A fork frame that can be stably lifted with multiple hoppers

Abstract

The present invention discloses a fork support capable of stably lifting with multiple hoppers, which comprises a fork support body and hoppers. The fork support body includes a pusher frame and two parallel support frames. The pusher frame is perpendicular to the support frames. A positioning device is arranged on one side of the support frame close to the pusher frame, and a limiting device is arranged on the side far from the pusher frame. The positioning device is used to keep the center positions of the discharge ports of hoppers with different specifications always consistent, and the limiting device is used to limit the hoppers on the support frames. Grooves are respectively formed at the tops of the support frames, threaded rods are movably arranged in the grooves, roller seats are sleeved on the outer sides of the threaded rods, and the tops of the roller seats are fixedly connected with threaded cylinders. By respectively arranging the positioning device and the limiting device at the front and rear ends of the support frames, the positioning device can make the center positions of the discharge ports of hoppers with different specifications loaded on the support frames always consistent, and the limiting device can limit the hoppers on the support frames. It has a wide application range, can meet the lifting of multiple hoppers, and has a simple structure, reliable operation and simple operation.

Description

Technical Field

[0001] The present invention relates to the field of fork rack devices, and particularly to a fork rack that can stably lift various hoppers. Background Art

[0002] A forklift is an industrial handling vehicle, referring to various wheeled handling vehicles for loading, unloading, stacking, and short-distance transportation of palletized goods. It is widely used in ports, stations, airports, freight yards, factory workshops, warehouses, distribution centers, etc., for loading and unloading palletized goods in ship holds, carriages, and containers, and is an essential equipment in pallet transportation and container transportation.

[0003] In actual production, the inventor needs to use a forklift to handle hoppers of different specifications and sizes, and at the same time, it is necessary to ensure that the center positions of the discharge ports of hoppers of different specifications and sizes on the forklift are always the same. Existing forklifts cannot meet this requirement. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a fork rack that can stably lift various hoppers. By respectively arranging a positioning device and a limiting device at the front and rear ends of the support frame, the positioning device can keep the center positions of the discharge ports of different specifications of hoppers loaded on the support frame always the same, and the limiting device can limit the hopper on the support frame. It has a wide application range, can meet the lifting of various hoppers, and has a simple structure, reliable operation, and simple operation.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A fork rack that can stably lift various hoppers, including a fork rack body and a hopper. The fork rack body includes a pusher frame and two parallel support frames. The pusher frame is perpendicular to the support frames. A positioning device is arranged on one side of the support frame close to the pusher frame, and a limiting device is arranged on the side away from the pusher frame. The positioning device is used to keep the center positions of the discharge ports of different specifications of hoppers always the same, and the limiting device is used to limit the hopper on the support frame. Grooves are respectively opened at the tops of the support frames. A threaded rod is movably arranged in the groove. A roller seat is sleeved outside the threaded rod. The top of the roller seat is fixedly connected with a threaded cylinder. The top of the threaded cylinder is fixedly connected with an adjustment frame. A driving rod is movably arranged in the adjustment frame. The end of the driving rod is in contact and fixed with the hopper through a suction cup. The positioning device includes a support, a rotating shaft arranged on the support, and a positioning rod assembly rotatably arranged on the rotating shaft. The positioning rod assembly includes a first positioning rod and a second positioning rod, and both are L-shaped rods. The limiting device includes a fixing block and a limiting pin arranged at the end of the support frame. A limiting hole for inserting the limiting pin is arranged on the fixing block. A first limiting groove and a second limiting groove are respectively arranged on both sides of the limiting hole. A limiting protrusion adapted to both the first limiting groove and the second limiting groove is arranged on one side of the limiting pin.

[0006] As a preferred technical solution of the present invention, a driving motor is fixed to the bottom of the ends of the two groups of the support frames, the output end of the driving motor is fixedly connected to a threaded rod, a threaded structure adapted to the threaded rod is provided in the middle of the roller seat, and the inside of the threaded cylinder is fixedly engaged with a rotating shaft. A hole groove structure is provided in the middle of the top end of the rotating shaft, and a rotating rod is arranged in the hole groove structure. The rotating rod is movably connected to the bottom end of the adjusting frame through a bearing structure.

[0007] As a preferred technical solution of the present invention, both of the two groups of adjusting frames have a radian greater than π / 2, and sliding grooves are provided in the middle of both of them. The driving rod is clamped in the sliding groove through a nut with a diameter larger than the width of the sliding groove, and a hand wheel is fixed to the outer end of the driving rod.

[0008] As a preferred technical solution of the present invention, the positioning rod assembly further includes a tetrafluoroethylene sleeve sleeved on the rotating shaft. The tetrafluoroethylene sleeve includes a sleeve part and a limiting part. A limiting groove adapted to the limiting part is provided on one side of the support. The first positioning rod and the second positioning rod are rotatably arranged on the tetrafluoroethylene sleeve.

[0009] As a preferred technical solution of the present invention, the rotating shaft includes a head part and a rod part. A threaded section is provided at one end of the rod part away from the head part, and a fixing nut is arranged on the threaded section.

[0010] As a preferred technical solution of the present invention, the upper end surface of the fixing block is not higher than the upper end surface of the support frame. The depth of the first limiting groove is less than the depth of the second limiting groove. When the limiting protrusion is located in the first limiting groove, the top of the limiting pin is higher than the upper end surface of the support frame. When the limiting protrusion is located in the second limiting groove, the top of the limiting pin is not higher than the upper end surface of the support frame.

[0011] As a preferred technical solution of the present invention, a grasping groove is provided on the circumference of the limiting hole.

[0012] As a preferred technical solution of the present invention, elastic pads are arranged on the end faces of the first positioning rod and the second positioning rod that are in contact with the support frame.

[0013] As a preferred technical solution of the present invention, the groove is an arc-shaped round mouth groove structure, and its length is greater than three-fourths of the length of the support frame.

[0014] As a preferred technical solution of the present invention, the two groups of driving motors are of a motor structure, and one end of each of them is electrically connected to the vehicle.

[0015] Compared with the prior art, the beneficial effects that the present invention can achieve are:

[0016] 1. In the present invention, by respectively arranging a positioning device and a limiting device at the front and rear ends of the support frame, the positioning device can always keep the central positions of the discharge ports of different specifications of hoppers loaded on the support frame consistent, and the limiting device can limit the hoppers on the support frame. It has a wide range of applications, can meet the lifting of various hoppers, and has a simple structure, reliable operation, and simple operation.

[0017] 2. In the present invention, through the three groups of cooperative driving structures of the threaded rod-roller seat, threaded barrel-rotating shaft, and adjusting frame-driving rod, during use, the size can be changed according to hoppers of different sizes. First, for the threaded rod-roller seat structure at the bottom, the threaded barrel can be moved to a specified position through the roller shaft to meet the width requirements of the hopper. The threaded barrel and rotating shaft structure facilitates the user to adjust according to the different heights of the hopper. The user directly rotates the rotating shaft through the rotating rod and screws it out of the threaded barrel. Since the top adjusting frame is movably connected to the rotating shaft, the angle is not affected. After reaching the specified height, the cooperation between the adjusting frame and the driving rod can be used to make one end of the hopper contact and fix with the suction cup. The user can move the suction cup-driving rod in the chute to adapt to different planes of the hopper to achieve stable fixation. Push the handwheel to drive the driving rod and the suction cup to move. Finally, the driving rod is clamped at both ends of the adjusting frame through the nut to complete. Compared with the existing structure, this device can adapt to hoppers of various sizes and shapes, and has the effect of strengthening the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the adjusting frame of the present invention;

[0020] Figure 3 is a schematic structural diagram of the threaded barrel-rotating shaft part of the present invention;

[0021] Figure 4 is a schematic diagram of the positioning device in the present invention;

[0022] Figure 5 is a top view of the positioning device in the present invention;

[0023] Figure 6 is a partial exploded view of the positioning device in the present invention;

[0024] Figure 7 is a schematic diagram of the limiting device in the present invention;

[0025] Figure 8 is a schematic diagram of the second state of the limiting device in the present invention;

[0026] Figure 9 is a schematic diagram of the first state of the limiting device in the present invention.

[0027] Wherein: 1. Fork frame body; 2. Hopper; 3. Pusher frame; 4. Support frame; 41. Groove; 411. Threaded rod; 412. Roller seat; 413. Threaded barrel; 414. Rotating shaft; 415. Rotating rod; 42. Adjusting frame; 421. Driving rod; 422. Handwheel; 423. Suction cup; 424. Chute; 43. Driving motor; 5. Positioning device; 51. Support; 511. Limit groove; 52. Return rotating shaft; 521. Head; 522. Rod part; 523. Threaded section; 53. Positioning rod assembly; 531. First positioning rod; 532. Second positioning rod; 54. Teflon sleeve; 541. Sleeve part; 542. Limiting part; 55. Fixing nut; 56. Elastic pad; 6. Limiting device; 61. Fixed block; 611. Limit hole; 612. First limit groove; 613. Second limit groove; 62. Limit pin; 621. Limit projection; 63. Grabbing groove. Detailed implementation mode

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0029] Embodiment:

[0030] As Figures 1-9 shown, the present invention provides a hoist fork frame with multiple hoppers, including a fork frame body 1 and a hopper 2. The fork frame body 1 includes a pusher frame 3 and two parallel support frames 4. The pusher frame 3 is perpendicular to the support frame 4. A positioning device 5 is arranged on one side of the support frame 4 close to the pusher frame 3, and a limiting device 6 is arranged on the side away from the pusher frame 3. The positioning device 5 is used to keep the center position of the discharge port of different specifications of hoppers 2 always consistent, and the limiting device 6 is used to limit the hopper 2 on the support frame 4. Grooves 41 are opened at the tops of the support frames 4. A threaded rod 411 is movably arranged in the groove 41. A roller seat 412 is sleeved outside the threaded rod 411. The top of the roller seat 412 is fixedly connected to a threaded barrel 413. The top of the threaded barrel 413 is fixedly connected to an adjusting frame 42. A driving rod 421 is movably arranged in the adjusting frame 42. The end of the driving rod 421 is in contact with and fixed to the hopper 2 through a suction cup 423. The application range is wide and it can meet the lifting of multiple hoppers.

[0031] Specifically, the positioning device 5 includes a support 51, a rotating shaft 52 arranged on the support 51, and a positioning rod assembly 53 rotatably arranged on the rotating shaft 52. The positioning rod assembly 53 includes a first positioning rod 531 and a second positioning rod 532, and both are L-shaped rods. In this embodiment, the lengths of the first positioning rod 531 and the second positioning rod 532 are different. This positioning rod assembly 53 can be adapted to three different sizes of hoppers 2 in total, such as hoppers 2 with capacities of 1400L, 600L, and 400L. When the hopper with a capacity of 1400L is placed on the support frame 4, both the first positioning rod 531 and the second positioning rod 532 rotate towards the pusher frame 3 side, and one side of this hopper abuts against the side wall of the support 51; when the hopper with a capacity of 600L is placed on the support frame 4, the shorter first positioning rod 531 is flipped around the rotating shaft 52 onto the support frame 4, and one side of this hopper abuts against the first positioning rod 531. Similarly, the hopper with a capacity of 400L corresponds to the second positioning rod 532. In this way, the central positions of the discharge ports of the three-capacity hoppers are always the same. The structure is simple, the work is reliable, and the operation is simple.

[0032] Furthermore, the positioning rod assembly 53 further includes a polytetrafluoroethylene sleeve 54 sleeved on the rotating shaft 52. The polytetrafluoroethylene sleeve 54 includes a sleeve portion 541 and a limiting portion 542. The polytetrafluoroethylene sleeve 54 is made of polytetrafluoroethylene and has excellent properties such as high and low temperature resistance, low friction and wear, chemical corrosion resistance, high electrical strength, non-sticking, weather resistance, etc., and good physical and mechanical properties; it can ensure that the two positioning rods can rotate flexibly and reduce friction; a limiting groove 511 adapted to the limiting portion 542 is arranged on one side of the support 51, and the first positioning rod 531 and the second positioning rod 532 are rotatably arranged on the polytetrafluoroethylene sleeve 54; among them, the limiting portion 542 can be a polygonal flange. After it is embedded in the limiting groove 511, the polytetrafluoroethylene sleeve 54 will not rotate randomly and can serve as the rotating shaft of the first positioning rod 531 and the second positioning rod 532.

[0033] Furthermore, the rotating shaft 52 includes a head portion 521 and a rod portion 522. A threaded section 523 is arranged at one end of the rod portion 522 away from the head portion 521. A fixing nut 55 is arranged on the threaded section 523. The rotating shaft 52 is threadedly locked with the fixing nut 55 to fix the polytetrafluoroethylene sleeve 54 on the support 51, and this structure is convenient for disassembly and assembly, and more different-sized positioning rods can be replaced to adapt to more specifications of hoppers 2.

[0034] Next, at the bottom ends of the two sets of support frames 4, driving motors 43 are fixed. The output ends of the driving motors 43 are fixedly connected to threaded rods 411. In the middle of the roller seats 412, a threaded structure adapted to the threaded rods 411 is provided. The inside of the threaded cylinder 413 is fixedly engaged with the rotating shaft 414. In the middle of the top end of the rotating shaft 414, a hole groove structure is provided, and a rotating rod 415 is arranged in the hole groove structure. The rotating rod 415 is movably connected to the bottom end of the adjusting frame 42 through a bearing structure; both of the two sets of adjusting frames 42 have a radian greater than π / 2, and a sliding groove 424 is provided in the middle of each of them. The driving rod 421 is clamped in the sliding groove 424 through a nut with a diameter larger than the width of the sliding groove 424. At the outer end of the driving rod 421, a handwheel 422 is fixed. Through the three sets of cooperating driving structures of the threaded rod 411 - roller seat 412, threaded cylinder 413 - rotating shaft 414, and adjusting frame 42 - driving rod 421, during use, the size can be changed according to hoppers 2 of different sizes. First, with the threaded rod 411 - roller seat 412 structure at the bottom end, the threaded cylinder 413 can be moved to a specified position through the roller shaft to meet the width requirement of the hopper 2. The threaded cylinder 413 and rotating shaft 414 structure facilitates the user to adjust according to the different heights of the hopper 2. The user directly rotates the rotating shaft 414 through the rotating rod 415 and screws it out of the threaded cylinder 413. Since the top adjusting frame 42 is movably connected to the rotating shaft 414, the angle is not affected. After reaching the specified height, the cooperation between the adjusting frame 42 and the driving rod 421 can be used to make one end of the hopper 2 contact and fix with the suction cup 423. The user can move the suction cup 423 - driving rod 421 in the sliding groove 424 to adapt to different planes of the hopper 2 to achieve stable fixation. Push the handwheel 422 to drive the driving rod 421 and the suction cup 423 to move. Finally, clamp the driving rod 421 at both ends of the adjusting frame 42 through the nut to complete. Compared with the existing structure, this device can adapt to hoppers 2 of various sizes and shapes, playing the role of strengthening the clamping effect.

[0035] Specifically, the limiting device 6 includes a fixing block 61 and a limiting pin 62 provided at the end of the support frame 4. The upper end surface of the fixing block 61 is not higher than the upper end surface of the support frame 4, which is convenient for placing the hopper 2 on the support frame 4. A limiting hole 611 for inserting the limiting pin 62 is provided on the fixing block 61. A first limiting groove 612 and a second limiting groove 613 are respectively provided on both sides of the limiting hole 611. The depth of the first limiting groove 612 is less than that of the second limiting groove 613. A limiting protrusion 621 adapted to both the first limiting groove 612 and the second limiting groove 613 is provided on one side of the limiting pin 62. When the limiting protrusion 621 is located in the first limiting groove 612, the top of the limiting pin 62 is higher than the upper end surface of the support frame 4. At this time, it is in the first state and the hopper will not slide out of the support frame 4; when the limiting protrusion 621 is located in the second limiting groove 613, the top of the limiting pin 62 is not higher than the upper end surface of the support frame 4. At this time, it is in the second state and the hopper can be pushed into the support frame 4.

[0036] Further, a grasping groove 63 is provided around the circumference of the limiting hole 611, which is convenient for reaching in with the hand to adjust the limiting pin 62.

[0037] Further, elastic pads 56 are provided on the end faces of the first positioning rod 531 and the second positioning rod 532 that are in contact with the support frame 4, to prevent the first positioning rod 531 and the second positioning rod 532 from flipping and colliding with the support frame 4 during long-term use, resulting in damage to the positioning rods and the support frame 4, and extending the service life.

[0038] Finally, the groove 41 is an arc-shaped round opening groove structure, and its length is greater than three-quarters of the length of the support frame 4. The arc-shaped round opening groove structure facilitates the movement of the roller seat 412, and the longer groove 41 facilitates adapting to the clamping effect of a hopper 2 with a larger size.

[0039] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0040] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A fork frame that can be stably lifted with multiple hoppers, comprising a fork frame body (1) and a hopper (2), characterized in that: The fork support body (1) includes a pushing hand support (3) and two parallel support frames (4). The pushing hand support (3) is perpendicular to the support frame (4). A positioning device (5) is arranged on one side of the support frame (4) close to the pushing hand support (3), and a limiting device (6) is arranged on the side away from the pushing hand support (3). The positioning device (5) is used to keep the central positions of the discharge ports of hoppers (2) with different specifications always consistent, and the limiting device (6) is used to limit the hopper (2) on the support frame (4). Grooves (41) are formed at the tops of both groups of the support frames (4). A threaded rod (411) is movably arranged in each groove (41). A roller seat (412) is sleeved outside the threaded rod (411). The top of the roller seat (412) is fixedly connected to a threaded cylinder (413). The top of the threaded cylinder (413) is fixedly connected to an adjusting frame (42). A driving rod (421) is movably arranged in the adjusting frame (42). The end of the driving rod (421) is in contact and fixed with the hopper (2) through a suction cup (423). The positioning device (5) includes a support (51), a rotary shaft (52) arranged on the support (51), and a positioning rod assembly (53) rotatably arranged on the rotary shaft (52). The positioning rod assembly (53) includes a first positioning rod (531) and a second positioning rod (532), and both are L-shaped rods. The limiting device (6) includes a fixed block (61) and a limiting pin (62) arranged at the end of the support frame (4). A limiting hole (611) for the limiting pin (62) to insert is arranged on the fixed block (61). A first limiting groove (612) and a second limiting groove (613) are respectively arranged on both sides of the limiting hole (611). A limiting protrusion (621) adapted to both the first limiting groove (612) and the second limiting groove (613) is arranged on one side of the limiting pin (62). The upper end surface of the fixed block (61) is not higher than the upper end surface of the support frame (4). The depth of the first limiting groove (612) is less than the depth of the second limiting groove (613). When the limiting protrusion (621) is located in the first limiting groove (612), the top of the limiting pin (62) is higher than the upper end surface of the support frame (4). When the limiting protrusion (621) is located in the second limiting groove (613), the top of the limiting pin (62) is not higher than the upper end surface of the support frame (4).

2. The forklift frame capable of stably lifting with multiple hoppers according to claim 1, characterized in that: Driving motors (43) are fixed to the bottoms of the ends of both groups of the support frames (4). The output ends of the driving motors (43) are fixedly connected to the threaded rods (411). A threaded structure adapted to the threaded rod (411) is formed in the middle of the roller seat (412). The inside of the threaded cylinder (413) is meshed and fixed with a rotating shaft (414). A hole groove structure is formed in the middle of the top of the rotating shaft (414). A rotating rod (415) is arranged in the hole groove structure. The rotating rod (415) and the bottom end of the adjusting frame (42) are movably connected through a bearing structure.

3. A fork support capable of stably lifting with multiple hoppers according to claim 1, characterized in that: Both of the two sets of the adjusting frames (42) have a radian greater than π / 2, and a chute (424) is provided in the middle thereof. The driving rod (421) is clamped in the chute (424) through a nut with a diameter larger than the width of the chute (424), and a hand wheel (422) is fixed at the outer end of the driving rod (421).

4. A fork rack capable of stably lifting with multiple hoppers according to claim 1, characterized in that: The positioning rod assembly (53) further includes a tetrafluoroethylene sleeve (54) sleeved on the rotating shaft (52). The tetrafluoroethylene sleeve (54) includes a sleeve portion (541) and a limiting portion (542). A limiting groove (511) adapted to the limiting portion (542) is provided on one side of the support (51). The first positioning rod (531) and the second positioning rod (532) are rotatably arranged on the tetrafluoroethylene sleeve (54).

5. A fork frame capable of stably lifting with multiple hoppers according to claim 1, characterized in that: The rotating shaft (52) includes a head portion (521) and a rod portion (522). A threaded section (523) is provided at one end of the rod portion (522) away from the head portion (521), and a fixing nut (55) is provided on the threaded section (523).

6. The fork frame capable of stably lifting with multiple hoppers according to claim 1, characterized in that: A grasping groove (63) is provided on the circumference of the limiting hole (611).

7. The fork lift capable of stably lifting with multiple hoppers according to claim 1, characterized in that: Elastic pads (56) are provided on the end faces of the first positioning rod (531) and the second positioning rod (532) in contact with the support frame (4).

8. A fork support capable of stably lifting with multiple hoppers as claimed in claim 1, characterized in that: The groove (41) is an arc-shaped circular opening groove structure, and its length is greater than three-quarters of the length of the support frame (4).

9. A fork frame capable of stably lifting with multiple hoppers according to claim 2, characterized in that: The two sets of driving motors (43) are motor structures, and one end of each of them is electrically connected to the vehicle.

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