Short manual and automatic integrated double-insurance structure connector

Abstract

The invention 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 of too large axle distance and too long total length of an existing connector and reducing negative effects caused by 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] The present invention relates to the technical field of engineering machinery, and particularly to a short manual-automatic integrated double-insurance structure connector. Background Art

[0002] In the structure of an excavator, a connector is a connecting device for connecting the vehicle body and the bucket. At present, the wheelbase of conventional welded / cast connectors is too large, and the total length is too long. After installing the bucket, the height will affect the digging force, and the length will cause collisions when digging the corner of a wall. For specific dimensions, please refer to the attached Figures 1 to 4 External dimensions of several connectors, Figure 1 For the P-series connector, the shaft diameter is 45 mm, the wheelbase is 230 mm, the shaft spacing is 215 mm, and the total length is 581 mm; Figure 2 For the cast connector, the shaft diameter is 45 mm, the wheelbase is 230 mm, the shaft spacing is 219 mm, and the total length is 613 mm; Figure 3 For the H-type connector, the shaft diameter is 44.5 mm, the wheelbase is 340 mm, the shaft spacing is 223 mm, and the total length is 694 mm; The lengths of these conventional connectors are relatively long. Figure 1 The length of the connector is affected by the hook and the nose-shaped protrusion at the left end of the movable hook; Figure 2 The connector is affected by the presence of the hook and the long distance between the rear end of the oil cylinder and the rear end of the housing; Figure 3 The connector is also affected by the presence of the hook and the long distance between the rear end of the oil cylinder and the rear end of the housing. In addition, in the existing push-type front and rear insurance connectors, since the cylinder is horizontally placed, both the front and rear insurance occupy the lateral space, resulting in a large length. In current connectors, there is a lack of short design. Due to structural reasons, these types of connectors cannot achieve a shorter design.

[0003] These existing connectors also have the problems of too large wheelbase and too long total length. They not only affect the use effect (digging force), but also cause contact when digging the front corners, leaving residual soil.

[0004] Therefore, in view of the deficiencies of the above solutions in actual production and implementation, they are corrected and improved. At the same time, with the spirit of seeking excellence and the concept, with the assistance of professional knowledge and experience, and after various ingenious ideas and tests, a short manual-automatic integrated double-insurance structure connector is provided to solve the problems of too large wheelbase and too long total length of the current connectors, and reduce the negative impacts caused by the too long length. Summary of the Invention

[0005] The object of the present invention is to provide a short manual-automatic integrated double-insurance structure connector, which is used to solve the problems of too large axle distance and too long total length of the existing connectors, and reduce the negative impacts caused by the too long length.

[0006] The technical solution of the present invention is realized as follows:

[0007] The short manual-automatic integrated double-insurance structure connector includes a housing, a cylinder and a movable hook. A tiger's mouth is provided at the bottom side of the rear end of the housing. The front end of the housing is a planar front side wall arranged vertically. Hanging grooves and hooks are respectively designed on the left and right sides at the top of the front end. The upper end of the movable part is rotationally connected to the housing by a first shaft. The tail of the cylinder barrel is rotationally connected to the housing, and the front end of the cylinder piston rod is rotationally connected to the middle part of the movable hook;

[0008] A front insurance limit protrusion is provided on the movable hook, and two pairs of safety shaft holes are provided on the housing. An insurance shaft for limiting the movable hook is arranged between the corresponding safety shaft holes;

[0009] It includes a transmission mechanism and a rear insurance block. When the movable hook rotates, it triggers the transmission mechanism. The transmission mechanism is used to drive the rear insurance block. The rear insurance block is rotationally connected to the housing by a third shaft. The rear insurance block is arranged at the top outside the tiger's mouth for limiting the shaft at the tiger's mouth.

[0010] As a preferred embodiment, the transmission mechanism includes a spring steel bar, a rear insurance trigger device and a rear insurance connecting rod. One end of the steel bar spring is arranged on the rear insurance trigger device, and the other end of the steel bar spring is close to the rear arc surface of the movable hook. When the movable hook rotates, it drives the spring steel bar;

[0011] The rear insurance trigger device is rotationally connected by a second shaft, the end of the rear insurance trigger device is rotationally connected to the rear insurance connecting rod, the other end of the rear insurance connecting rod is rotationally connected to the rear insurance rod, and a rear insurance torsion spring is arranged on the third shaft.

[0012] As a preferred embodiment, a rear insurance limit protrusion is provided on the rear insurance block, and a limit stop matched with the rear insurance limit protrusion is arranged inside the housing.

[0013] The beneficial effects of the present invention are:

[0014] The front side wall of this connector is a vertically cut plane, without redundant structures occupying length, and the hook is also integrated into the top, without occupying space. Compared with the prior art, the overall length of the connector is shortened, and the application range is wider.

[0015] The structural design of this solution determines that there is no structure that must increase the wheelbase. Therefore, the wheelbase is smaller than that of the prior art, and the rear end of the oil cylinder is close to the rear end of the housing, and there is no necessary structure between the two. Therefore, the overall length of the connector is further shortened.

[0016] The optimized elastic trigger rear safety device occupies a small space, is easy to trigger, realizes lean size control, the safety structure is both sensitive and durable, the elastic steel bar is cheap, easy to replace after fatigue damage, and has low maintenance cost.

[0017] After the overall length and the wheelbase are reduced, the stress intensity of this connector is not affected, and the quality can still be guaranteed.

[0018] In summary, this connector mainly solves the problems of the current connector having too large a wheelbase and too long a total length, and reduces the negative impacts of reduced digging force and easy soil adhesion caused by the excessive length. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Schematic of the prior art Figure 1 ;

[0021] Figure 2 Schematic of the prior art Figure 2 ;

[0022] Figure 3 Schematic of the prior art Figure 3 ;

[0023] Figure 4 Structural schematic diagram of the embodiment of the present invention;

[0024] Figure 5 Top view of the embodiment of the present invention;

[0025] Figure 6 For Figure 5 Cross-sectional schematic diagram along A-A;

[0026] Figure 7 Structural schematic diagram of the housing of the embodiment of the present invention;

[0027] Figure 8 Partial structural schematic diagram of the embodiment of the present invention.

[0028] In the figure, 1 - hanging groove; 2 - hook; 3 - safety shaft; 4 - housing; 5 - front side wall; 6 - movable hook; 7 - tiger's mouth; 8 - safety shaft hole; 9 - first shaft; 10 - front insurance limit projection; 11 - limit block; 12 - rear insurance limit projection; 13 - piston rod; 14 - cylinder barrel; 15 - spring steel bar; 16 - second shaft; 17 - rear insurance trigger device; 18 - rear insurance connecting rod; 20 - rear insurance torsion spring; 21 - third shaft; 22 - rear insurance block. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] It should be noted that all the directional indications (such as up, down, left, right, front, rear...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0032] In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "set", "connected", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or connected through an intermediate medium, or the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Figures 1 - 3 are schematic diagrams of three types of connectors in the prior art, which are used in conjunction with the background art part to clearly show the structure of the prior art for comparison with this solution.

[0034] Among them Figure 3 shows the H - type connector. The opening at the end of the oil cylinder is adjusted along the oil cylinder travel line. It is not suitable to move too far backward, which will affect the structural strength at the rear end. When the distance is relatively close, the opening is extremely easy to crack. Therefore, the structure requires a relatively long distance from the rear end.

[0035] See Figures 4 - 8, a short manual-automatic integrated double-insurance structure connector, comprising a housing 4, a cylinder and a movable hook 6. A tiger mouth 7 is provided at the bottom side of the rear end of the housing 4. The front end of the housing 4 is a planar front side wall 5 arranged vertically. A hanging groove 1 and a hanging hook 2 are respectively designed on the left and right sides of the top of the front end. The upper end of the movable part is rotationally connected to the housing 4 by a first shaft 9. The tail of the cylinder barrel 14 of the cylinder is rotationally connected to the housing 4. The front end of the cylinder piston rod 13 is rotationally connected to the middle of the movable hook 6;

[0036] A front insurance limit protrusion 10 is provided on the movable hook 6. Two pairs of safety shaft holes 8 are provided on the housing 4. An insurance shaft for limiting the movable hook 6 is arranged between the corresponding safety shaft holes 8;

[0037] It includes a transmission mechanism and a rear insurance block 22. When the movable hook 6 rotates, it triggers the transmission mechanism. The transmission mechanism is used to drive the rear insurance block 22. The rear insurance block 22 is rotationally connected to the housing 4 by a third shaft 21. The rear insurance block 22 is arranged at the top outside the tiger mouth 7 for limiting the shaft at the tiger mouth 7.

[0038] The transmission mechanism includes a spring steel bar 15, a rear insurance trigger device 17 and a rear insurance connecting rod 18. One end of the steel bar spring is arranged on the rear insurance trigger device 17. The other end of the steel bar spring is close to the rear arc surface of the movable hook 6. When the movable hook 6 rotates, it drives the spring steel bar 15;

[0039] The rear insurance trigger device 17 is rotationally connected to the housing 4 by a second shaft 16. The end of the rear insurance trigger device 17 is rotationally connected to the rear insurance connecting rod 18. The other end of the rear insurance connecting rod 18 is rotationally connected to the rear insurance rod. A rear insurance torsion spring 20 is arranged on the third shaft 21.

[0040] A rear insurance limit protrusion 12 is provided on the rear insurance block 22. A limit stop 11 matched with the rear insurance limit protrusion 12 is arranged inside the housing 4.

[0041] Manual-automatic integrated structure: Refer to Figure 6 , taking this state as the initial state, when the cylinder extends, the piston rod 13 drives the movable hook 6 to rotate. The front insurance limit protrusion 10 rotates clockwise around the first shaft 9. After passing through the safety shaft hole 8 on the right side, manually insert the safety shaft 3 into this hole, and a manual insurance device can be formed by using its limit.

[0042] Refer to Figure 4 , 6 , 8, the rear insurance block 22, the rear insurance torsion spring 20, the rear insurance limit block, the rear insurance connecting rod 18, the rear insurance trigger device 17, and the spring steel bar 15 form a rear insurance automatic trigger insurance device. In the working state, the rear insurance and the housing form a closed mouth to prevent the rear shaft from falling.

[0043] At Figure 6In the state where the front axle can be detached from the movable hook 6, the rear insurance is not triggered and retracted. This state is the key point for the rear insurance to work. (The actual wheelbase at this time is 230mm and the total length is 473mm)

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

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

[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 is retracted, which will bend the spring steel bar 15. The connecting rod and sales 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 components.

[0047] The beneficial effects of the present invention are:

[0048] The front side wall of this connector is a vertically cut plane, without any redundant structure that takes up length, and the hook is also integrated into the top, which does not take up space. Compared with the existing technology, the overall length of the connector is shortened and the application range is wider.

[0049] The structural design of this solution determines that there is no need to increase the wheelbase structure, so the wheelbase is smaller than that of the existing technology, and the rear end of the cylinder is close to the rear end of the shell, and there is no necessary structure between the two, thereby further shortening the overall length of the connector.

[0050] The optimized elastic trigger rear safety device takes up little space and is easy to trigger, achieving lean size control. The safety structure is both sensitive and durable. The elastic steel bar is inexpensive and easy to replace after fatigue damage, with low maintenance costs.

[0051] After the overall length and wheelbase are reduced, the stress-bearing strength of the connector is not affected and the quality can still be guaranteed.

[0052] In summary, this connector mainly solves the problem of the current connector having too large a wheelbase and too long a total length, and reduces the negative effects of reduced digging force and easy soil adhesion caused by the excessive length.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement; when the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. Short manual-automatic integrated double-insurance structure connector, including a housing, a cylinder and a movable hook. A tiger's mouth is provided at the bottom side of the rear end of the housing. It is characterized in that, The front end of the housing is a planar front side wall arranged in the vertical direction. On the left and right sides of the top of the front end, a hanging groove and a hook are respectively designed. The upper end of the movable hook is rotationally connected to the housing by a first shaft. The tail of the cylinder barrel of the air cylinder is rotationally connected to the housing, and the front end of the piston rod of the air cylinder is rotationally connected to the middle of the movable hook; A front safety limit protrusion is arranged on the movable hook, and two pairs of safety shaft holes are arranged on the housing. A safety shaft for limiting the movable hook is arranged 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. The transmission mechanism is used to drive the rear safety block. The rear safety block is rotationally connected to the housing by a third shaft. The rear safety block is arranged at the top outside the tiger's mouth to limit the shaft at the tiger's mouth.

2. The short manual-automatic integrated double-insurance structure connector according to claim 1, characterized in that, The transmission mechanism includes a spring steel bar, a rear safety trigger device and a rear safety connecting rod. One end of the steel bar spring is arranged on the rear safety trigger device, and the other end of the steel bar spring is close to the rear arc surface of the movable hook. When the movable hook rotates, it drives the spring steel bar; The rear safety trigger device is rotationally connected by a second shaft and can rotate. The end of the rear safety trigger device is rotationally connected to the rear safety connecting rod. The other end of the rear safety connecting rod is rotationally connected to the rear safety rod. A rear safety torsion spring is arranged on the third shaft.

3. The short manual-automatic integrated double-insurance structure connector according to claim 2, characterized in that A rear safety limit protrusion is arranged on the rear safety block, and a limit stop matching with the rear safety limit protrusion is arranged inside the housing.

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