Material carrying device

Abstract

The invention relates to the field of carts with conveying wheels, in particular to a material carrying device. The device is used for solving the problems that when a road surface is uneven, moving wheels of an existing carrying device are prone to being suspended, and the stability of the carrying process is difficult to guarantee. The material carrying device comprises moving bases which are arranged in pairs left and right, moving wheels which are arranged in groups in the front-back direction are installed on the moving bases, a vertical frame is installed on each moving base, a cross beam is connected to the tops of the two vertical frames, and a bearing structure used for bearing materials or a clamping structure used for clamping the materials is arranged on each vertical frame. Wherein one vertical frame and the movable base are fixedly installed, and the other vertical frame and the movable base are rotationally assembled around the axis extending left and right, so that the movable base can swing relative to the vertical frames along with fluctuation of the ground. In this way, the situation that due to the fact that the whole carrying device is of a rigid structure, the moving wheels are suspended on the uneven road surface is avoided, and the overall stability during carrying is improved.

Description

Technical Field

[0001] The invention relates to the field of carts with transport wheels, and in particular to a material handling device. Background Art

[0002] In the process of industrial production, warehousing and transportation, goods need to be transported. Some goods are heavy, so material handling devices are needed during the transportation process.

[0003] The Chinese utility model patent with the authorization announcement number CN218198384U discloses a solid insulated cabinet transporter, which includes a support frame, which is composed of a stand and a crossbeam. The bottom of the stand on the left and right sides is respectively provided with a mobile base, and each mobile base is installed with mobile wheels at the four corners of the lower surface. The inner side of the stand on the left and right sides is provided with a clamping plate along the length direction of the stand, and the clamping plate is provided with a clamping drive device. The two clamping plates can move toward the inside of the support frame under the action of the clamping drive device to clamp the goods. A lifting device is also provided between the clamping plate and the stand, and the lifting device can be used to drive the clamping plate to move up and down to clamp the goods to different heights, and the goods are transported by the mobile wheels at the bottom of the mobile base. Among them, the stand on the left and right sides of the support frame are fixedly connected to the base, that is, the transporter as a whole forms a rigid frame. When the road conditions are uneven, it is very easy for the wheels to be suspended in the air, and it is difficult to ensure the reliability and safety of the transportation process. Summary of the invention

[0004] The object of the present invention is to provide a material handling device to solve the problem that the existing handling device is very likely to have the moving wheels suspended in the air when the road surface is uneven, making it difficult to ensure the stability of the handling process.

[0005] In order to solve the above technical problems, a material handling device of the present invention adopts the following technical solutions: A material handling device includes a mobile base arranged in pairs on the left and right, the mobile bases are equipped with mobile wheels arranged in groups in the front and rear directions, each mobile base is equipped with a vertical frame, the tops of the two vertical frames are connected with a crossbeam, and each vertical frame is respectively provided with a supporting structure for supporting materials or a clamping structure for clamping materials, one of the vertical frames is fixedly installed with the corresponding mobile base, and the other vertical frame is rotatably assembled with the corresponding mobile base around an axis extending left and right, so that the mobile base can swing relative to the vertical frame as the ground rises and falls, and at least some of the mobile wheels are located on the front and rear sides of the axis.

[0006] Furthermore, the stand frame rotatably assembled with the movable base includes a column and an extension frame fixedly connected to the bottom of the column, the extension frame extends in the left-right direction, and the stand frame is rotatably assembled with the movable base through the extension frame.

[0007] Furthermore, the extension frame extends outward from the vertical frame, and the supporting structure or the clamping structure is arranged on the inner side of the vertical frame.

[0008] Furthermore, the extension frame includes a frame body portion located at both sides of the rotation axis, and the frame body portion is limitedly matched with the movable base to limit the swing angle of the movable base.

[0009] Furthermore, the crossbeam is a telescopic structure to adjust the relative distance between the two stands.

[0010] Furthermore, the crossbeam is a telescopic sleeve structure, including a left sleeve and a right sleeve, the left sleeve and the right sleeve are sleeved and matched and are maintained at a desired length by a bolt passing through the two.

[0011] Furthermore, the stand is provided with a lifting drive device, and the lifting drive device drives the supporting structure or the clamping structure to move up and down through a flexible connecting piece.

[0012] Furthermore, the two upright frames are provided with guide structures for guiding the up and down movement of the supporting structure or the clamping structure.

[0013] Furthermore, the guide structure is a guide slot arranged on the inner side of the stand, the guide slots are arranged in pairs and their openings are opposite to each other, the supporting structure or the clamping structure is installed on a lifting plate, the two opposite edges of the lifting plate extend into the guide slot, and the slot wall of the guide slot guides the lifting plate.

[0014] Furthermore, the moving wheel includes a driving steering wheel.

[0015] The present invention proposes a technical solution of element modification, in which two mobile bases are provided, and mobile wheels arranged in groups in the front-rear direction are installed at the bottom of the mobile bases, and two upright frames of the frame structure are respectively connected to the two mobile bases, one of the upright frames of the frame structure is fixedly installed with the corresponding mobile base, and the other upright frame is rotatably assembled with the corresponding mobile base around an axis extending left and right. In this way, when the material handling device runs to an area with uneven road surface, the mobile base corresponding to the other upright frame can swing back and forth relative to the upright frame to adapt to different road conditions, thereby improving the flexibility of the mobile base, avoiding the situation where multiple mobile wheels are suspended in the air due to the uneven road surface caused by the overall rigid structure of the handling device, and improving the overall stability during handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a material handling device of the present invention; Figure 2 A schematic diagram of the structure for installing the left frame module on the left movable base; Figure 3 It is a structural diagram of the right frame module; Figure 4 It is a structural schematic diagram of the right movable base; Figure 5 It is a structural schematic diagram of the cooperation between the lifting drive device and the supporting structure; Figure 6 It is a structural schematic diagram of the rotating assembly of the right vertical frame and the right movable base; Figure 7 for Figure 2 A schematic diagram of the structure from an upward perspective; Figure 8 for Figure 3 A schematic diagram of the structure from an upward perspective; Fig. 9 The present invention is a schematic structural diagram of a material handling device for handling materials.

[0017] In the figure: 1. left frame module; 101. left sleeve; 102. left stand; 2. right frame module; 201. right sleeve; 202. right stand; 203. extension frame; 3. mobile base; 31. left mobile base; 32. right mobile base; 4. lifting drive device; 401. power device; 402. flexible connector; 403. lifting drive device mounting shaft; 404. flexible connector mounting shaft; 5. connecting hole; 6. driving steering wheel; 8. universal wheel; 9. bolt; 10. articulated seat; 1001. articulated seat connecting hole; 11. articulated connecting shaft; 12. lifting plate; 13. guide slide; 14. material clamp; 15. assembly hole; 16. material. DETAILED DESCRIPTION

[0018] The present invention proposes a technical solution with element changes to address the problems existing in the above technical solutions. The core concept of the present invention is: two mobile bases are set, and mobile wheels arranged in groups in the front-to-back direction are installed at the bottom of the mobile bases, and the two upright frames of the frame structure are respectively connected to the two mobile bases, one of the upright frames of the frame structure is fixedly installed with the corresponding mobile base, and the other upright frame is rotationally assembled with the corresponding mobile base around an axis extending left and right. In this way, when the material handling device runs to an area with uneven road surface, the mobile base corresponding to the other upright frame can swing back and forth relative to the upright frame to adapt to different road conditions, thereby improving the flexibility of the mobile base, avoiding the situation where multiple mobile wheels are suspended in the air due to uneven road surface caused by the overall rigid structure of the handling device, and improving the overall stability during handling.

[0019] In view of the above-mentioned inventive concept, a material handling device of the present invention comprises: Figure 1The mobile bases 3 are arranged in pairs on the left and right, and the mobile bases 3 are equipped with mobile wheels arranged in groups in the front-to-back direction. Each mobile base 3 is equipped with a stand, and the tops of the two stands are connected with a crossbeam. Each stand is respectively provided with a supporting structure for supporting materials or a clamping structure for clamping materials. One of the stands is fixedly installed with the corresponding mobile base 3, and the other stand is rotatably assembled with the corresponding mobile base 3 around an axis extending left and right, so that the mobile base 3 can swing relative to the stand as the ground rises and falls, and at least part of the mobile wheels are located at the front and rear sides of the axis. Figure 1 As shown, there are two mobile bases 3 in this embodiment. The mobile base 3 on the left is called the left mobile base 31, and the mobile base 3 on the right is called the right mobile base 32. The frame connected to the left mobile base is called the left frame 102, and the frame connected to the right mobile base is called the right frame 202. The left frame 102 of this embodiment is fixedly connected to the left mobile base 31, and the right frame 202 is rotatably assembled on the right mobile base 32. The left frame 102, the right frame 202 and the crossbeam constitute an integral frame structure. The frame structure and the left mobile base 31 form a rigid whole to ensure the stability of the frame structure. The rotatable assembly with the right mobile base 32 allows the right mobile base 32 to swing back and forth relative to the axis extending left and right to adapt to different road conditions, thereby improving the flexibility of the mobile base, avoiding the situation where multiple moving wheels are suspended in the uneven road surface due to the rigid structure of the handling device as a whole, and improving the overall stability of the material handling device.

[0020] In this embodiment, the stand rotatably assembled with the mobile base 3 includes a column and Figure 3 The extension frame 203 is fixedly connected to the bottom of the column, and the extension frame 203 extends in the left and right direction. The stand frame is rotatably assembled with the mobile base 3 through the extension frame 203. The stand frame includes two parallel columns, and the extension frame is a horizontal rectangular frame structure. The stand frame is installed on one side of the extension frame. Figure 3 , Figure 4 As shown, the extension frame 203 of this embodiment is provided with an assembly hole 15, the right movable base 32 is provided with an articulated seat 10, the articulated seat 10 is provided with an articulated seat connection hole 1001, and the installation of the two is achieved through the articulated connection shaft 11. The extension frame is a horizontal frame structure, and the setting of the extension frame 203 increases the area of ​​the right vertical frame 202 and the right movable base 32 for limiting the matching, ensuring the reliability of the matching between the two. In addition, in other embodiments, the vertical frame may also only include a column, and is directly rotatably assembled with the movable base through the bottom of the column.

[0021] In this embodiment, the extension frame 203 extends to the outside of the stand, and the supporting structure or the clamping structure is arranged on the inside of the stand. The plate surfaces of the two supporting bases 3 also extend to the outside of the stand, and the inner ends of the supporting bases 3 are flush with the inner sides of the left and right stands. At this time, the extension frame 203 is also extended to the outside of the stand, and the inner ends of the right stand 202, the extension frame 203 and the right supporting base 32 are flush. In this way, when the supporting structure and the clamping structure are equipped with a lifting drive device so as to be able to move downward, the extension frame 203 will not interfere with the supporting structure and the clamping structure, which facilitates the downward movement of the supporting structure and the clamping structure. In addition, in other embodiments, the extension frame may also extend to the inside of the stand.

[0022] In this embodiment, the extension frame 203 includes a frame body part located on both sides of the rotation axis, and the frame body part is limitedly matched with the mobile base 3 to limit the swing angle of the mobile base 3. The bottom of the extension frame 203 is a plane. When the extension frame 203 and the right mobile base 32 are rotated and assembled, there is a certain gap between the bottom surface of the extension frame 203 and the right mobile base 32. The part of the extension frame 203 located on both sides of the rotation axis can cooperate with the right mobile base 32 to control the relative swing of the two within a certain range, so as to avoid the instability of the material handling device caused by the large swing amplitude between the right mobile base 32 and the right vertical frame 202. In addition, in other embodiments, an articulated seat can be set at the bottom of the right vertical frame and the upper part of the right mobile base, and the rotation assembly of the two can be realized through an articulated connecting shaft, and a limit plate can be set on the right mobile base in the front and rear directions of the articulated seat to limit the swing angle of the mobile base through the limit plate.

[0023] In a preferred embodiment, the crossbeam is a retractable structure to adjust the relative distance between the left and right frames. In this way, when a supporting structure is provided on the frame, the relative distance between the two supporting structures can be adjusted to support materials 16 of different lengths; when a clamping structure is provided on the frame, the relative distance between the two clamping structures can be adjusted to facilitate the two clamping structures to clamp the materials. At the same time, after the crossbeam is extended or retracted, the width of the entire material handling device can also be adjusted so that the material handling device can be used in different places of use. In addition, in other embodiments, the crossbeam may also be a non-retractable structure, that is, its length is fixed. In this case, the material handling device with a supporting structure provided on the frame can only carry materials of a fixed length; and for the material handling device with a clamping structure provided on the frame, a clamping drive device needs to be provided so that the clamping structure can clamp the material, such as the clamping drive device in the solid insulated cabinet transporter cited in the background technology.

[0024] In this embodiment, the crossbeam is a telescopic sleeve structure, including: Figure 2 The left sleeve 101 shown and Figure 3The right sleeve 201 shown, the left sleeve 101 and the right sleeve 201 are sleeved together and are kept at the required length by a bolt passing through the two. The left sleeve 101 and the left stand 102 of the frame structure are fixedly connected to form the left frame module 1, and the right sleeve 201 and the right stand 202 of the frame structure are fixedly connected to form the right frame module 2. In this way, the frame structure as a whole is composed of the left frame module 1 and the right frame module 2. In this embodiment, the left sleeve 101 and the right sleeve 201 are both double-sleeve structures, that is, they include two sleeves arranged in parallel, so that they can be matched with the double columns of the stand. In addition, in other embodiments, the left sleeve and the right sleeve can also be a single-sleeve structure, and the stand can also be a single-column structure. The left sleeve 101 of this embodiment is provided with uniform connection holes 5 along its length direction, and the right sleeve 201 is also provided with corresponding connection holes 5. When the two are sleeved together, bolts 9 can be used to fix the two. In addition, in other embodiments, the crossbeam of the frame structure may also include a left sliding bar and a right sliding bar, the left sliding bar and the right sliding bar are abutted against each other, and sliding sleeves are provided on the outside of the two, and connecting holes are provided on the sliding sleeves. The left sliding bar and the right sliding bar are also evenly provided with connecting holes along their length directions, and bolts are passed through the connecting holes of the three to achieve the fixation of the crossbeam of the frame structure.

[0025] In this embodiment, the stand is provided with Figure 5 The lifting drive device 4 shown in the figure drives the supporting structure or the clamping structure to move up and down through a flexible connector 402. In this way, the supporting structure or the clamping structure can lift or lower the material 16, saving manpower and material resources. The lifting drive device 4 includes a power device 401, which is rotated around a horizontally arranged lifting drive device installation shaft 403 and assembled on the crossbeam of the frame structure, and a flexible connector 402 is installed at the lower part of the power device 401 around a horizontally arranged flexible connector installation shaft 404. The power device of the lifting drive device moves directly to drive the supporting structure or the clamping structure to move up and down. The stand of this embodiment is also provided with a guide structure for guiding the up and down movement of the supporting structure or the clamping structure. If the direct movement trajectory of the power device is deviated from the direct movement trajectory of the supporting structure or the clamping structure, it is difficult for the power device to drive the supporting structure or the clamping structure to move up and down. The flexible connector compensates for this deviation, so that even if there is an error in the installation of the power device, it can still drive the supporting structure or the clamping structure to move up and down. At the same time, when the ground is uneven and the material handling device shakes during driving, the flexible connector 402 can reduce the impact force generated by the shaking, thereby reducing the probability of the material handling device being damaged by the impact force. In addition, in another embodiment, the lifting drive device can also use a rigid transmission member to drive the supporting structure to move up and down, such as the lifting mechanism in the solid insulation cabinet transport vehicle with the authorization announcement number CN218198384U (i.e., using a transmission screw to move the supporting structure or the clamping structure up and down) can be used.

[0026] In this embodiment, the two uprights are provided with guide structures that can guide the up and down movement of the supporting structure or the clamping structure. In this way, the supporting structure or the clamping structure can be guided to move under the action of the lifting drive device 4, avoiding shaking during the rising or falling process, thereby improving the stability of the rising or falling of the supporting structure or the clamping structure.

[0027] like Figure 7 , Figure 8 In the illustrated embodiment, the guide structure is a guide slot 13 provided on the inner side of the stand. The guide slots 13 are provided in pairs and their openings are opposite to each other. The supporting structure or the clamping structure is installed on a lifting plate 12. The two opposite edges of the lifting plate 12 extend into the guide slot 13. The slot wall of the guide slot 13 guides the lifting plate 12. In addition, in other embodiments, the supporting guide structure may also be a guide rail provided on the left and right stands. The supporting structure is installed on the lifting plate. A guide block is provided on the lifting plate. The guide block on the lifting plate can cooperate with the guide rail to guide the movement of the lifting plate. Of course, in another embodiment, guide rods can be provided on the two stands, and guide holes can be provided on the lifting plate. The hole wall of the guide hole of the lifting plate can cooperate with the guide rod to guide the movement of the lifting plate. The supporting structure of this embodiment is as follows: Figure 8 The material clamping plate 14 shown in the figure has two protruding bosses arranged at intervals, and the upper surfaces of the bosses are inclined inwardly to support the material. Fig. 9 As shown in the figure, the material clamping plate 14 is installed on the lifting plate 12, the flexible connecting member 402 is connected to the lifting plate 12, and the two ends of the flexible connecting member 402 are as follows Figure 5 The screw shown has nuts on both sides of the lifting plate 12, and the flexible connector 402 is installed around the flexible connector shaft and its two ends cooperate with the nuts on the lifting plate 12. When the height of the lifting plate 12 needs to be adjusted, the lifting plate 12 can also be raised or lowered by screwing the screw.

[0028] In this embodiment, the moving wheel includes: Figure 6 The driving steering wheel 6 shown. The bottom of the mobile base 3 is provided with a driving steering wheel 6 and a universal wheel 8. The driving steering wheel 6 can be combined with advanced navigation systems, scheduling systems and sensors to realize intelligent unmanned transportation. At the same time, the driving steering wheel 6 has precise steering control and flexible mobility, which enables the material handling device to efficiently complete the handling task in various working environments. Compared with the traditional fixed wheel or steering method, the driving steering wheel 6 provides higher maneuverability and flexibility, and improves the handling efficiency.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A material handling device, characterized in that: It includes a mobile base arranged in pairs on the left and right, and the mobile base is equipped with mobile wheels arranged in groups in the front and rear directions. Each mobile base is equipped with a vertical frame, and the tops of the two vertical frames are connected with a crossbeam. Each vertical frame is respectively provided with a supporting structure for supporting materials or a clamping structure for clamping materials. One of the vertical frames is fixedly installed with the corresponding mobile base, and the other vertical frame is rotatably assembled with the corresponding mobile base around an axis extending to the left and right, so that the mobile base can swing relative to the vertical frame with the ups and downs of the ground, and at least some of the mobile wheels are located on the front and rear sides of the axis.

2. The material handling device according to claim 1, characterized in that: The stand frame rotatably assembled with the mobile base comprises a column and an extension frame fixedly connected to the bottom of the column, the extension frame extends in the left-right direction, and the stand frame is rotatably assembled with the mobile base through the extension frame.

3. The material handling device according to claim 2, characterized in that: The extension frame extends outward from the vertical frame, and the supporting structure or the clamping structure is arranged on the inner side of the vertical frame.

4. The material handling device according to claim 2 or 3, characterized in that: The extension frame includes a frame body part located at both sides of the rotation axis, and the frame body part is limitedly matched with the movable base to limit the swing angle of the movable base.

5. The material handling device according to any one of claims 1 to 3, characterized in that: The crossbeam is a telescopic structure to adjust the relative distance between the two upright frames.

6. The material handling device according to claim 5, characterized in that: The crossbeam is a telescopic sleeve structure, including a left sleeve and a right sleeve. The left sleeve and the right sleeve are sleeve-matched and are maintained at a required length by a bolt passing through the two.

7. The material handling device according to any one of claims 1 to 3, characterized in that: The stand is provided with a lifting drive device, and the lifting drive device drives the supporting structure or the clamping structure to move up and down through a flexible connecting piece.

8. The material handling device according to claim 7, characterized in that: The two upright frames are provided with guide structures which can guide the up and down movement of the supporting structure or the clamping structure.

9. The material handling device according to claim 8, characterized in that: The guide structure is a guide slot arranged on the inner side of the stand, the guide slots are arranged in pairs and their openings are opposite to each other, the supporting structure or the clamping structure is installed on a lifting plate, the two opposite edges of the lifting plate extend into the guide slot, and the slot wall of the guide slot guides the lifting plate.

10. The material handling device according to any one of claims 1 to 3, characterized in that: The moving wheels include a driving steering wheel.

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