Novel automatic connector with double-lock structure

Abstract

The utility model discloses a novel automatic connector with a double-lock structure, belongs to the technical field of connectors, and solves the problems of low reliability and complex structure of an existing automatic connector with a double-lock structure. The device comprises a connecting body, a tensioning oil cylinder is arranged in the connecting body, a pressing shaft is arranged at one end of a large cavity of the tensioning oil cylinder, a pressing groove is formed in the top of each rear locking block, and the two ends of the pressing shaft extend to the two sides of the tensioning oil cylinder and are movably inserted into the pressing grooves of the rear locking blocks. The outer side of the bottom of each rear locking block is provided with a limiting rod extending downwards, fan-shaped grooves are formed in the two sides of the connecting body, the two ends of the pressing shaft extend to the two sides of the rear locking blocks and are inserted into the fan-shaped grooves in a sliding mode, the tensioning oil cylinder is sleeved with a tensioning spring, and a limiting table for limiting the stroke of the limiting sliding block is arranged in the middle of the connecting body. The novel automatic connector provided by the utility model meets the requirement of quick replacement of accessories, and meanwhile, the whole locking structure is simple and reliable.

Description

Technical Field

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

[0002] The primary function of connectors in the construction machinery field is to enable the rapid interchange of buckets and various rakes, claws, and other tools (collectively referred to as "accessories") through a two-way connection, thereby enabling rapid switching between various working conditions and achieving multi-purpose use of a single machine. These connectors are now quite common in the construction machinery field and come in a wide variety of types. Currently, dual-lock automatic connectors on the market primarily come in two forms: a relatively simple push-to-lock mechanism, and a more complex mechanism that utilizes a return spring and compression spring to achieve a flip-to-lock mechanism. The former is simpler but has relatively poor reliability, while the latter is more complex and requires a variety of parts.

[0003] Therefore, it is urgent to design a new automatic connector with a double-lock structure to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a new automatic connector with a double lock structure in view of the above-mentioned deficiencies in the prior art, which satisfies the requirement of rapid replacement of accessories while making the overall locking structure simple and reliable.

[0005] The locking mechanism that this locking mechanism is installed in the locking mechanism is that the locking mechanism is locked and the locking mechanism is locked.

[0006] 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.

[0007] Furthermore, an avoidance hole is provided in the middle of the connecting plate.

[0008] Furthermore, a guide slide is provided on the top of the limit slider, and a guide groove is opened on the inner wall of one end of the two ear plates. The guide slide is slidably connected to the guide groove, and the limit platform is located at one end of the guide groove close to the middle position of the ear plate.

[0009] 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.

[0010] Furthermore, a limit plate is provided at one end of the large chamber of the tensioning oil cylinder, and both ends of the tensioning spring are respectively connected to the limit slider and the limit plate.

[0011] 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.

[0012] Beneficial effects

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The double-lock hydraulic automatic connector of the present invention is configured with a tensioning oil cylinder and a tensioning spring in the connector. 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 connector 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, and the rear locking block begins to swing inward under the guidance of the fan-shaped groove, so that the limit rod is 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, and the rear locking block begins to swing outward under the guidance of the fan-shaped groove, so that the limit rod is pressed on the other end of the attachment, forming a double lock on the attachment, realizing the requirement of rapid replacement while making the disassembly and assembly of the attachment safer and more reliable.

[0015] 2. The double-lock hydraulic automatic connector of the utility model uses the pressure shaft on the tensioning oil cylinder to rotate in the fan-shaped groove of the connector to drive and limit the locking. The tensioning oil cylinder is cleverly pulled back and forth and the oil cylinder rotates along the fan-shaped groove of the connector, thereby driving the rear locking block to rotate about the fixed point on the connector to achieve the unlocking and unlocking state. At the same time, the fan-shaped groove of the connector also plays the role of supporting the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation structure when the utility model is applied;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0018] Figure 3 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure in which one of the ear plates is removed;

[0020] Figure 5 This is a structural diagram of the unlocking process of the utility model.

[0021] Among them: 1-connector, 2-tensioning cylinder, 3-limiting slider, 4-hook, 5-rear locking block, 6-hook groove, 7-pressure shaft, 8-pressure groove, 9-limiting rod, 10-fan-shaped groove, 11-tensioning spring, 12-limiting platform, 13-ear plate, 14-connecting plate, 15-avoidance hole, 16-guide slide, 17-guide slide, 18-front baffle, 19-limiting plate, 20-support plate, a-connector, b-working arm, c-bucket. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0023] See Figure 1-5 The utility model is a new automatic connector with a double-lock structure, including a connector 1, a tensioning cylinder 2 is provided in the connector 1, a limited 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 cylinder 2 is connected to the limited slider 3, that is, one end of the piston rod of the tensioning cylinder 2 is connected to the limited slider 3, and a concave hook groove 6 is provided on one side of the lower part of the limited slider 3 for hooking the connecting shaft at the other end of the attachment (such as Figure 1When the cam 1 is in the state of tension, the cam 1 is in the state of tension, and the cam 1 is in the state of tension.

[0024] The double-lock hydraulic automatic connector of the present invention is configured with a tensioning cylinder 2 and a tensioning spring 11 in the connecting body 1. When the attachment is released, the tensioning cylinder 2 works and contracts. Since the tensioning spring 11 is in a stretched state at this time and the large cavity end of the tensioning cylinder 2 is heavy, the friction between it and the connecting body 1 is large. Therefore, under the elastic force of the tensioning spring 11, the small cavity end of the tensioning cylinder 2 retracts first, 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 12, the limit slider 3 cannot continue to slide, and the tensioning cylinder 2 continues to retract. The large cavity end of the tensioning cylinder 2 begins to retract, and the rear locking block 5 begins to swing inward under the guidance of the fan-shaped groove 10, so that the limit rod 9 is away from the other end of the attachment, so that the limit slider 3 is unlocked first, and then unlocked. The locking block 5 avoids the direct disengagement of the accessory caused by the simultaneous opening of the double locks, which may cause damage and certain safety accidents. When installing the accessory, first hook the hook 4 to the other end of the accessory, and then rotate the connector to make the limit slider 3 close to the other end of the accessory, and then the tensioning cylinder 2 works to extend. Since the weight of the small cavity end of the tensioning cylinder 2 is small, 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 to the accessory until the hook groove 6 of the limit slider 3 hooks one end of the accessory, and then the large cavity end of the tensioning cylinder 2 extends again, and the rear locking block 5 begins to swing outward under the guidance of the fan-shaped groove 10, so that the limit rod 9 is pressed on the other end of the accessory, forming a double lock on the accessory, realizing the requirement of rapid replacement while making the disassembly and assembly of the accessory safer and more reliable.

[0025] At the same time, the double-lock hydraulic automatic connector of the present invention has a rear locking block 5 that is driven and locked by the rotation of the pressure shaft 7 on the tensioning cylinder 2 in the fan-shaped groove 10 of the connector 1. The front and rear pulling of the tensioning cylinder 2 is cleverly converted into the cylinder rotating with the fan-shaped groove 10 of the connector, thereby driving the rear locking block 5 to rotate with the fixed point on the connector 1 to achieve the unlocking and unlocking state. At the same time, the fan-shaped groove of the connector also plays the role of supporting the cylinder.

[0026] Preferably, the connector 1 is H-shaped, comprising two ear plates 13 and a connecting plate 14, wherein the two ear plates 13 are symmetrically arranged, and the connecting plate 14 is horizontally connected to the middle position of the two ear plates 13. The tensioning cylinder 2, the limit slider 3, the rear locking block 5, and the tensioning spring 11 are all located between the two ear plates 13 below the connecting plate 14, making the entire connector structure more compact. The hook 4 is integrally formed at the bottom of the two ear plates 13, which is convenient for manufacturing and can also improve the structural strength of the hook 4.

[0027] Preferably, a avoidance hole 15 is provided in the middle of the connecting plate 1. On the one hand, the weight can be reduced, and on the other hand, the structural components such as the tensioning cylinder 2 below the connecting plate 14 can be easily observed, making disassembly and maintenance convenient.

[0028] Preferably, a guide slide 16 is provided at the top of the limit slider 3, and a guide slot 17 is provided on the inner wall of one end of each of the two ear plates 13. The guide slide 16 is slidably connected to the guide slot 17 to guide the sliding of the limit slider 3. The limit platform 12 is located at one end of the guide slot 17 near the middle of the ear plate 13, ensuring that the limit platform 11 can limit the travel of the limit slider 3. Furthermore, the guide slot 17 extends to the end of the ear plate 13, and a front baffle 18 is detachably installed between the ends of the two ear plates 13 to block the guide slot 17, 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.

[0029] Preferably, a limit plate 19 is provided at one end of the large cavity of the tensioning cylinder 2 , and both ends of the tensioning spring 11 are respectively connected to the limit slider 3 and the limit plate 19 , so as to facilitate the limiting and installation of the tensioning spring 11 .

[0030] Preferably, a support plate 20 is further provided between the two ear plates 13 below the connecting plate 14, wherein the tensioning cylinder 2 is located between the support plate 20 and the connecting plate 14, and the large cavity end of the tensioning cylinder 2 can be attached to the support plate 20 to provide support. It should be noted that the friction between the pressure shaft 7 and the fan-shaped groove 10 is greater than the elastic force of the tensioning spring 11. This makes it easier to ensure that the large cavity end of the tensioning cylinder 2 requires hydraulic oil to drive movement. Specifically, rubber sleeves can be added to both ends of the pressure shaft 7 to increase friction, which will not be described in detail here.

[0031] 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 new automatic connector with a double-lock structure, comprising a connector (1), characterized in that: The connector (1) is provided with a tensioning oil cylinder (2), one end of the connector (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 connector (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 a concave hook groove (6) is provided on one side of the lower part of the limit slider (3), and a pressure shaft (7) is provided at one end of the large cavity of the tensioning oil cylinder (2), and a pressure groove (8) is provided on the top of each rear locking block (5). The two ends of the pressure shaft (7) extend to both sides of the tensioning cylinder (2) and are movably inserted into the pressure groove (8) of the rear locking block (5). The outer side of the bottom of each rear locking block (5) is provided with a downwardly extending limit rod (9). The two sides of the connecting body (1) are provided with fan-shaped grooves (10). The two ends of the pressure shaft (7) extend to both sides of the rear locking block (5) and are slidably inserted into the fan-shaped grooves (10). The tensioning cylinder (2) is provided with a tensioning spring (11). The middle of the connecting body (1) is provided with a limit platform (12) for limiting the travel of the limit slider (3).

2. A new automatic connector with a double lock structure according to claim 1, characterized in that: The connector (1) is H-shaped and includes two ear plates (13) and a connecting plate (14). The two ear plates (13) are symmetrically arranged. The connecting plate (14) is horizontally connected to the middle position of the two ear plates (13). The tensioning cylinder (2), the limit slider (3), the rear locking block (5), and the tensioning spring (11) are all located between the two ear plates (13) below the connecting plate (14). The hook (4) is integrally formed at the bottom of the two ear plates (13).

3. The new automatic connector with double lock structure according to claim 2 is characterized in that: A avoidance hole (15) is provided in the middle of the connecting plate (14).

4. The new automatic connector with double lock structure according to claim 2 is characterized in that: A guide slide (16) is provided on the top of the limit slide block (3), and a guide slot (17) is provided on the inner wall of one end of the two ear plates (13). The guide slide (16) is slidably connected to the guide slot (17), and the limit platform (12) is located at one end of the guide slot (17) close to the middle position of the ear plate (13).

5. The new automatic connector with double lock structure according to claim 4 is characterized in that: The guide chute (17) penetrates to the end of the ear plate (13), and a front baffle (18) for blocking the guide chute (17) is detachably installed between the ends of the two ear plates (13).

6. The new automatic connector with double lock structure according to claim 4 is characterized in that: A limit plate (19) is provided at one end of the large cavity of the tensioning oil cylinder (2), and both ends of the tensioning spring (11) are respectively connected to the limit slider (3) and the limit plate (19).

7. The new automatic connector with double lock structure according to claim 2 is characterized in that: A supporting plate (20) is further provided between the two ear plates (13) below the connecting plate (14), and the tensioning oil cylinder (2) is located between the supporting plate (20) and the connecting plate (14).

Images