Lengthened working arm of excavator

Abstract

The utility model discloses an excavator lengthened working arm which comprises an excavator small arm, a lengthened arm is connected to the front end of the excavator small arm, the front portion and the rear portion of the upper portion of the lengthened arm are fixedly hinged to a connecting rod through supporting rods, one end of the connecting rod is fixedly hinged to a hydraulic cylinder arranged on the excavator small arm, and the other end of the connecting rod is fixedly hinged to an excavator bucket connecting rod. The extension jib is connected to the small arm of the standard excavator, the guide stabilizing assembly is arranged on the lower portion of the extension jib, the extension jib is connected to the small arm of the standard excavator, the extension jib is connected to the small arm of the standard excavator, and the standard excavator can achieve the use function of a long-arm excavator by modifying the extension jib connected to the small arm of the excavator. The use range of the standard excavator is widened, the equipment utilization rate of the standard excavator is increased, the problem that the special excavator for the extension jib is difficult to lease is solved, and the construction cost of an enterprise is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of lengthening working arms of excavators, in particular to a lengthened working arm of an excavator. Background Art

[0002] During road construction, it is necessary to dig a pit for pile foundation, and an excavator is needed to operate the pit. Since the depth of the foundation pit is more than 5 meters, a long-arm excavator is needed to dig the pit. However, there are few long-arm excavators on the construction site and the cost is high, while there are many standard-arm excavators on site. Therefore, it is necessary to study the extended working arm suitable for the standard arm, which can enable the standard-arm excavator to achieve the function of the long-arm excavator to reduce construction costs. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides an extended working arm of an excavator.

[0004] The utility model is realized through the following technical solutions:

[0005] An extended working arm of an excavator comprises an excavator arm, the front end of the excavator arm is connected to an extended arm, the upper part of the extended arm is hinged and fixed to a connecting rod through a support rod and a connecting rod at the front and rear, one end of the connecting rod is hinged and fixed to a hydraulic cylinder arranged on the excavator arm, and the other end of the connecting rod is hinged and fixed to a bucket connecting rod, and the lower part of the extended arm and the excavator arm is provided with a guiding and stabilizing component.

[0006] Further optionally, the extension arm is sleeved on the end of the excavator arm and is plugged and fixed by a plurality of pins.

[0007] Further optionally, the guiding and stabilizing assembly includes a T-shaped rod fixed to the bottom of the extended arm, and one side of the T-shaped rod extends into a slot fixed at the lower part of the excavator arm for insertion and fixation.

[0008] Further optionally, a jack is installed at the lower part of the excavator arm, the jack base is fixedly connected to the excavator arm, and the top rod of the jack is connected to the end of the T-shaped rod by a pin.

[0009] Further optionally, the end of the extension arm is hingedly fixed to the bucket.

[0010] Compared with the existing technology, the beneficial effects of the utility model are as follows: the utility model connects an extended arm to the forearm of a standard excavator, and provides a guiding and stabilizing component at the lower part of the extended arm. By modifying the forearm of the excavator to connect to the extended arm, the standard excavator can realize the use function of a long-arm excavator, thereby broadening the use scope of the standard excavator, increasing the utilization rate of the standard excavator equipment, alleviating the difficulty in renting a special excavator with an extended arm, and greatly reducing the construction cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 yes Figure 1 A schematic enlarged view of the local structure in FIG.

[0013] Figure 3 It is a structural schematic diagram of the practical guiding and stabilizing component;

[0014] In the figure: excavator arm 1, extension arm 2, connecting rod 3, support rod 4, pin 5, guide stabilizing component 6, T-shaped rod 7, slot 8, jack 9, bucket 10. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0016] like Figure 1 As shown, an extended working arm of an excavator comprises an excavator arm 1, an extended arm 2 is connected to the front end of the excavator arm 1, the upper front and rear parts of the extended arm 2 are hinged and fixed to the connecting rod 3 through a support rod 4, one end of the connecting rod 3 is hinged and fixed to a hydraulic cylinder arranged on the excavator arm 1, and the other end of the connecting rod 3 is hinged and fixed to a connecting rod of a bucket 10, the action of the hydraulic cylinder can be transmitted to the action of the bucket 10 through the connecting rod 3, and a guiding and stabilizing component 6 is arranged at the lower part of the extended arm 2 and the excavator arm 1, the guiding and stabilizing component 6 can facilitate the disassembly and assembly of the extended arm 2, and can also increase the strength of the connection between the extended arm 2 and the excavator arm 1.

[0017] like Figure 1 As shown, the extension arm 2 is sleeved on the end of the excavator arm 1 and is plugged and fixed through a plurality of pins 5.

[0018] like Figure 3 As shown, the guide and stabilizing assembly 6 includes a T-shaped rod 7 fixed at the bottom of the extended arm 2, and one side of the T-shaped rod 7 extends into a slot 8 fixed at the lower part of the excavator arm 1 for insertion and fixing.

[0019] like Figure 2 As shown, a jack 9 is installed at the lower part of the excavator arm 1, the base of the jack 9 is fixedly connected to the excavator arm 1, and the top rod of the jack 9 is connected to the end of the T-shaped insertion rod 7 by a pin.

[0020] like Figure 1 As shown, the end of the extension arm 2 is hingedly fixed to the bucket 10.

[0021] The implementation principle of the extended working arm of an excavator in the embodiment of the present application is:

[0022] Before use, first remove the bucket 10 of the standard arm excavator, then place the extended arm 2 at the end of the excavator arm 1, insert the end of the T-shaped rod 7 of the guide and stabilizing assembly 6 of the extended arm 2 into the slot 8 at the lower part of the excavator arm 1, and move the extended arm 2 forward along the slot 8, so that the extended arm 2 is quickly sleeved on the corresponding end of the excavator arm 1;

[0023] Then connect the jack 9 with the T-shaped plug rod 7, and make the extension arm 2 and the sockets on the excavator arm 1 correspond to each other through the fine adjustment of the jack 9, insert the pin 5 into the corresponding socket for fixing, and connect the extension arm 2, bucket 10, connecting rod 3 and hydraulic cylinder after fixing, and use them after connection, so that the excavator arm 1 can realize the excavation of a large depth foundation pit through the extension of the extension arm 2, and at the same time, the guiding and stabilizing component 6 can also strengthen the connection strength between the excavator arm 1 and the extension arm 2, avoid the large shaking of the excavator arm 1 after the extension, and improve the stability of the excavator arm 1 and the extension arm 2 as a whole. Through the transformation of the excavator arm 1 connecting the extension arm 2, the standard excavator can realize the use function of the long arm excavator, broaden the use scope of the standard excavator, increase the utilization rate of the standard excavator equipment, alleviate the difficulty of renting the special excavator for the extension arm, and greatly reduce the construction cost of the enterprise.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An extended working arm of an excavator, comprising an excavator arm (1), characterized in that: The front end of the excavator arm (1) is connected to an extension arm (2), the upper part of the extension arm (2) is hinged and fixed to the connecting rod (3) through a support rod (4) at the front and rear, one end of the connecting rod (3) is hinged and fixed to a hydraulic cylinder arranged on the excavator arm (1), and the other end of the connecting rod (3) is hinged and fixed to a bucket (10) connecting rod, and the lower part of the extension arm (2) and the excavator arm (1) is provided with a guiding and stabilizing component (6).

2. The excavator extended working arm according to claim 1, characterized in that: The extended arm (2) is sleeved on the end of the excavator arm (1) and is plugged and fixed via a plurality of pins (5).

3. The excavator extended working arm according to claim 1, characterized in that: The guiding and stabilizing component (6) comprises a T-shaped plug rod (7) fixed at the bottom of the extended arm (2), and one side of the T-shaped plug rod (7) extends into a slot (8) fixed at the lower part of the excavator arm (1) for plugging and fixing.

4. The extended working arm of an excavator according to claim 2, characterized in that: A jack (9) is installed at the lower part of the excavator arm (1); the base of the jack (9) is fixedly connected to the excavator arm (1); and the top rod of the jack (9) is connected to the end of the T-shaped insertion rod (7) by a latch.

5. The excavator extended working arm according to claim 2, characterized in that: The end of the extended arm (2) is hingedly fixed to the bucket (10).

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