Preheating equipment for surface strengthening of piston rod of expansion hydraulic cylinder

Abstract

The utility model discloses preheating equipment for strengthening the surface of a piston rod of an expansion hydraulic cylinder, which relates to the field of piston rod preheating equipment and comprises a preheating cylinder, support legs are arranged at the bottom of the preheating cylinder, a threaded groove is reserved on the outer ring of the preheating cylinder, and a top cover is movably mounted at the top of the preheating cylinder through an arc-shaped block. The motor is started to drive the driving shaft and the linkage shaft to rotate synchronously, the top cover rotates synchronously, the arc-shaped block rotates and moves along with the threaded groove, then the top cover is driven to be movably unfolded, the position of the top cover moves and ascends to drive the linkage shaft to ascend synchronously, at the moment, the chassis moves synchronously and is exposed, and a piston rod is conveniently inserted into a mounting hole in the chassis. A leakage hole in the limiting disc moves downwards and sleeves the piston rod to limit the piston rod, the motor rotates reversely to drive the top cover to descend, the chassis and the linkage shaft descend to enter the preheating cylinder to conduct preheating operation of the piston rod conveniently, and therefore opening and closing operation of the top cover is safe, easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of piston rod preheating equipment, specifically to a preheating equipment for surface strengthening of piston rods in expansion and contraction hydraulic cylinders. Background Technology

[0002] In an expansion and contraction hydraulic cylinder, one end of the piston rod is connected to the piston, and the other end is connected to a rotating component or other mechanical device through a connecting component. The piston rod reciprocates under the action of hydraulic pressure, thereby realizing the function of the hydraulic cylinder. The piston rod is usually made of high-strength steel, and the purpose of the heat treatment is to give the piston rod a comprehensive mechanical property with a good match of strength, hardness, plasticity and toughness.

[0003] The existing heat treatment process still has the following problems: the existing heat treatment equipment requires heat treatment of the piston rod individually, which results in a long heat treatment time and low processing efficiency. At the same time, the heat treatment device may require manual approach when the device cover is opened or closed, which is inconvenient to operate.

[0004] Therefore, it is necessary to invent a preheating device for strengthening the surface of the piston rod of an expansion and contraction hydraulic cylinder to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a preheating device for surface strengthening of piston rods in expansion and contraction hydraulic cylinders, in order to solve the problems mentioned in the background art. Existing heat treatment equipment requires heat treatment of individual piston rods, which results in long heat treatment time and low processing efficiency. At the same time, the heat treatment device may require manual approach when the device cover is opened or closed, which is inconvenient to operate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a preheating device for surface strengthening of piston rod of expansion and contraction hydraulic cylinder, including a preheating cylinder, a support leg provided at the bottom of the preheating cylinder, a threaded groove reserved on the outer ring of the preheating cylinder, and a top cover movably mounted on the top of the preheating cylinder through an arc-shaped block. The top cover and the preheating cylinder are rotatably connected by a driving component, and the arc-shaped block is threadedly connected to the threaded groove. The preheating cylinder and the arc-shaped block are limited by a limiting component, and a placement component is movably mounted below the top cover.

[0007] Preferably, there are two arc-shaped blocks, and the two arc-shaped blocks are symmetrically fixed to both sides of the lower end of the top cover with reference to the central axis of the top cover as the axis of symmetry.

[0008] Preferably, the limiting component includes an annular groove that communicates with the threaded groove, and an annular block is rotatably connected to the inner wall of the annular groove. Limiting blocks are fixedly connected to the two side walls of the annular block. The limiting blocks and the limiting groove reserved inside the arc-shaped block are slidably connected. The upper and lower ends of the limiting groove are closed, ensuring that the top cover moves normally while the arc-shaped block and the threaded groove are connected without falling off.

[0009] Preferably, the drive assembly includes a motor fixedly connected to the bottom wall of the preheating cylinder, and the output shaft of the motor is drivenly connected to a drive shaft, and the outer ring of the drive shaft is drivenly fitted with a linkage shaft, the upper end of the linkage shaft being fixedly connected to the bottom wall of the top cover, so as to facilitate driving the top cover to rotate and open.

[0010] Preferably, the internal part of the linkage shaft has a sliding groove, which is composed of a columnar groove and a square groove connected to the columnar groove. The inner wall of the columnar groove is in contact with the outer wall of the drive shaft to achieve a sliding connection. The protrusion inside the vertical square groove is fixedly connected to the upper end side wall of the drive shaft to achieve a sliding connection. When the top cover moves up and down, the drive shaft and the linkage shaft that are movably connected can move smoothly. At the same time, the rotation of the drive shaft always drives the linkage shaft to rotate.

[0011] Preferably, the placement assembly includes a chassis fixedly fitted onto the outer ring of the linkage shaft. The chassis has a pre-drilled placement hole, into which a piston rod is inserted. A threaded rod is rotatably connected to the top wall of the chassis, extending above the top cover and rotatably connected to it. The threaded rod is also threadedly connected to a limiting plate movably fitted onto the outer ring of the linkage shaft. The limiting plate has a through-hole aligned with the placement hole, which is slidably connected to the piston rod, facilitating placement. Twisting the threaded rod causes the limiting plate to move up and down, and subsequently, the limiting plate moves away from the piston rod, facilitating its removal.

[0012] Preferably, the inner wall of the through hole reserved in the central area of ​​the limiting plate is attached to the outer wall of the linkage shaft to achieve a sliding connection between the upper and lower parts, and a block is fixedly connected to the inner wall of the through hole. The block and the vertical groove reserved inside the linkage shaft are in a sliding connection between the upper and lower parts to ensure the stability of the upper and lower movement of the limiting plate.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This invention features a starter motor that drives the drive shaft and synchronous linkage shaft to rotate, causing the top cover to rotate synchronously. The rotation of the arc-shaped block and the movement of the threaded groove cause the top cover to unfold. The top cover moves and rises, causing the linkage shaft to rise synchronously. At this time, the chassis moves synchronously and is exposed, making it easy to insert the piston rod into the mounting hole inside the chassis. The internal hole of the limiting plate moves straight down and fits around the piston rod to limit its movement. The motor rotates in the opposite direction, causing the top cover to fall. The chassis synchronous linkage shaft falls and enters the preheating cylinder to facilitate the preheating of the piston rod. This makes the opening and closing of the top cover safer and simpler. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional view of the overall structure of the top cover of this utility model after it is unfolded.

[0018] Figure 3 This is an exploded view of the overall structure of this utility model;

[0019] Figure 4 This is an exploded view of the internal structure of the linkage shaft of this utility model (partially cut out).

[0020] Figure 5 This is a perspective view of the connection structure of the placement component of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Preheating cylinder; 2. Support leg; 3. Top cover; 4. Threaded groove; 5. Arc block; 6. Limiting assembly; 601. Annular groove; 602. Annular block; 603. Limiting block; 604. Limiting groove; 7. Drive assembly; 701. Motor; 702. Drive shaft; 703. Protrusion; 704. Linkage shaft; 705. Slide groove; 8. Placement assembly; 801. Chassis; 802. Limiting plate; 803. Threaded rod; 804. Square block; 805. Vertical groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-5The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder shown includes a preheating cylinder 1, a support leg 2 at the bottom of the preheating cylinder 1, a threaded groove 4 reserved on the outer ring of the preheating cylinder 1, and a top cover 3 movably installed on the top of the preheating cylinder 1 through an arc-shaped block 5. The top cover 3 and the preheating cylinder 1 are rotatably connected through a drive assembly 7, and the arc-shaped block 5 is threadedly connected to the threaded groove 4. The preheating cylinder 1 and the arc-shaped block 5 are limited by a limiting assembly 6, and a placement assembly 8 is movably installed below the top cover 3.

[0025] To ensure the secure connection between the top cover 3 and the preheating cylinder 1 and to prevent it from falling off, two arc-shaped blocks 5 are provided. The two arc-shaped blocks 5 are symmetrically fixed to both sides of the lower end of the top cover 3 with reference to the central axis of the top cover 3. In this way, the rotation of the top cover 3 causes the arc-shaped blocks 5 to rotate, causing the top cover 3 to move and open. The limiting component 6 includes an annular groove 601 that is connected to the threaded groove 4. An annular block 602 is rotatably connected to the inner wall of the annular groove 601. Limiting blocks 603 are fixedly connected to the two side walls of the annular block 602. The limiting blocks 603 and the limiting groove 604 reserved inside the arc-shaped block 5 are slidably connected. The upper and lower ends of the limiting groove 604 are closed, ensuring that the top cover 3 can move normally while the arc-shaped block 5 and the threaded groove 4 are connected in a non-detachable manner.

[0026] To drive the top cover 3 to rotate, the drive assembly 7 includes a motor 701 fixedly connected to the bottom wall of the preheating cylinder 1, and the output shaft of the motor 701 is driven to connect to the drive shaft 702. The outer ring of the drive shaft 702 is driven to install a linkage shaft 704. The upper end of the linkage shaft 704 is fixedly connected to the bottom wall of the top cover 3, which facilitates driving the top cover 3 to rotate and causing the arc block 5 to rotate and move up and down, thereby realizing the lifting and lowering of the top cover 3.

[0027] To ensure that the top cover 3 does not stop rotating during the lifting and lowering process, the internal part of the linkage shaft 704 is reserved with a sliding groove 705. The sliding groove 705 consists of a columnar groove and a square groove connected to the columnar groove. The inner wall of the columnar groove is attached to the outer wall of the drive shaft 702 to achieve a sliding connection. The protrusion 703 inside the vertical square groove is fixedly connected to the upper end side wall of the drive shaft 702 and has a sliding connection. When the top cover 3 moves up and down, the drive shaft 702 and the linkage shaft 704, which are movably connected, move smoothly. At the same time, the rotation of the drive shaft 702 always drives the linkage shaft 704 to rotate.

[0028] The placement assembly 8 includes a chassis 801 fixedly mounted on the outer ring of the linkage shaft 704. The chassis 801 has a pre-drilled mounting hole, into which a piston rod is inserted. A threaded rod 803 is rotatably connected to the top wall of the chassis 801. The threaded rod 803 extends above the top cover 3 and is rotatably connected to the top cover 3. The threaded rod 803 is threadedly connected to a limiting plate 802 movably mounted on the outer ring of the linkage shaft 704. The limiting plate 802 has a through-hole that is positioned opposite the mounting hole. The through-hole is slidably connected to the piston rod. The piston rod is placed conveniently, and the twisting threaded rod 803 drives the limiting plate 802 to move up and down. Subsequently, the limiting plate 802 moves away from the piston rod, making it easy to remove the piston rod later. At the same time, the inner wall of the through hole reserved in the central area of ​​the limiting plate 802 is attached to the outer wall of the linkage shaft 704 to achieve a sliding connection between the upper and lower parts. A block 804 is fixedly connected to the inner wall of the through hole. The block 804 and the vertical groove 805 reserved inside the linkage shaft 704 are in a sliding connection between the upper and lower parts, ensuring the stability of the upper and lower parts of the limiting plate 802 and ensuring that the limiting plate 802 moves straight up and down.

[0029] Working principle: When using the preheating equipment for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder, firstly, the motor 701 is started to drive the drive shaft 702 to rotate, and the linkage shaft 704 rotates synchronously, driving the top cover 3 to rotate. The arc-shaped block 5 fixedly connected to the lower end of the top cover 3 rotates and moves in position with the threaded groove 4, thereby causing the top cover 3 to move and unfold. The drive shaft 702 and the linkage shaft 704 are in a sliding connection. In this way, the position of the top cover 3 moves and rises, driving the linkage shaft 704 to rise synchronously. The position of the chassis 801 fixedly connected to the outer ring of the linkage shaft 704 moves synchronously and is exposed (refer to...). Figure 2 This allows the piston rod to be inserted into the mounting hole inside the chassis 801. Twisting the threaded rod 803 causes the limiting plate 802 to descend. The internal hole of the limiting plate 802 descends and is fitted onto the outside of the piston rod to limit its movement. The motor 701 rotates in the opposite direction, causing the top cover 3 to descend. The synchronous linkage shaft 704 of the chassis 801 descends into the preheating cylinder 1 to facilitate the preheating of the piston rod.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A preheating device for surface strengthening of piston rod of expansion and contraction hydraulic cylinder, comprising a preheating cylinder (1), characterized in that, The preheating cylinder (1) is provided with a support leg (2) at the bottom. The preheating cylinder (1) has a threaded groove (4) reserved on the outer ring. The top of the preheating cylinder (1) is movably installed with a top cover (3) through an arc block (5). The top cover (3) and the preheating cylinder (1) are rotatably connected through a drive assembly (7). The arc block (5) and the threaded groove (4) are threadedly connected. The preheating cylinder (1) and the arc block (5) are limited by a limiting assembly (6). A placement assembly (8) is movably installed below the top cover (3).

2. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 1, characterized in that, The arc-shaped block (5) consists of two blocks, and the two arc-shaped blocks (5) are symmetrically fixed to both sides of the lower end of the top cover (3) with reference to the central axis of the top cover (3).

3. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 2, characterized in that, The limiting component (6) includes an annular groove (601) that is connected to the threaded groove (4), and an annular block (602) is rotatably connected to the inner wall of the annular groove (601). Limiting blocks (603) are fixedly connected to the two side walls of the annular block (602). The limiting block (603) and the limiting groove (604) reserved inside the arc-shaped block (5) are slidably connected. The upper and lower ends of the limiting groove (604) are both closed.

4. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 2, characterized in that, The drive assembly (7) includes a motor (701) fixedly connected to the bottom wall of the preheating cylinder (1), and the output shaft of the motor (701) is driven to a drive shaft (702), and the outer ring of the drive shaft (702) is driven to a linkage shaft (704), the upper end of the linkage shaft (704) being fixedly connected to the bottom wall of the top cover (3).

5. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 4, characterized in that, The linkage shaft (704) has a reserved sliding groove (705) inside. The sliding groove (705) is composed of a columnar groove and a square groove connected to the columnar groove. The inner wall of the columnar groove is attached to the outer wall of the drive shaft (702) to achieve a sliding connection. The protrusion (703) inside the vertical square groove is fixedly connected to the upper end side wall of the drive shaft (702) to achieve a sliding connection.

6. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 5, characterized in that, The placement assembly (8) includes a chassis (801) fixedly fitted on the outer ring of the linkage shaft (704). The chassis (801) has a pre-drilled mounting hole, and a piston rod is inserted into the mounting hole. A threaded rod (803) is rotatably connected to the top wall of the chassis (801). The threaded rod (803) extends to the top cover (3) and is rotatably connected to the top cover (3). The threaded rod (803) is threadedly connected to a limiting plate (802) movably fitted on the outer ring of the linkage shaft (704). The limiting plate (802) has a through hole that is vertically connected and is opposite to the mounting hole. The through hole is slidably connected to the piston rod.

7. The preheating device for surface strengthening of the piston rod of the expansion and contraction hydraulic cylinder according to claim 6, characterized in that, The inner wall of the through hole reserved in the central area of ​​the limiting plate (802) is attached to the outer wall of the linkage shaft (704) to achieve a sliding connection between the upper and lower parts. A block (804) is fixedly connected to the inner wall of the through hole. The block (804) and the vertical groove (805) reserved inside the linkage shaft (704) are in a sliding connection between the upper and lower parts.

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