Anti-collision structure for piston rod of oil cylinder
By providing the first buffer spring and the second buffer spring on the cylinder piston rod, the impact force of the piston rod is absorbed, and the problem of collision between the piston rod and the cylinder barrel is solved, thereby achieving stable operation and extended life.
Patent Information
- Application Number
- CN202422454521.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The cylinder piston rod is prone to impact with the cylinder during movement, resulting in operational instability and shortening service life.
The first buffer spring and a plurality of second buffer springs are used to absorb the telescopic impact of the piston rod, and the buffer strength is adjusted through the sliding frame and the adjustment assembly to avoid direct impact of the piston rod and the cylinder barrel.
It improves the movement stability of the cylinder piston rod, extends the service life of the cylinder, and achieves flexible adjustment of buffer strength through the adjustment component.
Smart Images
Figure CN223136545U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of oil cylinders, and particularly relates to an anti-collision structure for the piston rod of an oil cylinder. Background Technique
[0002] An oil cylinder is a core actuating element in a hydraulic system, which can convert hydraulic energy into mechanical energy. An oil cylinder usually includes key components such as a cylinder barrel, a piston, a piston rod, a seal, and an end cover. It mainly realizes linear reciprocating or limited-angle swinging motion through the movement of the internal piston, so as to drive mechanical equipment to complete various complex operations.
[0003] During the operation of the oil cylinder, if the piston rod suddenly encounters heavy load or the load suddenly decreases, it will cause the piston rod to collide with the cylinder barrel, which will further lead to the instability of the operation of the oil cylinder, and may cause damage to the cylinder barrel and the piston rod, thus shortening the service life of the oil cylinder.
[0004] Therefore, we provide an anti-collision structure for the piston rod of an oil cylinder to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide an anti-collision structure for the piston rod of an oil cylinder, which absorbs the impact when the piston rod expands and contracts through the first buffer spring and multiple second buffer springs, and solves the problem that the piston rod of the existing oil cylinder is prone to collide with the cylinder body of the oil cylinder during movement, resulting in unstable operation of the oil cylinder and shortening the service life of the oil cylinder.
[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0007] The utility model is an anti-collision structure for the piston rod of an oil cylinder, which includes an oil cylinder main body, a sliding frame, a first buffer assembly, and a second buffer assembly; the sliding frame is installed outside the oil cylinder main body, the first buffer assembly and the second buffer assembly are both arranged inside the sliding frame, and two adjusting assemblies are arranged outside the oil cylinder main body, and the two adjusting assemblies are symmetrically distributed;
[0008] The sliding frame includes a fixing plate, the fixing plate is fixedly connected to the outside of the oil cylinder main body, a plurality of sliding rods are movably sleeved inside the fixing plate, one end of each of the plurality of sliding rods is fixedly connected to a first pressing plate, and the first pressing plate is fixedly connected to the outside of the piston rod of the oil cylinder main body, and the other end of each of the plurality of sliding rods is fixedly connected to a second pressing plate, and the second pressing plate is movably sleeved outside the oil cylinder main body;
[0009] The first buffer assembly includes a first buffer plate, the first buffer plate is movably sleeved outside the piston rod of the oil cylinder main body, a first buffer spring is fixedly connected between the first buffer plate and the oil cylinder main body, and the first buffer spring is movably sleeved outside the piston rod;
[0010] The second buffer assembly includes a second buffer plate, which is movably sleeved outside the cylinder body, and a plurality of second buffer springs are fixedly connected between the second buffer plate and the fixed plate.
[0011] The utility model is further configured that the adjusting assembly includes a threaded sleeve, which is rotatably connected inside the fixed plate. Screws are threadedly sleeved at both ends of the threaded sleeve, and the first buffer plate and the second buffer plate are respectively movably sleeved outside the two screws. Blocks are fixedly connected to the opposite ends of the two screws, and a knob is fixedly connected to the outside of the threaded sleeve.
[0012] The utility model is further configured that a scale is fixedly connected to the outside of the first buffer plate, a sliding sleeve is fixedly connected to the outside of the cylinder body, and the scale is movably sleeved inside the sliding sleeve, and a reading port is formed inside the sliding sleeve.
[0013] The utility model is further configured that both the first buffer plate and the second buffer plate are slidably connected to the outside of a plurality of sliding rods, and a plurality of second buffer springs are respectively movably sleeved outside the plurality of sliding rods.
[0014] The utility model is further configured that a first buffer pad is fixedly connected to the surface of the first buffer plate facing the first pressing plate, and a second buffer pad is fixedly connected to the side of the second buffer plate facing the second pressing plate.
[0015] The utility model is further configured that a first protective sleeve is fixedly connected between the first buffer plate and the cylinder body, and the first buffer spring is located inside the first protective sleeve. A second protective sleeve is fixedly connected between the fixed plate and the second buffer plate, and a plurality of second buffer springs are all located inside the second protective sleeve.
[0016] The utility model is further configured that a plurality of balls are inlaid on the inner side of the second pressing plate, and the plurality of balls are in contact with the outer side of the cylinder body.
[0017] The utility model is further configured that both the first protective sleeve and the second protective sleeve are annular rubber sleeves, and both the first protective sleeve and the second protective sleeve are hollow structures.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, the piston rod drives the first pressing plate to press the first buffer plate, and then the impact of the piston rod can be absorbed by the first buffer spring. When the piston rod of the cylinder body extends, the piston rod drives the first pressing plate to move, and then drives the second pressing plate to slide along the cylinder body through a plurality of sliding rods, and then drives the second pressing plate to compress a plurality of second buffer springs, which can play a role in absorbing impact, thereby avoiding direct collision between the piston rod of the cylinder body and the shell of the cylinder body, and further making the movement of the piston rod more stable and prolonging the service life of the whole cylinder.
[0020] 2. By rotating the knob of the present utility model, the threaded sleeve can be driven to rotate within the fixed plate. Then, under the action of the thread, the two screw rods can move within the threaded sleeve, and subsequently, the first buffer plate and the second buffer plate can be driven to squeeze the first buffer spring and the second buffer spring respectively, thereby realizing the adjustment of the buffer strength.
[0021] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.
[0024] Figure 2 It is a cross-sectional structural schematic diagram of the first protective sleeve and the second protective sleeve.
[0025] Figure 3 It is a structural schematic diagram of the second pressing plate.
[0026] Figure 4 For Figure 2 The enlarged structural schematic diagram at position A in
[0027] In the drawings, the list of components represented by each reference numeral is as follows:
[0028] 100 - oil cylinder body, 200 - sliding frame, 201 - fixed plate, 202 - sliding rod, 203 - first pressing plate, 204 - second pressing plate, 205 - ball, 300 - first buffer assembly, 301 - first buffer plate, 302 - first buffer spring, 303 - first buffer pad, 304 - first protective sleeve, 400 - second buffer assembly, 401 - second buffer plate, 402 - second buffer spring, 403 - second buffer pad, 404 - second protective sleeve, 500 - adjustment assembly, 501 - threaded sleeve, 502 - screw rod, 503 - stop block, 504 - knob, 505 - scale, 506 - sliding sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.
[0030] Embodiment 1. Please refer to Figures 1-3 , the present utility model is an anti-collision structure for the piston rod of an oil cylinder, which includes an oil cylinder main body 100, a sliding frame 200, a first buffer assembly 300 and a second buffer assembly 400; the sliding frame 200 is installed outside the oil cylinder main body 100, the first buffer assembly 300 and the second buffer assembly 400 are both arranged inside the sliding frame 200, and two adjusting assemblies 500 are arranged outside the oil cylinder main body 100, and the two adjusting assemblies 500 are symmetrically distributed;
[0031] The sliding frame 200 includes a fixing plate 201, the fixing plate 201 is fixedly connected to the outside of the oil cylinder main body 100, a plurality of sliding rods 202 are movably sleeved inside the fixing plate 201, one end of the plurality of sliding rods 202 is fixedly connected to a first pressing plate 203, and the first pressing plate 203 is fixedly connected to the outside of the piston rod of the oil cylinder main body 100, and the other end of the plurality of sliding rods 202 is fixedly connected to a second pressing plate 204, and the second pressing plate 204 is movably sleeved outside the oil cylinder main body 100;
[0032] The first buffer assembly 300 includes a first buffer plate 301, the first buffer plate 301 is movably sleeved outside the piston rod of the oil cylinder main body 100, a first buffer spring 302 is fixedly connected between the first buffer plate 301 and the oil cylinder main body 100, and the first buffer spring 302 is movably sleeved outside the piston rod;
[0033] The second buffer assembly 400 includes a second buffer plate 401, the second buffer plate 401 is movably sleeved outside the oil cylinder main body 100, and a plurality of second buffer springs 402 are fixedly connected between the second buffer plate 401 and the fixing plate 201. By arranging the first buffer spring 302, the impact when the piston rod of the oil cylinder main body 100 retracts can be absorbed, and by the second buffer spring 402, the impact when the piston rod extends can be absorbed, so as to avoid the direct collision between the piston rod of the oil cylinder main body 100 and the housing of the oil cylinder main body 100, and further make the movement of the piston rod more stable and extend the service life of the entire oil cylinder.
[0034] Specifically, a first buffer pad 303 is fixedly connected to the side of the first buffer plate 301 facing the first pressing plate 203, and a second buffer pad 403 is fixedly connected to the side of the second buffer plate 401 facing the second pressing plate 204. The first buffer pad 303 and the second buffer pad 403 provided can reduce the impact on the first buffer plate 301 and the second buffer plate 401, enhancing the buffering performance of the structure;
[0035] A first protective sleeve 304 is fixedly connected between the first buffer plate 301 and the oil cylinder body 100, and the first buffer spring 302 is located inside the first protective sleeve 304. A second protective sleeve 404 is fixedly connected between the fixing plate 201 and the second buffer plate 401, and multiple second buffer springs 402 are all located inside the second protective sleeve 404. The first protective sleeve 304 provided can prevent sundries from getting stuck inside the first buffer spring 302 or the second buffer spring 402, ensuring that the first buffer spring 302 and the second buffer spring 402 can play their buffering roles normally;
[0036] A plurality of balls 205 are inlaid on the inner side of the second pressing plate 204, and the plurality of balls 205 are in contact with the outer side of the oil cylinder body 100. The plurality of balls 205 can reduce the friction between the second pressing plate 204 and the oil cylinder body 100.
[0037] Furthermore, both the first buffer plate 301 and the second buffer plate 401 are slidably connected to the outside of a plurality of sliding rods 202, and a plurality of second buffer springs 402 are respectively movably sleeved on the outside of the plurality of sliding rods 202;
[0038] Both the first protective sleeve 304 and the second protective sleeve 404 are annular rubber sleeves, and both the first protective sleeve 304 and the second protective sleeve 404 are hollow structures. The hollow first protective sleeve 304 and second protective sleeve 404 can further enhance the buffering performance of the structure.
[0039] The operation process of this embodiment is as follows: When the piston rod of the oil cylinder body 100 contracts, the piston rod drives the first pressing plate 203 to press the first buffer plate 301, and then the first buffer spring 302 can absorb the impact of the piston rod. When the piston rod of the oil cylinder body 100 extends, the piston rod drives the first pressing plate 203 to move, and then drives the second pressing plate 204 to slide along the oil cylinder body 100 through a plurality of sliding rods 202. When the second pressing plate 204 contacts the second buffer plate 401, a plurality of second buffer springs 402 can play a role in absorbing the impact.
[0040] Example 2, please refer to Figure 4, on the basis of the first specific embodiment, the adjusting assembly 500 includes a threaded sleeve 501 rotatably connected to the inside of the fixing plate 201. Both ends of the threaded sleeve 501 are threadedly sleeved with screw rods 502, and the first buffer plate 301 and the second buffer plate 401 are respectively movably sleeved outside the two screw rods 502. One end of each of the two screw rods 502 facing away from each other is fixedly connected with a stopper 503. An adjusting knob 504 is fixedly connected to the outside of the threaded sleeve 501. By rotating the adjusting knob 504, the compression degrees of the first buffer spring 302 and the second buffer spring 402 can be adjusted, so that the buffer strength of this structure can be adjusted.
[0041] Specifically, a scale 505 is fixedly connected to the outside of the first buffer plate 301. A sliding sleeve 506 is fixedly connected to the outside of the oil cylinder body 100, and the scale 505 is movably sleeved inside the sliding sleeve 506. A reading port is formed inside the sliding sleeve 506.
[0042] The operation process of this embodiment is as follows: When it is necessary to adjust the buffer strength, rotating the adjusting knob 504 can drive the threaded sleeve 501 to rotate inside the fixing plate 201. Then, under the action of the thread, the two screw rods 502 can move inside the threaded sleeve 501, and then the first buffer plate 301 and the second buffer plate 401 can be driven to squeeze the first buffer spring 302 and the second buffer spring 402 respectively.
[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0044] The above-disclosed preferred embodiments of the present invention are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.
Claims
1. An anti-collision structure for the piston rod of an oil cylinder, comprising an oil cylinder body (100), a sliding frame (200), a first buffer assembly (300) and a second buffer assembly (400); characterized in that: The sliding frame (200) is installed outside the cylinder body (100). The first buffer assembly (300) and the second buffer assembly (400) are both arranged inside the sliding frame (200). Two adjusting assemblies (500) are arranged outside the cylinder body (100), and the two adjusting assemblies (500) are symmetrically distributed; The sliding frame (200) includes a fixing plate (201). The fixing plate (201) is fixedly connected to the outside of the cylinder body (100). A plurality of sliding rods (202) are movably sleeved inside the fixing plate (201). One ends of the plurality of sliding rods (202) are fixedly connected to a first pressing plate (203), and the first pressing plate (203) is fixedly connected to the outside of the piston rod of the cylinder body (100). The other ends of the plurality of sliding rods (202) are fixedly connected to a second pressing plate (204), and the second pressing plate (204) is movably sleeved outside the cylinder body (100); The first buffer assembly (300) includes a first buffer plate (301). The first buffer plate (301) is movably sleeved outside the piston rod of the cylinder body (100). A first buffer spring (302) is fixedly connected between the first buffer plate (301) and the cylinder body (100), and the first buffer spring (302) is movably sleeved outside the piston rod; The second buffer assembly (400) includes a second buffer plate (401). The second buffer plate (401) is movably sleeved outside the cylinder body (100). A plurality of second buffer springs (402) are fixedly connected between the second buffer plate (401) and the fixing plate (201).
2. The anti-collision structure of an oil cylinder piston rod according to claim 1, characterized in that, The adjusting assembly (500) includes a threaded sleeve (501). The threaded sleeve (501) is rotatably connected inside the fixing plate (201). Screws (502) are threadedly sleeved at both ends of the threaded sleeve (501), and the first buffer plate (301) and the second buffer plate (401) are respectively movably sleeved outside the two screws (502). Blocks (503) are fixedly connected to the opposite ends of the two screws (502). A knob (504) is fixedly connected to the outside of the threaded sleeve (501).
3. The anti-collision structure for the cylinder piston rod according to claim 1, wherein A scale (505) is fixedly connected to the outside of the first buffer plate (301). A sliding sleeve (506) is fixedly connected to the outside of the cylinder body (100), and the scale (505) is movably sleeved inside the sliding sleeve (506). A reading port is formed inside the sliding sleeve (506).
4. The anti-collision structure for the piston rod of an oil cylinder according to claim 1, characterized in that The first buffer plate (301) and the second buffer plate (401) are both slidably connected to the outside of the plurality of sliding rods (202), and the plurality of second buffer springs (402) are respectively movably sleeved outside the plurality of sliding rods (202).
5. The anti-collision structure of an oil cylinder piston rod according to claim 1, wherein, A first buffer pad (303) is fixedly connected to the side of the first buffer plate (301) facing the first pressing plate (203). A second buffer pad (403) is fixedly connected to the side of the second buffer plate (401) facing the second pressing plate (204).
6. The anti-collision structure for the oil cylinder piston rod according to claim 1, characterized in that, A first protective sleeve (304) is fixedly connected between the first buffer plate (301) and the cylinder body (100), and the first buffer spring (302) is located inside the first protective sleeve (304). A second protective sleeve (404) is fixedly connected between the fixed plate (201) and the second buffer plate (401), and multiple second buffer springs (402) are all located inside the second protective sleeve (404).
7. A collision prevention structure for the piston rod of an oil cylinder according to claim 1, characterized in that, A plurality of balls (205) are embedded in the inner side of the second pressing plate (204), and the plurality of balls (205) are in contact with the outer side of the cylinder body (100).
8. A collision prevention structure for the piston rod of an oil cylinder according to claim 6, characterized in that, Both the first protective sleeve (304) and the second protective sleeve (404) are annular rubber sleeves, and both the first protective sleeve (304) and the second protective sleeve (404) are hollow structures.