Double-lock hydraulic type automatic connector

Abstract

The utility model discloses a double-lock hydraulic type automatic connector, belongs to the technical field of connectors, and solves the problem that an existing single-lock automatic connector is low in safety performance. The device comprises a connecting body, a tensioning oil cylinder is arranged in the connecting body, one end of the connecting body is connected with a limiting sliding block in a sliding mode, a hook is arranged at the other end of the connecting body, rear locking blocks are rotatably installed on the two sides of the connecting body above the hook, and one end of a small cavity of the tensioning oil cylinder is connected with the limiting sliding block. A concave hook groove is formed in one side of the lower portion of the limiting sliding block, two linkage shafts arranged at intervals are arranged on the two sides of one end of a large cavity of the tensioning oil cylinder, a linkage rod is arranged on the top of each rear locking block, and the linkage rods are movably inserted between the two linkage shafts on the same side. The bottom of each rear locking block is provided with a clamping groove which is arranged in a concave mode, and the linkage shaft is connected with the connecting body in a sliding mode. The connector provided by the utility model meets the requirement of quick replacement of accessories, and enables the connection of the accessories to be safer and more reliable at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more particularly to a double-lock hydraulic automatic connector. Background Art

[0002] The main function of connectors in the field of construction machinery is to enable the quick interchange of buckets and various rakes, claws and other tools (collectively referred to as accessories) through the two-way connection of the connector, thereby meeting the rapid switching of various working conditions and realizing multi-purpose use of one machine. In today's field of construction machinery, they are already quite common and come in a variety of types.

[0003] Currently, the market primarily utilizes mechanical and hydraulic connectors. Hydraulic connectors are mostly single-lock automatic connectors, which offer relatively low safety performance. Once the locking function fails, they can easily become loose and fall, posing a safety hazard. In today's era of focused engineering, operational, and personal safety, existing automatic connectors struggle to meet these demands.

[0004] Therefore, it is urgent to design a double-lock hydraulic automatic connector to solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a double-lock hydraulic automatic connector in view of the above-mentioned deficiencies in the prior art, which can meet the requirements of rapid replacement of accessories while making the connection of accessories safer and more reliable.

[0006] The cam is fixedly mounted on the support frame of the vehicle frame, and the cam is fixedly mounted on the support frame of the vehicle frame.

[0007] As a further improvement, the connector is H-shaped, comprising two ear plates and a connecting plate. The two ear plates are symmetrically arranged, and the connecting plate is horizontally connected to the middle position of the two ear plates. The tensioning cylinder, limit slider, rear locking block, and tensioning spring are all located between the two ear plates below the connecting plate, and the hook is integrally formed at the bottom of the two ear plates.

[0008] Furthermore, an avoidance hole is provided in the middle of the connecting plate.

[0009] Furthermore, a T-shaped guide slide is provided on the top of the limit slider, and a guide groove is provided on the inner wall of one end of the two ear plates. The two sides of the top of the guide slide are slidably connected to the guide groove, and one end of the small cavity of the tensioning cylinder and one end of the tensioning spring are connected to the lower part of the guide slide. The limit platform is located at one end of the guide groove close to the middle position of the ear plate.

[0010] Furthermore, the guide chute passes through the end of the ear plate, and a front baffle for blocking the guide chute is detachably installed between the ends of the two ear plates.

[0011] Furthermore, there are two tensioning springs, each of which is inserted with a guide rod, one end of which is connected to one end of the large cavity of the tensioning cylinder, and the other end is slidably inserted in the guide slide.

[0012] Furthermore, a supporting plate is provided between the two ear plates below the connecting plate, and the tensioning oil cylinder is located between the supporting plate and the connecting plate.

[0013] Furthermore, the inner walls of the other ends of the two ear plates are each provided with a limiting sliding groove, and one of the linkage shafts on both sides of the tensioning cylinder is slidably installed in the limiting sliding groove.

[0014] Furthermore, the two linkage shafts corresponding to the same side of the tensioning cylinder are arranged in an up-down staggered manner.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The double-lock hydraulic automatic connector of the present invention is configured with a tensioning oil cylinder and a tensioning spring in the connecting body. When the attachment is released, the tensioning oil cylinder works and contracts. Since the tensioning spring is in a stretched state at this time and the weight of one end of the large cavity of the tensioning oil cylinder is large, the friction between it and the connecting body is large. Therefore, under the elastic force of the tensioning spring, the small cavity end of the tensioning oil cylinder retracts first, driving the limit slider to slide and unlock one end of the attachment first. When the limit slider moves to the limit platform position, the limit slider cannot continue to slide, and the tensioning oil cylinder continues to retract. The large cavity end of the tensioning oil cylinder begins to retract, driving the two linkage shafts to move. The linkage shaft located at the rear side drives the linkage rod to move, and the linkage rod drives the rear locking block to swing, so that the card slot of the rear locking block swings upward away from the other end of the attachment, thereby first unlocking the limit slider and then unlocking the rear locking block. This avoids the direct disengagement of the attachment caused by the simultaneous opening of the double locks, which may cause damage and certain safety accidents. When installing the attachment, first hook the hook to the other end of the attachment, then rotate the connector to make the limit slider close to the other end of the attachment, and then the tensioning cylinder works to extend. Since the weight of the small cavity end of the tensioning cylinder is small, the friction between it and the connector is small. Therefore, the small cavity end of the tensioning cylinder extends first, driving the limit slider to move to the attachment until the hook groove of the limit slider hooks one end of the attachment, and then the large cavity end of the tensioning cylinder extends again, driving the linkage shaft to move, and the linkage shaft on the front side drives the linkage rod to move, and the linkage rod drives the rear lock block to swing, so that the slot of the rear lock block swings downward and is stuck on the other end of the attachment, forming a double lock for the attachment, which realizes the requirement of rapid replacement while making the disassembly and assembly of the attachment safer and more reliable.

[0018] 2. In the double-lock hydraulic automatic connector of the present invention, when the two linkage shafts at the rear of the tensioning cylinder drive the rear locking block to rotate upward and reach a certain position, the gap between the two linkage shafts and the linkage rod gradually decreases, so that a self-locking limit can be formed between the two. At the same time, the rear locking block has the characteristics of a relatively forward rotation point, a long rotating shaft, and a heavy rear, so that it can actively rotate downward to lock during the locking process, reducing the jamming phenomenon during the locking process, and making the connector faster to connect accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation structure when the utility model is applied;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure in which one of the ear plates is removed;

[0022] Figure 4 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0023] Figure 5for Figure 4 A schematic diagram of the structure in which one of the ear plates is removed;

[0024] Figure 6 This is a structural diagram of the unlocking process of the utility model.

[0025] Among them: 1-connector, 2-tensioning cylinder, 3-limiting slider, 4-hook, 5-rear locking block, 6-hook groove, 7-linkage shaft, 8-linkage rod, 9-slot, 10-tensioning spring, 11-limiting platform, 12-ear plate, 13-connecting plate, 14-avoidance hole, 15-guide slide, 16-guide slide, 17-front baffle, 18-guide rod, 19-support plate, 20-limiting slide, a-connector, b-working arm, c-bucket. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0027] See Figure 1-6 The utility model is a double-lock hydraulic automatic connector, including a connector 1, a tensioning oil cylinder 2 is provided in the connector 1, a limit slider 3 is slidably connected to one end of the connector 1, and a hook 4 is provided at the other end. Rear locking blocks 5 are rotatably installed on both sides of the connector 1 above the hook 4, wherein one end of the small cavity of the tensioning oil cylinder 2 is connected to the limit slider 3, that is, one end of the piston rod of the tensioning oil cylinder 2 is connected to the limit slider 3, and a concave hook groove 6 is provided on one side of the lower part of the limit slider 3 for hooking the connecting shaft at the other end of the attachment (such as Figure 1 As shown), two spaced-apart linkage shafts 7 are provided on both sides of one end of the large cavity of the tensioning oil cylinder 2, that is, a linkage shaft 7 is provided at one end of the outer shell of the tensioning oil cylinder 2. The tensioning oil cylinder 2 is placed horizontally in the connecting body 1, and its two ends are respectively connected to the limit slider 3 and the linkage shaft 7 to form a support. A linkage rod 8 is provided on the top of each rear locking block 5, and the linkage rod 8 is movably inserted between the two linkage shafts 7 on the same side, so that the two linkage shafts 7 can drive the linkage rod 8 to move. When the two linkage shafts 7 at the rear of the tensioning oil cylinder 2 drive the rear locking block 5 to rotate upward and reach a certain position, the gap between the two linkage shafts 7 and the linkage rod 8 gradually decreases, so that a self-locking limit is formed between the two. At the same time, the rear locking block 5 has the characteristics of a relatively forward rotation point, a long rotating shaft, and a heavy rear, so that it can actively rotate downward to lock during the locking process, reducing the jamming phenomenon during the locking process, so that the connector can be connected to the accessory more quickly. The bottom of each rear locking block 5 is provided with an inwardly concave card slot 9, and the card slot 9 cooperates with the hook 4 to surround the connecting shaft at one end of the accessory to form a lock (as shown in FIG. Figure 1As shown in the figure, the linkage shaft 7 is slidably connected to the connector 1, which plays a guiding role on the large cavity end of the tensioning cylinder 2. A tensioning spring 10 is provided between the large cavity end of the tensioning cylinder 2 and the limit slider 5. When the tensioning spring 10 is locking the attachment, its state is in a stretched state. A limit platform 11 is provided in the middle of the connector 1 to limit the stroke of the limit slider 3, thereby ensuring that the large cavity end of the tensioning cylinder 2 can retract.

[0028] The double-lock hydraulic automatic connector of the present invention is provided with a tensioning oil cylinder 2 and a tensioning spring 10 in the connector 1. When the attachment is released, the tensioning oil cylinder 2 works and contracts. Since the tensioning spring 10 is in a stretched state at this time and the large cavity end of the tensioning oil cylinder 2 has a large weight, the friction between it and the connector 1 is large. Therefore, under the elastic force of the tensioning spring 10, the small cavity end of the tensioning oil cylinder 2 retracts first (such as Figure 6 As shown, the size of the limit slider 3 is retracted from the Y size to the X size), driving the limit slider 3 to slide and unlock one end of the attachment first. When the limit slider 3 moves to the position of the limit platform 11, the limit slider 3 cannot continue to slide, and the tensioning cylinder 2 continues to contract, and the large cavity end of the tensioning cylinder 2 begins to retract (as shown in FIG. Figure 6 When the lever 1 is unlocked, the rear end of the tool is unlocked, and the hook 4 is first hooked to the other end of the tool, and the connector is then rotated to make the limit slider 3 close to the other end of the tool. Then, the tensioning oil cylinder 2 is stretched, and the tensioning oil cylinder 2 is tightened. The small cavity end of the cylinder 2 has a small weight, and the friction between it and the connector 1 is small. Therefore, the small cavity end of the tensioning cylinder 2 extends first, driving the limit slider 3 to move onto the accessory until the hook groove 6 of the limit slider 3 hooks one end of the accessory. Then the large cavity end of the tensioning cylinder 2 extends again, driving the linkage shaft 7 to move. The linkage shaft 7 located on the front side drives the linkage rod 8 to move, and the linkage rod 8 drives the rear locking block 5 to swing, so that the slot 9 of the rear locking block 5 swings downward and is stuck in the other end of the accessory, forming a double lock for the accessory, realizing the requirement of rapid replacement while making the disassembly and assembly of the accessory safer and more reliable.

[0029] Preferably, the connector 1 is H-shaped, comprising two ear plates 12 and a connecting plate 13, wherein the two ear plates 12 are symmetrically arranged, and the connecting plate 13 is horizontally connected to the middle position of the two ear plates 12. The tensioning cylinder 2, the limit slider 3, the rear locking block 5, and the tensioning spring 10 are all located between the two ear plates 12 below the connecting plate 13, making the entire connector structure more compact. The hook 4 is integrally formed at the bottom of the two ear plates 12, which is convenient for manufacturing and can also improve the structural strength of the hook 4.

[0030] Preferably, an avoidance hole 14 is opened in the middle of the connecting plate 13. On the one hand, it can reduce the weight, and on the other hand, it can facilitate observation of structural components such as the tensioning cylinder 2 below the connecting plate 13, making disassembly and maintenance easier.

[0031] Preferably, a T-shaped guide slide 15 is provided at the top of the limit slider 3. A guide slot 16 is provided on the inner wall of each end of the two ear plates 12. The top and sides of the guide slide 15 are slidably connected to the guide slot 16. One end of the small cavity of the tensioning cylinder 2 and one end of the tensioning spring 10 are both connected to the lower portion of the guide slide 15, thereby guiding the sliding of the limit slider 3. The limit platform 11 is located at one end of the guide slot 16 near the middle of the ear plate 12, ensuring that the limit platform 11 can limit the travel of the limit slider 3. Furthermore, the guide slot 16 extends to the end of the ear plate 12, and a front baffle 17 is detachably installed between the ends of the two ear plates 12 to block the guide slot 16, thereby limiting the position of the limit slider 3 and preventing it from falling off. This facilitates the disassembly and assembly of the limit slider 3 during disassembly and maintenance.

[0032] Preferably, there are two tensioning springs 10, and a guide rod 18 is inserted in each tensioning spring 10. One end of the guide rod 18 is connected to one end of the large cavity of the tensioning cylinder 2, and the other end is slidably inserted in the guide slide 15 to guide the extension and contraction of the tensioning spring 10.

[0033] Preferably, a support plate 19 is provided between the two ear plates 12 below the connecting plate 13, wherein the tensioning cylinder 2 is located between the support plate 19 and the connecting plate 13, and one end of the large cavity of the tensioning cylinder 2 can be attached to the support plate 19 to play a supporting role.

[0034] Preferably, the inner walls of the other ends of the two ear plates 12 are each provided with a limiting groove 20, and one of the linkage shafts 7 on either side of the tensioning cylinder 2 is slidably mounted in the limiting groove 20, thereby guiding the large cavity end of the tensioning cylinder 2. It should be noted that the friction between the linkage shaft 7 and the limiting groove 20 is greater than the elastic force of the tensioning spring 10. This makes it easier to ensure that the large cavity end of the tensioning cylinder 2 can only be driven by hydraulic oil. Specifically, rubber sleeves can be added to both ends of the linkage shaft 7 to increase friction, which will not be detailed here.

[0035] Preferably, the two linkage shafts 7 corresponding to the same side of the tensioning cylinder 2 are staggered in an upper and lower arrangement. Such a structure enables the two linkage shafts 7 at the rear of the tensioning cylinder 2 to drive the rear locking block 5 to rotate upward to a certain position, and the gap between the two linkage shafts 7 and the linkage rod 8 gradually decreases, thereby forming a self-locking limit between the two.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A double-lock hydraulic automatic connector, comprising a connector (1), characterized in that: The connecting body (1) is provided with a tensioning oil cylinder (2), one end of the connecting body (1) is slidably connected to a limit slider (3), and the other end is provided with a hook (4), and rear locking blocks (5) are rotatably installed on both sides of the connecting body (1) above the hook (4), one end of the small cavity of the tensioning oil cylinder (2) is connected to the limit slider (3), and one side of the lower part of the limit slider (3) is provided with an inwardly concave hook groove (6), and two sides of the large cavity of the tensioning oil cylinder (2) are provided with two spaced linkage shafts (7 ), a linkage rod (8) is provided on the top of each rear locking block (5), and the linkage rod (8) is movably inserted between the two linkage shafts (7) on the same side, and a recessed card slot (9) is provided on the bottom of each rear locking block (5), and the linkage shaft (7) is slidably connected to the connector (1), and a tensioning spring (10) is provided between one end of the large cavity of the tensioning cylinder (2) and the limit slider (3), and a limit platform (11) for limiting the travel of the limit slider (3) is provided in the middle of the connector (1).

2. A double-lock hydraulic automatic connector according to claim 1, characterized in that: The connector (1) is H-shaped and includes two ear plates (12) and a connecting plate (13). The two ear plates (12) are symmetrically arranged. The connecting plate (13) is horizontally connected to the middle position of the two ear plates (12). The tensioning cylinder (2), the limit slider (3), the rear locking block (5), and the tensioning spring (10) are all located between the two ear plates (12) below the connecting plate (13). The hook (4) is integrally formed at the bottom of the two ear plates (12).

3. A double-lock hydraulic automatic connector according to claim 2, characterized in that: A avoidance hole (14) is provided in the middle of the connecting plate (13).

4. A double-lock hydraulic automatic connector according to claim 2, characterized in that: A T-shaped guide slide (15) is provided on the top of the limit slide (3), and a guide groove (16) is provided on the inner wall of one end of the two ear plates (12). The top two sides of the guide slide (15) are slidably connected to the guide groove (16), and one end of the small cavity of the tensioning cylinder (2) and one end of the tensioning spring (10) are connected to the lower part of the guide slide (15). The limit platform (11) is located at one end of the guide groove (16) close to the middle position of the ear plate (12).

5. A double-lock hydraulic automatic connector according to claim 4, characterized in that: The guide chute (16) passes through the end of the ear plate (12), and a front baffle (17) for blocking the guide chute (16) is detachably installed between the ends of the two ear plates (12).

6. The double-lock hydraulic automatic connector according to claim 4, characterized in that: There are two tensioning springs (10), each of which is inserted with a guide rod (18). One end of the guide rod (18) is connected to one end of the large cavity of the tensioning cylinder (2), and the other end is slidably inserted in the guide slide (15).

7. The double-lock hydraulic automatic connector according to claim 2, characterized in that: A supporting plate (19) is further provided between the two ear plates (12) below the connecting plate (13), and the tensioning oil cylinder (2) is located between the supporting plate (19) and the connecting plate (13).

8. The double-lock hydraulic automatic connector according to claim 2, characterized in that: The inner walls of the other ends of the two ear plates (12) are each provided with a limiting sliding groove (20), and one of the linkage shafts (7) on both sides of the tensioning oil cylinder (2) is slidably installed in the limiting sliding groove (20).

9. The double-lock hydraulic automatic connector according to claim 8, characterized in that: The two linkage shafts (7) corresponding to the same side of the tensioning oil cylinder (2) are both arranged in an up-down staggered manner.

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