A lifting and reversing mechanism for a four-way shuttle vehicle

Abstract

The present invention relates to the design field of four-way shuttle vehicles, and in particular to a lifting and reversing mechanism for a four-way shuttle vehicle, wherein a roller is fixed to a lower plate surface of a top plate through a roller fixing seat, two ends of a rotating shaft are respectively connected to bearings in two bearing seats, an axial body of the rotating shaft passes through the center of a cam and a disk surface respectively, an arc-shaped hole is provided in the disk surface of the disk along the circumference of the disk surface, one end of a lifting ear is hung in the arc-shaped hole of the disk, a wheel surface of the cam and a wheel surface of the roller are in contact with each other, a limiting unit comprises a guide shaft, a guide seat, a spring and a supporting plate, the guide shaft passes through the limiting hole in the guide seat, the spring is sleeved on the guide shaft, an upper end of the spring abuts against the guide seat, and a lower end of the spring abuts against the supporting plate, the rotating shaft rotates, one end of the arc-shaped hole hooks up the lifting ear and drives the front and rear running wheels of the lower frame to leave the ground to realize reversal, the motor runs in the reverse direction, the cam slowly lifts up the roller, thereby lifting up the top plate, the top plate is used to place goods, and the structure is relatively simple.

Description

Technical Field

[0001] The invention relates to the field of four-way shuttle vehicle design, in particular to a four-way shuttle vehicle lifting and reversing mechanism. Background Art

[0002] As the technology of automated stereoscopic warehouses becomes more and more mature, large, medium and small enterprises have begun to transform automated stereoscopic warehouses. At present, there are many types of storage in and out of stereoscopic warehouses, including stackers, shuttles, mother-and-child vehicles, four-way shuttles and other storage forms. Each storage form has its own advantages and disadvantages. Therefore, different stereoscopic warehouses choose reasonable storage forms, which has a great impact on improving storage efficiency and reducing costs. The four-way shuttle can walk along the track arranged on the shelf. When reversing is required, the moving wheel in one direction rises, and the wheel in the other direction contacts the track and walks along the track to realize the reversing walking function. The top of the four-way shuttle is designed with a lifting mechanism, which can lift the pallet or material box to move it to other cargo positions on the shelf or out of the warehouse. The lifting mechanism in the prior art has a complex structure and the lifting process is not stable enough. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a four-way shuttle vehicle lifting and reversing mechanism, which has a simple structure and can simultaneously display the lifting and auxiliary reversing functions, ensuring that the process of lifting goods is carried out smoothly.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a four-way shuttle lifting and reversing mechanism, including a lifting and reversing unit, a limit unit and a top plate, the lifting and reversing unit includes a roller fixing seat, a roller, a rotating shaft, a cam, a disc, a bearing seat and a lifting lug, the top plate is arranged horizontally, the roller is fixed to the lower plate surface of the top plate through the roller fixing seat, there are two bearing seats, the two ends of the rotating shaft are respectively connected to the bearings in the two bearing seats, the shaft body of the rotating shaft passes through the center of the cam and the disc surface respectively, an arc hole is provided in the disc surface along the circumference of the disc surface, one end of the lifting lug Suspended in the arc-shaped hole of the disc, the wheel surface of the cam and the wheel surface of the roller are in contact with each other, and the rotating shaft is driven by the motor to rotate. The limiting unit includes a guide shaft, a guide seat, a spring and a support plate. The guide shaft is arranged vertically and the upper end is fixed to the lower plate surface of the top plate. The lower end of the guide shaft is vertically connected to the center of the plate surface of the support plate. The guide shaft passes through the limiting hole in the guide seat. The spring is sleeved on the guide shaft, the upper end of the spring rests on the guide seat, and the lower end of the spring rests on the support plate. There are more than two lifting and reversing units and they are arranged at intervals, and there are more than two limiting units and they are arranged at intervals.

[0005] Furthermore, the top plate is a strip plate, there are two lifting and reversing units and they are arranged at intervals along the length direction of the top plate, there are two limiting units and they are arranged at intervals along the length direction of the top plate, the two lifting and reversing units are arranged between the two limiting units, and the rotating shafts in the two lifting and reversing units are driven by the same motor to achieve synchronous rotation.

[0006] Preferably, the cam is a disc cam, the rotating shaft and the disc surface of the cam are perpendicular, the rotating shaft is arranged horizontally, the axial length direction of the rotating shaft and the plate length direction of the top plate are skewed and perpendicular, a sprocket is mounted in the middle of the shaft body of the rotating shaft, and the motor drives the rotating shaft to rotate through a chain transmission.

[0007] Furthermore, the arc where the arc-shaped hole is located is the major arc.

[0008] Preferably, the lifting ear includes a connecting rod, a connecting plate and a base plate, the connecting rod passes through the arc-shaped hole, there are two connecting plates, the two ends of the connecting rod are respectively vertically connected to one end surface of the two connecting plates, the other ends of the two connecting plates are vertically fixed on the surface of the base plate, a first mounting hole is opened on the surface of the base plate, and the disk surface of the disk is arranged in parallel between the two connecting plates.

[0009] Preferably, a second mounting hole is provided on the guide seat.

[0010] Beneficial effect: Generally, the four-way shuttle vehicle includes an upper frame and a lower frame, the left and right traveling wheels are fixed on the upper frame, and the front and rear traveling wheels are fixed on the lower frame. When starting to move, the front and rear traveling wheels of the lower frame touch the ground and start to move forward and backward, the lower frame is arranged below the upper frame, the guide seat is fixed on the upper frame, the two ends of the rotating shaft are respectively fixed to the upper frame through bearing seats, and the other end of the lifting ear is fixed to the lower frame, the motor drives the rotating shaft to rotate, and the disc rotates with the rotating shaft to one end of the arc hole to hook the lifting ear and stretch it upward, thereby pulling the lower frame upward together to make the front and rear traveling wheels leave the ground, and the left and right traveling wheels of the upper frame touch the ground and start to move left and right, thereby realizing the reversing function. The control motor runs in reverse to drive the rotating shaft to rotate in the opposite direction, and the lower frame is re-landed from the bottom to the front and rear walking wheels to realize forward and backward movement. The motor continues to run in the opposite direction, and the cam slowly lifts the roller, thereby slowly lifting the top plate. The top plate is used to place goods, and the cooperation of the guide shaft and the guide seat plays a guiding and limiting role in the up and down movement of the top plate, ensuring the smooth movement of the top plate, and the elastic force of the spring supports the top plate, reduces the pressure and can assist in the lifting of the top plate. The whole structure is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present invention;

[0012] Figure 2 It is a structural diagram of the lifting and reversing unit in the present invention. DETAILED DESCRIPTION

[0013] Combine the following Figure 1-2 , the present invention is further described.

[0014] A four-way shuttle lifting and reversing mechanism, comprising a lifting and reversing unit, a limiting unit and a top plate 10, wherein the lifting and reversing unit comprises a roller fixing seat 21, a roller 22, a rotating shaft 23, a cam 24, a disc 25, a bearing seat 26 and a lifting lug 27, wherein the top plate 10 is arranged horizontally, the roller 22 is fixed to the lower plate surface of the top plate 10 through the roller fixing seat 21, there are two bearing seats 26, the two ends of the rotating shaft 23 are respectively connected to the bearings in the two bearing seats 26, the shaft body of the rotating shaft 23 passes through the center of the cam 24 and the disc 25 respectively, an arc hole 251 is provided in the disc surface of the disc 25 along the circumference of the disc surface, and one end of the lifting lug 27 is hung on the arc hole 25 of the disc 25 In the hole 251, the wheel surface of the cam 24 and the wheel surface of the roller 22 are in contact with each other, and the rotating shaft 23 is driven by the motor to rotate. The limiting unit includes a guide shaft 31, a guide seat 32, a spring 33 and a support plate 34. The guide shaft 31 is arranged vertically and the upper end is fixed to the lower plate surface of the top plate 10. The lower end of the guide shaft 31 is vertically connected to the center of the plate surface of the support plate 34. The guide shaft 31 passes through the limiting hole in the guide seat 32. The spring 33 is sleeved on the guide shaft 31. The upper end of the spring 33 rests on the guide seat 32, and the lower end of the spring 33 rests on the support plate 34. There are more than two lifting and reversing units and they are arranged at intervals, and there are more than two limiting units and they are arranged at intervals.

[0015] Generally, a four-way shuttle vehicle includes an upper frame and a lower frame, wherein left and right running wheels are fixed on the upper frame, and front and rear running wheels are fixed on the lower frame. When starting to move, the front and rear running wheels of the lower frame touch the ground and start to move forward and backward. The lower frame is arranged below the upper frame, and the guide seat 32 is fixed on the upper frame. Both ends of the rotating shaft 23 are respectively fixed to the upper frame through bearing seats 26, and the other end of the lifting ear 27 is fixed to the lower frame. The motor drives the rotating shaft 23 to rotate, and the disc 25 rotates with the rotating shaft 23 to one end of the arc hole 251 to hook the lifting ear 27 and stretch it upward, thereby pulling the lower frame upward together to make the front and rear running wheels leave the ground, and the left and right running wheels of the upper frame touch the ground and start to move left and right, thereby realizing the reversing function. The control motor runs in reverse to drive the rotating shaft 23 to rotate in the opposite direction, and the lower frame is re-grounded by the front and rear walking wheels below to realize forward and backward walking. The motor continues to run in the opposite direction, and the cam 24 slowly lifts the roller 22, thereby slowly lifting the top plate 10. The top plate 10 is used to place goods. The cooperation of the guide shaft 31 and the guide seat 32 plays a guiding and limiting role in the up and down movement of the top plate 10, ensuring the smooth movement of the top plate 10, and the elastic force of the spring 33 supports the top plate 10, reduces the pressure and can assist in the lifting of the top plate 10. The whole structure is relatively simple.

[0016] Furthermore, the top plate 10 is a strip plate, there are two lifting and reversing units and they are arranged at intervals along the length direction of the top plate 10, there are two limiting units and they are arranged at intervals along the length direction of the top plate 10, the two lifting and reversing units are arranged between the two limiting units, and the rotating shafts 23 in the two lifting and reversing units are driven by the same motor to achieve synchronous rotation, further ensuring the smooth lifting and lowering of the top plate 10.

[0017] Preferably, the cam 24 is a disc cam, the rotating shaft 23 and the disc surface of the cam 24 are perpendicular, the rotating shaft 23 is arranged horizontally, the axial length direction of the rotating shaft 23 and the plate length direction of the top plate 10 are skewed and perpendicular, a sprocket 40 is sleeved on the middle part of the shaft body of the rotating shaft 23, and the motor drives the rotating shaft 23 to rotate through a chain transmission.

[0018] Furthermore, the arc where the arc hole 251 is located is a major arc, which can ensure that one end of the arc hole 251 can hook up the lifting ear 27, and can also ensure that during the rotation of the shaft 23, the arc hole 251 can provide an escape space for the lifting ear 27 to prevent the lifting ear 27 from affecting the rotation of the shaft 23.

[0019] Preferably, the lifting ear 27 includes a connecting rod 271, a connecting plate 272 and a base plate 273. The connecting rod 271 passes through the arc hole 251. There are two connecting plates 272. The two ends of the connecting rod 271 are respectively vertically connected to one end surface of the two connecting plates 272. The other ends of the two connecting plates 272 are vertically fixed on the surface of the base plate 273. A first mounting hole 274 is opened on the surface of the base plate 273. The disk surface of the disk 25 is arranged in parallel between the two connecting plates 272. The lifting ear 27 is fixed to the lower frame by screws at the first mounting hole 274.

[0020] Preferably, a second mounting hole 321 is provided on the guide seat 32. The guide seat 32 is fixed to the upper frame by screws at the second mounting hole 321.

[0021] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A four-way shuttle lifting and reversing mechanism, characterized in that: The invention comprises a lifting and reversing unit, a limiting unit and a top plate (10); the lifting and reversing unit comprises a roller fixing seat (21), a roller (22), a rotating shaft (23), a cam (24), a disc (25), a bearing seat (26) and a lifting lug (27); the top plate (10) is arranged horizontally; the roller (22) is fixed to the lower plate surface of the top plate (10) through the roller fixing seat (21); there are two bearing seats (26); two rotating shafts (23) are provided with a plurality of bearing seats (26); and the two rotating shafts (23) are provided with a plurality of bearing seats (26). The ends of the rotating shaft (23) are respectively connected to the bearings in the two bearing seats (26), the shaft body of the rotating shaft (23) passes through the center of the cam (24) and the disk (25), the disk (25) is provided with an arc hole (251) along the circumference of the disk, one end of the ear (27) is hung in the arc hole (251) of the disk (25), the wheel surface of the cam (24) and the wheel surface of the roller (22) are in contact, and the rotating shaft (23) is driven by the motor To realize rotation, the limiting unit comprises a guide shaft (31), a guide seat (32), a spring (33) and a support plate (34); the guide shaft (31) is arranged vertically and the upper end is fixed on the lower plate surface of the top plate (10); the lower end of the guide shaft (31) is vertically connected to the center of the plate surface of the support plate (34); the guide shaft (31) passes through the limiting hole in the guide seat (32); the spring (33) is sleeved on the guide shaft (31); the upper end of the spring (33) abuts on the guide seat (32); the lower end of the spring (33) abuts on the support plate (34); the lifting reversing units are more than two and are arranged at intervals; the limiting units are more than two and are arranged at intervals; the cam (24) is a disc cam; the rotating shaft (23) and the disc surface of the cam (24) are perpendicular; the rotating shaft (23) is arranged horizontally; the axial length direction of the rotating shaft (23) and the plate length direction of the top plate (10) are skewed and perpendicular.

2. The four-way shuttle lifting and reversing mechanism according to claim 1 is characterized in that: The top plate (10) is a strip plate, there are two lifting and reversing units which are arranged at intervals along the length direction of the top plate (10), there are two limiting units which are arranged at intervals along the length direction of the top plate (10), the two lifting and reversing units are arranged between the two limiting units, and the rotating shafts (23) in the two lifting and reversing units are driven by the same motor to achieve synchronous rotation.

3. The lifting and reversing mechanism of the four-way shuttle vehicle according to claim 2 is characterized in that: The arc where the arc-shaped hole (251) is located is the major arc.

4. The lifting and reversing mechanism of the four-way shuttle vehicle according to claim 3 is characterized in that: The lifting ear (27) comprises a connecting rod (271), a connecting plate (272) and a bottom plate (273). The connecting rod (271) passes through the arc-shaped hole (251). There are two connecting plates (272). The two ends of the connecting rod (271) are respectively vertically connected to one end plate surface of the two connecting plates (272). The other ends of the two connecting plates (272) are vertically fixed on the plate surface of the bottom plate (273). A first mounting hole (274) is provided on the plate surface of the bottom plate (273). The disk surface of the disk (25) is arranged in parallel between the two connecting plates (272).

5. The lifting and reversing mechanism of the four-way shuttle vehicle according to claim 4 is characterized in that: The guide seat (32) is provided with a second mounting hole (321).

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