Connecting shaft combination structure for extension fork plate transmission

Abstract

The utility model provides a connecting shaft combination structure for extension fork plate transmission, which solves the problems that a conventional connecting shaft for transmission is in a whole type, a trolley needs to be integrally disassembled or rotated by 180 degrees for installation in the disassembly and assembly process, errors are easy to occur, an electrical wiring part is easy to involve and the like, and the main scheme is that the connecting shaft combination structure comprises a multi-layer shuttle vehicle, the two ends of the top of the multi-layer shuttle vehicle are symmetrically provided with multi-stage stretching and forking plates and chain type transmission parts corresponding to the stretching and forking plates, the two chain type transmission parts are in transmission through the combined structure, and the combined structure comprises a coupling sleeve, a fixing part and two linear bearings corresponding to the chain type transmission parts respectively. The end, corresponding to the chain type transmission piece, of the linear bearing is rotationally connected through a bearing seat, the coupling sleeve is embedded in the other end of the linear bearing and detachably and fixedly connected with the linear bearing through the fixing piece, and the axial length of the coupling sleeve is smaller than half of the axial length of the linear bearing.

Description

Technical Field

[0001] This utility model relates to the field of multi-layer shuttle technology, and in particular to a connecting shaft assembly structure for fork plate transmission. Background Technology

[0002] For multi-level shuttle cars used for rail transport in logistics warehouses, they are generally equipped with forklifts that can extend for cargo. The transmission between the forklifts usually relies on structures inside the car, such as drive shafts, connecting shafts, and drive chains. As for the connecting shafts, if the car is transported in an environment with water, they will inevitably come into contact with moisture. Rusting, jamming, and abnormal noises are common problems that can easily occur after long-term operation.

[0003] As per the instruction manual Figure 2 As shown, existing connecting shafts are generally integral and have a long shaft body. When the connecting shaft wears out after a period of use and needs to be replaced or maintained, the entire trolley needs to be disassembled or the connecting shaft needs to be rotated 180° for installation. This is cumbersome and prone to errors, especially since it involves electrical wiring and other aspects. To address this, we propose a connecting shaft assembly structure for fork extension plate transmission to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a connecting shaft assembly structure for extension fork transmission that facilitates subsequent disassembly, assembly, maintenance or replacement of the connecting shaft.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a connecting shaft assembly structure for fork plate transmission, including a multi-level shuttle car, wherein multi-level fork plates and chain transmission components corresponding to the fork plates are symmetrically arranged at both ends of the top of the multi-level shuttle car, and the two chain transmission components are transmitted through the assembly structure. The assembly structure includes a connecting sleeve, a fixing member, and two linear bearings respectively corresponding to the chain transmission components. One end of the linear bearing corresponding to the chain transmission component is rotatably connected through a bearing seat, and the other end is embedded in the connecting sleeve and detachably fixed to it through the fixing member. The shaft length of the connecting sleeve is less than half the shaft length of the linear bearing.

[0006] Furthermore, the fastener includes a hexagonal head screw, a nut, and a washer. The two linear bearings are coaxially arranged opposite each other, and a first positioning hole corresponding to the hexagonal head screw is opened at their relatively close ends. The connecting sleeve has second positioning holes symmetrically opened at both ends. The hexagonal head screw is embedded through the second positioning hole and the first positioning hole and is exposed on the connecting sleeve. Its exposed end is locked by the nut and the washer.

[0007] Furthermore, the fixing component includes a V-shaped blade and a ball bearing disposed on at least one side of the V-shaped blade. One end of the V-shaped blade is provided with a slot corresponding to the ball bearing, and the other end is welded and fixed in the linear bearing. The two linear shafts are provided with a first positioning hole at their relatively close ends. The ball bearing is fixed in the jaws and exposed in the first positioning hole. The connecting sleeve is provided with a second positioning hole symmetrically at both ends. The ball bearing can be exposed in the second positioning hole and engaged and fixed with the inner wall of the hole.

[0008] Furthermore, the second positioning hole comprises a plurality of holes and is evenly distributed along the axial direction of the connecting sleeve.

[0009] Furthermore, the length of the shaft segment embedded in the connecting sleeve of the linear bearing is not less than 40mm, and the wall thickness of the connecting sleeve does not exceed 5mm.

[0010] Furthermore, the linear bearing shaft is provided with multiple keyways for external mounting, and screw holes are pre-set in the keyways.

[0011] Compared with the prior art, the beneficial effects of this utility model include: by connecting two linear bearings with a connecting sleeve instead of the original whole connecting shaft, when the linear bearing needs to be replaced or maintained, only the corresponding fastener needs to be removed to maintain the section of the linear bearing that needs maintenance. The fastener can be of various forms, such as common nuts, bolts, and ball clips. The disassembly and assembly process does not require the entire trolley to be disassembled, minimizing the impact on the electrical circuit. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0013] Figure 1 The schematic diagram shows an overall structure of a trolley according to one embodiment of the present invention;

[0014] Figure 2 The schematic diagram shows the original combined structure according to the background art of this utility model;

[0015] Figure 3 The schematic diagram shows a combined structure according to an embodiment 1 of the present invention;

[0016] Figure 4 The schematic diagram shows an internal cross-sectional view of the combined structure according to an embodiment 1 of the present invention;

[0017] Figure 5 The schematic diagram shows a combined structure according to an embodiment 2 of the present invention.

[0018] The following are the labels in the diagram: 1. Multi-level shuttle; 2. Extending fork plate; 3. Chain drive component; 4. Combined structure; 41. Connecting sleeve; 42. Fixing component; 421. Hexagonal head screw; 422. Nut; 423. Washer; 424. First positioning hole; 425. Second positioning hole; 426. V-shaped blade; 427. Ball bearing; 428. Insert; 43. Linear bearing; 44. Bearing housing; 45. Keyway; 46. Screw hole. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] According to one embodiment of the present invention, in conjunction with Figures 1-5 As shown.

[0021] A connecting shaft assembly structure 4 for driving a fork extension plate 2 includes a multi-level shuttle car 1. The top two ends of the multi-level shuttle car 1 are symmetrically arranged with multi-stage fork extension plates 2 and chain drive components 3 corresponding to the fork extension plates 2. The two chain drive components 3 are driven by the assembly structure 4. The assembly structure 4 includes a connecting sleeve 41, a fixing member 42, and two linear bearings 43 respectively corresponding to the chain drive components 3. One end of the linear bearing 43 corresponding to the chain drive component 3 is rotatably connected to the chain drive component 3 through a bearing seat 44, and the other end is embedded in the connecting sleeve 41 and detachably fixed to it through the fixing member 42. The shaft length of the connecting sleeve 41 is less than half the shaft length of the linear bearing 43.

[0022] like Figure 3 As shown, this application uses a connecting sleeve 41 to connect two linear bearings 43 instead of the original whole connecting shaft. When the linear bearing 43 needs to be replaced or maintained, only the corresponding fastener 42 needs to be removed to maintain the section of linear bearing 43 that needs maintenance. There is no need to disassemble the entire trolley, thus minimizing the impact on the electrical circuit.

[0023] Furthermore, regarding the specific dimensions of the combined structure 4, the length of the shaft segment of the linear bearing 43 embedded in the connecting sleeve 41 is not less than 40mm, the wall thickness of the connecting sleeve 41 is not more than 5mm, and the shaft of the linear bearing 43 is also provided with multiple keyways 45 for external installation, and screw holes 46 are preset in the keyways 45.

[0024] Similarly, the form of the fastener 42 may include various forms, which will be described below with reference to two embodiments.

[0025] Example 1

[0026] like Figure 3 and Figure 4 As shown, in this embodiment, the fastener 42 includes a hexagonal head screw 421, a nut 422, and a washer 423. The two linear bearings 43 are coaxially arranged opposite each other, and their relatively close ends are provided with a first positioning hole 424 corresponding to the hexagonal head screw 421. The connecting sleeve 41 is provided with second positioning holes 425 symmetrically at both ends. The hexagonal head screw 421 is embedded through the second positioning hole 425 and the first positioning hole 424 and is exposed on the connecting sleeve 41. Its exposed end is locked by the nut 422 and the washer 423.

[0027] When the shaft is worn by the linear bearing 43, simply remove the two hexagonal head screws 421 and slide the connecting sleeve to the other side to replace or rotate it 180° for assembly and use, without disassembling the entire vehicle.

[0028] Example 2

[0029] like Figure 5 As shown, in this embodiment, the fixing member 42 includes a V-shaped blade 426 and a ball bearing 427 disposed on at least one side of the V-shaped blade 426. One end of the V-shaped blade 426 is provided with a slot 428 corresponding to the ball bearing 427, and the other end is welded to the linear bearing 43. The two linear shafts are provided with a first positioning hole 424 at their relatively close ends. The ball bearing 427 is fixed in the jaws and exposed in the first positioning hole 424. The connecting sleeve 41 is provided with second positioning holes 425 symmetrically at both ends. The ball bearing 427 can be exposed in the second positioning hole 425 and engaged with the inner wall of the hole.

[0030] During disassembly and assembly, simply press down on the ball bearing 427. After sliding one end of the ball bearing 427 along the inner wall of the connecting sleeve 41, it will engage in the second positioning hole 425, thereby connecting the two linear bearings 43 to the connecting sleeve 41. The disassembly and assembly process is synchronized, simple and convenient.

[0031] Similarly, to ensure the distance of the linear bearing 43 embedded in the connecting sleeve 41, the second positioning hole 425 in Embodiments 1 and 2 includes multiple holes and is evenly distributed axially around the connecting sleeve 41, which can be selected by the operator.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A connecting shaft assembly structure for a fork extension plate drive, comprising a multi-level shuttle car, wherein multi-stage fork extension plates and corresponding chain drive components are symmetrically arranged at both ends of the top of the multi-level shuttle car, characterized in that: The two chain drive components are driven by the combined structure, which includes a connecting sleeve, a fixing member, and two linear bearings corresponding to the chain drive components. One end of the linear bearing corresponding to the chain drive component is rotatably connected by a bearing seat, and the other end is embedded in the connecting sleeve and detachably fixed to it by the fixing member. The shaft length of the connecting sleeve is less than half the shaft length of the linear bearing.

2. The connecting shaft assembly structure for a fork extension plate drive according to claim 1, characterized in that: The fastener includes a hexagonal head screw, a nut, and a washer. The two linear bearings are coaxially arranged opposite each other, and a first positioning hole corresponding to the hexagonal head screw is opened at their relatively close ends. The connecting sleeve has second positioning holes symmetrically opened at both ends. The hexagonal head screw is embedded through the second positioning hole and the first positioning hole and is exposed on the connecting sleeve. Its exposed end is locked by the nut and the washer.

3. The connecting shaft assembly structure for a fork extension plate drive according to claim 1, characterized in that: The fastener includes a V-shaped blade and a ball bearing disposed on at least one side of the V-shaped blade. One end of the V-shaped blade has a slot corresponding to the ball bearing, and the other end is welded to the linear bearing. The two linear shafts have a first positioning hole at their relatively close ends. The ball bearing is fixed in the jaws and exposed in the first positioning hole. The connecting sleeve has a second positioning hole symmetrically opened at both ends. The ball bearing can be exposed in the second positioning hole and engaged with the inner wall of the hole for fixation.

4. A connecting shaft assembly structure for a fork extension plate drive according to claim 2 or 3, characterized in that: The second positioning hole includes a plurality of holes and is evenly distributed along the axial direction of the connecting sleeve.

5. The connecting shaft assembly structure for a fork extension plate drive according to claim 1, characterized in that: The length of the shaft section embedded in the connecting sleeve of the linear bearing is not less than 40mm, and the wall thickness of the connecting sleeve is not more than 5mm.

6. The connecting shaft assembly structure for a fork extension plate drive according to claim 1, characterized in that: The linear bearing shaft also has multiple keyways for external mounting, and screw holes are pre-set in the keyways.

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