Oil drum gripper mechanism and transfer forklift

Abstract

The invention discloses an oil drum gripper mechanism and a transfer forklift, and relates to the technical field of forklifts.The oil drum gripper mechanism comprises a guide frame, a lifting table is slidably installed on the guide frame in the vertical direction, two parallel supporting arms are horizontally installed on the lifting table, a semicircular frame is rotatably installed between the two supporting arms, and the rotating axis of the semicircular frame is horizontal and perpendicular to the supporting arms; a mounting rod is arranged on the semicircular frame, an anti-falling assembly is arranged at one end of the mounting rod, and a clamping assembly is arranged at the other end of the mounting rod; and a motor for driving the semicircular frame to rotate is mounted on the support arm. When the oil drum in a vertical state is transferred to a set position to be horizontally placed, the whole process of inclining, lifting, transferring and horizontally placing the oil drum is completely mechanically controlled, safety and stability are achieved, and the situation that the oil drum is collided when the oil drum is manually put down is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of forklifts, in particular to an oil drum gripping mechanism and a transfer forklift. Background Art

[0002] When transporting oil drums, stability must be ensured to avoid collision and friction. Therefore, special oil drum grabbers are generally used to grab the oil drums and transport them via forklifts.

[0003] A Chinese utility model patent with publication number CN215402919U discloses an oil drum clamping device, comprising a column and a forklift connecting frame arranged perpendicular to each other, a first eagle-beak clamping head is arranged at one end of the column away from the forklift connecting frame, a group of connecting plates are hingedly arranged on both sides of the column corresponding to the first eagle-beak clamping head, a second eagle-beak clamping head is hingedly arranged on the side of the connecting plate away from the column, and clamping parts for driving the two groups of connecting plates to move closer to each other are arranged on the connecting plate and the column.

[0004] The Chinese utility model patent with publication number CN210915192U discloses a forklift gripper, including a shoe cover plate; a slot is arranged on the shoe cover plate; a clamp mechanism for clamping an oil drum is arranged on the bottom surface of the shoe cover plate; the clamp mechanism includes a bucket grabber, a vertical pole, and a frame plate for mounting the bucket grabber; four frame plates are evenly arranged on the circumference of the vertical pole to divide the bottom surface of the shoe cover plate into four areas; a slideway for reciprocating sliding of the bucket grabber is arranged on the frame plate; the slideway is arranged parallel to the shoe cover plate; the bucket grabber includes a fixed seat; a hole groove matching the slideway is arranged in the fixed seat; a bump-type clamp is arranged on both vertical side surfaces of the fixed seat; and a hook claw and a top block are arranged on the bump-type clamp.

[0005] The existing oil drum gripper can only place the oil drum vertically to a designated location after grabbing it. However, the oil drum often needs to be laid flat during storage and transportation, which requires manual labor to lay the oil drum down. The oil drum filled with oil is very heavy, and manual operation can easily cause bumps on the oil drum and even cause oil leakage. Based on this, how to design an oil drum gripper that can grab the oil drum and lay it flat to a designated location is a problem that technicians in this field need to solve. Summary of the invention

[0006] The object of the present invention is to provide an oil drum gripping mechanism and a transfer forklift to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil drum gripping mechanism, comprising a guide frame, a lifting platform is slidably installed on the guide frame along the vertical direction, two parallel arms are horizontally installed on the lifting platform, a semicircular frame is rotatably installed between the two arms, and the rotation axis of the semicircular frame is horizontal and perpendicular to the arms; a mounting rod is provided on the semicircular frame, an anti-slip assembly is provided at one end of the mounting rod, and a clamping assembly is provided at the other end of the mounting rod; a motor for driving the semicircular frame to rotate is installed on the arm.

[0008] As a preferred technical solution of the present invention, a support rod is installed at the bottom of the guide frame, a support block is fixedly installed at the end of the support rod, and a rubber layer is provided on the surface of the support block.

[0009] As a preferred technical solution of the present invention, the mounting rod is perpendicular to the rotation axis of the semicircular frame, and the mounting rod slides with the semicircular frame along its length direction; the support arm slides with the lifting platform along its length direction, a positioning hole is provided on the support arm, and a pin matching the positioning hole is installed on the lifting platform.

[0010] As a preferred technical solution of the present invention, an incomplete gear is fixedly mounted on the output shaft of the motor, and a spur rack matching the incomplete gear is horizontally fixedly mounted on the lifting platform.

[0011] As a preferred technical solution of the present invention, a telescopic spring sleeved on a support rod is installed between the support block and the guide frame; a vertical groove is opened on the support rod, and a plug rod matching the vertical groove is vertically fixedly installed at the bottom of the lifting platform.

[0012] As a preferred technical solution of the present invention, the anti-drop assembly includes an arc-shaped plate fixedly mounted on the mounting rod, a limiting belt is mounted on one end of the arc-shaped plate, and a socket matching the limiting belt is opened at the other end of the arc-shaped plate.

[0013] As a preferred technical solution of the present invention, the clamping assembly includes a first clamping block fixedly mounted on a mounting rod, on which a plug block matching the gap at the bottom of the oil barrel is slidably mounted; a telescopic rod parallel to the mounting rod is movably mounted on the mounting rod, and a second clamping block is fixedly mounted at one end of the telescopic rod.

[0014] As a preferred technical solution of the present invention, the telescopic rod and the mounting rod are both round rods and their axes coincide with each other. A retaining ring that cooperates with the semicircular frame is fixedly installed on the mounting rod. A first accommodating groove is provided on the inner wall of the semicircular frame, and an elastic member is installed in the first accommodating groove. A second accommodating groove that is compatible with the first accommodating groove is provided on the mounting rod, and a positioning block is slidably installed in the second accommodating groove.

[0015] As a preferred technical solution of the present invention, a fan-shaped groove is provided on the mounting rod, and an arc block matching with the fan-shaped groove is fixedly installed on the telescopic rod; the end face of the positioning block facing the center of the mounting rod is a hemispherical surface, the circumferential surface of the arc block away from the center of the mounting rod is an arc surface, and a positioning groove matching with the positioning block is provided on the circumferential surface of the arc block away from the center of the mounting rod.

[0016] The present invention also provides a transfer forklift, comprising the above-mentioned oil drum gripping mechanism.

[0017] In the above technical scheme, the present invention provides a transfer forklift including an oil barrel gripping mechanism. When transferring the vertical oil barrel to a predetermined position for horizontal placement, the oil barrel is first tilted at a certain angle, and then the oil barrel is lifted by the cooperation of the anti-slip assembly and the clamping assembly, and then the oil barrel is rotated while being lifted, so that the oil barrel is in a horizontal state; after the forklift transfers the oil barrel to the predetermined position, the oil barrel can be placed flat at a predetermined height by controlling the lifting platform to descend. The entire process of tilting, lifting, transferring and placing the oil barrel flat in the present invention is completely controlled mechanically, which is safe and stable, and avoids the situation where the oil barrel is knocked against when it is manually laid down. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a first three-dimensional structural schematic diagram of the oil drum gripping mechanism in the embodiment;

[0020] Figure 2 It is a second three-dimensional structural schematic diagram of the oil drum gripping mechanism in the embodiment;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 A top view of the oil drum gripping mechanism in the embodiment;

[0023] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0024] Figure 6 It is a schematic diagram of the structure of the connection between the mounting rod, the telescopic rod and the semicircular frame in the embodiment;

[0025] Figure 7 for Figure 6 Schematic diagram of section aa in the figure;

[0026] Figure 8 for Figure 6 Schematic diagram of the bb section.

[0027] Description of reference numerals:

[0028] 1. Guide frame; 2. Lifting platform; 3. Support arm; 4. Semicircular frame; 401. First accommodating groove; 5. Mounting rod; 501. Second accommodating groove; 502. Fan-shaped groove; 6. Anti-slip assembly; 601. Arc plate; 602. Limiting belt; 603. Socket; 7. Clamping assembly; 701. First clamping block; 702. Insertion block; 703. Telescopic rod; 704. Second clamping block; 8. Motor; 9. Support rod; 10. Support block; 11. Latch; 12. Incomplete gear; 13. Spur rack; 14. Telescopic spring; 15. Insertion rod; 16. Retaining ring; 17. Elastic member; 18. Positioning block; 19. Arc block; 1901. Positioning groove. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This embodiment provides an oil drum gripping mechanism and a transfer forklift including the oil drum gripping mechanism. Figure 1 and Figure 2 As shown, the oil drum gripping mechanism includes a rectangular guide frame 1, which is fixedly mounted on the body of the forklift, and a lifting platform 2 is slidably mounted on the guide frame 1 in the vertical direction. A driving component for driving the lifting platform 2 to rise and fall is installed on the forklift, and the driving component can adjust the lifting platform 2 to any height within a predetermined range and keep the height of the lifting platform 2 unchanged. The specific structure of the driving component is the prior art in this field and will not be elaborated on here; two mutually parallel support arms 3 are horizontally mounted on the lifting platform 2, and the support arms 3 slide with the lifting platform 2 along the length direction thereof, and a positioning hole is opened on the support arm 3, and a movable support that is aligned with the positioning hole is movably mounted on the lifting platform 2 An adaptable latch 11; a semicircular frame 4 is rotatably installed between the two arms 3, and the rotation axis of the semicircular frame 4 is horizontal and perpendicular to the arm 3; a mounting rod 5 is provided on the semicircular frame 4, one end of the mounting rod 5 is provided with an anti-slip assembly 6, and the other end of the mounting rod 5 is provided with a clamping assembly 7; a motor 8 for driving the semicircular frame 4 to rotate is installed on the arm 3; a support rod 9 is installed at the bottom of the guide frame 1, and a support block 10 is fixedly installed at the end of the support rod 9, and a rubber layer is provided on the surface of the support block 10; the mounting rod 5 is a round rod, the mounting rod 5 is perpendicular to the rotation axis of the semicircular frame 4, and the mounting rod 5 slides with the semicircular frame 4 along its length direction.

[0031] Specifically, in the initial state, the oil drum is placed vertically and the semicircular frame 4 is in a horizontal state. The operator first drives the forklift to the vicinity of the oil drum, then controls the lifting platform 2 to descend to a predetermined height, and then slightly adjusts the position of the forklift so that the anti-slip component 6 is partially fitted with the oil drum; then the operator controls the support arm 3 to move a short distance toward the lifting platform 2, and drives the semicircular frame 4 to rotate through the motor 8. During this process, the anti-slip component 6 applies a thrust to the upper half of the oil drum, and the support block 10 supports the bottom edge of the oil drum, so that the oil drum is tilted at a certain angle. In this embodiment, the specific tilt angle is 3°. During this process, the motor 8 synchronously drives the semicircular frame 4 to rotate, so that the virtual axis of the semicircular frame 4 and the axis of the oil drum always coincide with each other; in the tilted state of the oil drum, the operator clamps the raised bottom edge of the oil drum through the clamping component 7, and bundles the oil drum through the anti-slip component 6. Then, the operator controls the lifting platform 2 to rise while continuing to drive the semicircular frame through the motor 8 4. The mounting rod 5, the anti-slip assembly 6, the clamping assembly 7 and the oil drum rotate as a whole until the oil drum is adjusted to a horizontal state; in summary, there are two stages for leveling the oil drum, the first being the stage of pushing the oil drum to an inclined state, during which the clamping assembly 7 does not clamp the oil drum, and the second being the stage of completely leveling the oil drum in an inclined state, during which the clamping assembly 7 clamps the oil drum, and the oil drum rises while being leveled; after the oil drum is leveled, the motor 8 stops working, the clamping assembly 7 clamps the top of the edge of one end of the oil drum, and the anti-slip assembly 6 supports the other end of the oil drum, so that the oil drum remains in a horizontal and stable state; then the lifting platform 2 continues to rise until the oil drum rises to a predetermined height; subsequently, the operator drives the forklift to a predetermined position and controls the lifting platform 2 to descend until the oil drum is stably placed, and finally releases the restraints of the anti-slip assembly 6 and the clamping assembly 7 on the oil drum, and controls the lifting platform 2 to rise, so that the anti-slip assembly 6 and the clamping assembly 7 are completely separated from the oil drum.

[0032] like Figure 1 and Figure 5As shown, an incomplete gear 12 is fixedly installed on the output shaft of the motor 8, and a spur rack 13 cooperating with the incomplete gear 12 is fixedly installed horizontally on the lifting platform 2; in this way, when the oil drum is lifted and laid flat, when the motor 8 starts to start, the incomplete gear 12 will immediately enter into a meshing state with the spur rack 13, so that the support arm 3, the semicircular frame 4, the mounting rod 5, the anti-slip assembly 6, the clamping assembly 7 and the motor 8 are moved toward the guide frame 1 as a whole through the interaction force between the incomplete gear 12 and the spur rack 13, and the motor 8 synchronously drives the semicircular frame 4 to rotate; after the semicircular frame 4 rotates 3°, the oil drum enters In the tilted state, the incomplete gear 12 and the spur rack 13 are out of meshing state; at this time, the operator limits the position of the support arm 3 by means of the latch 11, so that the support arm 3 and the lifting platform 2 remain relatively stationary; when the motor 8 continues to operate, it will drive the semicircular frame 4 and the incomplete gear 12 to rotate, but the support arm 3 will no longer translate; in summary, in this embodiment, the single driving source of the motor 8 is used to realize the two actions of translation of the support arm 3 and rotation of the semicircular frame 4, and the support arm 3 will no longer translate after being translated to a predetermined position, while the semicircular frame 4 can continue to rotate; this not only improves the efficiency of transportation, but also significantly reduces the manufacturing cost.

[0033] In actual use, during the oil drum tilting stage, it is necessary to ensure that the support block 10 and the guide frame 1 are relatively still. However, during the oil drum transportation stage by a forklift, the oil drums already placed on the lower layer will interfere with the support block 10. Currently, the support block 10 can only be disassembled or repositioned by the operator. In this way, the operator has to disassemble or reposition the support block 10 during the transportation of each oil drum, which greatly reduces the efficiency of transportation.

[0034] like Figure 2As shown, the support rod 9 and the guide frame 1 slide in the horizontal direction, and a telescopic spring 14 is installed between the support block 10 and the guide frame 1 and is sleeved on the support rod 9; a vertical groove is opened on the support rod 9, and an insertion rod 15 that cooperates with the vertical groove is vertically fixedly installed at the bottom of the lifting platform 2; specifically, when the lifting platform 2 is at the lowest point of its vertical stroke, the insertion rod 15 is inserted into the support rod 9, which limits the support rod 9 and the support block 10, and the support rod 9 and the support block 10 can only remain stationary relative to the guide frame 1, so that in the stage of tilting the oil drum (that is, the stage when the clamping assembly 7 has not yet clamped the raised bottom edge of the oil drum), the support rod 9 is The block 10 can support the bottom edge of the oil barrel, thereby promoting the tilting of the oil barrel; when the clamping assembly 7 clamps the raised bottom edge of the oil barrel, the lifting platform 2 rises, and the insertion rod 15 is also separated from the support rod 9, and the support rod 9 and the support block 10 are no longer restricted; in this way, when the forklift transports the oil barrel, the oil barrel that has been placed on the lower layer can push the support block 10 to move horizontally after contacting with the support block 10, and the support block 10 will not interfere with the oil barrel that has been placed on the lower layer, thereby ensuring that the forklift can travel to the predetermined placement position; the telescopic spring 14 can reset the support rod 9 and the support block 10 after the transportation is completed. In summary, in this embodiment, the operator does not need to disassemble the support rod 9 and the support block 10, nor does he need to adjust the position of the support rod 9 and the support block 10. After the lifting platform 2 rises from the lowest point, the insertion rod 15 also rises and automatically releases the limit on the support rod 9 and the support block 10, which significantly improves the efficiency of transportation.

[0035] like Figure 2 and Figure 5 As shown, the anti-slip assembly 6 includes an arc-shaped plate 601 fixedly mounted on the mounting rod 5, and the inner arc surface of the arc-shaped plate 601 is adapted to the surface of the oil drum; the operator first drives the forklift to the vicinity of the oil drum to be transported, and then controls the lifting platform 2 to descend to a predetermined height, and then slightly adjusts the position of the forklift so that the inner arc surface of the arc-shaped plate 601 fits the surface of the oil drum; a limiting belt 602 is installed at one end of the arc-shaped plate 601, and a socket 603 cooperating with the limiting belt 602 is opened at the other end of the arc-shaped plate 601; the operator inserts one end of the limiting belt 602 into the socket 603, so that the limiting belt 602 fits tightly to the surface of the oil drum, and the limiting belt 602 is in a tensioned state; in this way, the binding of the oil drum by the anti-slip assembly 6 is completed. It should be noted that, when the oil drum changes from a vertical state to an inclined state, the limiting belt 602 is not inserted into the socket 603, but the operator needs to wait until the oil drum changes to an inclined state before inserting one end of the limiting belt 602 into the socket 603. The specific structure of the limiting belt 602 and the socket 603 is prior art, and the specific structure can refer to the socket structure of a car seat belt, but is not limited to this structure, and will not be elaborated here.

[0036] like Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the clamping assembly 7 includes a first clamping block 701 fixedly mounted on the mounting rod 5, and a plug block 702 matching the gap at the bottom of the oil drum is slidably mounted on the first clamping block 701; a telescopic rod 703 parallel to the mounting rod 5 is movably mounted, and a second clamping block 704 is fixedly mounted on one end of the telescopic rod 703; the telescopic rod 703 is a round rod and coincides with the axis of the mounting rod 5, the mounting rod 5 and the semicircular frame 4 are slidably matched, but the position of the mounting rod 5 moving relative to the semicircular frame 4 is limited to a certain range, that is, the mounting rod 5 will not fall off the semicircular frame 4, and a retaining ring 16 matching the semicircular frame 4 is fixedly mounted on the mounting rod 5; a first accommodating groove 401 is provided on the inner wall of the semicircular frame 4, and an elastic member 17 is installed in the first accommodating groove 401. In this embodiment, the elastic member 17 is an elliptical metal ring when there is no external force, and a second accommodating groove 501 matching the first accommodating groove 401 is provided on the mounting rod 5, and a second accommodating groove 501 is slidably mounted in the second accommodating groove 501. There is a positioning block 18. In the initial state, the contact portion of the positioning block 18 and the elastic member 17 is located on the contact surface of the mounting rod 5 and the semicircular frame 4; a fan-shaped groove 502 is provided on the mounting rod 5, and the fan-shaped groove 502 and the second accommodating groove 501 have an overlapping portion. An arc block 19 that cooperates with the fan-shaped groove 502 is fixedly installed on the telescopic rod 703, and the arc block 19 can rotate around the axis of the telescopic rod 703 in the fan-shaped groove 502, and can also move along the axis direction of the telescopic rod 703; the end face of the positioning block 18 facing the center of the mounting rod 5 is a hemispherical surface, and the circumferential surface of the arc block 19 away from the center of the mounting rod 5 is an arc surface, and a positioning groove 1901 that cooperates with the positioning block 18 is provided on the circumferential surface of the arc block 19 away from the center of the mounting rod 5, and the positioning groove 1901 is arc-shaped. When the positioning block 18 is inserted into the positioning groove 1901, the arc block 19 cannot rotate relative to the positioning block 18, but can rise relative to the positioning block 18 along the axial direction of the telescopic rod 703.

[0037] An annular protrusion structure is formed at the bottom of the oil drum, and a gap is provided on the annular protrusion structure. The clamping assembly 7 is used to clamp the annular protrusion structure at the bottom of the oil drum. The specific use process of the clamping assembly 7 is as follows: in the initial state, the oil drum is placed vertically, the semicircular frame 4 is in a horizontal state, and the mounting rod 5 is in a vertical state. The operator first drives a forklift to the vicinity of the oil drum, and then controls the lifting platform 2 to descend, so that the bottom surface of the first clamping block 701 is in contact with the upper surface of the annular edge at the bottom of the oil drum, and the bottom surface of the second clamping block 704 is just in contact with the ground. The operator adjusts the position of the insert block 702 so that the insert block 702 is inserted into the gap of the annular protrusion at the bottom of the oil drum; when the operator adjusts the oil drum to a tilted state, the semicircular frame 4 and the mounting rod 5 are also rotated. The first clamping block 701 is moved, and the annular protrusion at the bottom of the oil drum pushes the first clamping block 701, so that the first clamping block 701, the mounting rod 5 and the anti-slip assembly 6 move along the axial direction of the oil drum relative to the semicircular frame 4; it should be noted that the reason for this design is that in the process of adjusting the oil drum from the vertical to the inclined state, the axis and the rotation axis of the semicircular frame 4 and the mounting rod 5 do not coincide. Only by designing the mounting rod 5 to be able to slide relative to the semicircular frame 4 can it be ensured that the arc plate 601 is always in contact with the surface of the oil drum at this stage and applies a stable thrust to the oil drum; after the oil drum is adjusted to the inclined state, the operator pulls the second clamping block 704 axially downward along the mounting rod 5, driving the telescopic rod 703 and the arc block 19 synchronously downward until the arc block 19 and the fan-shaped groove 502 are aligned. The bottom surfaces are in contact with each other. In this state, the upper surface of the second clamping block 704 is flush with the bottom surface of the annular protrusion at the bottom of the oil drum; the arc block 19 pushes the positioning block 18 during the downward movement, so that the positioning block 18 is partially inserted into the first accommodating groove 401, and the elastic member 17 is deformed by the thrust of the positioning block 18; since a part of the positioning block 18 is located in the second accommodating groove 501 and the other part is located in the first accommodating groove 401, the relative stillness of the semicircular frame 4 and the mounting rod 5 is ensured by the positioning effect of the positioning block 18; then, the operator rotates the second clamping block 704 so that the upper surface of the second clamping block 704 is in contact with the bottom surface of the annular protrusion at the bottom of the oil drum. In this state, the first clamping block 701 is in contact with the upper surface of the annular edge of the bottom of the oil drum The second clamping block 704 fits with the lower surface of the annular edge at the bottom of the oil drum, and the insert block 702 is inserted into the gap of the annular protrusion at the bottom of the oil drum, which plays a clamping role on the annular protrusion at the bottom of the oil drum; and in this state, the positioning groove 1901 just corresponds to the position of the positioning block 18, then the positioning block 18 will be inserted into the positioning groove 1901 under the action of the rebound force of the elastic member 17, but a part of the positioning block 18 is still located in the first accommodating groove 401; in this way, the positioning block 18 not only makes the semicircular frame 4 and the mounting rod 5 relatively stationary, but also prevents the arc block 19, the telescopic rod 703 and the second clamping block 704 from rotating, ensuring that the second clamping block 704 can always cooperate with the first clamping block 701 and the insert block 702 to clamp the annular protrusion at the bottom of the oil drum;In this way, during the process of adjusting the oil drum from the inclined state to the horizontal state, the semicircular frame 4 and the mounting rod 5 always remain relatively still, and the clamping assembly 7 can always stably clamp the oil drum; after the forklift transports the oil drum in the horizontal state to the predetermined position, the operator moves the plug block 702 to separate the plug block 702 from the annular protrusion at the bottom of the oil drum, and releases the binding of the anti-slip assembly 6 to the oil drum, and then drives the lifting platform 2 to rise, so that the support arm 3, the semicircular frame 4, the mounting rod 5, the anti-slip assembly 6, and the clamping assembly 7 are all in a stable state. and the motor 8 rises as a whole; because the annular protrusion at the bottom of the oil barrel is separated from the first clamping block 701 and the second clamping block 704, the operator is able to push the second clamping block 704 to reset along the axial direction of the telescopic rod 703, and the arc block 19 is also reset along the axial direction of the telescopic rod 703 and separated from the positioning block 18, and the operator then reverses the second clamping block 704, so that the telescopic rod 703 and the arc block 19 are reset around the telescopic rod 703, and the positioning block 18 is reset to under the action of the rebound force of the elastic member 17; Figure 6 Status shown.

[0038] To sum up, in the present embodiment, during the process of the oil drum changing from a vertical state to a tilted state, the mounting rod 5 and the anti-slip assembly 6 can slide relative to the semicircular frame 4, thereby ensuring that the arc plate 601 can stably push the oil drum to a tilted state. When the oil drum is in the tilted state, the operator pulls down the second clamping block 704 and then rotates the second clamping block 704, so as to achieve the clamping of the oil drum by the clamping assembly 7, and the relative locking of the semicircular frame 4 and the mounting rod 5, thereby ensuring that the mounting rod 5, the anti-slip assembly 6 and the clamping assembly 7 are stationary relative to the oil drum during the adjustment of the oil drum from the tilted state to the horizontal state, thereby significantly improving the transportation stability. The operator achieves two effects by controlling the second clamping block 704, thereby improving the operation efficiency. Similarly, after the transportation of a single oil drum is completed, the operator only needs to reset the second clamping block 704 to release the relative locking of the semicircular frame 4 and the mounting rod 5.

[0039] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An oil drum gripping mechanism, comprising a guide frame (1), on which a lifting platform (2) is slidably mounted in a vertical direction, characterized in that: Two mutually parallel supporting arms (3) are horizontally mounted on the lifting platform (2); a semicircular frame (4) is rotatably mounted between the two supporting arms (3); the rotating axis of the semicircular frame (4) is horizontal and perpendicular to the supporting arms (3); a mounting rod (5) is mounted on the semicircular frame (4); an anti-slip assembly (6) is mounted at one end of the mounting rod (5); a clamping assembly (7) is mounted at the other end of the mounting rod (5); and a motor (8) for driving the semicircular frame (4) to rotate is mounted on the supporting arm (3).

2. The oil drum gripping mechanism according to claim 1, characterized in that: A support rod (9) is installed at the bottom of the guide frame (1), a support block (10) is fixedly installed at the end of the support rod (9), and a rubber layer is provided on the surface of the support block (10).

3. The oil drum gripping mechanism according to claim 2, characterized in that: The mounting rod (5) is perpendicular to the rotation axis of the semicircular frame (4), and the mounting rod (5) is slidably matched with the semicircular frame (4) along its length direction; the support arm (3) is slidably matched with the lifting platform (2) along its length direction, a positioning hole is opened on the support arm (3), and a latch (11) adapted to the positioning hole is installed on the lifting platform (2).

4. The oil drum gripping mechanism according to claim 3, characterized in that: An incomplete gear (12) is fixedly mounted on the output shaft of the motor (8), and a spur rack (13) matching the incomplete gear (12) is horizontally fixedly mounted on the lifting platform (2).

5. The oil drum gripping mechanism according to claim 4, characterized in that: A telescopic spring (14) sleeved on a support rod (9) is installed between the support block (10) and the guide frame (1); a vertical groove is provided on the support rod (9), and a plug rod (15) matching the vertical groove is vertically fixedly installed at the bottom of the lifting platform (2).

6. The oil drum gripping mechanism according to claim 5, characterized in that: The anti-drop assembly (6) comprises an arc-shaped plate (601) fixedly mounted on the mounting rod (5), a limiting belt (602) being mounted on one end of the arc-shaped plate (601), and a socket (603) cooperating with the limiting belt (602) being provided on the other end of the arc-shaped plate (601).

7. The oil drum gripping mechanism according to claim 6, characterized in that: The clamping assembly (7) comprises a first clamping block (701) fixedly mounted on the mounting rod (5), an inserting block (702) matching the gap at the bottom of the oil drum being slidably mounted on the first clamping block (701); a telescopic rod (703) parallel to the mounting rod (5) being movably mounted thereon, a second clamping block (704) being fixedly mounted on one end of the telescopic rod (703).

8. The oil drum gripping mechanism according to claim 7, characterized in that: The telescopic rod (703) and the mounting rod (5) are both round rods and their axes coincide with each other. A retaining ring (16) matching with the semicircular frame (4) is fixedly mounted on the mounting rod (5). A first receiving groove (401) is provided on the inner wall of the semicircular frame (4), and an elastic member (17) is installed in the first receiving groove (401). A second receiving groove (501) matching with the first receiving groove (401) is provided on the mounting rod (5), and a positioning block (18) is slidably installed in the second receiving groove (501).

9. The oil drum gripping mechanism according to claim 8, characterized in that: The installation rod (5) is provided with a fan-shaped groove (502), and an arc block (19) matching with the fan-shaped groove (502) is fixedly installed on the telescopic rod (703); the end surface of the positioning block (18) facing the center of the installation rod (5) is a hemispherical surface, the circumferential surface of the arc block (19) away from the center of the installation rod (5) is an arc surface, and a positioning groove (1901) matching with the positioning block (18) is provided on the circumferential surface of the arc block (19) away from the center of the installation rod (5).

10. A transfer forklift, characterized in that: It comprises the oil drum gripping mechanism as described in any one of claims 1 to 9.

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