A wing positioning device for a shovel stick

Abstract

This utility model relates to the field of excavator stick technology, and more particularly to a blade positioning device for an excavator stick, comprising: a stick body; two blade bodies slidably inserted into the top of the stick body; a positioning cavity formed within the stick body; and a positioning assembly including a bidirectional lead screw rotatably mounted within the positioning cavity. Knobs are rotatably mounted on both sides of the stick body, and the knobs are coaxially fixed to the ends of the bidirectional lead screw. Two right-angle positioning brackets are connected to the surface of the bidirectional lead screw via reverse threads. This utility model achieves rapid positioning of the two blade bodies by inserting them into the positioning cavity through two insertion holes until they abut against a limiting rod. Controlling the rotation of the bidirectional lead screw causes the two right-angle positioning brackets to move in opposite directions until they are inserted into the positioning holes on the corresponding blade bodies. This avoids the problem of blade body misalignment during welding and effectively ensures the welding accuracy between the stick and the blades.

Description

Technical Field

[0001] This utility model relates to the field of excavator stick technology, and in particular to a blade positioning device for excavator stick. Background Technology

[0002] An excavator, also known as a digger, is an earthmoving machine that uses a bucket to excavate materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile. The stick, located in the middle of the excavator's working device, is a key component. To facilitate the installation of the hydraulic cylinders, blades are installed on the stick.

[0003] In existing technologies, the blades are welded directly to the surface of the stick after the stick assembly is complete. However, because no positioning measures are taken between the blades and the stick during this process, misalignment can easily occur between the blades and the stick during welding, resulting in poor welding accuracy. In view of the above problems, this utility model provides a blade positioning device for an excavator stick. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the background art by proposing a blade positioning device for excavator boom.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flap positioning device for an excavator stick includes:

[0007] Stick body;

[0008] Two wing-shaped bodies are slidably inserted into the top of the stick body;

[0009] The positioning cavity is located within the main body of the bucket stick;

[0010] The positioning assembly includes a bidirectional lead screw rotatably installed in the positioning cavity. Knobs are rotatably installed on both sides of the boom body, and the knobs are coaxially fixed with the end of the bidirectional lead screw. Two right-angle positioning frames are connected to the surface of the bidirectional lead screw by reverse threads, and the two right-angle positioning frames are slidably inserted into the opposite side of the two blade bodies. The two right-angle positioning frames slide through a limit frame together, and both ends of the limit frame are fixedly installed inside the positioning cavity.

[0011] Preferably, two limiting rods are fixedly installed inside the positioning cavity, and the limiting rods are in contact with the bottom of the two wing bodies.

[0012] Preferably, each knob has multiple circumferentially distributed drive grooves on its surface, and the drive grooves are offset from the axis of the knob.

[0013] Preferably, positioning holes are provided on the sides of both wing bodies, and the positioning holes are either inserted into or separated from the right-angle positioning bracket.

[0014] Preferably, the top of the positioning cavity has two insertion holes, which can be inserted into or separated from the wing body.

[0015] Preferably, both right-angle positioning frames have sliding holes on their sides, and the sliding holes are slidably connected to the limiting frame.

[0016] Compared with existing technologies, the advantages of the excavator boom flap positioning device provided by this utility model are as follows:

[0017] This invention achieves rapid positioning of the two wing bodies by inserting them into the positioning cavity through two insertion holes until they abut against the limiting rod. By controlling the rotation of the bidirectional lead screw, the two right-angle positioning frames move in opposite directions until they are inserted into the positioning holes on the corresponding wing bodies. This avoids the problem of wing body misalignment during welding and effectively ensures the welding accuracy between the boom and the wing. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural schematic diagram of a flap positioning device for an excavator boom proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a flap positioning device for an excavator boom proposed in this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of a flap positioning device for an excavator boom proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning component in the excavator boom flap positioning device proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the blade body in the blade positioning device for an excavator boom proposed in this utility model.

[0023] In the diagram: 1. Stick body, 2. Wing body, 3. Positioning cavity, 4. Two-way lead screw, 5. Right-angle positioning frame, 6. Limiting frame, 7. Knob, 8. Limiting rod, 9. Drive groove, 10. Positioning hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1 to 4 A flap positioning device for an excavator boom, comprising:

[0026] The stick body 1; two blade bodies 2, which are slidably inserted into the top of the stick body 1; a positioning cavity 3, which is opened inside the stick body 1; two insertion holes are opened at the top of the positioning cavity 3, and the insertion holes are inserted into or separated from the blade bodies 2; two limiting rods 8 are fixedly installed in the positioning cavity 3, and the limiting rods 8 are in contact with the bottom of the two blade bodies 2, so as to limit the depth of the blade bodies 2 entering the positioning cavity 3 after they are inserted into the positioning cavity 3, so as to facilitate the right angle positioning frame 5 to be accurately inserted into the positioning hole 10 on the corresponding blade body 2.

[0027] The positioning assembly includes a bidirectional lead screw 4 rotatably installed in the positioning cavity 3. Both sides of the boom body 1 are rotatably mounted with knobs 7. Each knob 7 has multiple drive grooves 9 circumferentially distributed on its surface. The drive grooves 9 are offset from the axis of the knob 7, which makes it easier for the operator to insert an external tool into the drive groove 9 and turn the knob 7 to drive the bidirectional lead screw 4 to rotate. This makes it easier for the operator to drive the bidirectional lead screw 4 to rotate.

[0028] Furthermore, the knob 7 is coaxially fixed to the end of the bidirectional lead screw 4. The surface of the bidirectional lead screw 4 is connected to two right-angle positioning brackets 5 by reverse threads. The two right-angle positioning brackets 5 are slidably inserted into the opposite side of the two wing bodies 2. The sides of the two wing bodies 2 are provided with positioning holes 10, and the positioning holes 10 are inserted into or separated from the right-angle positioning brackets 5. The two right-angle positioning brackets 5 slide through a limit frame 6, and both ends of the limit frame 6 are fixedly installed inside the positioning cavity 3. The sides of the two right-angle positioning brackets 5 are provided with sliding holes, and the sliding holes are slidably connected to the limit frame 6, which plays a role in limiting the movement of the two right-angle positioning brackets 5.

[0029] The working principle of this utility model is as follows:

[0030] In use, first insert the two blade bodies 2 into the positioning cavity 3 through the two insertion holes until they abut against the limiting rod 8. Then, the operator rotates the knob 7 or uses an external tool inserted into the drive groove 9 to control the rotation of the bidirectional lead screw 4, so that the two right-angle positioning frames 5 move in opposite directions until they are inserted into the positioning holes 10 on the corresponding blade bodies 2, thus quickly fixing the two blade bodies 2. Finally, the operator welds the connection between the blade bodies 2 and the stick body 1.

[0031] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wing positioning device for a dipper arm of an excavator, characterized by, include: Stick body (1); Two wing body bodies (2) are slidably inserted into the top of the stick body (1); The positioning cavity (3) is located inside the stick body (1); The positioning assembly includes a bidirectional lead screw (4) rotatably installed in the positioning cavity (3). A knob (7) is rotatably installed on both sides of the stick body (1), and the knob (7) is coaxially fixed with the end of the bidirectional lead screw (4). Two right-angle positioning frames (5) are connected to the surface of the bidirectional lead screw (4) by reverse threads. The two right-angle positioning frames (5) are slidably inserted on the opposite side of the two blade bodies (2). The two right-angle positioning frames (5) slide together through a limit frame (6), and both ends of the limit frame (6) are fixedly installed inside the positioning cavity (3).

2. A wing positioning device for a dipper arm of an excavating machine according to claim 1, wherein Two limiting rods (8) are fixedly installed inside the positioning cavity (3), and the limiting rods (8) are in contact with the bottom of the two wing bodies (2).

3. A wing positioning device for a dipper arm of an excavating machine as defined in claim 1, wherein, Each knob (7) has multiple drive grooves (9) arranged in a circumferential direction on its surface, and the drive grooves (9) are offset from the axis of the knob (7).

4. A wing positioning device for a dipper arm of an excavating machine as defined in claim 1, wherein, Both wing body (2) have positioning holes (10) on their sides, and the positioning holes (10) are either inserted into or separated from the right-angle positioning frame (5).

5. A wing positioning device for a dipper arm of an excavating machine as defined in claim 1 wherein, The top of the positioning cavity (3) has two insertion holes, which can be inserted into or separated from the wing body (2).

6. A wing positioning device for a dipper arm of an excavating machine as defined in claim 1, wherein, Both right-angle positioning frames (5) have sliding holes on their sides, and the sliding holes are slidably connected to the limiting frame (6).

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