CN116985878A - Front frame and fetching door matching structure of milk vehicle - Google Patents

Abstract

A front frame and fetching door matching structure of a milk car belongs to the technical field of commercial facilities. The front frame comprises a front frame left longitudinal beam, a front frame right longitudinal beam and a front end supporting beam of a front frame object-placing grid shelf, the front frame left longitudinal beam and the front frame right longitudinal beam are longitudinally parallel to each other left and right, a space between the front end supporting beams of each two adjacent front frame object-placing grid shelves is formed into an object-taking cavity opening, the object-taking door is arranged between opposite sides of the front frame left longitudinal beam and the front frame right longitudinal beam in the height direction, the object-taking door and the front frame left longitudinal beam and the front frame right longitudinal beam form a sliding pair in a vertical sliding manner, when the object-taking door is pulled upwards by people, the blocking of the object-taking cavity opening is removed by the object-taking door, and when the object-taking door returns downwards, the blocking of the object-taking cavity opening is removed by the object-taking door. The advantages are that: when a customer purchases the packaged milk, the customer only needs to pull the object taking door upwards, the front frame does not need to be opened in a circular arc unfolding state, and the space occupation of a supermarket market channel when the customer opens the door to take the object is eliminated.

Description

Front frame and fetching door matching structure of milk vehicle

Technical Field

The invention belongs to the technical field of commercial facilities, and particularly relates to a front frame and object taking door matching structure of a milk car.

Background

The above-mentioned milk carts are mainly used for turnover tools for selling and/or distributing milk for supermarkets, shops, wines or similar commercial sites, but are mainly equipped directly at, but not limited to, the aforementioned consumer sites to provide convenience for the customers to purchase milk. The front frame of the aforesaid milk cart means the frame that faces outwards, i.e. towards the customer side, in the normal state of exhibiting goods of the milk cart, because the milk cart is composed of four hollowed-out frames of front, back, left and right, see also CN100554059C (milk cart) for details.

As known in the art, when the hinged side (i.e., one side in the height direction, hereinafter the same applies) of the front frame of the milk cart is hinged to the right frame, then the free side (i.e., the other side in the height direction, hereinafter the same applies) of the front frame can be opened and closed (i.e., opened or closed) with respect to the left frame; conversely, when the hinged side of the front frame is hinged to the left frame, then the free side of the front frame may be opened and closed (i.e., opened or closed) relative to the right frame. As is also known in the art, since the width of the passage through which the customer selects and purchases the commodity is very limited in the commodity display area of the supermarket and the market, that is, in order to display more commodities as much as possible, the redundant space in the supermarket and the market is left open, that is, very valuable, so when the customer selects bottled or boxed milk (which may be collectively called "dairy" or "dairy", hereinafter also) on the milk cart, the front frame (for example, the front frame described in the foregoing CN 100554059C) of the milk cart is opened in the present picking mode, but during the opening of the front frame of the milk cart, the whole passage is occupied to interfere with the normal passage of other customers in the picking period, although the picking period is very short, there are adverse interference factors, and even the shopper himself must move the foot along with the front frame adaptively in order to avoid. If the display area channel of the market is properly widened in order to avoid affecting the smooth passage of other customers during the period of milk purchase, this will bring about the problem of increasing the space occupation of the merchandise display area and affecting the number of merchandise that can be displayed. It may be considered that the aforementioned problems are naturally solved if bottled and/or boxed milk is discharged on supermarket shelves. However, since milk, particularly fresh milk, is very critical, harsh to hygiene requirements, sales environments (such as temperature), etc., and there is also an attempt to reduce the number of handling. In addition, bottled or boxed milk, once dropped from the shelf, is extremely prone to damage to the packaging and the environment and resulting in loss of merchandise. Also, if fresh milk that has not been sold on the same day is often required to be carried by the milk vehicle into a particular refrigerated environment to avoid spoilage during reasonable or nominal hold periods.

Disclosure of Invention

The invention aims to provide a front frame and object taking door matching structure of a milk cart, which is beneficial to a customer to take objects smoothly without opening the front frame when purchasing packaged milk, so that the space occupation of a supermarket market channel is eliminated, and the interference influence on the passing of other customers passing through the channel is avoided.

The invention aims to achieve the purpose that the front frame and the fetching door matching structure of the milk car comprises a front frame and a fetching door, wherein the front frame comprises a front frame left longitudinal beam, a front frame right longitudinal beam and front end supporting beams of a front frame object placing grid shelf, the front frame left longitudinal beam and the front frame right longitudinal beam are longitudinally parallel to each other left and right, a group of front end supporting beams of the front frame object placing grid shelf are fixed between opposite sides of the front frame left longitudinal beam and the front frame right longitudinal beam in a spacing state, a space between front end supporting beams of each upper front frame object placing grid shelf and each lower front frame object placing grid shelf is formed into an object taking cavity opening, the fetching door is arranged between opposite sides of the front frame left longitudinal beam and the front frame right longitudinal beam in the height direction, the fetching door vertically slides to form a sliding pair with the front frame left longitudinal beam and the front frame right longitudinal beam, when the fetching door is pulled upwards by people, the blocking of the object taking cavity opening is released, and when the fetching door returns downwards, the object taking cavity opening is released.

In a specific embodiment of the present invention, a front frame rail connecting rail is connected between the front frame left rail and the opposite side of the front frame right rail and at a position corresponding to the front of the front end supporting beam of each front frame storage grille shelf, the space between the front frame rail connecting rail and the front end supporting beam of the front frame storage grille shelf is formed as a lifting rail cavity, and the object taking door forms a sliding pair with the opposite side of the front frame left rail and the front frame right rail at a position corresponding to the lifting rail cavity.

In another specific embodiment of the present invention, a left lift link sliding guide groove is formed at a side of the front frame left side rail toward the front frame right side rail and along a height direction of the front frame left side rail, and a right lift link sliding guide groove is formed at a side of the front frame right side rail toward the side and along a height direction of the front frame right side rail; the left end of the front frame longitudinal beam connecting cross rod is fixed with the front frame left longitudinal beam at a position corresponding to the front of the Zuo Dila rod sliding guide groove, and the right end of the front frame longitudinal beam connecting cross rod is fixed with the front frame right longitudinal beam at a position corresponding to the front of the right lifting rod sliding guide groove; the left end of the front end supporting cross beam of the front frame object placing grid shelf is fixed with the left longitudinal beam of the front frame at a position corresponding to the rear of the Zuo Dila rod sliding guide groove, and the right end is fixed with the right longitudinal beam of the front frame at a position corresponding to the rear of the right lifting rod sliding guide groove; the object taking door and the Zuo Dila rod sliding guide groove and the right lifting pull rod sliding guide groove form a sliding pair.

In yet another specific embodiment of the present invention, the object taking door includes a left lifting rod, a right lifting rod and a set of object taking cavity blocking crossbars, the left lifting rod and the Zuo Dila rod sliding guide groove form a sliding pair sliding up and down, the right lifting rod and the right lifting rod sliding guide groove form a sliding pair sliding up and down, a set of object taking cavity blocking crossbars are connected between the left lifting rod and the right lifting rod at intervals from top to bottom at positions corresponding to the lifting crossbar cavities, and the interval between each upper adjacent object taking cavity blocking crossbars and each lower adjacent object taking cavity blocking crossbars is adapted to the interval between the connecting crossbars of the upper frame longitudinal beam and the lower frame longitudinal beam, and in the set of object taking cavity blocking crossbars, one object taking cavity blocking crossbar located at the top is formed as a handle crossbar, the left end of the handle crossbar is connected with the top of the Zuo Di pull rod, and the right end of the handle crossbar is connected with the top of the right lifting crossbar.

In yet another specific embodiment of the present invention, a left lift bar support post is secured to the lower portion of the Zuo Dila rod slide guide slot, a right lift bar support post is secured to the lower portion of the right lift bar slide guide slot and at a location corresponding to the Zuo Dila rod support post, and the bottom surface of the Zuo Di pull bar is supported on the Zuo Dila rod support post while the right lift phase bottom surface is supported on the right lift bar support post while the set of access cavity blocking rails is in a blocking condition to the access cavity.

In still another specific embodiment of the present invention, in the group of object taking cavity blocking crossbars, a crossbar-resting elastic deformation supporting piece is fixed at a rear side of a middle part of the front frame stringer connecting crossbar located below the handle crossbar in a length direction, and when the group of object taking cavity blocking crossbars releases the blocking state of the object taking cavity, the front frame stringer connecting crossbar located below the handle crossbar is supported on the crossbar-resting elastic deformation supporting piece.

In a further embodiment of the present invention, the cross-sectional shapes of the Zuo Di tie rod and the right lift tie rod are circular, and the cross-sectional shapes of the Zuo Dila rod slide guide groove and the right lift tie rod slide guide groove are semi-circular.

In a further specific embodiment of the present invention, front frame left rail hinges are provided at intervals in the height direction of the front frame left rail and front frame right rail hinges are provided at intervals in the height direction of the front frame right rail and at intervals in the rear side of the front frame right rail.

The technical scheme provided by the invention has the technical effects that: the object taking door which forms a sliding pair with the left longitudinal beam and the right longitudinal beam is arranged between the opposite sides of the left longitudinal beam and the right longitudinal beam of the front frame, so that when a customer purchases the packaged milk, the object taking door is only required to be pulled upwards, the front frame does not need to be opened in a circular arc unfolding state, the space occupation of a supermarket market channel when the door is opened for object taking can be eliminated, and the interference influence on the passing of other customers passing through the channel can be avoided.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is an application illustration of the structure of fig. 1.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is an enlarged view of a portion B of fig. 2.

Fig. 5 is an enlarged view of a portion C of fig. 2.

Fig. 6 is a schematic view of the access door of fig. 1 and 2 in a state in which the handle bars are pulled up to unblock the access cavity opening.

Fig. 7 is a detailed structural view of the pivoting locking mechanism of the right storage grill shelf stationary beam shown in fig. 2.

Fig. 8 is a schematic view of the rear frame front trailing arm locking mechanism shown in fig. 2 in a locked state to the rear frame front trailing arm.

Fig. 9 is a schematic view of the rear frame front trailing arm locking mechanism shown in fig. 2 in an unlocked and deployed state.

Detailed Description

In order to make the technical spirit and advantages of the present invention more clearly understood, the applicant will now make a detailed description by way of example, but the description of the examples is not intended to limit the scope of the invention, and any equivalent transformation made merely in form, not essentially, according to the inventive concept should be regarded as the scope of the technical solution of the present invention.

In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are exemplified by the current position states of fig. 1 and 2, and thus, the present invention is not to be construed as being limited to the technical solutions provided by the present invention.

Referring to fig. 1, a front frame 1 and a door 6 are shown, the front frame 1 includes a front frame left side member 11, a front frame right side member 12 and front frame grille shelf front end support beams 13, the front frame left side member 11 and the front frame right side member 12 are longitudinally parallel to each other, the front frame grille shelf front end support beams 13 are in a group, and are fixed between opposite sides of the front frame left and right side members 11, 12 in a spaced state, a space between the front frame grille shelf front end support beams 13 adjacent to each other is configured as a door opening 131, the door 6 is disposed between opposite sides of the front frame left side member 11 and the front frame right side member 12 in a height direction, the door 6 forms a sliding pair with the front frame left side member 11 and the front frame right side member 12 in a vertically sliding manner, and when the door 6 is pulled up by a person, the door opening 131 is released, and when the door 6 returns downward, the door opening 131 is released.

Referring to fig. 2 in combination with fig. 1, in fig. 2, there are shown a rear frame 2, a left frame 3, a right frame 4 and a bottom frame 5 in addition to the above-mentioned front frame 1, the front frame 1 including a front frame left side member 11 and a front frame right side member 12, front frame left side member hinges 111 (three in this embodiment, but not limited to, three in this embodiment) being provided at intervals from top to bottom in the height direction of the front frame left side member 11, the front frame left side member hinges 111 being hinged to the front side of the left frame front longitudinal arm 31 of the left frame 3, front frame right side member hinges 121 (three in this embodiment) being provided at intervals from top to bottom in the height direction of the front frame right side member 12, the front frame right side member hinges 121 being hinged to the front side of the right frame front longitudinal arm 41 of the right frame 4, the rear side of the rear frame rear trailing arm 21 of the rear frame 2 is hinged to the rear side of the left frame rear trailing arm 32 of the left frame 3 by a set of rear frame rear trailing arm hinges 211 (three in this embodiment) which are arranged at intervals from top to bottom, a left frame trailing arm stopper rod 33 is connected between the front and rear trailing arms 31, 32 of the left frame at intervals from top to bottom, the shape of the left frame 3 is formed in a shape of a Chinese character by the action of the left frame trailing arm stopper rod 33, the shape of the Chinese character is not a shape of the Chinese character in the true sense, but a term which can be used for vividly expressing the structure, for example, a plurality of repeated shape of the Chinese character is also called, or the shape is expressed as a shape in which the upper and lower ends are connected by a crosspiece, and the number of the left frame trailing arm stopper rods 33 which are not particularly limited are arranged at intervals in the middle, the right frames 2 and 4 are the same as each other, and will not be described again. The rear frame front trailing arm 22 of the rear frame 2 is locked or unlocked with the right frame rear trailing arm 42 by the rear frame front trailing arm locking mechanism 7 at a position corresponding to the rear side in the height direction of the right frame rear trailing arm 42 of the right frame 4, a rear frame trailing arm stopper rod 23 is connected between the rear frame front and rear trailing arms 22, 21 at intervals from top to bottom, the rear frame 2 is shaped like a mesh by the rear frame trailing arm stopper rod 23, preferably, a rear frame upper stopper grid plate 24 is fixedly hollowed out at the upper part of the rear frame 2 and between the rear frame front and rear trailing arms 22, 21, the front end of the bottom frame 5 is connected with the opposite side of the lower end of the front frame left side rail 11 and the front frame right side rail 12, the rear end of the bottom frame 5 is configured to be turned up to a vertical state abutting against the rear side of the front frame 1 or turned down to a free end of a horizontal state, a bottom frame left walking wheel 51 is arranged at the left end of a bottom frame cross member 53 of the front end of the bottom frame 5, and a left walking wheel 51 is arranged at the left end of the bottom frame cross member 53 of the bottom frame 5 is arranged at the bottom frame right end of the bottom frame cross member 52 corresponding to the bottom wheel 43 of the front and the bottom frame 4; as shown in fig. 2, 6 and 9, the aforementioned left travelling wheel 51 of the bottom frame is rotatably mounted on the left travelling wheel seat 511 of the bottom frame by a left travelling wheel shaft, the left travelling wheel seat 511 of the bottom frame is fixedly welded to the left end of the bottom frame beam 53, the aforementioned right travelling wheel 52 of the bottom frame is rotatably mounted on the right travelling wheel seat 521 of the bottom frame by a right travelling wheel shaft, the right travelling wheel seat 521 of the bottom frame is fixedly welded to the right end of the bottom frame beam 53, the left side of the left travelling wheel seat 511 of the bottom frame is fixedly welded to the right lower portion of the front frame left side beam 11, the right side of the bottom frame right travelling wheel seat 521 is fixedly welded to the left lower portion of the front frame right side beam 12, the front end of the bottom frame 5, that is, the grid-like region (also called grid-like region), is hinged to the opposite sides of the bottom frame left and right travelling wheel seats 511, 521, respectively, by a pair of the bottom frame hinge pins 55, and the rear end of the bottom frame 5, that is, the grid-like region (also called grid-like region) of the bottom frame 5, is formed to be turned back upward, that is, and the rear end of the bottom frame 5 can be turned back upward; a left shelf fixing beam 35 is pivoted between opposite sides of the left and right longitudinal beams 11, 12 of the left frame 3 and is arranged at intervals from top to bottom along the height direction of the left and right longitudinal beams 11, 12 of the front frame, a left shelf 351 is arranged on the right side of the left shelf fixing beam 35 in the length direction, the left side of the left shelf 351 is fixed on the right side of the left shelf fixing beam 35 in the length direction, the right side of the left shelf 351 in the length direction is configured to be turned upwards and is turned to a free side in a horizontal state until being abutted against the left side of the left frame 3 or turned downwards, and when being turned downwards to a horizontal state, the left shelf 351 is supported on the right side of the front end of the left shelf 35 in the length direction; a right article grille shelf fixing cross member 44 is pivoted between the opposite sides of the right frame front and rear longitudinal arms 41, 42 of the right frame 4 and is spaced from each other along the height direction of the right frame front and rear longitudinal arms 41, 42, the position of the right article grille shelf fixing cross member 44 corresponds to the left article grille shelf fixing cross member 35, a right article grille shelf 441 is provided on the left side in the longitudinal direction corresponding to the right article grille shelf fixing cross member 44, the right side in the longitudinal direction of the right article grille shelf 441 is fixed to the left side of the right article grille shelf fixing cross member 44, the left side in the longitudinal direction of the right article grille shelf 441 is configured to be turned upward and until being turned to the free side in the horizontal state where the right side of the right frame 4 is abutted or turned downward, and when turned downward to the horizontal state, the front end of the right article grille shelf 441 is supported on the right side in the upward direction of the front end support cross member 13 of the front article grille shelf.

As shown in fig. 9, a limiting hook 413 is fixed to the bottom of the right frame front side member 41 of the right frame 4, a limiting hook head 4131 is formed at the end of the limiting hook 413, and a hook head engaging hole 54 is formed in the bottom frame 5 (also referred to as "bottom shelf", the same applies above) at a position corresponding to the limiting hook 413 in return. When the limiting hook head 4131 of the limiting hook 413 is in the state of being hooked with the hook head engagement hole 54, then the right frame front trailing arm 41 of the right frame 4 is in the locked state, that is, the right frame front trailing arm 41 is engaged (coupled) with the front frame right trailing arm 12 as shown in fig. 2, and the right frame 4 cannot be unfolded to the state shown in fig. 9, and vice versa.

Referring to fig. 3 and referring to fig. 1 and 2, a front frame rail connecting rail 14 is connected between the front frame left side rail 11 and the opposite side of the front frame right side rail 12 at a position corresponding to the front of each front frame grille shelf front end support cross member 13, and a space between the front frame rail connecting rail 14 and the front frame grille shelf front end support cross member 13 is configured as a lift rail chamber 141 (indicated in fig. 1 and 3), and the door 6 is configured as a sliding pair with the opposite side of the front frame left side rail 11 and the front frame right side rail 12 at a position corresponding to the lift rail chamber 141.

A left tie rod sliding guide groove 112 is formed at one side of the front frame left side member 11 toward the front frame right side member 12 and along the height direction of the front frame left side member 11, and a right tie rod sliding guide groove 122 is formed at one side of the front frame right side member 12 toward the front frame left side member 11 and along the height direction of the front frame right side member 12; the left end of the front frame rail connecting rail 14 is fixed to the front frame left rail 11 at a position in front of the rail slide guide groove 112 corresponding to Zuo Dila, and the right end is fixed to the front frame right rail 12 at a position in front of the right lift rail slide guide groove 122; the left end of the front end supporting beam 13 of the front frame object-placing grille shelf is fixed with the front frame left longitudinal beam 11 at a position corresponding to the rear of the Zuo Dila rod sliding guide groove 112, and the right end is fixed with the front frame right longitudinal beam 12 at a position corresponding to the rear of the right lifting rod sliding guide groove 122; the door 6 and the pull rod sliding guide groove 112 and the pull rod sliding guide groove 122 of Zuo Di form a sliding pair.

With continued reference to fig. 1 and 2, the access door 6 includes a left lift rod 61, a right lift rod 62 and a set of access cavity blocking rails 63, the left lift rod 61 and the Zuo Di slide guide slot 112 form a sliding pair that slides up and down, the right lift rod 62 and the right lift rod slide guide slot 122 form a sliding pair that slides up and down, a set of access cavity blocking rails 63 are connected between the left and right lift rods 61, 62 at a top-to-bottom interval at a position corresponding to the lift rod cavity 141, and the spacing between each of the upper and lower adjacent access cavity blocking rails 63 is adapted to the spacing between the upper and lower adjacent front frame rail connecting rails 14, more specifically, is substantially equal, and among the set of access cavity blocking rails 63, one access cavity blocking rail 63 at the top is formed as a rail 631, the left end of the handle rail 631 is connected to the top of the Zuo Dila bar 61, and the right end is connected to the top of the right handle rail 62.

As shown in fig. 2, the door 6 is in a non-fetching state, so that the handle rail 631 and the group of access opening blocking rails 63 are in a blocking state for the access opening 131, so as to prevent the articles from falling off from the bottled or boxed milk. Therefore, the fetching door 6 has the effect of double-arrow carving, namely, the fetching door plays a role of a baffle when not being opened upwards (pulled upwards), and can ensure smooth fetching without interference when the fetching door is pulled upwards (the state is shown in fig. 6).

Referring still to fig. 2, a left lift rod supporting column 1121 is fixed to the lower portion of the Zuo Dila rod sliding guide groove 112, a right lift rod supporting column 1221 is fixed to the lower portion of the right lift rod sliding guide groove 122 and at a position corresponding to the Zuo Dila rod supporting column 1121, and the bottom surface of the Zuo Dila rod 61 is supported on the Zuo Dila rod supporting column 1121 while the bottom surface of the right lift rod 62 is supported on the right lift rod supporting column 1221 in a state where the set of access opening blocking crossbars 63 are blocked from the access opening 131.

Referring to fig. 6 and referring to fig. 1 and 2, in the above-mentioned group of access opening blocking rails 63, a rail rest elastic deformation supporting piece 142 is fixed to the middle rear side in the longitudinal direction of the front frame rail connecting rail 14 at the first root (i.e., the second root including the handle rail 631) located below the handle rail 631, and when the above-mentioned group of access opening blocking rails 63 are released from blocking the access opening 131, the front frame rail connecting rail 14 located below the handle rail 631 is supported on the rail rest elastic deformation supporting piece 142 (shown in fig. 6); in this embodiment, the cross-sectional shapes of the Zuo Dila rod 61 and the right bail 62 are circular, and the cross-sectional shapes of the Zuo Di rod slide guide groove 112 and the right bail slide guide groove 122 are semicircular.

The left shelf fixing beam 35 is disposed between the opposite sides of the front and rear longitudinal arms 31 and 32 of the left frame by a left shelf fixing beam pivoting locking mechanism 352; the right shelf fixed beam 44 is disposed between opposite sides of the front and rear longitudinal arms 41 and 42 of the right frame by a right shelf fixed beam pivoting locking mechanism 442, and the structure of the left shelf fixed beam pivoting locking mechanism 352 is the same as that of the right shelf fixed beam pivoting locking mechanism 442.

Referring to fig. 4, 5 and 7, the right frame front trailing arm 41 has a right frame front trailing arm front wall 411 and a right frame front trailing arm rear wall 412, a pair of right frame front trailing arm front wall holes 4111 and a pair of right frame front trailing arm rear wall holes 4121 are respectively formed in the right frame front trailing arm 411 and the right frame front trailing arm rear wall 412 at positions corresponding to each other left and right, and a pair of right frame front trailing arm front wall holes 4111 and a pair of right frame front trailing arm rear wall holes 4121 correspond to the front ends of the right object grille shelf fixing cross member 44, and pivot shaft holes 421 are formed in the right frame rear trailing arm 42 and at positions corresponding to the rear ends of the right object grille shelf fixing cross member 44; the aforementioned right grill shelf fixed beam pivoting locking mechanism 442 includes a front shaft seat 4421, a spring plate 4422, a positioning shaft 4423, a rear shaft seat 4424 and a pivoting shaft 4425, a locking shaft hole 44211 is opened at an upper end of the front shaft seat 4421, a front shaft seat insert limiting block 44212 is extended at a rear side of the front shaft seat 4421 and at a position corresponding to a front end of the aforementioned right grill shelf fixed beam 44, a limiting block insert foot 44213 is extended at a lower portion of a rear side of the front shaft seat insert limiting block 44212, a front end of the spring plate 4422 is fixed with the limiting block insert foot 44213 at a position corresponding to a bottom of the limiting block insert foot 44213, a rear end of the spring plate 4422 is extended toward a direction away from the limiting block insert foot 44213 and an upwardly arched spring plate limiting shaft flange acting arch 44221 is formed at a middle portion of the spring plate 4422, when the front block insert pin 44213 is inserted into the beam cavity 443 of the right grill shelf fixing beam 44, the front shaft seat insert pin 44212 is inserted and fixed to the cavity mouth of the beam cavity 443, the rear side surface of the front shaft seat 4421 is in contact with the front end surface of the right grill shelf fixing beam 44, the locking shaft hole 44211 is in communication with the beam cavity 443, and the left end of the spring plate 4422 is inserted into the beam cavity 443 along with the defining block insert pin 44213 and the middle and right ends of the spring plate 4422 are inserted into the beam cavity 443, a locking elbow 44231 is formed by folding and unfolding the front end of the positioning shaft 4423, a positioning shaft locking flange 44232 is fixed to the rear end of the positioning shaft 4423 and at a position corresponding to the spring plate 4422, the positioning shaft locking flange 44232 is in contact with or release from the spring plate 4422, the lock elbow 44231 is inserted into the upper one of the pair of right frame front trailing arm front wall holes 4111, 4111 and the upper one of the pair of right frame front trailing arm rear wall holes 4121, and the positioning shaft 4423 is inserted into the lower one of the pair of right frame front trailing arm front wall holes 4111, 4121 and the lower one of the pair of right frame front trailing arm rear wall holes 4121, 44211 and extends into the cross member cavity 443, and the front end of the right shaft seat 4424 is inserted into the rear end of the cross member cavity 443 of the right object grille shelf fixing cross member 44, and the pivot shaft 4425 extends at the rear end of the right shaft seat 442 and is pivotally engaged with the pivot shaft hole 421.

Referring to fig. 8 and in combination with fig. 2, a lock shaft setting hole 422 and a rear limiting shaft sliding hole 423 are provided in the right frame rear trailing arm 42 and in a position corresponding to the rear frame front trailing arm locking mechanism 7, and a rear frame front trailing arm limiting tongue 221 is fixed to the rear frame front trailing arm 22 and in a position corresponding to the right side lower side of the rear limiting shaft sliding hole 423, and the upper side of the rear frame front trailing arm limiting tongue 221 is locked or unlocked by the rear frame front trailing arm locking mechanism 7 in a position corresponding to the lock shaft setting hole 422.

Referring to fig. 8 with emphasis, the front trailing arm locking mechanism 7 of the aforementioned rear frame includes a tongue plate locking shaft 71 and a tongue plate inserting pocket 72, the tongue plate locking shaft 71 includes a knob 711, a front limiting shaft 712, a journal 713 and a rear limiting shaft 714, the knob 711 is formed at the front end of the front limiting shaft 712, the front limiting shaft step face 7121 of the front limiting shaft 712 is in contact with or out of contact with the right frame rear trailing arm first side face 424 of the aforementioned right frame rear trailing arm 42, the journal 713 is formed between the front and rear limiting shafts 712, 714, and the diameter of the journal 713 is smaller than the shaft diameters of the front limiting shaft 712 and the rear limiting shaft 714, and the diameters of the front and rear limiting shafts 714, 714 are the same, wherein the journal 713 is in sliding fit with the aforementioned locking shaft setting hole 422, the rear limiting shaft 714 is in sliding fit with the rear limiting shaft sliding hole 423, the rear limiting shaft step face 7141 of the rear limiting shaft 714 is in contact with or out of contact with the right frame rear trailing arm second side face 425 of the aforementioned right frame rear limiting arm 42, the tongue plate inserting pocket 72 is inserted into the aforementioned tongue plate 72 at the front and rear limiting shaft 221 or rear limiting shaft 221 and is fixed to the front and rear tongue plate 72.

The bottom of the tongue plate pocket 72 mentioned above may or may not be closed, and if not, may be referred to as a tongue plate insert, the latter of which is selected in this embodiment.

Referring to fig. 9 and in combination with fig. 8, in the state shown in fig. 8, the upper portion of the tongue plate 221 is defined corresponding to the front trailing arm of the rear frame due to the rearward displacement of the rear defining shaft 714, and the front defining shaft stepped surface 7121 at this time is abutted against the aforementioned right frame rear trailing arm first side 424, and the entire rear frame 2 cannot be lifted up by a required distance due to the regulation of the rear defining shaft 714 to which the rear frame front trailing arm defining tongue plate 221 is subjected, that is, the rear frame front trailing arm defining tongue plate 221 cannot be lifted up from the unlocking tongue plate inserting pocket 72, and the hinge pin 2111 as a structural system of the rear frame rear trailing arm hinge 211 cannot be moved up accordingly. In this state, the above-described limiting hook head 4131 is hooked into the hook head engaging hole 54, and thus the present invention can only assume the enclosed state shown in fig. 2 and 6. Conversely, when the knob 711 is pulled to move the front limiting shaft 712, the journal 713 and the catch limiting shaft 714 integrally formed with each other, and the rear limiting shaft 714 slides forward in the rear sliding shaft sliding hole 423 until the rear limiting shaft stepped surface 7141 comes into contact with the right frame rear trailing arm second side surface 425, in which state the rear limiting shaft 714 is retracted away from the rear frame front trailing arm limiting tongue 221, i.e., the lock on the rear frame front trailing arm limiting tongue 221 is released, in which state the rear frame 2 can be lifted up until the rear frame front trailing arm limiting tongue 221 is caused to ascend and withdraw (retract) the tongue plate pocket 72, at which time the rear frame 2 and the left frame 3 can be brought into a state shown by the wing-spreading effect, while in a state in which the limiting hook head 4131 of the limiting hook 413 is withdrawn from the hook head engaging hole 54, the right frame 4 is also unfolded like the left frame 3, in which state shown in fig. 9, since the left shelf plate and the left shelf plate 351 are pivoted by the left shelf plate fixing cross member pivoting locking mechanism and the right shelf plate fixing cross member 441 are pivoted to the state shown in fig. 9, respectively. In the process of turning the left and right storage grill shelves 351, 441 from the horizontal state shown in fig. 2 and 6 to the vertical state shown in fig. 9, the positioning shaft locking flange 44232 is required to overcome the reaction force of the spring plate limiting shaft flange acting arc 44221 by the artificial force applied to the left and right storage grill shelves 351, 441, and vice versa. Therefore, the milk carts with the corresponding structure can be spliced, and the collection and transportation in the logistics link are convenient, namely the occupation of space in the storage state is reduced.

When a customer shops, the invention is arranged on the left and right object placing grid shelves 351 and 441 in the state shown in fig. 2 when the packaged milk bottles and/or milk boxes are placed. When a customer takes and purchases milk, the handle cross bar 631 is held and lifted upwards until the space between the upper and lower adjacent object taking cavity opening blocking cross bars 63 corresponds to the object taking cavity opening 131 and is in the state shown in fig. 5. During upward lifting of the handle rail 631, a access opening blocking rail 63 located below the handle rail 631 will pass over and rest on the rail rest resilient deformation support sheet 142 (in the state shown in fig. 6) while overcoming the resistance of the rail rest resilient deformation support sheet 142, and vice versa, in the state shown in fig. 2, which will not be repeated.

In summary, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the task of the invention, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims (8)

1. Front frame and the thing door cooperation structure of getting of milk car, its characterized in that: the device comprises a front frame (1) and an object taking door (6), wherein the front frame (1) comprises a front frame left longitudinal beam (11), a front frame right longitudinal beam (12) and a front frame object placing grid shelf front end supporting cross beam (13), the front frame left longitudinal beam (11) and the front frame right longitudinal beam (12) are longitudinally parallel to each other left and right, a group of front frame object placing grid shelf front end supporting cross beams (13) are fixed between opposite sides of the front frame left longitudinal beam and the front frame right longitudinal beam (11, 12) in a spaced state, a space between each two adjacent front frame object placing grid front end supporting cross beams (13) is formed into an object taking cavity opening (131), the object taking door (6) is arranged between the opposite sides of the front frame left longitudinal beam (11) and the front frame right longitudinal beam (12), the object taking door (6) is slidingly combined with the front frame left longitudinal beam (11) and the front frame right longitudinal beam (12) in a left-right longitudinal direction, when the object taking door (6) is pulled upwards, the object taking door is released from blocking the object taking cavity opening (131) when the object taking door is released from the object taking cavity opening (131).

2. The milk cart front frame and access door mating structure of claim 1, wherein: a front frame longitudinal beam connecting cross beam (14) is connected between the front frame left longitudinal beam (11) and the opposite side of the front frame right longitudinal beam (12) and at the position corresponding to the front of the front end supporting cross beam (13) of each front frame object placing grid shelf, a space between the front frame longitudinal beam connecting cross beam (14) and the front end supporting cross beam (13) of the front frame object placing grid shelf is formed into a lifting cross beam cavity (141), and the object taking door (6) and the opposite side of the front frame left longitudinal beam (11) and the front frame right longitudinal beam (12) form a sliding pair at the position corresponding to the lifting cross beam cavity (141).

3. The milk cart front frame and access door mating structure of claim 2, wherein: a left lift rod sliding guide groove (112) is formed on one side of the front frame left longitudinal beam (11) facing the front frame right longitudinal beam (12) and along the height direction of the front frame left longitudinal beam (11), and a right lift rod sliding guide groove (122) is formed on one side of the front frame right longitudinal beam (12) facing the front frame right longitudinal beam (12) and along the height direction of the front frame right longitudinal beam; the left end of the front frame longitudinal beam connecting cross bar (14) is fixed with the front frame left longitudinal beam (11) at a position corresponding to the front of the Zuo Dila rod sliding guide groove (112), and the right end is fixed with the front frame right longitudinal beam (12) at a position corresponding to the front of the right lifting rod sliding guide groove (122); the left end of the front end supporting cross beam (13) of the front frame storage grille shelf is fixed with the front frame left longitudinal beam (11) at a position corresponding to the rear of the Zuo Dila rod sliding guide groove (112), and the right end is fixed with the front frame right longitudinal beam (12) at a position corresponding to the rear of the right lifting rod sliding guide groove (122); the object taking door (6) and the Zuo Dila rod sliding guide groove (112) and the right lifting rod sliding guide groove (122) form a sliding pair.

4. A front frame and access door mating structure of a milk cart as claimed in claim 3, wherein: the object taking door (6) comprises a left lifting rod (61), a right lifting rod (62) and a group of object taking cavity opening blocking cross bars (63), wherein the left lifting rod (61) and the Zuo Dila rod sliding guide groove (112) form a sliding pair which slides up and down, the right lifting rod (62) and the right lifting rod sliding guide groove (122) form a sliding pair which slides up and down, the group of object taking cavity opening blocking cross bars (63) are connected between the left lifting rod (61) and the right lifting rod (62) at intervals from top to bottom at positions corresponding to the lifting rod cavity (141), the interval between each two adjacent object taking cavity opening blocking cross bars (63) is matched with the interval between the two adjacent front frame longitudinal beam connecting cross bars (14), and in the group of object taking cavity opening blocking cross bars (63), one object taking cavity opening blocking cross bar (63) positioned at the top is formed into a lifting handle cross bar (631), the left end of the lifting handle cross bar (631) is connected with the top of the Zuo Dila rod (61) and the top of the right end of the lifting rod (62) is connected with the top of the right end of the lifting rod (62).

5. The milk cart front frame and access door mating structure of claim 4, wherein: a left lifting rod supporting column (1121) is fixed at the lower part of the Zuo Dila rod sliding guide groove (112), a right lifting rod supporting column (1221) is fixed at the lower part of the right lifting rod sliding guide groove (122) and at a position corresponding to the Zuo Dila rod supporting column (1121), the bottom surface of the Zuo Dila rod (61) is supported on the Zuo Dila rod supporting column (1121) under the state that the group of object taking cavity opening blocking cross bars (63) are blocked to the object taking cavity opening (131), and meanwhile, the bottom surface of the right lifting rod (62) is supported on the right lifting rod supporting column (1221).

6. The milk cart front frame and access door mating structure of claim 4, wherein: in the group of object taking cavity opening blocking crossbars (63), a cross bar placing elastic deformation supporting sheet (142) is fixed on the rear side of the middle part of the front frame longitudinal beam connecting crossbars (14) positioned below the handle crossbars (631), and when the group of object taking cavity opening blocking crossbars (63) release the blocking state of the object taking cavity opening (131), the front frame longitudinal beam connecting crossbars (14) positioned below the handle crossbars (631) are supported on the cross bar placing elastic deformation supporting sheet (142).

7. The milk cart front frame and access door mating structure of claim 4 or 5, wherein: the cross sections of the Zuo Dila rod (61) and the right lifting rod (62) are round, and the cross sections of the Zuo Dila rod sliding guide groove (112) and the right lifting rod sliding guide groove (122) are semicircular.

8. A front frame and access door mating structure of a milk cart according to claim 1, 2 or 3, wherein: front frame left side rail hinges (111) are provided at intervals in the height direction of the front frame left side rail (11) on the rear side of the front frame left side rail (11), and front frame right side rail hinges (121) are provided at intervals in the height direction of the front frame right side rail (12) on the rear side of the front frame right side rail (12).