Ejector rod for hydraulic tool
By dividing the pin of the hydraulic jack into a piston rod and a hoisting rod, and using the fitting of the plug and rotary rod, the rapid replacement of the pinch rod is facilitated, which solves the problem of deformation or breakage of the pinch rod and simplifies the maintenance process.
Patent Information
- Application Number
- CN202422268246.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The pins of existing hydraulic jacks are prone to deform or break when they are held close to the limit weight for a long time, and the replacement process is cumbersome, so the hydraulic jack needs to be removed as a whole.
The hoist rod is divided into two parts: the piston rod and the hoist rod. The piston rod and the hoist rod can be fixed. The hoist rod can be slidably installed in the storage groove. The removable connection between the piston rod and the hoist rod is achieved through the coordination of the insertion block and the rotary rod, and the hoist rod is facilitated by using the return spring and the rotary ring.
It realizes rapid replacement of the hoisting rod, simplifies the maintenance process, and avoids the trouble of disassembling the hydraulic jack as a whole.
Smart Images
Figure CN223060585U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic tools, and particularly relates to a push rod for a hydraulic tool. Background Art
[0002] Hydraulic tools are various devices that convert powerful hydraulic power into mechanical outputs such as reciprocating linear motion, rotary motion, and cycloidal motion. A hydraulic jack is a type of hydraulic tool, and the movable rod is the push rod, which can jack up an object to a certain extent.
[0003] When a hydraulic jack is in use, when the push rod of the hydraulic jack jacks up a weight close to the use limit for a long time, the push rod will be deformed or even broken. Most of the push rods in the existing hydraulic jacks are integrally arranged. When replacing the push rod, the entire hydraulic jack needs to be disassembled, and the entire push rod needs to be taken out and replaced, which is cumbersome to operate. Content of the Utility Model
[0004] The purpose of the utility model is to provide a push rod for a hydraulic tool to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A push rod for a hydraulic tool, including a hydraulic jack body. A movable push rod is installed inside the hydraulic jack body. The push rod includes a piston rod and a jacking rod. The piston rod and the jacking rod can be fixed. A receiving groove is opened at the top of the piston rod. The jacking rod is slidably installed inside the receiving groove. Installation grooves are symmetrically opened at the bottom of the jacking rod. Plug blocks are slidably installed inside the jacking rod corresponding to the installation grooves. Jack holes are opened at the inner position of the top end of the piston rod corresponding to the receiving groove. The plug blocks are slidably connected with the jack holes.
[0006] As a further preference of this technical solution, a rotating rod is rotatably installed at the middle position of the installation groove at the bottom end of the jacking rod through a shaft pin. Limiting rods are symmetrically and fixedly installed at the positions of the plug blocks corresponding to the bottom end of the jacking rod. Limiting holes are opened at the positions of the plug blocks corresponding to the limiting rods. The limiting holes are slidably connected with the limiting rods. The bottom end of the rotating rod is arranged between the two limiting rods, and the bottom end of the rotating rod presses against one side of the plug block.
[0007] As a further preference of this technical solution, a return spring is sleeved on the outer side of the limiting rod. One side of the return spring is fixedly connected with one side of the plug block, and the other side of the return spring is fixedly connected with the jacking rod.
[0008] As a further preference of this technical solution, a chamfer is opened on one side of the plug block away from the return spring.
[0009] As a further preference of the present technical solution, an extrusion block is fixedly installed at the top of the rotating rod, and a rotating ring is rotatably installed at a position corresponding to the extrusion block on the outer side of the jacking rod. A trapezoidal block is fixedly installed inside the rotating ring, and the trapezoidal block is in extrusion contact with the extrusion block.
[0010] As a further preference of the present technical solution, the top of the piston rod does not extend beyond the top end of the hydraulic jack body.
[0011] The utility model provides a jacking rod for a hydraulic tool, which has the following beneficial effects:
[0012] (1) In the utility model, the existing jacking rod is divided into two parts, namely a piston rod and a jacking rod. When the hydraulic jack body operates, the jacking rod will slide out of the inside of the hydraulic jack body for bearing the weight of an object. When a weight close to the use limit is jacked up for a long time, only the jacking rod will be damaged. Then, by installing a new jacking rod, the replacement and repair of the hydraulic jack can be realized.
[0013] (2) In the utility model, by rotating the rotating ring, the extrusion of the trapezoidal block on the extrusion block is cancelled. Under the pulling of the reset spring on the insertion block, the insertion block will be driven to slide along the limiting rod, and the piston rod and the jacking rod can be separated. Then, a new jacking rod is inserted into the inside of the receiving groove. By rotating the rotating ring, the trapezoidal block is driven to squeeze the extrusion block, which will drive the rotating rod to rotate. Furthermore, the bottom end of the rotating rod will be driven to squeeze one side of the insertion block, and the insertion block will be controlled to slide along the limiting rod, and the insertion block will be driven to slide into the jacking hole for the installation between the piston rod and the jacking rod, which is convenient for the installation and disassembly of the jacking rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 is a partial exploded structure schematic diagram of the utility model;
[0016] Figure 3 is Figure 2 an enlarged view of part A in
[0017] Figure 4 is a partial sectional exploded structure schematic diagram of the utility model;
[0018] In the figure: 1. Hydraulic jack body; 2. Piston rod; 3. Jacking rod; 4. Receiving groove; 5. Installation groove; 6. Insertion block; 7. Jacking hole; 8. Rotating rod; 9. Limiting rod; 10. Limiting hole; 11. Reset spring; 12. Chamfer; 13. Extrusion block; 14. Rotating ring; 15. Trapezoidal block. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0020] The present utility model provides a technical solution: As Figures 1 to 4 shown, in this embodiment, a jack rod for a hydraulic tool includes a hydraulic jack body 1. A movable jack rod is installed inside the hydraulic jack body 1. The jack rod includes a piston rod 2 and a jacking rod 3. The piston rod 2 and the jacking rod 3 can be fixed. A receiving groove 4 is opened at the top of the piston rod 2. The jacking rod 3 is slidably installed inside the receiving groove 4. Installation grooves 5 are symmetrically opened at the bottom of the jacking rod 3. Plug blocks 6 are slidably installed inside the jacking rod 3 corresponding to the installation grooves 5. A jack hole 7 is opened at the position inside the receiving groove 4 corresponding to the top end of the piston rod 2. The plug blocks 6 are slidably connected with the jack holes 7. By dividing the existing jack rod into two parts, namely the piston rod 2 and the jacking rod 3, when the hydraulic jack body 1 operates, the jacking rod 3 will slide out of the inside of the hydraulic jack body 1 for bearing the weight of an object. When a weight close to the use limit is jacked up for a long time, only the jacking rod 3 will be damaged. Then, by installing a new jacking rod 3, the replacement and repair of the hydraulic jack can be realized.
[0021] As Figures 1 to 4 shown, a rotating rod 8 is rotatably installed at the middle position of the installation groove 5 corresponding to the bottom end of the jacking rod 3 through a shaft pin. Limiting rods 9 are symmetrically and fixedly installed at the positions corresponding to the plug blocks 6 at the bottom end of the jacking rod 3. Limiting holes 10 are opened at the positions of the plug blocks 6 corresponding to the limiting rods 9. The limiting holes 10 are slidably connected with the limiting rods 9. The bottom end of the rotating rod 8 is arranged between the two limiting rods 9. The bottom end of the rotating rod 8 presses against one side of the plug block 6.
[0022] By controlling the rotation of the rotating rod 8, the bottom end of the rotating rod 8 will press against one side of the plug block 6, controlling the plug block 6 to slide along the limiting rod 9, driving the plug block 6 to slide into the jack hole 7 for installing the piston rod 2 and the jacking rod 3, facilitating the installation of the new jacking rod 3.
[0023] As Figures 1 to 4 shown, a return spring 11 is sleeved outside the limiting rod 9. One side of the return spring 11 is fixedly connected with one side of the plug block 6, and the other side of the return spring 11 is fixedly connected with the jacking rod 3.
[0024] When the jacking rod 3 is deformed or even broken, cancel the control of the rotating rod 8. Driven by the return spring 11 pulling the plug block 6, the plug block 6 will slide along the limiting rod 9, driving the plug block 6 to slide out of the jack hole 7. At this time, pulling the jacking rod 3 upward can separate the piston rod 2 and the jacking rod 3.
[0025] As Figures 1 to 4As shown, a chamfer 12 is provided on one side of the insertion block 6 away from the return spring 11.
[0026] This facilitates sliding the insertion block 6 into the insertion hole 7.
[0027] As Figures 1 to 4 shown, an extrusion block 13 is fixedly installed at the top of the rotating rod 8, and a rotating ring 14 is rotatably installed at a position corresponding to the extrusion block 13 on the outer side of the jacking rod 3. A trapezoidal block 15 is fixedly installed inside the rotating ring 14, and the trapezoidal block 15 is in extrusion contact with the extrusion block 13.
[0028] By rotating the rotating ring 14 to drive the trapezoidal block 15 to extrude the extrusion block 13 or not, the rotation and reset of the rotating rod 8 can be conveniently controlled.
[0029] As Figures 1 to 4 shown, the top of the piston rod 2 is not set to exceed the top end of the hydraulic jack body 1.
[0030] The entire piston rod 2 is accommodated inside the hydraulic jack body 1, and the shape of the piston rod 2 is limited by the outer shell of the hydraulic jack body 1 to prevent the piston rod 2 from being deformed or even broken. Only the jacking rod 3 needs to be replaced.
[0031] The present utility model provides a jacking rod for a hydraulic tool, and the specific working principle is as follows:
[0032] When the device is in use, when the jacking rod 3 is deformed or even broken, rotate the rotating ring 14 to cancel the extrusion of the trapezoidal block 15 on the extrusion block 13. Under the pulling of the return spring 11 on the insertion block 6, the insertion block 6 will be driven to slide along the limiting rod 9, and the insertion block 6 will be driven to slide out of the insertion hole 7. At this time, pull the jacking rod 3 upward to separate the piston rod 2 from the jacking rod 3;
[0033] When installing a new jacking rod 3, insert the jacking rod 3 into the internal storage groove 4, align the insertion block 6 with the insertion hole 7, rotate the rotating ring 14 to drive the trapezoidal block 15 to extrude the extrusion block 13, which will drive the rotating rod 8 to rotate. Furthermore, the bottom end of the rotating rod 8 will be driven to extrude one side of the insertion block 6, which will control the insertion block 6 to slide along the limiting rod 9, and the insertion block 6 will be driven to slide into the insertion hole 7 for the installation between the piston rod 2 and the jacking rod 3.
[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A push rod for a hydraulic tool, comprising a hydraulic jack body (1), characterized in that: A movable ejector rod is installed inside the hydraulic jack body (1). The ejector rod includes a piston rod (2) and a jacking rod (3). The piston rod (2) and the jacking rod (3) can be fixed to each other. A receiving groove (4) is formed at the top of the piston rod (2). The jacking rod (3) is slidably installed inside the receiving groove (4). Installation grooves (5) are symmetrically formed at the bottom of the jacking rod (3). Plug blocks (6) are slidably installed inside the installation grooves (5) corresponding to the jacking rod (3). A jacking hole (7) is formed at the position corresponding to the inside of the receiving groove (4) at the top end of the piston rod (2). The plug block (6) is slidably connected to the jacking hole (7).
2. The ejector rod for a hydraulic tool according to claim 1, wherein: A rotating rod (8) is rotatably installed at the middle position of the installation groove (5) corresponding to the bottom end of the jacking rod (3) through a shaft pin. Limiting rods (9) are symmetrically and fixedly installed at the positions corresponding to the plug blocks (6) at the bottom end of the jacking rod (3). Limiting holes (10) are formed at the positions corresponding to the limiting rods (9) on the plug blocks (6). The limiting holes (10) are slidably connected to the limiting rods (9). The bottom end of the rotating rod (8) is arranged between the two limiting rods (9) and presses against one side of the plug block (6).
3. The ejector rod for a hydraulic tool according to claim 2, characterized in that: A return spring (11) is sleeved on the outer side of the limiting rod (9). One side of the return spring (11) is fixedly connected to one side of the plug block (6), and the other side of the return spring (11) is fixedly connected to the jacking rod (3).
4. The ejector rod for a hydraulic tool according to claim 3, characterized in that: A chamfer (12) is formed on one side of the plug block (6) away from the return spring (11).
5. The ejector rod for a hydraulic tool according to claim 2, characterized in that: A pressing block (13) is fixedly installed at the top end of the rotating rod (8). A rotating ring (14) is rotatably installed at the position corresponding to the pressing block (13) on the outer side of the jacking rod (3). A trapezoidal block (15) is fixedly installed on the inner side of the rotating ring (14). The trapezoidal block (15) is in pressing contact with the pressing block (13).
6. The ejector rod for a hydraulic tool according to claim 1, characterized in that: The top of the piston rod (2) is not set to exceed the top end of the hydraulic jack body (1).