A loading and unloading device, a vehicle and a vehicle loading and unloading method

Abstract

The present invention provides a loading and unloading device, a vehicle and a vehicle loading and unloading method, wherein the loading and unloading device comprises two bases relatively arranged on the bottom plate of a vehicle body, both bases are equipped with a lifting part, one end of the lifting part is connected to a grabbing and moving mechanism, and the lifting part can drive the grabbing and moving mechanism to extend out of the rear of the vehicle body or retract the vehicle body; the two grabbing and moving mechanisms can cooperate to grab a cargo box, and the grabbing and moving mechanism can drive the cargo box to move in a vertical plane in the length direction of the vehicle, and the lifting part cooperates with the grabbing and moving mechanism to load or unload the cargo box into or out of the vehicle body. With the above structure, the loading and unloading device is arranged as a whole on the bottom plate inside the vehicle body, which will not damage the original structure of the van truck, and can be applied to small van trucks, and the loading and unloading operations are completely performed by the loading and unloading device.

Description

Technical Field

[0001] The present invention relates to the technical field of freight vehicles, and in particular to a vehicle loading and unloading device, a vehicle and a vehicle loading and unloading method. Background Art

[0002] Vans are a common means of transportation in land transportation. Compared with large trucks, they have the advantages of mobility, ease of operation, safety and reliability.

[0003] Existing vans usually use hydraulic tailgates for loading and unloading operations. The hydraulic tailgate is usually installed on the chassis beam of the van. It requires a certain installation height and is not suitable for small vans with lower chassis. Moreover, the hydraulic bottom plate needs to cut part of the structure at the rear of the van before it can be installed normally.

[0004] Therefore, how to provide a loading and unloading device that does not damage the original structure of the van and can be suitable for small vans is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a loading and unloading device which does not damage the original structure of the van and can be applied to small vans.

[0006] In order to solve the above technical problems, the present invention provides a loading and unloading device, including two bases relatively arranged on the bottom plate of a vehicle body, both bases are equipped with a lifting part, one end of the lifting part is connected to a grabbing and moving mechanism, and the lifting part can drive the grabbing and moving mechanism to extend out to the rear of the vehicle body or retract the vehicle body; the two grabbing and moving mechanisms can cooperate to grab the cargo box, and the grabbing and moving mechanism can drive the cargo box to move in a vertical plane in the length direction of the vehicle, and the lifting part cooperates with the grabbing and moving mechanism to load or unload the cargo box into or out of the interior of the vehicle body.

[0007] With the above structure, the loading and unloading device is entirely arranged on the bottom plate inside the vehicle body, which will not damage the original structure of the van and can be applied to small vans, and the loading and unloading operations are completely performed by the loading and unloading device.

[0008] Optionally, the lifting part includes a first driving part and a connecting rod mechanism, two ends of the connecting rod mechanism are respectively connected to the base and the grabbing and moving mechanism, and the first driving part can drive the connecting rod mechanism to drive the grabbing and moving mechanism to extend out or retract the vehicle body.

[0009] Optionally, the first driving part is a cylinder, the connecting rod mechanism is two connecting rods arranged in parallel, both ends of the two connecting rods are rotatably connected to the grabbing moving mechanism and the base through pins, the connecting line of the setting positions of the four pins is a parallelogram, and the cylinder is connected between the pins at any two diagonal positions.

[0010] Optionally, the grabbing and moving mechanism includes a vertical moving part, a horizontal moving part and a grabbing part, and the grabbing parts of the two grabbing and moving mechanisms can cooperate to grab the cargo box; the grabbing part moves in the vertical direction and the length direction of the vehicle under the drive of the vertical moving part and the horizontal moving part.

[0011] Optionally, the vertical moving part includes a second driving part, a vertical guide groove and a vertical moving member, the second driving part is arranged inside the vertical guide groove and can drive the vertical moving member to move along the vertical guide groove, and the vertical moving member is fixed to the horizontal moving part or the grabbing part.

[0012] Optionally, the horizontal moving part includes a third driving part, a horizontal guide groove and a horizontal moving member, the third driving part is arranged inside the horizontal guide groove, and can drive the horizontal moving member to move along the horizontal guide groove, and the horizontal moving member is fixed to the vertical moving part or the grasping part.

[0013] Optionally, the grabbing and moving mechanism also includes a mounting plate, the lifting part is connected to the mounting plate, the vertical moving part is fixed to the inner side of the mounting plate, the horizontal moving part is fixed to the inner side of the vertical moving part, and the grabbing part is fixed to the horizontal moving part; or, the horizontal moving part is fixed to the mounting plate, the vertical moving part is fixed to the inner side of the horizontal moving part, and the grabbing part is fixed to the vertical moving part.

[0014] Optionally, a limiting bracket is further included, which is installed on one of the vertical moving part and the horizontal moving part where the grabbing part is not installed, and the inner end of the limiting bracket is parallel to the inner end of the grabbing part to abut against the cargo box.

[0015] The present invention also provides a vehicle having a loading and unloading device disposed in the vehicle body, wherein the loading and unloading device is the loading and unloading device described above, and the vehicle can perform loading and unloading operations through the loading and unloading device.

[0016] The present invention also provides a vehicle loading and unloading method, based on the vehicle described above, the specific steps are as follows: loading: both lifting parts drive the grabbing mobile mechanism to extend out of the vehicle body, and the two grabbing mobile mechanisms cooperate to grab the cargo box. After the lifting part drives the grabbing mobile mechanism and the cargo box to be lifted above the bottom plate, the grabbing mobile mechanism then drives the cargo box to move into the vehicle body, and lowers the cargo box to the bottom plate, and the loading is completed; unloading: the two grabbing mobile mechanisms cooperate to grab the cargo box from the bottom plate. After the grabbing mobile mechanism drives the cargo box to be lifted off the bottom plate, the lifting part drives the grabbing mobile mechanism to extend out of the vehicle body and moves the cargo box out of the vehicle body. The moving part lowers the cargo box to the ground, and the unloading is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a cargo loading and unloading device provided by an embodiment of the present invention when it is in an extended state;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure when the mid-loading and unloading device is in the retracted state;

[0019] Figure 3 yes Figure 1 An enlarged structural diagram of the mid-loading and unloading device;

[0020] Figure 4 is a schematic structural diagram of a cargo box provided by an embodiment of the present invention;

[0021] Figure 5 yes Figure 1 A schematic diagram of the structure of the mid-loading and unloading device when it extends out of the vehicle body to grab the cargo box;

[0022] Figure 6 yes Figure 1 A schematic diagram of the structure when the mid-loading and unloading device extends out of the vehicle body, grabs the cargo box and then lifts it above the bottom plate;

[0023] Figure 7 yes Figure 1 A schematic diagram of the structure when the mid-loading and unloading device grabs the cargo box and lifts it to the inside of the vehicle body;

[0024] Figure 8 yes Figure 1 Schematic diagram of the structure when the mid-loading and unloading device places the cargo box on the bottom plate;

[0025] Fig. 9 yes Figure 3 Schematic diagram of the local structure of the middle lifting part;

[0026] Fig.10 yes Figure 3 An enlarged structural diagram of the middle lifting part;

[0027] Fig.11 yes Figure 1 A schematic diagram of the enlarged structure of one side when the mid-loading and unloading device is in the extended state;

[0028] Fig.12 yes Figure 2 Enlarged structural diagram of the mid-loading and unloading device.

[0029] Figure 1-12 The reference numerals in the figures are described as follows:

[0030] 1 base, 2 lifting part, 21 first driving part, 22 connecting rod mechanism, 221 connecting rod, 222 pin shaft,

[0031] 3 mounting plate, 4 vertical moving part, 41 second driving part, 42 vertical guide groove, 43 vertical moving member,

[0032] 44 limiting bracket, 5 horizontal moving part, 51 third driving part, 52 horizontal guide groove, 53 horizontal moving part, 54 grabbing part, 6 bottom plate, 7 cargo box, 71 hanging ear, 72 walking wheel. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Please refer to Figure 1-12 , Figure 1 is a schematic structural diagram of a cargo loading and unloading device provided by an embodiment of the present invention when it is in an extended state; Figure 2 yes Figure 1 Schematic diagram of the structure when the mid-loading and unloading device is in the retracted state;

[0035] Figure 3 yes Figure 1 An enlarged structural diagram of the mid-loading and unloading device; Figure 4 is a schematic structural diagram of a cargo box provided by an embodiment of the present invention; Figure 5 yes Figure 1 A schematic diagram of the structure of the mid-loading and unloading device when it extends out of the vehicle body to grab the cargo box; Figure 6 yes Figure 1 A schematic diagram of the structure when the mid-loading and unloading device extends out of the vehicle body, grabs the cargo box and then lifts it above the bottom plate; Figure 7 yes Figure 1 A schematic diagram of the structure when the mid-loading and unloading device grabs the cargo box and lifts it to the inside of the vehicle body; Figure 8 yes Figure 1 Schematic diagram of the structure when the mid-loading and unloading device places the cargo box on the bottom plate; Fig. 9 yes Figure 3 Schematic diagram of the local structure of the middle lifting part; Fig.10 yes Figure 3An enlarged structural diagram of the middle lifting part; Fig.11 yes Figure 1 A schematic diagram of the enlarged structure of one side when the mid-loading and unloading device is in the extended state; Fig.12 yes Figure 2 Enlarged structural diagram of the mid-loading and unloading device.

[0036] An embodiment of the present invention provides a loading and unloading device, including two bases 1 relatively arranged on a bottom plate 6 of a vehicle body, both bases 1 are equipped with a lifting part 2, one end of the lifting part 2 is connected to a grabbing and moving mechanism, and the lifting part 2 can drive the grabbing and moving mechanism to extend to the rear of the vehicle body or retract the vehicle body; the two grabbing and moving mechanisms can cooperate to grab a cargo box 7, and the grabbing and moving mechanisms can drive the cargo box 7 to move in a vertical plane in the length direction of the vehicle, and the lifting part 2 cooperates with the grabbing and moving mechanism to load or unload the cargo box 7 into or out of the vehicle body.

[0037] With the above structure, the loading and unloading device is arranged on the bottom plate 6 inside the vehicle body through the base 1, which will not damage the original structure of the van. The loading and unloading device can be retracted into the interior of the vehicle body as a whole and can be suitable for small vans. The vehicle can perform loading and unloading operations through the loading and unloading device, and loading and unloading is more convenient.

[0038] Specific as Figure 1-3 As shown, the two bases 1 are respectively installed on both sides of the bottom plate 6 in the vehicle body, and the two sides refer to the two sides along the width direction of the vehicle. The lifting part 2 and the grabbing moving mechanism correspondingly installed on the base 1 are both in the same vertical plane in the length direction of the vehicle. The lifting part 2 can drive the grabbing moving mechanism connected thereto to extend out to the rear of the vehicle body or retract into the vehicle body, that is, the whole is in Figure 1 The state of the probe or Figure 2 The reclaim status.

[0039] It should be noted that the setting position of the base 1 should be relatively close to the outside of the vehicle body, so that the lifting part 2 can drive the grabbing mobile mechanism to extend out of the vehicle body, and does not conflict with the top of the vehicle body when it is retracted into the vehicle body; correspondingly, the length of the lifting part 2 should also be moderate. If it is too short, the grabbing mobile mechanism cannot be extended out of the vehicle body, and if it is too long, it cannot be retracted into the vehicle body; in addition, there should be a sufficient distance between the two bases 1 so that there is enough space between the two grabbing mobile mechanisms to place and grab the cargo box 7. The specific setting position of the base 1 and the specific length of the lifting part 2 can be set according to the size and structure of the vehicle body in actual application, and the present invention does not limit this, as long as the two can achieve the above functions.

[0040] The two grabbing moving mechanisms respectively fixed to the two lifting parts 2 should be arranged opposite to each other toward the center position, that is, when the cargo box 7 is placed between the two, the two can cooperate to grab and fix the cargo box 7, drive the cargo box 7 to move, and cooperate with the lifting part 2 to complete the loading or unloading operation. It can be understood that the two grabbing moving mechanisms grab the cargo box 7 in what way, and the present invention does not limit this, as long as the two can cooperate to grab and fix the cargo box 7. For example, both grabbing moving mechanisms can be provided with hooks, and the cargo box 7 is provided with corresponding snap rings that can be grabbed by the hooks. The two grabbing moving mechanisms can be hung on the snap rings through the hooks to grab and fix the cargo box 7.

[0041] In this embodiment, the lifting part 2 includes a first driving part 21 and a connecting rod mechanism 22. The two ends of the connecting rod mechanism 22 are respectively connected to the base 1 and the grabbing moving mechanism. The first driving part 21 can drive the connecting rod mechanism 22 to drive the grabbing moving mechanism to extend or retract the vehicle body.

[0042] Please refer to Figure 3 The first driving part 21 can drive the connecting rod mechanism 22, so that the grabbing moving mechanism can move along an arc around the base 1 to extend out of or retract into the vehicle body. When the connecting rod mechanism 22 tends to be set horizontally, the grabbing moving mechanism can extend out of the vehicle body as a whole; when the connecting rod mechanism 22 tends to be set vertically, the grabbing moving mechanism can be retracted into the vehicle body as a whole.

[0043] Specifically, the grabbing and moving mechanism includes a mounting plate 3, a lifting part 2 connected to the mounting plate 3, a first driving part 21 being an oil cylinder, and a connecting rod mechanism 22 being two parallel connecting rods 221, both ends of the two connecting rods 221 being rotatably connected to the mounting plate 3 and the base 1 through pins 222, a line connecting the setting positions of the four pins 222 forming a parallelogram, and the oil cylinder being connected between the pins 222 at any two diagonal positions.

[0044] Please refer to Figure 9-12 The base 1 is provided with two pin holes, and the mounting plate 3 is provided with two corresponding pin holes. The two connecting rods 221 are respectively connected between the base 1 and the mounting plate 3 through the pins 222. The two connecting rods 221 and the base 1 and the mounting plate 3 form a parallelogram structure, that is, the two pin holes provided on the base 1 and the two pin holes provided on the mounting plate 3 are parallel to each other, and the fixed end and the piston end of the cylinder are respectively connected to the pins 222 at any two diagonal positions.

[0045] When the piston end of the cylinder is retracted, Fig.11As shown, the two connecting rods 221 are in a horizontal position, and the mounting plate 3 connected thereto can be extended out of the vehicle body; when the piston end of the oil cylinder changes from a retracted state to an extended state, the two connecting rods 221 can be driven to rotate around the pin shafts 222 connected thereto, respectively, and rotate from a horizontal position to a vertical position. Since the corresponding connection positions of the connecting rod mechanism 22 and the base 1 and the mounting plate 3 are parallelogram structures, the angle of the mounting plate 3 will not change, and it will only be lifted to the top of the bottom plate 6 with the movement of the two connecting rods 221, and the vehicle body will be retracted at the same time; when the piston end of the oil cylinder is fully extended, as shown in FIG. Fig.12 As shown, the two connecting rods 221 are in a vertical position, and the mounting plate 3 connected thereto is lifted above the bottom plate 6 and retracted into the vehicle body. If the mounting plate 3 needs to be extended out of the vehicle body again, it is only necessary to control the piston end of the oil cylinder from an extended state to a retracted state.

[0046] It can be understood that the first driving part 21 can also be other driving structures other than the oil cylinder, and the present invention does not limit this, as long as it can have the above functions to complete the loading and unloading operations. For example, the first driving part 21 can also be an electric push rod driven by a motor, which can realize the extension or retraction of the mounting plate 3 through electric control to complete the loading and unloading operations. The connecting rod mechanism 22 can also be other structures, and the present invention does not limit this either, as long as it can achieve the above functions.

[0047] In this embodiment, the grabbing moving mechanism includes a vertical moving part 4, a horizontal moving part 5 and a grabbing part 54. The grabbing parts 54 of the two grabbing moving mechanisms can cooperate to grab the cargo box 7; the grabbing part 54 moves along the vertical direction and the length direction of the vehicle under the drive of the vertical moving part 4 and the horizontal moving part 5.

[0048] like Figure 3 As shown, in this embodiment, the vertical moving part 4 is fixed on the inner side of the mounting plate 3, and the inner side refers to the side close to the center axis of the vehicle in the horizontal plane, and the outer side refers to the side away from the center axis of the vehicle. The same applies to the following text. The horizontal moving part 5 is fixed on the inner side of the vertical moving part 4, and the inner side of the horizontal moving part 5 is provided with a gripping part 54. In actual application, the opposite setting can also be adopted, that is, the horizontal moving part 5 is fixed on the inner side of the mounting plate 3, and the vertical moving part 4 is fixed on the inner side of the horizontal moving part 5, and the inner side of the vertical moving part 4 is provided with a gripping part 54. The present invention does not limit this.

[0049] In this embodiment, the horizontal moving part 5 can move in the vertical direction through the vertical moving part 4, and the grabbing part 54 will also move in the vertical direction accordingly. The grabbing part 54 can also move in the horizontal direction through the horizontal moving part 5. Through the cooperation between the vertical moving part 4 and the horizontal moving part 5, the grabbing part 54 can move freely within the moving range of the two to grab and drive the cargo box 7 to move.

[0050] Specifically, the vertical moving part 4 includes a second driving part 41, a vertical guide groove 42 and a vertical moving member 43. The second driving part 41 is arranged inside the vertical guide groove 42 and can drive the vertical moving member 43 to move along the vertical guide groove 42. The vertical moving member 43 is fixed to the horizontal moving part 5 or the grabbing part 54.

[0051] Please continue to refer to Figure 3 In this embodiment, the second driving part 41 is a cylinder, which is integrally arranged inside the vertical guide groove 42, with its piston end fixed to the vertical moving member 43, and the fixed end fixed to the upper end of the vertical guide groove 42. The vertical moving member 43 can move in the vertical direction along the vertical guide groove 42 by the extension and contraction of the piston end of the cylinder. Of course, in actual applications, the fixed positions of the fixed end and the piston end can be set oppositely, wherein the one fixed to the upper end of the vertical guide groove 42 can also be fixed to the lower end of the vertical guide groove 42.

[0052] The side wall of the vertical guide groove 42 is also provided with a guide hole, and the vertical moving member 43 is provided with a corresponding guide pin, which can be inserted into the guide hole to limit the vertical moving member 43 in the vehicle width direction to prevent it from escaping from the vertical guide groove 42.

[0053] In this embodiment, the horizontal moving part 5 includes a third driving part 51, a horizontal guide groove 52 and a horizontal moving member 53. The third driving part 51 is arranged inside the horizontal guide groove 52 and can drive the horizontal moving member 53 to move along the horizontal guide groove 52. The horizontal moving member 53 is fixed to the vertical moving part 4 or the grabbing part 54.

[0054] In this embodiment, the third driving part 51 is a cylinder, which is integrally arranged inside the horizontal guide groove 52, and its piston end is fixed to the horizontal moving member 53, and the fixed end is fixed to the rear end of the horizontal guide groove 52, the rear end refers to the rear end in the length direction of the vehicle, and the front end refers to the front end in the length direction of the vehicle, and the same applies to the following text. The horizontal moving member 53 can move in the horizontal direction along the horizontal guide groove 52 by the extension and contraction of the piston end of the cylinder. Of course, in actual applications, the fixed positions of the fixed end and the piston end can be set oppositely, and the one fixed to the rear end of the horizontal guide groove 52 can also be fixed to the front end of the horizontal guide groove 52.

[0055] A limiting plate is extended relatively along the outer edge of the side wall of the horizontal guide groove 52 in the vertical direction, that is, the limiting plate is extended upward along the lower edge of the side wall, or the limiting plate is extended downward along the upper edge of the side wall, or both of them extend limiting plates in relative directions. The limiting plate can limit the horizontal moving member 53 in the vehicle width direction to prevent the horizontal moving member 53 from escaping from the horizontal guide groove 52.

[0056] In this embodiment, the grabbing portion 54 is fixed to the inner side of the horizontal moving member 53. When the piston end of the third driving member 51 is in an extended state, the horizontal moving member 53 and the grabbing portion 54 fixed thereto are located near the front end of the horizontal guide groove 52; in the process of the piston end of the third driving member 51 contracting from the extended state to the retracted state, the horizontal moving member 53 will move along the horizontal guide groove 52 to a position near the rear end of the horizontal guide groove 52, and the grabbing portion 54 will move accordingly; when the piston end of the third driving member 51 is in a retracted state, the horizontal moving member 53 and the grabbing portion 54 fixed thereto are located near the rear end of the horizontal guide groove 52, and after the grabbing portion 54 grabs the cargo box 7, the cargo box 7 can be moved in the horizontal direction in the above manner.

[0057] The horizontal guide groove 52 is fixed to the inner side of the vertical moving member 43. When the piston end of the second driving part 41 is in the extended state, the vertical moving member 43 and the horizontal guide groove 52 fixed thereto are located near the lower end of the vertical guide groove 42; in the process of the piston end of the second driving part 41 contracting from the extended state to the retracted state, the vertical moving member 43 will move along the vertical guide groove 42 to a position near the upper end of the vertical guide groove 42, and the horizontal guide groove 52 will move accordingly; when the piston end of the second driving part 41 is in the retracted state, the vertical moving member 43 and the grabbing part 54 fixed thereto are located near the upper end of the vertical guide groove 42, and the grabbing part 54 moves with the horizontal guide groove 52. After the grabbing part 54 grabs the cargo box 7, the cargo box 7 can be moved in the vertical direction in the above manner.

[0058] In summary, the grabbing part 54 can move within the range of the vertical moving part 4 and the horizontal moving part 5, and cooperate with the lifting part 2 to extend or retract the mounting plate 3 into the vehicle body, and the grabbing part 54 can drive the cargo box 7 to perform loading and unloading operations.

[0059] It can be understood that the second drive unit 41 and the third drive unit 51 can also adopt other drive structures, and the present invention does not limit this, as long as the two can achieve the above functions. Like the first drive unit 21, the two can also adopt electric push rods driven by motors to realize electronically controlled loading and unloading.

[0060] The present invention also does not limit the connection relationship between the mounting plate 3, the vertical moving part 4, the horizontal moving part 5 and the grabbing part 54, as well as the fixed positions at both ends of the second drive part 41 and the third drive part 51, as long as the two grabbing parts 54 can cooperate to grab the cargo box 7 and move it through the vertical moving part 4 and the horizontal moving part 5. However, it should be noted that after adjusting the connection relationship between the components or the fixed positions at both ends of the second drive part 41 and the third drive part 51 in actual applications, the specific control method and control logic may be different from those in this embodiment, and corresponding adjustments need to be made to ensure the normal loading and unloading operations.

[0061] Please refer to Figure 4 and Fig.12 In this embodiment, the grabbing portion 54 is a hook, and hook ears 71 are provided at corresponding positions on the two sides of the cargo box 7. The loading and unloading device can grab and fix the cargo box 7 through the hook and the hook ears 71. A plurality of running wheels 72 are also provided at the bottom of the cargo box 7 to facilitate the staff to move the cargo box 7.

[0062] This embodiment further includes a limiting bracket 44 installed on one of the vertical moving part 4 and the horizontal moving part 5 where the grabbing part 54 is not installed. The inner end of the limiting bracket 44 is parallel to the inner end of the grabbing part 54 to abut against the cargo box 7.

[0063] Specific as Fig.12 As shown, the limiting bracket 44 can cooperate with the grabbing portion 54, and when the grabbing portion 54 grabs the cargo box 7, the cargo box 7 is further fixed to prevent the cargo box 7 from swinging, causing the cargo box 7 to accidentally detach from the grabbing portion 54. The structure of the limiting bracket 44 is not limited in the present invention, as long as it can prevent the cargo box 7 from swinging.

[0064] The present invention also provides a vehicle, which is provided with a loading and unloading device in its body, and the vehicle can perform loading and unloading operations through the loading and unloading device. The loading and unloading device is the loading and unloading device described above. Since the loading and unloading device already has the above technical effects, the vehicle including the loading and unloading device should also have the same technical effects, so it will not be repeated here.

[0065] The present invention also provides a vehicle loading and unloading method, based on the vehicle described above, the specific steps are as follows:

[0066] Loading: Both lifting parts 2 drive the mounting plate 3 and the moving part to extend out of the vehicle body, the vertical moving part 4 drives the horizontal moving part 5 to move vertically to the lower end of the vertical guide groove 42, and the horizontal moving part 5 drives the grabbing part 54 to move horizontally to the front end of the horizontal guide groove 52. The staff moves the cargo box 7 between the two grabbing parts 54, that is, Figure 5 Status shown;

[0067] The vertical moving part 4 drives the horizontal moving part 5 to be lifted vertically, and the grabbing part 54 can be lifted upward accordingly, and cooperate with the hanging ears 71 arranged on the two side walls of the cargo box 7 to grab and fix the cargo box 7 so that it is lifted together to leave the ground, and the lifting part 2 drives the mounting plate 3 to be retracted into the vehicle until the bottom surface of the cargo box 7 is lifted above the bottom plate 6 of the vehicle body and at least partially enters the vehicle body, that is, Figure 6 Status shown;

[0068] The horizontal moving part 5 drives the grabbing part 54 to move toward the rear end along the horizontal guide groove 52, so that the cargo box 7 moves horizontally into the vehicle body. After the cargo box 7 moves into the vehicle body as a whole, Figure 7The horizontal moving part 5 is then lowered vertically by the vertical moving part 4 until the running wheels 72 of the cargo box 7 contact the bottom plate 6 and the grabbing part 54 is separated from the hanging ear 71, that is, Figure 8 In the state shown, the staff can move the cargo box 7 to the interior of the vehicle body and the loading is completed.

[0069] The unloading operation is the opposite of the loading operation described above and will not be described in detail here.

[0070] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cargo loading and unloading device, characterized in that: The invention comprises two bases (1) arranged opposite to each other on a bottom plate (6) inside a vehicle body, each of the two bases (1) being provided with a lifting part (2), one end of the lifting part (2) being connected to a grabbing and moving mechanism, and the lifting part (2) being able to drive the grabbing and moving mechanism to extend out to the rear of the vehicle body or to retract the vehicle body; The two grabbing and moving mechanisms can cooperate with each other to grab the cargo box (7), and the grabbing and moving mechanisms can drive the cargo box (7) to move in a vertical plane in the length direction of the vehicle, and the lifting part (2) cooperates with the grabbing and moving mechanisms to load the cargo box (7) into or unload it from the interior of the vehicle body; The grabbing and moving mechanism comprises a vertical moving part (4), a horizontal moving part (5) and a grabbing part (54), and the grabbing parts (54) of the two grabbing and moving mechanisms can cooperate to grab the cargo box (7); the grabbing part (54) moves in the vertical direction and the length direction of the vehicle under the drive of the vertical moving part (4) and the horizontal moving part (5); The vertical moving part (4) comprises a second driving part (41), a vertical guide groove (42) and a vertical moving member (43); the second driving part (41) is arranged inside the vertical guide groove (42) and is capable of driving the vertical moving member (43) to move along the vertical guide groove (42); the vertical moving member (43) is fixed to the horizontal moving part (5) or the grasping part (54); The horizontal moving part (5) comprises a third driving part (51), a horizontal guide groove (52) and a horizontal moving member (53); the third driving part (51) is arranged inside the horizontal guide groove (52) and is capable of driving the horizontal moving member (53) to move along the horizontal guide groove (52); the horizontal moving member (53) is fixed to the vertical moving part (4) or the grasping part (54).

2. The cargo loading and unloading device according to claim 1, characterized in that: The lifting part (2) comprises a first driving part (21) and a connecting rod mechanism (22), wherein two ends of the connecting rod mechanism (22) are respectively connected to the base (1) and the grabbing and moving mechanism, and the first driving part (21) can drive the connecting rod mechanism (22) to drive the grabbing and moving mechanism to extend out of or retract the vehicle body.

3. The cargo loading and unloading device according to claim 2, characterized in that: The first driving part (21) is an oil cylinder, the connecting rod mechanism (22) is two connecting rods (221) arranged in parallel, both ends of the two connecting rods (221) are rotatably connected to the grabbing moving mechanism and the base (1) through pins (222), the connection line of the arrangement positions of the four pins (222) forms a parallelogram, and the oil cylinder is connected between the pins (222) at any two diagonal positions.

4. The cargo loading and unloading device according to claim 1, characterized in that: The grabbing and moving mechanism further comprises a mounting plate (3), the lifting portion (2) is connected to the mounting plate (3), the vertical moving portion (4) is fixed to the inner side of the mounting plate (3), the horizontal moving portion (5) is fixed to the inner side of the vertical moving portion (4), and the grabbing portion (54) is fixed to the horizontal moving portion (5); Alternatively, the horizontal moving part (5) is fixed to the mounting plate (3), the vertical moving part (4) is fixed to the inner side of the horizontal moving part (5), and the grabbing part (54) is fixed to the vertical moving part (4).

5. The cargo loading and unloading device according to claim 1, characterized in that: It also includes a limiting bracket (44) installed on one of the vertical moving part (4) and the horizontal moving part (5) where the grabbing part (54) is not installed, and the inner side end of the limiting bracket (44) is parallel to the inner side end of the grabbing part (54) so ​​as to abut against the cargo box (7).

6. A vehicle, characterized in that: A loading and unloading device is provided in the vehicle body, and the loading and unloading device is the loading and unloading device according to any one of claims 1 to 5, and the vehicle can perform loading and unloading operations through the loading and unloading device.

7. A method for loading and unloading goods on a vehicle, characterized in that: Based on the vehicle described in claim 6, the specific steps are as follows: Loading: Both lifting parts (2) drive the grabbing moving mechanism to extend out of the vehicle body, and the two grabbing moving mechanisms cooperate to grab the cargo box (7). After the lifting parts (2) drive the grabbing moving mechanism and the cargo box (7) to be lifted above the bottom plate (6), the grabbing moving mechanism then drives the cargo box (7) to move into the vehicle body, and lowers the cargo box (7) to the bottom plate (6), and loading is completed; Unloading: The two grabbing and moving mechanisms cooperate with each other to grab the cargo box (7) from the bottom plate (6). After the grabbing and moving mechanisms drive the cargo box (7) to lift up and leave the bottom plate (6), the lifting part (2) drives the grabbing and moving mechanisms to extend out of the vehicle body and move the cargo box (7) out of the vehicle body. The moving part lowers the cargo box (7) to the ground, and unloading is completed.

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