Short manual and automatic integrated double-insurance structure connector

Abstract

The utility model discloses a short manual and automatic integrated double-insurance structure connector, relates to the technical field of engineering equipment, and is used for solving the problems that an existing connector is too large in axle distance and too long in total length and reducing negative effects caused by the too long length. The front end of the shell is a planar front end side wall arranged in the vertical direction, a hanging groove and a hanging hook are designed on the left side and the right side of the top of the front end respectively, the movable upper end is rotationally connected with the shell through a first shaft, the tail of a cylinder barrel of the air cylinder is rotationally connected with the shell, and the front end of a piston rod of the air cylinder is rotationally connected with the middle of the movable hook. Therefore, according to the connector, the overall length of the connector is shortened, compared with the prior art, the axle distance is smaller, the occupied space is small, the stress strength is not affected, the problems that an existing connector is too large in axle distance and too long in total length are solved, and the negative effects that digging force is reduced and soil is prone to adhering due to the fact that the length is too long are reduced.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a short-length manual / automatic integrated double-safety connector. Background Technology

[0002] In the structure of an excavator, the connector is a connecting device that links the vehicle body and the bucket. Currently, conventional welded / cast connectors have excessively large wheelbases and overall lengths. After the bucket is installed, the height affects the digging force, and the length can cause collisions when digging into corners. See the appendix for details. Figures 1-4 Several connector dimensions, Figure 1 This is a P-series connector with a shaft diameter of 45mm, a shaft pitch of 230mm, a shaft spacing of 215mm, and a total length of 581mm. Figure 2 This is a cast connector with a shaft diameter of 45mm, a shaft pitch of 230mm, a shaft spacing of 219mm, and a total length of 613mm. Figure 3 It is an H-type connector with a shaft diameter of 44.5mm, a shaft pitch of 340mm, a shaft spacing of 223mm, and a total length of 694mm; these conventional connectors are relatively long. Figure 1 The connector's length is affected by the nose-shaped protrusion on the left end of the hook and movable hook; Figure 2 The connector is due to the presence of the hook and the relatively long distance between the rear end of the cylinder and the rear end of the housing. Figure 3 The connector is also long because of the presence of the hook and the long distance between the rear end of the cylinder and the rear end of the housing. In addition, the existing flat-push type front and rear safety connectors are long because the cylinder is horizontally placed and the front and rear safety occupy lateral space. There is a lack of short designs in the current connectors. Due to structural reasons, the above types of connectors cannot achieve a shorter design.

[0003] These existing connectors also suffer from the aforementioned problems of excessively large wheelbase and excessively long total length. This not only affects the performance (digging force), but the excessively long front end also causes the corners of the excavator to touch the ground, resulting in residual soil.

[0004] Therefore, in view of the shortcomings of the above solution in actual production and implementation, it has been modified and improved. At the same time, in the spirit and concept of seeking the best, with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, a short manual and automatic integrated double-safety structure connector is specially provided to solve the problem of the current connector having too large a pitch and too long a total length, and to reduce the negative impact caused by the excessive length. Utility Model Content

[0005] The purpose of this utility model is to provide a short manual / automatic integrated double-safety connector to solve the problem of excessively large shaft pitch and total length of current connectors, and to reduce the negative impact caused by excessive length.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A short-length manual / automatic integrated double-safety connector includes a housing, a cylinder, and a movable hook. The rear bottom side of the housing is provided with a tiger's mouth, and the front end of the housing is a flat front sidewall arranged in a vertical direction. The left and right sides of the top of the front end are respectively designed with a lifting groove and a lifting hook. The movable upper end is rotatably connected to the housing via a first shaft. The tail of the cylinder is rotatably connected to the housing, and the front end of the cylinder piston rod is rotatably connected to the middle of the movable hook.

[0008] The movable hook is provided with a front safety limiting protrusion, and the outer shell is provided with two pairs of safety shaft holes, with a safety shaft for limiting the movable hook between the corresponding safety shaft holes;

[0009] It includes a transmission mechanism and a rear safety block. When the movable hook rotates, it triggers the transmission mechanism, which is used to drive the rear safety block. The rear safety block is rotatably connected to the outer shell via a third shaft. The rear safety block is located on the top of the outer side of the tiger's mouth to limit the shaft at the tiger's mouth.

[0010] In a preferred embodiment, the transmission mechanism includes a spring steel bar, a rear safety triggering device, and a rear safety connecting rod. One end of the spring steel bar is mounted on the rear safety triggering device, and the other end of the spring steel bar is close to the rear arc surface of the movable hook. When the movable hook rotates, it transmits power to the spring steel bar.

[0011] The rear safety triggering device is rotatably connected via a second shaft. One end of the rear safety triggering device is rotatably connected to the rear safety linkage, and the other end of the rear safety linkage is rotatably connected to the rear safety bar. A rear safety torsion spring is provided on the third shaft.

[0012] In a preferred embodiment, the rear safety block is provided with a rear safety limiting protrusion, and the housing is provided with a limiting stop that cooperates with the rear safety limiting protrusion.

[0013] The beneficial effects of this utility model are:

[0014] The front sidewall of this connector is a vertically cut plane, without any unnecessary structures that take up length. The hook is also integrated into the top, saving space. Compared with existing technologies, it shortens the overall length of the connector and has a wider range of applications.

[0015] The structural design of this solution eliminates the need for a structure that increases the wheelbase, resulting in a smaller wheelbase compared to existing technologies. Furthermore, the rear end of the hydraulic cylinder is close to the rear end of the housing, eliminating the need for a structure between them, thus further shortening the overall length of the connector.

[0016] The optimized elastic trigger safety device occupies little space, is easy to trigger, achieves lean size control, and the safety structure is both sensitive and durable. The elastic steel bar is inexpensive, easy to replace after fatigue damage, and has low maintenance costs.

[0017] Despite the reduction in overall length and wheelbase, the strength of this connector remains unaffected, and its quality is still guaranteed.

[0018] In summary, this connector mainly solves the problems of excessively large wheelbase and excessive total length of current connectors, reducing the negative impacts of reduced digging force and easy soil adhesion caused by excessive length. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 Illustration of existing technology Figure 1 ;

[0021] Figure 2 Illustration of existing technology Figure 2 ;

[0022] Figure 3 Illustration of existing technology Figure 3 ;

[0023] Figure 4 This is a structural schematic diagram of an embodiment of the present utility model;

[0024] Figure 5 This is a top view of an embodiment of the present utility model;

[0025] Figure 6 for Figure 5 A schematic diagram of the cross-section along AA;

[0026] Figure 7 This is a schematic diagram of the outer shell of an embodiment of the present utility model;

[0027] Figure 8 This is a partial structural diagram of an embodiment of the present utility model.

[0028] In the diagram, 1-lifting groove; 2-lifting hook; 3-safety shaft; 4-outer shell; 5-front side wall; 6-movable hook; 7-tiger mouth; 8-safety shaft hole; 9-first shaft; 10-front safety limit protrusion; 11-limit stop; 12-rear safety limit protrusion; 13-piston rod; 14-cylinder; 15-spring steel bar; 16-second shaft; 17-rear safety trigger device; 18-rear safety connecting rod; 20-rear safety torsion spring; 21-third shaft; 22-rear safety block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0032] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Figures 1-3 These are schematic diagrams of three types of connectors in the prior art. The background section clearly shows the structure of the prior art for comparison with this solution.

[0034] in Figure 3 The connector shown is an H-type connector. The opening at the end of the cylinder is adjusted along the cylinder's travel line and should not be moved too far back, as this would affect the structural strength of the rear end. When the distance is too close, the opening is very easy to crack. Therefore, the structure requires a long distance between it and the rear end.

[0035] See Figures 4-8The short manual / automatic integrated double-safety connector includes a housing 4, a cylinder and a movable hook 6. The rear bottom side of the housing 4 is provided with a tiger's mouth 7. The front end of the housing 4 is a flat front side wall 5 arranged in the vertical direction. The left and right sides of the top of the front end are respectively designed with a hanging groove 1 and a hanging hook 2. The movable upper end is rotatably connected to the housing 4 by the first shaft 9. The tail of the cylinder barrel 14 is rotatably connected to the housing 4. The front end of the cylinder piston rod 13 is rotatably connected to the middle of the movable hook 6.

[0036] The movable hook 6 is provided with a front safety limit protrusion 10, and the outer shell 4 is provided with two pairs of safety shaft holes 8. A safety shaft for limiting the movable hook 6 is provided between the corresponding safety shaft holes 8.

[0037] It includes a transmission mechanism and a rear safety block 22. When the movable hook 6 rotates, it triggers the transmission mechanism, which is used to drive the rear safety block 22. The rear safety block 22 is rotatably connected to the outer shell 4 via a third shaft 21. The rear safety block 22 is located on the top of the outer side of the tiger's mouth 7 to limit the shaft at the tiger's mouth 7.

[0038] The transmission mechanism includes a spring steel bar 15, a rear safety trigger device 17 and a rear safety link 18. One end of the spring steel bar is set on the rear safety trigger device 17, and the other end of the spring steel bar is close to the rear arc surface of the movable hook 6. When the movable hook 6 rotates, it transmits power to the spring steel bar 15.

[0039] The rear safety triggering device 17 is rotatably connected via the second shaft 16. The end of the rear safety triggering device 17 is rotatably connected to the rear safety linkage 18, and the other end of the rear safety linkage 18 is rotatably connected to the rear bumper. A rear safety torsion spring 20 is provided on the third shaft 21.

[0040] The rear safety block 22 is provided with a rear safety limit protrusion 12, and the housing 4 is provided with a limit stop 11 that cooperates with the rear safety limit protrusion 12.

[0041] Manual / automatic integrated structure: See Figure 6 With this as the initial state, the cylinder extends, the piston rod 13 rotates with the multi-moving hook 6, and the front safety limit protrusion 10 rotates clockwise around the first shaft 9. After passing the safety shaft hole 8 on the right, the safety shaft 3 can be manually inserted into the hole, and its limit can be used to form a manual safety device.

[0042] See Figure 4 , 6 The rear safety block 22, rear safety torsion spring 20, rear safety limit block, rear safety connecting rod 18, rear safety triggering device 17, and spring steel bar 15 form an automatic triggering safety device for the rear safety. In the working state, the rear safety and the housing form a closed opening to prevent the rear axle from falling off.

[0043] exist Figure 6In this state, when the front axle can detach from the movable hook 6, the rear safety is not triggered and retracted. This state is the key point for the rear safety to function. (The actual measured wheelbase at this time is 230mm, and the total length is 473mm.)

[0044] After the movable hook 6 retracts, it drives the spring steel bar 15. The spring steel bar 15 and the rear safety are linked to the connecting rod through the trigger device. When the rear safety is retracted, the rear axle can be removed from the rear jaw 7. When the wheelbase is large, the movable hook 6 is forward, forming a 25mm closing distance with the housing. When the rear axle falls off, it effectively protects the front axle from falling off.

[0045] The front left side of the housing is made into an open hook 2, and the right side is made into a closed hanging slot 1 to meet different customer requirements and needs.

[0046] The spring steel bar 15 on the rear safety trigger device 17 is elastic. Its important function is that when the rear safety is blocked by foreign objects or the rear axle and cannot be retracted, the movable hook 6 will retract and bend the spring steel bar 15. The connecting rod and other parts associated with the rear safety only need to overcome the bending force of the spring steel bar 15, which plays a role in reducing the force and will not cause damage to the parts.

[0047] The beneficial effects of this utility model are:

[0048] The front sidewall of this connector is a vertically cut plane, without any unnecessary structures that take up length. The hook is also integrated into the top, saving space. Compared with existing technologies, it shortens the overall length of the connector and has a wider range of applications.

[0049] The structural design of this solution eliminates the need for a structure that increases the wheelbase, resulting in a smaller wheelbase compared to existing technologies. Furthermore, the rear end of the hydraulic cylinder is close to the rear end of the housing, eliminating the need for a structure between them, thus further shortening the overall length of the connector.

[0050] The optimized elastic trigger safety device occupies little space, is easy to trigger, achieves lean size control, and the safety structure is both sensitive and durable. The elastic steel bar is inexpensive, easy to replace after fatigue damage, and has low maintenance costs.

[0051] Despite the reduction in overall length and wheelbase, the strength of this connector remains unaffected, and its quality is still guaranteed.

[0052] In summary, this connector mainly solves the problems of excessively large wheelbase and excessive total length of current connectors, reducing the negative impacts of reduced digging force and easy soil adhesion caused by excessive length.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A short, manual / automatic integrated double-safety connector, comprising a housing, a cylinder, and a movable hook, wherein a gripper opening is provided on the bottom rear end of the housing, characterized in that... The front end of the outer shell is a planar front sidewall arranged in a vertical direction. The left and right sides of the top of the front end are respectively designed with a hanging groove and a hook. The movable upper end is rotatably connected to the outer shell by a first shaft. The tail of the cylinder is rotatably connected to the outer shell. The front end of the cylinder piston rod is rotatably connected to the middle of the movable hook. The movable hook is provided with a front safety limiting protrusion, and the outer shell is provided with two pairs of safety shaft holes, with a safety shaft for limiting the movable hook between the corresponding safety shaft holes; It includes a transmission mechanism and a rear safety block. When the movable hook rotates, it triggers the transmission mechanism, which is used to drive the rear safety block. The rear safety block is rotatably connected to the outer shell via a third shaft. The rear safety block is located on the top of the outer side of the tiger's mouth to limit the shaft at the tiger's mouth.

2. The short-length manual / automatic integrated double-safety connector according to claim 1, characterized in that, The transmission mechanism includes a spring steel bar, a rear safety triggering device and a rear safety connecting rod. One end of the spring steel bar is set on the rear safety triggering device, and the other end of the spring steel bar is close to the rear arc surface of the movable hook. When the movable hook rotates, it transmits power to the spring steel bar. The rear safety triggering device is rotatably connected via a second shaft. One end of the rear safety triggering device is rotatably connected to the rear safety linkage, and the other end of the rear safety linkage is rotatably connected to the rear safety bar. A rear safety torsion spring is provided on the third shaft.

3. The short-length manual / automatic integrated double-safety connector according to claim 2, characterized in that, The rear safety block is provided with a rear safety limiting protrusion, and the housing is provided with a limiting stop that cooperates with the rear safety limiting protrusion.

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