Coupling with oblique locking structure

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a coupler with an inclined locking structure, which comprises a movable telescopic structure, a fixed locking structure and a coupling tube, the coupling tube is fixedly connected to one end of a crane frame, and the movable telescopic structure is sleeved in the coupling tube. The movable telescopic structure comprises a guide block, a clamping block, swing connecting rods, a coupling base and a multi-head push-pull rod, the multi-head push-pull rod is in sliding connection with an insertion groove of the guide block, a plurality of second connecting grooves are formed in the outer side of the multi-head push-pull rod, each second connecting groove is connected with one ends of the two swing connecting rods, and the other ends of the two swing connecting rods are connected with the clamping block. Compared with the prior art, the clamping block structure strengthens the tensile strength facing longitudinal tension, the locking fastener structure strengthens the bending strength for transverse bending, the two parts of the coupler can take back the clamping block by taking off the fastener and the swing connecting rod in the clamping block, and the coupler can be disassembled by continuously pulling the push-pull rod upwards. And each part can be quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a coupling with an oblique locking structure. Background Art

[0002] Couplings are usually used in the transmission of shafts. In the field of automobile maintenance, couplings are often used in cranes to achieve axial force support when lifting cars. After long-term operation, the crane coupling will gradually cause wear due to frequent friction. After a certain amount of wear, the coupling is easily damaged and scrapped, causing heavy objects to fall off, which will pose a life threat to the workers. If the coupling is damaged, it needs to be replaced entirely, which is inconvenient and costly. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the utility model provides a coupling with an oblique locking structure. The coupling can be double locked by inserting a card block into the gap between the two parts of the coupling and then fixing it with a lock buckle and a protrusion at the bottom of the card block, which greatly improves the strength of the coupling and is convenient for disassembly.

[0004] To achieve the above-mentioned purpose, a coupling with an oblique locking structure is designed, including a movable telescopic structure, a fixed locking structure, and a coupling tube. The coupling tube is fixedly connected to one end of the crane frame, and a movable telescopic structure is sleeved inside the coupling tube. The movable telescopic structure is pushed to the bottom of the coupling tube and engaged and fixed with the coupling tube. The fixed locking structure is flipped up to lock the coupling tube and the movable telescopic structure. The movable telescopic structure includes a guide block, a clamping block, a swing connecting rod, a coupling base, and a multi-head push-pull rod. The coupling base is fixedly connected to the bottom of the guide block, and the multi-head push-pull rod is slidably connected to the slot of the guide block. A number of connecting grooves 2 are provided on the outside of the multi-head push-pull rod, and each connecting groove 2 is connected to one end of two swing connecting rods. The clamping block is swingably connected to the multi-head push-pull rod through the swing connecting rod.

[0005] The multi-head push-pull rod is provided with a plurality of push-pull heads, and the number of the push-pull heads can be two, three or more. A connecting handle is provided above the multi-head push-pull rod, and the upper end of the connecting handle is fixedly connected to the crane frame.

[0006] The number of the card blocks is consistent with the number of the push-pull heads. The card block structure is a cone, and the width gradually widens towards the bottom. A groove is provided at the bottom of the card block, and an insert is provided inside the groove.

[0007] A connecting groove 1 is provided on the inner side of the clamping block, and the two ends of the swing connecting rod are rotatably connected to the connecting groove 1 and the connecting groove 2 by bolts.

[0008] The fixed locking structure can be a fastener, one end of which is rotatably connected to the rotating seat outside the coupling base, and the fastener can be matched with the inserting block of the clamping block.

[0009] The guide block is provided with a circular through hole, and a convex block matching the circular through hole is provided at the center of the upper surface of the coupling base. The guide block is connected to the coupling base by inserting the convex block into the circular through hole.

[0010] Compared with the prior art, the block structure of the utility model enhances the tensile strength against longitudinal tension, and the locking fastener structure enhances the bending strength against lateral bending. The two parts of the coupling can be disengaged by disengaging the fastener and pulling up the push-pull rod. The swing connecting rod inside the block retracts the block, and the coupling can be disassembled by continuing to pull up the push-pull rod, and the various components can be quickly replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] Figure 2 It is a top view of the utility model.

[0013] Figure 3 This is a cross-sectional view of the utility model.

[0014] Figure 4 It is a schematic diagram of the card block.

[0015] Figure 5 Schematic diagram of the card block extension.

[0016] Figure 6 Schematic diagram of a multi-head push-pull rod.

[0017] See also Figures 1 to 6 , 1 is the guide block, 1.1 is the slot, 1.2 is the circular through hole, 2 is the card block, 2.1 is the groove, 2.2 is the insert block, 2.3 is the connecting groove one, 3 is the swing link, 4 is the coupling base, 4.1 is the coupling chassis, 4.2 is the rotating seat, 5 is the coupling tube, 6 is the bolt, 7 is the fastener, 8 is the multi-head push-pull rod, 8.1 is the connecting handle, and 8.2 is the connecting groove two. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the coupling tube 5 is fixedly connected to one end of the crane frame, and a movable telescopic structure is sleeved inside the coupling tube 5. The movable telescopic structure can be pushed to the bottom of the coupling tube 5 to be engaged and fixed with the coupling tube 5. The fixed locking structure is flipped up to lock the coupling tube 5 with the movable telescopic structure, as shown in FIG. Figure 2As shown, the movable telescopic structure includes a guide block 1, a card block 2, a swing link 3, a coupling base 4, and a multi-head push-pull rod 8. The coupling base 4 is fixedly connected to the bottom of the guide block 1. The multi-head push-pull rod 8 is slidably connected to the slot 1.1 of the guide block 1. The slot 1.1 guides the multi-head push-pull rod 8 and provides a certain shrinkage space for the card block 2 to retract. A plurality of connecting grooves 8.2 are provided on the outside of the multi-head push-pull rod 8. Each connecting groove 8.2 is connected to one end of two swing links 3. The card block 2 is swingably connected to the multi-head push-pull rod 8 through the swing link 3. The swing link 3 enables the card block 2 to swing up and down to realize its telescopic function.

[0020] The multi-head push-pull rod 8 is provided with several push-pull heads, and the number of push-pull heads can be two, three or more. A connecting handle 8.1 is provided above the multi-head push-pull rod, and the upper end of the connecting handle 8.1 is fixedly connected to the crane frame. The number of push-pull heads is preferably an even number. When it is an even number of push-pull heads, the locking force of the corresponding number of card blocks 2 extending outward can balance each other.

[0021] The number of the card blocks 2 is the same as that of the push-pull head. The card blocks 2 are of cone structure. The card blocks 2 become wider as they approach the bottom. A groove 2.1 is provided at the bottom of the card block 2, and an insert block 2.2 is provided inside the groove 2.1.

[0022] A connecting groove 2.3 is provided on the inner side of the clamping block 2. The two ends of the swing link 3 are rotatably connected to the connecting groove 2.3 and the connecting groove 2 8.2 by bolts 6, so that the clamping block 2 can complete a certain degree of expansion and contraction under the push and pull of the multi-head push-pull rod 8.

[0023] The fixed locking structure can be a fastener 7, one end of which is rotatably connected to the rotating seat 4.2 on the outside of the coupling base 4. When the fastener 7 is flipped up, it can be connected and fixed with the plug-in block 2.2 of the block 2. The fastener 7 plays a role in limiting the upper and lower directions of the block 2, which can be further.

[0024] The guide block 1 is provided with a circular through hole 1.2, and a protrusion matching the circular through hole 1.2 is provided at the center of the upper surface of the coupling base 4. By inserting the protrusion into the circular through hole, the guide block 1 is connected to the coupling base 4. The guide block 1 is connected to the coupling base 4 from the inside, and the guide block 1 and the multi-head push-pull rod 8 cooperate to connect the entire coupling.

[0025] The specific connection process of the utility model is as follows Figure 4 、 Figure 5As shown, the initial block 2 in the shrink in the shaft coupling 5, multi-head push-pull rod 8 lifting state, when the shaft coupling work, will multi-head push-pull rod 8 along the guide block 1 slot down, block 2 will first encounter the shaft coupling base 4, by the shaft coupling base 4 limit therefore block 2 can't move down, due to the swing connecting rod 3, block 2 force extension and the upper end will shaft coupling 5 card, realize the occlusion of shaft coupling 5, at this time, rotate up the buckle 7, the plug 2.2 insert block in the gap between the buckle 7 to achieve locking and fixing, because the shaft coupling 5 and multi-head push-pull rod 8 connection on the upper half, the shaft coupling base 4 connection lower half, can play the purpose of lifting heavy objects, and need to loosen when only need to buckle 7 down to the original position, multi-head push-pull rod 8 pull, block 2 back to shrink, wherein the structure block 2, multi-head push-pull rod 8 can be quickly replaced if damaged, simple and fast to complete the transmission work.

Claims

1. A coupling with an oblique locking structure, comprising a movable telescopic structure, a fixed locking structure, and a coupling tube, characterized in that: The coupling tube (5) is fixedly connected to one end of the crane frame. A movable telescopic structure is sleeved inside the coupling tube (5). The movable telescopic structure is pushed to the bottom of the coupling tube (5) and engaged with the coupling tube. The fixed locking structure is flipped up to lock the coupling tube (5) and the movable telescopic structure. The movable telescopic structure includes a guide block (1), a clamping block (2), a swing connecting rod (3), a coupling base (4), and a multi-head push-pull rod (8). The coupling base (4) is fixedly connected below the guide block (1). The multi-head push-pull rod (8) is slidably connected to the guide block (1). A plurality of connecting grooves (8.2) are provided on the outside of the multi-head push-pull rod (8). Each connecting groove (8.2) is connected to one end of two swing connecting rods (3). The clamping block (2) is swingably connected to the multi-head push-pull rod (8) through the swing connecting rod (3).

2. The coupling with an oblique locking structure according to claim 1, characterized in that: The multi-head push-pull rod (8) is provided with a plurality of push-pull heads, and the number of the push-pull heads can be two, three or more. A connecting handle (8.1) is provided above the multi-head push-pull rod, and the upper end of the connecting handle (8.1) is fixedly connected to the crane frame.

3. The coupling with an oblique locking structure according to claim 1, characterized in that: The number of the card blocks (2) is the same as that of the push-pull head. The card blocks (2) are of a cone structure. The card blocks (2) gradually become wider as they approach the bottom. A groove (2.1) is provided at the bottom of the card block (2), and an insert block (2.2) is provided inside the groove (2.1).

4. The coupling with an oblique locking structure according to claim 1, characterized in that: A connecting groove 1 (2.3) is provided on the inner side of the clamping block (2), and the two ends of the swing link (3) are rotatably connected to the connecting groove 1 (2.3) and the connecting groove 2 (8.2) via bolts (6).

5. The coupling with an oblique locking structure according to claim 1, characterized in that: The fixed locking structure can be a fastener (7), one end of which is rotatably connected to a rotating seat (4.2) outside the coupling base (4), and the fastener (7) can be connected in a cooperative manner with the insert block (2.2) of the clamping block (2).

6. The coupling with an oblique locking structure according to claim 1, characterized in that: The guide block (1) is provided with a circular through hole (1.2), and a protrusion matching the circular through hole (1.2) is provided at the center of the upper surface of the coupling base (4). By inserting the protrusion into the circular through hole (1.2), the guide block (1) is connected to the coupling base (4).

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