Connecting and disconnecting mechanism

Abstract

The connecting and disconnecting mechanism comprises a traction base part and a lap joint component, the traction base part comprises a traction lower base, and the lap joint component comprises a lap joint base, a traction lower base and a lap joint lower base. The lap joint component comprises a lap joint base, the lap joint shovel is connected with or integrated with the lap joint base, the lap joint component further comprises a limiting tongue component, the limiting tongue component is installed on the lap joint component and positioned to be adjacent to the lap joint shovel, the limiting tongue component can be switched between a limiting state and a passing state relative to the lap joint shovel, and in the limiting state, the limiting tongue component is not in contact with the lap joint shovel. One part of the limiting tongue component upwards protrudes out of the lap joint shovel in the vertical direction; in the passing state, the limiting tongue component does not protrude out of the lap joint shovel upwards in the vertical direction, and the limiting tongue component abuts against the lower surface of the traction lower base of the traction base part. The connecting and disconnecting mechanism can prevent a pairing lap joint device of cargo transportation equipment from accidentally moving beyond a lap joint shovel to hinder normal lap joint operation when the pairing lap joint device is connected and guided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the freight electric machinery field used in port or freight distribution center, specifically, relate to a kind of interface and unhooking mechanism used in freight vehicle. BACKGROUND

[0002] In industrial scenarios such as airports, seaports, land ports, industrial parks and logistics centers, it is necessary to transport goods arriving from a specific area to another specific area in order to transport the goods out of the field or to stack them in place. Usually, goods are stacked in transport equipment such as pallets or shelves, so freight vehicles such as logistics trucks and trailers are often used to interface with the transport equipment with goods, transport them to a specific location, and then unhook them before subsequent transport or processing of the goods.

[0003] The interface and unhooking mechanism mounted on the freight vehicle is usually used to interface and unhook the transport equipment, and the interface and unhooking mechanism includes a latching portion for guiding the mating latching device of the transport equipment and a pulling portion for locking and unlocking the mating latching device. The latching portion can have a guide to better guide the mating latching device through the latching portion into the interface and unhooking mechanism, and then be locked by the pulling portion. However, this interface and unhooking mechanism ignores the need to limit the movement of the mating latching device, so that the mating latching device can move beyond the latching portion and enter the wrong position, which cannot be locked by the pulling portion. This greatly affects the work efficiency of the interface and unhooking operation. SUMMARY

[0004] In order to solve the problems and defects in the prior art, an improved interface and unhooking mechanism is proposed.

[0005] According to the utility model, an interface and unhooking mechanism is provided, which includes a pulling base and a latching member. The pulling base includes a pulling lower base, and the latching member includes a latching base and a latching shovel connected to the latching base. The latching member further includes a limiting tongue member installed to the latching member and positioned adjacent to the latching shovel, and can be converted between a limiting state and a passing state relative to the latching shovel. In the limiting state, a part of the limiting tongue member protrudes upward beyond the latching shovel in the vertical direction. In the passing state, the limiting tongue member does not protrude upward beyond the latching shovel in the vertical direction, and abuts against the lower surface of the pulling lower base of the pulling base.

[0006] With this arrangement, the limiting tongue member prevents the movement of the mating latching device of the interfaced transport equipment beyond the latching shovel when it is in the limiting state, and abuts against the pulling lower base when it is in the passing state, which does not affect the further latching of the mating latching device moving beyond the latching shovel.

[0007] Preferably, the hitching mechanism further comprises a displacement member extending in the vertical direction, which, in its upper portion, passes through the traction base and, in its lower portion, is fastened to the overlap member, wherein the displacement member guides the overlap member in the vertical direction relative to the traction base between the hitching position, the picking-up position and the driving position. In the hitching position, the overlap member is adjacent to the upper surface of the traction lower base, wherein the limiting tongue member is in the passage state; in the picking-up position, the overlap member is distanced from the traction lower base, wherein the limiting tongue member is in the limiting state; and in the driving position, the overlap member is between the hitching position and the picking-up position, wherein the limiting tongue member is in the limiting state.

[0008] With this arrangement, the transition between the limiting state and the passage state of the overlap member is coupled to the transition between the hitching position, the picking-up position and the driving position of the displacement member, so that the overlap member can better assist the counterpart overlap device of the hitched goods transport equipment.

[0009] According to an aspect of the present disclosure, the limiting tongue member comprises a first section and a second section integrally extending from the first section, the first section being movably connected to the overlap base, and the second section being configured to provide a portion of the limiting tongue member protruding upwardly of the overlap scoop in the vertical direction. Preferably, the second section has a width in the lateral direction in the limiting state which is smaller than the width of the first section. In this way, the limiting tongue member can be stably mounted to the overlap base.

[0010] According to an aspect of the present disclosure, the overlap base further comprises a base plate in which an opening is provided, which is positioned in the longitudinal direction immediately adjacent to the overlap scoop, through which the second section of the limiting tongue member moves, and a mounting plate extending vertically relative to the base plate, wherein the first section of the limiting tongue member is connected to the mounting plate by means of a resilient return assembly, and wherein the resilient return assembly biases the limiting tongue member in the limiting state. By means of the opening and the mounting plate, the limiting tongue member is mounted to the overlap base.

[0011] In a preferred embodiment of the present disclosure, the elastic return assembly comprises a pivot shaft arranged to pivotally connect the mounting plate with the first section of the latching tongue member, in a preferred embodiment mounted through the mounting plate and the first section of the latching tongue member at one end of the mounting plate, and a spring having one end fixed to the first section of the latching tongue member by means of a fastener away from the pivot shaft and the other end fixed to the mounting plate. Preferably, the fastener is a bolt or screw. In an alternative embodiment, it is conceivable that the elastic return assembly comprises a peg and a socket extending in vertical direction, and the peg is inserted in the socket for translational movement, wherein an elastic member is arranged in the socket, which biases the peg to one end of the socket. Therein, the socket is provided on one of the mounting plate and the first section of the latching tongue member, and the peg is provided on the other one of the mounting plate and the first section of the latching tongue member. With this arrangement, the elastic return assembly is arranged to bias the latching tongue member in the latching state, such that the latching tongue member can always be in the latching state without being subjected to a pressing force from the towing undercarriage, and can be moved in pivotal or translational movement to the passage state when subjected to the pressing force.

[0012] Preferably, the spring is fixed to the mounting plate at a middle position in the lateral direction, below the opening. In this way, when the latching tongue member is pivoted to the passage position, the spring extends substantially in vertical direction, in its state of maximum elastic force, and can quickly return the latching tongue member to the latching state when it is no longer subjected to the pressing force.

[0013] According to an aspect of the present disclosure, the mounting plate further comprises a recess below the opening, which accommodates the fastener when the latching tongue member is in the latching state. The recess is provided such that the first section of the latching tongue member, when in the latching state, has the fastener for mounting the spring fixed thereto, which is caught in the recess, thereby preventing the latching tongue member from continuing to pivot upwards under the action of the spring.

[0014] According to an aspect of the present disclosure, the mounting plate is arranged below the base plate of the overlap base, and the mounting plate and the latching tongue member are arranged in parallel and plate-like. In this way, it is advantageous to keep the upper face of the overlap base flat and aesthetically pleasing. Of course, it is also conceivable in alternative embodiments to arrange the mounting plate above or through the overlap base, as long as it allows the latching tongue member to move between the latching state and the passage state.

[0015] According to an aspect of the present disclosure, the overlap shovel has a first end in the longitudinal direction and a second end in the vertical direction further away from the towing undercarriage than the first end, wherein a cutout is centrally opened at the second end, and wherein the latching tongue member is proximate to the first end. The cutout is preferably dimensioned slightly smaller than the size of the counterpart overlap device of the goods transport equipment, thereby allowing the overlap shovel to engage the counterpart overlap device, without accidentally picking up other items of smaller size. BRIEF DESCRIPTION OF DRAWINGS

[0016] For a more complete understanding of the present disclosure, reference is made to the following description taken in conjunction with the accompanying drawings. The drawings are not intended to be to scale. In the drawings:

[0017] Figure 1 is a perspective view of the pick-up and drop-off mechanism with the lapping member in the pick-up position and the limiting tongue member in the limiting state, according to a preferred embodiment of the present utility model;

[0018] Figure 2 is a perspective view of the pick-up and drop-off mechanism with the lapping member in the pick-up position and the limiting tongue member in the limiting state, according to a preferred embodiment of the present utility model;

[0019] Figure 3 is a perspective view of the pick-up and drop-off mechanism with the lapping member in the pick-up position and the limiting tongue member in the limiting state, according to a preferred embodiment of the present utility model; Figure 1 is a detailed perspective view of the limiting tongue member of the pick-up and drop-off mechanism;

[0020] Figure 4 is a front view of the limiting tongue member, wherein the limiting tongue member is in the limiting state; Figure 3

[0021] Figure 5 is a top view of the limiting tongue member; and Figure 3

[0022] Figure 6 is another front view of the limiting tongue member, wherein the limiting tongue member is in the passing state. Figure 2

[0023] List of Reference Signs

[0024] 100 pick-up and drop-off mechanism

[0025] 110 lapping control member

[0026] 120 traction control member

[0027] 130 traction peg

[0028] 1 traction base

[0029] 101 lower traction base

[0030] 111 upper surface

[0031] 112 lower surface

[0032] 102 upper traction base

[0033] 103 traction base plate

[0034] 2 lapping member​​​

[0035] 3 LUG BASE

[0036] 31 UPPER FACE

[0037] 32 LOWER FACE

[0038] 33 SUBSTRATE

[0039] 34 SIDE WALL

[0040] 4 LUG SHOVEL

[0041] 41 FIRST END

[0042] 42 SECOND END

[0043] 43 CUTOUT

[0044] 5 LIMITING TONGUE MEMBER

[0045] 51 FIRST SEGMENT

[0046] 52 SECOND SEGMENT

[0047] 6 OPENING

[0048] 7 MOUNTING PLATE

[0049] 71 NOTCH

[0050] 8 ELASTIC RETURN ASSEMBLY

[0051] 81 PIVOT

[0052] 82 SPRING

[0053] 9 FASTENER

[0054] 10 DISPLACEMENT MEMBER

[0055] X LONGITUDINAL DIRECTION

[0056] Y TRANSVERSE DIRECTION

[0057] Z VERTICAL DIRECTION

[0058] YZ VERTICAL PLANE

[0059] XY HORIZONTAL PLANE DETAILED DESCRIPTION

[0060] The following description of the present invention with reference to the accompanying drawings shows specific embodiments in which the present invention can be put into practice. The embodiments are intended to fully describe the various aspects of the present invention in detail so that those skilled in the art can implement the present invention. Other embodiments may be utilized and may be changed without departing from the scope of the present invention. Therefore, the following description of the specific embodiments should not be considered restrictive. The scope of the present invention is limited only by the appended claims and the full range of equivalents covered by the claims. The same reference numerals are used throughout all drawings and the specific embodiments to refer to the same or similar parts.

[0061] The directional terms such as "upper", "lower", "high", "lower", "top", "bottom" etc. used in the present invention are relative to the position of the automatic hook-up / unhooking mechanism 100 in the horizontal plane. Figure 1 、 Figure 4 The position shown, in which the overlapping base 3 of the overlapping member 2 of the automatic connecting and disconnecting mechanism 100 is defined by being in a horizontal plane).

[0062] Direction X is the longitudinal direction, which is the direction from the bonding base 3 to the bonding shovel 4. Figure 5 The direction is shown from left to right; the vertical direction Z is the vertical direction or vertical height when the automatic connecting and disconnecting mechanism 100 is in the working position, and the directions X and Z are perpendicular to each other; the transverse direction Y is a direction perpendicular to both the longitudinal direction X and the vertical direction Z.

[0063] Figure 1 and Figure 2 The overall diagram of the hook-and-drop mechanism 100 is shown, along with the positional relationships between its components. The hook-and-drop mechanism 100 includes a traction base 1, a traction pin 130 located within the traction base 1, a splice member 2 located below the traction base 1 and extending generally in the longitudinal direction X, a displacement member 10 extending through the traction base 1 in the vertical direction Z and connected to the splice member 2, a splice control member 110 that controls the movement of the splice member 2 relative to the traction base 1 via the displacement member 10, and a traction control member 120 that controls the movement of the traction pin 130.

[0064] The traction base 1 includes a traction base plate 103, a traction upper base 102 and a traction lower base 101. The traction base plate 103 extends in a vertical plane YZ. The traction upper base 102 and the traction lower base 101 are both fixed to the traction base plate 103 at one end, extend parallel to each other in a horizontal plane XY, and are separated by a distance along the vertical direction Z.

[0065] The traction pin 130 is controlled by the traction control member 120 connected thereto to move between the traction upper base 102 and the traction lower base 101 along the vertical direction Z. Specifically, the traction pin 130 is movable between a locked position and an unlocked position.Figure 1 The towing pin 130 is shown in a locked position in which the towing pin 130 extends over the distance in vertical direction Z between the towing upper base 102 and the towing lower base 101, i.e. the towing pin 130 extends from top to bottom through the towing upper base 102 to the towing lower base 101, so that a counterpart docking device (not shown) of a cargo transport device can be locked in the towing base 1. Figure 2 The towing pin 130 is shown in an unlocked position in which the towing pin 130 does not extend between the towing upper base 102 and the towing lower base 101, so as to allow the counterpart docking device of the cargo transport device to move into or out of the towing upper base 102 and the towing lower base 101.

[0066] The docking member 2 is controlled by means of a displacement member 10, which is connected to a docking control member 110, in relation to the towing base 1 in vertical direction Z. In particular, the displacement member 10 extends in vertical direction Z, with its upper part passing through the towing base 1, in this case through the towing upper base 102 and the towing lower base 101, and its lower part being fastened to the docking member 2. The displacement member 10 can comprise a slide rod or the like facilitating displacement. The docking member 2 extends in general in longitudinal direction X, preferably as shown in Figure 1 and Figure 2 is fastened at one end to the displacement member. Of course, it is also conceivable in alternative embodiments that the displacement member 10 and the docking member 2 are integral. The docking control member 110 is connected to the displacement member 10, pulling the displacement member 10 in vertical direction Z, so that the displacement member 10 guides the docking member 2 in vertical direction in relation to the towing base 1. The docking member 2 can move or reside in any of a hitching position, as shown in Figure 1 , a pick-up position, as shown in Figure 2 , and at least one driving position (not shown in the figures). In the hitching position, the docking member 2 is in close proximity to the towing lower base of the towing base, as shown in Figure 2 , so as to facilitate the entry of the counterpart docking device of the cargo transport device from the docking member 2 into the towing base 1 or the exit from the towing base 1 into the docking member 2; in the pick-up position, the docking member 2 is distanced from the towing lower base of the towing base 1, as shown in Figure 1 , so as to facilitate the pick-up of the counterpart docking device of the cargo transport device; in the driving position or positions, the docking member is in a position between the hitching position and the pick-up position, so as to neither hit the hitched counterpart docking device nor be too close to the ground to impede driving.

[0067] Figures 3 to 6 The construction of the docking member 2 is shown in detail. The docking member 2 comprises in general a docking base 3 and a docking shovel 4. The docking base 3 extends in longitudinal direction X. In this case, in particular from Figure 4It can be clearly seen that the cross section of the bridge base 3 along the vertical plane YZ is generally inverted U-shaped, having a base extending along the horizontal plane XY and two side walls symmetrical with respect to the base along the longitudinal direction X, wherein the base has an upper portion 31 facing upward and a lower portion 32 opposite to the upper portion 31. Preferably, as Figure 3 As shown, the bridge base 3 also has a perforation in its base plate. Figure 1 As shown in FIG, the traction bolt 130 is coaxially arranged along the vertical direction Z, and its diameter is larger than the diameter of the traction bolt 130. In this way, if a traction bolt 130 with a longer vertical length is used, when the bridge member 2 is as shown in FIG. Figure 2 When in the overlapping position as shown, the traction bolt 130 can simultaneously penetrate the traction upper base 102, the traction lower base 101 and the overlapping base 3 from top to bottom, thereby firmly locking the matching overlapping device of the cargo transportation equipment in the connecting and disconnecting mechanism 100.

[0068] The shovel 4 is connected to the shovel base 3 at one end of the shovel base 3 in the longitudinal direction X by fastening means or integrally. Figure 1 and Figure 2 As clearly shown, the first end 41 is relatively close to the traction lower base 101 of the traction base 1 along the vertical direction Z, and the second end 42 is relatively far from the traction lower base 101 opposite to the first end 41. The upper surface of the lapping shovel 4 is generally inclined downward from the first end 41 to the second end 42 along the longitudinal direction X, so that the first end 41 is above the lapping base 3 and the second end 42 is below the lapping base 3. Figure 5 As shown, the lapping shovel 4 has a cutout 43 at its second end 42, the cutout 43 being centrally arranged at the second end 42 and preferably extending over half of the length of the lapping shovel 4 along the longitudinal direction X. In this example, the lapping shovel 4 is formed as shown in FIG. Figure 5 The shovel 4 is shaped like a trumpet in the top view, and two guide plates extending perpendicularly to the surface of the lapping shovel 4 are respectively provided at two opposite edges along the longitudinal direction X. The size of the cutout 43 is preferably designed to be slightly smaller than the size of the mating lapping device of the cargo transport equipment, so that the lapping shovel 4 can pick up the mating lapping device but does not mistakenly pick up other objects that are significantly smaller than the mating lapping device.

[0069] In this preferred embodiment, the overlapping member 2 further comprises a limiting tongue member 5. The limiting tongue member 5 generally extends in the vertical plane YZ and is mounted on the overlapping base 3 and adjacent to the first end 41 of the overlapping shovel 4. Specifically, Figure 6 As shown, the limiting tongue member 5 includes a first section 51 and a second section 52 extending from the first section 51. The limiting tongue member 5 can be switched between the limiting state and the passing state by means of the elastic reset assembly 8. When in the limiting state, a portion of the limiting tongue member 5, specifically the second section 52, isFigure 3 and Figure 4 The second section 52 protrudes along the vertical direction Z upward beyond the upper face 31 of the docking base 3, whereby a portion of the second section 52 protrudes beyond the upper face of the first end 41 of the docking shovel 4, thereby forming a stop portion limiting the movement of the counter-docking device of the cargo transport equipment beyond the docking shovel 4, in particular beyond the first end 41 of the docking shovel 4. When in the passage state, the limiting tongue member 5 does not protrude along the vertical direction Z generally beyond the docking shovel 4 as shown in Figure 6 In the present example, it can be seen that the limiting tongue member 5 is generally T-shaped, the width of the second section 52 in the transversal direction Y (measured when the limiting tongue member 5 is in the limiting state) is smaller than the first section 51 and tapers in a direction away from the first section 51. However, it is also conceivable in alternative embodiments that the second section 52 is equally wide as the first section 51. Figure 6

[0070] In order to install the limiting tongue member 5, the docking base 3 comprises an opening 6 and a mounting plate 7. The opening 6 is provided in the base plate of the docking base 3 and is located adjacent to the first end 41 of the docking shovel 4 as shown in Figure 3 and Figure 5 The opening 6 is preferably shaped and sized to correspond to the shape and size of the second section 52, in the present example the width of the opening 6 is approximately equal to the maximum width of the second section 52 of the limiting tongue member 5 in the transversal direction Y in the limiting state, to allow the movement of the second section 52 through the opening 6. The width of the opening 6 is in the present example smaller than the width of the first section 51 in the transversal direction Y to prevent the upward displacement of the first section 51 through the opening 6 out of the docking base 3.

[0071] The mounting plate 7 extends in a direction perpendicular to the upper face 31, preferably parallel to the vertical plane YZ, and is adjacent to the opening 6 to facilitate the installation of a connecting device connecting the limiting tongue member 5 to the mounting plate 7. In the present example, the mounting plate 7 is located below the docking base 3 and is fastened to the lower face 32 of the docking base 3. However, it is also conceivable in alternative embodiments that the mounting plate 7 is located above the docking base 3 or through the docking base 3, as long as it allows the movement of the limiting tongue member 5 relative to the docking member 2 and can be shifted between the limiting state, in which it protrudes along the vertical direction Z upward beyond the first end 41 of the docking shovel 4, and the passage state, in which it does not protrude along the vertical direction Z upward beyond the first end 41 of the docking shovel 4. In other alternative embodiments, the mounting plate 7 can be omitted and the side wall of the docking base 3 can be used as a mounting plate. Figure 4

[0072] ​​The limiting tongue member 5 is connected to the mounting plate 7 with its first section 51 by means of a resilient return assembly 8. This resilient return assembly 8 serves to bias the limiting tongue member 5 in the limiting state. In the present preferred embodiment, the resilient return assembly 8 enables the limiting tongue member 5 to pivot between the limiting state and the passing state, comprising a pivot axis 81 allowing the limiting tongue member 5 to pivot between the limiting state and the passing state, and a spring 82 tending to bias the limiting tongue member 5 in the limiting state. Specifically, the pivot axis 81 passes through the mounting plate 7 and the first section 51 of the limiting tongue member 5 at one end of the mounting plate 7, as shown in Figure 4 and Figure 6 allowing the first section 51 of the limiting tongue member 5 to pivot about this pivot axis 81. The spring 82 is fixed at its two ends to the first section 51 of the limiting tongue member 5 at a position distal from the pivot axis 81 by means of fasteners 9, and to the mounting plate 7 by means of a fixing, preferably such as a screw or bolt-nut assembly. Preferably, the mounting plate 7 is provided with a recess 71 at the position where the spring 82 is mounted to the limiting tongue member 5, the specific positioning of this recess 71 being such that it enables the accommodation of the fasteners 9 mounted on the limiting tongue member 5 when the limiting tongue member 5 is in the limiting state, as shown in Figure 4 limiting the further pivoting movement of the limiting tongue member 5 upwards under the action of the spring 82. In the present preferred embodiment, the spring 82 is fixed to the mounting plate 7 at a position intermediate along the transverse direction Y, but other positions of the spring 82 to the mounting plate 7 can also be envisaged in alternative embodiments, as long as the function of biasing the limiting tongue member 5 to the limiting state is achieved.

[0073] When the limiting tongue member 5 is not subjected to other external forces, the spring 82 tends to pull the limiting tongue member 5 to pivot upwards until the fasteners 9 abut against the recess 71 and / or the first section 51 of the limiting tongue member 5 abuts against the lower face 32 of the overlap base 3, as shown in Figure 3 and Figure 4 In this case, the limiting tongue member 5 is at rest in the limiting state, with a portion of the second section 52 of the limiting tongue member 5 protruding upwards along the vertical direction Z beyond the first end 41 of the overlap shovel 4. When the limiting tongue member 5, and in particular the top of its second section 52, is subjected to a downward pressing force, this pressing force urges the limiting tongue member 5 to pivot downwards about the pivot axis 81, the second section 52 gradually retracting relative to the first end 41 of the overlap shovel 4, the limiting tongue member 5 being in the passing state when the pressing force causes the limiting tongue member 5 to rest with its second section 52 retracted so as not to protrude beyond the first end 41 of the overlap shovel 4, as shown in Figure 6 Of course, when the pressing force disappears, the spring 82 will bias the limiting tongue member 5 back to the limiting state with its resilient force.

[0074] In an alternative embodiment (not shown), it is also conceivable that the elastic return assembly 8 is configured to cause the limiting tongue member 5 to translate between the limiting state and the pass state. Specifically, it is conceivable that the mounting plate 7 and the limiting tongue member 5 are elastically slidably matched, wherein one of the mounting plate 7 and the first section of the limiting tongue member 5 is provided with a socket member such as a slot or a socket extending in the vertical direction Z, and the other is provided with a plug to be correspondingly inserted into the socket member. Among them, if a socket is provided on the mounting plate 7, an elastic member such as a spring is provided at the bottom of the socket, so that the elastic member tends to push the plug to the top of the socket, thereby causing the limiting tongue member 5 on which the plug is installed to move upward relative to the mounting plate 7 and remain in the limited state; when the top of the second section 52 of the limiting tongue member 5 is subjected to pressing pressure, the limiting tongue member 5 is forced to drive the plug to move downward in the socket until the elastic force of the elastic member offsets the pressing force and the limiting tongue member 5 stays in the pass state; when no longer subjected to pressing pressure, the elastic member pushes the limiting tongue member 5 to move upward with its elastic force and is re-biased in the limited state. If a socket is provided on the first section 51 of the limiting tongue member 5, an elastic member such as a spring is provided on the top of the socket, so that the elastic member tends to push the plug to the bottom end of the socket, and the limiting tongue member 5 still moves upward relative to the mounting plate 7 on which the plug is mounted and remains in the limiting state; when subjected to pressing force, the limiting tongue member 5 moves downward in translation until the pressing force and the elastic force of the elastic member offset each other and remains in the passing state; when no longer subjected to pressing force, the elastic member uses its elastic force to bias the limiting tongue member 5 back into the limiting state.

[0075] The switching of the limiting tongue member 5 between the limiting state and the passing state corresponds to the switching of the overlapping member 2 between the hooking position, the picking position and the driving position. The specific corresponding relationship is described in detail below.

[0076] like Figure 1 As shown, when the overlapping member 2 is in the pickup position, the limiting tongue member 5 is not subjected to external pressure and is biased in the limited position by the elastic return assembly 8. At this time, the freight vehicle equipped with the coupling and uncoupling mechanism 100 approaches the matching overlapping device of the cargo transport equipment along the longitudinal direction X, causing the matching overlapping device to move from the second end 42 of the overlapping shovel 4 to the first end 41, and then be blocked by the limiting tongue member 5 and unable to move further beyond the first end 41 of the overlapping shovel 4.

[0077] The matching overlapping device is picked up onto the overlapping shovel 4 to complete the connection, and then the overlapping component 2 moves vertically upward from the picking position to the position as shown in FIG. Figure 2the latching member 2 is gradually approaching the traction lower base 101 of the traction base 1, the top of the second section 52 of the limiting tongue member 5 will abut against the lower surface 112 of the traction lower base 101, the traction lower base 101 applies a downward pressing force to the limiting tongue member 5, which pushes the limiting tongue member 5 to pivot downward around the pivot 81 until the latching member 2 is Figure 2 In the latching position, the latching shovel 4 of the latching member 2 is adjacent to the upper surface 111 of the traction lower base 101 to form a substantially continuous surface; and the limiting tongue member 5 abuts against the lower surface 112 of the traction lower base 101 of the traction base 1, is shielded by the traction lower base 101, and is in a passing state of not protruding upward in the vertical direction Z from the latching shovel 4. At this time, the freight vehicle on which the latching and unlatching mechanism 100 is installed can continue to move, so that the counterpart latching device of the freight transport equipment enters between the latching shovel 4 and the traction upper base 102 and the traction lower base 101 of the traction base 1, and then the traction peg 130 is lowered to lock the counterpart latching device of the freight transport equipment in the traction base 1.

[0078] After the locking is completed, the latching member 2 can be lowered and rested in one or more driving positions to facilitate the driving of the freight vehicle. At this time, the limiting tongue member 5 is no longer subjected to the downward pressing force due to the movement of the latching member 2 away from the traction lower base 101, and is reset to the limiting state under the action of the elastic reset assembly 8.

[0079] The latching and unlatching mechanism of the utility model uses the limiting tongue member arranged on the latching member and movable between the passing state and the limiting state. When the counterpart latching device of the freight transport equipment needs to be latched, that is, when the latching member is in the latching position or is moving between the latching position and the picking position, the limiting tongue member is always in the limiting state and extends and protrudes from the latching shovel of the latching member to limit the counterpart latching device from moving beyond the latching shovel; when the latching member is in the latching position, the limiting tongue member is abutted by the traction lower base of the traction base and elastically retracts to not protrude from the latching shovel, thereby facilitating the counterpart latching device to pass through the latching shovel and enter the latching base to be locked. This limiting tongue member can limit the counterpart latching device when needed, effectively limits the counterpart latching device without additional control or operation, and solves the problem in the prior art that the counterpart latching device is prone to moving beyond the latching part and entering an incorrect position and cannot be locked by the traction part.

[0080] As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but can include other elements not expressly listed or inherent to such method, article, or apparatus.

[0081] The utility model is not limited to the above-mentioned embodiment, the above-mentioned embodiment is only illustrative and not restrictive. The person skilled in the art can make any possible change and modification under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims. Therefore, any modification, equivalent change and modification made to the above-mentioned embodiment according to the technical essence of the utility model without departing from the content of the technical scheme of the utility model all fall within the protection scope defined by the claims of the utility model.

Claims

1. A hook-and-drop mechanism, comprising a traction base (1) and a bridge member (2), wherein the traction base (1) comprises a traction lower base (101), and the bridge member (2) comprises: Lap base (3); A splicing shovel (4), the splicing shovel (4) being connected to the splicing base (3), It is characterized in that the overlapping component (2) further includes a limiting tongue component (5), The limiting tongue member (5) is mounted on the overlapping member (2), positioned adjacent to the overlapping shovel (4), and can be switched between a limiting state and a passing state relative to the overlapping shovel (4). In the limiting state, a portion of the limiting tongue member (5) protrudes upward from the overlapping shovel (4) in a vertical direction (Z). In the passage state, the limiting tongue member (5) does not protrude upward from the overlapping shovel (4) in the vertical direction, and the limiting tongue member (5) abuts against the lower surface (112) of the traction lower base (101) of the traction base (1).

2. The hook-and-off mechanism according to claim 1, characterized in that: The limiting tongue member (5) includes a first section (51) and a second section (52) extending integrally from the first section (51), wherein the first section (51) is movably connected to the overlapping base (3), and the second section (52) is configured to provide a portion of the limiting tongue member (5) protruding upward in the vertical direction (Z) from the overlapping shovel (4).

3. The hook-and-off mechanism according to claim 2, characterized in that: The overlapping base (3) also includes: a base plate, wherein an opening (6) is formed in the base plate, wherein the opening (6) is positioned adjacent to the lapping shovel (4) along the longitudinal direction (X), and the second section (52) of the limiting tongue member (5) moves through the opening (6); and A mounting plate (7) extending vertically relative to the base plate, wherein the first section (51) of the limiting tongue member (5) is connected to the mounting plate (7) via an elastic reset assembly (8), and wherein the elastic reset assembly (8) biases the limiting tongue member (5) in the limiting state.

4. The hook-and-off mechanism according to claim 3, characterized in that: The elastic reset assembly (8) comprises: a rotating shaft (81) arranged to pivotally connect the mounting plate (7) and the first section (51) of the limiting tongue member (5); and A spring (82), one end of the spring (82) is fixed to the first section (51) of the limiting tongue component (5) by means of a fastener (9) away from the rotating shaft (81), and the other end is fixed to the mounting plate (7).

5. The hook-and-off mechanism according to claim 4, characterized in that: The spring (82) is fixed to the middle position of the mounting plate (7) along the transverse direction (Y), below the opening (6).

6. The hook-and-off mechanism according to claim 4, characterized in that: The mounting plate (7) further comprises a notch (71), wherein the notch (71) is located below the opening (6) and accommodates the fastener (9) when the limiting tongue member (5) is in a limiting state.

7. The hook-and-off mechanism according to claim 3, characterized in that: The elastic reset assembly (8) comprises a plug and a socket extending in a vertical direction (Z), wherein the plug is inserted into the socket for translational movement, wherein an elastic member is arranged in the socket and biases the plug to one end of the socket. The socket is arranged on one of the mounting plate (7) and the first section (51) of the limiting tongue member (5), and the plug is arranged on the other of the mounting plate (7) and the first section (51) of the limiting tongue member (5).

8. The hook-and-off mechanism according to claim 1, characterized in that: The hooking and unhooking mechanism (100) further comprises a displacement member (10) extending in a vertical direction (Z), wherein the displacement member (10) passes through the traction base (1) at its upper portion and is fastened to the bridge member (2) at its lower portion, wherein the displacement member (10) guides the bridge member (2) to move relative to the traction base (1) in the vertical direction (Z) between a hooking position, a picking position and a driving position. In the hooking position, the overlapping member (2) is adjacent to the upper surface (111) of the traction lower base (101), wherein the limiting tongue member (5) is in the passage state; In the picking position, the bridge member (2) is away from the traction lower base (101), wherein the limiting tongue member (5) is in the limiting state; and In the driving position, the overlapping member (2) is located between the hooking position and the picking position, wherein the limiting tongue member (5) is in the limiting state.

9. The hook-and-off mechanism according to claim 3, characterized in that: The mounting plate (7) is arranged below the base plate of the overlapping base (3); the mounting plate (7) and the limiting tongue component (5) are plate-shaped and arranged in parallel.

10. The hook-and-off mechanism according to claim 1, characterized in that: The overlapping shovel (4) has a first end (41) in the longitudinal direction (X) and a second end (42) farther from the traction lower base (101) than the first end (41) in the vertical direction (Z), wherein a cutout (43) is centrally opened at the second end (42), and wherein the limiting tongue member (5) is close to the first end.

Images