Anti-blocking piston rod with limiting function

Abstract

The utility model relates to the technical field of piston rods, in particular to an anti-blocking piston rod with a limiting function. The anti-blocking piston rod with the limiting function comprises a cylinder barrel, a piston rod body is arranged in the cylinder barrel, an end is arranged at the end of the piston rod body, and a protection assembly is arranged outside the piston rod body; the protective assembly comprises protective cloth, connecting strips are arranged at the two ends of the protective cloth, and the piston rod body is covered with a protective cylinder formed by adhering the two sides of the protective cloth through glue. According to the anti-blocking piston rod with the limiting function, through the arrangement of the protection assembly, in the using process, the piston rod body can be covered and protected through the protection cloth surrounding the outer portion of the piston rod body, and then dust particles in air can be prevented from being attached to the outer wall of the piston rod body in the using process; and dust accumulation and blockage are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rods, in particular to an anti-blocking piston rod with a limiting function. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is mostly used in oil cylinders and cylinder motion actuators. It is a moving component that moves frequently and has high technical requirements. Taking the hydraulic cylinder as an example, it is composed of a cylinder barrel, a piston rod, a piston, an end cover and an end cap.

[0003] When the piston rod reciprocates, its surface is easily stained with dust particles in the air. These dust particles will accumulate and clog the end cover as the piston rod reciprocates, which can easily cause damage to the sealing ring and cause oil leakage in the cylinder.

[0004] Therefore, it is necessary to provide a new anti-blocking piston rod with a limiting function to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an anti-blocking piston rod with a limiting function.

[0006] The anti-blocking piston rod with a limiting function provided by the utility model comprises: a cylinder, a piston rod body is arranged inside the cylinder, a terminal head is arranged at the end of the piston rod body, and a protective component is arranged outside the piston rod body;

[0007] The protective assembly includes a protective cloth, both ends of the protective cloth are provided with connecting strips, the two sides of the protective cloth are glued together to form a protective tube cover arranged on the outside of the piston rod body, and a groove is provided on the outer side of the butt edge of the protective cloth;

[0008] A support plate is provided on the outside of the connecting strip on one side through bolts, and two symmetrically distributed support half rings are provided on the outside of the connecting strip on the other side through bolts;

[0009] A limiting rod for limiting the position of the piston rod is installed outside the piston rod body.

[0010] Preferably, the support plate is fixedly mounted on the end head, a plurality of annular placement grooves are provided inside the support plate, and one side of the outer wall of the limiting rod abuts against the inside of the placement groove.

[0011] Preferably, two symmetrically distributed and slidably connected sliding half rings are provided on the outer wall of the cylinder, and the two sliding half rings are fixedly connected by bolts.

[0012] Preferably, a groove is also formed at a position of the inner part of the sliding half-ring opposite to the placement groove inside the support disk, and the other side of the outer wall of the limiting rod abuts against the inside of the groove.

[0013] Preferably, baffles are arranged on both sides of the outer wall of the limiting rod. The outer parts of the two baffles respectively abut against the opposite surfaces of the support disk and the sliding half-ring. Limit caps are screwed at both ends of the limiting rod, and the outer walls of the two limit caps respectively abut against the opposite surfaces of the corresponding support disk and the sliding half-ring.

[0014] Preferably, a plurality of the limiting rods are annularly distributed, and the limiting rods are located outside the protective cloth.

[0015] Preferably, the two support half-rings are symmetrically distributed and fixedly installed on the outside of the cylinder barrel through bolts. Chutes are formed at positions of the inside of the cylinder barrel opposite to the limiting rods, and the inner walls of the chutes are in sliding connection with the outer walls of the limiting rods by abutting.

[0016] Compared with the related art, the anti-blocking piston rod with a limiting function provided by the present utility model has the following beneficial effects:

[0017] 1. Through the arrangement of the protection assembly, during use, the protective cloth surrounding the outside of the piston rod body can cover and protect the piston rod body, thereby avoiding the adhesion of dust particles in the air to the outer wall of the piston rod body during use, causing phenomena such as dust accumulation and blockage.

[0018] 2. Since the protective cloth is formed into a cylindrical structure to cover and protect the outside of the piston rod body, compared with a fixed cylindrical structure, during subsequent use, it is not necessary to disassemble the connection part between the piston rod body and the outside to disassemble and replace the protective cloth. Therefore, the later maintenance and replacement can be made more convenient and fast.

[0019] 3. By arranging the limiting rods connected by sliding on the outside of the piston rod, during use, while the limiting rods extend and move along with the piston rod body, the rotation of the piston rod body can be limited by abutting against the inner wall of the chute. Therefore, the later use of the piston rod body can be made more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a preferred embodiment of the anti-blocking piston rod with a limiting function provided by the present utility model;

[0021] Figure 2 is Figure 1 a schematic structural diagram of the protection assembly and the connection of its components shown;

[0022] Figure 3 is Figure 2A schematic cross-sectional structure diagram of the protective assembly shown;

[0023] Figure 4 for Figure 3 The schematic diagram of the cross-sectional structure of the segment after being surrounded by the protective cloth is shown;

[0024] Figure 5 for Figure 3 A schematic diagram of a portion of the structure after being surrounded by the protective cloth shown;

[0025] Figure 6 for Figure 2 A schematic structural diagram of the support plate and its components is shown.

[0026] Numbers in the figure: 1. Cylinder; 2. Piston rod body; 3. Support plate; 31. Limit rod; 311. Baffle; 312. Limit cap; 32. Sliding half ring; 33. Placement groove; 4. Protection component; 41. Protection cloth; 411. Groove; 42. Connecting strip; 5. End; 6. Support half ring; 61. Slide groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0029] See also Figures 1 to 6 The embodiment of the utility model provides an anti-blocking piston rod with a limiting function, and the anti-blocking piston rod with a limiting function comprises: a cylinder 1, a piston rod body 2 is arranged inside the cylinder 1, a terminal 5 is arranged at the end of the piston rod body 2, and a protective component 4 is arranged outside the piston rod body 2.

[0030] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The protective assembly 4 includes a protective cloth 41, both ends of the protective cloth 41 are provided with connecting strips 42, and the protective tube covers formed by gluing the two sides of the protective cloth 41 are arranged on the outside of the piston rod body 2, and a groove 411 is opened on the outside of the docking edge of the protective cloth 41; a support plate 3 is provided on the outside of the connecting strip 42 on one side through bolts, and two symmetrically distributed supporting semi-rings 6 are provided on the outside of the connecting strip 42 on the other side through bolts.

[0031] It should be noted that when the piston rod body 2 extends, the protective cloth 41 can be pulled by the end 5 to move synchronously with the piston rod body 2. At this time, the protective cloth 41 surrounding the outside of the piston rod body 2 can be unfolded to cover and protect the piston rod body 2, thereby avoiding the adhesion of dust particles in the air to the outer wall of the piston rod body 2 during use, resulting in phenomena such as dust accumulation and blockage.

[0032] When the piston rod body 2 contracts and squeezes the protective cloth 41, the protective cloth 41 can be bent and contracted through the groove 411 on the outside of the docking end. Therefore, the formed protective cylinder can move synchronously with the piston rod body 2 more stably.

[0033] When the protective cloth 41 is damaged and needs to be replaced, the bolts between the connecting strip 42 and the support disc 3 and the support semi-ring 6 can be removed first. Then, the protective cloth 41 can be cut open, and then a new protective cloth 41 can be taken out. It can be wound around the outside of the piston rod body 2, and the two ends of the protective cloth 41 can be glued to form a protective cylinder sleeved on the outside of the piston rod body 2. Then, the connecting strip 42 can be connected to the corresponding support disc 3 and support semi-ring 6 through bolts in turn to realize the replacement and fixation of the protective cloth 41.

[0034] In the embodiment of the present utility model, please refer to Figure 1 、 Figure 2 and Figure 6 , a limiting rod 31 for limiting the piston rod is installed outside the piston rod body 2. The support disc 3 is fixedly installed on the end 5. A number of annularly distributed placements are provided inside the support disc 3, and one side of the outer wall of the limiting rod 31 abuts against the inside of the placement groove 33. There are two symmetrically distributed and slidably connected sliding semi-rings 32 on the outer wall of the cylinder barrel 1, and the two sliding semi-rings 32 are fixedly connected by bolts. Grooves 411 are also provided at the relative positions of the inside of the sliding semi-rings 32 and the inside of the placement groove 33 of the support disc 3, and the other side of the outer wall of the limiting rod 31 abuts against the inside of the groove 411. Flaps 311 are provided on both sides of the outer wall of the limiting rod 31, and the outer parts of the two flaps 311 abut against the opposite surfaces of the support disc 3 and the sliding semi-ring 32 respectively. Limiting caps 312 are screwed at both ends of the limiting rod 31, and the outer walls of the two limiting caps 312 abut against the opposite surfaces of the corresponding support disc 3 and the sliding semi-ring 32 respectively. A number of limiting rods 31 are annularly distributed, and the limiting rods 31 are located outside the protective cloth 41. Two support semi-rings 6 are symmetrically distributed and fixedly installed on the outside of the cylinder barrel 1 by bolts. Chute 61s are provided at the relative positions of the inside of the cylinder barrel 1 and the limiting rod 31, and the inner walls of the chute 61s abut against the outer wall of the limiting rod 31 and are slidably connected.

[0035] It should be noted that when the support disc 3 moves, the limit rod 31 can be driven to move synchronously. At this time, the moving limit rod 31 can slide in the chute 61 inside the support semi-ring 6. By the inner wall of the chute 61 abutting against the outer wall of the limit rod 31, the limit for the rotation of the limit rod 31 during sliding can be placed, and thus the limit for the rotation of the piston rod body 2 can be realized. Therefore, the later use of the piston rod body 2 can be made more stable;

[0036] And through the setting of the sliding semi-ring 32, when the limit rod 31 moves synchronously with the piston rod body 2, the limit rod 31 can drive the sliding semi-ring 32 to move synchronously outside the cylinder barrel 1. At this time, the moving sliding semi-ring 32 can support one end of the limit rod 31 away from the end head 5. Therefore, the stability of the end of the limit rod 31 can be improved;

[0037] And since the limit rod 31 is located outside the protective cloth 41, when the limit rod 31 is damaged later, the limit can be released by directly screwing the limit cap 312, and then the limit rod 31 can be directly pulled outwards, so that the installation of the limit rod 31 can be removed. Therefore, the later maintenance and replacement of the limit rod 31 can be made more convenient.

[0038] The working principle of the anti-blocking piston rod with a limiting function provided by the present utility model is as follows:

[0039] When the device is used later, when the piston rod body 2 extends, the connecting strip 42 in the protection assembly 4 can be driven to move synchronously through the end head 5 at the end. At this time, the connecting strip 42 can pull the protective cloth 41 surrounding the piston rod body 2 to move synchronously with it. At this time, the protective cloth 41 surrounding the piston rod body 2 can be unfolded to realize the covering and protection of the piston rod body 2. Therefore, during the use process, dust particles in the air can be prevented from adhering to the outer wall of the piston rod body 2, causing phenomena such as dust accumulation and blockage;

[0040] And during this process, the moving support disc 3 can drive the limit rod 31 to move synchronously. At this time, the moving limit rod 31 can slide in the chute 61 inside the support semi-ring 6. By the inner wall of the chute 61 abutting against the outer wall of the limit rod 31, the limit for the rotation of the limit rod 31 during sliding can be placed, and thus the limit for the rotation of the piston rod body 2 can be realized. Therefore, the later use of the piston rod body 2 can be made more stable;

[0041] During the later use, when the protective cloth 41 is damaged and needs to be replaced, the bolts between the connecting strip 42 and the support disc 3 and the support semi-ring 6 can be removed first, and then the protective cloth 41 can be cut open, so that the damaged protective cloth 41 can be taken out. Then, a brand-new protective cloth 41 can be taken out and wrapped around the outside of the piston rod body 2. Then, the two ends of the protective cloth 41 can be glued together, so that the protective cloth 41 can form a protective cylinder and be sleeved outside the piston rod body 2. Then, the connecting strip 42 can be connected to the corresponding support disc 3 and support semi-ring 6 in sequence through bolts, so as to realize the replacement and fixation of the protective cloth 41.

[0042] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A anti-blocking piston rod with a limiting function, comprising: Cylinder barrel (1), inside which there is a piston rod body (2), at the end of the piston rod body (2) there is a head (5), and outside the piston rod body (2) there is a protection assembly (4); It is characterized in that the protection assembly (4) includes a protection cloth (41), at both ends of the protection cloth (41) there are connecting strips (42), the two sides of the protection cloth (41) are adhesively bonded by glue to form a protection cylinder covering the outside of the piston rod body (2), and on the outside of the docking edge of the protection cloth (41) there is a groove (411); On the outside of one side of the connecting strip (42) there is a support disc (3) provided by bolts, and on the outside of the connecting strip (42) on the other side there are two symmetrically distributed support half-rings (6) provided by bolts; On the outside of the piston rod body (2) there is a limiting rod (31) for limiting the piston rod.

2. The anti-blocking piston rod with a limiting function according to claim 1, wherein, The support disc (3) is fixedly installed on the head (5), inside the support disc (3) there are several annularly distributed placement grooves, and one side of the outer wall of the limiting rod (31) abuts against the inside of the placement groove (33).

3. The anti-blocking piston rod with a limiting function according to claim 1, characterized in that, On the outer wall of the cylinder barrel (1) there are two symmetrically distributed and slidably connected sliding half-rings (32), and the two sliding half-rings (32) are fixedly connected by bolts.

4. The anti-blocking piston rod with a limiting function according to claim 3, characterized in that, At the relative part of the inside of the sliding half-ring (32) and the placement groove (33) inside the support disc (3) there is also a groove (411), and the other side of the outer wall of the limiting rod (31) abuts against the inside of the groove (411).

5. The anti-blocking piston rod with a limiting function according to claim 4, characterized in that, On both sides of the outer wall of the limiting rod (31) there are retaining pieces (311), the outside of the retaining pieces (311) on both sides respectively abuts against the opposite surfaces of the support disc (3) and the sliding half-ring (32), at both ends of the limiting rod (31) there are limiting caps (312) screwed by a threaded structure, and the outer walls of the limiting caps (312) on both sides respectively abut against the opposite surfaces of the corresponding support disc (3) and the sliding half-ring (32).

6. The anti-blocking piston rod with a limiting function according to claim 5, characterized in that, Several of the limiting rods (31) are annularly distributed, and the limiting rods (31) are located outside the protection cloth (41).

7. The anti-clogging piston rod with a limiting function according to claim 1, characterized in that, The two support half-rings (6) are symmetrically distributed and fixedly installed on the outside of the cylinder barrel (1) by bolts, at the relative parts of the inside of the cylinder barrel (1) and the limiting rods (31) there are sliding grooves (61), and the inner walls of the sliding grooves (61) abut against and are slidably connected with the outer walls of the limiting rods (31).

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