A pallet box

Abstract

The present invention discloses a pallet box, which includes a side wall and a discharge port seat. The side wall includes a side wall cover plate, and an installation opening is formed at the bottom of the side wall cover plate. The discharge port seat is pivotally connected to the bottom of the side wall so that the discharge port seat can be switched between an assembled state where it is installed in the installation opening and a folded state where it is flipped to abut against the side wall cover plate. Among them, when the discharge port seat is in the assembled state, the discharge port seat penetrates through the installation opening and protrudes towards the inside of the pallet box, and when the discharge port seat is in the folded state, the discharge port seat protrudes towards the outside of the pallet box. According to the pallet box of the present invention, when in the assembled state, the discharge port seat protrudes towards the inside of the pallet box, which can simultaneously accommodate both a long liquid bag discharge pipe and a short liquid bag discharge pipe; when in the folded state, the discharge port seat protrudes towards the outside of the pallet box, which can avoid interference between the end wall of the pallet box and the discharge port seat during folding, enabling the pallet box to be folded smoothly.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and more particularly to a pallet box. Background Art

[0002] Collapsible pallet boxes can be configured with liquid bags to transport liquid goods. The discharging methods of liquid goods are divided into upper discharging and lower discharging. For the liquid bag using the lower discharging method, there is a discharging pipe at the lower part, and there is a discharging port seat at the position of the pallet box corresponding to the discharging pipe. When installing the liquid bag, place the liquid bag inside the box, extend the discharging pipe out of the discharging port seat and fix it on the discharging port seat. When discharging, connect the conveying pipeline to the discharging pipe for discharging. After discharging, disassemble and discard the liquid bag, and fold the pallet box for transportation and recycle.

[0003] Since the discharging pipes of liquid bags vary in various forms and lengths, and the fixing methods with the discharging port seats are also different, there is currently a problem that one type of discharging port seat of the pallet box can only adapt to the discharging pipe of one type of liquid bag.

[0004] Therefore, a pallet box is needed to at least partially solve the above problems. Summary of the Invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a pallet box, comprising:

[0007] Side walls, the side walls include side wall cover plates, and an installation opening is formed at the bottom of the side wall cover plates;

[0008] A discharging port seat, the discharging port seat is pivotally connected to the bottom of the side wall, so that the discharging port seat can be switched between an assembled state of being installed in the installation opening and a folded state of being flipped to abut against the side wall cover plate,

[0009] wherein, when the discharging port seat is in the assembled state, the discharging port seat penetrates through the installation opening and protrudes towards the interior of the pallet box,

[0010] when the discharging port seat is in the folded state, the discharging port seat protrudes towards the exterior of the pallet box.

[0011] According to the pallet box of the present invention, when in the assembled state, the discharge port seat protrudes towards the inside of the pallet box, and can accommodate both a relatively long liquid bag discharge pipe and a relatively short liquid bag discharge pipe; when in the folded state, the discharge port seat protrudes towards the outside of the pallet box, which can avoid interference between the end wall of the pallet box and the discharge port seat during folding, enabling the pallet box to be folded smoothly.

[0012] Further, the discharge port seat includes:

[0013] A discharge port panel, on which a discharge port is provided;

[0014] Discharge port side plates, two of the discharge port side plates are connected from the outside of the discharge port panel to both ends of the discharge port panel along the width direction of the pallet box; and

[0015] A discharge port top plate, which is connected from the outside of the discharge port panel to the top end of the discharge port panel in the assembled state.

[0016] Further,

[0017] At both ends of the discharge port along the width direction, there are provided lugs, the lugs are arranged along the height direction of the pallet box, the lugs are bent from the discharge port panel towards the outside of the pallet box, and at least one end of the two ends of the lugs along the height direction is provided with a lug boss;

[0018] The discharge port panel includes a limit platform, which is located on at least one side of the two sides of the lug along the height direction.

[0019] Further, the discharge port seat includes a bolt, a first fixing hole is provided on the side wall, and the position of the first fixing hole corresponds to the bolt in the assembled state. When the discharge port seat is in the assembled state, the locking end of the bolt rod of the bolt extends into the first fixing hole to prevent the discharge port seat from disengaging from the assembled state.

[0020] Further, a second fixing hole is also provided on the side wall, and the position of the second fixing hole corresponds to the bolt in the folded state. When the discharge port seat is in the folded state, the locking end extends into the second fixing hole to prevent the discharge port seat from disengaging from the folded state.

[0021] Further,

[0022] The bolt further includes a bolt seat, the bolt seat is connected to the bottom of the opposite sides of the two discharge port side plates, a sealing plate is provided on the side of the bolt seat away from the discharge port side plate, and a through hole is provided on the sealing plate;

[0023] The bolt rod includes a head and a tail. The head is used to extend through the first fixing hole or the second fixing hole. The tail extends through the perforation on the sealing plate. The radial dimension of the tail is adapted to the radial dimension of the perforation, and the radial dimension of the head is larger than that of the tail.

[0024] The bolt further includes a spring. The spring is sleeved on the tail of the bolt rod and is located between the sealing plate and the head.

[0025] Further, the tray box further includes a discharge port cover plate. The discharge port cover plate is pivotally connected to the bottom of the side wall to open or close the installation port. And when the discharge port seat is in the assembled state, the discharge port cover plate can cover the discharge port seat.

[0026] Further, the side wall further includes:

[0027] A side wall frame, and the side wall cladding is connected to the inner side of the side wall frame;

[0028] Two discharge port side beams. The two discharge port side beams are arranged on both sides of the installation port along the width direction of the tray box in the height direction of the tray box and are connected to the side wall frame. The discharge port seat is arranged between the two discharge port side beams through a pivot shaft to be pivotable in the vertical direction.

[0029] Further, both the first fixing hole and the second fixing hole are arranged on the discharge port side beam. The first fixing hole is located at the bottom of the discharge port side beam, and the second fixing hole is located above the first fixing hole.

[0030] Further, a hinge shaft is arranged on one of the two discharge port side beams. The hinge shaft is arranged along the height direction. The discharge port cover plate is connected to the discharge port side beam through the hinge shaft to be pivotable in the horizontal direction.

[0031] Further, the discharge port cover plate has a hinge shaft sleeve. The hinge shaft extends through the hinge shaft sleeve. The length dimension of the hinge shaft sleeve is smaller than that of the hinge shaft to enable the discharge port cover plate to be movable in the height direction.

[0032] Further, a hanging plate is arranged at one end of the discharge port cover plate away from the hinge shaft. A cover plate fixing member is arranged on the other of the two discharge port side beams. When the discharge port cover plate is closed, the hanging plate is connected to the cover plate fixing member to prevent the discharge port cover plate from pivoting. A lead seal hole is arranged on the hanging plate.

[0033] Further, a cover plate limiting member is provided at the bottom of the side wall frame. When the discharge port cover plate is opened, the discharge port cover plate can move in the height direction and then pivot to the inner side of the cover plate limiting member. An operation part is provided on the discharge port cover plate to facilitate the operation of the discharge port cover plate.

[0034] Further, the tray box further includes:

[0035] A chassis, to which the side walls are pivotally connected at the ends;

[0036] End walls, which are pivotally connected to the ends of the chassis and adjacent to the side walls. When the tray box is in the folded state, both the end walls and the side walls pivot to be flush with the chassis, and the side walls are located above the end walls.

[0037] Further, the tray box further includes an upper cover, which includes an upper cover frame and an upper cover panel connected to the outside of the upper cover frame. The upper cover frame includes at least two upper cover cross beams. When the tray box is in the folded state, the upper cover is located above the side walls, and the discharge port seat is accommodated in the space enclosed by two adjacent upper cover cross beams and the upper cover panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following drawings of the present invention are used as part of the present invention to understand the present invention. The embodiments of the present invention shown in the drawings and their descriptions are used to explain the principles of the present invention.

[0039] In the drawings:

[0040] Figure 1 is a perspective schematic view of the assembled state of the tray box according to the preferred embodiment of the present invention, wherein the discharge port cover plate covers the discharge port seat;

[0041] Figure 2 is Figure 1 a perspective schematic view of another angle of the tray box in

[0042] Figure 3 is Figure 2 a schematic view of the bottom of the first side wall of the tray box in

[0043] Figure 4 is Figure 3 a schematic view of the discharge port seat in the folded state and the discharge port cover plate not covering the discharge port seat;

[0044] Figure 5Schematic structural diagram of the discharge port seat of the tray box according to a preferred embodiment of the present invention;

[0045] Figure 6 It is Figure 5 An enlarged schematic diagram of part A in;

[0046] Figure 7 It is Figure 5 Schematic diagram of the installation of the discharge port seat and the discharge pipe of the first liquid bag in;

[0047] Figure 8 It is Figure 7 Schematic diagram of the back of the discharge port seat in;

[0048] Figure 9 It is Figure 1 Stereoscopic perspective schematic diagram of the tray box in the folded state;

[0049] Figure 10 It is Figure 9 Schematic diagram of another view of the tray box in the folded state;

[0050] Figure 11 It is Figure 9 Schematic diagram of the cross-section of the tray box in the folded state;

[0051] Figure 12 It is Figure 5 Schematic structural diagram of the installation of the discharge port seat and the discharge pipe of the second liquid bag in;

[0052] Figure 13 It is Figure 12 Schematic diagram of the back of the discharge port seat in;

[0053] Figure 14 It is Figure 5 Schematic structural diagram of the installation of the discharge port seat and the discharge pipe of the third liquid bag in; and

[0054] Figure 15 It is Figure 14 Schematic diagram of the back of the discharge port seat in.

[0055] Explanation of reference numerals:

[0056] 100: Tray box 110: First side wall 102: Second side wall

[0057] 111: Side wall cladding 112: Side wall frame 113: Installation opening

[0058] 114: Side wall bottom beam 115: First fixing hole 116: Second fixing hole

[0059] 117: Half-fold door 118: Side wall column 119: Side wall stacking member

[0060] 120: Chassis 121: Chassis upright column 122: Chassis upper beam

[0061] 123: Discharge port side plate 124: Discharge port top plate 125: Discharge port bottom plate

[0062] 126: Discharge port panel 127: Notch 130: End wall

[0063] 131: End wall cladding 132: End wall frame 133: End wall boss

[0064] 140: Upper cover 141: Upper cover cladding 142: Upper cover frame

[0065] 143: Upper cover cross beam 144: Stacking plate 150: Discharge port seat

[0066] 151: Pivot shaft 152: Pivot shaft sleeve 153: Discharge port

[0067] 155: Latching ear 156: Latching ear boss 157: Limiting platform

[0068] 158: Discharge port side beam 159: Discharge port upper beam 160: Bolt

[0069] 161: Bolt rod 162: Pull ring 163: Pull rope

[0070] 164: Spring 165: Bolt seat 166: Sealing plate

[0071] 167: Head 168: Tail 170: Discharge port cover plate

[0072] 171: Hinge shaft 172: Hinge shaft sleeve 173: Hanging plate

[0073] 174: Sealing hole 175: Operating part 176: Cover plate fixing part

[0074] 177: Cover plate limiting part 180 / 280 / 380: Clamping seat 182 / 282: Limiting edge

[0075] 101 / 201 / 301: Discharge pipe 183 / 283 / 383: Hook 190: Lock

[0076] 181: Elastic clip 103: Valve 104: Discharge pipe hole Detailed implementation method

[0077] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that the present invention may be practiced without one or more of these details. In other instances, well-known features of some technologies are not described to avoid obscuring the present invention.

[0078] For a thorough understanding of the present invention, a detailed description will be presented in the following. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof.

[0080] The ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" does not imply the existence of a "second component" by itself, and the term "second component" does not imply the existence of a "first component" by itself.

[0081] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used herein are for illustrative purposes only and are not restrictive. For example, the "inner side" described below may refer to the side closer to the inside of the tray box in the assembled state, and the "outer side" may refer to the side closer to the outside of the tray box in the assembled state.

[0082] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art.

[0083] Please refer to the following Figure 1 and Figure 2。The pallet box 100 of the present invention includes a chassis 120, two end walls 130, two side walls, and an upper cover 140. Among them, the side walls are pivotally connected to the ends of the chassis 120, and the end walls 130 are pivotally connected to the ends of the chassis 120 and are adjacent to the side walls. That is, the two end walls 130 are disposed opposite each other at both ends of the chassis 120, and the two side walls are disposed opposite each other at the other two ends.

[0084] The two side walls are respectively defined as a first side wall 110 and a second side wall 102. The first side wall 110 and the second side wall 102 are both composed of a side wall frame 112 and a side wall cladding 111. The side wall cladding 111 is connected to the side wall frame 112 from the inside of the side wall. The side wall frame 112 can be composed of side wall columns 118, a side wall bottom beam 114, and a side wall top beam (not shown). The end wall 130 includes an end wall frame 132 and an end wall cladding 131. The end wall cladding 131 is connected to the end wall frame 132 from the inside of the end wall 130. The upper cover 140 includes an upper cover frame 142 and an upper cover cladding 141. The upper cover cladding 141 is connected to the upper cover frame 142 from the outside of the upper cover 140. The upper cover frame 142 includes at least two upper cover cross beams 143.

[0085] Chassis columns 121 are respectively provided at the four corners of the chassis 120. Two vertically elongated holes with side openings (not shown) are provided on each chassis column 121. Thus, each end of the chassis 120 has two vertically elongated holes, and the openings of the two vertically elongated holes at the same end face each other. To facilitate the installation of the end wall 130 or the side wall, the top of at least one of the two elongated holes at each end is open. The bottoms of the end wall 130 and the side walls both have connecting shafts (not shown). The two ends of the connecting shaft respectively extend into the vertically elongated holes on both sides to form a hinge.

[0086] The lock 190 on the end wall 130 has an end wall boss 133, and the top of the side wall column 118 has a side wall stacking member 119. When the pallet box 100 is in the assembled state, the end wall 130 and the side wall are hooked together through the cooperation of the end wall boss 133 and the square hole on the side wall stacking member 119, and then locked through the lock 190 on the end wall 130, thereby connecting the end wall 130 and the side wall together.

[0087] The upper cover 140 covers the top of the pallet box 100, that is, the upper cover 140 is connected to the tops of the two end walls 130 and the two side walls from above the pallet box 100 and is fixed by tying.

[0088] Please refer to the following Figure 1 、 Figure 2 、 Figure 3 and Figure 4。The pallet box 100 of the present invention further includes a discharge port seat 150, which is pivotally connected to the bottom of one of the two side walls so that the discharge port seat 150 can be switched between an assembled state and a folded state. Among them, the side wall where the discharge port seat 150 is installed is the first side wall 110, and the side wall without the discharge port seat 150 is the second side wall 102.

[0089] The bottom of the side wall cover plate 111 has an installation opening 113. When the discharge port seat 150 is in the assembled state, the discharge port seat 150 is located at the installation opening 113. Specifically, the discharge port seat 150 penetrates through the installation opening 113 and protrudes towards the interior of the pallet box 100.

[0090] When the discharge port seat 150 is in the folded state, the discharge port seat 150 is flipped to abut against the side wall cover plate 111, and the discharge port seat 150 protrudes towards the exterior of the pallet box 100.

[0091] According to the pallet box 100 of the present invention, when in the assembled state, the discharge port seat 150 protrudes towards the interior of the pallet box 100, which can accommodate both a long liquid bag discharge pipe 101 and a short liquid bag discharge pipe 101; when in the folded state, the discharge port seat 150 protrudes towards the exterior of the pallet box 100, which can avoid interference between the end wall 130 of the pallet box 100 and the discharge port seat 150 during folding, enabling the pallet box 100 to be folded smoothly.

[0092] Preferably, a half-fold door 117 ( Figure 1 as shown in the figure) is provided on the side wall to facilitate the installation of the liquid bag. In the illustrated embodiment, the half-fold door 117 is provided on the first side wall 110. The difference between the first side wall 110 and the second side wall 102 is that, in order to facilitate the installation of the discharge port seat 150, the side wall frame 112 of the first side wall 110 further includes two discharge port side beams 158 and a discharge port upper beam 159 connected between the two discharge port side beams 158. The two discharge port side beams 158 are arranged on both sides of the installation opening 113, and the discharge port upper beam 159 is located above the discharge port 153. In the illustrated embodiment, the discharge port side beams 158 are arranged between the side wall top beam and the side wall bottom beam 114 in the height direction of the pallet box 100, and the discharge port upper beam 159 is arranged in the width direction of the pallet box 100. A pivot shaft 151 is connected between the two discharge port side beams 158, and the top of the discharge port seat 150 has a pivot shaft sleeve 152. The number of pivot shaft sleeves 152 is preferably two, and the two pivot shaft sleeves 152 are respectively arranged close to one discharge port side beam 158. The pivot shaft sleeve 152 is sleeved on the pivot shaft 151 to enable the discharge port seat 150 to be pivotable in the vertical direction.

[0093] Please refer to the following Figure 9 、 Figure 10 and Figure 11When the tray box 100 needs to be folded, the end walls 130 and the side walls can be laid down and pivoted to be flush with the chassis 120. The specific folding sequence is as described below. First, directly lay down and fold the two end walls 130 without order. Second, lift up and fold the second side wall 102. Third, lift up and fold the first side wall 110. Finally, cover the upper cover 140 on the top layer, and the stacking plate 144 of the upper cover 140 is placed on the stacking surface at the top of the chassis column 121.

[0094] That is, in the folded state, the end wall 130 is located above the chassis 120, the second side wall 102 is located above the end wall 130, the first side wall 110 is located above the second side wall 102, and the upper cover 140 is located above the first side wall 110. This folding sequence avoids the situation where the end wall 130 is lifted by the discharge port seat 150 when the side walls are folded first.

[0095] Thus, a receiving space is formed below the upper cover panel 141, and the discharge port seat 150 is received in the space surrounded by the upper cover panel 141 and the two adjacent upper cover cross beams 143. Using the space of the upper cover 140 to store the discharge port seat 150 makes the height of the tray box 100 not increase when folded.

[0096] The following will be combined with Figure 5 The discharge port seat 150 of the present invention will be described in detail. The specific structure of the discharge port seat 150 includes a discharge port panel 126, two discharge port side plates 123, a discharge port top plate 124, and optionally a discharge port bottom plate 125. A discharge port 153 is provided on the discharge port panel 126, and the discharge port side plates 123, the discharge port top plate 124, and the discharge port bottom plate 125 are all connected to the discharge port panel 126 from the outside of the discharge port seat 150 in the assembled state. Among them, the two discharge port side plates 123 are connected to both ends of the discharge port panel 126 along the width direction of the tray box 100; the discharge port top plate 124 is connected to the top end of the discharge port panel 126, and the discharge port bottom plate 125 is connected to the bottom end of the discharge port panel 126.

[0097] Thus, the discharge port seat 150 is generally constructed in a box shape with an open mouth. When the discharge port seat 150 is in the assembled state, the discharge port panel 126 is located inside the side wall frame 112, its open mouth faces outward, and the ends of the discharge port side plates 123, the discharge port top plate 124, and the discharge port bottom plate 125 do not extend beyond the outer surface of the side wall frame 112; when the discharge port seat 150 is in the folded state, its open mouth faces the side wall cover plate 111, and the ends of the discharge port side plates 123, the discharge port top plate 124, and the discharge port bottom plate 125 can abut against the side wall cover plate 111.

[0098] The discharging port seat 150 is generally box-shaped and has a certain depth (the width of the discharging port side plate 123), enabling the discharging port seat to accommodate discharging pipes of various specifications of liquid bags. For a relatively short discharging pipe, as long as its length is greater than the thickness of the discharging port panel 126. When a relatively long discharging pipe is used, as long as its length does not exceed the width of the discharging port side plate 123; that is, as long as the relatively long discharging pipe does not protrude from the outer surface of the first side wall 110, or rather, the length of the relatively long discharging pipe is not greater than the thickness of the first side wall 110 (the thickness of the first side wall 110 referred to here includes the depth of the discharging port seat 150).

[0099] Preferably, a notch 127 is preferably formed on one side of the discharging port side plate 123 close to the pivot shaft 151. The size of the notch 127 is adapted to the size of the discharging port upper beam 159, and when the discharging port seat 150 is in the folded state, the discharging port upper beam 159 can enter the notch 127. Thus, it can be avoided that the discharging port upper beam 159 affects the flat placement of the discharging port seat 150.

[0100] Continue to refer to Figure 5 , two lugs 155 are provided on the discharging port seat 150. The two lugs 155 are respectively located at both ends of the discharging port 153 along the width direction and are bent outward from the discharging port panel 126 towards the outside of the pallet box 100. The lugs 155 are arranged along the height direction of the pallet box 100, and at least one end of the two ends of the lugs 155 along the height direction is provided with a lug boss 156. Exemplarily, only the upper end is provided with the lug boss 156. Preferably, both ends are provided with the lug bosses 156. At least one side of the discharging port panel 126 on both sides of the lugs 155 along the height direction is configured as a limiting platform 157. For example, only the upper side is configured as the limiting platform 157. Preferably, both sides are configured as the limiting platforms 157. In the illustrated embodiment, the limiting platform 157 is spaced apart from the lugs 155.

[0101] Please refer to the following Figure 3 、 Figure 4 、 Figure 5 . A pin 160 is provided at the bottom of the discharging port seat 150. Preferably, two pins 160 are provided at the bottom of the discharging port seat 150 to improve the locking ability. The pin 160 can cooperate with the first fixing hole 115 provided on the first side wall 110 to maintain the discharging port seat 150 in the assembled state; or cooperate with the second fixing hole 116 provided on the first side wall 110 to maintain the discharging port seat 150 in the folded state.

[0102] That is, the position of the first fixing hole 115 corresponds to the latch rod 161 of the latch 160 in the assembled state. When the discharge port seat 150 is in the assembled state, the locking end of the latch rod 161 of the latch 160 extends into the first fixing hole 115 to prevent the discharge port seat 150 from disengaging from the assembled state; the position of the second fixing hole 116 corresponds to the latch rod 161 of the latch 160 in the folded state. When the discharge port seat 150 is in the folded state, the locking end of the latch rod 161 extends into the second fixing hole 116 to prevent the discharge port seat 150 from disengaging from the folded state.

[0103] For the specific structure of the latch 160, please refer to Figure 5 and Figure 6 . The latch 160 preferably consists of a latch seat 165, a latch rod 161, a spring 164 and a sealing plate 166, that is, the latch 160 is preferably configured as a compression spring type latch. Among them, the latch seat 165 is arranged at the bottom of the discharge port side plate 123 and is located inside the discharge port seat 150. In the illustrated embodiment, two latch seats 165 are respectively arranged at the bottoms of the opposite sides of the two discharge port side plates 123. The sealing plate 166 is arranged on the side of the latch seat 165 away from the discharge port side plate 123, and has a through hole (not shown) for the free end of the latch rod 161 to pass through.

[0104] Specifically, both the first fixing hole 115 and the second fixing hole 116 are arranged on the discharge port side beam 158. The first fixing hole 115 is located at the bottom of the discharge port side beam 158, the second fixing hole 116 is located above the first fixing hole 115, and the second fixing hole 116 is also located above the pivot shaft 151.

[0105] The latch rod 161 includes a head 167 and a tail 168. Among them, the head 167 is used to extend through the first fixing hole 115 or the second fixing hole 116, and the tail 168 is used to extend through the through hole on the sealing plate 166. The radial dimension of the tail 168 is adapted to the radial dimension of the through hole to pass through the through hole. The radial dimension of the head 167 is larger than that of the tail 168. Thus, when the latch rod 161 is pulled in the direction of the free end, when the latch rod 161 is in the unlocked position, the head 167 of the latch rod 161 cannot pass through the through hole, so that the latch rod 161 cannot disengage from the latch seat 165.

[0106] The spring 164 is sleeved on the tail 168 of the latch rod 161 and is located between the sealing plate 166 and the head 167. Thus, when the latch rod 161 is pulled in the direction of the free end, the spring 164 can exert an opposite acting force on the latch rod 161, so that the latch rod 161 has a tendency to return to the locked position. Such a setting enables the latch rod 161 to automatically return to the locked position from the unlocked position when the latch rod 161 is released.

[0107] In addition, in order to prevent the free end of the latch rod 161 from detaching from the latch seat 165 and to facilitate operation, a pull ring 162 is provided at the free end of the latch rod 161. Preferably, a pull cord 163 is connected between the two pull rings 162 to facilitate the simultaneous operation of the two latches 160.

[0108] Please refer to the following Figure 3 and Figure 4 . In order to block the discharge port 153 during transportation or storage, the pallet box 100 is further provided with a discharge port cover plate 170. The discharge port cover plate 170 is pivotally connected to the bottom of the first side wall 110 to open or close the mounting port 113, and when the discharge port seat 150 is in the assembled state, the discharge port cover plate 170 can cover the discharge port seat 150. The shape of the discharge port cover plate 170 is configured to be adapted to the shape of the discharge port seat 150, and can be configured as a rectangle, for example.

[0109] Among them, a hinge shaft 171 is provided on one of the two discharge port side beams 158 along the height direction of the pallet box 100. An end of the discharge port cover plate 170 has a hinge bushing 172, and the hinge shaft 171 extends through the hinge bushing 172 so that the discharge port cover plate 170 is connected to the discharge port side beam 158 through the hinge shaft 171, thereby realizing the pivotal movement of the discharge port cover plate 170 in the horizontal direction.

[0110] Preferably, the length dimension of the hinge shaft 171 is greater than the length dimension of the hinge bushing 172. Such a setting can lift the discharge port cover plate 170 in the height direction of the pallet box 100 to realize the movement of the discharge port cover plate 170 in the height direction of the pallet box 100.

[0111] A hanging plate 173 is provided at an end of the discharge port cover plate 170 away from the hinge shaft 171, and a cover plate fixing member 176 is provided on one of the two discharge port side beams 158 where the hinge shaft 171 is not provided, and the position of the cover plate fixing member 176 corresponds to the position of the hanging plate 173.

[0112] When closing the discharge port cover plate 170, it can be lifted upward so that the hanging plate 173 is hooked into the cover plate fixing member 176 to maintain the discharge port cover plate 170 in the closed state. Preferably, a lead seal hole 174 is provided on the hanging plate 173 to facilitate the lead sealing operation.

[0113] The bottom of the side wall frame 112 is provided with a cover plate stopper 177, which can interfere with the cover plate stopper 177 when the discharge port cover plate 170 pivots. In addition, the height to which the discharge port cover plate 170 can be lifted is greater than the height dimension of the cover plate stopper 177. Thus, the discharge port cover plate 170 can be moved in the height direction and then pivoted to the inner side of the cover plate stopper 177, and the discharge port cover plate 170 falls back under the action of gravity. At this time, if the discharge port cover plate 170 has a tendency to be out of the open state, the cover plate stopper 177 can interfere with it and prevent the discharge port cover plate 170 from continuing to pivot. In an embodiment not shown, the cover plate stopper 177 can also be provided on the chassis upper beam 122.

[0114] In order to facilitate the operation of the discharge port cover plate 170, an operating portion 175 is provided thereon. Preferably, the operating portion 175 is configured as a hand hole.

[0115] The operation method of opening the discharge port cover plate 170 is as follows: insert your finger into the hand hole, lift the discharge port cover plate 170 to separate the hanging plate 173 from the cover plate fixing member 176, and rotate the discharge port cover plate 170 horizontally to open it, so that the discharge port cover plate 170 is close to the side wall, and the discharge port cover plate 170 falls on the inner side of the cover plate stopper 177 by its own weight. The operation process of closing the discharge port cover plate 170 is the opposite of the above content. After the hanging plate 173 is inserted into the cover plate fixing member 176, a lead seal is passed through the lead seal hole 174 on the hanging plate 173 and the cover plate fixing member 176 to seal the discharge port cover plate 170.

[0116] The pallet box 100 of the present invention can adapt to the discharge pipes of various liquid bags. For example, in the first preferred embodiment of the present invention, please refer to Figure 7 and Figure 8 , the holder 180 and the discharge pipe 101 are separate components. The discharge pipe 101 of the liquid bag in this embodiment needs to be connected to the holder 180 first, and then the holder 180 is connected to the discharge port seat 150 from the inner side of the pallet box 100. Among them, the holder 180 is constructed as a U-shaped structure with an opening, and a pair of elastic clips 181 are provided on both sides of the opening, and a snap ring groove (not shown) is provided on the discharge pipe 101. When connecting the discharge pipe 101 to the holder 180, it is only necessary to snap the holder 180 into the snap ring groove of the discharge pipe 101, and the elastic clip 181 snaps the snap surface at the corresponding position of the snap ring groove, so that the discharge pipe 101 and the holder 180 can be fixed. In this embodiment, a valve 103 can be provided in the discharge pipe 101. When unloading is required, the discharge port cover 170 is first opened, and then the discharge pipe 101 is connected to the conveying pipe, and the valve 103 is opened to carry out the discharge operation, and the liquid material in the liquid bag can enter the conveying pipe through the discharge pipe hole 104.

[0117] The card seat 180 is provided with two limiting edges 182, and the two limiting edges 182 are located on both sides of the U-shaped opening. A hook 183 is provided in the middle of the limiting edge 182. When the card seat 180 is connected to the discharge port seat 150, the limiting edge 182 is stuck between two limiting platforms 157 of the discharge port seat 150 along the height direction of the pallet box 100, so as to prevent the card seat 180 from moving in the height direction of the pallet box 100. In the illustrated embodiment, the two limiting edges 182 on the card seat 180 are respectively located on both sides of the discharge port 153 along the width direction of the pallet box 100, that is, the limiting edge 182 is adjacent to the lug 155. Thus, the limiting edge 182 and the lug 155 cooperate to prevent the card seat 180 from moving in the width direction of the pallet box 100.

[0118] The hook 183 is connected to the lug 155, and the two form a snap connection to prevent the card seat 180 from retracting into the box. Preferably, the hook 183 is located between two lug bosses 156, further preventing the card seat 180 from moving in the height direction of the pallet box 100. Thus, the card seat 180 cooperates with the discharge port seat 150, so that the discharge pipe 101 of the liquid bag is firmly installed and can be unloaded safely. In the present embodiment, the discharge pipe 101 of the liquid bag can have a shorter specification.

[0119] Figure 12 and Figure 13 Exemplarily, the pallet box 100 of the present invention is shown in cooperation with the discharge pipe 201 of the second specification, that is, the second preferred embodiment. Among them, the card seat 280 and the discharge pipe 201 are an integral member, and it can be directly connected to the discharge port seat during use. Among them, limiting edges 282 are respectively provided on both sides of the discharge pipe 201, and a hook 283 is provided in the middle of the limiting edge 282. When the discharge pipe 201 and the card seat 280 are connected to the discharge port seat 150, the limiting edge 282 is stuck between two limiting platforms 157 of the discharge port seat 150 along the height direction of the pallet box 100, so as to prevent the card seat 280 from moving in the height direction of the pallet box 100. In the present embodiment, a valve may not be provided in the discharge pipe 201.

[0120] In the illustrated embodiment, the two limiting edges 282 on the card seat 280 are respectively located on both sides of the discharge port 153 along the width direction of the pallet box 100, that is, the limiting edge 282 is adjacent to the lug 155. Thus, the limiting edge 282 and the lug 155 cooperate to prevent the card seat 280 from moving in the width direction of the pallet box 100.

[0121] The hook 283 is connected to the lug 155, and the two form a snap connection to prevent the card seat 280 and the discharge pipe 201 from retracting into the box. Preferably, the hook 283 is located between the two lug bosses 156, further preventing the card seat 280 from moving in the height direction of the tray box 100. Thus, the card seat 280 on the discharge pipe 201 cooperates with the discharge port seat 150, making the discharge pipe 201 of the liquid bag firmly installed and enabling safe discharging. In this embodiment, the discharge pipe 201 of the liquid bag can have a longer specification.

[0122] Figure 14 and Figure 15 Exemplarily, the tray box 100 of the present invention is shown in cooperation with the discharge pipe 301 of the third specification, that is, the third preferred embodiment. Among them, the card seat 380 and the discharge pipe 301 are an integral member. The difference in the structure of the card seat 380 from that in the second preferred embodiment is that the card seat 380 is not provided with a limiting edge and only has two hooks 383. When the discharge pipe 301 is installed on the discharge port seat 150, the hooks 383 form a snap connection with the lugs 155, and the hooks 383 are located between the two lug bosses 156 on the lugs 155. Preferably, the lug bosses 156 and the hooks 383 are in mutual abutment. Thus, by using the hooks 383, the lugs 155 and the lug bosses 156, the movement of the discharge pipe 301 in the height direction and the width direction of the tray box 100 is simultaneously blocked, and the discharge pipe 301 is prevented from retracting into the box. In this embodiment, the discharge pipe 301 of the liquid bag can have a longer specification, and a valve may not be provided in the discharge pipe 301.

[0123] In summary, the tray box of the present invention can adapt to various types of discharge pipes. For example, the types of discharge pipes can be divided into an integral type of card seat and discharge pipe (the second preferred embodiment), a split type of card seat and discharge pipe (the first preferred embodiment), a type with a valve (the first preferred embodiment), a type without a valve (the second and third preferred embodiments), a type with a limiting edge (the first and second preferred embodiments), a type without a limiting edge (the third preferred embodiment), a long pipe type, and a short pipe type.

[0124] In addition, the discharge pipe can also have any combination of the above-described type characteristics, and the tray box of the present invention can adapt to all of them.

[0125] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0126] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of protection required by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A pallet box, characterized in that, it comprises: Side walls, the side walls include side wall cover plates, and mounting openings are provided at the bottoms of the side wall cover plates; A discharge port seat, the discharge port seat is pivotally connected to the bottom of the side wall so that the discharge port seat can be switched between an assembled state mounted in the mounting opening and a folded state turned to abut against the side wall cover plate; A chassis, the side walls are pivotally connected to the ends of the chassis; End walls, the end walls are pivotally connected to the ends of the chassis and are adjacent to the side walls, wherein, when the discharge port seat is in the assembled state, the discharge port seat penetrates through the mounting opening and protrudes in the direction towards the inside of the pallet box, when the discharge port seat is in the folded state, the discharge port seat protrudes in the direction towards the outside of the pallet box, when the pallet box is in the folded state, the end walls and the side walls are both pivoted to be flush with the chassis, and the side walls are located above the end walls.

2. The pallet box according to claim 1, characterized in that, the discharge port seat comprises: A discharge port panel, a discharge port is provided on the discharge port panel; Discharge port side plates, two discharge port side plates are connected from the outside of the discharge port panel to both ends of the discharge port panel along the width direction of the pallet box; and A discharge port top plate, the discharge port top plate is connected from the outside of the discharge port panel to the top end of the discharge port panel in the assembled state.

3. The pallet box according to claim 2, characterized in that, At both ends of the discharge port along the width direction, there are provided lugs, the lugs are arranged along the height direction of the pallet box, the lugs are bent from the discharge port panel towards the outside of the pallet box, and at least one end of the two ends of the lugs along the height direction is provided with a lug boss; The discharge port panel includes a limiting platform, and the limiting platform is located on at least one side of the two sides of the lug along the height direction.

4. The pallet box according to claim 2, characterized in that, the discharge port seat includes a plug pin, a first fixing hole is provided on the side wall, and the position of the first fixing hole corresponds to the plug pin in the assembled state. When the discharge port seat is in the assembled state, the locking end of the plug pin rod of the plug pin extends into the first fixing hole to prevent the discharge port seat from disengaging from the assembled state.

5. The pallet box according to claim 4, characterized in that, A second fixing hole is further provided on the side wall, and the position of the second fixing hole corresponds to the plug pin in the folded state. When the discharge port seat is in the folded state, the locking end extends into the second fixing hole to prevent the discharge port seat from disengaging from the folded state.

6. The pallet box according to claim 5, characterized in that, the plug pin further includes a plug pin seat, the plug pin seat is connected to the bottoms of the opposite sides of the two discharge port side plates, a sealing plate is provided on the side of the plug pin seat away from the discharge port side plates, and a perforation is provided on the sealing plate; The plug rod includes a head and a tail. The head is used to extend through the first fixing hole or the second fixing hole. The tail extends through the through hole on the sealing plate. The radial dimension of the tail is adapted to the radial dimension of the through hole, and the radial dimension of the head is larger than that of the tail. The plug further includes a spring. The spring is sleeved on the tail of the plug rod and is located between the sealing plate and the head.

7. The tray box according to claim 6, wherein, the tray box further includes a discharge port cover plate. The discharge port cover plate is pivotally connected to the bottom of the side wall to open or close the installation port. And when the discharge port seat is in the assembled state, the discharge port cover plate can cover the discharge port seat.

8. The tray box according to claim 7, wherein, the side wall further includes: a side wall frame, and the side wall cladding is connected to the inner side of the side wall frame; two discharge port side beams. The two discharge port side beams are arranged on both sides of the installation port along the width direction of the tray box in the height direction of the tray box and are connected to the side wall frame. The discharge port seat is arranged between the two discharge port side beams through a pivot shaft to be pivotable in the vertical direction.

9. The tray box according to claim 8, wherein, both the first fixing hole and the second fixing hole are arranged on the discharge port side beam. The first fixing hole is located at the bottom of the discharge port side beam, and the second fixing hole is located above the first fixing hole.

10. The tray box according to claim 8, wherein, one of the two discharge port side beams is provided with a hinge shaft. The hinge shaft is arranged along the height direction. The discharge port cover plate is connected to the discharge port side beam through the hinge shaft to be pivotable in the horizontal direction.

11. The tray box according to claim 10, wherein, the discharge port cover plate is provided with a hinge shaft sleeve. The hinge shaft extends through the hinge shaft sleeve. The length dimension of the hinge shaft sleeve is smaller than that of the hinge shaft to enable the discharge port cover plate to be movable in the height direction.

12. The tray box according to claim 11, wherein, a hanging plate is arranged at one end of the discharge port cover plate away from the hinge shaft. A cover plate fixing member is arranged on the other one of the two discharge port side beams. When the discharge port cover plate is closed, the hanging plate is connected to the cover plate fixing member to prevent the discharge port cover plate from pivoting. A lead seal hole is arranged on the hanging plate.

13. The tray box according to claim 11, wherein, a cover plate limiting member is arranged at the bottom of the side wall frame. When the discharge port cover plate is opened, the discharge port cover plate can move in the height direction and then pivot to the inner side of the cover plate limiting member. An operation part is arranged on the discharge port cover plate to facilitate the operation of the discharge port cover plate.

14. The tray box according to claim 2, wherein, The pallet box further includes an upper cover, the upper cover including an upper cover frame and an upper cover panel connected to the outer side of the upper cover frame. The upper cover frame includes at least two upper cover crossbeams. When the pallet box is in the folded state, the upper cover is located above the side wall, and the discharge port seat is received in the space surrounded by two adjacent upper cover crossbeams and the upper cover panel.

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