A multifunctional clamp

Abstract

The present invention relates to the technical field of holding clamps, and specifically discloses a multifunctional holding clamp, comprising a vertically arranged guide rod and a locking mechanism, wherein a sliding sleeve 1, a sliding sleeve 2 and a sleeve are slidably sleeved on the guide rod from bottom to top in sequence, the sliding sleeve 2 is fixedly connected to the sleeve, the sliding sleeve 1 is detachably connected to the sliding sleeve 2 through a locking mechanism, a driving hook is provided on the top of the sleeve, a connecting arm A and a connecting arm B are symmetrically hinged on the sliding sleeve 1, the ends of the connecting arm A and the connecting arm B are hinged to the clamp arm A and the clamp arm B respectively, a connecting arm C and a connecting arm D are symmetrically hinged on the sliding sleeve 2, the ends of the connecting arm C and the connecting arm D are hinged to the clamp arm C and the clamp arm D respectively, the bottom of the guide rod is connected to a shaft sleeve assembly through a connecting frame, the middle parts of the clamp arm A and the clamp arm B are hinged to the shaft sleeve assembly, and the middle parts of the clamp arm C and the clamp arm D are hinged to the shaft sleeve assembly. The structure of the present invention is ingenious and has strong applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of clamping pliers, and in particular to a multifunctional clamping pliers. Background Art

[0002] During the cooling and lifting process of calcium carbide, the calcium carbide needs to be pulled out of the calcium carbide pot and the calcium carbide or calcium carbide pot needs to be lifted and transported. Due to the large difference in size between the calcium carbide and the calcium carbide pot, a single lifting device cannot take into account the lifting of both the calcium carbide and the calcium carbide pot. Therefore, different types of clamping devices are needed to lift the calcium carbide and the calcium carbide pot respectively, resulting in low applicability of the lifting device, increased production costs, and cumbersome lifting operations. Summary of the Invention

[0003] In order to solve the problems mentioned in the background technology, the purpose of the present invention is to provide a multifunctional clamp.

[0004] In order to achieve the above objectives, the technical solution of the present invention is:

[0005] A multifunctional clamp comprises a vertically arranged guide rod and a locking mechanism, wherein a sleeve 1, a sleeve 2 and a sleeve are slidably sleeved on the guide rod from bottom to top in sequence, the sleeve 2 is fixedly connected to the sleeve, the sleeve 1 is detachably connected to the sleeve 2 through a locking mechanism, a driving hook is provided on the top of the sleeve, a connecting arm A and a connecting arm B are symmetrically hinged on the sleeve 1, the ends of the connecting arm A and the connecting arm B are hinged to the clamp arm A and the clamp arm B respectively, a connecting arm C and a connecting arm D are symmetrically hinged on the sleeve 2, the ends of the connecting arm C and the connecting arm D are hinged to the clamp arm C and the clamp arm D respectively, the bottom of the guide rod is connected to a shaft sleeve assembly through a connecting frame, the middle parts of the clamp arm A and the clamp arm B are hinged to the shaft sleeve assembly, and the middle parts of the clamp arm C and the clamp arm D are hinged to the shaft sleeve assembly.

[0006] Furthermore, the locking mechanism includes a plurality of mounting openings circumferentially arranged on the inner wall of sleeve one, a locking block hinged in the mounting opening, a plurality of locking openings circumferentially arranged on the inner wall of sleeve two, a plurality of oblique openings circumferentially arranged on the side wall of the guide rod, and a bridge guide plate hinged in the oblique opening. The movable end of the locking block is placed outside the mounting opening and the locking block maintains a tendency to tilt toward the guide rod. The positions of the locking opening and the oblique opening correspond to the locking block. The movable end of the bridge guide plate can contact the locking block. When the movable end of the locking block is placed in the locking opening, sleeve one and sleeve two are merged. When the movable end of the locking block is partially turned into the oblique opening, sleeve one and sleeve two can be separated.

[0007] Furthermore, the shaft sleeve assembly includes a main shaft sleeve, a secondary shaft sleeve, an axle pin and two wedge blocks, and retaining rings are protruding from both ends of the main shaft sleeve. The two wedge blocks are welded to the inner wall of the main shaft sleeve and are rotationally symmetrical around the axis of the guide rod. The two wedge blocks are commonly connected to the axle pin and the end of the axle pin extends to the outside of the main shaft sleeve. The axle pin outside the main shaft sleeve is connected to the connecting frame. The secondary shaft sleeve is sleeved on the axle pin between the two wedge blocks. The middle parts of the clamp arm A and the clamp arm B are hinged to the secondary shaft sleeve, and the middle parts of the clamp arm C and the clamp arm D are hinged to the main shaft sleeve.

[0008] The beneficial effects of the present invention are: the present invention changes the connection state (merging or separation) of slide one and slide two through the locking mechanism, so that the clamp has two different working states, which can grab calcium carbide and calcium carbide pot, and has high applicability: the locking mechanism can be adjusted only by the pulling force of the crane and the gravity of the clamp's own components, without the need for additional power, the structure is ingenious, and production costs are effectively saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of the embodiment of the present invention when the sliding sleeve 1 and the sliding sleeve 2 are separated;

[0010] Figure 2 Schematic diagram of the structure when the sliding sleeve 1 and the sliding sleeve 2 are combined in an embodiment of the present invention;

[0011] Figure 3 A quarter cross-sectional view of the sliding sleeve 1 and the sliding sleeve 2 when separated in an embodiment of the present invention;

[0012] Figure 4 for Figure 3 Detailed view at E in the middle;

[0013] Figure 5 A quarter cross-sectional view of the sliding sleeve 1 and the sliding sleeve 2 when combined in an embodiment of the present invention;

[0014] Figure 6 Based Figure 5 Detailed view at F in the middle;

[0015] Figure 7 Schematic diagram of the structure of the shaft sleeve assembly in an embodiment of the present invention;

[0016] Figure 8 A top cross-sectional view of a shaft sleeve assembly according to an embodiment of the present invention;

[0017] Figure 9 A top cross-sectional view of the connection structure of the sleeve assembly, caliper arm A, caliper arm B, caliper arm C, and caliper arm D in an embodiment of the present invention;

[0018] Figure 10Schematic diagram of the connection structure of the guide rod, connecting frame, sliding sleeve 1, connecting arm A, connecting arm B, clamp arm A, clamp arm B and central sleeve in an embodiment of the present invention;

[0019] Figure 11 Schematic diagram of the structure of the clamp arm A in an embodiment of the present invention;

[0020] Figure 12 Schematic diagram of the structure of the clamp arm B in an embodiment of the present invention.

[0021] Explanation of the accompanying figures: 1. Guide rod, 11. Connecting frame, 12. Bevel, 13. Groove, 2. Sleeve 1, 21. Lower flange, 22. Lower notch, 23. Lower ear plate, 24. Mounting port, 3. Sleeve 2, 31. Upper flange, 32. Upper notch, 33. Upper ear plate, 34. Locking port, 4. Sleeve, 41. Driving hook, 5. Connecting arm A, 51. Clamp arm A, 6. Connecting arm B, 61. Clamp arm B, 7. Connecting arm C, 71. Clamp arm C, 8. Connecting arm D, 81. Clamp arm D, 9. Bushing assembly, 91. Main bushing, 92. Secondary bushing, 93. Axle pin, 94. Wedge block, 95. Retaining ring, 10. Locking block, 101. Inner convex portion, 102. Hook block, 110. Bridge guide plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0023] Example:

[0024] like Figures 1-12As shown, a multifunctional clamp comprises a vertically arranged guide rod 1, on which a sliding sleeve 2, a sliding sleeve 2 and a sleeve 4 are slidably sleeved from bottom to top in sequence, the top of the sleeve 4 is closed and connected to a driving hook 41, the bottom end of the sleeve 4 and the top end of the sliding sleeve 2 3 are connected by a flange, the sliding sleeve 1 2 is detachably connected to the sliding sleeve 2 3 by a locking mechanism, the top of the sliding sleeve 1 2 is convex with a lower flange 21, and two lower notches 22 are symmetrically arranged on the lower flange 21, and the outer wall of the sliding sleeve 1 2 is symmetrically provided with two lower ear plates 23, the two lower The ear plate 23 is hinged with a connecting arm A5 and a connecting arm B6, which are tilted downward and symmetrical. The bottom ends of the connecting arm A5 and the connecting arm B6 are hinged with a clamp arm A51 and a clamp arm B61, respectively. The bottom of the sliding sleeve 3 is convex with an upper flange 31, and two upper notches 32 are symmetrically provided on the upper flange 31. The outer wall of the sliding sleeve 3 is symmetrically provided with two upper ear plates 33, and the two upper ear plates 33 are hinged with a connecting arm C7 and a connecting arm D8, respectively. The connecting arm C7 and the connecting arm D8 are tilted downward and symmetrical. The ends of the connecting arm C7 and the connecting arm D8 are hinged with the clamp arm C71 and the clamp arm D81 respectively. The bottom of the guide rod 1 is connected to the inverted U-shaped connecting frame 11. The connecting frame 11 is provided with a shaft sleeve assembly 9. The middle parts of the clamp arm A51 and the clamp arm B61 are hinged on the shaft sleeve assembly 9. The middle parts of the clamp arm C71 and the clamp arm D81 are hinged on the shaft sleeve assembly 9. The projections of the clamp arm A51 and the clamp arm C71 in the horizontal direction are set at a 45° angle. The lengths of the connecting arm A5, the connecting arm B, the connecting arm C7 and the connecting arm D8 are the same. The clamp arm A5 1. Clamp arms B61, C71, and D81 have the same length. The bottom ends of clamp arms A51, B61, C71, and D81 are all bent inward to have clamp hooks. When sliding sleeve 1 2 and sliding sleeve 2 3 are combined, the lower ear plate 23 is placed in the upper notch 32, and the upper ear plate 33 is placed in the lower notch 22. The hinge points of connecting arms A5, connecting arm B, connecting arm C7, and connecting arm D8 are flush and the distance from the guide rod 1 is the same. Clamp arms A51, B61, C71, and D81 rotate around the same point.

[0025] In this embodiment, the locking mechanism includes two mounting openings 24 circumferentially arranged on the inner wall of the sliding sleeve 1 2, a locking block 10 hinged in the mounting opening 24, two locking openings 34 circumferentially arranged on the inner wall of the sliding sleeve 2 3, two oblique openings 12 circumferentially arranged at the lower end of the side wall of the guide rod 1, and a bridge guide plate 110 hinged in the oblique opening 12. The mounting opening 24 passes through the sliding sleeve 1 2 upward, the locking block 10 is strip-shaped and the bottom end of the locking block 10 is hinged in the mounting opening 24, the top of the locking block 10 is placed outside the mounting opening 24 and the locking block 10 maintains a tendency to tilt toward the guide rod 1, the inner and outer sides of the top of the locking block 10 are respectively provided with an inner convex portion 101 and a hook block 102, the locking opening 34 and the oblique opening The positions of the openings 12 correspond to the locking blocks 10. The locking openings 34 are L-shaped. The two ends of the locking openings 34 pass through the bottom and side surfaces of the sliding sleeve 2 3 respectively. The upper part of the oblique opening 12 is concave with a groove 13. The bridge guide plate 110 is drop-shaped and the large diameter end of the bridge guide plate 110 is hinged in the groove 13. The small diameter end of the bridge guide plate 110 faces the outside of the guide rod 1 and can contact the locking block 10. When the upper end of the locking block 10 is completely placed in the locking opening 34, the locking block 10 can be hooked on the upper flange 31 by the hook block 102. At this time, the sliding sleeve 1 2 and the sliding sleeve 2 3 are merged. When the inner convex portion 101 of the locking block 10 is partially turned into the oblique opening 12, the sliding sleeve 1 2 and the sliding sleeve 2 3 can be separated.

[0026] In this embodiment, the shaft sleeve assembly 9 includes a main shaft sleeve 91, a secondary shaft sleeve 92, an axle pin 93 and two wedge blocks 94. The radius of the secondary shaft sleeve 92 is smaller than that of the main shaft sleeve 91. Both ends of the main shaft sleeve 91 are protruded with retaining rings 95. One retaining ring 95 is screwed to the main shaft sleeve 91, and the other retaining ring 95 is integrally formed on the main shaft sleeve 91. The two wedge blocks 94 are welded to the inner wall of the main shaft sleeve 91 and are rotationally symmetrical around the axis of the guide rod 1. The opposite back surfaces of the two wedge blocks 94 are flush with the end surface of the main shaft sleeve 91. The two wedge blocks 94 are commonly connected with the axle pin 93 and the axle pin 93 The end portion extends to the outside of the main shaft sleeve 91, and the axle pin 93 outside the main shaft sleeve 91 is connected to the two arms of the connecting frame 11. The two wedge blocks 94 respectively contact the two arms of the connecting frame 11. A secondary shaft sleeve 92 is sleeved on the axle pin 93 between the two wedge blocks 94. The axis of the secondary shaft sleeve 92 intersects with the axis of the main shaft sleeve 91 and is arranged at a 45° angle. The middle parts of the clamp arm A51 and the clamp arm B61 are both hinged to the secondary shaft sleeve 92, and the middle parts of the clamp arm C71 and the clamp arm D81 are both hinged to the main shaft sleeve 91. The retaining ring 95 can prevent the clamp arm C71 and the clamp arm D81 from separating from the main shaft sleeve 91.

[0027] In actual use, the entire clamp is hung on the hook of the crane using the crane hook 41, with the sliding sleeve 1 2 and the sliding sleeve 2 3 combined as the initial state. The outer end of the bridge guide plate 110 is placed on the outer bottom edge of the groove 13 under the action of gravity. The angle between the clamp arms A51 and B61 is the same as the angle between the clamp arms C71 and D81. When grabbing the calcium carbide pot, the clamp arms A51, B61, C71 and D81 are placed on the edge of the calcium carbide pot and the sliding sleeve 1 is sunk to the guide. Towards the bottom of the rod 1, the outer end of the bridge guide plate 110 is placed on the inner convex part 101. At this time, the upper end of the locking block 10 is placed in the locking mouth 34 and the hook block 102 is located above the upper flange 31. The sleeve 4 is pulled up. As the locking block 10 moves upward, the bridge guide plate 110 keeps in contact with the inner convex part 101 to prevent the inner convex part 101 from falling into the oblique mouth 12. The upper flange 31 presses the hook block 102 upward to prevent the sliding sleeve 2 from separating from the sliding sleeve 2 3. As the sleeve 4 moves upward, the clamp arm A51, the clamp arm B61, and the clamp arm C When the clamp arm A51, B61, C71 and D81 are placed on the edge of the calcium carbide pot and the sliding sleeve 2 is sunk to the oblique opening 12, so that the locking block 10 is tilted toward the guide rod 1 under the action of gravity. When the inner convex portion 101 is poured into the oblique opening 12 and the hook block 102 is not placed above the upper flange 31, the sleeve 4 is pulled upwards. At this time, the sliding sleeve Slide 2 3 can be separated from slide 1 2. When slide 2 3 is separated from slide 1 2, the entire clamp is moved horizontally to make the clamp leave the calcium carbide pot, and then the sleeve 4 is pulled up to reduce the angle between clamp arm C71 and clamp arm D81. Clamp arm A51 and clamp arm B61 remain stationary due to lack of pulling force. At this time, clamp arm C71 and clamp arm D81 can be extended into the calcium carbide pot and placed on the calcium carbide. The gravity of the entire clamp is used to open the clamp arm C71 and clamp arm D81, and then the sleeve 4 is pulled up to clamp the calcium carbide.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional clamp, characterized in that: The invention comprises a vertically arranged guide rod (1) and a locking mechanism, wherein a sliding sleeve (2), a sliding sleeve (3) and a sleeve (4) are slidingly sleeved on the guide rod (1) from bottom to top in sequence, and the sliding sleeve (3) is fixedly connected to the sleeve (4). The locking mechanism comprises a plurality of mounting openings (24) circumferentially arranged on the inner wall of the sliding sleeve (2), a locking block (10) hinged in the mounting opening (24), a plurality of locking openings (34) circumferentially arranged on the inner wall of the sliding sleeve (3), a plurality of oblique openings (12) circumferentially arranged on the side wall of the guide rod (1), and a bridge guide plate (110) hinged in the oblique opening (12), wherein the movable end of the locking block (10) is placed on the inner wall of the sliding sleeve (2). The mounting opening (24) is outside the locking opening (10) and the locking block (10) maintains a tendency to tilt toward the guide rod (1). The positions of the locking opening (34) and the oblique opening (12) correspond to the locking block (10). The movable end of the bridge guide plate (110) can contact the locking block (10). When the movable end of the locking block (10) is placed in the locking opening (34), the sliding sleeve 1 (2) and the sliding sleeve 2 (3) are merged. When the movable end of the locking block (10) is partially rotated into the oblique opening (12), the sliding sleeve 1 (2) and the sliding sleeve 2 (3) can be separated. A driving hook (41) is provided on the top of the sleeve (4). A connecting arm A (5) and a connecting arm B (6) are symmetrically hinged on the sliding sleeve 1 (2). The ends of the connecting arm A (5) and the connecting arm B (6) are hinged with the clamp arm A (51) and the clamp arm B (61) respectively. The connecting arm C (7) and the connecting arm D (8) are symmetrically hinged on the sliding sleeve 2 (3). The ends of the connecting arm C (7) and the connecting arm D (8) are hinged with the clamp arm C (71) and the clamp arm D (81) respectively. The bottom of the guide rod (1) is connected to the shaft sleeve assembly (9) through the connecting frame (11). The shaft sleeve assembly (9) includes a main shaft sleeve (91), a secondary shaft sleeve (92), an axle pin (93) and two wedge blocks (94). The two ends of the main shaft sleeve (91) are protruding with retaining rings (95). The two wedge blocks (94) The two wedge blocks (94) are welded to the inner wall of the main shaft sleeve (91) and are rotationally symmetrical around the axis of the guide rod (1). The two wedge blocks (94) are commonly connected to the shaft pin (93) and the end of the shaft pin (93) extends to the outside of the main shaft sleeve (91). The shaft pin (93) outside the main shaft sleeve (91) is connected to the connecting frame (11). The secondary shaft sleeve (92) is sleeved on the shaft pin (93) between the two wedge blocks (94). The middle parts of the clamp arm A (51) and the clamp arm B (61) are both hinged to the secondary shaft sleeve (92), and the middle parts of the clamp arm C (71) and the clamp arm D (81) are both hinged to the main shaft sleeve (91).

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