Hydraulic clamping device for lifting plate and control lever fulcrum

Abstract

The utility model relates to the field of machining, in particular to a hydraulic clamping device for a lifting plate and a control lever fulcrum. The problems that when an existing force rubbing vehicle hoisting plate and a C70E vehicle control lever fulcrum are machined, manual clamping is adopted, the efficiency is low, and the labor intensity is large are mainly solved. The hydraulic clamping device comprises a bottom plate (1), an inclined top plate (2) is fixed on the bottom plate (1), two upper positioning blocks (5) and two lower positioning blocks (3) are fixed on the top plate (2), and the lower positioning blocks (3) are connected with positioning bolts (9); two oil cylinders (11) are respectively arranged below the top plate (2), the oil cylinders (11) are connected with a pressing plate (4) through connecting shafts (7), and the pressing plate (4) is located above the top plate (2). The hydraulic clamping device can be simultaneously applied to clamping of a hoisting plate and a control lever fulcrum, the labor intensity of workers is reduced, the production auxiliary time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of machining, and specifically relates to a hydraulic clamping device for a hoisting plate and a control lever fulcrum. Background Art

[0002] The hoisting plate is an important part of the middle beam of the Rio Tinto ore car, and plays a crucial role in ensuring the normal operation of the vehicle. The hoisting plate is made from sheet metal blanking, and can be put into use only after processes such as leveling, milling the surface, and grinding. The control lever fulcrum is an important part of the accessories of the C70E car body frame, and plays a crucial role in ensuring the normal operation of the vehicle. The control lever fulcrum is made from sheet metal blanking, and can be put into use only after processes such as leveling, bending, milling slots, milling the surface, and grinding.

[0003] At present, for the milling processes of the hoisting plate and the control lever fulcrum, all rely on manual clamping, using two-point pressing. Each working cycle requires clamping twice, resulting in a relatively high labor intensity for workers and a low working efficiency; moreover, the machining angle of the control lever fulcrum cannot be guaranteed, and normal production tasks cannot be completed. Summary of the Invention

[0004] In order to overcome the deficiencies of low efficiency and high labor intensity in the manual clamping during the machining of the hoisting plate of the Rio Tinto car and the control lever fulcrum of the C70E car, the utility model provides a hydraulic clamping device for a hoisting plate and a control lever fulcrum. This hydraulic clamping device can be applied to the clamping of both the hoisting plate and the control lever fulcrum, reducing the labor intensity of workers, shortening the production auxiliary time, and improving the production efficiency.

[0005] The technical solution of the utility model is: a hydraulic clamping device for a hoisting plate and a control lever fulcrum, including a bottom plate. An inclined top plate is fixed on the bottom plate. Two upper positioning blocks and two lower positioning blocks are fixed on the top plate. A positioning bolt is connected to the lower positioning block; below the top plate, two oil cylinders are respectively provided. A pressing plate is connected to the oil cylinder through a connecting shaft, and the pressing plate is located above the top plate.

[0006] Further, several side plates are welded between the top plate and the bottom plate. There are at least two side plates, which are respectively located on the left and right sides of the top plate.

[0007] Further, the upper positioning blocks are fixed at the top of the upper surface of the top plate. The two upper positioning blocks are respectively located on both sides, and are used for positioning the left and right sides of the workpiece.

[0008] Further, the two pressing plates are located on the left and right sides of the upper surface of the top plate, and are used for pressing the workpiece.

[0009] Further, the lower positioning block includes an upper plate of the lower positioning block and a lower plate of the lower positioning block. The upper plate of the lower positioning block is fixed on the upper surface of the top plate, and the lower plate of the lower positioning block is fixed on the lower surface of the top plate. The upper plate of the lower positioning block is connected with an upper positioning bolt, and the lower plate of the lower positioning block is connected with a lower positioning bolt.

[0010] Further, the upper plate of the lower positioning block and the lower plate of the lower positioning block are respectively perpendicular to the upper and lower surfaces of the top plate, and both the upper positioning bolt and the lower positioning bolt are parallel to the surface of the top plate.

[0011] Further, a transverse through groove is formed in the top plate above the lower positioning block for the workpiece to pass through.

[0012] The utility model has the following beneficial effects: Due to the adoption of the above scheme, the hydraulic clamping device can be used for processing two different vehicle types and different products, namely the hoisting plate of the force expansion vehicle and the fulcrum of the control lever of the C70E vehicle, effectively solving the production efficiency problem of the milling processing procedures of the two products, saving the manufacturing cost of the tooling. At the same time, manual clamping is avoided, greatly reducing the labor intensity of workers and shortening the production auxiliary time. And the use of the hydraulic device makes the chamfering processing operation stable and reliable, improving the consistency of products and greatly enhancing the product quality. In actual production, the daily output per shift is increased from 60 pieces to 200 pieces, and the efficiency is three times that of the original, and the product quality is more guaranteed. Description of the Drawings

[0013] Figure 1 is the front view of the utility model;

[0014] Figure 2 is the left view of the utility model when processing the hoisting plate;

[0015] Figure 3 is the left view of the utility model when processing the fulcrum of the control lever.

[0016] In the figure, 1 - bottom plate, 2 - top plate, 3 - lower positioning block, 4 - pressing plate, 5 - upper positioning block, 6 - side plate, 7 - oil cylinder connecting shaft, 8 - pressing plate clamping nut, 9 - positioning bolt, 10 - positioning nut, 11 - oil cylinder, 12 - through groove, 13 - workpiece, 31 - upper plate of the lower positioning block, 32 - lower plate of the lower positioning block. Detailed Description of the Preferred Embodiment

[0017] The following will describe the present utility model in detail with reference to the drawings and embodiments. The technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it is necessary to understand that the orientation or positional relationship indicated by "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. The purpose is only to facilitate the description of the present utility model and simplify the description, rather than indicating or implying that the component to be referred must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0019] As shown by Figures 1 to 3 a hydraulic clamping device for a hoisting plate and a control lever fulcrum includes a bottom plate 1. A through hole is machined on the bottom plate 1, which can be used to clamp the bottom plate on a milling machine. An inclined top plate 2 is fixed on the bottom plate 1. The top plate 2 forms a certain angle with the bottom plate 1. Preferably, the included angle between the two is 45 degrees. To ensure the stability of the top plate 2, the bottom plate 1 and the top plate 2 are connected by a plurality of side plates 6. There are at least 2 side plates 6, one on each of the left and right sides of the top plate 2. The side plates 6 are triangular or trapezoidal, and the bottom edge and one side edge are respectively welded to the bottom plate 1 and the top plate 2. There can also be 3 side plates 6, which are respectively located on the left and right sides and in the middle of the top plate 2, which does not affect the processing of the workpiece 13. To enable the hydraulic clamping device to process two workpieces, namely the hoisting plate of a force-ripping vehicle and the control lever fulcrum of a C70E vehicle, a transverse through groove 12 is opened on the top plate 2. The through groove 12 is located above the lower positioning block 3 and is used for the control lever fulcrum to pass through. When there are 3 side plates 6, the through groove 12 can be divided into left and right two, and the side plates 6 are located between the two through grooves 12. Since the control lever fulcrum is L-shaped, when processing the control lever fulcrum, one side of its L shape can pass through the through groove 12 to the lower part of the top plate 2, so that the upper side edge of the control lever fulcrum is parallel to the top plate 2 as a whole.

[0020] Two upper positioning blocks 5 and two lower positioning blocks 3 are fixed on the top plate 2. The upper positioning blocks 5 and the lower positioning blocks 3 are welded to the top plate 2 after their positions are determined in advance. The upper positioning blocks 5 are fixed at the top of the upper surface of the top plate 2, and the upper edge of the upper positioning blocks 5 is flush with the upper edge of the top plate 2. The two upper positioning blocks 5 are respectively located on both sides of the top plate 2 and are symmetric about the center of the top plate 2 from left to right, and are used for positioning the left and right sides of the workpiece 13.

[0021] The lower positioning block 3 is connected with a positioning bolt 9, and a positioning nut 10 is connected to one side of the positioning bolt 9 below the upper and lower positioning blocks 3. By rotating the positioning nut 10, the positioning bolt 9 is extended upward, thereby supporting the workpiece 13 and limiting the position of the workpiece 13. The lower positioning block 3 includes a lower positioning block upper plate 31 and a lower positioning block lower plate 32, wherein the lower positioning block upper plate 31 is fixed on the upper surface of the top plate 2, and the lower positioning block lower plate 32 is fixed on the lower surface of the top plate 2. The lower positioning block upper plate 31 is connected with an upper positioning bolt, and the lower positioning block lower plate 32 is connected with a lower positioning bolt. The lower positioning block upper plate 31 and the lower positioning block lower plate 32 are respectively perpendicular to the upper and lower surfaces of the top plate 2, and the upper positioning bolt and the lower positioning bolt are parallel to the surface of the top plate 2. A nut is connected to each of the upper positioning bolt and the lower positioning bolt, and the bolt extension length is also adjusted by rotating the nut to limit the position below the workpiece 13. When processing the hanging plate, the hanging plate is placed above the top plate 2. At this time, the lower positioning block upper plate 31 is used to limit the hanging plate through the upper positioning bolts. When processing the control lever fulcrum, the lower positioning block lower plate 32 is used. One side of the L-shaped control lever fulcrum passes through the through groove 12 to the bottom of the top plate 2. The lower positioning bolts are pressed against the side of the L-shaped to limit the control lever fulcrum.

[0022] Two oil cylinders 11 are provided below the top plate 2. The two oil cylinders 11 are located on the left and right sides of the top plate 2, respectively. The oil cylinders 11 are connected to the pressing plate 4 through the connecting shaft 7, and the pressing plate 4 is located above the top plate 2. The two pressing plates 4 are located on the left and right sides of the top plate 2, respectively, and are used to clamp the workpiece 13. The pressing plate 4 can rotate around the connecting shaft 7. When clamping or removing the workpiece 13, the pressing plate can be rotated 490 degrees to avoid the workpiece 13; when clamping is required, the pressing plate 4 is turned back to the top of the workpiece. When the workpiece 13 is placed on the top plate 2, the oil cylinder 11 is started to clamp the pressing plate 4 through the connecting shaft 7, thereby clamping the workpiece 13. The oil cylinder 11 is located below the top plate 2. On the one hand, it is used to clamp the workpiece, and at the same time, it can also save space.

[0023] When machining the hanging plate, first install the hydraulic clamping device on the milling machine, rotate the pressing plate 4 90 degrees, make way for the middle part of the top plate 2, and place the hanging plate on the top plate 2 between the two upper positioning blocks 5, as shown in the figure. Figure 2 As shown, the lifting plate is made horizontal by adjusting the extension length of the two upper positioning bolts; the pressing plate 4 is turned back to its original position, the oil cylinder 11 is started, and the pressing plate 4 is pulled to press the lifting plate for processing; after the processing is completed, the oil cylinder is released to remove the lifting plate.

[0024] When machining the control lever fulcrum, the hydraulic clamping device is also first installed on the milling machine, the pressing plate 4 is rotated 90 degrees to make way for the middle part of the top plate 2, the control lever fulcrum is placed on the top plate 2, between the two upper positioning blocks 5, and the lower side of the control lever fulcrum passes through the through groove 12 to the bottom of the top plate 2, such as Figure 3As shown, ensure that the side above the fulcrum of the control lever is parallel to the top plate 2; adjust the protruding lengths of the two lower positioning bolts to make the fulcrum of the control lever horizontal; turn the pressure plate 4 back to its original position, start the oil cylinder 11, pull the pressure plate 4 to press the lifting plate, and then processing can be carried out.

[0025] This hydraulic clamping device can be used for the processing of two products, namely, the lifting plate of the Lituo vehicle and the fulcrum of the control lever of the C70E vehicle. It effectively solves the production efficiency problem in the milling processing procedures of the two products. While saving manufacturing costs, it avoids manual clamping, greatly reduces the labor intensity of workers, and shortens the production auxiliary time. Moreover, the use of the hydraulic device makes the chamfering processing operation stable and reliable, improves the consistency of products, and greatly enhances the product quality. In actual production, the daily output per shift has increased from 60 pieces to 200 pieces, and the efficiency is three times that of the original, and the product quality is more guaranteed.

[0026] The embodiments of the present invention have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical applications, or the improvements to the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the embodiments disclosed herein.

Claims

1. A hydraulic clamping device for a lifting plate and a control lever fulcrum, comprising a base plate (1), characterized in that: A top plate (2) is fixed on the bottom plate (1) and is placed obliquely. Two upper positioning blocks (5) and two lower positioning blocks (3) are fixed on the top plate (2). Positioning bolts (9) are connected to the lower positioning blocks (3). Two oil cylinders (11) are respectively provided below the top plate (2). The oil cylinders (11) are connected to a pressure plate (4) via a connecting shaft (7). The pressure plate (4) is located above the top plate (2).

2. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 1, characterized in that: A plurality of side plates (6) are welded between the top plate (2) and the bottom plate (1), and there are at least two side plates (6), which are respectively located on the left and right sides of the top plate (2).

3. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 2, characterized in that: The upper positioning block (5) is fixed to the top of the upper surface of the top plate (2), and the two upper positioning blocks (5) are respectively located on both sides and are used to position the left and right sides of the workpiece (13).

4. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 3, characterized in that: The two pressing plates (4) are located on the left and right sides of the upper surface of the top plate (2) and are used to press the workpiece (13).

5. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 4, characterized in that: The lower positioning block (3) comprises a lower positioning block upper plate (31) and a lower positioning block lower plate (32), wherein the lower positioning block upper plate (31) is fixed to the upper surface of the top plate (2), and the lower positioning block lower plate (32) is fixed to the lower surface of the top plate (2); the lower positioning block upper plate (31) is connected to an upper positioning bolt, and the lower positioning block lower plate (32) is connected to a lower positioning bolt.

6. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 5, characterized in that: The lower positioning block upper plate (31) and the lower positioning block lower plate (32) are respectively perpendicular to the upper and lower surfaces of the top plate (2), and the upper positioning bolts and the lower positioning bolts are parallel to the surface of the top plate (2).

7. The hydraulic clamping device for hoisting plates and controlling lever fulcrums according to claim 5, characterized in that: The top plate (2) is provided with a transverse through slot (12), which is located above the lower positioning block (3) and is used for a workpiece (13) to pass through.

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