A telescopic device for logistics transportation

Abstract

The application discloses a telescopic device for logistics transportation, which comprises a fixed section, a telescopic section, a guard plate assembly, wherein the telescopic section comprises a main telescopic joint and at least one secondary telescopic joint which are connected in sequence along a first direction, and the main telescopic joint is nested in the fixed section at one end away from the secondary telescopic joint; the guard plate assembly comprises a fixed guard plate, a first floating guard plate and a second floating guard plate, the fixed guard plate is arranged on both sides of the top of the fixed section, the first floating guard plate is arranged on both sides of the top of the main telescopic joint and is placed outside the fixed guard plate, and the second floating guard plate is arranged on both sides of the top of the secondary telescopic joint and is placed outside the first floating guard plate; the first floating guard plate and the second floating guard plate can be synchronously extended with the telescopic section to form a fence structure together with the fixed guard plate for blocking and limiting goods transported by the telescopic device, or can be synchronously retracted and arranged in sequence in a second direction perpendicular to the first direction; and the application can solve the problem that goods are prone to falling and being damaged during transportation due to the fact that the fixed section and the telescopic section of the telescopic conveyor are not provided with a protection device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of telescopic machines, in particular to a telescopic device for logistics transportation. BACKGROUND

[0002] A telescopic conveyor is a common conveyor with a telescopic mechanism added to make the conveyor freely telescopic in the length direction, so as to control the length of the conveyor at any time. The telescopic conveyor can transport materials in both directions, and can be used with other conveying equipment and material sorting systems to realize automatic production of material in and out of the warehouse or vehicle loading and unloading, and has been widely used in various industries.

[0003] The telescopic conveyor generally includes a fixed section and a telescopic section arranged in sequence. The telescopic section includes a main telescopic section and at least one secondary telescopic section. The secondary telescopic section can move along the main telescopic section. The main telescopic section can move along the fixed section. In the conventional telescopic conveyor, the multiple telescopic sections need to be nested and connected when retracted. If a protective plate is loaded on the top surface of each telescopic section, and the protective plate moves back with the telescopic section, the protective plate will interfere and collide with the fixed section and the telescopic section. Therefore, the top surface of the telescopic section of the conventional telescopic conveyor is not equipped with a protective plate, which leads to the goods transported by the telescopic conveyor falling off the fixed section or the telescopic section and being damaged. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the present application is to provide a telescopic device for logistics transportation.

[0005] In order to achieve the above purpose, the technical solution adopted by the present application includes: a fixed section; a telescopic section having a main telescopic section and at least one secondary telescopic section connected in sequence along a first direction, the main telescopic section being nested in the fixed section at one end away from the secondary telescopic section; a protective plate assembly including a fixed protective plate, a first floating protective plate and a second floating protective plate, the fixed protective plate being arranged on both sides of the top of the fixed section, the first floating protective plate being arranged on both sides of the top of the main telescopic section and placed outside the fixed protective plate, and the second floating protective plate being arranged on both sides of the top of the secondary telescopic section and placed outside the first floating protective plate.

[0006] Among them, the first floating protective plate and the second floating protective plate can be synchronized with the telescopic section to extend to form a surrounding structure with the fixed protective plate to block and limit the goods transported by the telescopic device, or to be synchronized and retracted and arranged in sequence in a second direction perpendicular to the first direction.

[0007] In the preferred technical solution of the telescopic device for logistics transportation described above, the top of the fixed protective plate, the first floating protective plate and the second floating protective plate all have a limiting flange formed by folding the flange outward, and the limiting flanges of the fixed protective plate, the first floating protective plate and the second floating protective plate are nested in sequence.

[0008] In the preferred technical scheme of the telescopic device for logistics transportation, the fixed guard plate, the first floating guard plate and the second floating guard plate have expansion parts extending obliquely away from the fixed section from the bottom end to the top end.

[0009] In the preferred technical scheme of the telescopic device for logistics transportation, the outer side of the fixed guard plate is provided with a first reinforcing rib, and the outer side of the first floating guard plate is provided with a second reinforcing rib; the first reinforcing rib and the fixed guard plate form a first channel containing the first floating guard plate, and the second reinforcing rib and the first floating guard plate form a second channel containing the second floating guard plate.

[0010] In the preferred technical scheme of the telescopic device for logistics transportation, the bottom surface of the first floating guard plate is connected to the main telescopic section through a first adjusting base, and the bottom surface of the rear end of the first floating guard plate is provided with a first lifting plate in sliding contact with the top surface of the fixed section, so that the first floating guard plate remains horizontal when moving.

[0011] The bottom surface of the second floating guard plate is connected to the secondary telescopic section through a second adjusting base, and the bottom surface of the rear end of the second floating guard plate is provided with a second lifting plate in sliding contact with the top surface of the main telescopic section, so that the second floating guard plate remains horizontal when moving.

[0012] In the preferred technical scheme of the telescopic device for logistics transportation, the first lifting plate and the second lifting plate are made of low-friction coefficient material or coated with low-friction coefficient material on the surface, so as to reduce the frictional resistance of the first floating guard plate and the second floating guard plate when moving.

[0013] In the preferred technical scheme of the telescopic device for logistics transportation, a stop plate is installed in the first gap between the main telescopic section and the first floating guard plate and the second gap between the secondary telescopic section and the second floating guard plate through a thrust mechanism.

[0014] When the telescopic section is extended, the thrust mechanism can limit the stop plate in the second direction, so that the stop plate remains in the first gap and the second gap; when the telescopic section is retracted, the thrust mechanism can push the stop plate out of the first gap and the second gap.

[0015] In the preferred technical scheme of the telescopic device for logistics transportation, the thrust mechanism includes at least two spaced pin shafts fixed on the main telescopic section and the secondary telescopic section, and a guide hole opened on the stop plate.

[0016] The pin shaft is arranged in the guide hole, and when the telescopic section is retracted, the pin shaft slides along the guide hole and applies a pushing force to the stop plate to push it out of the first gap or the second gap.

[0017] In the preferred technical scheme of the telescopic device for logistics transportation, the guide hole comprises a straight part and an inclined part connected to each other; the inclined part penetrates the stop surface of the stop plate and is inclined relative to the first direction to form a guide channel for the sliding of the pin shaft; and the straight part extends along the first direction to form a stop channel for accommodating and limiting the pin shaft when the telescopic section is extended.

[0018] In the preferred technical scheme of the telescopic device for logistics transportation, the stop plate is further provided with mirror holes which are symmetrical to each other and have the same structure as the guide hole.

[0019] The telescopic device has the advantages that the fixed guard plate, the first floating guard plate and the second floating guard plate are arranged in a step-by-step and synchronous telescopic manner, so that a continuous fence structure is formed when the telescopic device is unfolded to prevent the goods from falling, and the second flat plate part and the third flat plate part are used to realize zero-interference storage when the telescopic device is retracted, thereby significantly reducing the damage rate of the goods and improving the loading and unloading efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A schematic view of the telescopic device without the guard plate assembly of the present application;

[0021] Figure 2 A schematic view of the telescopic device after the guard plate assembly of the present application is installed;

[0022] Figure 3 A front view of the present application;

[0023] Figure 4 A schematic view of the telescopic device without the stop plate of the present application;

[0024] Figure 5 A connection schematic view of the fixed guard plate, the first floating guard plate and the second floating guard plate;

[0025] Figure 6 A connection schematic view of the first adjustment base and the first floating guard plate;

[0026] Figure 7 A left view of the fixed guard plate, the first floating guard plate and the second floating guard plate after connection;

[0027] Figure 8 A structure view of the stop plate;

[0028] Figure 9 A schematic view of the stop plate installed on the main telescopic section;

[0029] In the diagram: Fixed section 1, telescopic section 2, main telescopic joint 21, secondary telescopic joint 22, fixed guard plate 31, first blocking part 311, first flat part 312, first floating guard plate 32, second blocking part 321, second flat part 322, second floating guard plate 33, third blocking part 331, third flat part 332, limiting flange 4, expansion part 5, first reinforcing rib 6, second reinforcing rib 7, first adjusting base 8, first waist hole 81, second waist hole 82, first lifting plate 9, second adjusting base 10, second lifting plate 11, first gap 12, second gap 13, stop plate 14, guide hole 141, inclined part 1411, straight part 1412, mirror hole 142, pin 15. Detailed Implementation

[0030] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] like Figures 1 to 9 As shown, the telescopic device for logistics transportation of the present invention includes: a fixed section 1; a telescopic section 2 having a main telescopic joint 21 and at least one secondary telescopic joint 22 nested together in a first direction, wherein the main telescopic joint 21 is nested in the fixed section 1 at the end away from the secondary telescopic joint 22; and a guard plate assembly including a fixed guard plate 31, a first floating guard plate 32, and a second floating guard plate 33. The fixed guard plate 31 is disposed on both sides of the top of the fixed section 1, the first floating guard plate 32 is disposed on both sides of the top of the main telescopic joint 21 and placed outside the fixed guard plate 31, and the second floating guard plate 33 is disposed on both sides of the top of the secondary telescopic joint 22 and placed outside the first floating guard plate 32. The first floating guard plate 32 and the second floating guard plate 33 can extend synchronously with the telescopic section 2 to form a barrier structure with the fixed guard plate 31 to block and limit the goods transported by the telescopic device, or retract synchronously and be stacked in a second direction perpendicular to the first direction.

[0032] It should be noted that in the existing technology, telescopic conveyors generally consist of a fixed section, a telescopic section, a telescopic drive structure, and a conveying structure. The fixed section is the fixed body part of the telescopic conveyor, the telescopic section is composed of several telescopic joints, and the telescopic drive structure can drive several telescopic joints to extend or retract synchronously into the fixed section, thereby realizing the adjustment of the conveying length of the telescopic conveyor.

[0033] For the purpose of detailed description of the embodiments of the present application, the movement direction of the telescopic section 2 is set as the first direction, the width direction of the fixed section 1 perpendicular to the first direction is set as the second direction, in addition, the extension direction of the telescopic section 2 is set as the direction "front", and the retraction direction of the telescopic section 2 is set as the direction "back". The fixed section 1, the main telescopic section 21 and the secondary telescopic section 22 are arranged in the first direction in the order from back to front, and the rear end of the main telescopic section 21 is nested in the front end of the fixed section 1, and the rear end of the secondary telescopic section 22 is nested in the front end of the main telescopic section 21, so that the main telescopic section 21 can move telescopically relative to the fixed section 1, and the secondary telescopic section 22 can move telescopically relative to the main telescopic section 21.

[0034] Referring to Figures 1 to 3 In the telescopic device of the present application, the telescopic section capable of being nested into the fixed section 1 is set as the main telescopic section 21, and the remaining telescopic sections are set as the secondary telescopic sections 22. The number of the secondary telescopic sections 22 can be one, two or other possible numbers. The relationship between the main telescopic section 21 and the secondary telescopic sections 22 is limited to be arranged in the order from back to front along the first direction.

[0035] In the conventional telescopic conveyor, the multiple telescopic sections need to be completely nested when retracted. If the protective plates are loaded on the top surface of each telescopic section, the protective plates will interfere and collide with the fixed section 1 and the telescopic section 2 when the telescopic sections retract, and thus the top surface of the fixed section 1 and the telescopic section 2 of the conventional telescopic conveyor are not equipped with protective plates, which leads to the goods falling off the telescopic conveyor and being damaged when the goods are conveyed by the conveying belt of the telescopic conveyor without being blocked on both sides.

[0036] In the telescopic device of the present application, the fixed section 1 is provided with the fixed protective plates 31 on both sides along the second direction through locking bolts, the main telescopic section 21 is provided with the first floating protective plates 32 on both sides along the second direction, and the secondary telescopic section 22 is provided with the second floating protective plates 33 on both sides along the second direction. In the second direction, the first floating protective plates 32 are located outside the fixed protective plates 31, and the second floating protective plates 33 are located outside the first floating protective plates 32. The fixed protective plates 31, the first floating protective plates 32 and the second floating protective plates 33 all have blocking parts extending in the vertical direction and flat plate parts extending along the second direction at the bottom ends thereof. For the purpose of detailed description of the blocking parts and the flat plate parts of the protective plates in the present application, the blocking parts of the fixed protective plates 31, the first floating protective plates 32 and the second floating protective plates 33 are sequentially named as the first blocking part 311, the second blocking part 321 and the third blocking part 331, and the flat plate parts are sequentially named as the first flat plate part 312, the second flat plate part 322 and the third flat plate part 332.

[0037] It should be noted that the bottom end height of the first floating guard plate 32 is configured to be higher than the first flat plate portion 312, the bottom end height of the second floating guard plate 33 is configured to be higher than the second flat plate portion 322, the bottom end heights of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are gradually increased, and the sizes of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are gradually reduced.

[0038] When the telescopic section 2 is not extended out of the fixed section 1, the main telescopic section 21 is nested in the fixed section 1, the secondary telescopic section 22 is nested in the main telescopic section 21, and correspondingly, the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are stacked in the second direction and the front ends of the guard plates are close to each other.

[0039] When the telescopic section 2 is extended out of the fixed section 1, the main telescopic section 21 and the secondary telescopic section 22 are gradually unfolded and extended, the main telescopic section 21 drives the first floating guard plate 32 to move forward in the first direction, the secondary telescopic section 22 drives the second floating guard plate 33 to move forward in the first direction, and after the telescopic section 2 is moved to the position, the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 form a surrounding structure, so that when the conveying belt of the telescopic machine conveys the goods, the surrounding structure extending in the first direction can surround the goods to reduce or even avoid the problem of goods falling and being damaged, reduce the damage rate of the goods in the loading and unloading process, and improve the market share of the telescopic device of the present application.

[0040] When the telescopic section 2 is retracted into the fixed section 1, the main telescopic section 21 drives the first floating guard plate 32 to move backward in the first direction, so that the second flat plate portion 322 of the first floating guard plate 32 slides on the first flat plate portion 312 of the fixed guard plate 31, the secondary telescopic section 22 drives the second floating guard plate 33 to move backward in the first direction, so that the third flat plate portion 332 of the second floating guard plate 33 slides on the second flat plate portion 322 of the first floating guard plate 32, and the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are gradually stacked in the second direction, which ensures that the first floating guard plate 32 and the second floating guard plate 33 can be retracted with the main telescopic section 21 and the secondary telescopic section 22 without interfering with the fixed section 1 or the telescopic section 2.

[0041] In one or more embodiments, the top of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 has a limiting flange 4 which is outwardly folded and bent, and the limiting flanges 4 of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are nested in turn.

[0042] Referring to Figures 5 to 7, the limiting flanges 4 of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 are nested and connected in sequence, and when the guard plates are arranged in layers in the second direction, the limiting flanges 4 of the guard plates can limit each other in the second direction, thereby avoiding the problem of tilting and falling to the outside in the second direction when the guard plates are stretched and contracted, ensuring the stability of the movement of the guard plates, and at the same time, through the arrangement, the strength of the guard plates for blocking goods can be improved, and the phenomenon of tilting of the fixed guard plate 31, the first floating guard plate 32 or the second floating guard plate 33 caused by the impact of goods can be reduced.

[0043] In one or more embodiments, the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 have an expansion part 5 extending obliquely away from the fixed section 1 from the bottom end to the top end.

[0044] Referring to Figure 7 Each guard plate has an expansion part 5 extending obliquely outward in the second direction, and through this arrangement, the conveyor belt of the telescopic machine will not hinder the conveying of goods when transporting goods.

[0045] In one or more embodiments, the fixed guard plate 31 has a first reinforcing rib 6 on the outer side, and the first floating guard plate 32 has a second reinforcing rib 7 on the outer side; the first reinforcing rib 6 and the fixed guard plate 31 form a first channel containing the first floating guard plate 32, and the second reinforcing rib 7 and the first floating guard plate 32 form a second channel containing the second floating guard plate 33.

[0046] Referring to Figures 5 to 7 The two ends of the first reinforcing rib 6 are connected to the top end of the fixed guard plate 31 and the first flat part 312, respectively, and the two ends of the second reinforcing rib 7 are connected to the top end of the first floating guard plate 32 and the second flat part 322, respectively. The shapes of the first reinforcing rib 6 and the second reinforcing rib 7 are approximately "<" structures, or alternatively, the shapes of the first reinforcing rib 6 and the second reinforcing rib 7 can be linear, without specific limitations. Through this arrangement, the fixing strength of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 in the second direction can be improved, the possibility of deformation of the guard plates due to the extrusion of goods can be reduced, and the service life of the guard plates can be improved.

[0047] Referring to Figures 5 to 7A first channel for the movement of the first floating guard plate 32 is formed between the first reinforcing rib 6 and the first blocking portion 311 of the fixed guard plate 31, and a second channel for the movement of the second floating guard plate 33 is formed between the second reinforcing rib 7 and the second blocking portion 321 of the first floating guard plate 32. This arrangement allows the first floating guard plate 32 to be further confined within the first channel by the first reinforcing rib 6, and the second floating guard plate 33 to be confined within the second channel by the second reinforcing rib 7, thereby further improving the connection strength of each guard plate in the second direction.

[0048] In one or more embodiments, the bottom surface of the first floating guard plate 32 is connected to the main telescopic joint 21 via the first adjusting base 8, and the bottom surface of the rear end of the first floating guard plate 32 is provided with a first lifting plate 9 that slides in contact with the top surface of the fixed section 1 so that the first floating guard plate 32 remains horizontal during movement; the bottom surface of the second floating guard plate 33 is connected to the secondary telescopic joint 22 via the second adjusting base 10, and the bottom surface of the rear end of the second floating guard plate 33 is provided with a second lifting plate 11 that slides in contact with the top surface of the main telescopic joint 21 so that the second floating guard plate 33 remains horizontal during movement.

[0049] See Figure 5 , Figure 6 The front end of the main telescopic joint 21 is provided with a first adjusting base 8. The top of the first adjusting base 8 is connected to the bottom surface of the second flat plate portion 322 of the first floating guard plate 32, which is used to raise the height of the front end of the first floating guard plate 32. The bottom surface of the second flat plate portion 322 at the rear end of the first floating guard plate 32 is provided with a first lifting plate 9. When the first floating guard plate 32 is placed on the side of the fixed guard plate 31, the rear end of the first floating guard plate 32 slides in contact with the top surface of the first flat plate portion 312 of the fixed guard plate 31 through the first lifting plate 9.

[0050] See Figures 2 to 6 The front end of the secondary telescopic joint 22 is provided with a second adjustment base 10. The top of the second adjustment base 10 is connected to the bottom surface of the third flat plate portion 332 of the second floating guard plate 33, which is used to raise the height of the front end of the second floating guard plate 33. The bottom surface of the third flat plate portion 332 at the rear end of the second floating guard plate 33 is provided with a second lifting plate 11, so that when the second floating guard plate 33 is placed on the side of the first floating guard plate 32, the rear end of the second floating guard plate 33 slides in contact with the top surface of the second flat plate portion 322 of the first floating guard plate 32 through the second lifting plate 11.

[0051] It should be noted that the first adjusting base 8 and the second adjusting base 10 have the same structure, and the difference between them is only that the positions are different, the parts are lifted and the heights are different. The first adjusting base 8 is taken as an example for the following description: The first adjusting base 8 has a horizontal part and a vertical part perpendicular to each other. The horizontal part is provided with a first waist hole 81 penetrating in the second direction. The vertical part is provided with a second waist hole 82 penetrating in the vertical direction. A bolt threaded on the main telescopic joint 21 is arranged in the first waist hole 81, so that the first adjusting base 8 can be adjusted in position along the second direction on the main telescopic joint 21. A pin is arranged in the second waist hole 82. The front end bottom surface of the second flat plate part 322 is penetrated by the pin. The bottom surface of the second flat plate part 322 can be connected to the horizontal part of the first adjusting base 8 through an elastic member, which can be a spring. Through this arrangement, the position of the first floating guard plate 32 in the second direction can be adjusted. At the same time, the second flat plate part 322 is connected to the vertical part of the first adjusting base 8 through the pin in the second waist hole 82 and the elastic member, so as to realize the self-adaptive adjustment of the height of the front end of the first floating guard plate 32, and meet the use requirements in different situations. In other possible embodiments, the second flat plate part 322 is locked and fixed on the vertical part of the first adjusting base 8 by the bolt arranged in the second waist hole 82. Through this arrangement, the height of the front end of the first floating guard plate 32 can be fixed, and the stability of the telescopic movement of the first floating guard plate 32 can be improved.

[0052] In one or more embodiments, the first lifting plate 9 and the second lifting plate 11 are made of a low-friction coefficient material, or the surface is coated with a low-friction coefficient material, so as to reduce the frictional resistance in the movement of the first floating guard plate 32 and the second floating guard plate 33. The low-friction coefficient material can be PTFE, which is not specifically limited, and can be selected according to actual production needs.

[0053] It can be understood that the first floating guard plate 32 slides on the first flat plate part 312 of the fixed guard plate 31 by means of the first lifting plate 9, and the second floating guard plate 33 slides on the second flat plate part 322 of the first floating guard plate 32 by means of the second lifting plate 11, so as to greatly reduce the frictional contact surface between the first floating guard plate 32 and the fixed guard plate 31, and the frictional contact surface between the second floating guard plate 33 and the first floating guard plate 32. In addition, the first lifting plate 9 and the second lifting plate 11 are specially treated to further reduce the frictional resistance in the movement of the first floating guard plate 32 and the second floating guard plate 33, improve the smoothness of the telescopic movement of each guard plate, and reduce the generation of abnormal sound.

[0054] It should be noted that, since the top surface height of the fixed section 1, the main telescopic section 21 and the secondary telescopic section 22 gradually decreases in the vertical direction, and the bottom end height of the fixed guard plate 31, the first floating guard plate 32 and the second floating guard plate 33 gradually increases in the vertical direction, therefore, the first gap 12 is formed between the main telescopic section 21 and the first floating guard plate 32, the second gap 13 is formed between the secondary telescopic section 22 and the second floating guard plate 33, and the size of the second gap 13 is larger than the size of the first gap 12, in order to avoid the goods being transported from falling through the first gap 12 or the second gap 13 and being damaged, the stop plate 14 with a size suitable for the first gap 12 and the second gap 13 is used to block the first gap 12 and the second gap 13.

[0055] In addition, in order to avoid the stop plate 14 from falling off when blocking the goods, or the stop plate 14 from interfering with the fixed section 1 or the telescopic section 2 when the telescopic section 2 is retracted, the application installs the stop plate 14 in the first gap 12 and the second gap 13 by means of the thrust mechanism, so that when the telescopic section 2 is extended, the thrust mechanism can limit the stop plate 14 in the second direction, so that the stop plate 14 remains in the first gap 12 and the second gap 13, and when the telescopic section 2 is retracted, the thrust mechanism can push the stop plate 14 out of the first gap 12 and the second gap 13.

[0056] In a specific embodiment of the thrust mechanism, the thrust mechanism includes at least two spaced-apart pin shafts 15 fixed to the main telescopic section 21 and the secondary telescopic section 22, and at least two guide holes 141 opened on each stop plate 14; the pin shaft 15 can be arranged in the guide hole 141, and when the telescopic section 2 is retracted, the pin shaft 15 slides along the guide hole 141 and applies a pushing force to the stop plate 14 to push it out of the first gap 12 or the second gap 13.

[0057] Referring to Figure 4 , Figure 8 , Figure 9 When the main telescopic section 21 and the secondary telescopic section 22 are extended to transport the goods, the first gap 12 between the main telescopic section 21 and the first floating guard plate 32, and the second gap 13 between the secondary telescopic section 22 and the second floating guard plate 33 are exposed, at this time, the corresponding number of stop plates 14 are placed in the first gap 12 and the second gap 13, and the pin shaft 15 at the corresponding position is arranged in the guide hole 141 of the stop plate 14, and each stop plate 14 is limited by at least two pin shafts 15, thereby ensuring the fixing effect of the stop plate 14; when the main telescopic section 21 and the secondary telescopic section 22 are retracted, the pin shaft 15 moving together can slide along the guide hole 141 to apply a pushing force to the stop plate 14, thereby pushing the stop plate 14 out of the first gap 12 or the second gap 13, realizing the automatic feeding of the stop plate 14, and reducing the process of manual intervention.

[0058] In one or more embodiments, the guide hole 141 comprises a straight portion 1412 and an inclined portion 1411 which are connected to each other; the inclined portion 1411 penetrates the stop side surface of the stop plate 14 and is inclined relative to the first direction to form a guide channel for the pin shaft 15 to slide; the straight portion 1412 extends along the first direction to form a stop channel for accommodating and limiting the pin shaft 15 when the telescopic section 2 is extended.

[0059] Referring to Figure 3 , Figure 8 , Figure 9 When the main telescopic section 21 and the secondary telescopic section 22 are extended to expose the first gap 12 and the second gap 13, the worker can place a corresponding number and size of stop plates 14 in the first gap 12 and the second gap 13, and make the pin shaft 15 enter the guide channel through the penetration, and then control the stop plate 14 to move backward so that the pin shaft 15 enters the stop channel and is limited. By limiting the two pin shafts 15 in the straight portions 1412 of the two guide holes 141, the fixing strength of the stop plate 14 in the second direction can be effectively improved, thereby ensuring the stop effect of the stop plate 14 on the goods.

[0060] Referring to Figure 3 , Figure 8 , Figure 9 When the main telescopic section 21 is retracted, the pin shaft 15 moves backward in the first direction, and when the pin shaft 15 moves to the guide channel through the guide hole 141 stop channel and the rear end of the stop plate 14 abuts against the front end of the fixed section 1, the pin shaft 15 abuts against the inner wall of the guide channel and applies a pushing force to the stop plate 14 to gradually push the stop plate 14 out of the first gap 12, thereby achieving the automatic material withdrawal of the stop plate 14 in the first gap 12. Correspondingly, when the secondary telescopic section 22 is retracted, the stop plate 14 in the second gap 13 will be pushed out in the same way as described above.

[0061] In one or more embodiments, the stop plate 14 is further provided with mirror image holes 142 which have the same structure as the guide holes 141 and are symmetrical to each other. Referring to Figure 8 , Figure 9 Each group of guide holes 141 and mirror image holes 142 is substantially in the shape of an "eight" on the stop plate 14; through this arrangement, when the stop plate 14 is placed in the forward direction, the pin shaft 15 can enter the guide hole 141, and when the stop plate 14 is placed in the reverse direction, the pin shaft 15 can enter the mirror image hole 142, thereby facilitating the worker to place the stop plate 14 in the first gap 12 and the second gap 13.

[0062] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A telescoping device for use in logistics transportation, characterized in that, The utility model relates to a telescopic section, a fixed section, a fixed guard plate, a first floating guard plate and a second floating guard plate, and a thrust mechanism. The telescopic section comprises a main telescopic section and at least one secondary telescopic section connected in sequence along a first direction. The fixed guard plate is arranged on both sides of the top of the fixed section. The first floating guard plate is arranged on both sides of the top of the main telescopic section and placed outside the fixed guard plate. The second floating guard plate is arranged on both sides of the top of the secondary telescopic section and placed outside the first floating guard plate. The first floating guard plate and the second floating guard plate can be synchronously extended with the telescopic section to form a fence structure together with the fixed guard plate to block and limit the goods transported by the telescopic device, or synchronously retracted and arranged in sequence along a second direction perpendicular to the first direction. The bottom surface of the first floating guard plate is connected to the main telescopic section through a first adjusting base. The bottom surface of the rear end of the first floating guard plate is provided with a first lifting plate in sliding contact with the top surface of the fixed section to keep the first floating guard plate horizontal during movement. The bottom surface of the second floating guard plate is connected to the secondary telescopic section through a second adjusting base. The bottom surface of the rear end of the second floating guard plate is provided with a second lifting plate in sliding contact with the top surface of the main telescopic section to keep the second floating guard plate horizontal during movement. A first gap is formed between the main telescopic section and the first floating guard plate. A second gap is formed between the secondary telescopic section and the second floating guard plate.

2. The telescoping device for logistic transportation of claim 1, wherein: A stop plate is installed in the first gap and the second gap through a thrust mechanism.

3. The telescoping device for logistic transportation of claim 2, wherein: When the telescopic section is extended, the thrust mechanism can limit the stop plate in the second direction to keep the stop plate in the first gap and the second gap. When the telescopic section is retracted, the thrust mechanism can push the stop plate out of the first gap and the second gap. The thrust mechanism comprises at least two spaced pin shafts fixed to the main telescopic section and the secondary telescopic section, and a guide hole formed in the stop plate. The pin shafts are arranged in the guide hole. When the telescopic section is retracted, the pin shafts slide along the guide hole and apply a pushing force to the stop plate to push it out of the first gap or the second gap. The guide hole comprises a straight part and an inclined part connected in sequence. The inclined part penetrates the stop side surface of the stop plate and is inclined relative to the first direction to form a guide channel for the pin shafts to slide. The straight part extends along the first direction to form a stop channel for accommodating and limiting the pin shafts when the telescopic section is extended. The top of the fixed guard plate, the first floating guard plate and the second floating guard plate are provided with limiting flanges formed by outwardly folding the top. The limiting flanges of the fixed guard plate, the first floating guard plate and the second floating guard plate are nested in sequence. The fixed guard plate, the first floating guard plate and the second floating guard plate are provided with expansion parts extending obliquely away from the fixed section from the bottom end to the top end.

4. The telescoping device for logistic transportation of claim 3, wherein: The outer side of the fixed guard plate is provided with a first reinforcing rib, and the outer side of the first floating guard plate is provided with a second reinforcing rib; the first reinforcing rib and the fixed guard plate form a first channel containing the first floating guard plate, and the second reinforcing rib and the first floating guard plate form a second channel containing the second floating guard plate.

5. The telescoping device for logistic transportation of claim 1, wherein: The first lifting plate and the second lifting plate are made of a low-friction coefficient material or are coated with a low-friction coefficient material on the surface, so as to reduce the frictional resistance in the movement of the first floating guard plate and the second floating guard plate.

6. The telescoping device for logistic transportation of claim 1, wherein: The stop plate is further provided with mirror holes which are the same as the guide hole structure and symmetrical to each other.

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