Anti-collision bottom hydraulic oil cylinder

Abstract

The utility model relates to hydraulic pressure oil cylinder technical field discloses a kind of anti-collision bottom hydraulic pressure oil cylinders, including cylinder body, the right end of cylinder body is equipped with end cover, the left end of cylinder body is equipped with bottom cover, the bottom cover and end cover four corners are connected by pull rod, the piston is slidably connected in the cylinder body.The utility model discloses a kind of anti-collision bottom hydraulic pressure oil cylinders, through the linkage of slide base, connecting rod and connecting seat in protection mechanism, cooperate the buffer spring of the slide base both sides being set in the outer periphery of pull rod, when piston rod telescopes to limit position or is impacted by outside, utilize the elastic deformation of buffer spring to absorb impact force, avoid piston directly impacting cylinder end, effectively prolong the service life of oil cylinder, the heat generated in working process can be dissipated in time by the multiple heat dissipation fins of the outer periphery of cylinder body, prevent the influence oil cylinder performance due to overheating;The protection mechanism of the outer periphery of piston rod can form the outer periphery protection of piston rod, reduce the risk of bending or damage due to external force.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an anti-collision bottom hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders, as core actuators in hydraulic systems, convert hydraulic energy into mechanical energy to achieve linear reciprocating or oscillating motion. They are widely used in engineering machinery, metallurgical equipment, machine tool manufacturing, shipbuilding, and aerospace. They mainly consist of a cylinder body, piston, piston rod, end caps, and bottom cap. The piston is driven by the pressure difference of hydraulic oil within the cylinder's internal cavity, which in turn drives the piston rod to output force and displacement. They are characterized by simple structure, high output force, smooth transmission, and fast response speed, making them a key device for power transmission and control in modern industry.

[0003] However, traditional hydraulic cylinders have some problems that urgently need to be solved during long-term use. On the one hand, when the piston rod drives the piston to its limit position, the piston is prone to rigid collision with the bottom of the cylinder or the end cover. This not only generates significant noise and vibration, but also causes wear, deformation, or even damage to components such as the piston and cylinder due to impact loads, severely shortening the service life of the cylinder. On the other hand, as the main force-bearing component, the piston rod lacks effective external support and protection during extension or retraction, making it prone to bending or displacement due to external forces, affecting transmission accuracy and stability. Utility Model Content

[0004] The main objective of this invention is to provide a hydraulic cylinder with anti-collision bottom, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hydraulic cylinder with anti-collision bottom, including a cylinder body, an end cover installed at the right end of the cylinder body, a bottom cover installed at the left end of the cylinder body, the bottom cover and the end cover being connected at the four corners by tie rods, a piston being slidably connected inside the cylinder body, the middle part of the piston being fixedly connected to one end of the piston rod, the outer periphery of the piston rod being slidably connected to the middle part of the end cover, and a protective mechanism being provided on the outer periphery of the piston rod;

[0006] The protection mechanism includes a slide block, a connecting rod, and a connecting seat. The slide block is sleeved on the outer periphery of the cylinder body. The four corners of the slide block are slidably connected to the outer periphery of the pull rod. The four corners of the slide block are installed at one end of the connecting rod. The outer periphery of the connecting rod is slidably connected to the four corners of the end cap. The other end of the connecting rod is installed at the four corners of the connecting seat. The middle part of the connecting seat is installed at the end of the piston rod away from the cylinder body.

[0007] Preferably, the cylinder body is provided with multiple heat dissipation fins on its outer periphery.

[0008] Preferably, a fisheye connector is installed at the other end of the piston rod.

[0009] Preferably, buffer springs are installed on the left and right sides of the slide block, and the buffer springs are sleeved on the outer periphery of the pull rod.

[0010] Preferably, the buffer spring is provided with a protective sleeve on its outer periphery.

[0011] Preferably, an elastic buffer pad is installed on the side of the piston near the bottom cover.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Through the linkage of the slide, connecting rod and connecting seat in the protection mechanism, and with the buffer springs sleeved on both sides of the slide around the outer periphery of the connecting rod, the elastic deformation of the buffer springs can absorb the impact force when the piston rod extends or retracts to its limit position or is subjected to external impact, thus preventing the piston from directly hitting the end of the cylinder and effectively extending the service life of the hydraulic cylinder.

[0014] 2. Multiple heat dissipation fins on the outer periphery of the cylinder can dissipate the heat generated during operation in a timely manner, preventing overheating from affecting the performance of the cylinder; the protective mechanism on the outer periphery of the piston rod can provide peripheral protection for the piston rod, reducing the risk of bending or damage due to external forces. At the same time, the fisheye connector at the end of the piston rod facilitates connection with external components, improving ease of use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an anti-collision bottom hydraulic cylinder according to the present invention;

[0016] Figure 2 This is a schematic diagram of the protective mechanism structure of a hydraulic cylinder with anti-collision bottom according to the present invention;

[0017] Figure 3 This is a schematic diagram of the buffer spring installation structure of an anti-collision bottom hydraulic cylinder according to this utility model.

[0018] In the diagram: 1. Cylinder block; 2. Bottom cover; 3. End cover; 4. Tie rod; 5. Piston rod; 6. Protection mechanism; 601. Slide seat; 602. Connecting rod; 603. Connecting seat; 7. Buffer spring; 8. Heat dissipation fins; 9. Fisheye connector. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-3As shown, an anti-collision hydraulic cylinder includes a cylinder body 1, an end cap 3 installed at the right end of the cylinder body 1, and a bottom cap 2 installed at the left end of the cylinder body 1. The bottom cap 2 and the end cap 3 are connected at their four corners by tie rods 4. A piston is slidably connected inside the cylinder body 1. The middle part of the piston is fixedly connected to one end of the piston rod 5, and the outer periphery of the piston rod 5 is slidably connected to the middle part of the end cap 3. A protective mechanism 6 is provided on the outer periphery of the piston rod 5. The cylinder body 1, as the main component of the cylinder, is closed at both ends by the bottom cap 2 and the end cap 3, respectively, and the two are stably connected by the tie rods 4 at the four corners to form the overall frame of the cylinder, ensuring the structural stability of the cylinder body 1 during operation. The piston inside the cylinder body 1 is fixedly connected to the piston rod 5. The sliding of the piston inside the cylinder body 1 can drive the piston rod 5 along the end cap. The 3rd section is the key moving part for the hydraulic cylinder to transmit power. The cylinder also includes existing technologies such as hydraulic ports, seals, and guide sleeves. The protective mechanism 6 and buffer spring 7 are the core components for the anti-collision bottom function. The slide block 601 is fitted around the outer circumference of the cylinder body 1 and can slide along the tie rod 4. It is connected to the connecting seat 603 via the connecting rod 602, and the connecting seat 603 is fixed to the end of the piston rod 5. This allows the protective mechanism 6 to move synchronously when the piston rod 5 extends or retracts. This linkage structure provides buffering when the piston rod 5 reaches its limit position, preventing the piston from directly impacting the bottom of the cylinder body 1, thus achieving anti-collision bottom protection. It also provides auxiliary support for the piston rod 5, reducing the possibility of bending deformation.

[0021] The protection mechanism 6 includes a slide 601, a connecting rod 602, and a connecting seat 603. The slide 601 is sleeved on the outer periphery of the cylinder body 1. The four corners of the slide 601 are slidably connected to the outer periphery of the pull rod 4. The four corners of the slide 601 are installed at one end of the connecting rod 602. The outer periphery of the connecting rod 602 is slidably connected to the four corners of the end cover 3. The other end of the connecting rod 602 is installed at the four corners of the connecting seat 603. The middle part of the connecting seat 603 is installed at the end of the piston rod 5 away from the cylinder body 1.

[0022] Multiple heat dissipation fins 8 are provided on the outer periphery of the cylinder body 1. The heat dissipation fins 8 increase the contact area between the cylinder body 1 and the air, which can accelerate the dissipation of heat generated during the operation of the hydraulic cylinder. During the operation of the hydraulic cylinder, the flow of hydraulic oil and the friction between components will generate heat. If too much heat accumulates, it will cause changes in the viscosity of the hydraulic oil and accelerate the aging of the seals, affecting the working performance and service life of the cylinder. The setting of heat dissipation fins 8 can effectively improve the heat dissipation conditions of the cylinder body 1, maintain the internal temperature of the cylinder within a reasonable range, and ensure its long-term stable operation.

[0023] The other end of the piston rod 5 is equipped with a fisheye connector 9, which is a connector with a spherical bearing. When installed at the end of the piston rod 5 away from the cylinder 1, it enables the piston rod 5 to achieve multi-angle rotation and swing connection with external equipment.

[0024] Buffer springs 7 are installed on both sides of the slide block 601. The buffer springs 7 are sleeved on the outer periphery of the pull rod 4. When the piston rod 5 drives the slide block 601 to move to the extreme positions at both ends, the buffer springs 7 will first contact the bottom cover 2 or the end cover 3 and undergo elastic deformation. Through the compression deformation of the buffer springs 7, the kinetic energy of the piston rod 5 and the piston can be converted into the elastic potential energy of the spring, thereby buffering and absorbing the impact force, greatly reducing the impact force of the piston on the bottom cover 2 or the end cover 3, further enhancing the anti-collision effect of the cylinder, and at the same time reducing the rigid collision between the slide block 601 and other components, extending the service life of the protection mechanism 6.

[0025] A protective sleeve is provided around the outer periphery of the buffer spring 7. This sleeve effectively prevents external dust, impurities, and moisture from entering the spring gap, avoiding rust or jamming due to contamination and ensuring the elastic performance and service life of the buffer spring 7. Simultaneously, the protective sleeve prevents the spring from accidentally becoming entangled or scratching other components during compression or extension, and also reduces noise generated during spring operation to a certain extent, making the hydraulic cylinder run more smoothly and reliably.

[0026] An elastic buffer pad is installed on the side of the piston near the bottom cover 2. When the piston moves rapidly toward the bottom cover 2 due to an accident, this component can contact the bottom cover 2 before the piston body. Through the deformation of the elastic buffer pad itself, it can further absorb the impact force generated by the piston movement. Together with the buffer spring 7, it forms a double buffer protection, which greatly reduces the force of the piston directly hitting the bottom cover 2, avoids damage to the piston and the bottom cover 2 due to rigid collision, and further improves the anti-collision effect and overall service life of the cylinder.

[0027] Working principle:

[0028] During operation, the piston slides inside the cylinder 1, thereby moving the piston rod 5. When the piston rod 5 extends or retracts, it drives the slide block 601 to slide synchronously along the pull rod 4 through the connecting seat 603 and the connecting rod 602. When the piston rod 5 extends or retracts to its limit position, the buffer springs 7 on both sides of the slide block 601 will come into contact with the end cover 3 or the bottom cover 2. The elastic deformation of the buffer springs 7 absorbs the impact force, thereby preventing the piston from directly hitting the end of the cylinder 1. At the same time, the protection mechanism 6 forms an outer peripheral protection for the piston rod 5 through the linkage of the slide block 601, the connecting rod 602 and the connecting seat 603, reducing the risk of bending or damage caused by external forces. In addition, the heat dissipation fins 8 on the outer periphery of the cylinder 1 can dissipate the heat generated during operation in a timely manner, ensuring the stable operation of the cylinder. The fisheye connector 9 installed at the other end of the piston rod 5 facilitates the connection between the cylinder and external components.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder for preventing collisions, comprising a cylinder body (1), characterized in that: An end cap (3) is installed on the right end of the cylinder (1), and a bottom cap (2) is installed on the left end of the cylinder (1). The bottom cap (2) and the end cap (3) are connected at the four corners by a pull rod (4). A piston is slidably connected inside the cylinder (1). The middle part of the piston is fixedly connected to one end of the piston rod (5). The outer periphery of the piston rod (5) is slidably connected to the middle part of the end cap (3). A protective mechanism (6) is provided on the outer periphery of the piston rod (5). The protection mechanism (6) includes a slide (601), a connecting rod (602), and a connecting seat (603). The slide (601) is sleeved on the outer periphery of the cylinder (1). The four corners of the slide (601) are slidably connected to the outer periphery of the pull rod (4). The four corners of the slide (601) are installed at one end of the connecting rod (602). The outer periphery of the connecting rod (602) is slidably connected to the four corners of the end cap (3). The other end of the connecting rod (602) is installed at the four corners of the connecting seat (603). The middle part of the connecting seat (603) is installed at the end of the piston rod (5) away from the cylinder (1).

2. The anti-collision bottom hydraulic cylinder according to claim 1, characterized in that: The cylinder body (1) has multiple heat dissipation fins (8) on its outer periphery.

3. The anti-collision bottom hydraulic cylinder according to claim 1, characterized in that: The other end of the piston rod (5) is fitted with a fisheye connector (9).

4. The anti-collision bottom hydraulic cylinder according to claim 1, characterized in that: The slide block (601) is equipped with buffer springs (7) on both sides, and the buffer springs (7) are sleeved on the outer periphery of the pull rod (4).

5. A hydraulic cylinder for preventing collisions according to claim 4, characterized in that: The buffer spring (7) is provided with a protective sleeve on its outer periphery.

6. The anti-collision bottom hydraulic cylinder according to claim 1, characterized in that: An elastic buffer pad is installed on the side of the piston near the bottom cover (2).

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