Oil drum flip clamp assembly and transport forklift

Abstract

The present invention discloses an oil drum flip clamp assembly and a transport forklift, comprising a bracket that is lifted and lowered on a frame and a bracket hinged on the bracket, and further comprising: a semicircular hoop that is fixedly mounted at one end of the bracket, with clamps hinged at both ends, the two clamps and the semicircular hoop forming a hoop ring, the inner diameter of the hoop ring matching the outer diameter of the oil drum, but smaller than the outer diameter of the ribs on the outer side of the oil drum; a clamping edge assembly that is arranged at the other end of the bracket and used to clamp the edge of the discharge end of the oil drum; and a driving assembly that is arranged on the bracket and used to drive the bracket to rotate. The present invention facilitates installation on the oil drum by arranging the semicircular hoop and the clamping edge to clamp the edge of the discharge end of the oil drum through the clamping edge assembly, so that when the discharge end of the oil drum slowly rotates downward, the hoop ring provides sufficient driving force by supporting the ribs on the outer wall of the oil drum, and at the same time, the clamping edge assembly can support the downward discharge end of the oil drum, thereby preventing the oil drum from slipping during the tipping process.

Description

Technical Field

[0001] The invention relates to the technical field of oil drum turning, and in particular to an oil drum turning clamping assembly and a transport forklift. Background Art

[0002] An oil drum, which is a barrel used to hold oil, is generally made of iron or plastic in a cylindrical shape and is mainly used to transport gasoline-related materials. When the oil drum is dumped outward, it needs to be turned over. The existing oil drum turning mechanism can basically meet daily use needs, but there are still some shortcomings that need to be improved.

[0003] Patent document CN214494931U, published on October 26, 2021, discloses a small manual oil drum turning machine. The machine comprises a frame, a lifting frame, and a clamping bracket. The lifting frame is U-shaped, with the side of the lifting frame away from the opening being movably mounted on the frame via a guide rail. The frame is provided with a lifting mechanism for controlling the lifting of the lifting frame. The clamping bracket is a circular, hoop-shaped device that is reversibly mounted between the lifting frames. The lifting frame is provided with a turning mechanism for driving the clamping bracket to turn. The machine has the following advantages: high efficiency, no noise, low vibration, safe operation, reduced labor intensity, and improved work efficiency, playing a significant role in improving the economic benefits of enterprises.

[0004] As in the prior art of the above patent, a single encircling structure is used to clamp the oil drum, which easily causes the drum to slip when tipping. Therefore, an oil drum flip clamp assembly and a transport forklift are urgently needed to solve the above problem. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil drum flip clamp assembly and a transport forklift to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An oil drum flip clamp assembly includes a bracket that is lifted and lowered on a frame and a bracket hinged on the bracket. It also includes: a semicircular hoop, which is fixedly set at one end of the bracket and has clamps hinged at both ends. When the free ends of the two clamps are put together, they form a hoop for tightening on the outside of the oil drum with the semicircular hoop, and the inner diameter of the hoop matches the outer diameter of the oil drum, but is smaller than the outer diameter of the ribs on the outside of the oil drum; a clamping edge assembly, which is set at the other end of the bracket and is used to clamp the edge of the discharge end of the oil drum; and a driving assembly, which is set on the bracket and is used to drive the bracket to rotate.

[0008] Preferably, the edge clamping assembly includes a stop block fixedly mounted on the bracket, a beak block hinged on the stop block, an adjusting screw threadedly passing through the beak block in a direction away from the inner side of the bracket, and one end of the adjusting screw rests against the stop block.

[0009] Preferably, the driving assembly includes a driving rod rotatably arranged in the bracket, a worm is coaxially arranged on the driving rod, and a worm wheel meshing with the worm is coaxially connected to a rotating shaft on one side of the bracket.

[0010] A transport forklift includes the above-mentioned oil drum flip clamping assembly and a frame, wherein a support leg is provided at the lower end of the frame, and the end of the support leg is rotatably connected to a roller. A first linkage assembly is provided in the frame, and after the bracket is driven to rotate to a certain angle by the driving assembly, the rotation of the bracket is linked to the rolling of the roller through the first linkage assembly.

[0011] Preferably, the first linkage assembly includes a chain rollingly arranged in the frame and linked to the roller, the side wall of the bracket is movably connected with a guide sleeve, a linkage part is movably arranged in the guide sleeve, one end of the guide sleeve extends to the inner side surrounded by the chain and a first through groove is provided on the side wall, a latch tooth movably passing through the first through groove is provided on the linkage part, a rack is fixedly provided at one end of the linkage part close to the driving rod, a first gear matching the rack is synchronously rotated on the driving rod, the first gear can move axially, and engages with the rack after the driving rod is rotated a certain angle, and the latch tooth is engaged with the chain.

[0012] Preferably, a driving block and a sliding block are movably provided in the bracket, the driving rod is threadedly connected to the driving block, and movably passes through the sliding block, a first elastic member is connected between the driving block and the sliding block, the first gear is rotatably connected to the side of the sliding block away from the driving block, the end of the guide sleeve close to the driving rod extends in the movable range of the sliding block, the side wall of the bracket is provided with a second through groove matching the guide sleeve, and the second through groove is provided with a second elastic member that prevents the guide sleeve from driving the locking teeth to engage with the chain.

[0013] Preferably, a linkage rod is vertically movably provided on the linkage member, linkage grooves are provided on the upper and lower inner walls of the second through groove, the end of the linkage rod movably passes through the guide sleeve and is movably connected to the linkage groove, and the linkage groove includes an inclined section and a straight section.

[0014] Preferably, a balancing platform is rotatably connected to the side of the frame away from the support legs, two symmetrical universal wheels are installed at the bottom of the balancing platform, a rocker seat is rotatably provided on the frame, and the rocker seat is connected to the balancing platform through a shock absorbing unit. After the roller is linked with the chain, the rotation of the rocker seat is linked with the chain through a second linkage component.

[0015] Preferably, a fixed gear and a movable gear arranged up and down are rotatably connected in the frame, the chain is tensioned and connected to the fixed gear and the movable gear, the movable gear is linked to the roller through a pulley assembly, the rotating shaft of the movable gear is connected to the second gear which is arranged for lifting and lowering in the frame through a universal joint transmission, the rotating shaft of the rocker arm seat is coaxially connected to the third gear rotatably set in the frame, and the third gear and the second gear are arranged correspondingly up and down.

[0016] Preferably, the pulley assembly includes a transmission shaft rotatably arranged in a frame, one end of the transmission shaft is connected to a roller through a first synchronous belt, and the other end of the transmission shaft is connected to the rotating shaft of the movable gear through a second synchronous belt. A tensioning wheel is provided on the inner side of the second synchronous belt, and the tensioning wheel is connected to the frame in a radially elastic manner.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The oil drum flip clamp assembly is conveniently installed on the oil drum by arranging a hoop composed of a semicircular hoop and a clamp, and is clamped to the edge of the discharge end of the oil drum through the clamping edge assembly. As a result, when the driving assembly drives the bracket to rotate, the bracket drives the oil drum to rotate and tilt, so that the discharge end of the oil drum slowly rotates downward, the hoop provides sufficient driving force by supporting the ribs on the outer wall of the oil drum. At the same time, the clamping edge assembly can support the downward discharge end of the oil drum, avoiding the risk of the oil drum slipping during the tilting process, thereby improving the practicality of the device.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the internal structure provided by an embodiment of the present invention;

[0024] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 The embodiment of the present invention provides Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 5 A schematic diagram of a front cross-sectional structure provided by an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0028] Figure 7 A schematic diagram of a top-down cross-sectional structure provided by an embodiment of the present invention;

[0029] Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0030] Figure 9 This is a schematic diagram of the transmission structure of the second gear and the third gear provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Frame; 2. Bracket; 3. Bracket; 4. Semicircular hoop; 5. Clamp; 6. Stop block; 7. Eagle beak block; 8. Adjusting screw; 9. Drive rod; 10. Worm; 11. Worm gear; 12. Support leg; 13. Roller; 14. Chain; 15. Guide sleeve; 16. Linkage member; 17. First through slot; 18. Clamping tooth; 19. Rack; 20. First gear; 21. Drive block; 22. Sliding block; 23. First elastic member; 24. Second through slot; 25. Second elastic member; 26. Linkage rod; 27. Linkage slot; 28. Balancing table; 29. Universal wheel; 30. Rocker arm seat; 31. Shock absorber unit; 32. Fixed gear; 33. Moving gear; 34. Second gear; 35. Third gear; 36. Transmission shaft; 37. First synchronous belt; 38. Second synchronous belt; 39. Tensioner; 40. Slider. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0034] See also Figure 1-9An embodiment of the present invention provides an oil drum flip clamp assembly, which includes a bracket 2 lifted and mounted on a frame 1 and a bracket 3 hinged on the bracket 2, and further includes: a semicircular hoop 4, which is fixedly mounted at one end of the bracket 3, and has clamps 5 hinged at both ends. When the free ends of the two clamps 5 are put together, they form a hoop for tightening around the outside of the oil drum with the semicircular hoop 4, and the inner diameter of the hoop matches the outer diameter of the oil drum, but is smaller than the outer diameter of the ribs on the outside of the oil drum; a clamping edge assembly, which is arranged at the other end of the bracket 3 and is used to clamp the edge of the discharge end of the oil drum; and a driving assembly, which is arranged on the bracket 2 and is used to drive the bracket 3 to rotate.

[0035] Specifically, the frame 1 is rectangular and vertically arranged; the bracket 2 is U-shaped and horizontally arranged, with its middle portion movably connected to the frame 1. The bracket 3 is positioned between the two ends of the U-shaped structure of the bracket 2 and comprises a curved rod and a straight rod. The ends of the curved rod are hinged to the ends of the bracket 2, and the curved rod is arranged with an arc of no more than 180°. The straight rod is connected to the middle of the curved rod, and the vertical curved rod is arranged in a flat surface. The semicircular hoop 4 is arranged parallel to the curved rod of the bracket 3, with an arc of no more than 180°. The clamp 5 is curved, and the free ends of the two clamps 5 are locked and connected by fasteners and are removable. The outer side of the oil barrel is provided with an annular rib, and the discharge end is provided with a raised end edge. The hoop ring surrounds the lower side of the rib in the middle and lower part of the oil barrel. The clamp assembly can be tightened or loosened after engaging the edge of the discharge end of the oil barrel. The drive assembly drives the rotation of the bracket 3, which can be stopped and maintained at any angle. In actual use of this technical solution, the bracket 2 is first lowered to a suitable height so that the bracket 3 corresponds to the oil barrel. While the two clamps 5 remain separated, the semicircular hoop 4 is clamped to one side of the oil barrel, and the clamping edge assembly corresponds to the upper end of the oil barrel. Then the two clamps 5 are rotated together and the free ends are locked, thereby forming a hoop environment protected in the middle and lower part of the oil barrel. At the same time, the clamping edge assembly clamps the edge of the discharge end of the oil barrel. Therefore, after the bracket 2 rises to a suitable height, the driving assembly can drive the bracket 3 to rotate, and the bracket 3 drives the oil barrel to rotate and tilt. During this process, the discharge end of the oil barrel slowly rotates downward, and the hoop provides sufficient driving force by supporting the ribs on the outer wall of the oil barrel. At the same time, the clamping edge assembly can support the downward discharge end of the oil barrel, thereby avoiding the risk of the oil barrel slipping.

[0036] Compared with the prior art, the oil drum flip clamp assembly proposed in the embodiment of the present invention forms a hoop ring by providing a semicircular hoop 4 and a clamp 5, which is convenient for installation on the oil drum, and clamps the edge of the discharge end of the oil drum through the clamping edge assembly. Therefore, when the driving assembly drives the bracket 3 to rotate, the bracket 3 drives the oil drum to rotate and tilt, so that the discharge end of the oil drum slowly rotates downward, the hoop ring provides sufficient driving force by supporting the ribs on the outer wall of the oil drum. At the same time, the clamping edge assembly can support the downward discharge end of the oil drum, avoiding the risk of the oil drum slipping during the tilting process, thereby improving the practicality of the device.

[0037] As the preferred technical solution of this embodiment, the clamping edge assembly includes a stop block 6 fixedly arranged on the bracket 2, and a beak block 7 is hinged on the stop block 6. The beak block 7 is threadedly connected to the direction away from the inner side of the bracket 3 with an adjusting screw 8, and one end of the adjusting screw 8 is against the stop block 6. Specifically, the stop block 6 is used to abut the outer side of the upper edge of the oil barrel. A gap is left between the beak block 7 and the stop block 6 to engage the upper edge of the oil barrel, that is, the beak block 7 hooks the inner side of the upper edge of the oil barrel. Then, the adjusting screw 8 is spirally adjusted to make the length of the stop block 6 longer, forcing the beak block 7 to rotate so that its end toward the inner side of the bracket 3 cooperates with the stop block 6 to clamp the upper edge of the oil barrel, thereby playing a role of limiting support when the oil barrel is subsequently turned over.

[0038] As the preferred technical solution of this embodiment, the driving assembly includes a driving rod 9 rotatably arranged in the bracket 2, a worm 10 is coaxially arranged on the driving rod 9, and a side rotating shaft of the bracket 3 is coaxially connected to a worm wheel 11 engaged with the worm 10. Specifically, the driving rod 9 is horizontally arranged along the end direction of the bracket 2, and the end of the driving rod 9 away from the end of the bracket 2 rotates through the bracket 2 and is provided with a crank; the arrangement of the worm 10 and the worm wheel 11 enables the rotation of the driving rod 9 in a unidirectional direction to drive the bracket 3 to rotate, and the bracket 3 can stop and remain at any rotation angle.

[0039] A transport forklift includes the above-mentioned oil drum flip clamping assembly and a frame 1. A support leg 12 is provided at the lower end of the frame 1. The end of the support leg 12 is rotatably connected to a roller 13. A first linkage assembly is provided in the frame 1. After the bracket 3 is driven to rotate to a certain angle by the driving assembly, the rotation of the bracket 3 is linked to the rolling of the roller 13 through the first linkage assembly.

[0040] Specifically, the legs 12 are horizontal and pointed in the same direction as the end of the bracket 2; the rollers 13 support the legs 12; in actual use, after the frame 1 moves to the specified position, the oil barrel is rotated to the dumping angle. As the oil in the oil barrel is continuously discharged, the oil is discharged slower and slower, and the discharge direction is closer and closer to the direction of the forklift. When dealing with a narrow dumping range, not only the position of the forklift must be adjusted, but also the dumping angle of the oil barrel must be increased, which brings trouble to the dumping process and is prone to leakage; the setting of the first linkage component allows the rotation of the bracket 3 and the rolling of the roller 13 to trigger the linkage. Therefore, after the driving component drives the bracket 3 to rotate to a certain angle for dumping for a period of time, the forklift can be moved close to the dumping range, and the bracket 3 can automatically increase the dumping angle through the linkage of the first linkage component. Therefore, not only the oil discharge speed is guaranteed, but also the oil discharge range is kept accurate. The above bracket 3 is rotated to a certain angle to set the angle at which the oil barrel can initially and smoothly pour the oil, usually the angle of the oil barrel outlet is 0°-30° below the horizontal plane.

[0041] As the preferred technical solution of this embodiment, the first linkage assembly includes a chain 14 that is arranged in a rolling manner in the frame 1 and is linked to the roller 13. A guide sleeve 15 is movably connected to the side wall of the bracket 2. A linkage member 16 is movably arranged in the guide sleeve 15. One end of the guide sleeve 15 extends to the inner side surrounded by the chain 14 and a first through groove 17 is provided on the side wall. A latching tooth 18 that movably passes through the first through groove 17 is provided on the linkage member 16. A rack 19 is fixedly provided on one end of the linkage member 16 close to the driving rod 9. A first gear 20 that matches the rack 19 is synchronously rotated on the driving rod 9. The first gear 20 can move axially and engages with the rack 19 after the driving rod 9 rotates a certain angle. At the same time, the latching tooth 18 is engaged with the chain 14. Specifically, the chain 14 is arranged vertically, and the rolling plane is arranged parallel to the side wall of the bracket 2; the guide sleeve 15 is arranged through the side wall of the bracket 2 close to the chain 14. The guide sleeve 15 can move horizontally, and the moving direction is parallel to the direction of the side wall of the bracket 2. The guide sleeve 15 is provided through the side wall of the vertical bracket 2, and one end of the guide sleeve 15 extends to the inner side surrounded by the chain 14 and moves through the outer wall of the frame 1, that is, the inner side of the frame 1 is provided with a slot matching the guide sleeve 15; the linkage member 16 is provided with a damped lifting and lowering movement in the guide sleeve 15; the first through slot 17 is provided on the side wall of the guide sleeve 15 pointing to the side of the end of the bracket 2; the size of the latch 18 matches the gap between two adjacent beads of the chain 14; during the process of the drive rod 9 driving the bracket 3 to rotate, the first gear 20 moves axially close to the position corresponding to the rack 19. When the bracket 3 rotates to a certain angle so that the oil barrel can initially pour the oil smoothly, the first gear 20 engages with the rack 19. At the same time, the guide sleeve 15 moves in conjunction with the drive assembly, driving the latch 18 on the linkage member 16 to engage with the chain 14. As a result, the chain 14 linked to the roller 13 can be linked with the drive assembly via the latch 18, the linkage member 16, the rack 19, and the first gear 20, that is, linked with the rotation of the bracket 3.

[0042] As a preferred technical solution of this embodiment, a driving block 21 and a sliding block 22 are movably provided in the bracket 2, and the driving rod 9 is threadedly connected to the driving block 21, and a first elastic member 23 is connected between the driving block 21 and the sliding block 22, and the first gear 20 is rotatably connected to the side of the sliding block 22 away from the driving block 21, and the end of the guide sleeve 15 close to the driving rod 9 extends within the movable range of the sliding block 22. The side wall of the bracket 2 is provided with a second through groove 24 matching the guide sleeve 15, and a second elastic member 25 is provided in the second through groove 24 to prevent the guide sleeve 15 from driving the latch tooth 18 to engage with the chain 14. Specifically, the driving block 21 is arranged closer to the rocker end of the driving rod 9 than the sliding block 22; the first elastic member 23 is preferably a spring, which is sleeved on the driving rod 9; the driving block 21 and the sliding block 22 only slide axially along the driving rod 9 in the bracket 2; the first gear 20 is connected to the driving rod 9 by a key connection, so that the two rotate synchronously without affecting the first gear 20 in the driving The first gear 20 moves synchronously with the sliding block 22 on the axial movement of the rod 9; when the driving rod 9 rotates, the bracket 3 drives the oil barrel to rotate and dump. During the process, the threaded transmission of the driving rod 9 and the driving block 21 causes the driving block 21 to drive the sliding block 22 to approach the guide sleeve 15 and then push the guide sleeve 15. Then, under the linkage of the chain 14 and the driving rod 9, when the driving rod 9 continues to rotate in the same direction, the driving block 21 can squeeze the first elastic member 23 to continue to approach the sliding block 22, thereby avoiding interference and ensuring The sliding block 22 pushes the guide sleeve 15 so that the latch 18 remains engaged with the chain 14; the inner wall of the second through slot 24 at one end pointing away from the end of the bracket 2 in the horizontal direction is connected to the guide sleeve 15 through a second elastic member 25, and the second elastic member 25 can also be a spring, which keeps pulling the guide sleeve 15 so that the guide sleeve 15 is automatically kept in the second through slot 24 at the end pointing away from the end of the bracket 2 without being subject to external force, that is, when the guide sleeve 15 is not pushed by the sliding block 2, the latch 18 is automatically separated from the chain 14.

[0043] As the preferred technical solution of this embodiment, a linkage rod 26 is provided on the linkage member 16 for vertical movement, and linkage grooves 27 are provided on the upper and lower inner walls of the second through groove 24. The end of the linkage rod 26 movably passes through the guide sleeve 15 and is movably connected to the linkage groove 27. The linkage groove 27 includes an inclined section and a straight section. Specifically, in actual use, after the first gear 20 is separated from the rack 19, it is easy to be misaligned, affecting the subsequent meshing; in the segmented setting of the inclined section and the straight section of the linkage groove 27, the straight section is closer to the end direction of the bracket 2 than the inclined section, and the end of the inclined section connected to the straight section is closer to the driving rod 9. That is, when the guide sleeve 15 is displaced under the push of the sliding block 22, it drives the linkage member 16 to move, and the linkage member 1 6 drives the linkage rod 26 to slide with the inclined section of the linkage groove 27 first. At this time, since the first gear 20 corresponds to the rack 19 when the sliding block 22 starts to push the guide sleeve 15, when the linkage rod 26 slides with the inclined section of the linkage groove 27, the linkage member 16 drives the rack 19 to approach the first gear 20 along the radial direction of the first gear 20, thereby ensuring smooth engagement between the two. At the same time, the linkage member 16 drives the latching tooth 18 toward the gap corresponding to the chain 14; thereafter, when the linkage rod 26 starts to slide with the straight section of the linkage groove 27, the first gear 20 remains engaged with the rack 19, and the latching tooth 18 is driven to smoothly engage the chain 14. As a result, the rolling of the chain 14 can be linked to the rotation of the drive rod 9.

[0044] In another embodiment of the present invention, a balancing platform 28 is rotatably connected to the side of the frame 1 away from the support leg 12, and two symmetrical universal wheels 29 are installed at the bottom of the balancing platform 28. A rocker seat 30 is rotatably provided on the frame 1, and the rocker seat 30 is connected to the balancing platform 28 through a shock absorbing unit 31. After the roller 13 is linked with the chain 14, the rotation of the rocker seat 30 is linked with the chain 14 through a second linkage component. Specifically, the balancing platform 28 and the universal wheel 29 support the frame 1, thereby cooperating with the roller 13 to fully support the frame 1; the rocker seat 30 includes a turntable and an eccentric rod; the balancing platform 28 is provided with a connection to the shock absorbing unit 31. The support of the unit 31; the shock-absorbing unit 31 is tilted, and its two ends are respectively hinged to the rocker seat 30 and the upper end of the balancing platform 28; the setting of the second linkage component links the rocker seat 30 with the chain 14; after the roller 13 is linked with the chain 14, the rolling of the roller 13 can link the tilting angle of the oil barrel to change. At the same time, the rocker seat 30 is also linked by the action of the second linkage component, thereby driving the upper end of the shock-absorbing unit 31 to change in height back and forth, thereby making the balancing platform 28 swing up and down, and the frame 1 also shakes, so that the oil barrel is bumped and it is more convenient to completely dump the oil, and to avoid dirt in the oil blocking the oil barrel discharge outlet.

[0045] As the preferred technical solution of this embodiment, a fixed gear 32 and a movable gear 33 arranged in an upper and lower manner are rotatably connected in the frame 1, and the chain 14 is tensioned and connected to the fixed gear 32 and the movable gear 33. The movable gear 33 is linked to the roller 13 through a pulley assembly. The rotating shaft of the movable gear 33 is connected to the second gear 34 that is movable and arranged in the frame 1 through a universal joint transmission. The rotating shaft of the rocker arm seat 30 is coaxially connected to the third gear 35 that is rotatably arranged in the frame 1. The third gear 35 and the second gear 34 are arranged in correspondence with each other in the upper and lower directions. Specifically, the fixed gear 32 and the movable gear 33 are axially horizontal and are arranged on the side wall of the vertical bracket 2; the lifting and lowering of the second gear 34 controls its engagement and separation with the third gear 35, and the tooth shapes of the two have a certain inclination angle Setting; one end of the rotating shaft of the second gear 34 is connected to the rotating shaft of the movable gear 33 through a universal joint, and the other end is connected to a sliding shaft through another universal joint. The sliding shaft is rotatably connected in the frame 1, which can support the rotating shaft of the second gear 34. At the same time, when the rotating shaft of the second gear 34 swings up and down, the sliding shaft can move axially to eliminate interference; in the process of the above guide sleeve 15 driving the latch teeth 18 to engage with the chain 14, the moving range of the guide sleeve 15 can continue to move outward after the latch teeth 18 engage with the chain 14, so that the chain 14 is tightened, thereby causing the movable gear 33 to rise, and the movable gear 33 drives the second gear 34 to rise to engage with the third gear 35 for transmission. Conversely, the second gear 34 is separated from the third gear 35.

[0046] As the preferred technical solution of this embodiment, the pulley assembly includes a transmission shaft 36 rotatably arranged in the frame 1, one end of the transmission shaft 36 is connected to a roller 13 through a first synchronous belt 37, and the other end of the transmission shaft 36 is connected to the rotating shaft of the movable tooth wheel 33 through a second synchronous belt 38. A tensioning pulley 39 is provided on the inner side of the second synchronous belt 38, and the tensioning pulley 39 is connected to the frame 1 in a radially elastic and movable manner. Specifically, the first synchronous belt 37 is provided in the support leg 12 for protection; the second synchronous belt 38 is provided in the frame 1, and the second synchronous belt 38 is tightened by the transmission shaft 36, the rotating shaft of the movable tooth wheel 33 and the tensioning pulley 39. The rotating shaft of the tensioning pulley 39 is rotatably connected to a slider 40 elastically slidingly arranged in the frame 1. When the chain 14 is not pushed and tightened by the guide sleeve 15, the tensioning pulley 39 supports one side of the second synchronous belt 38, so that the movable tooth wheel 33 remains in the lowered position, the second gear 34 and the third gear 35 remain separated, and the transmission shaft 36 and the movable tooth wheel 33 maintain synchronous transmission.

[0047] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A transport forklift, comprising a frame (1), a bracket (2) arranged on the frame (1) for lifting, and a bracket (3) hinged to the bracket (2), and further comprising: A driving assembly is provided on the bracket (2) and is used to drive the bracket (3) to rotate; the driving assembly includes a driving rod (9) rotatably provided in the bracket (2), a worm (10) being coaxially provided on the driving rod (9), a worm wheel (11) meshing with the worm (10) being coaxially connected to a rotating shaft on one side of the bracket (3), and is characterized in that a support leg (12) is provided at the lower end of the frame (1), and a roller (13) is rotatably connected to the end of the support leg (12), and a first linkage assembly is provided in the frame (1), and after the bracket (3) is driven to rotate to a certain angle by the driving assembly, the rotation of the bracket (3) is linked to the rolling of the roller (13) through the first linkage assembly; The first linkage assembly comprises a chain (14) rollingly arranged in the frame (1) and linked to the roller (13); a guide sleeve (15) is movably connected to the side wall of the bracket (2); a linkage member (16) is movably arranged in the guide sleeve (15); one end of the guide sleeve (15) extends to the inner side surrounded by the chain (14) and a first through slot (17) is provided in the side wall; a latching tooth (18) movably passing through the first through slot (17) is provided on the linkage member (16); the linkage member (16) A rack (19) is fixedly provided at one end close to the driving rod (9), and a first gear (20) matching the rack (19) is provided on the driving rod (9) for synchronous rotation. The first gear (20) can move axially and engage with the rack (19) after the driving rod (9) rotates a certain angle, and the latching tooth (18) is engaged with the chain (14); a driving block (21) and a sliding block (22) are movably provided in the bracket (2), and the driving rod (9) and The driving block (21) is threadedly connected and movably connected to the sliding block (22). A first elastic member (23) is connected between the driving block (21) and the sliding block (22). The first gear (20) is rotatably connected to the side of the sliding block (22) away from the driving block (21). The end of the guide sleeve (15) close to the driving rod (9) extends within the range of motion of the sliding block (22). The side wall of the bracket (2) is provided with a second through groove (24) matching the guide sleeve (15). The second through groove (24) is provided with a second elastic member (25) that prevents the guide sleeve (15) from driving the latching teeth (18) to engage with the chain (14). A linkage rod (26) is vertically movably provided on the linkage member (16). The upper and lower inner walls of the second through groove (24) are provided with linkage grooves (27). The end of the linkage rod (26) movably passes through the guide sleeve (15) and is movably connected to the linkage groove (27). The linkage groove (27) includes an inclined section and a straight section.

2. The transport forklift according to claim 1, characterized in that: A balancing platform (28) is rotatably connected to the frame (1) at a side away from the support leg (12), and two symmetrical universal wheels (29) are installed at the bottom of the balancing platform (28). A rocker seat (30) is rotatably provided on the frame (1), and the rocker seat (30) is connected to the balancing platform (28) through a shock absorbing unit (31). After the roller (13) is linked to the chain (14), the rotation of the rocker seat (30) is linked to the chain (14) through a second linkage component.

3. The transport forklift according to claim 2, characterized in that: A fixed tooth wheel (32) and a movable tooth wheel (33) arranged vertically are rotatably connected in the frame (1); the chain (14) is tensionedly connected to the fixed tooth wheel (32) and the movable tooth wheel (33); the movable tooth wheel (33) is linked to the roller (13) via a pulley assembly; the rotating shaft of the movable tooth wheel (33) is connected to a second gear (34) arranged to be lifted and lowered in the frame (1) via a universal joint transmission; the rotating shaft of the rocker arm seat (30) is coaxially connected to a third gear (35) rotatably arranged in the frame (1); the third gear (35) and the second gear (34) are arranged correspondingly in the upper and lower directions.

4. The transport forklift according to claim 3, characterized in that: The pulley assembly comprises a transmission shaft (36) rotatably arranged in a frame (1), one end of the transmission shaft (36) being connected to a roller (13) via a first synchronous belt (37), and the other end of the transmission shaft (36) being connected to a rotating shaft of a movable toothed wheel (33) via a second synchronous belt (38), a tensioning wheel (39) being provided inside the second synchronous belt (38), and the tensioning wheel (39) being connected to the frame (1) in a radially elastic manner.

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