Walking wheel set structure and stacking machine

Abstract

The utility model discloses a walking wheel set structure and stacker, the walking wheel set structure includes: walking wheel set mechanism and lower crossbeam body, the walking wheel set mechanism includes walking wheel carrier, wheel set subassembly and guide wheel subassembly, the wheel set subassembly is installed in the walking wheel carrier, and the guide wheel subassembly is installed in the walking wheel carrier. One end of the walking wheel frame is detachably connected with the lower cross beam body, and the other end of the walking wheel frame is connected with the guide wheel assembly. By means of the split design of the walking wheel set mechanism and the lower cross beam body, one-time clamping and machining of the lower cross beam body can be achieved, meanwhile, the length of the lower cross beam body is shortened, the machining technology is greatly simplified, and therefore the machining precision can be guaranteed more easily; in addition, through the structural design of the wheel set assembly, the disassembly and assembly manufacturability of the walking wheel and the bearing support is greatly optimized, the walking wheel set mechanism is more convenient to replace and maintain, the replacement difficulty is reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stackers, in particular to a walking wheel group structure and a stacker. Background Art

[0002] In automated warehousing and logistics systems, stacker cranes are core equipment, and their performance and reliability directly affect the operating efficiency and cost of the entire system. As the key component for achieving horizontal movement, the stacker crane's travel mechanism is particularly important for its design rationality and manufacturing precision. Currently, the design of stacker crane travel mechanisms in the industry is mainly divided into two types:

[0003] The first is: the walking mechanism of the finished wheel box structure, which uses a pin to connect the finished wheel box with the wheel frame on the lower crossbeam of the stacker, realizing the rapid installation and positioning of the walking wheels. However, the limitations of this design are also very obvious: the finished wheel box is difficult to process because it needs to meet high manufacturing precision and durability requirements, resulting in a significant increase in production costs. Secondly, the wheel frame on the lower crossbeam needs to be precisely designed and machined with pin holes that match the wheel box. The shape accuracy and position accuracy of these pin holes are extremely high to ensure the consistency of the installation angle of the walking wheels, which undoubtedly increases the difficulty and cost of processing. In addition, the close connection between the wheel box and the wheel frame makes the disassembly process complicated, which is not conducive to subsequent maintenance and replacement, further pushing up maintenance costs.

[0004] The second type uses a bearing-mounted travel mechanism without a wheel box. Bearing mounting holes are machined directly into the lower crossbeam, and the travel wheels are integrated into the lower crossbeam. While this design simplifies the structure, failure of a bearing or travel wheel requires disassembly of the entire lower crossbeam or complex disassembly for replacement, significantly increasing maintenance difficulty and downtime. Utility Model Content

[0005] The utility model aims to provide a walking wheel group structure and a stacker, aiming to solve the problems of the existing walking mechanism being difficult to manufacture or maintain.

[0006] An embodiment of the present utility model provides a walking wheel group structure, including: a walking wheel group mechanism and a lower cross beam body, the walking wheel group mechanism includes a walking wheel frame, a wheel group assembly and a guide wheel assembly, the wheel group assembly is installed in the walking wheel frame, one end of the walking wheel frame is detachably connected to the lower cross beam body, and the other end of the walking wheel frame is connected to the guide wheel assembly.

[0007] Furthermore, the walking wheel frame includes: a first mounting plate, a second mounting plate, a third mounting plate, a fourth mounting plate and a fifth mounting plate, the first mounting plate, the second mounting plate, the third mounting plate, the fourth mounting plate and the fifth mounting plate form a box structure, the box structure has a mounting cavity and a notch connected to the mounting cavity, the first mounting plate and the second mounting plate are arranged opposite to each other, the third mounting plate and the fourth mounting plate are arranged opposite to each other, the fifth mounting plate is arranged opposite to the notch, the wheel group assembly is installed in the mounting cavity, the first mounting plate is detachably connected to the lower cross beam, and the second mounting plate is connected to the guide wheel assembly.

[0008] Furthermore, the first mounting plate is provided with a stopper, and the lower cross beam is provided with a stopper; or the first mounting plate is provided with a stopper, and the lower cross beam is provided with a stopper;

[0009] The stop platform is cooperatively connected with the stop to achieve accurate positioning of the walking wheel assembly mechanism and the lower cross beam.

[0010] Furthermore, the wheel assembly includes: two bearing seats, a walking shaft and a walking wheel for being placed on the track, the two bearing seats are respectively installed on the walking wheel frame, the two ends of the walking shaft are respectively rotatably installed on the two bearing seats, and the walking wheel is installed on the walking shaft.

[0011] Furthermore, a spherical roller bearing is provided in the bearing seat, and the traveling shaft is mounted on the spherical roller bearing.

[0012] Furthermore, the wheel assembly also includes: a sealing end cover and a sealing ring, the bearing seat includes a bearing seat body, the sealing ring is arranged between the bearing seat body and the spherical roller bearing and is located on one side of the bearing seat body, and the sealing end cover is installed on the other side of the bearing seat body.

[0013] Furthermore, the wheel assembly further includes: a expansion sleeve, and the traveling wheel and the traveling shaft are connected via the expansion sleeve.

[0014] Furthermore, the guide wheel assembly includes: two guide wheels, both of which are installed on the other end of the walking wheel frame and are respectively located on both sides of the track.

[0015] Furthermore, the guide wheel assembly also includes: an eccentric shaft and a locking ring, one end of the eccentric shaft is connected to the guide wheel, the other end of the eccentric shaft is connected to the locking ring, and the locking ring is installed on the other end of the walking wheel frame.

[0016] The embodiment of the present utility model further provides a stacker, comprising: the above-mentioned walking wheel group structure.

[0017] The utility model discloses a walking wheel assembly structure and a stacker. The walking wheel assembly structure includes: a walking wheel assembly mechanism and a lower cross beam body. The walking wheel assembly mechanism includes a walking wheel frame, a wheel assembly and a guide wheel assembly. The wheel assembly assembly is installed in the walking wheel frame. One end of the walking wheel frame is detachably connected to the lower cross beam body, and the other end of the walking wheel frame is connected to the guide wheel assembly. The utility model can realize one-time clamping and processing of the lower cross beam body through the separate design of the walking wheel assembly mechanism and the lower cross beam body, and at the same time shortens the length of the lower cross beam body, greatly simplifies the processing technology, and thus makes it easier to ensure the processing accuracy; in addition, through the structural design of the wheel assembly, the disassembly and assembly process of the wheel assembly is greatly optimized, making the replacement and maintenance of the walking wheel assembly mechanism more convenient, reducing the difficulty of replacement and improving the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the structure between the walking wheel assembly mechanism, the lower crossbeam and the track;

[0020] Figure 2 for Figure 1 Partial diagram of A in the middle;

[0021] Figure 3 This is a schematic structural diagram of the traveling wheel assembly from a first-person perspective;

[0022] Figure 4 A schematic structural diagram of the traveling wheel assembly from a second perspective;

[0023] Figure 5 is a structural schematic diagram of the third mounting plate;

[0024] Figure 6 It is a cross-sectional schematic diagram of the traveling wheel assembly mechanism;

[0025] Figure 7 It is a structural diagram of the eccentric shaft;

[0026] Description of the marks in the figure:

[0027] 1. Travel wheel assembly mechanism; 11. Travel wheel frame; 111. First mounting plate; 1111. Stopper; 1112. Mounting portion; 112. Second mounting plate; 113. Third mounting plate; 1131. Wheel assembly mounting hole; 1132. Mounting groove; 114. Fourth mounting plate; 115. Fifth mounting plate; 116. Mounting cavity; 117. Notch; 118. Horizontal rib plate; 119. End reinforcement plate; 1 2. Wheel assembly; 121. Bearing seat; 1211. Spherical roller bearing; 1212. Bearing seat body; 122. Traveling shaft; 123. Traveling wheel; 124. Sealing end cap; 125. Sealing ring; 126. Expansion sleeve; 127. Shaft end cap; 13. Guide wheel assembly; 131. Guide wheel; 132. Eccentric shaft; 1321. Eccentric shaft segment; 1322. Fixed shaft segment; 133. Locking ring;

[0028] 2. Lower crossbeam; 21. Stopper;

[0029] 3. Track. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0032] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0033] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0034] See also Figure 1-3This embodiment provides a walking wheel group structure, including: a walking wheel group mechanism 1 and a lower cross beam body 2. The walking wheel group mechanism 1 includes a walking wheel frame 11, a wheel group assembly 12 and a guide wheel assembly 13. The wheel group assembly 12 is installed in the walking wheel frame 11. One end of the walking wheel frame 11 is detachably connected to the lower cross beam body 2, and the other end of the walking wheel frame 11 is connected to the guide wheel assembly 13.

[0035] This embodiment realizes the one-time installation and processing of the lower cross beam 2 through the separate design of the walking wheel assembly mechanism 1 and the lower cross beam body 2, and also shortens the length of the lower cross beam body 2, greatly simplifies the processing technology, and thus makes it easier to ensure the processing accuracy; in addition, through the structural design of the wheel assembly 12, the disassembly and assembly processability of the wheel assembly 12 is greatly optimized, making the replacement and maintenance of the walking wheel assembly mechanism 1 more convenient, reducing the difficulty of replacement, and improving the replacement efficiency.

[0036] In this embodiment, please refer to Figure 3 and Figure 4 The walking wheel frame 11 includes: a first mounting plate 111, a second mounting plate 112, a third mounting plate 113, a fourth mounting plate 114 and a fifth mounting plate 115. The first mounting plate 111, the second mounting plate 112, the third mounting plate 113, the fourth mounting plate 114 and the fifth mounting plate 115 form a box structure. The box structure has a mounting cavity 116 and a notch 117 connected to the mounting cavity 116. The first mounting plate 111 and the second mounting plate 112 are arranged opposite to each other, the third mounting plate 113 and the fourth mounting plate 114 are arranged opposite to each other, and the fifth mounting plate 115 is arranged opposite to the notch 117. The wheel assembly 12 is installed in the mounting cavity 116. The first mounting plate 111 is detachably connected to the lower cross beam 2, and the second mounting plate 112 is connected to the guide wheel assembly 13.

[0037] The box structure is enclosed by the first mounting plate 111, the second mounting plate 112, the third mounting plate 113, the fourth mounting plate 114 and the fifth mounting plate 115. This closed design greatly enhances the overall rigidity and stability of the walking wheel frame 11. The box structure can effectively resist external impact and deformation, ensuring that the walking wheel 123 group can still operate stably under complex working conditions. A mounting cavity 116 is formed inside the box structure for installing the wheel assembly 12, which makes full use of the space and makes the entire wheel frame structure compact and efficient. At the same time, the wheel assembly can be installed on the track 3 through the design of the notch 117, ensuring that the wheel assembly can operate normally on the track 3. The guide wheel assembly 13 can ensure that the wheel assembly 12 runs along the predetermined track during movement, reduce offset and error, and improve the stability and accuracy of the overall operation.

[0038] Furthermore, the first mounting plate 111, the second mounting plate 112, the third mounting plate 113, the fourth mounting plate 114 and the fifth mounting plate 115 can be connected by riveting, bonding, screw connection, clamping, plugging and welding. Preferably, the first mounting plate 111, the third mounting plate 113, the fourth mounting plate 114 and the fifth mounting plate 115 of this embodiment are connected by welding. The welding connection strength is extremely high and is not easy to loosen. This high-strength connection method enables the walking wheel frame 11 to stably bear the weight of the stacker for a long time without deformation.

[0039] In this embodiment, the detachable connection between the first mounting plate 111 and the lower cross beam 2 can be a snap-on connection, for example, a snap-on structure is designed on the first mounting plate 111, a corresponding slot or hole is provided on the lower cross beam 2, and the two are connected together by snapping the snap into the slot or hole. Alternatively, it can be a pin connection, in which a pin hole is provided on the first mounting plate 111, and a corresponding pin seat or hole is provided on the lower cross beam 2, and the pin is inserted into the hole and fixed to achieve the connection. In this embodiment, a bolt connection is adopted, in which corresponding screw holes or through holes are respectively provided on the first mounting plate 111 and the lower cross beam 2, and then bolts are passed through these holes and tightened with nuts to achieve a detachable connection. The bolt connection is firm and easy to disassemble.

[0040] In this embodiment, please refer to Figure 2 , a stopper 1111 is provided on the first mounting plate 111, and a stopper 21 is provided on the lower cross beam 2; or a stopper 21 is provided on the first mounting plate 111, and a stopper 1111 is provided on the lower cross beam 2;

[0041] The stop platform 1111 is connected in cooperation with the stop 21 to achieve precise positioning of the walking wheel assembly mechanism 1 and the lower cross beam 2.

[0042] The coordinated connection between the stop 21 and the stop platform 1111 can ensure the precise positioning between the traveling wheel assembly mechanism 1 and the lower cross beam 2. During the assembly process, the stop 21 will be accurately inserted into the stop platform 1111, thereby limiting the relative movement between the two and improving the stability and precision of the overall structure. The connection method between the stop 21 and the stop platform 1111 usually has a higher contact area, which enables it to withstand greater loads and impact forces. Therefore, this design can enhance the connection strength between the traveling wheel assembly mechanism 1 and the lower cross beam 2, and improve the stability and durability of the overall structure. At the same time, this design can also prevent the connecting bolts between the traveling wheel assembly mechanism 1 and the lower cross beam 2 from being subjected to shear force, thereby ensuring the reliability of the connection between the traveling wheel assembly mechanism 1 and the lower cross beam 2. Among them, the stop platform 1111 and the stop 21 can be formed by milling.

[0043] In this embodiment, both ends of the first mounting plate 111 protrude from the third mounting plate 113 and the fourth mounting plate 114 to form mounting portions 1112 (eg, Figure 3 As shown), the mounting portion 1112 is provided with a through hole for accommodating the passage of the bolts, and the walking wheel frame 11 further includes: two horizontal ribs 118 (as shown Figure 3 As shown), one horizontal rib plate 118 is horizontally mounted on one mounting portion 1112 and the third mounting plate 113, and another horizontal rib plate 118 is horizontally mounted on another mounting portion 1112 and the fourth mounting plate 114.

[0044] Two horizontal ribs 118 are installed between mounting portion 1112 and the adjacent mounting plate, providing additional support for mounting portion 1112. These ribs 118 not only increase the rigidity of mounting portion 1112 but also enhance its torsional resistance. Furthermore, the provision of horizontal ribs 118 strengthens the connection between first mounting plate 111, third mounting plate 113, and fourth mounting plate 114.

[0045] In this embodiment, the third mounting plate 113 and the fourth mounting plate 114 are both connected to the second mounting plate 112 by bolts. To achieve the bolt connection, the third mounting plate 113 and the fourth mounting plate 114 have an L-shaped end close to the second mounting plate 112. The L-shaped arrangement enables through holes to be provided on the third mounting plate 113 and the fourth mounting plate 114 for accommodating the passage of bolts, thereby enabling bolt connection with the second mounting plate 112.

[0046] The third mounting plate 113 and the fourth mounting plate 114 are both connected to the second mounting plate 112 by bolts so that the second mounting plate 112 can be easily disassembled, so that the wheel assembly 12 can be better installed on the third mounting plate 113 and the fourth mounting plate 114 from the part after the second mounting plate 112 is disassembled.

[0047] Furthermore, the third mounting plate 113 and the fourth mounting plate 114 are both provided with a wheel assembly mounting hole 1131 and a mounting groove 1132 (such as Figure 5 The installation slot 1132 is provided to facilitate the wheel assembly 12 to slide along the installation slot 1132 to the wheel assembly installation hole 1131 for installation.

[0048] Furthermore, due to the design of the mounting groove 1132, the third mounting plate 113 and the fourth mounting plate 114 have insufficient rigidity, which causes both sides of the mounting groove 1132 to be easily deformed, thereby causing the walking wheel assembly mechanism 1 to be unable to operate. In order to improve the rigidity of the third mounting plate 113 and the fourth mounting plate 114, the walking wheel frame 11 of this embodiment further includes: two end surface reinforcement plates 119 (such as Figure 3As shown, two end reinforcement plates 119 are mounted on the third mounting plate 113 and the fourth mounting plate 114, respectively. One end of each end reinforcement plate 119 is connected to one side of the mounting slot 1132, and the other end is connected to the other side of the mounting slot 1132. By connecting both sides of the mounting slot 1132, the end reinforcement plates 119 can increase the rigidity of the third mounting plate 113 and the fourth mounting plate 114, thereby reducing deformation on both sides of the mounting slot 1132 and improving the stability of the walking wheel assembly mechanism 1.

[0049] In this embodiment, please refer to Figure 6 The wheel assembly 12 includes: two bearing seats 121, a walking shaft 122 and a walking wheel 123 for being placed on the track 3. The two bearing seats 121 are respectively installed on the walking wheel frame 11, and the two ends of the walking shaft 122 are respectively rotatably installed on the two bearing seats 121, and the walking wheel 123 is installed on the walking shaft 122.

[0050] By rotatably mounting each end of the travel shaft 122 on two bearing blocks 121, this dual-point support design significantly enhances the overall stability of the travel wheels 123. The bearing blocks 121 provide a secure support point for the travel shaft 122, reducing deflection or loosening due to vibration or impact, and ensuring stable operation of the travel wheels 123 even at high speeds and under heavy loads.

[0051] In this embodiment, the bearing seat 121 is installed in the wheel assembly mounting hole 1131, and the bearing seat 121 is bolted to the walking wheel frame 11.

[0052] The bolt connection makes it easy and quick to disassemble the bearing seat 121. When the bearing seat 121 needs to be maintained, replaced or adjusted, the bearing seat 121 can be easily removed from the walking wheel frame 11 by simply loosening the bolts, which greatly saves maintenance time and cost.

[0053] In this embodiment, a spherical roller bearing 1211 is provided in the bearing seat 121 , and the traveling shaft 122 is mounted on the spherical roller bearing 1211 .

[0054] The spherical roller bearing 1211 enables the traveling wheel 123 to adapt to the angular deviation between the front and rear wheel boxes, thereby improving the running stability and reliability of the equipment.

[0055] In this embodiment, the wheel assembly 12 also includes: a sealing end cover 124 and a sealing ring 125, the bearing seat 121 includes a bearing seat body 1212, the sealing ring 125 is arranged between the bearing seat body 1212 and the spherical roller bearing 1211 and is located on one side of the bearing seat body 1212, and the sealing end cover 124 is installed on the other side of the bearing seat body 1212.

[0056] The sealing ring 125 is compressed and positioned by the sealing end cover 124. The sealing ring 125 is arranged between the bearing seat body 1212 and the spherical roller bearing 1211, and is located on one side of the bearing seat body 1212, while the sealing end cover 124 is located on the other side of the bearing seat body 1212. It can effectively prevent external dust, moisture, impurities and other pollutants from entering the interior of the bearing, thereby maintaining the cleanliness of the bearing and the working environment.

[0057] The sealing ring 125 may be a rubber sealing ring or a metal sealing ring, such as a steel sealing ring. The specific sealing ring to be selected depends on the actual situation and is not limited in this embodiment.

[0058] In this embodiment, the wheel assembly 12 further includes a tightening sleeve 126 , and the traveling wheel 123 and the traveling shaft 122 are connected via the tightening sleeve 126 .

[0059] The expansion sleeve 126 has a safe locking and positioning function, which can improve the connection strength and stability between the walking wheel 123 and the walking shaft 122. At the same time, it is easy to assemble and disassemble, ensuring the convenience of disassembly and assembly between the walking wheel 123 and the walking shaft 122.

[0060] In this embodiment, the wheel assembly 12 also includes: two shaft end covers 127, the two shaft end covers 127 are respectively installed in two spherical roller bearings 1211, and the two shaft end covers 127 are respectively connected to the two end faces of the walking shaft 122, so that the shaft end covers 127 can axially position the walking shaft 122.

[0061] In this embodiment, please refer to Figure 3 and Figure 4 The guide wheel assembly 13 includes two guide wheels 131, which are both installed on the other end of the walking wheel frame 11 and are respectively located on both sides of the track 3. The two guide wheels 131 can limit the walking wheel 123, thereby ensuring that the walking wheel 123 always walks on the track 3.

[0062] Furthermore, the guide wheel assembly 13 also includes: an eccentric shaft 132 and a locking ring 133, one end of the eccentric shaft 132 is connected to the guide wheel 131, and the other end of the eccentric shaft 132 is connected to the locking ring 133, and the locking ring 133 is installed at the other end of the walking wheel frame 11.

[0063] See also Figure 7The gap between the guide wheel 131 and the track 3 can be adjusted via the eccentric shaft 132. The fixed shaft section of the eccentric shaft 132 is mounted in conjunction with the axial hole of the travel wheel frame 11. The axis of the portion of the eccentric shaft 132 connected to the guide wheel 131 (i.e., the eccentric shaft section 1321) is radially eccentric relative to the axis of the portion connected to the travel wheel frame 11 (i.e., the fixed shaft section 1322). When the eccentric shaft 132 rotates about the fixed shaft section 1322, the eccentric shaft section 1321 rotates about the fixed shaft section 1322 with the designed eccentricity as the radius, thereby adjusting the gap between the guide wheel 131 and the track 3. The maximum adjustable gap between the guide wheel 131 and the track 3 is twice the eccentricity. After the gap adjustment is completed, the locking ring 133 can firmly lock the eccentric shaft 132, effectively preventing the axis deviation caused by vibration or external force, and further improving the convenience and reliability of the gap adjustment between the guide wheel 131 and the track 3.

[0064] This embodiment further provides a stacker, comprising: the walking wheel assembly structure of the above embodiment.

[0065] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0066] It should also be noted that, in this specification, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprising" or any other variations thereof are intended to cover non-exclusive.

[0067] Inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A walking wheel structure, characterized in that: include: A walking wheel group mechanism and a lower cross beam body, the walking wheel group mechanism includes a walking wheel frame, a wheel group assembly and a guide wheel assembly, the wheel group assembly is installed in the walking wheel frame, one end of the walking wheel frame is detachably connected to the lower cross beam body, and the other end of the walking wheel frame is connected to the guide wheel assembly.

2. The traveling wheel assembly structure according to claim 1, characterized in that: The walking wheel frame includes: a first mounting plate, a second mounting plate, a third mounting plate, a fourth mounting plate and a fifth mounting plate, the first mounting plate, the second mounting plate, the third mounting plate, the fourth mounting plate and the fifth mounting plate form a box structure, the box structure has a mounting cavity and a notch connected to the mounting cavity, the first mounting plate and the second mounting plate are arranged opposite to each other, the third mounting plate and the fourth mounting plate are arranged opposite to each other, the fifth mounting plate is arranged opposite to the notch, the wheel group assembly is installed in the mounting cavity, the first mounting plate is detachably connected to the lower cross beam, and the second mounting plate is connected to the guide wheel assembly.

3. The traveling wheel assembly structure according to claim 2, characterized in that: The first mounting plate is provided with a stopper, and the lower cross beam is provided with a stopper; or the first mounting plate is provided with a stopper, and the lower cross beam is provided with a stopper; The stop platform is cooperatively connected with the stop to achieve accurate positioning of the walking wheel assembly mechanism and the lower cross beam.

4. The traveling wheel assembly structure according to claim 1, characterized in that: The wheel assembly includes: two bearing seats, a walking shaft and a walking wheel for being placed on the track, the two bearing seats are respectively installed on the walking wheel frame, the two ends of the walking shaft are respectively rotatably installed on the two bearing seats, and the walking wheel is installed on the walking shaft.

5. The traveling wheel assembly structure according to claim 4, characterized in that: A spherical roller bearing is arranged in the bearing seat, and the traveling shaft is installed on the spherical roller bearing.

6. The traveling wheel assembly structure according to claim 5, characterized in that: The wheel assembly also includes: a sealing end cover and a sealing ring. The bearing seat includes a bearing seat body. The sealing ring is arranged between the bearing seat body and the spherical roller bearing and is located on one side of the bearing seat body. The sealing end cover is installed on the other side of the bearing seat body.

7. The traveling wheel assembly structure according to claim 4, characterized in that: The wheel assembly further includes a expansion sleeve, through which the travel wheel and the travel shaft are connected.

8. The traveling wheel assembly structure according to claim 1, characterized in that: The guide wheel assembly includes two guide wheels, both of which are installed on the other end of the walking wheel frame and are respectively located on both sides of the track.

9. The traveling wheel assembly structure according to claim 8, characterized in that: The guide wheel assembly also includes an eccentric shaft and a locking ring, one end of the eccentric shaft is connected to the guide wheel, the other end of the eccentric shaft is connected to the locking ring, and the locking ring is installed at the other end of the walking wheel frame.

10. A stacker, characterized in that: include: The walking wheel assembly structure according to any one of claims 1 to 9.

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