Connecting device for excavator bucket

Abstract

The utility model belongs to the technical field of excavator connection, and particularly relates to a connecting device for an excavator bucket, which comprises a connecting plate, a U-shaped groove is arranged in the middle of one end of the connecting plate, circular sleeves are fixedly connected to two sides of the U-shaped groove of the connecting plate, sleeves are arranged at two ends of the connecting plate, and one sleeve is slidably connected with the circular sleeves. The other sleeve is also fixedly connected with the other end of the connecting plate, threads are arranged in two sleeves, pin rods are in threaded connection with the interiors of the sleeves, threaded sleeves are fixedly assembled and connected to the inner ends of the pin rods, the threaded sleeves are in threaded connection with the sleeves, and positioning rings are fixedly connected to the outer ends of the pin rods; the connecting device is simple in structure, the extension length of the pin rod can be adjusted, so that different types of excavators and buckets can be connected, meanwhile, all parts of the connecting device are convenient to disassemble, meanwhile, the buckets and the connecting device are convenient to install, and the structure is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator connections, and in particular relates to a connecting device for an excavator bucket. Background Art

[0002] An excavator, also known as an excavating machine or backhoe, is an earth-moving machine that uses a bucket to dig materials above or below the surface and load them onto transport vehicles or unload them to a stockpile. The materials excavated by excavators primarily include soil, coal, silt, and pre-loosened soil and rock. In recent years, the development of construction machinery has been relatively rapid, and excavators have become one of the most important types of construction machinery.

[0003] The bucket connecting device of the excavator is a device used to connect the bucket and the lever arm. In the existing technology, the connection is usually made by hinged connection, but the length of the hinge shaft is usually fixed. When replacing the bucket, it is also necessary to find a matching pin shaft to replace the bucket. The length of the connecting device cannot be changed to adapt to the replacement of the bucket. Utility Model Content

[0004] In view of the problems raised by the above background technology, the purpose of the present utility model is to provide a connecting device for an excavator bucket to solve the problems raised by the above background technology.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0006] A connecting device for an excavator bucket comprises a connecting plate, a U-shaped groove is provided in the middle of one end of the connecting plate, circular sleeves are fixedly connected on both sides of the U-shaped groove of the connecting plate, sleeves are provided at both ends of the connecting plate, one sleeve is slidably connected to the circular sleeve, and the other sleeve is also fixedly connected to the other end of the connecting plate, a thread is provided in the sleeve, and pin rods are threadedly connected in both sleeves, the inner end of the pin rod is fixedly assembled and connected with a threaded sleeve, the threaded sleeve is threadedly connected to the sleeve, and the outer end of the pin rod is fixedly connected to a positioning ring.

[0007] Preferably, arc grooves are vertically opened in the middle of both sides of the connecting plate.

[0008] Preferably, both ends of the sleeve are detachably connected with end caps with a pin rod hole in the middle.

[0009] Preferably, the end cap is threadedly connected to the end of the sleeve.

[0010] Preferably, an anti-loosening mechanism is provided between the lower side of the sleeve fixedly connected to the connecting plate and the end of the pin rod.

[0011] Preferably, the anti-loosening mechanism includes a sliding rod and a sliding sleeve, the end of the sliding rod slides in the sliding sleeve, the lower side of the middle part of the sleeve and the lower side of the positioning ring are fixedly connected with a U-shaped block, the sliding sleeve slides in the hole opened in the U-shaped block, and a positioning piece is provided between the U-shaped block fixed on the lower side of the positioning ring and the sliding rod and the sliding sleeve that are slidably connected to the U-shaped block.

[0012] Preferably, the positioning member includes a screw, which slides in the through hole formed in the slide rod and the U-shaped block, and the end of the screw is threadedly connected with a nut.

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

[0014] The utility model has a simple structure, and the extension length of the pin rod can be adjusted, so that different types of excavators and buckets can be connected. At the same time, the various components of the connecting device are easy to disassemble, and the bucket and the connecting device are easy to install, and the structure is stable.

[0015] The utility model provides an anti-loosening mechanism at the lower sleeve. When the positioning piece is fixed to the sliding rod and the sleeve, the three U-shaped blocks are located on the same straight line, so that the positioning ring fixedly connected to the U-shaped block cannot rotate and the pin rod cannot rotate relative to the sleeve, so that the extended length of the pin rod is fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;

[0017] Figure 1 This is a structural schematic diagram of an embodiment of a connecting device for an excavator bucket according to the utility model;

[0018] Figure 2 This is a front view of a connecting device for an excavator bucket according to the utility model;

[0019] Figure 3 This is a cross-sectional view of a connecting device for an excavator bucket according to the utility model;

[0020] Figure 4 This is a schematic diagram of the extended state of the pin rod of the utility model;

[0021] Figure 5 This is a schematic diagram of the pin structure of the utility model;

[0022] The main component symbols are described as follows:

[0023] Connecting plate 1, circular ring sleeve 2, sleeve 3, end cap 31, pin rod 4, threaded sleeve 41, positioning ring 42, anti-loosening mechanism 5, sliding rod 51, sliding sleeve 52, U-shaped block 53, positioning piece 54, screw 541, nut 542. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1-5 As shown, a connecting device for an excavator bucket includes a connecting plate 1, a U-shaped groove is opened in the middle of one end of the connecting plate 1, and circular sleeves 2 are fixedly connected on both sides of the U-shaped groove of the connecting plate 1. Sleeves 3 are provided at both ends of the connecting plate 1, one sleeve 3 is slidably connected to the circular sleeve 2, and the other sleeve 3 is also fixedly connected to the other end of the connecting plate 1. A thread is provided in the sleeve 3, and a pin rod 4 is threadedly connected in the two sleeves 3. The inner end of the pin rod 4 is fixedly assembled and connected with a threaded sleeve 41, which is threadedly connected to the sleeve 3, and the outer end of the pin rod 4 is fixedly connected to a positioning ring 42.

[0026] The technical solution of this embodiment is adopted, and the connecting plate 1 is used to connect the bucket and the connecting arm of the excavator. The pin rod 4 of the upper end sleeve 3 of the connecting plate 1 is hinged with the connecting arm, and the middle part of the upper sleeve 3 is hinged with the telescopic part of the connecting arm. The upper sleeve 3 can remove the connecting plate 1, so that when the telescopic part of the connecting arm is hinged with the sleeve 3, the upper sleeve 3 can be installed in the circular sleeve 2, and the U-shaped groove is used to make way for the telescopic part so that the telescopic part can rotate relative to the sleeve 3. The upper pin rod 4 is used to adjust the position of the two sides of the connecting arm. The connecting rod is connected. After the upper pin rod 4 is connected to the connecting rods on both sides of the connecting arm, the threaded sleeve 41 of the pin rod 4 is screwed into the sleeve 3, so that the positioning ring 42 is pressed against the outer side of the connecting arm. The distance between the two pin rods 4 can be adjusted by the distance that the threaded sleeve 41 is screwed into the sleeve 3, so that it can be adapted to different excavators and excavator buckets; the pin rod 4 in the lower sleeve 3 is used to connect the bucket, and the lower pin rod 4 is located in the pin hole of the bucket, and the inner side of the positioning ring 42 is pressed against the outer side of the pin hole.

[0027] Reference Figure 1 : Arc grooves are vertically opened in the middle of both sides of the connecting plate 1.

[0028] In this embodiment, the arc groove is used to reduce the weight of the connecting plate 1 and can also reduce the stress on the arc connecting plate 1 .

[0029] Reference Figure 1 : The two ends of the sleeve 3 are detachably connected to end caps 31 with a pin hole in the middle.

[0030] In this embodiment, the end caps 31 are used to position the two ends of the sleeve 3 to prevent the sleeve 3 from sliding in the annular sleeve 2. At the same time, the pin 4 can be removed from the end caps 31, and the end caps 31 can reduce the dust that enters the sleeve 3.

[0031] The end cap 31 is threadedly connected to the end of the sleeve 3 .

[0032] In this embodiment, the end cap can be removed by twisting the nut 31 .

[0033] Reference Figure 1 : An anti-loosening mechanism 5 is provided between the lower side of the sleeve 3 fixedly connected to the connecting plate 1 and the end of the pin rod 4.

[0034] In this embodiment, the anti-loosening mechanism 5 is used to prevent relative rotation between the sleeve 3 and the positioning threaded sleeve 41 assembled and connected to the pin rod 4.

[0035] Reference Figure 2-4 : The anti-loosening mechanism 5 includes a sliding rod 51 and a sliding sleeve 52. The end of the sliding rod 51 slides in the sliding sleeve 52. A U-shaped block 53 is fixedly connected to the lower side of the middle part of the sleeve 3 and the lower side of the positioning ring 42. The sliding sleeve 52 slides in the hole opened in the U-shaped block 53. A positioning piece 54 is provided between the U-shaped block 53 fixed on the lower side of the positioning ring 42 and the sliding rod 51 and the sliding sleeve 52 that are slidably connected to the U-shaped block 53.

[0036] In this embodiment, the slide rod 51 can slide in the sleeve 52, so that it can follow the pin rod 4 according to the distance between the pin rods 4. When the slide rod 51 or the sleeve 52 moves out of the U-shaped block 53, the corresponding pin rod 4 connected to the U-shaped block 53 can rotate relative to the sleeve 3, and the positioning member 54 is used to fix the relative positions of the slide rod 51 and the sleeve 52 and the pin rod 4.

[0037] Reference Figure 4 The positioning member 54 includes a screw 541, which slides in the through hole defined by the slide rod 51 and the U-shaped block 53, and a nut 542 is threadedly connected to the end of the screw 541.

[0038] In this embodiment, the screw 541 is used to connect the U-shaped block 53 with the sliding rod 51 and the sliding sleeve 52 so that the U-shaped block 53 moves simultaneously with the sliding rod 51 and the sliding sleeve 52 .

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A connecting device for an excavator bucket, characterized in that: The invention comprises a connecting plate (1), wherein a U-shaped groove is provided in the middle of one end of the connecting plate (1), and circular sleeves (2) are fixedly connected to both sides of the U-shaped groove of the connecting plate (1), and sleeves (3) are provided at both ends of the connecting plate (1), one sleeve (3) is slidably connected to the circular sleeve (2), and the other sleeve (3) is also fixedly connected to the other end of the connecting plate (1), and threads are provided in the sleeves (3), and pins (4) are threadedly connected in the two sleeves (3), and the inner ends of the pins (4) are fixedly assembled and connected with threaded sleeves (41), and the threaded sleeves (41) are threadedly connected to the sleeves (3), and the outer ends of the pins (4) are fixedly connected with positioning rings (42).

2. The connecting device for an excavator bucket according to claim 1, characterized in that: Arc grooves are vertically provided in the middle of both sides of the connection plate (1).

3. The connecting device for an excavator bucket according to claim 2, characterized in that: The two ends of the sleeve (3) are detachably connected to end caps (31) with a pin rod hole in the middle.

4. The connecting device for an excavator bucket according to claim 3, characterized in that: The end cap (31) is threadedly connected to the end of the sleeve (3).

5. The connecting device for an excavator bucket according to claim 4, characterized in that: An anti-loosening mechanism (5) is provided between the lower side of a sleeve (3) fixedly connected to the connecting plate (1) and the end of the pin rod (4).

6. The connecting device for an excavator bucket according to claim 5, characterized in that: The anti-loosening mechanism (5) comprises a sliding rod (51) and a sliding sleeve (52), the end of the sliding rod (51) slides in the sliding sleeve (52), a U-shaped block (53) is fixedly connected to the lower side of the middle part of the sleeve (3) and the lower side of the positioning ring (42), the sliding sleeve (52) slides in the hole opened in the U-shaped block (53), and a positioning member (54) is provided between the U-shaped block (53) fixed to the lower side of the positioning ring (42) and the sliding rod (51) and the sliding sleeve (52) which are slidably connected to the U-shaped block (53).

7. The connecting device for an excavator bucket according to claim 6, characterized in that: The positioning member (54) comprises a screw (541), the screw (541) slides in a through hole formed in the slide rod (51) and the U-shaped block (53), and a nut (542) is threadedly connected to the end of the screw (541).

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