Positioning inner supporting mechanism at front end of front axle plate

Abstract

The utility model belongs to the technical field of forklift assembly, and particularly discloses a front axle plate front end positioning inner supporting mechanism which comprises a clamping device, the clamping device comprises a set of positioning headstock used for clamping the front end of a left front axle plate and the front end of a right front axle plate, the inner supporting mechanism further comprises an inner supporting device, and the inner supporting device comprises a connecting support fixedly connected with the clamping device. An inner supporting lead screw is rotationally connected into the connecting support, inner supporting pieces are in threaded connection with the two ends of the inner supporting lead screw respectively, the inner supporting lead screw is rotated to enable the two inner supporting pieces to move face to face or back to back, and the inner supporting pieces located at the same end and the positioning head frame conduct inner and outer clamping positioning on the front end of a front axle plate together. The positioning headstock on the clamping device is located on the outer sides of the front ends of the left front axle plate and the right front axle plate for clamping, and the inner supporting piece of the inner supporting device is located on the inner sides of the front ends of the left front axle plate and the right front axle plate, so that the outer side and the inner side of the front axle plate are clamped and positioned at the same time, deformation of the front axle plate during welding is prevented, correction after welding is avoided, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of forklift assembly technology, specifically relating to a positioning inner support mechanism at the front end of the front axle plate of a forklift frame. Background Technology

[0002] The forklift frame is a box-type structure, welded from steel plates, and mainly includes left and right front axle plates, reinforcing plates, outriggers, and chassis components. The front end of the forklift frame is rigidly fixed to the drive axle, and the rear end is connected to the steering axle via a hinge shaft. The outriggers are welded to the chassis to form an integral frame. Before welding and assembly, the front axle plates need to be positioned and then welded to the chassis or outrigger components of the frame.

[0003] The current clamping method involves fixing the head and tail sections of the forklift frame to the head and tail positioning fixtures of the positioner, respectively. Currently, the front axle plate is positioned using a clamping device, the structure of which is as follows: Figure 1 As shown, the clamping device 1 includes a base 11, two positioning head frames 12 symmetrically slidably mounted on the base 11, and positioning shafts 13 fixedly mounted on the positioning head frames. During positioning, the arc-shaped surfaces of the left and right front axle plates 2 are clamped onto the corresponding positioning shafts 13, and then the two positioning head frames 12 move towards the center to clamp the front axle plates. However, in this positioning method, because there is no effective limiting on the inner side of the front axle plates, the left and right front axle plates will show an inward deformation tendency after the forklift frame is welded, resulting in errors in the connection with the drive axle. Therefore, the front axle plates still need to be manually corrected after welding.

[0004] This application designs a special tooling mechanism that can be integrated into the existing positioner head tooling. It can quickly and effectively achieve the internal support function of the left and right front axle plates of the frame, prevent the front axle plates from deforming inward during welding, avoid post-weld correction, and reduce labor intensity. Utility Model Content

[0005] To address the aforementioned problem of front axle plate deformation, this invention provides a positioning inner support mechanism for the front end of the front axle plate. This mechanism can quickly and effectively limit the front axle plate's outer and inner sides simultaneously, preventing deformation during welding, avoiding post-weld correction, and reducing labor intensity.

[0006] The specific technical solution of this utility model is as follows:

[0007] A positioning inner support mechanism for the front end of a front axle plate includes a clamping device. The clamping device includes a set of positioning head frames for clamping the front ends of the left and right front axle plates. It also includes an inner support device. The inner support device includes a connecting support fixedly connected to the clamping device. An inner support screw is rotatably connected to the connecting support. The two ends of the inner support screw are respectively threaded with inner support members. Rotating the inner support screw causes the two inner support members to move towards or away from each other. The inner support members located at the same end, together with the positioning head frames, clamp and position the front end of a front axle plate from both inside and outside.

[0008] In a further embodiment, the connecting support includes a mounting base with a through hole, the inner support screw is mounted in the through hole via a bearing and can rotate freely within the through hole; two connecting arms in a V-shape are mounted on the mounting base, and a connecting plate fixedly connected to the clamping device is fixedly provided at the end of the connecting arms.

[0009] A further improvement involves installing a limiting device on the inner support screw located in the through hole to prevent the inner support screw from moving axially.

[0010] Preferably, the limiting member includes a spacer and a locking nut, wherein the spacer is located between the locking nut and the bearing.

[0011] In a further embodiment, the inner support member is equipped with an anti-rotation guide rod to prevent it from rotating.

[0012] In a further embodiment, the anti-rotation guide rod is arranged parallel to the inner support screw, with one end of the anti-rotation guide rod inserted into the inner support member and the other end inserted into the guide rod fixing piece installed on the connecting support.

[0013] In a further embodiment, a handle is installed at one end of the inner support screw for rotating the inner support screw.

[0014] In a further embodiment, the inner support screw includes a support mounting section connected to the connecting support. At both ends of the support mounting section, there are stepped bearing mounting sections and limiting sections, respectively. An inner support mounting section is provided on the outside of the limiting section. Both inner support mounting sections are provided with external threads in opposite directions.

[0015] In a further embodiment, the inner support member has an internal threaded hole at its center that mates with the inner support screw, and the inner support member also has a guide rod hole for the anti-rotation guide rod to pass through.

[0016] The positioning head frame of the clamping device of this utility model is located on the outer side of the front end of the left and right front axle plates for clamping, and the inner support member of the inner support device is located on the inner side of the front end of the left and right front axle plates. By rotating the inner support screw, the two inner support members move to both sides at the same time, and together with the positioning head frame located at the same end, they clamp and position the front end of a front axle plate from the inside and outside.

[0017] The beneficial effects of this utility model are:

[0018] This utility model connects an inner support device to a clamping device. The positioning head frame on the clamping device is located on the outer side of the front end of the left and right front axle plates for clamping, and the inner support component of the inner support device is located on the inner side of the front end of the left and right front axle plates. This allows for simultaneous clamping and positioning of the front axle plates from both the outside and inside, preventing deformation of the front axle plates during welding, avoiding post-weld correction, and reducing labor intensity.

[0019] By rotating the inner support screw with the handle, the two inner support components can be moved towards or away from each other, which facilitates operation; and the left and right front axle plates can be clamped and positioned simultaneously.

[0020] This utility model effectively utilizes the structural space of the clamping device, and the inner support device is installed on the clamping device, resulting in a small overall positioning and support mechanism. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram showing the positioning of the clamping device and the front end of the front axle plate.

[0023] Figure 2 This is a schematic diagram of the positioning inner support mechanism of this utility model.

[0024] Figure 3 This is a schematic diagram of the internal support mechanism in this utility model.

[0025] Figure 4 for Figure 3 sectional view,

[0026] Figure 5 This is a schematic diagram of the V-shaped support in this utility model.

[0027] Figure 6 This is a schematic diagram of the internal support screw in this utility model.

[0028] Figure 7 This is a structural schematic diagram of the inner support member in this utility model.

[0029] Figure 8 This is a schematic diagram showing the positioning of the internal support mechanism and the front end of the front axle plate of this utility model.

[0030] In the figure: clamping device 1, base 11, positioning head frame 12, positioning shaft 13, connecting seat 14;

[0031] Internal support device 2, connecting support 21, mounting base 211, connecting arm 212, connecting plate 213,

[0032] Internal support screw 22, handle mounting shaft 221, internal support component mounting section 222, bearing mounting section 223, limit section 224, support mounting section 225.

[0033] Inner support component 23, internal threaded hole 231, guide rod hole 232,

[0034] 24. Guide rod fixing plate, 25. Anti-rotation guide rod, 26. Spacer, 27. Locking nut, 28. Bearing, 29. Handle;

[0035] Front axle 3. Detailed Implementation

[0036] The present application will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present application can be combined with each other.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "fixed installation," 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, an electrical connection, or a communication 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] See Figure 1-8 This embodiment provides a positioning inner support mechanism for the front end of a front axle plate, including a clamping device 1. The clamping device 1 includes a base 11, on which a set of positioning head frames 12 for clamping the front ends of the left and right front axle plates are movably connected. The inner sidewall of the positioning head frame 12 is fixed with a positioning shaft 13 that engages with the arc-shaped surface of the front end of the front axle plate 3. A connecting seat 14 extends from the base 11. Specifically, the base plates of the two positioning head frames 12 are symmetrically mounted on the base via slide rails and can move along the base. After moving into position, they can be fixed to the base using bolts. During positioning, the arc-shaped surfaces of the front ends of the left and right front axle plates 3 are engaged with the corresponding positioning shafts 13, and then the two positioning head frames 12 are moved towards the center, thereby clamping the front ends of the two front axle plates 3.

[0039] It also includes an internal support device 2, which includes a connecting support 21 fixedly connected to the clamping device 1. An internal support screw 22 is rotatably connected to the connecting support 21. Internal support members 23 are threaded to both ends of the internal support screw 22. Rotating the internal support screw 22 causes the two internal support members 23 to move towards or away from each other. The internal support members 23 located at the same end, together with the positioning head frame 12, clamp and position the front end of a front axle plate from both inside and outside. That is, the two positioning head frames 12 are located on the outer side of the front ends of the two front axle plates 3, applying force towards the middle for clamping. The internal support members 23 are located on the inner side of the front ends of the two front axle plates 3. Rotating the internal support screw 22 causes the two internal support members 23 to move away from each other, applying force towards the front axle plate 3, thereby applying force towards the positioning head frame 12 to clamp and position the front axle plate 3. This also prevents deformation of the front axle plate during welding, avoids post-weld correction, and reduces labor intensity.

[0040] like Figure 3-5 As shown, the connecting support 21 includes a mounting base 211 with a through hole. The inner support screw 22 is mounted in the through hole via a bearing 28 and rotates freely within the through hole. The bearing 28 can be a deep groove ball bearing to improve the smoothness of the rotation of the inner support screw, thereby facilitating rotation operation. Two connecting arms 212 with a V-shaped structure are mounted on the mounting base 211. The ends of the connecting arms 212 are fixedly provided with connecting plates 213 that are fixedly connected to the clamping device 1. The V-shaped structure of the two connecting arms 212 facilitates the fixed connection of both connecting plates 213 to the connecting seats 14 extending from the base 11, which can be achieved using bolts.

[0041] In another embodiment, a limiting member is installed on the inner support screw 22 located in the through hole to prevent the inner support screw from moving axially.

[0042] Preferably, the limiting components are two symmetrically arranged at both ends of the through hole. Each limiting component includes a spacer 26 and a locking nut 27. The spacer 26 is located between the locking nut 27 and the bearing 28. The spacer 26 is fitted onto the inner support screw, and the locking nut 27 is fixed to the inner support screw. When the inner support screw rotates, it rotates together with the inner ring of the bearing 28 within the outer ring of the bearing, simultaneously causing the locking nut 27 to rotate as well. The locking nut 27, through the spacer 26, provides relative positioning to the outer ring of the bearing, thereby preventing axial movement of the inner support screw.

[0043] In another embodiment, an anti-rotation guide rod 25 is installed on the inner support member 23 to prevent it from rotating. The anti-rotation guide rod 25 is arranged parallel to the inner support screw, with one end inserted into the inner support member 23 and the other end inserted into a guide rod fixing piece 24 installed on the connecting support 21. The guide rod fixing piece 24 is fixedly installed on the mounting base 211 by bolts. Since the guide rod fixing piece 24 is fixed, the inner support member connected by the anti-rotation guide rod 25 is also stationary in the circumferential direction, thus preventing its circumferential rotation. However, the anti-rotation guide rod 25 and the inner support member 23 are movably inserted, so the inner support member 23 can move along the anti-rotation guide rod 25, meaning the anti-rotation guide rod 25 also serves as a guide.

[0044] In a further embodiment, a handle 29 is installed at one end of the inner support screw 22 for rotating the inner support screw 22. When it is necessary to adjust the distance between the two inner support members, the inner support screw can be rotated by the handle 29.

[0045] like Figure 6 As shown, the inner support screw 22 includes a support mounting section 225 connected to the connecting support 21. Stepped bearing mounting sections 223 and limiting sections 224 are respectively located at both ends of the support mounting section 225. An inner support mounting section 222 is located outside the limiting section 224. Both inner support mounting sections 222 have external threads with opposite thread directions. A handle mounting shaft 221 is fixed to one end of the inner support screw 22 for connection to the handle 29.

[0046] During assembly, first install bearings 28 on the two bearing mounting sections 223 of the inner support screw 22, and then insert them into the through holes on the mounting base 211. Next, install spacers 26 and lock nuts 27 on the limiting sections 224 on the outer side of the bearings to limit the axial movement of the inner support screw. Then, thread the two inner support components 23 onto the two inner support component mounting sections 222.

[0047] like Figure 7 As shown, the shape of the inner support member 23 in this utility model is not limited and can be circular, square, or irregular in shape. In this embodiment, a circular structure can be selected to facilitate support of the inner side of the front axle plate. The center of the inner support member 23 is provided with an internal threaded hole 231 that mates with the inner support screw 22, and the inner support member 23 is also provided with a guide rod hole 232 for the anti-rotation guide rod 25 to pass through.

[0048] like Figure 8This diagram illustrates the positioning mechanism of the present invention for positioning the front end of the front axle plate. First, the handle 29 is rotated in a certain direction, causing the left and right inner support members 23 to move towards the center, releasing clamping space. Then, the arc-shaped surfaces of the front ends of the left and right front axle plates 3 are clamped onto the corresponding positioning shafts 13 of the clamping device 1. Next, the two positioning head frames 12 are moved towards the center, thereby clamping the front ends of the two front axle plates 3 and fixing the positioning head frames 12 to the base 11. Finally, the handle 29 is rotated in the opposite direction, causing the inner support members 23 to move outwards, thereby pressing against the inner wall of the front axle plate, i.e., applying force in opposite directions to the positioning head frames 12 to clamp and position the front axle plate 3. This prevents deformation of the front axle plate during welding, avoids post-weld correction, and reduces labor intensity.

[0049] After welding is completed, turn the handle again to loosen the inner support, then loosen the fixing bolts of the positioning head frame 12 to loosen the positioning head frame 12 and complete the dismantling work.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A positioning inner support mechanism for the front end of a front axle plate, comprising a clamping device (1), wherein the clamping device (1) comprises a set of positioning head frames (12) for clamping the front ends of the left and right front axle plates, characterized in that: It also includes an inner support device (2), which includes a connecting support (21) fixedly connected to the clamping device (1). An inner support screw (22) is rotatably connected in the connecting support (21). The two ends of the inner support screw (22) are respectively threaded with inner support members (23). Rotating the inner support screw (22) causes the two inner support members (23) to move towards or away from each other. The inner support member (23) located at the same end, together with the positioning head frame (12), clamps and positions the front end of a front axle plate from the inside and outside.

2. The positioning internal support mechanism according to claim 1, characterized in that: The connecting support (21) includes a mounting base (211) with a through hole. The inner support screw (22) is installed in the through hole through a bearing (28) and can rotate freely in the through hole. Two connecting arms (212) with a V-shaped structure are installed on the mounting base (211). The end of the connecting arm (212) is fixedly provided with a connecting plate (213) that is fixedly connected to the clamping device (1).

3. The positioning internal support mechanism according to claim 2, characterized in that: A limiting element is installed on the inner support screw (22) located in the through hole to prevent the inner support screw from moving axially.

4. The positioning internal support mechanism according to claim 3, characterized in that: The limiting component includes a spacer (26) and a locking nut (27), with the spacer (26) located between the locking nut (27) and the bearing (28).

5. The positioning internal support mechanism according to claim 1, characterized in that: The inner support member (23) is equipped with an anti-rotation guide rod (25) to prevent it from rotating.

6. The positioning internal support mechanism according to claim 5, characterized in that: The anti-rotation guide rod (25) is set parallel to the inner support screw. One end of the anti-rotation guide rod is inserted into the inner support member (23), and the other end is inserted into the guide rod fixing piece (24) installed on the connecting support (21).

7. The positioning internal support mechanism according to claim 1, characterized in that: A handle (29) is installed at one end of the inner support screw (22) for rotating the inner support screw (22).

8. The positioning internal support mechanism according to claim 1, characterized in that: The inner support screw (22) includes a support mounting section (225) connected to the connecting support (21). At both ends of the support mounting section (225) are respectively provided a stepped bearing mounting section (223) and a limiting section (224). An inner support mounting section (222) is provided on the outside of the limiting section (224). Both inner support mounting sections (222) are provided with external threads in opposite directions.

9. The positioning internal support mechanism according to claim 1, characterized in that: The inner support member (23) has an internal threaded hole (231) at its center that mates with the inner support screw (22), and the inner support member (23) also has a guide rod hole (232) for the anti-rotation guide rod (25) to pass through.

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