High-strength small-size quick-change locking mechanism for excavator accessory

Abstract

The utility model discloses a quick-change locking mechanism with high strength and small volume for excavator accessories, which comprises a main body rack, an equipment frame is fixedly arranged on the inner side of the main body rack, a lock pin bracket is fixedly arranged at the end part of a main shaft of a locking oil cylinder, a bucket pin shaft is arranged between a lock pin and the equipment frame, and the lock pin bracket is fixedly arranged on the main shaft of the locking oil cylinder. The bucket pin shaft is placed in the equipment frame, the locking oil cylinder drives the lock pin support to move, the lock pin support drives the two lock pins to smoothly move at the same time, after the lock pins move, the accessory pin shaft is fixed between the equipment frame and the lock pins, the lock pins and the locking oil cylinder are arranged on the same plane in parallel, the structure is compact, and operation is convenient. The locking oil cylinder pushes the two lock pins to move at the same time through the lock pin support, the lock pins can only axially move in the equipment frame, the counter-acting force of the accessory pin shaft in the vertical direction mainly acts on the equipment frame through the lock pins, only a small part of axial force is transmitted to the locking oil cylinder, and the design requirement for the thrust of the oil cylinder is low.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator attachments, in particular to a high-strength and small-volume quick-change locking mechanism for excavator attachments. Background Art

[0002] When the existing excavator accessories need to be replaced, they need to be disassembled and installed, which is a cumbersome and inefficient process. In addition, the existing locking mechanism is not strong enough. The existing excavator adopts a swing locking mechanism with a large vertical dimension and cannot meet the usage requirements. The swing locking mechanism of the existing excavator has the disadvantage that the locking cylinder drives the swing mechanism to move and realizes the locking action of the accessory pin shaft, and the required vertical space is too large; the reaction force of the accessory pin is doubled through the lever mechanism and acts on the locking cylinder, which requires a high thrust of the cylinder.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0004] In view of the problems in the related art, the utility model proposes a high-strength and small-volume quick-change locking mechanism for excavator attachments to overcome the above-mentioned technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A high-strength and small-volume quick-change locking mechanism for excavator accessories comprises an equipment frame installed within a main frame, a locking cylinder is fixedly installed on the inner side of the equipment frame, a locking pin bracket is fixedly installed on the main shaft end of the locking cylinder, a locking pin is fixedly connected to the other side of the locking pin bracket, and a bucket pin shaft is installed between the locking pin and the equipment frame.

[0007] As a further solution of the utility model, a protective cover is installed on the top of the equipment frame, and a locking bolt is provided on the outer side of the protective cover, and the locking bolt is spirally connected to the equipment frame.

[0008] As a further solution of the utility model, the bucket pin is fixedly installed on the excavator bucket, and a semicircular groove is provided at the end of the equipment frame.

[0009] As a further solution of the utility model, the locking cylinder and the locking pin are arranged in parallel, and the locking pin is provided with two groups, and the two groups of locking pins are arranged in parallel.

[0010] As a further solution of the utility model, two ends of the locking pin bracket are respectively connected to the locking pin and the locking cylinder.

[0011] As a further solution of the utility model, the locking pin passes through the equipment frame, and the locking pin is slidably connected to the equipment frame.

[0012] The beneficial effects of the utility model are:

[0013] The utility model is provided with an equipment frame, a locking cylinder, a locking pin bracket, a locking pin, etc. When the bucket is installed, the bucket pin shaft is placed in the equipment frame, the locking cylinder drives the locking pin bracket to move, and the locking pin bracket drives two locking pins to move smoothly at the same time. After the locking pin moves, the accessory pin shaft is fixed between the equipment frame and the locking pin. The locking pin and the locking cylinder are arranged in parallel on the same plane, and the structure is compact. The locking cylinder pushes the two locking pins to move simultaneously through the locking pin bracket, and the locking pin can only move axially in the equipment frame. The reaction force of the accessory pin shaft in the vertical direction mainly acts on the equipment frame through the locking pin, and only a small part of the axial force is transmitted to the locking cylinder, and the design requirements for the cylinder thrust are relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of a high-strength and small-volume quick-change locking mechanism for excavator attachments according to an embodiment of the utility model;

[0016] Figure 2 It is an overall schematic diagram of the installation of a protective cover plate of a high-strength and small-volume quick-change locking mechanism for excavator attachments according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall structure of a device frame of a high-strength and small-volume quick-change locking mechanism for excavator attachments according to an embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the installation structure of a lock pin of a high-strength and small-volume quick-change locking mechanism for excavator attachments according to an embodiment of the utility model;

[0019] Figure 5 It is an overall bottom view of a high-strength and small-volume quick-change locking mechanism for excavator attachments according to an embodiment of the utility model.

[0020] In the figure:

[0021] 1. Equipment frame; 2. Locking cylinder; 3. Locking pin bracket; 4. Locking pin; 5. Protective cover; 6. Locking bolt; 7. Bucket pin. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the utility model, a high-strength and small-volume quick-change locking mechanism for excavator attachments is provided.

[0024] Please refer to the instruction manual Figure 1-5 According to an embodiment of the utility model, a high-strength and small-volume quick-change locking mechanism for excavator accessories includes an equipment frame 1 installed in a main frame, a locking cylinder 2 is fixedly installed on the inner side of the equipment frame 1, a locking pin bracket 3 is fixedly installed on the main shaft end of the locking cylinder 2, a locking pin 4 is fixedly connected to the other side of the locking pin bracket 3, and a bucket pin shaft 7 is installed between the locking pin 4 and the equipment frame 1.

[0025] When in use, the bucket pin shaft 7 is placed in the semicircular groove on the outer side of the equipment frame 1, and then the locking cylinder 2 drives the locking pin bracket 3 to move, and the locking pin bracket 3 drives the locking pin 4 to move synchronously. After the locking pin 4 penetrates the equipment frame 1, the bucket pin shaft 7 is clamped and fixed. The locking pin and the locking cylinder are arranged in parallel on the same plane, with a compact structure. The locking cylinder pushes the two locking pins to move simultaneously through the locking pin bracket. The locking pin can only move axially in the equipment frame. The reaction force of the tool pin shaft in the vertical direction mainly acts on the equipment frame through the locking pin, and only a small part of the axial force is transmitted to the locking cylinder, and the design requirements for the cylinder thrust are relatively low.

[0026] In one embodiment, please refer to the attached specification Figure 1-5 As a further solution of the utility model, a protective cover plate 5 is installed on the top of the equipment frame 1, and a locking bolt 6 is provided on the outer side of the protective cover plate 5, and the locking bolt 6 is spirally connected to the equipment frame 1.

[0027] The protective cover plate 5 seals the interior of the equipment frame 1 to prevent oil and dirt from entering the interior, and can also protect the locking cylinder 2 to prevent collision.

[0028] In another embodiment, please refer to the attached Figure 1-5 As a further solution of the utility model, the bucket pin 7 is fixedly installed on the excavator bucket, and a semicircular groove is provided at the end of the equipment frame 1.

[0029] As a result, the bucket pin shaft 7 is located between the equipment frame 1 and the locking pin 4, thereby completing the quick installation of the bucket.

[0030] In one embodiment, please refer to the attached specification Figure 1-5 As a further solution of the present utility model, the locking cylinder 2 and the locking pin 4 are arranged in parallel, and the locking pin 4 is provided with two groups, and the two groups of the locking pins 4 are arranged in parallel.

[0031] The locking cylinder 2 can push the locking pin 4 horizontally, thereby positioning and installing the bucket pin shaft 7.

[0032] In another embodiment, please refer to the attached Figure 1-5 As a further solution of the utility model, the two ends of the locking pin bracket 3 are respectively connected to the locking pin 4 and the locking cylinder 2, the locking pin 4 passes through the equipment frame 1, and the locking pin 4 is slidably connected to the equipment frame 1.

[0033] The locking pin 4 is stable during the movement, and the two groups of locking pins 4 jointly fix the bucket pin shaft 7 in the equipment frame 1.

[0034] When in use, the bucket pin is placed in the equipment frame, the locking cylinder drives the locking pin bracket to move, and the locking pin bracket drives the two locking pins to move smoothly at the same time. After the locking pin moves, the accessory pin is fixed between the equipment frame and the locking pin. The locking pin and the locking cylinder are arranged in parallel on the same plane with a compact structure. The locking cylinder pushes the two locking pins to move at the same time through the locking pin bracket. The locking pin can only move axially in the equipment frame. The reaction force of the accessory pin in the vertical direction mainly acts on the equipment frame through the locking pin, and only a small part of the axial force is transmitted to the locking cylinder, and the design requirements for the cylinder thrust are relatively low.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-strength and small-volume quick-change locking mechanism for excavator attachments, comprising an equipment frame (1) mounted within a main frame, characterized in that: A locking cylinder (2) is fixedly installed on the inner side of the equipment frame (1), a locking pin bracket (3) is fixedly installed on the main shaft end of the locking cylinder (2), a locking pin (4) is fixedly connected to the other side of the locking pin bracket (3), and a bucket pin shaft (7) is installed between the locking pin (4) and the equipment frame (1).

2. A high-strength and small-volume quick-change locking mechanism for excavator attachments according to claim 1, characterized in that: A protective cover plate (5) is installed at the top of the equipment frame (1), and a locking bolt (6) is provided on the outer side of the protective cover plate (5), and the locking bolt (6) is screwed to the equipment frame (1).

3. The high-strength and small-volume quick-change locking mechanism for excavator attachments according to claim 1, characterized in that: The bucket pin shaft (7) is fixedly mounted on the excavator bucket, and a semicircular groove is provided at the end of the equipment frame (1).

4. The high-strength and small-volume quick-change locking mechanism for excavator attachments according to claim 1, characterized in that: The locking oil cylinder (2) and the locking pin (4) are arranged in parallel, and the locking pin (4) is provided with two groups, and the two groups of the locking pins (4) are arranged in parallel.

5. The high-strength and small-volume quick-change locking mechanism for excavator attachments according to claim 1, characterized in that: The two ends of the lock pin bracket (3) are respectively connected to the lock pin (4) and the locking cylinder (2).

6. The high-strength and small-volume quick-change locking mechanism for excavator attachments according to claim 1, characterized in that: The locking pin (4) passes through the equipment frame (1), and the locking pin (4) is slidably connected to the equipment frame (1).

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