A welding positioning fixture for an excavator slewing platform

Abstract

This utility model relates to the field of positioning fixture technology, specifically to a welding positioning fixture for an excavator slewing platform. It includes a chassis, a turntable mounted on top of the chassis, a gear two mounted on one side of the turntable, a motor two mounted above the gear two, a positioning cone fixedly connected to the bottom of the turntable, and several sliding grooves formed on the top outer wall of the turntable. A moving mechanism is located inside the turntable; the moving mechanism includes a first bidirectional lead screw, a second bidirectional lead screw, and a clamping mechanism. This utility model, through the establishment of the moving mechanism, can fix slewing platforms of different sizes and specifications, thus meeting the positioning requirements of slewing platforms of different models and dimensions. Furthermore, a single driving force can achieve fixation in four directions, achieving positioning effect while saving energy. The clamping mechanism facilitates the fixing of slewing platforms of different thicknesses, providing a wide range of clamping adaptability.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, specifically a welding positioning fixture for an excavator slewing platform. Background Technology

[0002] The excavator slewing platform refers to the rotating part of the excavator, which is usually composed of a slewing bearing, slewing shaft, gears, hydraulic motor, slewing reducer, etc. It is an important component of the excavator. The excavator slewing platform is often disc-shaped and can rotate 360 ​​degrees, allowing the excavator to quickly and flexibly adjust its working direction in a fixed position, thereby improving work efficiency.

[0003] In related technologies, welding positioning fixtures used for excavator slewing platforms are often not suitable for slewing platforms of different models and sizes when performing clamping and positioning work. The clamping size is relatively fixed and cannot be flexibly adjusted. In addition, traditional tooling has low positioning accuracy and slow clamping efficiency.

[0004] Therefore, a welding positioning fixture for the excavator slewing platform is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a welding positioning fixture for excavator slewing platforms, which solves the problems of low positioning accuracy and limited clamping compatibility. It facilitates the fixing of slewing platforms of different thicknesses, and the clamping effect can be manually adjusted. It can also fix slewing platforms of different sizes and specifications, thereby meeting the positioning requirements of slewing platforms of different models and sizes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including a chassis, a turntable is provided above the chassis, a gear two is installed on one side of the turntable on the chassis, a motor two is provided above the gear two, a positioning cone is fixedly connected to the bottom of the turntable, a plurality of sliding grooves are provided on the top outer wall of the turntable, and a moving mechanism is provided inside the turntable;

[0007] The moving mechanism includes a bidirectional lead screw one, a bidirectional lead screw two, and a clamping mechanism. A horizontal bevel gear is provided in the middle of the outer wall of the bidirectional lead screw two, and a vertical bevel gear is provided in the vertical direction of the horizontal bevel gear. A gear one is provided on the outer wall of the bidirectional lead screw one, and clamping mechanisms are symmetrically provided on the outer walls of both the bidirectional lead screw one and the bidirectional lead screw two.

[0008] The top of the clamping mechanism is movably connected to a slide rod, the bottom of the slide rod is movably connected to a slider, and the bottom of the clamping mechanism is fixedly connected to a guide rod. The guide rod is movably connected to both the first and second bidirectional lead screws.

[0009] Preferably, a welding device is provided above the chassis, the second motor and the first motor are electrically connected to an external power source, a toothed block is provided on the outer wall of the turntable, the turntable meshes with the second gear, and a conical groove that fits with the positioning cone is provided at the junction of the chassis and the positioning cone.

[0010] Preferably, the outer wall of the slide rod is provided with threads, and the top of the slide rod is provided with a handle.

[0011] Preferably, the outer walls of the front and rear sides of the slider are arc-shaped, the inner wall of the clamping mechanism at the junction with the slider is arc-shaped to match it, the clamping mechanism has a hole at the junction with the slide rod, and the inner wall of the hole is provided with a thread that meshes with the slide rod.

[0012] Preferably, the bottom of the guide rod is annular, the top of the guide rod is rectangular, and the width of the top is less than the width of the groove, while the bottom width of the clamping mechanism is greater than the width of the groove.

[0013] Preferably, the outer walls of both the first and second bidirectional lead screws are symmetrically provided with threads in opposite directions, the first and second bidirectional lead screws are movably connected to the inner wall of the turntable, and the vertical bevel gear is movably connected to the interior of the turntable.

[0014] Preferably, the axes of the horizontal bevel gear and the vertical bevel gear intersect at 90 degrees. The tooth surface on the front of the horizontal bevel gear is set in a conical shape. The vertical bevel gear has a bevel gear meshing with it on the side that contacts the horizontal bevel gear. A tooth block meshing with the gear is provided on the outer wall of the other side of the vertical bevel gear.

[0015] Compared with the prior art, this utility model provides a welding positioning fixture for an excavator slewing platform, which has the following beneficial effects:

[0016] 1. By establishing a moving mechanism, it is possible to fix rotary platforms of different specifications and sizes, thereby meeting the positioning requirements of rotary platforms of different models and sizes. Moreover, it can achieve fixation in four directions with a single driving force, achieving positioning effect while saving energy.

[0017] 2. The clamping mechanism facilitates the fixing of rotary platforms of different thicknesses, adapts to rotary platforms of different specifications and sizes, and the clamping effect can be manually adjusted, with a wide range of clamping compatibility. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged view of the clamping mechanism of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the moving mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the bottom of the turntable of this utility model.

[0022] In the diagram: 1. Chassis; 2. Turntable; 21. Positioning cone; 22. Slide groove; 3. Clamping mechanism; 31. Slide rod; 32. Slider; 33. Guide rod; 4. Moving mechanism; 41. Double-acting lead screw one; 42. Gear one; 43. Double-acting lead screw two; 44. Horizontal bevel gear; 45. Vertical bevel gear; 46. Motor one; 5. Gear two; 6. Motor two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example:

[0025] Please see Figure 1 - Figure 4 In this embodiment, a welding positioning fixture for an excavator slewing platform includes a chassis 1, a turntable 2 is provided above the chassis 1, a gear 5 is installed on one side of the turntable 2 on the chassis 1, a motor 6 is provided above the gear 5, a positioning cone 21 is fixedly connected to the bottom of the turntable 2, a plurality of sliding grooves 22 are provided on the top outer wall of the turntable 2, and a moving mechanism 4 is provided inside the turntable 2.

[0026] The moving mechanism 4 includes a first bidirectional lead screw 41, a second bidirectional lead screw 43, and a clamping mechanism 3. A horizontal bevel gear 44 is provided in the middle of the outer wall of the second bidirectional lead screw 43, and a vertical bevel gear 45 is provided in the vertical direction of the horizontal bevel gear 44. A gear 42 is provided on the outer wall of the first bidirectional lead screw 41, and clamping mechanisms 3 are symmetrically provided on the outer walls of both the first bidirectional lead screw 41 and the second bidirectional lead screw 43.

[0027] The top of the clamping mechanism 3 is movably connected to a slide rod 31, the bottom of the slide rod 31 is movably connected to a slider 32, and the bottom of the clamping mechanism 3 is fixedly connected to a guide rod 33. The guide rod 33 is movably connected to both the first bidirectional lead screw 41 and the second bidirectional lead screw 43.

[0028] The chassis 1 is equipped with a welding device on top. Motor 2 6 and Motor 1 46 are electrically connected to an external power source. The outer wall of the turntable 2 is equipped with toothed blocks. The turntable 2 meshes with gear 2 5. The chassis 1 has a conical groove that fits into the positioning cone 21 at the junction with the positioning cone 21. The positioning cone 21 facilitates the starting of motor 2 6 to drive gear 2 5, thereby causing the turntable 2 to rotate around the positioning cone 21. The position of the reassembly platform can be easily adjusted through the turntable 2.

[0029] The slide bar 31 has threads on its outer wall and a handle on its top. The slide bar 31 allows the slider 32 to be rotated and then moved linearly along the inner wall of the clamping mechanism 3 to achieve the clamping effect.

[0030] The outer walls of the front and rear sides of the slider 32 are set in an arc shape, and the inner wall of the clamping mechanism 3 at the junction with the slider 32 is set in an arc shape to match it. The clamping mechanism 3 has a hole at the junction with the slide rod 31, and the inner wall of the hole is provided with a thread that meshes with the slide rod 31. The clamping mechanism 3 facilitates the clamping of the rotary platform.

[0031] The bottom of the guide rod 33 is set as an annular shape, and the top of the guide rod 33 is set as a rectangle. The width of the top is smaller than the width of the slide groove 22, and the bottom width of the clamping mechanism 3 is larger than the width of the slide groove 22. By setting the slide groove 22, the clamping mechanism 3 can be easily moved along a straight line, so as to adapt to rotary platforms of different specifications and sizes.

[0032] The outer walls of the first bidirectional lead screw 41 and the second bidirectional lead screw 43 are symmetrically provided with threads in opposite directions. The first bidirectional lead screw 41 and the second bidirectional lead screw 43 are movably connected to the inner wall of the turntable 2, and the vertical bevel gear 45 is movably connected to the interior of the turntable 2. By setting up the first bidirectional lead screw 41 and the second bidirectional lead screw 43, it is easy to drive the clamping mechanism 3 movably connected on its outer wall to move synchronously towards the center.

[0033] The axes of the horizontal bevel gear 44 and the vertical bevel gear 45 intersect at a 90-degree angle. The tooth surface of the horizontal bevel gear 44 is tapered. The vertical bevel gear 45 has a bevel gear meshing with the horizontal bevel gear 44 on the side that connects to it. The outer wall of the other side of the vertical bevel gear 45 has a tooth block that meshes with gear 42. By setting up the vertical bevel gear 45, it is convenient that when the motor 46 drives the bidirectional lead screw 43 to rotate, the horizontal bevel gear 44 connected to its outer wall will rotate accordingly, and then drive the vertical bevel gear 45 that meshes with it to rotate in the vertical direction. This will then drive the gear 42 connected to the other side of the vertical bevel gear 45 to rotate, so that the bidirectional lead screw 41 will also rotate. This achieves the effect of rotating the bidirectional lead screw 41. Thus, the driving force of the motor 46 can drive the four clamping mechanisms 3 to move linearly towards the center at the same time, saving energy and achieving the positioning effect.

[0034] The working principle of the above embodiments is as follows:

[0035] In use, first place the rotary platform above the turntable 2, start motor 46. When motor 46 drives the double-acting lead screw 43 to rotate, the horizontal bevel gear 44 connected to its outer wall rotates accordingly, then drives the vertical bevel gear 45 meshing with it to rotate in the vertical direction, and then drives the gear 42 connected to the other side of the vertical bevel gear 45 to rotate, thereby causing the double-acting lead screw 41 to also rotate. After the double-acting lead screw 41 and double-acting lead screw 43 rotate, they can drive the clamping mechanism 3 movably connected to their outer walls to rotate synchronously. Moving the center allows the motor 46 to drive the four clamping mechanisms 3 to move linearly towards the center, thus positioning the rotary platform in the center of the turntable 2. Then, rotating the slide bar 31 pushes the slider 32 to move linearly along the inner wall of the clamping mechanism 3, thereby clamping the rotary platform. Subsequently, the motor 6 drives the gear 5, causing the turntable 2 to rotate around the positioning cone 21. The turntable 2 allows for easy adjustment of the reloading platform, placing it at the welding location for welding work.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding positioning fixture for an excavator slewing platform, characterized in that: Includes a chassis (1), a turntable (2) is provided above the chassis (1), a gear two (5) is installed on one side of the turntable (2) on the chassis (1), a motor two (6) is provided above the gear two (5), a positioning cone (21) is fixedly connected to the bottom of the turntable (2), a number of sliding grooves (22) are provided on the top outer wall of the turntable (2), and a moving mechanism (4) is provided inside the turntable (2). The moving mechanism (4) includes a bidirectional lead screw one (41), a bidirectional lead screw two (43), and a clamping mechanism (3). A horizontal bevel gear (44) is provided in the middle of the outer wall of the bidirectional lead screw two (43). A vertical bevel gear (45) is provided in the vertical direction of the horizontal bevel gear (44). A gear one (42) is provided on the outer wall of the bidirectional lead screw one (41). The clamping mechanisms (3) are symmetrically provided on the outer walls of both the bidirectional lead screw one (41) and the bidirectional lead screw two (43). The top of the clamping mechanism (3) is movably connected to a slide rod (31), the bottom of the slide rod (31) is movably connected to a slider (32), and the bottom of the clamping mechanism (3) is fixedly connected to a guide rod (33). The guide rod (33) is movably connected to both the first bidirectional lead screw (41) and the second bidirectional lead screw (43).

2. The welding positioning fixture for an excavator slewing platform according to claim 1, characterized in that: A welding device is provided above the chassis (1). The second motor (6) and the first motor (46) are electrically connected to an external power source. A toothed block is provided on the outer wall of the turntable (2). The turntable (2) meshes with the second gear (5). The chassis (1) has a conical groove that fits with the positioning cone (21) at the junction with the positioning cone (21).

3. The welding positioning fixture for an excavator slewing platform according to claim 1, characterized in that: The outer wall of the slide rod (31) is provided with threads, and the top of the slide rod (31) is provided with a handle.

4. The welding positioning fixture for an excavator slewing platform according to claim 1, characterized in that: The outer walls of the front and rear sides of the slider (32) are set in an arc shape. The inner wall of the clamping mechanism (3) at the junction with the slider (32) is set in an arc shape that matches it. The clamping mechanism (3) has a hole at the junction with the slide rod (31), and the inner wall of the hole is provided with a thread that meshes with the slide rod (31).

5. The welding positioning fixture for an excavator slewing platform according to claim 1, characterized in that: The bottom of the guide rod (33) is set as an annular shape, the top of the guide rod (33) is set as a rectangle, and the width of the top is less than the width of the groove (22). The bottom width of the clamping mechanism (3) is greater than the width of the groove (22).

6. A welding positioning fixture for an excavator slewing platform according to claim 5, characterized in that: The outer walls of the first bidirectional lead screw (41) and the second bidirectional lead screw (43) are symmetrically provided with threads in opposite directions. The first bidirectional lead screw (41) and the second bidirectional lead screw (43) are movably connected to the inner wall of the turntable (2). The vertical bevel gear (45) is movably connected to the interior of the turntable (2).

7. The welding positioning fixture for an excavator slewing platform according to claim 1, characterized in that: The axes of the horizontal bevel gear (44) and the vertical bevel gear (45) intersect at ninety degrees. The tooth surface on the front of the horizontal bevel gear (44) is set as conical. The vertical bevel gear (45) has a bevel gear that meshes with the horizontal bevel gear (44) on the side that connects with it. The outer wall of the other side of the vertical bevel gear (45) has a tooth block that meshes with gear one (42).

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