Jack piston rod casting

Abstract

The utility model discloses a jack piston rod casting, which relates to the technical field of jack piston rods, and comprises a rod body and a top plate, the top plate is movably connected to the upper end of the rod body, the top end of the rod body is provided with a placing groove, the side surface of the top end of the rod body is provided with a through hole, the lower end of the top plate is fixedly provided with an inserting block, and the inserting block is matched and inserted with the placing groove. A limiting hole is formed in the lower end of the inserting block, and a U-shaped inserting rod is inserted into the penetrating hole in a penetrating mode; a piston rod casting of the jack; through cooperation of the U-shaped insertion rods and the limiting clamping mechanisms, rapid mounting and dismounting of the top plate are achieved, and operation is easy and convenient; the clamping ring and the clamping groove are matched and clamped to enhance the connection stability and prevent the top plate from loosening; the elastic connecting clamp is convenient to expand and reset, and the disassembly and assembly efficiency is improved; the pressing plate is matched with the spring to provide a buffering effect, so that tight attachment of the limiting mechanism is ensured; and by arranging the positioning block and the shifting plate, the operation convenience is further optimized, and the reliability of the overall structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of jack piston rod technology, specifically a jack piston rod casting. Background Technology

[0002] Jacks are common lifting devices widely used in automotive repair, construction, and other fields. The piston rod, as the core component of a jack, directly affects its performance.

[0003] Traditional piston rods are often fixed to the top plate and the rod body by threads or welding, which is inconvenient to disassemble and assemble and is prone to loosening. In the existing technology, when it is necessary to increase the contact surface of the top plate, the jack needs to be replaced, which not only requires the preparation of multiple jacks, but also makes replacement troublesome.

[0004] Therefore, there is an urgent need for a jack piston rod structure that is easy to assemble and disassemble and can be fixed stably. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a jack piston rod casting that solves the problem of disassembly and installation between the jack rod and the top plate. Compared with traditional top plate disassembly and installation, it is more stable and equally stable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a jack piston rod casting, comprising a rod body and a top plate, wherein the top plate is movably connected to the upper end of the rod body, a placement groove is provided at the top end of the rod body, a through hole is provided on the side of the top end of the rod body, an insert block is fixed at the lower end of the top plate, the insert block is matched and inserted into the placement groove, a limiting hole is provided at the lower end of the insert block, a U-shaped insert rod is inserted into the through hole and passes through the limiting hole, annular slots are provided at both ends of the U-shaped insert rod, a limiting locking mechanism is sleeved on the upper end of the rod body, and the limiting locking mechanism is matched and locked into the slots.

[0007] Furthermore: the limiting and locking mechanism includes a connecting plate, and a retaining ring is fixed at the lower end of the connecting plate, the retaining ring being matched and locked with the retaining groove.

[0008] Furthermore, the limiting and locking mechanism also includes a connecting card, which fits against the outer side of the rod body. The middle section of the connecting card has a V-shaped elastic structure that can expand outward or return to its original position.

[0009] Furthermore: Limiting grooves are provided on both sides of the top of the rod, and a pressure plate is slidably connected in the limiting groove. A spring is fixed at the lower end of the pressure plate, and a lever is fixed at the upper end of the connecting plate. The spring abuts against the upper end of the lever.

[0010] Furthermore: positioning blocks are fixed on both sides of the lower end of the top plate, the positioning blocks abut against the upper end of the pressure plate, and the pressure plate can slide along the limiting groove and compress the spring.

[0011] Furthermore: the dial is used for manual operation to engage or disengage the retaining ring from the retaining groove.

[0012] This utility model provides a jack piston rod casting. Compared with the prior art, it has the following advantages:

[0013] This jack piston rod casting, through the cooperation of the U-shaped insert rod and the limiting snap-fit ​​mechanism, enables the rapid installation and disassembly of the top plate, making operation simple; the matching snap-fit ​​of the snap ring and the snap-fit ​​groove enhances the connection stability and prevents the top plate from loosening; the elastic connecting clip facilitates expansion and reset, improving disassembly and assembly efficiency; the cooperation of the pressure plate and the spring provides a buffering effect, ensuring a tight fit of the limiting mechanism; the setting of the positioning block and the lever plate further optimizes the ease of operation and improves the reliability of the overall structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the limiting and locking mechanism of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the cross-section of the top plate and the insert block of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the cross-section of the insert block and the U-shaped insert rod of this utility model;

[0018] Figure 5 This is a schematic diagram of the top rod and placement groove of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the connecting card and the retaining ring of this utility model;

[0020] Figure 7 for Figure 5 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Rod body; 2. Top plate; 3. Placement slot; 4. U-shaped insert rod; 5. Slot; 6. Insert block; 7. Limiting hole; 8. Connecting plate; 9. Snap ring; 10. Pulley; 11. Connecting clip; 12. Through hole; 13. Limiting slide groove; 14. Pressure plate; 15. Spring; 16. Positioning block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-7 This utility model provides a technical solution: a jack piston rod casting; specifically, it consists of a rod body 1 and a top plate 2, with the top plate 2 movably connected to the upper end of the rod body 1. The rod body 1 moves upward by air pressure or oil pressure, and the top plate 2 contacts an object to lift it up. The rod body 1 and the top plate 2 are core components of the jack, which is well known to those skilled in the art and will not be described in detail here. A placement groove 3 is provided at the top of the rod body 1, and a through hole 12 is provided on the side of the top of the rod body 1. An insert block 6 is fixed at the lower end of the top plate 2, and the insert block 6 is matched and inserted into the placement groove 3. A limiting hole 7 is provided at the end of the rod body 1. A U-shaped insert rod 4 is inserted through the side of the top end of the rod body 1. A slot 5 is provided at both ends of the U-shaped insert rod 4. A limiting locking mechanism is sleeved on the upper end of the rod body 1. The limiting locking mechanism matches and locks with the slot 5 to stably limit the U-shaped insert rod 4. After the U-shaped insert rod 4 is stable, the insert block 6 at the lower end of the top plate 2 can be stabilized, thus making the top plate 2 more stable. The limiting locking mechanism includes a connecting plate 8. A retaining ring 9 is fixed at the lower end of the connecting plate 8. The retaining ring 9 matches and locks with the slot 5. The matching of the retaining ring 9 and the slot 5 facilitates the installation of the top plate 2. Similarly, it is easy to disassemble.

[0024] The limiting locking mechanism also includes a connecting card 11, which is attached to the outer side of the rod body 1. The middle section of the connecting card 11 is V-shaped. During installation, the connecting card 11 is expanded to both sides, and the connecting plate 8 can be easily placed at both ends of the rod body 1. During disassembly, the connecting plate 8 is lifted upward to separate the retaining ring 9 from the retaining groove 5. Then, the connecting card 11 is expanded outward, which facilitates disassembly. After disassembly, the connecting card 11 is placed downward on the rod body 1 for easy operation. The connecting card 11 is elastic, which facilitates expansion and can recover through its own elasticity.

[0025] Limiting grooves 13 are provided on both sides of the top of the rod 1. A pressure plate 14 is slidably connected in the limiting grooves 13. A symmetrical spring 15 is fixed at the lower end of the pressure plate 14. A lever 10 is fixed at the upper end of the connecting plate 8. The spring 15 is located at the upper end of the lever 10 and is movably abutted against it. Positioning blocks 16 are fixed on both sides of the lower end of the top plate 2. The positioning blocks 16 press on the pressure plate 14. The pressure plate 14 moves downward to press the spring 15. The spring 15 presses the lever 10. The spring 15 has a movable extension when pressed. This not only makes it easy to engage the retaining ring 9, but also makes it easy to disassemble. Similarly, the lever 10 not only makes it easy for the spring 15 to press, but also makes it easy for the user to operate upward or downward, thereby facilitating the engagement and disengagement of the retaining ring 9 from the retaining groove 5.

Claims

1. A jack piston rod casting, comprising a rod body (1) and a top plate (2), wherein the top plate (2) is movably connected to the upper end of the rod body (1), characterized in that: The top of the rod (1) is provided with a placement groove (3), and the top side of the rod (1) is provided with a through hole (12). The bottom of the top plate (2) is fixed with a plug (6). The plug (6) is matched and inserted into the placement groove (3). The bottom of the plug (6) is provided with a limiting hole (7). A U-shaped plug (4) is inserted into the through hole (12) and passes through the limiting hole (7). The two ends of the U-shaped plug (4) are provided with annular slots (5). The upper end of the rod (1) is provided with a limiting locking mechanism. The limiting locking mechanism is matched and locked with the slot (5).

2. The jack piston rod casting according to claim 1, characterized in that: The limiting and locking mechanism includes a connecting plate (8), and a retaining ring (9) is fixed at the lower end of the connecting plate (8). The retaining ring (9) is matched and locked with the retaining groove (5).

3. A jack piston rod casting according to claim 2, characterized in that: The limiting and locking mechanism also includes a connecting card (11), which is attached to the outside of the rod (1). The middle section of the connecting card (11) is a V-shaped elastic structure that can expand outward or reset.

4. A jack piston rod casting according to claim 2, characterized in that: The top of the rod (1) has a limiting groove (13) on both sides. A pressure plate (14) is slidably connected in the limiting groove (13). A spring (15) is fixed at the lower end of the pressure plate (14). A lever (10) is fixed at the upper end of the connecting plate (8). The spring (15) abuts against the upper end of the lever (10).

5. A jack piston rod casting according to claim 4, characterized in that: The top plate (2) has positioning blocks (16) fixed on both sides of its lower end. The positioning blocks (16) abut against the upper end of the pressure plate (14). The pressure plate (14) can slide along the limiting groove (13) and compress the spring (15).

6. A jack piston rod casting according to claim 4, characterized in that: The dial (10) is used for manual operation to engage or disengage the retaining ring (9) from the retaining groove (5).

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