Clamping device for loader drawbar machining

Abstract

This utility model discloses a clamping device for machining a loader drawbar, including a base plate, and further comprising: a lower seat fixed to the base plate, the lower seat having a groove that engages with the lower end of a connecting arm to restrict the lateral movement of the connecting arm; side plates, with side plates arranged on both sides of the lower seat, one end of the side plate fixed to the base plate, and the other end of the side plate having a slot, and the side plate having a first threaded hole and a first guide hole; a first positioning component for longitudinally positioning the connecting arm of the drawbar, the first positioning component being threadedly connected to the first threaded hole and also slidably engaged with the first guide hole; a pressure-applying component for applying pressure to the drawbar, the pressure-applying component engaging with the slot; and a second positioning component for laterally positioning the intermediate connecting block of the drawbar, the second positioning component engaging with both the side plate and the pressure-applying component. This utility model provides stable clamping for the loader drawbar.

Description

Technical Field

[0001] This utility model relates to the field of machining technology after forging of parts, and specifically to a clamping device for machining a loader tow bar. Background Technology

[0002] The main functions of a loader drawbar include the following:

[0003] 1. Transmitting traction force: The drawbar device transmits traction force by connecting the loader's body and bogie, ensuring that the loader can move forward and backward smoothly during operation.

[0004] 2. Stabilizing the axle: In some designs, the drawbar also serves to stabilize the axle, maintaining its stable position and effectively distributing impact loads evenly, thus reducing the impact on the axle housing and chassis.

[0005] 3. Withstand various impact forces: The drawbar device can withstand various impact forces between the vehicle body and the bogie, ensuring that the loader can operate stably during operation.

[0006] 4. Achieving steering function: Since the bogie is a centerless structure, the drawbar, in conjunction with the side guards, completes the steering function of the locomotive, enabling the loader to steer flexibly.

[0007] like Figure 1 and Figure 2 As shown, the traction rod consists of a connecting arm 1 and an intermediate connecting block 2. There are two connecting arms 1, and the two ends of the intermediate connecting block 2 are respectively fixed to one of the connecting arms 1. Each connecting arm 1 is provided with a first through hole 3.

[0008] The manufacturing process of the traction rod is as follows: First, a semi-finished product is forged using forging equipment. Then, the first through hole 3 is machined on the connecting arm 1. Since the accuracy of the first through hole 3 cannot meet the requirements, it needs to be precision machined by boring to make the first through hole 3 meet the design requirements of the drawing.

[0009] During the precision boring of the traction rod, it is necessary to clamp the traction rod. Since the surface of the traction rod is mostly curved, conventional fixtures and tools are difficult to use for clamping, and the stability of the clamping is also poor, resulting in poor precision after machining. Utility Model Content

[0010] This utility model provides a clamping device for machining loader drawbars, which provides stable clamping of loader drawbars.

[0011] The technical solutions to the above technical problems are as follows:

[0012] The clamping device for machining the loader drawbar includes a base plate and also includes:

[0013] The lower seat is fixed to the base plate and has a mating groove that engages with the lower end of the connecting arm to restrict the lateral movement of the connecting arm.

[0014] Side plates are arranged on both sides of the lower seat. One end of the side plate is fixed to the bottom plate, and the other end of the side plate is provided with a slot. The side plate is provided with a first threaded hole and a first guide hole.

[0015] A first positioning component for longitudinally positioning the connecting arm of the traction rod, the first positioning component is threadedly connected to the first threaded hole, and the first positioning component is also slidably engaged with the first guide hole;

[0016] A pressure-applying component that applies pressure to the pull rod, the pressure-applying component engaging with a slot;

[0017] A second positioning component is provided for laterally positioning the middle connecting block of the traction rod. The second positioning component cooperates with the side plate and the pressure application component respectively.

[0018] In this invention, the lower seat and pad block are used to position the traction rod vertically, the lower seat and the first connecting rod are used to position the lower end of the traction rod laterally (left and right), and the positioning guide pin is used to position the traction rod longitudinally (front and back). This restricts the traction rod in multiple directions, thus enhancing the stability of the clamping device. Attached Figure Description

[0019] Figure 1 This is the front view of the loader's drawbar.

[0020] Figure 2 This is a bottom view of the loader's drawbar.

[0021] Figure 3 Front view of the clamping device machined for the loader drawbar.

[0022] Figure 4 A top view of a part of the clamping device machined for a loader drawbar.

[0023] Figure 5 This is a side view of the side panel.

[0024] Figure 6 This is a cross-sectional view of the side plate.

[0025] Figure 7 This is a top view of the second pressure plate.

[0026] Figure 8 This is a side view of the hinged hand.

[0027] Figure 9 This is a diagram showing the fit between the first connecting rod and the second hinge component.

[0028] Connecting arm 1, intermediate connecting block 2, first through hole 3.

[0029] Base plate 11, lower seat 12, connecting groove 12a, side plate 13, slot 13a, first threaded hole 13b, first guide hole 13c, first groove 13d, first notch 13e, first notch 13f, first pressure plate 14, positioning guide pin 15, bushing 15a, first bolt 16, second pressure plate 17, screw hole 17a, clearance groove 17b, clamping screw 18, pad 19, long nut 20, hinge connector 21, main body 21a, first receiving groove 21b, first mounting hole 21c, second receiving groove 21d, second mounting hole 21e, first connecting rod 22, first hinge component 23, bearing 24, second hinge component 25, second connecting rod 26, third hinge component 27, hinge bolt 28, first nut 29, front connecting plate 30, rear connecting plate 31, first fastener 32. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1 to 9 As shown, the clamping device for machining the loader drawbar of this utility model includes a base plate 11, a lower seat 12, a side plate 13, a first positioning component, a pressure application component, and a second positioning component. The following is a detailed description of each part and the relationship between them.

[0035] The lower seat 12 is fixed to the base plate 11. The lower seat 12 and the base plate 11 are preferably fixed by screws. The lower seat 12 is provided with a connecting groove 12a that cooperates with the lower end of the connecting arm 1 to restrict the lateral movement of the connecting arm 1. The connecting groove 12a is a conical groove.

[0036] Side plates 13 are arranged on the left and right sides of the lower seat 12. One end of the side plate 13 is fixed to the base plate 11. The side plate 13 and the base plate 11 are fastened by screws. The other end of the side plate 13 is provided with a slot 13a. The side plate 13 is provided with a first threaded hole 13b and a first guide hole 13c.

[0037] The first positioning component positions the connecting arm 1 of the traction rod longitudinally. The first positioning component is threadedly connected to the first threaded hole 13b and also slides with the first guide hole 13c.

[0038] The first positioning assembly includes a first pressure plate 14, positioning guide pins 15 for engaging with the inner side of the connecting arm 1, and a first bolt 16. Positioning guide pins 15 are fixed at both ends of the first pressure plate 14. The positioning guide pins 15 pass through and slide within the first guide hole 13c. The first bolt 16 passes through and engages with the first pressure plate 14. For example, the first pressure plate 14 has a through hole, and the first bolt 16 is clearance-fitted with the through hole on the first pressure plate 14. The first bolt 16 is also threaded into the first threaded hole 13b. Next, when torque is applied to the first bolt 16 to make the first bolt 16 rotate in the forward direction, the first bolt 16 generates pressure on the first pressure plate 14, causing the positioning guide pin 15 to feed into the inner side of the connecting arm 1 of the traction rod. The head of the positioning guide pin 15 is conical, and the positioning guide pin 15 engages with the inner side of the connecting arm 1 through the conical surface of the head. Since there are two positioning guide pins 15, and each positioning guide pin 15 engages with the inner side of one connecting arm 1, the positioning guide pin 15 positions the two connecting arms 1, preventing the connecting arms 1 from moving longitudinally.

[0039] Preferably, the first positioning component further includes a bushing 15a, which is inserted into the first guide hole 13c and slidably engaged with the first guide hole 13c. The bushing 15a is fixed to the side plate 13, and the positioning guide pin 15 is slidably engaged with the bushing 15a.

[0040] The pressure-applying component applies pressure to the traction rod. The pressure-applying component cooperates with the slot 13a. In this embodiment, the pressure-applying component includes a second pressure plate 17, a clamping screw 18, and a pad 19 that applies pressure to the intermediate connecting block 2 of the traction rod. The two ends of the second pressure plate 17 cooperate with the slot 13a to prevent the second pressure plate 17 from rotating. The second pressure plate 17 is provided with a screw hole 17a. The clamping screw 18 is threadedly connected to the screw hole 17a and passes through the screw hole 17a. The clamping screw 18 is pivotally connected to the pad 19.

[0041] When a positive torque is applied to the clamping screw 18, the clamping screw 18 drives the pad 19 to feed towards the traction rod supported on the lower seat 12, and the pad 19 applies pressure to the intermediate connecting block 2 of the traction rod. When a reverse torque is applied to the clamping screw 18, the clamping screw 18 drives the pad 19 away from the traction rod, thereby releasing the pressure on the intermediate connecting block 2.

[0042] The pressure-applying assembly also includes a long nut 20, which is threadedly connected to the screw hole 17a of the second pressure plate 17. A clamping screw 18 is threadedly connected to the long nut 20 and passes through it. The long nut 20 protects the screw hole 17a, preventing damage from frequent operation. When the long nut 20 is damaged, it can be replaced, which is less costly than replacing the second pressure plate 17.

[0043] The second positioning component positions the middle connecting block 2 of the traction rod laterally, and the second positioning component cooperates with the side plate 13 and the pressure application component respectively.

[0044] The second positioning assembly includes a hinged hand 21, a first connecting rod 22, a first hinged component 23, a bearing 24, a second hinged component 25, a second connecting rod 26, a third hinged component 27, a hinge bolt 28, and a first nut 29. The side plate 13 is provided with a first groove 13d located below the slot 13a. The hinged hand 21 engages with the slot 13a and the first groove 13d respectively. The first hinged component 23 passes through the first connecting rod 22 and the bearing 24. The first hinged component 23 is connected to one end of the hinged hand 21. The bearing 24 rolls with the groove wall of the first groove 13d. The first connecting rod 22 is connected to the second hinged component 25. One end of the second connecting rod 26 is hinged to the second hinged component 25. The other end of the second connecting rod 26 is hinged to the third hinged component 27. The third hinged component 27 passes through the other end of the hinged hand 21 and one end of the hinge bolt 28. The other end of the hinge bolt 28 passes through the pressure application assembly and is connected to the first nut 29. Both ends of the second pressure plate 17 are provided with relief grooves 17b for the second positioning component to pass through. The other end of the hinge bolt 28 passes through the relief grooves 17b, which are U-shaped.

[0045] The hinge connector 21 includes a main body 21a. One end of the main body 21a has a first receiving groove 21b, and the bearing 24 mates with the first receiving groove 21b. Another end of the main body 21a also has a first mounting hole 21c, and a first hinge component 23 mates with the first mounting hole 21c. The other end of the main body 21a has a second receiving groove 21d, and one end of the hinge bolt 28 mates with the second receiving groove 21d. Another end of the main body 21a also has a second mounting hole 21e, and a third hinge component 27 mates with the second mounting hole 21e. The first hinge component 23, the second hinge component 25, and the third hinge component 27 can be composed of bolts and nuts, or they can be pins.

[0046] This embodiment also includes a front connecting plate 30, a rear connecting plate 31, a first fastener 32, and a second fastener. A first notch 13e is provided at the front of the other end of the side plate 13, and a first notch 13f is provided at the rear of the other end of the side plate 13. A slot 13a is located between the first notch 13e and the first notch 13f. After the front connecting plate 30 engages with the first notch 13e, the front connecting plate 30 is fixed to the side plate 13 by the first fastener 32. After the rear connecting plate 31 engages with the second notch 13f, the rear connecting plate 30 is fixed to the side plate 13 by the second fastener. Connecting the two side plates via the front connecting plate 30 and the rear connecting plate 31 increases the strength of the clamping device.

[0047] The usage process of this utility model is as follows:

[0048] S1, the lower end of the connecting arm 1 of the traction rod is placed into the connecting groove 12a, and the lower seat 12 provides support for the lower end of the connecting arm 1.

[0049] S2, when torque is applied to the first bolt 16 to make the first bolt 16 rotate in the forward direction, the first bolt 16 exerts pressure on the first pressure plate 14, causing the positioning guide pin 15 to advance towards the inner side of the connecting arm 1 of the traction rod. The positioning guide pin 15 engages with the inner side of the connecting arm 1 through the conical surface of its head, and the two connecting arms 1 are positioned by the positioning guide pin 15, so that the connecting arm 1 cannot move longitudinally.

[0050] S3, apply a positive torque to the clamping screw 18. The clamping screw 18 drives the pad 19 to feed towards the traction rod supported on the lower seat 12. The pad 19 applies pressure to the intermediate connecting block 2 of the traction rod. While the screw 18 rotates in the forward direction, the second pressure plate 17 moves in the opposite direction to the movement of the pad 19. That is, when the pad 19 moves downward, the second pressure plate 17 moves upward in a straight line. Since the first nut 29 abuts against the upper end surface of the second pressure plate 17, when the second pressure plate 17 moves upward, the second pressure plate 17 generates an upward driving force on the first nut 29, causing the first nut 29 to drive the hinge bolt 28 to move upward. The power of the hinge bolt 28 is transmitted to the second connecting rod 26 through the third hinge component 27. The power of the second connecting rod 26 is transmitted to the first connecting rod 22 through the second hinge component 25. This causes the second connecting rod 26 and the first connecting rod 22 to swing, and the first connecting rod 22 abuts against the side wall surface of the intermediate connecting block 2.

[0051] In this invention, the lower seat 12 and the pad 19 are used to position the traction rod vertically, the lower seat 12 and the first connecting rod 22 are used to position the lower end of the traction rod horizontally (left and right), and the positioning guide pin 15 is used to position the traction rod longitudinally (front and back). Therefore, the clamping device of this invention enhances the stability of clamping the traction rod.

Claims

1. A clamping device for machining a loader drawbar, comprising a base plate (11), characterized in that, Also includes: The lower seat (12) is fixed to the base plate (11). The lower seat (12) is provided with a connecting groove (12a) that cooperates with the lower end of the connecting arm (1) to restrict the lateral movement of the connecting arm (1). Side plate (13): Side plates (13) are arranged on both sides of the lower seat (12). One end of the side plate (13) is fixed to the bottom plate (11), and the other end of the side plate (13) is provided with a slot (13a). The side plate (13) is provided with a first threaded hole (13b) and a first guide hole (13c). A first positioning component for longitudinally positioning the connecting arm (1) of the traction rod, the first positioning component is threadedly connected to the first threaded hole (13b), and the first positioning component is also slidably engaged with the first guide hole (13c); A pressure-applying assembly that applies pressure to the traction rod, the pressure-applying assembly engaging with a slot (13a); A second positioning component is formed laterally to position the middle connecting block (2) of the traction rod. The second positioning component cooperates with the side plate (13) and the pressure application component respectively.

2. The clamping device for machining the loader drawbar according to claim 1, characterized in that, The first positioning assembly includes a first pressure plate (14), a positioning guide pin (15) for engaging with the inner side of the connecting arm (1), and a first bolt (16). The positioning guide pin (15) is fixed at both ends of the first pressure plate (14). The positioning guide pin (15) passes through the first guide hole (13c) and is slidably engaged with the first guide hole (13c). The first bolt (16) passes through the first pressure plate (14) and engages with the first pressure plate (14). The first bolt (16) is also threadedly connected to the first threaded hole (13b).

3. The clamping device for machining the loader drawbar according to claim 1, characterized in that, The pressure application assembly includes a second pressure plate (17), a clamping screw (18), and a pad (19) that applies pressure to the intermediate connecting block (2) of the traction rod. The two ends of the second pressure plate (17) are respectively engaged with the slot (13a). The second pressure plate (17) is provided with a screw hole (17a). The clamping screw (18) is threadedly connected to the screw hole (17a) and passes through the screw hole (17a). The clamping screw (18) is pivotally connected to the pad (19).

4. The clamping device for machining the loader drawbar according to claim 3, characterized in that, The pressure assembly also includes a long nut (20), which is threaded to the screw hole (17a) of the second pressure plate (17), and a clamping screw (18) is threaded to the long nut (20) and passes through the long nut (20).

5. The clamping device for machining a loader drawbar according to claim 3, characterized in that, Both ends of the second pressure plate (17) are provided with relief grooves (17b) for the second positioning component to pass through, and the relief grooves (17b) are U-shaped.

6. The clamping device for machining a loader drawbar according to claim 1, characterized in that, The second positioning assembly includes a hinged connector (21), a first connecting rod (22), a first hinge component (23), a bearing (24), a second hinge component (25), a second connecting rod (26), a third hinge component (27), a hinge bolt (28), and a first nut (29). The side plate (13) has a first groove (13d) located below the slot (13a). The hinged connector (21) engages with both the slot (13a) and the first groove (13d). The first hinge component (23) passes through the first connecting rod (22) and the bearing (24). The hinge component (23) is connected to one end of the hinge connector (21), the bearing (24) is in rolling engagement with the groove wall of the first groove (13d), the first connecting rod (22) is connected to the second hinge component (25), one end of the second connecting rod (26) is hinged to the second hinge component (25), the other end of the second connecting rod (26) is hinged to the third hinge component (27), the third hinge component (27) passes through the other end of the hinge connector (21) and one end of the hinge bolt (28), the other end of the hinge bolt (28) passes through the pressure assembly and is connected to the first nut (29).

7. The clamping device for machining a loader drawbar according to claim 6, characterized in that, The hinge connector (21) includes a main body (21a), one end of which is provided with a first receiving groove (21b), the bearing (24) cooperates with the first receiving groove (21b), and one end of the main body (21a) is also provided with a first mounting hole (21c) for mounting the first hinge component (23). The other end of the main body (21a) is provided with a second receiving groove (21d), one end of the hinge bolt (28) is engaged with the second receiving groove (21d), and one end of the main body (21a) is also provided with a second mounting hole (21e) for installing the third hinge component (27).

8. The clamping device for machining a loader drawbar according to any one of claims 1-7, characterized in that, It also includes a front connecting plate (30), a rear connecting plate (31), a first fastener (32), and a second fastener. The front part of the other end of the side plate (13) is provided with a first notch (13e), and the rear part of the other end of the side plate (13) is provided with a second notch (13f). After the front connecting plate (30) and the first notch (13e) are engaged, the front connecting plate (30) and the side plate (13) are fixed by the first fastener (32). After the rear connecting plate (31) and the second notch (13f) are engaged, the rear connecting plate (31) and the side plate (13) are fixed by the second fastener.

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