Automatic welding displacement clamping mechanism for front support of excavator

Abstract

The utility model relates to the field of excavator assembly welding, in particular to an excavator front support automatic welding deflection clamping mechanism which comprises a first machine body, a second machine body is rotationally connected to the first machine body, and a clamping assembly is rotationally connected to the second machine body. The clamping assembly comprises a bottom plate, a supporting seat is fixedly connected to the bottom plate, a pressing support is arranged on one side of the supporting seat, a fixing plate is arranged on the pressing support, an oil cylinder is arranged on the fixing plate, the output end of the oil cylinder is connected with a pressing plate, a pressing conical head is arranged on the pressing plate, a clamping base is further arranged on the bottom plate, and the clamping conical head is arranged on the clamping base. A bidirectional lead screw is connected to the clamping base through a bearing, one end of the bidirectional lead screw is connected with a hydraulic motor through a coupler, a nut is screwed on the bidirectional lead screw, and a clamping block is fixedly connected to the nut. The welding posture of the front support is effectively controlled, meanwhile, front supports of different models are compatible, and the welding quality and efficiency of the front support are improved.

Description

Technical Field

[0001] This utility model relates to the field of excavator component welding, specifically to an automatic welding displacement clamping mechanism for the front support of an excavator. Background Technology

[0002] Excavators, as an indispensable piece of construction machinery, are widely used in infrastructure construction, thus increasing market demand for their production. The front support is a crucial component of the excavator boom, and its welding quality and efficiency are of paramount importance. With the increasing variety of front supports in terms of type, size, and welding quality and efficiency requirements, the demands on the welding efficiency and quality of front supports are becoming more stringent.

[0003] Traditional assembly techniques can no longer meet the requirements of welding processes. Existing welding methods mainly rely on manual labor with the help of clamping and positioning fixtures to complete the welding work. As a result, the welding quality of the previous support is unstable, the dimensional consistency is poor, and the welding efficiency is low. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides an automatic welding displacement clamping mechanism for excavator front supports, which effectively controls the welding posture of the front supports while being compatible with different models of front supports, thereby improving the quality and efficiency of front support welding.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: an automatic welding displacement clamping mechanism for the front support of an excavator, comprising a first body, a second body rotatably connected to the first body, and a clamping assembly rotatably connected to the second body;

[0006] The clamping assembly includes a base plate, on which a support seat is fixedly connected. A clamping support is provided on one side of the support seat, and a fixing plate is provided on the clamping support. A hydraulic cylinder is provided on the fixing plate, and a pressure plate is connected to the output end of the hydraulic cylinder. A clamping cone is provided on the pressure plate. A clamping base is also provided on the base plate. A double-acting screw is connected to the clamping base through a bearing. One end of the double-acting screw is connected to a hydraulic motor through a coupling. A nut is screwed onto the double-acting screw, and a clamping block is fixedly connected to the nut.

[0007] Preferably, the second body is L-shaped, the first body is connected to the second body via a first rotating disk, the second body is connected to the clamping assembly via a second rotating disk, and the axes of the first rotating disk and the second rotating disk are arranged perpendicularly.

[0008] Preferably, the support base includes a first support base and a second support base, which are respectively disposed on both sides of the clamping base. The first support base is detachably connected to a pad and a first sensor, and the second support base is provided with a positioning block and a second sensor.

[0009] Preferably, the pressure plate is further provided with a guide rod, the fixing plate is provided with a copper sleeve, the guide rod passes through the copper sleeve and is movably connected to the pressing support, and the pressing support is further provided with a third sensor.

[0010] Preferably, the other end of the bidirectional lead screw is connected to an encoder, and a fourth sensor is also provided on the clamping base.

[0011] Preferably, the clamping base is further provided with a guide rail, which is located above the bidirectional lead screw, and the clamping block is slidably connected to the guide rail.

[0012] Preferably, a protective cover is provided above the guide rail to prevent welding slag from falling onto the bidirectional lead screw and the guide rail, and a bearing baffle is provided on the outside of the bearing.

[0013] Preferably, the base plate is provided with a hydraulic control valve, which is connected to the oil cylinder for control, and the hydraulic control valve is provided with a protective cover.

[0014] Preferably, the base plate is also provided with a lifting ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting the first and second rotating disks, this utility model can adjust the workpiece to a suitable welding position, effectively control the welding posture of the front support, and enable all welding welds of the workpiece to achieve ship-shaped welding, thereby effectively improving the welding quality of the workpiece.

[0017] 2. This utility model, through the setting of the clamping component, utilizes flexible clamping positioning and hydraulic cylinder pressing to reduce the errors caused by manual pressing positioning, is compatible with the production of multiple workpiece models, reduces production costs, improves welding efficiency, and provides a prerequisite for intelligent manufacturing.

[0018] 3. This utility model reduces maintenance costs after the support base wears out by using a replaceable pad. The first and second sensors can confirm whether the workpiece is in full contact and pressed against the first and second support bases, preventing the workpiece from being suspended.

[0019] 4. By setting up a fourth sensor and an encoder, this utility model can achieve precise positioning and clamping of the workpiece, thus improving the automation level of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic welding displacement clamping mechanism for the front support of an excavator according to this utility model.

[0021] Figure 2This is a schematic diagram of the first and second bodies of the excavator front support automatic welding displacement clamping mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the clamping assembly of the automatic welding displacement clamping mechanism for the front support of an excavator according to this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the first support seat of the automatic welding displacement clamping mechanism for the front support of an excavator according to the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the second support seat of the automatic welding displacement clamping mechanism for the front support of an excavator according to this utility model.

[0025] Figure 6 This is a schematic diagram of the pressing support of the automatic welding displacement clamping mechanism for the front support of an excavator according to the present invention.

[0026] Figure 7 This is a schematic diagram of the clamping base of the automatic welding displacement clamping mechanism for the front support of an excavator according to the present invention.

[0027] Figure 8 This is a cross-sectional view of the clamping base of the automatic welding displacement clamping mechanism for the front support of an excavator according to this utility model.

[0028] In the diagram: 1. First body; 2. Second body; 3. Clamping assembly; 4. Base plate; 5. Support base; 51. First support base; 511. Pad; 512. First sensor; 52. Second support base; 521. Positioning block; 522. Second sensor; 6. Clamping support; 61. Fixing plate; 62. Hydraulic cylinder; 63. Pressure plate; 64. Clamping cone; 65. Guide rod; 66. Copper sleeve; 67. Third sensor; 7. Clamping base; 71. Bearing; 72. Double-acting lead screw; 73. Coupling; 74. Hydraulic motor; 75. Nut; 76. Clamping block; 77. Encoder; 78. Fourth sensor; 79. Guide rail; 8. First rotating disk; 9. Second rotating disk; 10. Protective cover; 11. Bearing baffle; 12. Hydraulic control valve; 13. Lifting ring. Detailed Implementation

[0029] 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.

[0030] refer to Figures 1 to 8An automatic welding displacement clamping mechanism for the front support of an excavator includes a first body 1, a second body 2 rotatably connected to the first body 1, and a clamping assembly 3 rotatably connected to the second body 2.

[0031] The clamping assembly 3 includes a base plate 4, a support base 5 fixedly connected to the base plate 4, a clamping support 6 on one side of the support base 5, a fixing plate 61 on the clamping support 6, a hydraulic cylinder 62 on the fixing plate 61, a pressure plate 63 connected to the output end of the hydraulic cylinder 62, a clamping cone 64 on the pressure plate 63, a clamping base 7 on the base plate 4, a double-acting screw 72 connected to the clamping base 7 via a bearing 71, one end of the double-acting screw 72 connected to a hydraulic motor 74 via a coupling 73, a nut 75 screwed onto the double-acting screw 72, and a clamping block 76 fixedly connected to the nut 75.

[0032] The second body 2 is L-shaped. The first body 1 is connected to the second body 2 via the first rotating disk 8. The second body 2 is connected to the clamping assembly 3 via the second rotating disk 9. The axes of the first rotating disk 8 and the second rotating disk 9 are set vertically. The first body and the second body are equipped with servo motors and precision reducers inside to control the rotation of the first rotating disk and the second rotating disk.

[0033] The support base 5 includes a first support base 51 and a second support base 52. The first support base 51 and the second support base 52 are respectively located on both sides of the clamping base 7. The first support base 51 is detachably connected to a pad 511 and a first sensor 512. The second support base 52 is provided with a positioning block 521 and a second sensor 522.

[0034] The pressure plate 63 is also provided with a guide rod 65, and the fixed plate 61 is provided with a copper sleeve 66. The guide rod 65 passes through the copper sleeve 66 and is movably connected to the pressing support 6. The pressing support 6 is also provided with a third sensor 67.

[0035] The other end of the bidirectional lead screw 72 is connected to an encoder 77, and a fourth sensor 78 is also provided on the clamping base 7.

[0036] The clamping base 7 is also equipped with a guide rail 79, which is located above the bidirectional lead screw 72, and the clamping block 76 is slidably connected to the guide rail 79.

[0037] A protective cover 10 is provided above the guide rail 79 to prevent welding slag from falling onto the bidirectional lead screw 72 and the guide rail 79, and a bearing baffle 11 is provided on the outside of the bearing 71.

[0038] A hydraulic control valve 12 is provided on the base plate 4. The hydraulic control valve 12 is connected to the oil cylinder 62 for control. A protective cover 10 is provided on the outside of the hydraulic control valve 12.

[0039] The base plate 4 is also equipped with a lifting ring 13.

[0040] Workflow: The front support is placed onto the tooling using a handling device. The hydraulic control valve 12 is controlled to drive the oil cylinder 62 to position and clamp the workpiece using the clamping cone 64. The first sensor 512 and the second sensor 522 determine whether the workpiece is clamped. The hydraulic motor 74 is driven to rotate the bidirectional lead screw 72. The bidirectional lead screw 72 drives the clamping block 76 to clamp the workpiece through the nut 75. The data provided by the encoder 77 confirms whether the clamping is in place. Then, welding is performed. Welding can be carried out using a welding robot. The entire positioning and clamping process is unmanned, reducing the phenomenon of inaccurate positioning caused by human error and improving welding quality and efficiency.

[0041] 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. An automatic welding displacement clamping mechanism for the front support of an excavator, comprising a first body (1), characterized in that: A second body (2) is rotatably connected to the first body (1), and a clamping assembly (3) is rotatably connected to the second body (2); The clamping assembly (3) includes a base plate (4), a support seat (5) is fixedly connected to the base plate (4), a clamping support (6) is provided on one side of the support seat (5), a fixing plate (61) is provided on the clamping support (6), a hydraulic cylinder (62) is provided on the fixing plate (61), a pressure plate (63) is connected to the output end of the hydraulic cylinder (62), a clamping cone (64) is provided on the pressure plate (63), a clamping base (7) is also provided on the base plate (4), a double-acting screw (72) is connected to the clamping base (7) through a bearing (71), one end of the double-acting screw (72) is connected to a hydraulic motor (74) through a coupling (73), a nut (75) is screwed on the double-acting screw (72), and a clamping block (76) is fixedly connected to the nut (75).

2. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 1, characterized in that: The second body (2) is L-shaped. The first body (1) is connected to the second body (2) through the first rotating disk (8). The second body (2) is connected to the clamping assembly (3) through the second rotating disk (9). The axes of the first rotating disk (8) and the second rotating disk (9) are set vertically.

3. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 2, characterized in that: The support base (5) includes a first support base (51) and a second support base (52). The first support base (51) and the second support base (52) are respectively located on both sides of the clamping base (7). The first support base (51) is detachably connected to a pad (511) and a first sensor (512). The second support base (52) is provided with a positioning block (521) and a second sensor (522).

4. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 3, characterized in that: The pressure plate (63) is also provided with a guide rod (65), the fixing plate (61) is provided with a copper sleeve (66), the guide rod (65) passes through the copper sleeve (66) and is movably connected to the pressing support (6), and the pressing support (6) is also provided with a third sensor (67).

5. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 4, characterized in that: The other end of the bidirectional lead screw (72) is connected to an encoder (77), and a fourth sensor (78) is also provided on the clamping base (7).

6. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 5, characterized in that: The clamping base (7) is also provided with a guide rail (79), which is located above the bidirectional lead screw (72), and the clamping block (76) is slidably connected to the guide rail (79).

7. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 6, characterized in that: The guide rail (79) is provided with a protective cover (10) to prevent welding slag from falling onto the bidirectional lead screw (72) and the guide rail (79). The bearing (71) is provided with a bearing baffle (11) on its outside.

8. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 7, characterized in that: The base plate (4) is provided with a hydraulic control valve (12), which is connected to the oil cylinder (62) for control. The hydraulic control valve (12) is provided with a protective cover (10) on the outside.

9. The automatic welding displacement clamping mechanism for the front support of an excavator according to claim 8, characterized in that: The base plate (4) is also provided with a lifting ring (13).

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