the sliding rail is fixed to the bottom of the bearing frame, one end of the rotating piece is fixedly connected with the sliding block, and the other end of the rotating piece is hinged to the chassis platform. The turnover and translation mechanism is simple in structure, safe and reliable, turnover and translation movement can be conducted at the same time, mechanism dead points do not exist, jamming is not likely to happen, and damage to the logistics vehicle is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics vehicles, and in particular to a turnover mechanism of a logistics vehicle and a logistics vehicle. Background Art

[0002] With the development of the logistics industry, the amount of goods transported by unmanned logistics vehicles is increasing. In order to realize the automatic loading and unloading of cage trucks and other goods, a flipping mechanism is usually set on the unmanned logistics vehicle. Most of the existing flipping mechanisms of logistics vehicles are driven by oil cylinders. When loading and unloading is required, a set of oil cylinders is used to drive the load-bearing frame to move backward horizontally, and then another set of oil cylinders is used to drive the load-bearing frame to flip downward until the load-bearing frame reaches the vertical loading and unloading position; when transportation is required, a set of oil cylinders is used to drive the load-bearing frame to flip upward, and then another set of oil cylinders is used to drive the load-bearing frame to move forward horizontally until the load-bearing frame reaches the horizontal transportation position.

[0003] The above-mentioned solution using hydraulic cylinder drive requires more position sensors to ensure that the flipping mechanism is translated into position before flipping or flipping into position before translation. However, once the corresponding position sensor fails or the action sequence between multiple drive mechanisms is improperly set, it is very easy to cause the mechanism to get stuck, thereby causing damage to the logistics vehicle, and there is also a great safety hazard.

[0004] Therefore, there is an urgent need for a logistics vehicle flipping mechanism and a logistics vehicle to solve the above technical problems. Summary of the invention

[0005] Based on the above, the purpose of the present invention is to provide a logistics vehicle flipping mechanism and a logistics vehicle, which have a simple structure, are safe and reliable, can perform flipping and translational movements at the same time, have no dead points in the mechanism, are not prone to jamming, and avoid damage to the logistics vehicle.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The flipping mechanism of the logistics vehicle includes:

[0008] The load-bearing frame is configured to be mounted on the chassis platform of the logistics vehicle and can be flipped between a horizontal conveying position and a vertical loading and unloading position;

[0009] a motor configured to be fixed on the chassis platform;

[0010] A reduction assembly, drivingly connected to the output end of the motor;

[0011] A guide frame, configured to be fixed on the chassis platform and located on both sides of the carrying frame, wherein a guide groove extending along a first direction is arranged in the guide frame, and the guide grooves on both sides are arranged opposite to each other along a second direction, wherein the first direction is inclined backward and upward relative to the length direction of the chassis platform, and the second direction is the width direction of the chassis platform;

[0012] A transmission assembly, which is transmission-connected to the output end of the deceleration assembly and is located on both sides of the carrying frame, and the transmission direction of the transmission assembly is parallel to the guide groove;

[0013] A connecting assembly, connected to the transmission assembly and capable of moving along the first direction with the transmission assembly, one end of the connecting assembly being hinged to the side of the supporting frame, and the other end being movably disposed in the guide groove;

[0014] The rotation and translation assembly includes a slide rail, a slider and a rotating member. The slide rail is fixed to the bottom of the supporting frame and extends along the front-rear direction of the supporting frame. The slider is slidably connected to the slide rail. One end of the rotating member is fixedly connected to the slider, and the other end is hinged to the tail of the chassis platform.

[0015] In some possible embodiments, a first bracket is fixed to the rear end of the guide frame; the transmission assembly includes a first sprocket, a second sprocket and a first chain, the first sprocket is transmission-connected to the output end of the reduction assembly, the second sprocket is rotatably mounted on the first bracket, the first chain is transmission-connected to the first sprocket and the second sprocket, the transmission direction of the first chain is parallel to the guide groove, and the connecting assembly is fixedly connected to the first chain.

[0016] In some possible implementations, a third shaft is provided at the output end of the reduction assembly, and the first sprockets on both sides are respectively installed at two ends of the third shaft.

[0017] In some possible implementations, a second bracket is fixed to the rear of the chassis platform, and the other end of the rotating member is hinged to the second bracket via a rotating shaft.

[0018] In some possible implementations, two groups of the rotation and translation components are provided, and the two groups of the rotation and translation components are arranged at intervals along the second direction at the bottom of the supporting frame.

[0019] In some possible embodiments, the guide frame includes a support frame and a guide shell, the support frame is configured to be fixed on the chassis platform, the guide shell is fixed on the support frame, the guide shell extends along the first direction, the guide groove is opened in the guide shell, and the front and rear ends of the guide groove are closed to limit the movement of the connecting assembly; the first bracket is fixed to the rear end of the guide shell, a fourth shaft is rotatably mounted on the first bracket, and the second sprocket is mounted on the fourth shaft.

[0020] In some possible embodiments, the connecting assembly includes a connecting block and a groove wheel, the connecting block is fixed to the first chain via a chain joint, the groove wheel is provided with a groove wheel shaft, the groove wheel shaft passes through the connecting block and is hinged to the side of the supporting frame, and the wheel portion of the groove wheel is movably arranged in the guide groove.

[0021] In some possible embodiments, an in-place detection component is further included, and the in-place detection component includes a first sensor and a second sensor, the first sensor is installed at the front end of the guide shell, and a first trigger surface is provided on a side of the connecting block close to the front end of the guide shell, and the first trigger surface is used to trigger the first sensor; the second sensor is installed at the rear end of the guide shell, and a second trigger surface is provided on a side of the connecting block close to the rear end of the guide shell, and the second trigger surface is used to trigger the second sensor.

[0022] In some possible implementations, the length of the first chain extending along the first direction is greater than the length of the guide groove; and / or,

[0023] The first bracket is a U-shaped plate structure, and through holes are opened on two side plates of the U-shaped plate structure. The fourth shaft is rotatably installed in the through holes.

[0024] A logistics vehicle comprises a vehicle body, wherein the vehicle body comprises a front end and a chassis platform, wherein the chassis platform is arranged behind the front end, and the logistics vehicle further comprises a logistics vehicle flipping mechanism as described in any of the above schemes, wherein the logistics vehicle flipping mechanism is installed on the chassis platform.

[0025] Beneficial effects of the present invention:

[0026] The flipping mechanism of the logistics vehicle provided by the present invention can drive the transmission component to move in the first direction when the motor rotates, the transmission component can drive the connecting component to slide along the inclined guide groove, and the connecting component can drive the support frame hinged thereon to move. Since the bottom of the support frame is hinged to the chassis platform through the rotating translation component, the support frame can simultaneously perform translation and rotation movements, thereby realizing its switching between the horizontal conveying position and the vertical loading and unloading position. The present invention has a simple structure, is safe and reliable, can simultaneously perform flipping and translation movements, does not have a dead point of the mechanism, avoids the mechanism from getting stuck, and works smoothly, is not prone to jamming, and avoids damage to the logistics vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic diagram of the first state structure of the logistics vehicle provided by an embodiment of the present invention (the load-bearing frame is in a horizontal conveying position);

[0028] Figure 2 is a schematic diagram of the second state structure of the logistics vehicle provided by an embodiment of the present invention (the load-bearing frame is in a vertical loading and unloading position);

[0029] Figure 3 is a schematic diagram of the second state structure of the logistics vehicle provided by an embodiment of the present invention from another perspective (the load-bearing frame is in a vertical loading and unloading position);

[0030] Figure 4 1 is a schematic diagram of the first state structure of the logistics vehicle flipping mechanism provided by an embodiment of the present invention (the load-bearing frame is in a horizontal conveying position);

[0031] Figure 5 1 is a schematic diagram of the second state structure of the flipping mechanism of the logistics vehicle provided by an embodiment of the present invention (the load-bearing frame is in a vertical loading and unloading position);

[0032] Figure 6 It is a structural schematic diagram of a motor, a reduction assembly and a limit block involved in an embodiment of the present invention;

[0033] Figure 7 It is a structural schematic diagram of a bearing frame and a rotation and translation assembly involved in an embodiment of the present invention;

[0034] Figure 8 is a schematic structural diagram of a rotating member involved in an embodiment of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of a guide housing, a transmission assembly and a connection assembly involved in an embodiment of the present invention;

[0036] Fig.10 yes Fig. 9 A partial enlarged view of the middle A;

[0037] Fig.11It is an exploded view of the guide housing, the transmission assembly and the connection assembly involved in the embodiment of the present invention.

[0038] In the figure:

[0039] 100, front of the vehicle; 200, chassis platform; 300, flipping mechanism of the logistics vehicle;

[0040] 1. Load-bearing frame;

[0041] 2. Motor; 21. Motor bracket;

[0042] 30. Speed ​​reduction assembly bracket; 31. First shaft; 32. Third sprocket; 33. Fourth sprocket; 34. Second chain; 35. First bearing assembly;

[0043] 41. second shaft; 42. fifth sprocket; 43. sixth sprocket; 44. third chain; 45. second bearing assembly;

[0044] 51. third shaft; 52. seventh sprocket; 53. eighth sprocket; 54. fourth chain; 55. third bearing assembly;

[0045] 6. Guide frame; 61. Support frame; 62. Guide shell; 63. Guide groove;

[0046] 7. Transmission assembly; 71. First sprocket; 72. Second sprocket; 73. First chain; 74. First bracket; 75. Fourth shaft;

[0047] 8. Connecting assembly; 81. Connecting block; 811. First triggering surface; 812. Second triggering surface; 82. Grooved wheel; 821. Grooved wheel shaft; 83. Chain joint;

[0048] 9. Rotational translation assembly; 91. Slide rail; 92. Sliding block; 93. Rotating member; 931. Supporting part; 932. Rotating part; 94. Rotating shaft; 95. Second bracket;

[0049] 101. Anti-collision frame; 102. Buffer block; 103. Limit block. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of the present invention, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] like Figures 1 to 11 As shown, this embodiment provides a logistics vehicle, including a vehicle body, the vehicle body includes a front 100 and a chassis platform 200 arranged behind the front 100, the chassis platform 200 is a large plane, and acts as a cargo platform, and a logistics vehicle flipping mechanism 300 is installed on the chassis platform 200. The logistics vehicle flipping mechanism 300 of this embodiment includes a load-bearing frame 1, a motor 2, a deceleration assembly, a guide frame 6, a transmission assembly 7, a connection assembly 8, and a rotation and translation assembly 9, which can realize the flipping and translation of the load-bearing frame 1, avoiding the problem of flipping after translation into place or flipping into place and then translating, which causes the mechanism to be easily stuck and causes damage to the logistics vehicle. The following is a specific description of the structure of each part of the logistics vehicle flipping mechanism 300.

[0055] The load-bearing frame 1 is mounted on the chassis platform 200 and can be flipped between the horizontal conveying position and the vertical loading and unloading position. The horizontal conveying position refers to the position when the load-bearing frame 1 is placed horizontally on the chassis platform 200 and can be transported normally; the vertical loading and unloading position refers to the position where the load-bearing frame 1 is located behind the vehicle body and is in a vertical state, at which time loading and unloading operations can be performed. The load-bearing frame 1 of this embodiment is used to load cargo boxes, specifically, the cargo boxes can be cage trucks, containers, shelves, etc. It should be noted that in this embodiment, the "front" of the load-bearing frame 1 refers to the direction of the front of the logistics vehicle 100 when the load-bearing frame 1 is in a horizontal state, and the "rear" of the load-bearing frame 1 refers to the direction of the rear of the logistics vehicle when the load-bearing frame 1 is in a horizontal state. Optionally, the load-bearing frame 1 is welded by multiple profiles, specifically including a frame body, a front support, a rear support and a bottom reinforcement frame, wherein the front support is fixed to the front of the frame body, the rear support is fixed to the rear of the frame body, and the bottom reinforcement frame is fixed to the bottom outer side of the frame body. The above arrangement effectively increases the overall structural strength of the load-bearing frame 1.

[0056] The motor 2 is the driving part of the entire logistics vehicle flipping mechanism 300, which is fixed to the chassis platform 200 through the motor bracket 21. Preferably, an electromagnetic brake assembly for braking is installed on the motor 2, which can stop the rotation of the motor 2 through friction torque when the power is cut off. The above arrangement can effectively prevent the logistics vehicle flipping mechanism 300 from continuing to move and causing personal injury in the event of an accidental power outage or emergency stop, thereby improving the safety of the mechanism.

[0057] The reduction assembly is transmission-connected to the output end of the motor 2, and is used to reduce the rotation of the motor 2. The reduction assembly can adopt a primary reduction, a secondary reduction or a multi-stage reduction, etc., and the present embodiment preferably adopts a secondary reduction, and is implemented in the form of a sprocket chain. Specifically, the reduction assembly of the present embodiment includes a primary reduction module and a secondary reduction module. The primary reduction module includes a first shaft 31, a third sprocket 32, a fourth sprocket 33 and a second chain 34, the first shaft 31 is rotationally mounted in a first bearing assembly 35, the first bearing assembly 35 is fixed on the chassis platform 200, the third sprocket 32 ​​is mounted on the output shaft of the motor 2, the fourth sprocket 33 is mounted on the first shaft 31, the second chain 34 is transmission-connected to the third sprocket 32 ​​and the fourth sprocket 33, the diameter of the third sprocket 32 ​​is smaller than the diameter of the fourth sprocket 33, so that the rotation speed of the first shaft 31 is smaller than the rotation speed of the output shaft of the motor 2, thereby realizing the primary reduction of the motor 2. The secondary reduction module includes a second shaft 41, a fifth sprocket 42, a sixth sprocket 43 and a third chain 44. The second shaft 41 is rotatably mounted in a second bearing assembly 45, the second bearing assembly 45 is fixed on the chassis platform 200, the fifth sprocket 42 is mounted on the first shaft 31, the sixth sprocket 43 is mounted on the second shaft 41, and the third chain 44 is transmission-connected to the fifth sprocket 42 and the sixth sprocket 43. The diameter of the fifth sprocket 42 is smaller than the diameter of the sixth sprocket 43. Such a configuration makes the rotation speed of the second shaft 41 smaller than the rotation speed of the first shaft 31, thereby realizing the secondary reduction of the motor 2. This embodiment can reduce the running speed of the load-bearing frame 1 during the flipping process by reducing the speed of the motor 2, thereby ensuring the smooth operation of the mechanism; and the use of chain and sprocket transmission can ensure an accurate transmission ratio, large transmission power, high transmission efficiency, and a small force acting on the shaft.

[0058] Further, in order to better adapt to the movement of the bearing frame 1 and shorten the center distance between two adjacent shafts, the deceleration assembly of this embodiment also includes a horizontal transmission module arranged between the secondary deceleration module and the transmission assembly 7. The horizontal transmission module includes a third shaft 51, a seventh sprocket 52, an eighth sprocket 53 and a fourth chain 54. The third shaft 51 is rotatably mounted in a third bearing assembly 55, the third bearing assembly 55 is fixed on the chassis platform 200, the seventh sprocket 52 is mounted on the second shaft 41, the eighth sprocket 53 is mounted on the third shaft 51, the fourth chain 54 is transmission-connected to the seventh sprocket 52 and the eighth sprocket 53, the diameter of the seventh sprocket 52 is equal to the diameter of the eighth sprocket 53, and the third shaft 51 is used to connect with the transmission assembly 7. In this way, the uniform speed transmission of the movement along the horizontal direction is realized, which is conducive to shortening the chain length and improving the structural reliability. In this embodiment, the transmission assembly 7 is provided with two groups, and is respectively located at the two sides of the bearing frame 1, and the two groups of transmission assemblies 7 are respectively connected to the two ends of the third shaft 51. Preferably, in this embodiment, the length of the first shaft 31 is smaller than that of the second shaft 41, and the length of the second shaft 41 is smaller than that of the third shaft 51. This makes it easier to connect the two ends of the third shaft 51 with the corresponding transmission assembly 7 and improves structural stability.

[0059] In the above scheme, the first bearing assembly 35, the second bearing assembly 45 and the third bearing assembly 55 all include a bearing seat and a bearing installed in the bearing seat. Preferably, a deceleration assembly bracket 30 is also fixed on the chassis platform 200 of this embodiment, and the corresponding bearing seats in the first bearing assembly 35, the second bearing assembly 45 and the third bearing assembly 55 are all fixed on the deceleration assembly bracket 30. It should be noted that in other embodiments, the deceleration assembly can also be set as other structures, such as using a reducer for deceleration, which is not limited to this embodiment.

[0060] The guide frame 6 is fixed on the chassis platform 200 and is located on both sides of the load-bearing frame 1. A guide groove 63 extending along the first direction is provided in the guide frame 6 for guiding the movement of the load-bearing frame 1, wherein the first direction is a direction inclined backward and upward relative to the length direction of the chassis platform 200 (i.e., the front-rear direction of the vehicle body). In this embodiment, the angle between the first direction and the length direction of the chassis platform 200 is an acute angle, so that when the load-bearing frame 1 switches from the horizontal conveying position to the vertical loading and unloading position, the load-bearing frame 1 gradually moves toward the upper rear side of the vehicle body and rotates at the same time; when the load-bearing frame 1 switches from the vertical loading and unloading position to the horizontal conveying position, the load-bearing frame 1 gradually moves toward the lower front side of the vehicle body and rotates at the same time. Optionally, the value range of the above angle is 30 degrees to 60 degrees. In this embodiment, two groups of guide frames 6 are provided, and the two groups of guide frames 6 are symmetrically fixed at the two sides of the chassis platform 200, so that the guide grooves 63 on both sides are relatively arranged along the second direction, and the two sides of the load-bearing frame 1 are respectively connected to the two guide frames 6 through corresponding connecting components 8, so as to ensure that the movement of the load-bearing frame 1 is more stable. In this embodiment, the second direction is the width direction of the chassis platform 200 (i.e., the width direction of the vehicle body). Specifically, the guide frame 6 includes a support frame 61 and a guide shell 62, the support frame 61 is fixed on the chassis platform 200, the guide shell 62 is fixed on the support frame 61, the guide shell 62 extends along the first direction, and the guide groove 63 is provided in the guide shell 62. Preferably, the guide shell 62 of this embodiment is made of channel steel, the guide groove 63 is located in the channel steel, and the front and rear ends of the guide groove 63 are both closed, which is used to mechanically limit the movement of the load-bearing frame 1, thereby improving the safety performance of the mechanism. Furthermore, the guide shell 62 is provided with a back plate on the side away from the transmission assembly 7, rather than an open setting that is through on both sides, so that the connection assembly 8 can be limited along the width direction of the vehicle body and the connection assembly 8 can be protected. In this embodiment, the support frame 61 includes a crossbeam located at the bottom and a plurality of columns fixedly connected to the crossbeam, the crossbeam is fixed on the chassis platform 200, and the columns are arranged along the front and rear directions of the vehicle body, and the height increases from front to back, and the guide shell 62 is welded to the top of each column. In this embodiment, the height setting of each column should ensure that the guide shell 6 can be tilted along the first direction, so as to ensure that the guide groove 63 extends along the first direction. Optionally, the support frame 61 is also provided with a reinforcement frame on both sides along the second direction to increase the strength of the support frame 61. Specifically, the reinforcement frame is fixed on the chassis platform 200, so that the guide frame 6 can be effectively prevented from being deformed left and right due to force.

[0061] The transmission assembly 7 is arranged after the deceleration assembly, and its transmission direction is parallel to the guide groove 63. The transmission assembly 7 is connected to the bearing frame 1 through the connecting assembly 8. In this embodiment, two groups of transmission assemblies 7 are located on both sides of the bearing frame 1, and correspond to the positions of the two groups of guide frames 6 respectively, and are close to the corresponding guide groove 63. Specifically, each group of transmission assemblies 7 includes a first sprocket 71, a second sprocket 72 and a first chain 73. The first sprocket 71 is fixed to the end of the third shaft 51, and the second sprocket 72 is rotatably mounted on the first bracket 74 set at the rear end of the guide frame 6. The first chain 73 is transmission-connected to the first sprocket 71 and the second sprocket 72, and the transmission direction of the first chain 73 is parallel to the guide groove 63. Specifically, the first bracket 74 of this embodiment is a U-shaped plate structure, the bottom plate of the U-shaped plate structure is fixed to the rear end of the guide shell 62, and through holes are opened on the two side plates of the U-shaped plate structure. The fourth shaft 75 is rotatably mounted in the through hole, and the second sprocket 72 is fixed on the fourth shaft 75, so that the second sprocket 72 can rotate reliably relative to the first bracket 74. Of course, in other embodiments, the transmission assembly 7 may also be a pulley and belt mechanism, a gear rack mechanism or other transmission structures, as long as it can transmit along the first direction, and is not limited to this embodiment.

[0062] The connecting assembly 8 is fixed on the first chain 73 and can move along the first direction with the first chain 73. One end of the connecting assembly 8 is hinged to the side of the supporting frame 1, and the other end is movably arranged in the guide groove 63. Optionally, in this embodiment, the length of the first chain 73 extending along the first direction is greater than the length of the guide groove 63, so that the connecting assembly 8 can be moved to the two ends of the guide groove 63 to achieve mechanical limit, and the operation reliability is high. In this embodiment, the connecting assembly 8 is also provided with two groups, which are respectively fixed on the two first chains 73 and hinged to the two sides of the supporting frame 1, so as to improve the movement stability of the supporting frame 1. Specifically, each group of connecting assemblies 8 includes a connecting block 81 and a groove wheel 82, the connecting block 81 is fixed to the first chain 73 through a chain joint 83, and the groove wheel 82 is provided with a groove wheel shaft 821, the groove wheel shaft 821 passes through the connecting block 81 and is hinged to the side of the supporting frame 1, and the wheel portion of the groove wheel 82 is movably arranged in the guide groove 63. Since the transmission direction of the first chain 73 is parallel to the guide groove 63 , the first chain 73 of this embodiment can drive the groove wheel 82 to move along the guide groove 63 when it is running.

[0063] The rotation and translation assembly 9 is connected between the tail of the chassis platform 200 and the bottom of the load-bearing frame 1, and is used to adjust the rotation and translation posture of the load-bearing frame 1. Specifically, the rotation and translation assembly 9 includes a slide rail 91, a slider 92 and a rotating member 93. The slide rail 91 is linear, fixed on the bottom reinforcement frame of the load-bearing frame 1 and extends along the front-back direction of the load-bearing frame 1; the slider 92 is slidably connected to the slide rail 91; one end of the rotating member 93 is fixedly connected to the slider 92, and the other end is hinged to the second bracket 95 fixed at the tail of the chassis platform 200 through the rotating shaft 94. When the first chain 73 drives the load-bearing frame 1 to move along the guide groove 63, the load-bearing frame 1 will rotate relative to the rotating shaft 94, and the slide rail 91 slides relative to the slider 92, so that the load-bearing frame 1 can slide forward or backward relative to the rotating member 93. Optionally, the second bracket 95 of this embodiment is a U-shaped bracket, fixed on the chassis platform 200, and the rotating shaft 94 is penetrated on the second bracket 95. Furthermore, the rotating member 93 of this embodiment is L-shaped, including a support portion 931 extending along the front-rear direction of the supporting frame 1 and a rotating portion 932 perpendicular to the support portion 931, the support portion 931 is fixedly connected to the slider 92, and the rotating portion 932 is rotatably connected to the second bracket 95 through a rotating shaft 94. This arrangement makes it easier for the supporting frame 1 to adjust its own posture adaptively when it moves along the guide groove 63. Optionally, the rotation and translation components 9 of this embodiment are also provided with two groups, which are spaced apart along the second direction, so as to better ensure the balance and stability of the movement of the supporting frame 1.

[0064] Furthermore, the logistics vehicle flipping mechanism 300 of the present embodiment also includes an in-place detection component, which includes a first sensor and a second sensor, wherein the first sensor is installed at the front end of the guide shell 62, and a first trigger surface 811 is provided on a side of the connecting block 81 close to the front end of the guide shell 62, and the first trigger surface 811 is used to trigger the first sensor; the second sensor is installed at the rear end of the guide shell 62, and a second trigger surface 812 is provided on a side of the connecting block 81 close to the rear end of the guide shell 62, and the second trigger surface 812 is used to trigger the second sensor. The first sensor and the second sensor are both connected to the controller for communication, and the controller is connected to the motor 2 for communication, so that when the connecting block 81 moves to the set position, the corresponding sensor is triggered, and the sensor sends a signal to the controller, and then the controller controls the motor 2 to stop running, thereby ensuring the accuracy and reliability of the movement of the logistics vehicle flipping mechanism 300. Optionally, in the present embodiment, the first sensor and the second sensor are both travel switches, which have a simple structure and sensitive response.

[0065] Optionally, the logistics vehicle flipping mechanism 300 of the present embodiment further includes an anti-collision frame 101 and a buffer block 102, wherein the anti-collision frame 101 is arranged at the bottom of the load-bearing frame 1, and the buffer block 102 is arranged at the tail of the logistics vehicle body. When the load-bearing frame 1 rotates to the vertical loading and unloading position, the anti-collision frame 101 abuts against the buffer block 102. In this way, the impact force when the load-bearing frame 1 rotates can be prevented from causing damage to the tail of the vehicle body, effectively protecting the vehicle body, and at the same time playing a mechanical limiting role. Further, the logistics vehicle flipping mechanism 300 of the present embodiment further includes a limit block 103, which is provided with two groups, respectively fixed on the chassis platform 200, and located on both sides of the deceleration assembly. When the load-bearing frame 1 moves to the horizontal conveying position, the bottom of the load-bearing frame 1 can abut against the limit block 103, so that the movement of the load-bearing frame 1 can be buffered to prevent the impact from damaging the chassis platform 200, and at the same time can also play a mechanical limiting role on the load-bearing frame 1 to ensure the accuracy of the running position of the load-bearing frame 1. Optionally, the buffer block 102 and the limit block 103 are both made of elastic materials, such as elastic plastic, rubber, etc., to improve their buffering effect on impact force.

[0066] The logistics vehicle flipping mechanism 300 provided in this embodiment has the following working process:

[0067] When the supporting frame 1 needs to switch from the horizontal conveying position to the vertical state position, the motor 2 starts to run, and the motor 2 drives the transmission assembly 7 to move through the deceleration assembly, so that the first chain 73 runs in a direction parallel to the guide groove 63, and the first chain 73 drives the connecting block 81 to move, and the connecting block 81 drives the groove wheel 82 to slide upward and backward along the guide groove 63, and at the same time, the connecting block 81 drives the supporting frame 1 hinged thereon to move upward and backward; at the same time, under the action of the rotating and translating assembly 9, the supporting frame 1 flips upward and backward relative to the vehicle body, thereby realizing the synchronous translation and rotation of the supporting frame 1; when the supporting frame 1 flips to the vertical loading and unloading position, the supporting frame 1 also slides a certain distance to the rear of the supporting frame 1 relative to the slider 92.

[0068] When the supporting frame 1 needs to switch from the vertical loading and unloading position to the horizontal conveying position, the motor 2 starts and runs in reverse. The motor 2 drives the transmission assembly 7 to move through the deceleration assembly, so that the first chain 73 runs in a direction parallel to the guide groove 63. The first chain 73 drives the connecting block 81 to move, and the connecting block 81 drives the groove wheel 82 to slide forward and downward along the guide groove 63. At the same time, the connecting block 81 drives the supporting frame 1 hinged thereon to move forward and downward; at the same time, under the action of the rotating and translating assembly 9, the supporting frame 1 flips forward and downward relative to the vehicle body, thereby realizing the synchronous translation and rotation of the supporting frame 1; when the supporting frame 1 flips to the horizontal conveying position, the supporting frame 1 also slides a certain distance toward the front of the supporting frame 1 relative to the slider 92.

[0069] The present embodiment has a simple structure and is safe and reliable. The logistics vehicle flipping mechanism 300 can perform flipping motion and translation motion simultaneously. There is no dead point of the mechanism, thus avoiding the mechanism from getting stuck. The mechanism works smoothly and is not prone to jamming, thus avoiding damage to the logistics vehicle.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The flipping mechanism of the logistics vehicle is characterized by: include: The load-bearing frame (1) is configured to be mounted on a logistics vehicle chassis platform (200) and can be flipped between a horizontal conveying position and a vertical loading and unloading position; A motor (2) configured to be fixed on the chassis platform (200); A reduction assembly, drivingly connected to the output end of the motor (2); A guide frame (6) is configured to be fixed on the chassis platform (200) and located on both sides of the supporting frame (1), wherein a guide groove (63) extending along a first direction is arranged in the guide frame (6), and the guide grooves (63) on both sides are arranged opposite to each other along a second direction, wherein the first direction is inclined backward and upward relative to the length direction of the chassis platform (200), and the second direction is the width direction of the chassis platform (200); A transmission assembly (7) which is transmission-connected to the output end of the deceleration assembly and is located on both sides of the carrying frame (1), and the transmission direction of the transmission assembly (7) is parallel to the guide groove (63); a connecting assembly (8) connected to the transmission assembly (7) and capable of moving along the first direction with the transmission assembly (7), one end of the connecting assembly (8) being hinged to the side of the supporting frame (1), and the other end being movably disposed in the guide groove (63); The rotational translation assembly (9) comprises a slide rail (91), a slider (92) and a rotating member (93); the slide rail (91) is fixed to the bottom of the supporting frame (1) and extends along the front-rear direction of the supporting frame (1); the slider (92) is slidably connected to the slide rail (91); one end of the rotating member (93) is fixedly connected to the slider (92), and the other end is hinged to the rear end of the chassis platform (200).

2. The logistics vehicle flipping mechanism according to claim 1 is characterized in that: A first bracket (74) is fixed to the rear end of the guide frame (6); the transmission assembly (7) comprises a first sprocket (71), a second sprocket (72) and a first chain (73); the first sprocket (71) is transmission-connected to the output end of the reduction assembly; the second sprocket (72) is rotatably mounted on the first bracket (74); the first chain (73) is transmission-connected to the first sprocket (71) and the second sprocket (72); the transmission direction of the first chain (73) is parallel to the guide groove (63); and the connecting assembly (8) is fixedly connected to the first chain (73).

3. The logistics vehicle flipping mechanism according to claim 2 is characterized in that: A third shaft (51) is provided at the output end of the reduction assembly, and the first sprockets (71) on both sides are respectively mounted on both ends of the third shaft (51).

4. The logistics vehicle flipping mechanism according to claim 1, characterized in that: A second bracket (95) is fixed to the rear of the chassis platform (200), and the other end of the rotating member (93) is hinged to the second bracket (95) via a rotating shaft (94).

5. The logistics vehicle flipping mechanism according to claim 1, characterized in that: The rotation and translation components (9) are provided in two groups, and the two groups of the rotation and translation components (9) are arranged at intervals along the second direction at the bottom of the supporting frame (1).

6. The logistics vehicle flipping mechanism according to claim 2, characterized in that: The guide frame (6) comprises a support frame (61) and a guide shell (62), wherein the support frame (61) is configured to be fixed on the chassis platform (200), and the guide shell (62) is fixed on the support frame (61), and the guide shell (62) extends along the first direction, and the guide groove (63) is provided in the guide shell (62), and the front and rear ends of the guide groove (63) are closed and arranged to limit the movement of the connecting assembly (8); the first bracket (74) is fixed to the rear end of the guide shell (62), and a fourth shaft (75) is rotatably mounted on the first bracket (74), and the second sprocket (72) is mounted on the fourth shaft (75).

7. The logistics vehicle flipping mechanism according to claim 6, characterized in that: The connecting assembly (8) comprises a connecting block (81) and a groove wheel (82); the connecting block (81) is fixed to the first chain (73) via a chain joint (83); a groove wheel shaft (821) is provided on the groove wheel (82); the groove wheel shaft (821) passes through the connecting block (81) and is hinged to the side of the supporting frame (1); the wheel portion of the groove wheel (82) is movably arranged in the guide groove (63).

8. The logistics vehicle flipping mechanism according to claim 7, characterized in that: The invention also comprises an in-position detection component, wherein the in-position detection component comprises a first sensor and a second sensor, wherein the first sensor is mounted at the front end of the guide shell (62), and a first trigger surface (811) is provided on a side of the connection block (81) close to the front end of the guide shell (62), and the first trigger surface (811) is used to trigger the first sensor; and the second sensor is mounted at the rear end of the guide shell (62), and a second trigger surface (812) is provided on a side of the connection block (81) close to the rear end of the guide shell (62), and the second trigger surface (812) is used to trigger the second sensor.

9. The logistics vehicle flipping mechanism according to claim 6, characterized in that: The length of the first chain (73) extending along the first direction is greater than the length of the guide groove (63); and / or, The first bracket (74) is a U-shaped plate structure, and through holes are provided on two side plates of the U-shaped plate structure, and the fourth shaft (75) is rotatably installed in the through holes.

10. A logistics vehicle, comprising a vehicle body, wherein the vehicle body comprises a vehicle head (100) and a chassis platform (200), wherein the chassis platform (200) is arranged behind the vehicle head (100), and wherein: It also includes a logistics vehicle flipping mechanism as described in any one of claims 1 to 9, and the logistics vehicle flipping mechanism is installed on the chassis platform (200).

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