Adjustable short rocker lifting appliance

Abstract

The utility model provides an adjustable short rocker lifting appliance. The adjustable short rocker lifting appliance comprises a hook plate and a clamping plate, a lifting hole is formed in the top end of the hook plate, a locking mechanism is arranged below the lifting hole, and the locking mechanism limits the upper side of the workpiece; the bottom end of the hook plate is bent upwards to bear a workpiece, an inserting groove is formed in the side, back on to the workpiece, of the tail end of the hook plate, the clamping device further comprises a clamping plate, the end, connected with the hook plate, of the clamping plate is a connecting end, the connecting end is provided with a mounting protruding strip, and the mounting protruding strip can be axially inserted into the inserting groove in a sliding mode. An elastic protruding block is movably embedded in the installation protruding strip, a reset spring is arranged between the elastic protruding block and the installation protruding strip, the elastic protruding block partially protrudes out of the surface of the installation protruding strip in the initial state, can retract after being pressed and is reset to the initial position through the reset spring, and a ratchet part matched with the elastic protruding block to lock the installation protruding strip is arranged in the inserting groove. The elastic convex block is matched with the ratchet part to form one-way sliding locking; the connecting end is further provided with a releasing mechanism, so that the elastic protruding block is recycled, and the clamping plate can be taken down.

Description

Technical Field

[0001] This utility model relates to the field of rocker arm manufacturing, and in particular to an adjustable short rocker arm lifting device. Background Technology

[0002] As a key component of the transmission system of vehicles and engineering vehicles, the short rocker arm typically requires specialized lifting equipment for handling and positioning during its manufacturing process. In existing technologies, short rocker arm lifting equipment mostly adopts a fixed structure, mainly consisting of a lifting frame and rigid clamping components, which lift the short rocker arm through preset gripping points.

[0003] However, such traditional lifting tools have significant limitations:

[0004] Firstly, fixed clamping mechanisms are difficult to adapt to the size differences of short rocker arms of different specifications, requiring frequent changes of tooling fixtures, which leads to a decrease in production efficiency.

[0005] Secondly, the lack of a reliable dynamic locking device makes the clamps prone to loosening due to vibration or external forces during lifting or processing, posing a risk of workpiece slippage, affecting processing accuracy and threatening operational safety. Furthermore, traditional lifting tools are poorly adapted to asymmetrical structures with short rocker arms, which may lead to localized stress concentration, especially under complex working conditions, exacerbating component damage.

[0006] Therefore, there is an urgent need to develop a lifting device with adaptive adjustment capabilities and a highly stable locking mechanism to improve the safety, versatility, and process efficiency of short rocker arm machining processes. Utility Model Content

[0007] To address the problems of existing lifting devices being unable to adapt to short rocker arms of different sizes and lacking reliable dynamic locking devices, this utility model proposes an adjustable short rocker arm lifting device, the technical solution of which is as follows.

[0008] An adjustable short rocker arm lifting device includes a hook plate and a clamping plate;

[0009] A lifting hole is provided at the top of the hook plate, and a locking mechanism is provided below the lifting hole. The locking mechanism limits the upper side of the workpiece.

[0010] The bottom end of the hook plate is bent upward to support the workpiece. A slot is provided on the side of the hook plate facing away from the workpiece. It also includes a clamping plate. The end of the clamping plate connected to the hook plate is a connecting end. The connecting end is provided with a mounting protrusion. The mounting protrusion can be axially slidably inserted into the slot.

[0011] Furthermore, an elastic protrusion is movably embedded on the mounting protrusion, and a return spring is provided between the elastic protrusion and the mounting protrusion. In the initial state, the elastic protrusion partially protrudes from the surface of the mounting protrusion. After being pressed, it can retract and return to the initial position through the return spring. The slot is provided with a thorn that cooperates with the elastic protrusion to lock the mounting protrusion. The elastic protrusion and the thorn cooperate to form a one-way sliding lock.

[0012] The connecting end is also provided with a release mechanism to retract the elastic protrusion, thereby enabling the clamping plate to be removed.

[0013] Furthermore, the hook plate is formed in one piece by two parts: one part is an arc-shaped main body, and the other part is a bearing plate extending radially from the end of the arc-shaped main body, and the angle formed by the bearing plate and the tangent at the end of the arc-shaped main body is less than 90 degrees.

[0014] Furthermore, several reinforcing ribs are provided at the angle between the arc-shaped main body and the supporting plate.

[0015] Furthermore, the clamping plate is an arc-shaped plate with its opening facing the hook plate, and the connecting end extends axially into the slot as a mounting plate to serve as a carrier for mounting the protrusion. The mounting protrusion is located on the side of the mounting plate facing the workpiece.

[0016] Furthermore, the bearing part has a slot on the side facing away from the workpiece. The axial section of the slot is a dovetail-shaped slot. The connecting end of the clamping plate is provided with a mounting protrusion that matches the slot. The axial section of the mounting protrusion is a dovetail shape that matches the slot shape.

[0017] Furthermore, the top surface of the mounting protrusion has a blind hole perpendicular to the top surface, the elastic protrusion is movably embedded in the blind hole, one end of the return spring is fixedly connected to the end face of the elastic protrusion located in the blind hole, and the other end is fixedly connected to the end face inside the blind hole.

[0018] Furthermore, the release mechanism includes a movable through hole opened by the mounting protrusion, the movable hole being coaxial with the blind hole but with a smaller diameter than the blind hole, and also includes a pull rope disposed on the bottom surface of the elastic protrusion, the other end of the pull rope passing through the movable hole and being fixedly connected to a pull ring outside the movable hole, the pull rope pulling the elastic protrusion back into the blind hole.

[0019] Furthermore, a limiting plate is installed at the opening of the blind hole, and a limiting hole with a diameter smaller than that at the opening of the blind hole is provided on the limiting plate. A limiting protrusion is provided on the outer periphery of the bottom of the elastic protrusion. The limiting protrusion is stuck by the wall of the limiting hole, so that the elastic protrusion can axially protrude from the limiting hole into the limiting plate and cannot come out of the blind hole.

[0020] Furthermore, the thorn portion is an array of tooth-shaped protrusions distributed along the length of the slot, and the elastic protrusion is a wedge-shaped block that engages with the tooth-shaped protrusions.

[0021] Furthermore, the locking mechanism is a threaded limiting rod that is screwed perpendicular to the surface of the hook plate.

[0022] This invention has the following advantages: the clamping plate, through the dovetail-shaped slot of the mounting ridge and the hook plate slot, allows axial sliding; the one-way locking mechanism of the ratchet and the elastic ridge allows the clamping plate to be gradually fixed in different positions, adapting to short rockers of different sizes; the release mechanism, by pulling the elastic ridge away from the ratchet, achieves tool-free and quick unlocking, facilitating the adjustment or replacement of the clamping plate position, improving operational efficiency, and solving the problem that fixed clamping mechanisms are difficult to adapt to the size differences of short rockers of different specifications; the elastic ridge and the ratchet in the slot form an engaging one-way locking, allowing only one-way sliding locking of the clamping plate under dynamic load, automatically blocking reverse movement, preventing workpiece loosening due to locking failure, and improving the reliability of dynamic locking. Attached Figure Description

[0023] Appendix Figure 1 This is a schematic diagram of the overall design of this utility model;

[0024] Appendix Figure 2 This is a schematic diagram of the cross-sectional structure of the slot of this utility model;

[0025] Appendix Figure 3 This is a schematic diagram showing the fit between the slot and the mounting protrusion of this utility model;

[0026] In the above attached figures: 1. Lifting hole; 2. Limiting rod; 3. Slot; 4. Arc-shaped body; 5. Bearing plate; 6. Reinforcing rib; 7. Mounting protrusion; 8. Elastic protrusion; 9. Return spring; 10. Mounting plate; 11. Rack; 12. Limiting protrusion; 13. Blind hole; 14. Pull ring; 15. Pull rope; 16. Hook plate; 17. Clamping plate; 18. Movable hole; 19. Limiting plate. Detailed Implementation

[0027] An adjustable short rocker arm lifting device includes a hook plate 16 and a clamping plate 17;

[0028] like Figure 1 , Figure 2 , Figure 3As shown, the top of the hook plate 16 has a lifting hole 1, and a locking mechanism is provided below the lifting hole 1. The locking mechanism limits the upper side of the workpiece. Preferably, the locking mechanism is a threaded limiting rod 2 that is screwed perpendicular to the surface of the hook plate 16. The bottom end of the hook plate 16 is bent upward to support the workpiece. The end of the hook plate 16 facing away from the workpiece has a slot 3. It also includes a clamping plate 17. The end of the clamping plate 17 connected to the hook plate 16 is a connecting end. The connecting end is provided with a mounting protrusion 7. The mounting protrusion 7 can slide axially into the slot 3. The mounting plate 7 is equipped with an elastic protrusion 8. A return spring 9 is provided between the elastic protrusion 8 and the mounting strip 7. When the elastic protrusion 8 is in its initial state, it partially protrudes from the surface of the mounting strip 7 and can retract into the mounting strip 7 after being pressed. The elastic protrusion 8 can also return to its initial position under the action of the return spring 9. The slot 3 is provided with a ratchet 11 that cooperates with the elastic protrusion 8 to lock the mounting strip. The elastic protrusion 8 and the ratchet 11 cooperate to form a one-way sliding lock. The connecting end is also provided with a release mechanism to retract the elastic protrusion 8, thereby allowing the clamping plate 17 to be removed. The lifting hole 1 provides a suspension fulcrum; the first locking mechanism restricts the upward movement of the workpiece, and the bottom of the hook plate 16 is bent to form a stable support surface to ensure the initial positioning of the workpiece.

[0029] like Figure 1 As shown, preferably, the hook plate 16 is formed integrally from two parts: one part is an arc-shaped main body 4, and the other part is a bearing plate 5 extending radially from the end of the arc-shaped main body 4, with the angle between the bearing plate 5 and the tangent at the end of the arc-shaped main body 4 being less than 90 degrees. Preferably, a plurality of reinforcing ribs 6 are provided at the angle between the arc-shaped main body 4 and the bearing plate 5. The arc-shaped main body 4 conforms to the shape of the workpiece, and the angle of less than 90 degrees between the bearing plate 5 and the main body forms a wrapping support, dispersing the contact pressure; the reinforcing ribs 6 further enhance the bending resistance.

[0030] like Figure 1 As shown, preferably, the clamping plate 17 is an arc-shaped plate with its opening facing the hook plate 16. The connecting end extends axially into the slot 3 as a mounting plate 10, which serves as a carrier for the mounting protrusion 7. The mounting protrusion 7 is positioned on the side of the mounting plate 10 facing the workpiece. This forms a bidirectional clamping force field with the hook plate 16, ensuring that the arc-shaped surface uniformly compresses the workpiece during clamping, thus avoiding localized stress concentration.

[0031] like Figure 1 , Figure 2 As shown, preferably, the bearing portion has a slot 3 on the side facing away from the workpiece. The axial cross-section of the slot 3 is dovetail-shaped. The connecting end of the clamping plate 17 is provided with a mounting protrusion 7 that matches the slot 3. The axial cross-section of the mounting protrusion 7 is dovetail-shaped to match the shape of the slot 3. The dovetail-shaped slot 3 matches the mounting protrusion 7, allowing the clamping plate 17 to slide and adjust axially while preventing it from coming off vertically, ensuring that the sliding direction is controllable.

[0032] like Figure 2 , Figure 3 As shown, preferably, the top surface of the mounting protrusion 7 has a blind hole 13 perpendicular to the top surface, the elastic protrusion 8 is movably embedded in the blind hole 13, one end of the return spring 9 is fixedly connected to the end face of the elastic protrusion 8 located in the blind hole 13, and the other end is fixedly connected to the inner end face of the blind hole 13. Further, the ratchet 11 is an array of toothed protrusions distributed along the length direction of the slot 3, and the elastic protrusion 8 is a wedge-shaped block that meshes with the toothed protrusions.

[0033] like Figure 2 , Figure 3 As shown, preferably, the release mechanism includes an active hole 18 opened by the mounting protrusion 7, the active hole 18 being coaxial with the blind hole 13 but having a smaller diameter than the blind hole 13, and also includes a pull rope 15 provided on the bottom surface of the elastic protrusion 8, the other end of the pull rope 15 passing through the active hole 18 and being fixedly connected to a pull ring 14 outside the active hole 18, the pull rope 15 pulling the elastic protrusion 8 back into the blind hole 13.

[0034] like Figure 2 , Figure 3 As shown, preferably, a limiting plate 19 is installed at the opening of the blind hole 13. The limiting plate 19 has a limiting hole with a diameter smaller than that at the opening of the blind hole 13. A limiting protrusion 12 is provided on the outer periphery of the bottom of the elastic protrusion 8. The limiting protrusion 12 is stuck by the wall of the limiting hole, so that the elastic protrusion 8 can axially protrude from the limiting plate 19 in the limiting hole and cannot be dislodged from the blind hole 13. The limiting hole restricts the displacement range of the elastic protrusion 8, which ensures that the protrusion can protrude and engage with the ratchet, and prevents it from falling off and failing.

[0035] The method of using this utility model is as follows: The equipment is suspended to the hoisting machinery through the lifting hole 1. The workpiece is placed on the bent bottom support surface of the hook plate 16, and the upward movement of the workpiece is restricted by the limiting rod 2. The clamping plate 17 is pushed to slide along the slot 3 until it fits the workpiece. The elastic protrusion 8 engages with the ratchet, automatically locking the current position and preventing reverse sliding. During vibration or load impact, the ratchet and elastic protrusion 8 engage and automatically lock, preventing the clamping plate 17 from retracting. Pulling the pull ring 14 causes the pull rope 15 to retract the elastic protrusion 8, disengaging the elastic protrusion 8 from the ratchet, thereby realizing the reverse sliding or disassembly of the clamping plate 17. This utility model achieves full degree of freedom constraint through the bidirectional limiting of the ratchet, elastic protrusion 8, and dovetail slot 3. The engagement of the elastic protrusion 8 and the spring return provide continuous locking force. Reverse self-locking protection is provided during vibration or impact. The arc-shaped body 4, the reinforcing rib 6, and the dovetail interlock work together to resist radial and axial loads, ensuring hoisting stability.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable short rocker arm lifting device, characterized in that: Includes a hook plate (16) and a clamping plate (17); The top of the hook plate (16) is provided with a lifting hole (1), and a locking mechanism is provided below the lifting hole (1). The locking mechanism limits the upper side of the workpiece. The bottom end of the hook plate (16) is bent upward to support the workpiece. The hook plate (16) has a slot (3) on the side facing away from the workpiece at the end. It also includes a clamping plate (17). The end of the clamping plate (17) connected to the hook plate (16) is the connecting end. The connecting end is provided with a mounting protrusion (7). The mounting protrusion (7) can be axially slid into the slot (3). Furthermore, an elastic protrusion (8) is movably embedded on the mounting protrusion (7), and a return spring (9) is provided between the elastic protrusion (8) and the mounting protrusion (7). In the initial state, the elastic protrusion (8) partially protrudes from the surface of the mounting protrusion (7). After being pressed, it can retract and be reset to the initial position by the return spring (9). The slot (3) is provided with a ratchet (11) that cooperates with the elastic protrusion (8) to lock the mounting protrusion. The elastic protrusion (8) and the ratchet (11) cooperate to form a one-way sliding lock. The connecting end is also provided with a release mechanism to retract the elastic protrusion (8), thereby enabling the clamping plate (17) to be removed.

2. The adjustable short rocker arm lifting device according to claim 1, characterized in that: The hook plate (16) is formed in one piece by two parts: one part is an arc-shaped main body (4), and the other part is a bearing plate (5) that extends radially from the end of the arc-shaped main body (4). The angle formed by the bearing plate (5) and the tangent at the end of the arc-shaped main body (4) is less than 90 degrees.

3. The adjustable short rocker arm lifting device according to claim 2, characterized in that: Several reinforcing ribs (6) are provided at the angle between the arc-shaped main body (4) and the bearing plate (5).

4. The adjustable short rocker arm lifting device according to claim 1, characterized in that: The clamping plate (17) is an arc-shaped plate with its opening facing the hook plate (16). The connecting end extends axially into the slot (3) to form a mounting plate (10) as a carrier for mounting the protrusion (7). The mounting protrusion (7) is located on the side of the mounting plate (10) facing the workpiece.

5. The adjustable short rocker arm lifting device according to claim 2, characterized in that: The bearing plate (5) has a slot (3) on the side facing away from the workpiece. The axial section of the slot (3) is dovetail-shaped. The connecting end of the clamping plate (17) is provided with an installation protrusion (7) that matches the slot (3). The axial section of the installation protrusion (7) is a dovetail-shaped that matches the shape of the slot (3).

6. The adjustable short rocker arm lifting device according to claim 1, characterized in that: The mounting protrusion (7) has a blind hole (13) perpendicular to the top surface. The elastic protrusion (8) is movably embedded in the blind hole (13). One end of the return spring (9) is fixedly connected to the end face of the elastic protrusion (8) located in the blind hole (13), and the other end is fixedly connected to the end face inside the blind hole (13).

7. The adjustable short rocker arm lifting device according to claim 6, characterized in that: The release mechanism includes an active hole (18) opened by the mounting protrusion (7), the active hole (18) is coaxial with the blind hole (13), but the hole diameter is smaller than that of the blind hole (13), and also includes a pull rope (15) provided on the bottom surface of the elastic protrusion (8). The other end of the pull rope (15) passes through the active hole (18) and is fixedly connected to the pull ring (14) outside the active hole (18). The pull rope (15) pulls the elastic protrusion (8) to be retracted into the blind hole (13).

8. The adjustable short rocker arm lifting device according to claim 6, characterized in that: A limiting plate (19) is installed at the opening of the blind hole (13). The limiting plate (19) has a limiting hole with a diameter smaller than that of the blind hole (13). A limiting protrusion (12) is provided on the outer periphery of the bottom of the elastic protrusion (8). The limiting protrusion (12) is stuck by the wall of the limiting hole, so that the elastic protrusion (8) can axially protrude from the limiting plate (19) in the limiting hole and cannot be dislodged from the blind hole (13).

9. The adjustable short rocker arm lifting device according to claim 1, characterized in that: The thorn (11) is an array of tooth-shaped protrusions distributed along the length of the slot (3), and the elastic protrusion (8) is a wedge-shaped block that meshes with the tooth-shaped protrusions.

10. The adjustable short rocker arm lifting device according to claim 1, characterized in that: The locking mechanism is a threaded limiting rod (2) that is screwed perpendicular to the surface of the hook plate (16).

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