Adjustable spacing spreader clamp

Abstract

The utility model discloses a kind of adjustable spacing formula lifting appliance clamps and grabs, including square tube, the upside of square tube is provided with connecting piece, the both ends of square tube are equipped with end cap, the middle part of square tube is provided with middle baffle, end cap is rotatably provided with bar, outer thread is set on the outer side of bar, the inner end of bar is rotatably arranged on middle baffle, the front side middle part of square tube is detachably equipped with first grab hook plate, the both ends of bar are slidably equipped with second grab hook plate, the both ends of square tube are provided with vertical through rectangular sliding mouth, through plate is provided on second grab hook plate and passes through rectangular sliding mouth, through plate middle part is provided with screw rod nut with outer thread thread cooperation.The adjustable spacing formula lifting appliance clamps and grabs can conveniently adjust the spacing between hook plate by rotating the both ends of bar.

Description

Technical Field

[0001] This utility model relates to the field of lifting devices, specifically to an adjustable spacing lifting device clamp. Background Technology

[0002] Pipe lifting equipment is a device installed on lifting equipment or overhead cranes for lifting large pipes and moving them to the required location.

[0003] The pipe fitting lifter has jaws installed at both ends. There are three common types of jaws: one is hinged to both ends of the lifting beam, and the upper end of the jaw is rotated to open and close; another is parallel sliding connection between the two ends of the lifting beam, and the jaws are pushed and pulled by the swing arm to open and close; and the third is to grip the two ends of the pipe fitting in a ring-like manner.

[0004] Patent CN212050143U discloses a lifting claw fixing structure for construction hoisting machinery, including a lifting claw body and a connecting piece. A fixing block is fixedly welded to the top of the lifting claw body, and a lifting ring is movably provided on the top of the fixing block. An iron chain is fixedly welded to the top of the connecting piece, and a spring groove is provided on the side of the connecting piece. The inner wall end face of the spring groove is fixedly connected to one end of the spring, and a locking post is fixedly connected to the other end of the spring. A sliding groove is provided at the bottom of the connecting piece, and a lever is movably provided in the sliding groove. An installation channel is provided on the top of the lifting ring.

[0005] The lifting claw fixing structure of the building hoisting machinery is equipped with a claw body at both ends. The claw body is a single hook structure, which cannot simultaneously grab multiple pipes, nor can it adjust the hook left and right. Utility Model Content

[0006] The purpose of this utility model is to provide an adjustable spacing lifting clamp. This adjustable spacing lifting clamp is used in pairs and is symmetrically installed at both ends of the lifting beam. By rotating the rods at both ends, the spacing between the hook plates can be easily adjusted, and multiple pipes can be hooked at the same time for lifting. Since the spacing between the hook plates can be adjusted, pipes of different diameters can be lifted.

[0007] To achieve the above objectives, this utility model provides an adjustable spacing lifting clamp, comprising a square tube, a connector on the upper side of the square tube, end caps installed at both ends of the square tube, a middle partition plate in the middle of the square tube, a rod rotatably mounted on the end cap, an external thread on the outer side of the rod, and an inner end rotatably mounted on the middle partition plate. A first grabbing plate is detachably mounted on the middle of the front side of the square tube, and a second grabbing plate is slidably sleeved on both ends of the rod. Vertically penetrating rectangular sliding openings are provided at both ends of the square tube. A through plate penetrating the rectangular sliding openings is provided on the second grabbing plate, and a screw nut that engages with the external thread is provided in the middle of the through plate.

[0008] Preferably, the second grabbing hook plate is provided with a square hole that slides with the square tube, the through plate is vertically disposed in the square hole, and ear plates are fixedly connected to the left and right sides of the edge of the square hole on the second grabbing hook plate. The ear plates are provided with screw holes, and clamping screws are installed in the screw holes.

[0009] Preferably, the end cap includes a cover plate and an insertion block inserted into the square tube. Bearings are embedded at both ends of the end cap. The outer end of the rod is inserted into the bearing. The outer end of the rod protrudes at least partially from the cover plate and has flat key surfaces on both sides.

[0010] Preferably, the outer end of the rectangular sliding opening is open, and countersunk holes are provided on both sides of the rectangular sliding opening on the square tube. The insertion block is provided with threaded holes corresponding to the countersunk holes, and an internal hexagon screw that can be screwed into the threaded hole is inserted into the countersunk hole.

[0011] Preferably, a guide strip is provided on the inner side of the square tube at the countersunk hole, the countersunk hole is provided through the guide strip, and a guide groove is provided on the insertion block to slide with the guide strip.

[0012] Preferably, the partition plate has shaft holes on both sides to allow the inner end of the rod to rotate.

[0013] Preferably, two mounting plates are symmetrically arranged on the front side of the square tube, and the first hook plate is inserted into the gap between the two mounting plates and locked by locking bolts.

[0014] Preferably, the bottom of the first gripping hook plate is provided with a rearwardly extending first hook body, and the bottom of the second gripping hook plate is provided with a rearwardly extending second hook body corresponding to the first hook body.

[0015] Preferably, the connector includes a connector base, with pins inserted at the front and rear ends of the connector base, and sliding bushings fitted at both ends of the pins.

[0016] According to the above technical solution, this utility model provides an adjustable spacing lifting clamp, including a square tube, a connector on the upper side of the square tube, end caps installed at both ends of the square tube, a middle partition plate in the middle of the square tube, a rod rotatably mounted on the end cap, an external thread on the outer side of the rod, and an inner end rotatably mounted on the middle partition plate. A first grabbing plate is detachably mounted on the middle of the front side of the square tube, and a second grabbing plate is slidably sleeved on both ends of the rod. Vertical rectangular sliding openings are provided at both ends of the square tube, and a through plate is provided on the second grabbing plate that passes through the rectangular sliding opening. A screw nut that engages with the external thread is provided in the middle of the through plate.

[0017] This adjustable spacing lifting clamp is used in pairs and is symmetrically installed at both ends of the lifting beam. By rotating the rods at both ends, the spacing between the hook plates can be easily adjusted, allowing multiple pipe fittings to be hooked and lifted at the same time. Since the spacing between the hook plates is adjustable, it can be used to lift pipe fittings of different diameters.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a front overall structural diagram of a preferred embodiment of an adjustable spacing lifting clamp;

[0021] Figure 2 This is a rear overall structure diagram of a preferred embodiment of an adjustable spacing lifting clamp;

[0022] Figure 3 This is a rear view of a preferred embodiment of an adjustable-spacing lifting clamp.

[0023] Figure 4 yes Figure 3 A schematic diagram of the AA cross-sectional structure;

[0024] Figure 5 yes Figure 3 A schematic diagram of the BB cross-sectional structure;

[0025] Figure 6 yes Figure 3 A schematic diagram of the CC cross-sectional structure.

[0026] Explanation of reference numerals in the attached figures

[0027] 1-Square tube; 2-Rectangular sliding opening; 3-Cover plate; 4-Hex socket screw; 5-Insertion block; 6-Flat key surface; 7-Second grab hook plate; 8-Through plate; 9-First hook body; 10-First grab hook plate; 11-Mounting plate; 12-Locking bolt; 13-Second hook body; 14-Ear plate; 15-Pressure screw; 16-Connecting seat; 17-Sliding bushing; 18-Bearing; 19-Screw nut; 20-External thread; 21-Partition plate; 22-Rod; 23-Guide strip; 24-Shaft hole. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0030] See Figure 1-6 The adjustable spacing lifting clamp shown includes a square tube 1, with a connector on the upper side of the square tube 1, end caps installed at both ends of the square tube 1, a middle partition 21 in the middle of the square tube 1, a rod 22 rotatably mounted on the end cap, an external thread 20 on the outer side of the rod 22, and an inner end rotatably mounted on the middle partition 21. A first hook plate 10 is detachably mounted on the middle of the front side of the square tube 1, and a second hook plate 7 is slidably sleeved on both ends of the rod 22. Vertically penetrating rectangular sliding openings 2 are provided at both ends of the square tube 1, and a through plate 8 penetrating the rectangular sliding openings 2 is provided on the second hook plate 7. A screw nut 19 threadedly engaged with the external thread 20 is provided in the middle of the through plate 8.

[0031] Through the implementation of the above technical solution, the adjustable-spacing lifting clamp is used in pairs, symmetrically installed at both ends of the lifting beam. By rotating the rods 22 at both ends, the spacing between the hook plates can be easily adjusted, allowing multiple pipe fittings to be hooked and lifted simultaneously. Since the spacing between the hook plates is adjustable, pipe fittings of different diameters can be lifted. For example, in one scenario, a connector is used to connect to the lifting beam and slides with it. The lifting beam is also equipped with a swing arm hinged to the connector, which is used to push the connector to slide on the lifting beam to adjust the hook spacing, thereby enabling the hook plates at both ends to hook onto or detach from the pipe fittings.

[0032] In this embodiment, the second hook plate 7 is provided with a square hole that slides with the square tube 1. The through plate 8 is vertically disposed in the square hole. Ear plates 14 are fixedly connected to the left and right sides of the edge of the square hole on the second hook plate 7. The ear plates 14 are provided with screw holes, and clamping screws 15 are installed in the screw holes. With this arrangement, after the second hook plate 7 is adjusted to the position, the clamping screws 15 are tightened to lock the second hook plate 7 to the side of the square tube 1, thereby increasing the stability of the second hook plate 7.

[0033] In this embodiment, the end cap includes a cover plate 3 and an insertion block 5 inserted into the square tube 1. Bearings 18 are embedded at both ends of the end cap. The outer end of the rod 22 is inserted into the bearings 18, and at least partially protrudes from the cover plate 3, with flat key surfaces 6 on both sides. With this configuration, the rod 22 can be rotated by clamping the flat key surfaces 6 on both sides with a wrench. During rotation, the second hook plate 7 can slide and adjust its position due to the engagement of the external thread 20 and the lead screw nut 19. The bearings 18 reduce the frictional resistance of the rod 22 during rotation.

[0034] In this embodiment, the outer end of the rectangular sliding opening 2 is open, and countersunk holes are provided on both sides of the rectangular sliding opening 2 on the square tube 1. The insertion block 5 is provided with threaded holes corresponding to the countersunk holes, and an internal hexagon screw 4 that can be screwed into the threaded hole is inserted into the countersunk hole. With this arrangement, the insertion block 5 is locked and fixed to the end of the square tube 1 by the internal hexagon screw 4, so as to achieve detachability.

[0035] In this embodiment, a guide strip 23 is provided on the inner side of the square tube 1 at the countersunk hole, and the countersunk hole passes through the guide strip 23. The insertion block 5 is provided with a guide groove that slides with the guide strip 23. This arrangement provides installation guidance and increases the structural strength at the countersunk hole and the connection between the two ends of the square tube 1.

[0036] In this embodiment, the partition plate 21 has shaft holes 24 on both sides to provide rotation for the inner end of the rod 22. The shaft holes 24 provide rotational support for the end of the rod 22. Alternatively, a bearing 18 can be installed in the shaft hole 24, and the inner end of the rod 22 can be inserted into the bearing 18 to improve lubrication.

[0037] In this embodiment, to further provide an installation structure for the first hook plate 10, two mounting plates 11 are symmetrically arranged on the front side of the square tube 1. The first hook plate 10 is inserted into the gap between the two mounting plates 11 and locked in place by locking bolts 12. Both the mounting plates 11 and the first hook plate 10 are provided with mounting through holes corresponding to the locking bolts 12.

[0038] In this embodiment, the bottom of the first hook plate 10 is provided with a rearwardly extending first hook 9, and the bottom of the second hook plate 7 is provided with a rearwardly extending second hook 13 corresponding to the first hook 9. The first hook 9 and the second hook 13 are positioned correspondingly, at the same height, and in the same front-to-back position.

[0039] In this embodiment, the connector includes a connecting seat 16, with pins inserted into its front and rear ends, and sliding bushings 17 sleeved at both ends of the pins. The connecting seat 16 and the sliding bushings 17 allow the connector to be slidably installed in the grooves at both ends of the lifting beam.

[0040] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0042] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An adjustable spacing lifting clamp, characterized in that, The adjustable spacing type lifting clamp includes a square tube (1), a connector is provided on the upper side of the square tube (1), end caps are installed at both ends of the square tube (1), a middle partition plate (21) is provided in the middle of the square tube (1), a rod (22) is rotatably provided on the end cap, an external thread (20) is provided on the outer side of the rod (22), the inner end of the rod (22) is rotatably provided on the middle partition plate (21), a first grab plate (10) is detachably installed in the middle of the front side of the square tube (1), a second grab plate (7) is slidably sleeved on both ends of the rod (22), a vertically penetrating rectangular sliding mouth (2) is provided at both ends of the square tube (1), a through plate (8) is provided on the second grab plate (7) that penetrates the rectangular sliding mouth (2), and a screw nut (19) that is threadedly engaged with the external thread (20) is provided in the middle of the through plate (8).

2. The adjustable spacing lifting clamp according to claim 1, characterized in that, The second hook plate (7) is provided with a square hole that slides with the square tube (1), and the through plate (8) is vertically arranged in the square hole; The second hook plate (7) is fixed with ear plates (14) on the left and right sides of the edge of the square hole. The ear plates (14) are provided with screw holes, and clamping screws (15) are installed in the screw holes.

3. The adjustable spacing lifting clamp according to claim 1, characterized in that, The end cap includes a cover plate (3) and an insertion block (5) inserted into the square tube (1); Both ends of the end cap are fitted with bearings (18), and the outer end of the rod (22) is inserted into the bearings (18); The outer end of the rod (22) protrudes at least partially from the cover plate (3) and has flat key surfaces (6) on both sides.

4. The adjustable spacing lifting clamp according to claim 3, characterized in that, The outer end of the rectangular sliding opening (2) is set as an open opening. The square tube (1) is provided with countersunk holes on both sides of the rectangular sliding opening (2). The insertion block (5) is provided with a threaded hole corresponding to the countersunk hole. An internal hexagon screw (4) that can be screwed into the threaded hole is inserted into the countersunk hole.

5. The adjustable spacing lifting clamp according to claim 4, characterized in that, A guide strip (23) is provided on the inner side of the square tube (1) at the countersunk hole; The countersunk hole is provided through the guide bar (23), and the insertion block (5) is provided with a guide groove that slides with the guide bar (23).

6. The adjustable spacing lifting clamp according to claim 1, characterized in that, The partition plate (21) has shaft holes (24) on both sides to allow the inner end of the rod (22) to rotate.

7. The adjustable spacing lifting clamp according to claim 1, characterized in that, Two mounting plates (11) are symmetrically arranged on the front side of the square tube (1). The first hook plate (10) is inserted into the gap between the two mounting plates (11) and locked by locking bolts (12).

8. The adjustable spacing lifting clamp according to claim 1, characterized in that, The bottom of the first hook plate (10) is provided with a rearwardly extending first hook body (9), and the bottom of the second hook plate (7) is provided with a rearwardly extending second hook body (13) corresponding to the first hook body (9).

9. The adjustable spacing lifting clamp according to claim 1, characterized in that, The connector includes a connector (16), with pins inserted at the front and rear ends of the connector (16), and sliding bushings (17) sleeved at both ends of the pins.

Images