Double-insurance symmetrical hydraulic connector for excavator
By designing a dual-fuse symmetric hydraulic connector in the excavator connector, a combination of a flat-push cylinder and a rotating fuse, a double-fuse mechanism is achieved to improve safety, and the safety and cost issues of existing connectors are solved by reducing costs by using conventional drive cylinders.
Patent Information
- Application Number
- CN202420630185.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing excavator connectors are poor in safety and cannot set up a reliable safety structure, which leads to a high risk of falling off the rear axle. At the same time, the design uses expensive square oil cylinders, resulting in excessive production costs.
A double-insurance symmetric hydraulic connector is designed, adopting a structure that combines a flat push cylinder and a rotating fuse. Through the linkage of the tension spring, the fuse block and the fuse trigger rod, a double-insurance mechanism is formed to prevent the movable hook from moving back and the rear axle falling off, and a conventional drive cylinder is used to reduce costs.
It effectively improves the safety of the connector, prevents the bucket from falling off, solves the problem of poor safety of existing connectors, and reduces production costs and avoids the use of expensive square oil cylinders.
Smart Images
Figure CN222575593U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connectors, in particular to a double-safety symmetrical hydraulic connector for an excavator. Background Art
[0002] The connector, namely the excavator quick connector, also called quick-change connector or quick connector, is a part suitable for excavators. The quick connector can quickly install and switch various configurations (bucket, ripper, breaker, hydraulic shear, etc.) on the excavator, which can expand the use range of the excavator, save time and improve work efficiency.
[0003] There are many types of connectors, each used in different usage scenarios. Among them, the S30 series is the most widely used in the S series, but its connector wheelbase is small, and most of them adopt a mechanical manual structure. It is necessary to leave the excavator when switching, which is inconvenient to operate. In addition, due to the small wheelbase of the S30 series hydraulic connector, it is impossible to set a reliable locking safety structure. The extended rear jaws alone cannot effectively prevent the rear axle from falling off, so the safety performance is poor. This is a big problem with existing connectors.
[0004] Secondly, the existing S30 series connectors are designed with a special square cylinder, which is expensive and has no other meaning except to effectively shorten the length, resulting in excessively high overall production costs.
[0005] Therefore, in view of the shortcomings of the above scheme in actual production and implementation, it has been revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the utility model was created, and a double-safety symmetrical hydraulic connector for excavators is provided to solve the problem of poor safety of existing excavator connectors.
[0006] A hydraulic cylinder is an oil cylinder, also called a hydraulic oil cylinder, which refers to the same drive device in the industry. Utility Model Content
[0007] The utility model aims to provide a double-safety symmetrical hydraulic connector for an excavator, which is used to solve the problem of poor safety of existing excavator connectors.
[0008] The technical solution of the utility model is achieved in this way:
[0009] A double-safety symmetrical hydraulic connector for an excavator comprises a connector welding shell, a shell jaws is arranged on the connector welding shell, comprising a push cylinder and a rotating safety frame, the piston end of the push cylinder is connected to the push frame, the push frame is provided with a movable hook and a safety block, a pin shaft hole and a hook hole are arranged on the connector welding shell, the hook hole cooperates with the movable hook, the rotating safety frame comprises two safety blocks at two ends, a rotating pin shaft is arranged on the outer side of the safety block, the two rotating pin shafts are respectively rotatably connected with the pin shaft holes on both sides of the connector welding shell, the safety block at one end is connected with a safety trigger rod, and the safety block at the other end is connected with a tension spring, a limit block and a hook are arranged on the inner side of the connector welding shell, the end of the tension spring is hung on the hook, the limit block cooperates with the safety block, and when the push cylinder is in an extended state, the safety block cooperates with the jaws to form a limit placement position of the shaft.
[0010] As a preferred implementation, the safety block is provided with an arc surface and a straight surface, and the straight surface is in contact with the limit block when the push cylinder is in an extended state.
[0011] When the push cylinder is in the extended state, the straight surface of the push cylinder is in contact with the limit block, the straight surface of the safety block is in close contact with the contact surface of the limit block, and the limit block prevents the safety block from continuing to rotate, thereby achieving the limiting effect.
[0012] As a preferred implementation, when the push cylinder is in the telescopic state, the arc surface contacts the limit block, and the arc surface is slidably connected to the limit block.
[0013] When the push cylinder is in a retracted state, the arc surface contacts the limit block. When the push cylinder is in an extension or retraction process, the arc surface and the limit block slide relative to each other.
[0014] As a preferred implementation, an auxiliary slider matched with the movable hook is arranged at the inner side of the hook hole, the movable hook passes through the auxiliary slider, and the auxiliary slider is slidably connected to the movable hook.
[0015] The auxiliary slider is used to limit the sliding displacement of the movable hook in the horizontal direction so that it can keep sliding in the lateral direction (horizontal direction).
[0016] As a preferred implementation, the connector welding shell is provided with a cylinder front axle mounting process hole and a hydraulic pipe joint mounting process hole.
[0017] The holes are provided to facilitate installation of components inside the connector.
[0018] As a preferred implementation, a trigger rod limit block is provided on the inner side of the connector welding shell, and the trigger rod limit block is slidably connected to the safety trigger rod.
[0019] The trigger rod limiting block can limit the trigger rod when it slides.
[0020] As a preferred implementation, the end of the movable hook is provided with an arc surface, and the connector welding shell is provided with an adapting groove matching with the arc surface.
[0021] The movable hook cooperates with the adapting groove to form a placement position of the front axle, and clamps the front axle and the rear axle one after the other with the limiting placement position.
[0022] The beneficial effects of the utility model are:
[0023] When the utility model is in use, the push cylinder is in an extended state. At this time, the tension spring, the safety block and the safety trigger rod can work together to generate force to prevent the movable hook from moving inwards, which has a double insurance meaning: 1. After the cylinder breaks or fails, the tension spring can prevent the movable hook from moving backward through a series of linkages to prevent the front axle of the bucket from falling off, thus playing a role of insurance; 2. In the extended state, the safety block cooperates with the tiger's mouth to form a limit placement position for the shaft. Even if the front axle of the bucket falls off, the limit placement position can also lock the rear axle to prevent the rear axle of the bucket from falling off and injuring people or equipment.
[0024] In summary, the utility model has excellent safety, can effectively deal with abnormal situations and prevent the bucket from falling off, and effectively solves the problem of poor safety of existing excavator connectors. It can use conventional drive cylinders without the need for expensive square oil cylinders, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 1 ;
[0027] Figure 2 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 2 ;
[0028] Figure 3 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 3 ;
[0029] Figure 4 The three-dimensional structure of the embodiment of the utility model is shown in FIG. Figure 4 ;
[0030] Figure 5 The schematic diagram of the local structure of the utility model push cylinder in the retracted state Figure 1 ;
[0031] Figure 6 It is a partial structural schematic diagram of the utility model in which the horizontal push oil cylinder is extended;
[0032] Figure 7 The schematic diagram of the local structure of the utility model push cylinder in the retracted state Figure 2 ;
[0033] Figure 8 It is a front view of the utility model in the extended state of the push cylinder.
[0034] In the figure, 1-hook hole; 2-connector welding shell; 3-hydraulic pipe joint installation process hole; 4-pin shaft hole; 5-cylinder front axle installation process hole; 6-tension spring; 7-hook; 8-push cylinder; 9-auxiliary slide block; 10-limit block; 11-arc surface; 12-rotating safety frame; 13-trigger rod limit block; 14-safety trigger rod; 15-push frame; 16-movable hook; 17-safety block; 18-rotating pin shaft; 19-safety block; 20-straight surface; 21-adapter slot; 22-limit placement position. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0037] In addition, the descriptions of "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 number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0038] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. 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 it can be connected through an intermediate medium, or it can be a communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0039] See also Figure 1-Figure 8 The double-safety symmetrical hydraulic connector for excavators includes a connector welding shell 2, a shell jaw is provided on the connector welding shell 2, a horizontal push cylinder 8 and a rotating safety frame 12, a piston end of the horizontal push cylinder 8 is connected to a horizontal push frame 15, a movable hook 16 and a safety stopper 17 are provided on the horizontal push frame 15, a pin hole 4 and a hook hole 1 are provided on the connector welding shell 2, the hook hole 1 is matched with the movable hook 16, and the rotating safety frame 12 includes two safety blocks 19 at both ends, and the outer side of the safety block 19 is provided There is a rotating pin 18, and the two rotating pins 18 are rotatably connected to the pin holes 4 on both sides of the connector welding shell 2 respectively. The safety block 19 at one end is connected to the safety trigger rod 14, and the safety block 19 at the other end is connected to the tension spring 6. A limit block 10 and a hook 7 are set on the inner side of the connector welding shell 2, and the end of the tension spring 6 is hung on the hook 7. The limit block 10 cooperates with the safety block 19. When the push cylinder 8 is in an extended state, the safety block 19 cooperates with the tiger's mouth to form a limit placement position 22 of the shaft.
[0040] The safety block 19 is provided with an arc surface 11 and a straight surface 20 , and the straight surface 20 is in contact with the limit block 10 when the horizontal push cylinder 8 is in the extended state.
[0041] When the horizontal push cylinder 8 is in the extended state, the straight surface 20 of the horizontal push cylinder 8 is in contact with the limit block 10, the straight surface 20 of the safety block 19 is in close contact with the contact surface of the limit block 10, and the limit block 10 prevents the safety block 19 from continuing to rotate, thereby achieving the limiting effect.
[0042] When the horizontal push oil cylinder 8 is in the telescopic state, the arc surface 11 contacts the limit block 10, and the arc surface 11 is slidably connected with the limit block 10.
[0043] When the horizontal push cylinder 8 is in a contracted state, the arc surface 11 contacts the limit block 10 . When the horizontal push cylinder 8 is in an extension or contraction process, the arc surface 11 and the limit block 10 slide relative to each other.
[0044] An auxiliary slider 9 matched with the movable hook 16 is arranged inside the hook hole 1 . The movable hook 16 passes through the auxiliary slider 9 , and the auxiliary slider 9 is slidably connected with the movable hook 16 .
[0045] The auxiliary slide block 9 is used to limit the sliding displacement of the movable hook 16 in the horizontal direction so that the movable hook 16 can keep sliding in the lateral direction (horizontal direction).
[0046] The connector welding housing 2 is provided with a cylinder front axle mounting process hole 5 and a hydraulic pipe joint mounting process hole 3 .
[0047] The holes are provided to facilitate installation of components inside the connector.
[0048] A trigger rod limit block 13 is provided inside the connector welding housing 2 , and the trigger rod limit block 13 is slidably connected to the safety trigger rod 14 .
[0049] The trigger rod limiting block 13 can limit the trigger rod when it slides.
[0050] An arc surface 11 is provided at the end of the movable hook 16 , and an adapting groove 21 matching with the arc surface 11 is provided on the connector welding housing 2 .
[0051] The movable hook 16 cooperates with the adapting groove 21 to form a placement position for the front axle, and clamps the front axle and the rear axle in front and behind the limiting placement position 22.
[0052] in, Figure 1-Figure 4 The overall structure of the utility model is shown from different angles. In this structure, the push cylinder 8 of the utility model is in a telescopic state, and the movable hook 16 is retracted into the hook hole 1;
[0053] Figure 5 and Figure 6 The internal structure diagrams of the horizontal push cylinder in the contracted and extended states are shown respectively. Figure 7 yes Figure 5 Another perspective of the view;
[0054] pass Figure 8 , it can be shown that the utility model cooperates with the two shafts, the left side is the placement position, and the right side is the limit placement position 22.
[0055] The symmetrical connector of the present invention is that the present invention can be used both backward and forward, that is, there is no distinction between front and back, and it can be used both forward and reverse, which is called symmetrical.
[0056] Shown Figure 1-4 The utility model is shown in the closed state, in which the horizontal push cylinder 8 is in the shortest state (tightened state), and the movable hook 16 is retracted inward to the shortest state. At this time, the end of the cylinder drives the anti-wear safety block 19 to just retract into the connector welding shell 2, and the shell's base is not blocked. In this state, the safety trigger rod 14 is supported by the safety stopper 17 and moves backward, and the safety block 19 is retracted into the connector welding shell 2. Figure 1In the rear end (right side in the figure), the housing jaws are larger than the diameter of the mounting shaft, and the mounting shaft can be freely moved in and out of the housing jaws. In this state, the tension spring 6 is in the maximum tension state.
[0057] Figure 8 The state is in working state. In this state, the front and rear mounting shafts are respectively stuck in the placement position and the limit placement position 22. At this time, the horizontal push cylinder 8 is in an extended state, and the movable hook 16 is extended to the front end and blocked by the auxiliary slide block 9, preventing forward movement. At this time, the safety trigger rod 14 is not subjected to force.
[0058] When in Figure 8 When in the state, the internal structure of this utility is as follows Figure 6 As shown, Figure 8 From a visual perspective, at this time, the left and right sides respectively form a placement position and a limit placement position 22 that can clamp the shaft body, and can work normally. Figure 5 At this time, the tension spring 6 gives the safety block 19 a counterclockwise rotation force until the safety block 19 turns to a position where it can no longer rotate, that is, Figure 5 , Figure 8 In this state, the safety trigger rod 14 is driven by the safety block 19 to the left position, so that when the horizontal push cylinder 8 fails or loses the force to push outward, the safety stopper 17 will be supported by the safety trigger rod 14 and will not move to the right. That is, the moving whole composed of the horizontal push frame 15, the safety stopper 17, and the movable hook 16 will not move, and the state of the clamping shaft in the left placement position can still be maintained.
[0059] like Figure 8 Under working condition, if the movable hook 16 and the horizontal push cylinder 8 have rupture, pressure relief, pipe burst and other faults, the front mounting shaft ( Figure 8 After the rear axle falls off, the limit placement position 22 formed at the right side of the tiger's mouth can still clamp the rear axle, which can effectively prevent the installed rear axle from falling off, play a safety protection role, form a second layer of protection, and have a higher safety factor.
[0060] The safety block 19 is associated with the tension spring 6 and the safety trigger rod 14, and is in flexible contact. After the safety block 19 is subjected to force, it only contacts with the limit block 10, which will not affect the operation of other parts of the equipment and protect the normal service life of other parts.
[0061] The function of the limit block 10 is to limit the safety block 19 to prevent it from overturning.
[0062] The beneficial effects of the utility model are:
[0063] When the utility model is in use, the push cylinder 8 is in an extended state. At this time, the tension spring 6, the safety block 19 and the safety trigger rod 14 can work together to generate a force to prevent the movable hook 16 from moving inward, which has a double insurance meaning: 1. After the cylinder breaks or fails, the tension spring 6 can prevent the movable hook 16 from moving backward through a series of linkages to prevent the front axle of the bucket from falling off, thereby playing a role of insurance; 2. In the extended state, the safety block 19 cooperates with the tiger's mouth to form a limit placement position 22 of the shaft. Even if the front axle of the bucket falls off, the limit placement position 22 can lock the rear axle to prevent the rear axle of the bucket from falling off and injuring people or equipment.
[0064] In summary, the utility model has excellent safety, can effectively deal with abnormal situations and prevent the bucket from falling off, and effectively solves the problem of poor safety of existing excavator connectors. It can use conventional drive cylinders without the need for expensive square oil cylinders, thereby reducing production costs.
[0065] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; 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 required by the utility model.
Claims
1. A double-insurance symmetrical hydraulic connector for an excavator, comprising a connector welding shell, a shell jaws being arranged on the connector welding shell, and characterized in that: It includes a push cylinder and a rotating safety frame, the piston end of the push cylinder is connected to the push frame, the push frame is provided with a movable hook and a safety block, the connector welding shell is provided with a pin shaft hole and a hook hole, the hook hole cooperates with the movable hook, the rotating safety frame includes two safety blocks at two ends, a rotating pin shaft is provided on the outer side of the safety block, the two rotating pin shafts are respectively rotatably connected to the pin shaft holes on both sides of the connector welding shell, the safety block at one end is connected to a safety trigger rod, and the safety block at the other end is connected to a tension spring, a limit block and a hook are provided on the inner side of the connector welding shell, the end of the tension spring is hung on the hook, the limit block cooperates with the safety block, and when the push cylinder is in an extended state, the safety block cooperates with the tiger's mouth to form a limit placement position of the shaft.
2. The double-safety symmetrical hydraulic connector for excavators according to claim 1, characterized in that: The safety block is provided with an arc surface and a straight surface, and the straight surface contacts the limit block when the horizontal push oil cylinder is in an extended state.
3. The double-safety symmetrical hydraulic connector for excavators according to claim 2, characterized in that: When the push cylinder is in the extension and retraction state, the arc surface contacts the limit block, and the arc surface and the limit block are slidably connected.
4. The double-safety symmetrical hydraulic connector for excavators according to claim 1, characterized in that: An auxiliary sliding block matched with the movable hook is arranged at the inner side of the hook hole, the movable hook passes through the auxiliary sliding block, and the auxiliary sliding block is slidably connected with the movable hook.
5. The double-safety symmetrical hydraulic connector for excavators according to claim 1, characterized in that: The connector welding shell is provided with a cylinder front axle mounting process hole and a hydraulic pipe joint mounting process hole.
6. The double-safety symmetrical hydraulic connector for excavators according to claim 1, characterized in that: A trigger rod limiting block is arranged on the inner side of the connector welding shell, and the trigger rod limiting block is slidably connected with the safety trigger rod.
7. The double-safety symmetrical hydraulic connector for excavators according to claim 1, characterized in that: The end of the movable hook is provided with an arc surface, and the connector welding shell is provided with an adapting groove matched with the arc surface.