A manual positioning hook pin for vehicle body transfer

Abstract

The utility model discloses a manual positioning hook pin for vehicle body transfer, which comprises a body, a guide pin fixed on the body, a positioning pin connected with the body, a pressing hook, a connecting rod and a pull rod. A guide round hole and a V-shaped sliding groove are formed on the pressing hook. The guide round hole is in sliding fit with the guide pin to stabilize the guide, and the V-shaped sliding groove is in sliding fit with the connecting rod. By operating the pull rod to drive the connecting rod to move axially, the movement can be converted into the transverse extension or retraction of the pressing hook through the cooperation of the V-shaped sliding groove, so that the clamping and loosening of the workpiece are realized. The utility model has the advantages of simple and compact structure, reliable locking and special suitability for the long-distance transportation of the vehicle body-in-white.

Description

Technical Field

[0001] This utility model relates to the field of positioning clamps, specifically to a manual positioning hook for vehicle body rotation. Background Technology

[0002] In the automotive manufacturing process, the welded body-in-white needs to be removed from the welding production line and transported to the painting and final assembly workshops via transfer carts. In traditional short-distance, flat-surface transport conditions within the factory, simple locating pins are typically used to position the body-in-white. While this method meets basic transport requirements, it lacks a clamping device, resulting in limited stability.

[0003] However, with the diversification of production models, the transfer distance of body-in-white may increase significantly, even requiring long-distance road transport. Under such conditions, road bumps are unavoidable, and transfer trolleys with only locating pins and no clamping devices will cause the body-in-white to sway and bounce during transport. This instability can easily lead to collisions between the body-in-white and transport vehicles or other objects, damaging the body or its paint, affecting product quality, potentially leading to rework, and increasing production costs.

[0004] To address these issues, the industry has proposed using a hook-and-pin mechanism for positioning and clamping the body-in-white. However, existing hook-and-pin mechanisms are often complex and bulky, making them unsuitable for installation and integration on space-constrained transport vehicles. Furthermore, the clamping function of some existing mechanisms is at risk of failure during long-distance transport due to continuous bumps, compromising long-term clamping reliability and potentially causing damage to the body.

[0005] Therefore, in the field of vehicle body transfer, especially in long-distance transportation scenarios, there is an urgent need to develop a simple, compact, easy-to-operate, and stable and reliable hook-and-lock mechanism to effectively solve the problem of vehicle body damage caused by transportation bumps. Utility Model Content

[0006] The purpose of this invention is to provide a manual positioning hook mechanism that is simple in structure, small in size, easy to use, and stable in application, in order to solve the problem that the vehicle body is easily damaged due to bumps during long-distance road transportation.

[0007] This utility model discloses a manual positioning hook for vehicle body rotation, comprising: a base plate; a connecting plate fixed on the base plate; a body, the lower end of which is connected to the connecting plate via a coaxially arranged frustum, the interior of which has an axially extending waist-shaped connecting rod mounting hole and a clamping hook mounting groove perpendicular to and communicating with the connecting rod mounting hole; a pin seat, which is inserted into the upper end face of the body via an annular boss; a positioning pin, which is fixed to the pin seat, and the positioning pin has a through hole penetrating its side wall and aligned with the clamping hook mounting groove; and a clamping hook with a thickness adapted to the width of the clamping hook mounting groove and slidably accommodated therein, the clamping hook having a... A “V”-shaped groove; a connecting rod slidably accommodated within the mounting hole of the connecting rod, the connecting rod passing through and slidingly engaging with the “V”-shaped groove of the clamping hook; a “U”-shaped connecting block having an arc-shaped hole connecting to the lower end of the connecting rod; a pull rod pivotally mounted and abutting against the connecting block to drive the connecting block and thus cause the connecting rod to slide axially; a limiting block fixedly disposed on the base plate; and a pluggable limiting rod; wherein both the limiting block and the pull rod have insertion holes, and when the pull rod pivots to the clamping position where the clamping hook extends out of the through hole, the insertion holes of the two are aligned to allow the limiting rod to be inserted for locking.

[0008] In a preferred embodiment, the angle of the "V"-shaped groove is 150°.

[0009] In a preferred embodiment, when the pull rod is operated to the released position, the main body of the clamping hook is completely received in the through hole of the positioning pin, and its clamping end face does not protrude from the outer contour surface of the positioning pin.

[0010] In a preferred embodiment, one end of the pull rod is pivotally mounted on the base plate, and the other end forms an abutment fit with the bottom of the connecting block, thereby converting the pivoting motion of the pull rod into the lifting motion of the connecting block.

[0011] In a preferred embodiment, the positioning pin and the pin seat are an integral structure.

[0012] In a preferred embodiment, the connecting rod is a rod body that has a planar structure at least in the part that mates with the "V"-shaped groove to ensure a stable sliding fit.

[0013] In a preferred embodiment, the substrate is provided with mounting holes for fixing the entire manual positioning pin to an external device.

[0014] The beneficial effects of this utility model are as follows: Through the ingenious cooperation between the connecting rod and the "V"-shaped groove on the clamping hook, the pivotal movement of the pull rod is ultimately transformed into the lateral extension and retraction of the clamping hook, achieving a purely mechanical transmission. It eliminates the need for external power components such as cylinders, resulting in a simple and compact overall structure with minimal space requirements. Simultaneously, the use of a limit rod insertion locking method forms a rigid mechanical lock, which is more reliable than friction or pneumatic locking during long-distance transportation, eliminating the risk of loosening. The operation process only requires manually pulling the pull rod and inserting / removing the limit rod to complete clamping and loosening; the process is intuitive and requires no professional training. The all-mechanical structure eliminates pneumatic components, pipelines, and control systems, significantly reducing manufacturing and subsequent maintenance costs.

[0015] This invention utilizes the lever principle and the force-amplifying effect of the inclined plane (V-shaped groove) to obtain a strong clamping force with a small operating force, effectively clamping the workpiece and preventing it from shaking during transportation. After clamping, it is locked by a limit rod, providing double safety protection and effectively avoiding damage to the vehicle body caused by accidental loosening, thus ensuring product quality.

[0016] This utility model allows the clamping hook to retract completely into the positioning pin when the device is released, without affecting the loading and unloading of the workpiece (body-in-white). It also avoids interference and scratches between the clamping mechanism and the body or lifting device, simplifying the work process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0018] Figure 1 This is a schematic diagram of a vehicle body rotating using a manual positioning hook according to the present invention; Figure 2 This is an exploded view of a vehicle body rotating using a manual positioning hook according to the present invention. Figure 3 This is a schematic diagram of a positioning pin for a vehicle body using a manual positioning hook pin according to the present invention; Figure 4 This is a schematic diagram of the main body of a vehicle body using a manual positioning hook according to the present invention. Figure 5 This is a schematic diagram of the main body of a vehicle body using a manual positioning hook according to the present invention. Figure 6 This is a schematic diagram of a vehicle body rotating using a manual positioning hook according to the present invention; Detailed Implementation

[0019] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] To achieve reliable positioning and clamping of vehicle body parts during transport, this invention provides a purely mechanical manual positioning hook. Please refer to [link / reference]. Figure 1 The hook mechanism includes a positioning pin 01, a pin seat 02, a body 03, a clamping hook 04, a connecting rod 05, a connecting block 06, a pull rod 07, a connecting plate 08, a base plate 09, a limiting rod 10, a limiting block 11, and a positioning pin 12 not shown in the drawings.

[0021] In terms of specific structure, the base plate 09 serves as the foundation of the entire device, on which a connecting plate 08 is fixed. The main body 03 is stably mounted on the connecting plate 08 via a frustum coaxially arranged on its lower end face; an annular boss for inserting a pin seat 02 is coaxially arranged on its upper end face.

[0022] The main body 03 is the core support and guiding component. Internally, it has a clamping hook mounting groove extending axially, the width of which corresponds to the thickness of the clamping hook 04. On the outer circumferential surface of the main body 03, there is a connecting rod mounting hole extending radially through it; this hole is an oblong hole extending axially along the main body, and a positioning pin hole for mounting the positioning pin 12. The connecting rod mounting hole and the clamping hook mounting groove are perpendicular to each other and communicate with each other.

[0023] Motion conversion fit: The connecting rod 05 passes through the connecting rod mounting hole of the main body 03 and simultaneously passes through the "V"-shaped groove of the clamping hook 04, forming a core sliding fit. It is this structure that allows the axial up-and-down movement of the connecting rod 05 to be precisely converted into the lateral extension and retraction movement of the clamping hook 04 through the guiding effect of the inclined surface.

[0024] Auxiliary guiding mechanism: The positioning pin 12 (not shown) is fixed to the body 03 and passes through the round hole on the clamping hook 04. Its function is to provide additional guidance and support for the lateral sliding of the clamping hook 04, preventing it from deflecting or getting stuck during movement, and ensuring the smoothness and accuracy of the movement.

[0025] In the drive and locking mechanism, the operating lever 07 connects to the lower end of the connecting rod 05 via a U-shaped connecting block 06 with an arc-shaped hole, allowing control of the clamping hook 04's clamping and loosening through different strokes. Once the clamping action is complete, the mechanism is rigidly locked by inserting the pluggable limiting rod 10 into the corresponding insertion hole on the lever 07, which is aligned with the limiting block 11 fixed to the base plate 09, preventing the clamping hook from loosening.

[0026] The complete workflow of this embodiment is as follows: During operation, lifting the pull rod 07 moves the connecting rod 05 upward, causing it to slide within the "V"-shaped groove, retracting the clamping hook 04 inward. Once the workpiece is in position, pressing down the pull rod 07 moves the connecting rod 05 downward, pushing the clamping hook 04 out to clamp the workpiece. Throughout the process, the positioning pin 12 slides within the circular hole of the clamping hook 04, ensuring stable movement. Finally, the limit rod 10 is inserted to lock the position.

[0027] It will be readily understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, substitutions, improvements, etc., made under the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A vehicle body rotating manual positioning pin, characterized in that, It includes a base plate (09); a connecting plate (08) fixed on the base plate (09); a body (03), the lower end of which is connected to the connecting plate (08) through a coaxially arranged frustum, the upper end face of the body (03) is provided with a clamping hook mounting groove extending along its axial direction, the outer peripheral surface of the body (03) is provided with a connecting rod mounting hole extending along its radial direction, the connecting rod mounting hole is an axially extending waist-shaped hole of the body (03), the outer peripheral surface of the body (03) is also provided with a positioning pin hole, the positioning pin hole is located above the waist-shaped hole, and a positioning pin (12) is provided in the positioning pin hole; a pin seat (02), which is inserted into the upper end face of the body (03) through an annular boss; a positioning pin (01), which is fixed on the pin seat (02), the positioning pin (01) is provided with a through-wall and a connection to the pin seat (02). The through hole is aligned with the mounting groove of the clamping hook; a clamping hook (04) with a thickness adapted to the groove width of the clamping hook mounting groove and slidably accommodated therein, the clamping hook (04) having a "V" shaped groove and a round hole; a connecting rod (05) slidably accommodated in the mounting hole of the connecting rod, the connecting rod (05) passing through the round hole of the clamping hook (04) and driving the clamping hook (04) to move axially along the body (03), the positioning pin (12) passing through the "V" shaped groove of the clamping hook (04) for sliding engagement; a connecting block (06) with a "U" shaped structure having an arc-shaped hole connected to the lower end of the connecting rod (05); a pull rod (07) pivotally mounted and abutting against the connecting block (06) to drive the connecting block (06) and thus drive the connecting rod (05) to slide axially.

2. The manual positioning hook according to claim 1, characterized in that, The angle of the "V" shaped groove is 150°.

3. The manual positioning hook according to claim 1, characterized in that, When the pull rod (07) is operated to the released position, the body of the clamping hook (04) is completely received in the through hole of the positioning pin (01), and its clamping end face does not protrude from the outer contour surface of the positioning pin (01).

4. The manual positioning latch according to claim 1, characterized in that, One end of the pull rod (07) is pivotally mounted on the base plate (09), and the other end forms an abutment fit with the bottom of the connecting block (06), thereby converting the pivoting motion of the pull rod (07) into the lifting motion of the connecting block (06).

5. The manual positioning latch according to claim 1, characterized in that, The positioning pin (01) and the pin seat (02) are an integral structure.

6. The manual positioning latch according to claim 1, characterized in that, The connecting rod (05) is a rod body, which has a planar structure at least in the part that mates with the "V"-shaped groove.

7. The manual positioning pin according to claim 1, characterized in that, The U-shaped opening of the connecting block (06) faces the pivot end of the pull rod (07).

8. The manual positioning latch according to claim 1, characterized in that, The substrate (09) is provided with mounting holes for fixing the entire manual positioning hook to an external device.

9. The manual positioning pin according to claim 1, characterized in that, The lever (07) includes a handle portion for easy operation by the user and a lever arm portion that acts with the connecting block (06).

10. The manual positioning pin according to claim 1, characterized in that, It also includes a limiting block (11) fixedly disposed on the substrate (09); and a pluggable limiting rod (10); wherein the limiting block (11) and the pull rod (07) are both provided with insertion holes. When the pull rod (07) is pivoted to the clamping position where the clamping hook (04) extends out of the through hole, the insertion holes of the two are aligned with each other so that the limiting rod (10) can be inserted to achieve locking.

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