Frame clamping mechanism

Abstract

The utility model discloses a frame clamping mechanism which comprises a reloading clamp, an overturning pressing arm, a connecting shaft, a positioning component, a locking component and a supporting arm, the rear portion of the supporting arm is connected to the side portion of the reloading clamp, and the front portion of the overturning pressing arm is hinged to the upper portion of the supporting arm. The connecting shaft is installed between the downward pressing concave face of the overturning pressing arm and the supporting concave face of the supporting arm, a plurality of connecting shaft through holes are formed in the connecting shaft in the radial direction, and a positioning groove is formed in the outer wall of the connecting shaft. The positioning part comprises a stop block and a positioning screw, the stop block is installed in the positioning groove, and the positioning screw penetrates through a stop block through hole to be connected to the first threaded hole of the positioning groove; the locking component comprises an adjusting sleeve, a fixing bolt and a locking nut, the adjusting sleeve is provided with an adjusting sleeve through hole and an adjusting thread in the radial direction, the locking nut is installed on the adjusting thread, the connecting shaft is sleeved with the adjusting sleeve, and the fixing bolt is arranged in the adjusting sleeve through hole and the connecting shaft through hole in a penetrating mode. According to the utility model, the clamping of frames of different models can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding and clamping of a mining dump truck frame, and in particular relates to a frame clamping mechanism. Background Art

[0002] The frames of mining dump trucks all require positional welding. Since the frame sizes of different models are also different, different process equipment needs to be replaced when welding and clamping the frames of different models, which reduces the changeover efficiency. In addition, the cost of tooling production and manufacturing is also very high. Utility Model Content

[0003] The utility model aims to provide a frame clamping mechanism, which can realize the clamping of frames of different models, greatly improve the clamping efficiency, and enhance the flexibility of production.

[0004] In order to achieve the above purpose, the technical solution used in this utility model is:

[0005] The frame clamping mechanism includes: a changing fixture, a flip pressure arm, a connecting shaft, a positioning component, a locking component, and a support arm. The rear of the support arm is connected to the side of the changing fixture. A supporting platform is arranged at the rear of the support arm. A supporting concave surface is arranged on the supporting platform. A fixing bolt is hinged at the rear of the support platform. A fixing nut is installed on the upper part of the fixing bolt. The front of the flip pressure arm is hinged at the upper part of the support arm. A pressing concave surface is arranged below the rear of the flip pressure arm. The pressing concave surface and the supporting concave surface are located oppositely. A fixing opening is arranged at the rear end of the flip pressure arm. The clamping bolt is located in the fixing opening. The clamping nut is located on the upper part of the fixing opening. The connecting shaft is installed on the pressing concave surface and the supporting concave surface. A plurality of connecting shaft through holes are radially arranged on the connecting shaft, a positioning groove is arranged on the outer wall, and a first threaded hole is arranged on the positioning groove; the positioning component comprises: a block and a positioning screw, the block is provided with a block through hole, the block is installed in the positioning groove, and the positioning screw passes through the block through hole and is connected to the first threaded hole; the locking component comprises: an adjusting sleeve, a fixing bolt, and a locking nut, the adjusting sleeve is radially provided with an adjusting sleeve through hole, an annular boss is arranged on the outer wall, the annular boss is provided with an adjusting thread, the locking nut is installed on the adjusting thread, the adjusting sleeve is mounted on the connecting shaft using the adjusting sleeve through hole, the fixing bolt is passed through the adjusting sleeve through hole and the connecting shaft through hole, and is fixed using the fixing nut.

[0006] Furthermore, the replacement fixture is provided with a plurality of fixture through holes, and the front portion of the replacement fixture is connected to a fixture sub-plate via the fixture through holes.

[0007] Furthermore, the outer wall of the connecting shaft is provided with two positioning grooves, which are annular in shape. Two blocks on the same side are located on both sides of the first threaded hole. The replacement fixture is connected to two support arms, and the blocks are located outside the support arms.

[0008] Furthermore, a plurality of second threaded holes are provided at both ends and the outer wall of the connecting shaft, and the second threaded holes are provided with hanging ears for installation.

[0009] Furthermore, a handle is provided at the rear end of the flip pressure arm, and a plurality of force rods are provided on the outer wall of the locking nut.

[0010] Furthermore, a step end is provided at the end of the adjustment sleeve, and the annular boss is located between the adjustment sleeve through hole and the step end.

[0011] The technical effects of the utility model include:

[0012] The utility model can realize fast and adjustable clamping of frames of different models, greatly improve the clamping efficiency, enhance the flexibility of production, and save a lot of special tooling design and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the frame clamping mechanism in the utility model;

[0014] Figure 2 It is a schematic diagram of the longitudinal section structure of the frame clamping mechanism in the utility model;

[0015] Figure 3 It is a schematic diagram of the use state of the frame clamping mechanism in the utility model. DETAILED DESCRIPTION

[0016] The following description sufficiently illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce the same.

[0017] In the following description, the side close to the frame 7 is the rear portion, and the side away from the frame 7 is the front portion.

[0018] like Figure 1 As shown, it is a structural schematic diagram of the frame clamping mechanism in the utility model; Figure 1 The figure is a schematic diagram of the longitudinal section structure of the frame clamping mechanism of the utility model.

[0019] The frame clamping mechanism comprises: a changing fixture 1, a flip pressing arm 2, a connecting shaft 3, a positioning component 4, a locking component 5, and a supporting arm 6.

[0020] The rear portion of the support arm 6 is connected to the side of the changing fixture 1, and the changing fixture 1 is provided with a plurality of fixture through holes 11 (for connecting to a turning machine or a fixture sub-plate 12).

[0021] A support platform is provided at the rear of the support arm 6, a support concave surface is provided on the support platform, a fixing bolt 61 is hinged at the rear of the support platform, and a fixing nut 62 is installed on the upper part of the fixing bolt 61. The replacement fixture 1 is connected with two support arms 6, which can improve the supporting force and the stability of the clamped workpiece 7.

[0022] The front part of the flip pressing arm 2 is hinged to the upper part of the support arm 6, and a downward pressing concave surface is provided at the lower part of the rear part of the flip pressing arm 2. The downward pressing concave surface and the support concave surface are located opposite to each other. A fixing opening 21 is provided at the rear end of the flip pressing arm 2, and a clamping bolt 61 is located in the fixing opening 21, and a clamping nut 62 is located at the upper part of the fixing opening 21. The rear parts of the flip pressing arm 2 and the support arm 6 are fixedly connected, and the connecting shaft 3 is installed between the downward pressing concave surface and the support concave surface, so as to clamp the connecting shaft 3. A handle 22 is provided at the rear end of the flip pressing arm 2.

[0023] The connecting shaft 3 is radially provided with a plurality of connecting shaft through holes 31 to adapt to the sizes of different vehicle models. The outer wall is provided with a positioning groove, and the positioning groove is provided with a first threaded hole. The outer wall of the connecting shaft 3 is provided with two positioning grooves, and the positioning groove is annular. The two ends and the outer wall of the connecting shaft 3 are provided with a plurality of second threaded holes, and the second threaded holes are provided with hanging ears 32.

[0024] The positioning component 4 includes: a stopper 41 and a positioning screw 42. The stopper 41 is provided with a stopper through hole, the stopper 41 is installed in the positioning groove, and the positioning screw 42 passes through the stopper through hole and is connected to the first threaded hole. Two stoppers 41 on the same side are located on both sides of the first threaded hole.

[0025] The locking component 5 includes: an adjusting sleeve 51, a fixing bolt 52, and a locking nut 53. The adjusting sleeve 51 is radially provided with an adjusting sleeve through hole, an annular boss is provided on the outer wall, an adjusting thread is provided on the annular boss, a step end is provided on the end, the outer diameter of the step end matches the inner hole of the frame 7, and the annular boss is located between the adjusting sleeve through hole and the step end; the locking nut 53 is installed on the adjusting thread, and a plurality of force rods are provided on the outer wall of the locking nut 53; the adjusting sleeve 51 is sleeved on the connecting shaft 3, the inner hole of the adjusting sleeve 51 matches the diameter of the connecting shaft 3, the fixing bolt 52 is passed through the adjusting sleeve through hole and the connecting shaft through hole 31, and is fixed by the fixing nut.

[0026] The step end cooperates with the inner hole of the frame 7 to achieve radial positioning of the frame 7 .

[0027] like Figure 3 The figure is a schematic diagram of the use state of the frame clamping mechanism in the utility model.

[0028] The specific method of using the frame clamping mechanism is as follows:

[0029] Step 1: Connect the frame clamping mechanisms to the two rotating mechanisms of the turning machine respectively, and use the sling to move the frame 7 between the two frame clamping mechanisms;

[0030] The clamp fixing bolt passes through the clamp through hole 11 to connect to the rotating mechanism, or the clamp sub-plate 12 is connected to the front of the replacement clamp 1 using the clamp fixing bolt, and then the clamp sub-plate 12 is connected to the rotating mechanism through the clamp fixing bolt and the clamp sub-plate 12.

[0031] Step 2: Connect the two ends of the frame 7 to the two frame clamping mechanisms respectively, and operate the turning machine to perform position-shift welding on the frame 7.

[0032] 1. The hook of the lifting device is hooked into the lifting ear 32, and the connecting shaft 3 is moved to the side of the frame 7. The two connecting shafts 3 pass through the inner holes on both sides of the frame 7 respectively, and the operating handle 22 opens the flip pressing arm 2;

[0033] 2. Clamp the two connecting shafts 3 by using the flip pressing arm 2 and the supporting arm 6 respectively;

[0034] Operate the two rotating mechanisms to place the two connecting shafts 3 into the supporting concave surfaces respectively, lower the flip pressure arm 2, flip the fixing bolt 61 into the fixing opening 21 of the flip pressure arm 2, install the fixing nut 62 on the upper part of the fixing bolt 61, and clamp the connecting shaft 3 between the supporting concave surface and the pressing concave surface respectively.

[0035] 3. Use the positioning component 4 to axially fix the connecting shaft 3;

[0036] The stoppers 41 are respectively installed in the positioning grooves (the stoppers 41 are located inside the inner hole of the frame 7), the positioning screws 42 pass through the stopper through holes and are connected to the first threaded holes, the stoppers 41 are located outside the flip pressure arm 2 and the support arm 6, and the axial position of the connecting shaft 3 is limited by the stoppers 41.

[0037] 4. Use the locking component 5 to fine-tune and clamp the connecting shaft 3.

[0038] The adjusting sleeve 51 is put on the connecting shaft 3 (the adjusting sleeve 51 is located outside the inner hole of the frame 7), the stepped end head at the end is inserted into the inner hole of the frame 7 (the stepped end head and the inner hole match), the fixing bolt 52 passes through the adjusting sleeve through hole and the connecting shaft through hole 31 and is fixed by the fixing nut to fix the adjusting sleeve 51 on the connecting shaft 3; the locking nut 53 is installed on the adjusting thread of the annular boss, the locking nut 53 is rotated by the force rod to fine-tune and clamp the frame 7, and the frame 7 is axially clamped by the two stepped ends to achieve axial positioning of the frame 7.

[0039] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A frame clamping mechanism, characterized in that: include: A changing fixture, a flip pressure arm, a connecting shaft, a positioning component, a locking component, and a support arm. The rear of the support arm is connected to the side of the changing fixture. A supporting platform is provided at the rear of the support arm. A supporting concave surface is provided on the supporting platform. A fixing bolt is hinged at the rear of the supporting platform. A fixing nut is installed on the upper part of the fixing bolt. The front of the flip pressure arm is hinged at the upper part of the support arm. A pressing concave surface is provided at the lower rear of the flip pressure arm. The pressing concave surface and the supporting concave surface are relatively positioned. A fixing opening is provided at the rear end of the flip pressure arm. The clamping bolt is located in the fixing opening. The clamping nut is located on the upper part of the fixing opening. The connecting shaft is installed between the pressing concave surface and the supporting concave surface. The shaft is radially provided with a plurality of connecting shaft through holes, the outer wall is provided with a positioning groove, and the positioning groove is provided with a first threaded hole; the positioning components include: a block and a positioning screw, the block is provided with a block through hole, the block is installed in the positioning groove, and the positioning screw passes through the block through hole and is connected to the first threaded hole; the locking components include: an adjusting sleeve, a fixing bolt, and a locking nut, the adjusting sleeve is radially provided with an adjusting sleeve through hole, the outer wall is provided with an annular boss, the annular boss is provided with an adjusting thread, the locking nut is installed on the adjusting thread, the adjusting sleeve is mounted on the connecting shaft using the adjusting sleeve through hole, the fixing bolt is passed through the adjusting sleeve through hole and the connecting shaft through hole, and is fixed by the fixing nut.

2. The frame clamping mechanism according to claim 1, characterized in that: The changing fixture is provided with a plurality of fixture through holes, and the front part of the changing fixture is connected with a fixture sub-plate by utilizing the fixture through holes.

3. The frame clamping mechanism according to claim 1, characterized in that: The outer wall of the connecting shaft is provided with two positioning grooves, which are annular in shape. Two blocks on the same side are located on both sides of the first threaded hole. The changing fixture is connected with two support arms, and the blocks are located outside the support arms.

4. The frame clamping mechanism according to claim 1, characterized in that: A plurality of second threaded holes are arranged at both ends and the outer wall of the connecting shaft, and the second threaded holes are provided with mounting ears.

5. The frame clamping mechanism according to claim 1, characterized in that: A handle is arranged at the rear end of the flip pressure arm, and a plurality of force rods are arranged on the outer wall of the locking nut.

6. The frame clamping mechanism according to claim 1, characterized in that: The end of the adjusting sleeve is provided with a step end head, and the annular boss is located between the adjusting sleeve through hole and the step end head.

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