A rotary rail forklift

Abstract

The present invention discloses a rotary rail forklift, comprising: a forklift frame, the forklift frame comprising a support frame, a forklift frame and at least one layer of fork plates fixedly connected to the forklift frame; a lifting mechanism, used to drive the forklift frame to move up and down; a walking mechanism, the walking mechanism comprising a walking trolley and a walking servo reduction motor and a walking wheel arranged on the walking trolley; a rotating mechanism, the rotating mechanism comprising a rotating trolley and a rotating servo reduction motor, the rotating trolley is arranged above the walking trolley and can rotate relative to the walking trolley under the drive of the rotating servo reduction motor; wherein the lower end of the support frame is fixed on the rotating trolley, the upper end of the lifting mechanism is fixedly connected to the forklift frame, and the lower end is fixedly connected to the rotating trolley. In addition to the forward and backward functions, the rotary rail forklift can also rotate 360°, can complete lifting operations in all directions, has high flexibility, and solves the problems of difficult process layout and large plant area.

Description

Technical Field

[0001] The invention relates to a lifting device, in particular to a rotary rail forklift. Background Art

[0002] A rail-mounted forklift is a type of lifting equipment. Currently, the rail-mounted forklifts on the market only have forward and reverse operating functions, so they lack flexibility and are greatly limited by the constraints of the workplace.

[0003] The Chinese patent with the announcement number CN208182557U discloses a new type of electric rotary forklift, which includes a travel system, a support system, and a body. The travel system is provided with a support system on the top, the support system is provided on the body, and the body is provided with a rotary system, a slewing bearing is provided at the center of the body, and a lifting system is provided on one side of the rotary system. The travel system, the rotary system, and the lifting system are all electrically connected to a remote control system. However, the patent only has a single-layer fork plate, which can only be used for light loads, and its lifting system is made of three oil cylinders, and its lifting distance cannot be accurately controlled. Summary of the invention

[0004] In order to overcome the above technical deficiencies, the present invention provides a rotary rail forklift.

[0005] The technical solution adopted by the present invention to overcome the technical problems is:

[0006] A rotary rail forklift, comprising at least:

[0007] A forklift frame, the forklift frame comprising a support frame, a forklift frame and at least one fork plate fixedly connected to the forklift frame;

[0008] Lifting mechanism, used to drive the forklift frame up and down;

[0009] A walking mechanism, the walking mechanism comprising a walking trolley, a walking servo reduction motor and a walking wheel arranged on the walking trolley; and,

[0010] A rotating mechanism, the rotating mechanism comprising a rotating trolley and a rotating servo reduction motor, the rotating trolley being arranged above the traveling trolley and being rotatable relative to the traveling trolley under the drive of the rotating servo reduction motor;

[0011] Wherein, the lower end of the support frame is fixed on the rotating trolley, the upper end of the lifting mechanism is fixedly connected to the forklift frame, and the lower end is fixedly connected to the rotating trolley.

[0012] Furthermore, the rotating trolley includes a rotating trolley horizontal part and a rotating trolley vertical part, wherein the rotating trolley vertical part is fixedly connected to an end of the rotating trolley horizontal part close to the fork plate.

[0013] Furthermore, the lifting mechanism includes an electric cylinder, an upper mounting seat of the electric cylinder and a lower mounting seat of the electric cylinder. The upper end of the electric cylinder is fixedly connected to the forklift frame through the upper mounting seat of the electric cylinder, and the lower end is fixedly connected to the vertical part of the rotating trolley through the lower mounting seat of the electric cylinder.

[0014] Furthermore, the rotating mechanism also includes a transmission mechanism, which includes a gear, an inner plate, a slewing bearing and an outer plate. The slewing bearing includes an inner ring, an outer ring and a rolling body arranged between the inner ring and the outer ring. The inner ring is fixedly connected to the upper surface of the walking trolley through the inner plate, and the outer ring is fixedly connected to the lower surface of the horizontal part of the rotating trolley through the outer plate. The gear is fixed on the output shaft of the rotating servo reduction motor and the gear is meshed with the outer ring.

[0015] Furthermore, it also includes a guide and limiting mechanism, which includes at least two pairs of forklift bearings and at least two pairs of bolt-type bearings. The forklift bearings are arranged between the forklift frame and the vertical part of the rotating trolley, and the axial direction of the forklift bearings is parallel to the ground and perpendicular to the direction of the fork plate. The bolt-type bearings are fixed on the channel steel of the forklift frame, and the axial direction of the bolt-type bearings is parallel to the ground and parallel to the direction of the fork plate.

[0016] Furthermore, an inverted U-shaped frame is symmetrically provided on both sides of the traveling trolley, the traveling wheels include a pair of driving wheels and at least one pair of driven wheels, the driving wheels are connected to the output shaft of the traveling servo reduction motor through a chain coupling, and the driving wheels and the driven wheels are both arranged in the inverted U-shaped frame.

[0017] Furthermore, a plurality of counterweights are provided on the horizontal portion of the rotating trolley and the counterweights are placed at an end away from the fork plate.

[0018] Furthermore, the forklift frame also includes an auxiliary frame, which is fixedly connected to the lower part of the forklift frame and is located on the side opposite to the mounting fork plate.

[0019] Furthermore, the fork plate is detachably fixedly connected to the forklift frame.

[0020] Furthermore, the fork plate is of multi-tooth type.

[0021] The beneficial effects of the present invention are:

[0022] 1. In addition to the forward and backward functions of ordinary rail forklifts, the rotary rail forklift of the present invention can also rotate 360°, so that lifting operations in all directions can be completed by one machine. It has high flexibility, solves the problems of difficult process layout and large plant area, reduces labor intensity, and greatly improves work efficiency.

[0023] 2. The walking servo reduction motor, rotating servo reduction motor and electric cylinder in the present invention are all servo-controlled, so that the forward and backward walking distance can be accurately controlled, the rotation angle can be accurately controlled, and the up and down lifting distance can also be accurately controlled.

[0024] 3. The rotary rail forklift of the present invention can be used for heavy loads and can lift goods ranging from light to more than ten tons in weight, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the rotary rail forklift according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic diagram of the front structural view of the rotary rail forklift described in an embodiment of the present invention.

[0027] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0028] Figure 4 It is a schematic diagram of the partial structure of the rotary rail forklift as viewed from the left according to an embodiment of the present invention.

[0029] Figure 5 It is a bottom view structural schematic diagram of the rotary rail forklift according to an embodiment of the present invention.

[0030] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the middle guide limit mechanism.

[0031] In the figure, 1, forklift frame, 11, support frame, 12, forklift frame, 121, channel steel, 13, fork plate, 14, auxiliary frame, 2, lifting mechanism, 21, electric cylinder, 22, upper mounting seat of electric cylinder, 23, lower mounting seat of electric cylinder, 24, fisheye bearing, 25, pin shaft, 3, walking mechanism, 31, walking trolley, 311, inverted U-shaped frame, 32, walking servo reduction motor, 33, driving wheel, 34, driven wheel , 35. Chain coupling, 4. Rotating mechanism, 41. Rotating trolley, 411. Horizontal part of the rotating trolley, 412. Vertical part of the rotating trolley, 42. Rotating servo reduction motor, 43. Gear, 44. Inner plate, 45. Slewing bearing, 451. Inner ring, 452. Outer ring, 453. Rolling element, 46. Outer plate, 5. Guide limit mechanism, 51. Forklift bearing, 52. Bolted bearing, 6. Counterweight. DETAILED DESCRIPTION

[0032] In order to facilitate those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following is only exemplary and does not limit the protection scope of the present invention.

[0033] like Figure 1 As shown, a rotary rail forklift described in this embodiment at least includes a forklift frame 1, a lifting mechanism 2, a traveling mechanism 3 and a rotating mechanism 4.

[0034] In this embodiment, Figure 1 and 2 As shown, the forklift frame 1 includes a support frame 11, a forklift frame 12 and at least one layer of fork plate 13 fixedly connected to the forklift frame. Preferably, the fork plate 13 is detachably fixedly connected to the forklift frame 12. Specifically, the fork plate 13 is connected to the forklift frame 12 by bolts. The fork plate 13 can be increased or reduced according to the load. In addition, the fork plate can be selected as a single-tooth type or a multi-tooth type according to actual needs. In this embodiment, the fork plate 13 is preferably a multi-tooth type.

[0035] In this embodiment, the lifting mechanism 2 is used to drive the forklift frame 12 to move up and down, thereby driving the goods on the fork plate to move up and down through the fork plate 13. The lifting mechanism 2 can be driven by an electric cylinder or an oil cylinder. In this embodiment, the electric cylinder is preferably used. Figure 4 As shown, the lifting mechanism 2 includes an electric cylinder 21, an upper mounting seat 22 and a lower mounting seat 23. The upper end of the electric cylinder 21 is fixedly connected to the forklift frame 12 through the upper mounting seat 22, and the lower end is fixedly connected to the vertical portion 412 of the rotating trolley through the lower mounting seat 23. Furthermore, a fisheye bearing 24 is provided at the upper end of the electric cylinder 21, and the fisheye bearing 24 is connected to the upper mounting seat 22 of the electric cylinder through a pin 25. In this embodiment, an electric cylinder is used as the drive of the lifting mechanism. Since the electric cylinder is a modular product that integrates a servo motor and a lead screw, high-precision control of the moving distance can be achieved.

[0036] In this embodiment, Figure 2 and 5 As shown, the walking mechanism 3 includes a walking trolley 31 and a walking servo reduction motor 32 and walking wheels arranged on the walking trolley. Preferably, the walking servo reduction motor 32 is arranged in the middle of the walking trolley 31; further, an inverted U-shaped frame 311 is symmetrically provided on both sides of the walking trolley 31, and the walking wheels include a pair of driving wheels 33 and at least one pair of driven wheels 34. In this embodiment, the driven wheels 34 are preferably two pairs, one pair of which is arranged in front of the driving wheel 33 and the other pair is arranged behind the driving wheel 33. The driving wheel 33 is connected to the output shaft of the walking servo reduction motor 32 through a chain coupling 35. The driving wheel 33 and the driven wheel 34 are both arranged in the inverted U-shaped frame 311 and extend from the lower surface of the inverted U-shaped frame 311; the walking servo reduction motor 32 rotates, thereby driving the driving wheel 33 to rotate through the chain coupling 35, and the shaft at one end of each driven wheel 34 is limited, and the driven wheel 34 is driven to walk through the driving wheel 33.

[0037] In this embodiment, Figure 2 and 4 As shown, the rotating mechanism 4 includes a rotating trolley 41 and a rotating servo reduction motor 42, wherein the rotating trolley 41 is arranged above the traveling trolley 31 and can rotate relative to the traveling trolley 31 under the drive of the rotating servo reduction motor 42; specifically, the rotating trolley 41 includes a rotating trolley horizontal portion 411 and a rotating trolley vertical portion 412, wherein the rotating trolley vertical portion 412 is fixedly connected to one end of the rotating trolley horizontal portion 411 close to the fork plate 13, and the lower end of the support frame 11 is fixed to the rotating trolley horizontal portion 411; the rotating mechanism 4 also includes a transmission mechanism, such as Figure 3 As shown, the transmission mechanism includes a gear 43, an inner plate 44, a slewing bearing 45 and an outer plate 46. The slewing bearing 45 includes an inner ring 451, an outer ring 452 and a rolling body 453 arranged between the inner ring and the outer ring. The inner ring 451 is fixedly connected to the upper surface of the traveling trolley 31 through the inner plate 44, and the outer ring 452 is fixedly connected to the lower surface of the horizontal part 411 of the rotating trolley through the outer plate 46. The gear 43 is fixed on the output shaft of the rotating servo reduction motor 42 and the gear 43 is meshed with the outer ring 452. The rotating mechanism 4 enables the rotating trolley 41 to drive the forklift frame 1 to rotate within a 360° angle range, and can rotate in both clockwise and counterclockwise directions.

[0038] As a preferred embodiment, the rotary rail forklift further includes a guide limiting mechanism 5, such as Figure 5 and 6 As shown, the guide and limiting mechanism includes at least two pairs of forklift bearings 51 and at least two pairs of bolt-type bearings 52. In this embodiment, the forklift bearings 51 are preferably five pairs and the bolt-type bearings 52 are three pairs. The forklift bearings 51 are arranged between the forklift frame 12 and the vertical part 412 of the rotating trolley. The axial direction of the forklift bearings 51 is parallel to the ground and perpendicular to the direction of the fork plate 13. The forklift bearings 51 are used for the up and down guidance of the forklift frame 12 and also have a certain bearing capacity. The bolt-type bearings 52 are fixed on the channel steel 121 of the forklift frame 12 and are located in the groove of the channel steel 121. The axial direction of the bolt-type bearings 52 is parallel to the ground and parallel to the direction of the fork plate 13. The bolt-type bearings 52 are used for left and right limiting.

[0039] Furthermore, if Figure 1 and 2 As shown, a plurality of counterweights 6 are provided on the horizontal portion 411 of the rotating trolley and are placed at an end away from the fork plate 13 . The number of the counterweights 6 can be selected according to actual needs.

[0040] In order to enhance the rigidity of the forklift frame, Figure 1 and 2As shown, the forklift frame 1 further includes an auxiliary frame 14 , which is a rectangular frame fixedly connected to the lower portion of the forklift frame 12 and located on the side opposite to the mounting fork plate 13 .

[0041] The working principle of the rotary rail forklift described in this embodiment:

[0042] When in use, the rotary rail forklift is placed on the rail in the factory, that is, the driving wheel 33 and the driven wheel 34 are placed on the rail matching the rail forklift. When the rail forklift needs to move forward or backward, the driving wheel 33 is driven to rotate by the travel servo reduction motor 32, thereby driving the driven wheel 34 to rotate; when it needs to rotate, the gear 43 is driven to rotate by the rotating servo reduction motor 42, thereby driving the rotating trolley 41 to rotate, and then driving the forklift frame 1 to rotate as a whole, so that the goods on the fork plate 13 are transferred to the target position; when it needs to be lifted or lowered, the forklift frame 12 is driven to rise or fall by the electric cylinder 21, thereby driving the goods on the fork plate to move up and down through the fork plate 13.

[0043] In addition to the forward and backward functions of ordinary rail forklifts, the rotary rail forklift described in this embodiment can also rotate 360°, so that lifting operations in all directions can be completed by one machine, solving the problem of difficult process layout and large plant area. In addition, in this embodiment, the travel servo reduction motor 32, the rotation servo reduction motor 42 and the electric cylinder 21 are all servo-controlled, so that the forward and backward travel distance is accurately controlled, the rotation angle is accurately controlled, and the up and down lifting distance is also accurately controllable.

[0044] The above only describes the basic principles and preferred embodiments of the present invention. Those skilled in the art may make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of the present invention.

Claims

1. A rotary rail forklift, characterized in that: At least: A forklift frame (1), the forklift frame comprising a support frame (11), a forklift frame (12), and at least one layer of fork plates (13) fixedly connected to the forklift frame; A lifting mechanism (2) for driving the forklift frame (12) to move up and down; A walking mechanism (3), the walking mechanism comprising a walking trolley (31) and a walking servo reduction motor (32) and walking wheels arranged on the walking trolley; and, A rotating mechanism (4), the rotating mechanism comprising a rotating trolley (41) and a rotating servo reduction motor (42), the rotating trolley (41) being arranged above the traveling trolley (31) and being rotatable relative to the traveling trolley (31) under the drive of the rotating servo reduction motor (42); The lower end of the support frame (11) is fixed on the rotating trolley (41), the upper end of the lifting mechanism (2) is fixedly connected to the forklift frame (12), and the lower end is fixedly connected to the rotating trolley (41); The rotating trolley (41) comprises a rotating trolley horizontal portion (411) and a rotating trolley vertical portion (412), wherein the rotating trolley vertical portion (412) is fixedly connected to an end of the rotating trolley horizontal portion (411) close to the fork plate (13); The rotating mechanism (4) further comprises a transmission mechanism, the transmission mechanism comprising a gear (43), an inner disk (44), a slewing bearing (45) and an outer disk (46); the slewing bearing (45) comprises an inner ring (451), an outer ring (452) and a rolling body (453) arranged between the inner ring and the outer ring; the inner ring (451) is fixedly connected to the upper surface of the traveling trolley (31) via the inner disk (44); the outer ring (452) is fixedly connected to the lower surface of the horizontal part (411) of the rotating trolley via the outer disk (46); the gear (43) is fixed to the output shaft of the rotating servo reduction motor (42) and the gear (43) is meshed with the outer ring (452); The invention also comprises a guide and limit mechanism (5), wherein the guide and limit mechanism comprises at least two pairs of forklift bearings (51) and at least two pairs of bolt-type bearings (52), wherein the forklift bearings (51) are arranged between the forklift frame (12) and the vertical portion (412) of the rotating trolley, wherein the axial direction of the forklift bearings (51) is parallel to the ground and perpendicular to the direction of the fork plate (13), and the bolt-type bearings (52) are fixed to the channel steel (121) of the forklift frame (12), wherein the axial direction of the bolt-type bearings (52) is parallel to the ground and parallel to the direction of the fork plate (13).

2. The rotary rail forklift according to claim 1, characterized in that: The lifting mechanism (2) comprises an electric cylinder (21), an upper electric cylinder mounting seat (22) and a lower electric cylinder mounting seat (23); the upper end of the electric cylinder (21) is fixedly connected to the forklift frame (12) via the upper electric cylinder mounting seat (22), and the lower end of the electric cylinder (21) is fixedly connected to the vertical portion (412) of the rotating trolley via the lower electric cylinder mounting seat (23).

3. The rotary rail forklift according to claim 1, characterized in that: Inverted U-shaped frames (311) are symmetrically provided on both sides of the traveling trolley (31); the traveling wheels include a pair of driving wheels (33) and at least one pair of driven wheels (34); the driving wheels (33) are connected to the output shaft of the traveling servo reduction motor (32) via a chain coupling (35); and the driving wheels (33) and the driven wheels (34) are both arranged in the inverted U-shaped frame (311).

4. The rotary rail forklift according to claim 1, characterized in that: A plurality of counterweights (6) are provided on the horizontal portion (411) of the rotating trolley, and the counterweights are placed at an end away from the fork plate (13).

5. The rotary rail forklift according to any one of claims 1 to 4, characterized in that: The forklift frame (1) further comprises an auxiliary frame (14), wherein the auxiliary frame (14) is fixedly connected to the lower part of the forklift frame (12) and is located on a side opposite to the mounting fork plate (13).

6. The rotary rail forklift according to claim 1, characterized in that: The fork plate (13) is detachably fixedly connected to the forklift frame (12).

7. The rotary rail forklift according to claim 1, characterized in that: The fork plate (13) is of a multi-tooth type.

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