A stacking type unmanned forklift with cargo adjustment function

Abstract

The invention discloses a stacking type unmanned forklift with a cargo adjustment function, comprising a vehicle body, a vehicle frame, a lifting seat and a pair of cargo forks fixedly mounted on the lifting seat, the cargo forks being used for loading cargo; a detection component is mounted on the cargo fork, the detection component comprises a No. 1 through slot penetrating through the lifting seat, a detection wheel is rotatably arranged at the bottom of the No. 1 through slot, the detection wheel is connected to an output shaft through a transmission structure, so that when the detection wheel rotates, the output shaft is synchronously driven to rotate, the output shaft is connected to an encoder, the encoder feeds back rotation data to a control terminal installed in the vehicle body, and is used for feedback of tilt caused by outward movement of one side of the cargo, thereby achieving the function of real-time monitoring of the cargo state, so that the cargo can be adjusted in time; the transmission structure is a one-way transmission, so that the output shaft can be driven to rotate only when the cargo slides outward, thereby avoiding interference and making the state monitoring more accurate.

Description

Technical Field

[0001] The present invention relates to the field of unmanned forklifts, and in particular to a stacking type unmanned forklift with a cargo adjustment function. Background Art

[0002] Unmanned forklift is a new type of transportation tool, which plays a very important role in warehousing, freight, logistics and other fields. Unmanned forklifts are divided into stacking type, handling type, counterbalanced heavy type and omnidirectional type according to their functions. Different types of unmanned forklifts can meet different working conditions. Among them, stacking type unmanned forklift is the most commonly used category, which can effectively organize the goods and save space.

[0003] When existing stacking unmanned forklifts are transporting lighter goods, the goods on the forks are often prone to tilting to one side due to collisions between goods or collisions with other objects or the impact of their own acceleration, which poses a hidden danger in transportation and also causes troubles for subsequent stacking work. Summary of the invention

[0004] The object of the present invention is to provide a stacking type unmanned forklift with a cargo adjustment function, so as to overcome the above-mentioned defects in the prior art.

[0005] According to the present invention, a stacking type unmanned forklift with cargo adjustment function comprises a vehicle body, a vehicle frame, a lifting seat and a pair of cargo forks fixedly mounted on the lifting seat, the cargo forks are used to load cargo; a detection assembly is mounted on the cargo forks, the detection assembly comprises a No. 1 through slot extending through the lifting seat, a detection wheel is rotatably arranged at the bottom of the No. 1 through slot, the detection wheel is connected to an output shaft through a transmission structure, so that when the detection wheel rotates, the output shaft is synchronously driven to rotate, the output shaft is connected to an encoder, and the encoder is used to detect the rotation angle of the output shaft;

[0006] A lifting component is provided on one side of the fork to drive the detection wheel, the output shaft and the encoder to rise and fall synchronously. When the lifting component controls the detection wheel to rise, the top of the detection wheel can pass through the No. 1 through slot and fit with the bottom of the cargo. When the cargo moves outward on one side and tilts, the cargo drives the detection wheel to rotate, and the detection wheel drives the output shaft to rotate together through the transmission structure. The encoder feeds back the rotation data to the control terminal installed in the vehicle body, which is used for feedback of the tilt caused by the outward movement of one side of the cargo.

[0007] The transmission structure between the detection wheel and the output shaft is designed as a one-way transmission, so that the output shaft can be driven to rotate only when the goods slide outwards.

[0008] Preferably, the transmission structure includes a ratchet housing fixed to the output shaft, a ratchet is arranged in the ratchet housing, a pawl used in conjunction with the ratchet housing is installed on the ratchet, an input shaft is fixed to the ratchet, the input shaft passes through the ratchet housing, a first pulley is fixed to the input shaft, the first pulley is connected to a second pulley through a belt, the second pulley is fixed to the rotating shaft, and the detection wheel is also fixed to the rotating shaft.

[0009] Preferably, the lifting assembly includes an electric push rod No. 1 fixed to the bottom of the lifting seat and at least one sleeve, the electric push rod No. 1 controls a telescopic rod No. 1, the sleeve is slidably matched with a guide rod, the guide rod and the bottom of the telescopic rod No. 1 are fixed to the base, one end of the input shaft is rotatably set on the base, the encoder is fixed on the base, a support arm is fixed to one side of the base, and one end of the rotating shaft is rotatably set on the support arm.

[0010] Preferably, the function of adjusting the cargo position is realized by a cargo pushing assembly installed on the cargo fork, and the cargo pushing assembly is composed of a displacement control assembly and an adjustment assembly.

[0011] Preferably, the adjustment assembly includes a No. 2 through slot opened at the end of the fork and passing through the fork, a protrusion fixed to the bottom of the fork is symmetrically provided at the bottom of the No. 2 through slot, a push plate is abutted against the bottom of the protrusion, the push plate is slidably mounted on the support plate, the support plate is provided with at least one slide slot toward the position of the push plate, a slider fixedly connected to the push plate is slidably mounted in the slide slot, the slider is fixed to the inner wall of the slide slot by a No. 1 spring, a push block is fixed on the push plate, the push block is aligned with the No. 2 through slot, the No. 1 spring is in a stretched state, when the push plate is separated from the protrusion along with the support plate, the No. 1 spring will reset, drive the push plate to move and finally drive the push block on the push plate to extend out of the No. 2 through slot, and the push block pushes the tilted goods to reset as the support plate continues to move.

[0012] Preferably, the displacement control assembly includes a load-bearing seat fixed to the bottom of the fork, a No. 2 electric push rod is installed on the load-bearing seat, the No. 2 electric push rod controls a No. 2 telescopic rod, a moving plate is fixed at the end of the No. 2 telescopic rod, guide bars are symmetrically fixed on the moving plate, the guide bars pass through the limit plate and are slidably connected to the limit plate, the limit plate is fixed on the fork, a No. 2 spring is fixedly connected between the moving plate and the limit plate, the ends of the guide bars are fixed to the support plate, and when the No. 2 electric push rod is started, it will control the extension and retraction of the No. 2 telescopic rod, thereby driving the support plate to move.

[0013] Preferably, the upper surface of the push block is located below the upper surface of the fork, and the protrusion is designed as an inclined surface, which helps the push plate to descend and reset along the inclined surface of the protrusion.

[0014] Preferably, a photoelectric sensor is installed on the inner wall of the No. 1 through slot, and the photoelectric sensor faces the top of the fork to detect whether there is cargo on the top of the fork.

[0015] Preferably, the control terminal is used to receive information feedback from the photoelectric sensor and the encoder, and control the operation of the second electric push rod and the first electric push rod.

[0016] The beneficial effects of the present invention are:

[0017] A lifting assembly is provided on one side of the fork, which controls the detection wheel to rise and fit the bottom of the cargo. When the cargo moves outward on one side and causes tilt, the cargo will drive the detection wheel to rotate, and the detection wheel will drive the output shaft to rotate through the transmission structure. The encoder feeds back the rotation data to the control terminal installed in the vehicle body, which is used for feedback of the tilt caused by the outward movement of one side of the cargo, thereby achieving the function of real-time monitoring of the cargo status, so that the cargo can be adjusted in time.

[0018] The transmission structure is designed as a one-way transmission, so that the output shaft can only be driven to rotate when the goods slide outward, thus avoiding interference and making status monitoring more accurate.

[0019] A No. 2 through slot is provided on the cargo fork, and a push block is arranged in the No. 2 through slot. The push block extends out of the No. 2 through slot and moves to push the cargo, so that the position of the cargo can be adjusted.

[0020] The push block is fixed on the push plate, and the push plate is slidably arranged on the support plate through a No. 1 spring, so that when encountering too long goods, the push block will not cause obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a first schematic diagram of the appearance of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure at the lifting seat;

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of point A;

[0024] Figure 4 It is a schematic diagram of the rear side of the lifting seat;

[0025] Figure 5 yes Figure 4 An enlarged schematic diagram of point B;

[0026] Figure 6 It is a side view schematic diagram of the lifting seat;

[0027] Figure 7 yes Figure 6 An enlarged schematic diagram of point C;

[0028] Figure 8 yes Figure 6 An enlarged schematic diagram of point D;

[0029] Fig. 9 It is a bottom schematic diagram of the lifting seat;

[0030] Fig.10 yes Fig. 9 An enlarged schematic diagram of point E;

[0031] Fig.11 It is a schematic diagram of the internal structure of the ratchet housing.

[0032] In the figure: 11, vehicle body; 12, vehicle frame; 13, lifting seat; 14, fork; 15, No. 2 through slot; 16, No. 1 through slot; 17, detection wheel; 18, load-bearing seat; 19, No. 2 electric push rod; 20, No. 2 telescopic rod; 21, guide bar; 22, support plate; 23, bump; 24, push plate; 25, No. 2 pulley; 26, support arm; 27, base; 28, guide rod; 29, No. 1 telescopic rod; 30, No. 1 Electric push rod; 31. sleeve; 32. No. 2 spring; 33. limit plate; 34. input shaft; 35. belt; 36. ratchet housing; 37. output shaft; 38. encoder; 39. No. 1 pulley; 40. push block; 41. No. 1 spring; 42. slide groove; 43. slider; 44. moving plate; 45. pawl; 46. ratchet; 49. rotating shaft; 50. detection component; 51. photoelectric sensor; 60. pushing component. DETAILED DESCRIPTION

[0033] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe a stacking type unmanned forklift with a cargo adjustment function or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the stacking type unmanned forklift with a cargo adjustment function are described in detail below:

[0034] Reference Figure 1-Figure 11 , a stacking type unmanned forklift with cargo adjustment function, comprising a vehicle body 11, a vehicle frame 12, a lifting seat 13 and a pair of cargo forks 14 fixedly mounted on the lifting seat 13, the cargo forks 14 being used for loading cargo;

[0035] When the lighter cargo on the cargo fork 14 is transported, it is often easy to tilt to one side due to the collision between cargoes or the collision of other objects on the cargoes or the influence of its own acceleration;

[0036] To solve this problem, it is necessary to have a function of detecting the state of the cargo on the cargo fork 14 and a function of adjusting the position of the cargo;

[0037] The detection of the cargo state is achieved by a detection assembly 50 installed on each of the cargo forks 14. Specifically, the detection assembly 50 includes a No. 1 through slot 16 that penetrates the lifting seat 13. A detection wheel 17 is rotatably provided at the bottom of the No. 1 through slot 16. The detection wheel 17 is connected to the output shaft 37 through a transmission structure, so that when the detection wheel 17 rotates, it will synchronously drive the output shaft 37 to rotate. The output shaft 37 is connected to an encoder 38, and the encoder 38 is used to detect the rotation angle of the output shaft 37.

[0038] Furthermore, a lifting component is provided on one side of the fork 14 for driving the detection wheel 17, the output shaft 37 and the encoder 38 to rise and fall synchronously. When the lifting component controls the detection wheel 17 to rise, the top of the detection wheel 17 can pass through the No. 1 through slot 16 and fit with the bottom of the cargo (it will fit only during cargo transportation, not during cargo loading and unloading, and is coordinated and controlled by the lifting component). When the cargo moves outward on one side and tilts, the cargo will drive the detection wheel 17 to rotate, and the detection wheel 17 will drive the output shaft 37 to rotate together through the transmission structure. The encoder 38 will feed back the rotation data to the control terminal installed in the vehicle body 11, which is used for feedback of the cargo moving outward on one side and tilting.

[0039] However, in actual use, the goods may move inward due to sudden braking, etc., and the detection wheel 17 may also rotate at this time. However, the rotation of the detection wheel 17 is not caused by the tilt of the goods. Therefore, it is hoped that the encoder 38 will not be affected. Based on this, the transmission structure between the detection wheel 17 and the output shaft 37 is designed as a one-way transmission, so that the output shaft 37 can be driven to rotate only when the goods slide outward.

[0040] Specifically, the transmission structure includes a ratchet housing 36 fixed to the output shaft 37, a ratchet 46 is arranged in the ratchet housing 36, a pawl 45 used in conjunction with the ratchet housing 36 is installed on the ratchet 46, an input shaft 34 is fixed to the ratchet 46, the input shaft 34 passes through the ratchet housing 36, a first pulley 39 is fixed to the input shaft 34, the first pulley 39 is driven by a second pulley 25 through a belt 35, the second pulley 25 is fixed on the rotating shaft 49, the detection wheel 17 is also fixed on the rotating shaft 49, and the goods will drive the detection wheel 17 to rotate when moving outward, and the detection wheel 17 drives the coaxial second pulley 25 Rotate, the No. 1 pulley 39 is driven to rotate through the transmission of the belt 35, the No. 1 pulley 39 drives the input shaft 34 to rotate, and the input shaft 34 drives the pawl 45 to rotate to drive the ratchet housing 36 to rotate, and finally drives the output shaft 37 to rotate; when the goods move inward, the detection wheel 17 will also be driven to rotate, and the detection wheel 17 drives the coaxial No. 2 pulley 25 to rotate, and the No. 1 pulley 39 is driven to rotate through the transmission of the belt 35, and the No. 1 pulley 39 drives the input shaft 34 to rotate, and the input shaft 34 drives the pawl 45 to rotate without driving the ratchet housing 36 to rotate, and finally does not drive the output shaft 37 to rotate.

[0041] Advantageously, the lifting assembly includes an electric push rod 30 fixed to the bottom of the lifting seat 13 and at least one sleeve 31, the electric push rod 30 controls a telescopic rod 29, the sleeve 31 is slidably matched with a guide rod 28, the guide rod 28 and the bottom of the telescopic rod 29 are both fixed on the base 27, one end of the input shaft 34 is rotatably set on the base 27, the encoder 38 is fixed on the base 27, a support arm 26 is fixed to one side of the base 27, one end of the rotating shaft 49 is rotatably set on the support arm 26, the operation of the electric push rod 30 is controlled by the control terminal, the electric push rod 30 controls the extension and retraction of the telescopic rod 29 to control the lifting and lowering of the base 27, and the sleeve 31 and the guide rod 28 play a guiding role.

[0042] The function of adjusting the cargo position is realized by a cargo pushing assembly 60 installed on the cargo fork 14, and the cargo pushing assembly 60 is composed of a displacement control assembly and an adjustment assembly;

[0043] The adjustment assembly includes a No. 2 through slot 15 which is opened at the end of the fork 14 and passes through the fork 14. A protrusion 23 fixed to the bottom of the fork 14 is symmetrically arranged at the bottom of the No. 2 through slot 15. A push plate 24 is abutted against the bottom of the protrusion 23. The push plate 24 is slidably installed on the support plate 22. The support plate 22 has at least one slide groove 42 opened toward the position of the push plate 24. A slider 43 fixedly connected to the push plate 24 is slidably installed in the slide groove 42. The slider 43 is slidably installed with the slide groove The inner wall of the push plate 24 is fixed by a No. 1 spring 41, a push block 40 is fixed on the push plate 24, the push block 40 is aligned with the No. 2 through slot 15, the No. 1 spring 41 is in a stretched state, when the push plate 24 is separated from the protrusion 23 along with the support plate 22, the No. 1 spring 41 will reset, drive the push plate 24 to move and finally drive the push block 40 on the push plate 24 to extend out of the No. 2 through slot 15, the push block 40 continues to move along with the support plate 22 to push the tilted goods to reset;

[0044] The displacement control component is used to drive the movement of the adjustment component, and the displacement control component includes a load-bearing seat 18 fixed at the bottom of the fork 14, and a No. 2 electric push rod 19 is installed on the load-bearing seat 18. The No. 2 electric push rod 19 controls a No. 2 telescopic rod 20, and a moving piece 44 is fixed at the end of the No. 2 telescopic rod 20. A guide bar 21 is symmetrically fixed on the moving piece 44, and the guide bar 21 passes through a limit plate 33 and is slidably connected to the limit plate 33. The limit plate 33 is fixed on the fork 14, and a No. 2 spring 32 is fixedly connected between the moving piece 44 and the limit plate 33. The ends of the guide bars 21 are fixed on the support plate 22. After the No. 2 electric push rod 19 is started, it will control the extension and retraction of the No. 2 telescopic rod 20, thereby driving the support plate 22 to move.

[0045] In order not to interfere with the normal transportation of goods, the upper surface of the push block 40 is located below the upper surface of the fork 14 , and the protrusion 23 is designed as an inclined surface, which helps the push plate 24 to descend and reset along the inclined surface of the protrusion 23 .

[0046] Advantageously, a photoelectric sensor 51 is installed on the inner wall of the No. 1 through slot 16 , and the photoelectric sensor 51 faces the top of the fork 14 to detect whether there is cargo on the top of the fork 14 .

[0047] Advantageously, the control terminal is used to receive information feedback from the photoelectric sensor 51 and the encoder 38 , and control the operation of the second electric push rod 19 and the first electric push rod 30 .

[0048] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A stacking type unmanned forklift with a cargo adjustment function, comprising a vehicle body (11), a vehicle frame (12), a lifting seat (13), and a pair of cargo forks (14) fixedly mounted on the lifting seat (13), wherein the cargo forks (14) are used to load cargo, and characterized in that: A detection assembly (50) is installed on the fork (14), the detection assembly (50) comprising a No. 1 through slot (16) extending through the lifting seat (13), a detection wheel (17) being rotatably arranged at the bottom of the No. 1 through slot (16), the detection wheel (17) being connected to the output shaft (37) via a transmission structure, so that when the detection wheel (17) rotates, the output shaft (37) is synchronously driven to rotate, the output shaft (37) is connected to an encoder (38), and the encoder (38) is used to detect the rotation angle of the output shaft (37); A lifting component is provided on one side of the cargo fork (14) for driving the detection wheel (17), the output shaft (37) and the encoder (38) to rise and fall synchronously. When the lifting component controls the detection wheel (17) to rise, the top of the detection wheel (17) can pass through the No. 1 through slot (16) and fit with the bottom of the cargo. When the cargo moves outward on one side and tilts, the cargo drives the detection wheel (17) to rotate. The detection wheel (17) drives the output shaft (37) to rotate together through the transmission structure. The encoder (38) feeds back the rotation data to the control terminal installed in the vehicle body (11) for feedback of the cargo moving outward on one side and tilting. The transmission structure between the detection wheel (17) and the output shaft (37) is designed to be a one-way transmission, so that the output shaft (37) can be driven to rotate only when the goods slide outwards; The function of adjusting the position of the cargo is achieved by means of a cargo pushing assembly (60) installed on the cargo fork (14), wherein the cargo pushing assembly (60) is composed of a displacement control assembly and an adjustment assembly; The adjustment assembly comprises a No. 2 through slot (15) formed at the end of the fork (14) and penetrating the fork (14); a protrusion (23) fixed to the bottom of the fork (14) is symmetrically provided at the bottom of the No. 2 through slot (15); a push plate (24) is abutted against the bottom of the protrusion (23); the push plate (24) is slidably mounted on a support plate (22); the support plate (22) is provided with at least one slide groove (42) toward the position of the push plate (24); a slider (43) fixedly connected to the push plate (24) is slidably mounted in the slide groove (42); the slider (43) is axially coupled to the slide groove The inner wall (42) is fixed by a No. 1 spring (41), a push block (40) is fixed on the push plate (24), the push block (40) is aligned with the No. 2 through slot (15), the No. 1 spring (41) is in a stretched state, when the push plate (24) is separated from the protrusion (23) along with the support plate (22), the No. 1 spring (41) will reset, drive the push plate (24) to move and finally drive the push block (40) on the push plate (24) to extend out of the No. 2 through slot (15), the push block (40) will push the tilted cargo to reset as the support plate (22) continues to move; The displacement control assembly comprises a load-bearing seat (18) fixed at the bottom of the fork (14), a No. 2 electric push rod (19) being installed on the load-bearing seat (18), the No. 2 electric push rod (19) controlling a No. 2 telescopic rod (20), a moving plate (44) being fixed at the end of the No. 2 telescopic rod (20), a guide bar (21) being symmetrically fixed on the moving plate (44), the guide bar (21) passing through a limit plate (33) and being slidably connected to the limit plate (33), the limit plate (33) being fixed on the fork (14), a No. 2 spring (32) being fixedly connected between the moving plate (44) and the limit plate (33), the ends of the guide bars (21) being fixed on the support plate (22), and the No. 2 electric push rod (19) controlling the No. 2 telescopic rod (20) to extend and retract after being started, thereby driving the support plate (22) to move.

2. The stacking type unmanned forklift with cargo adjustment function according to claim 1, characterized in that: The transmission structure comprises a ratchet housing (36) fixed to the output shaft (37), a ratchet (46) arranged in the ratchet housing (36), a ratchet pawl (45) for use with the ratchet housing (36) mounted on the ratchet (46), an input shaft (34) fixed to the ratchet (46), the input shaft (34) passing through the ratchet housing (36), a first pulley (39) fixed to the input shaft (34), the first pulley (39) transmitting a second pulley (25) via a belt (35), the second pulley (25) fixed to a rotating shaft (49), and the detection wheel (17) also fixed to the rotating shaft (49).

3. The stacking type unmanned forklift with cargo adjustment function according to claim 2, characterized in that: The lifting assembly comprises a No. 1 electric push rod (30) fixed to the bottom of the lifting seat (13) and at least one sleeve (31); the No. 1 electric push rod (30) controls a No. 1 telescopic rod (29); the sleeve (31) is slidably matched with a guide rod (28); the guide rod (28) and the bottom of the No. 1 telescopic rod (29) are both fixed to a base (27); one end of the input shaft (34) is rotatably arranged on the base (27); the encoder (38) is fixed to the base (27); a support arm (26) is fixed to one side of the base (27); and one end of the rotating shaft (49) is rotatably arranged on the support arm (26).

4. The stacking type unmanned forklift with cargo adjustment function according to claim 1, characterized in that: The upper surface of the push block (40) is located below the upper surface of the fork (14), and the protrusion (23) is designed as an inclined surface, which helps the push plate (24) to descend and reset along the inclined surface of the protrusion (23).

5. The stacking type unmanned forklift with cargo adjustment function according to claim 4, characterized in that: A photoelectric sensor (51) is installed on the inner wall of the No. 1 through slot (16), and the photoelectric sensor (51) faces the top of the fork (14) and is used to detect whether there is cargo on the top of the fork (14).

6. The stacking type unmanned forklift with cargo adjustment function according to claim 5, characterized in that: The control terminal is used to receive information feedback from the photoelectric sensor (51) and the encoder (38), and to control the operation of the second electric push rod (19) and the first electric push rod (30).

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