Hydraulic oil cylinder with protection function

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder with a protection function, which comprises a hydraulic oil cylinder, a lower protection cover is arranged below the hydraulic oil cylinder, and an upper protection cover is arranged above the hydraulic oil cylinder. The lower protective cover and the upper protective cover are folded to enable the hinge block to be located between the first connecting block and the second connecting block, and the inner walls of the two ends of the inner side of the lower protective cover and the inner walls of the two ends of the inner side of the upper protective cover are attached to the edges of the two ends of the hydraulic oil cylinder. One end of an inserting rod penetrates through a first connecting block, a hinge block and a second connecting block so as to connect the lower protective cover and the upper protective cover, air is injected into a rubber pad, impact force can be buffered under the action of compressibility of the air, and if the impact force is too large, the rubber pad is broken, and the rubber pad is prevented from being damaged. The hydraulic oil cylinder is not damaged by release of air, and the problems that an existing device is inconvenient to use and poor in protection effect are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder with protective function. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. It is mainly used to achieve linear reciprocating motion or oscillating motion. Because the working environment of hydraulic cylinders is relatively harsh, a hydraulic cylinder with protective functions is required.

[0003] A search revealed a Chinese patent (authorization announcement number: CN220185492U) disclosing a hydraulic cylinder with protective functions. The cylinder includes a hydraulic cylinder body, a piston rod mounted on the front of the body, and protective components symmetrically and movably connected to its left and right sides. Buffer components are symmetrically and fixedly connected to opposite sides of the two protective components. Movable columns are symmetrically and movably connected to opposite sides of the buffer components on both sides. Receiving blocks are symmetrically and fixedly connected to the top and bottom of opposite sides of the two protective components, and connecting components are symmetrically and movably connected to opposite sides of the receiving blocks on both sides. This invention provides a hydraulic cylinder with protective functions, featuring effective protective buffer components that provide complete protection while facilitating disassembly and assembly without hindering maintenance.

[0004] In practical applications, this patented technology can buffer external forces to protect the hydraulic cylinder. However, during use, when the external impact force is too large, the first spring in the above solution cannot fully buffer the impact force, and the impact force will act on the movable column. After being subjected to force, the movable column will directly impact the hydraulic cylinder body, causing damage to the hydraulic cylinder body and even oil leakage. Furthermore, when the direction of the impact force does not correspond to the axis of the movable column, the impact force will cause the movable column to deform, making the first spring unable to buffer the impact force. At the same time, the above solution can only buffer the lateral side of the hydraulic cylinder body, and is not convenient for buffering the longitudinal side of the hydraulic cylinder body, which greatly reduces the protective effect of the hydraulic cylinder. In addition, the above solution uses bolts and nuts to fix the protective components. Whether fixing or disassembling the protective components, special tools are required. Once the special tools are lost, it is impossible to disassemble or assemble the protective components, thus greatly reducing the convenience of the device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic cylinder with protective functions.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A hydraulic cylinder with protective function includes a hydraulic cylinder, a lower protective cover disposed below the hydraulic cylinder, and an upper protective cover disposed above the hydraulic cylinder. The inner walls of the inner ends of the lower and upper protective covers are fitted against the edges of the two ends of the hydraulic cylinder. Both ends of the lower and upper protective covers are provided with snap-fit ​​mechanisms. A plurality of buffer springs are disposed on the inner side of the lower and upper protective covers and are evenly distributed. One end of each buffer spring is fixedly connected to a first buffer pad, and the other end of each buffer spring is fixedly connected to a second buffer pad. The lower part of the first buffer pad is fitted against the hydraulic cylinder, and the upper part of the second buffer pad is fitted against the inner side of the upper protective cover.

[0008] The locking mechanism includes a first connecting block, a second connecting block, a hinge block, and a plug rod. The first connecting block is fixedly connected to one end of the lower protective cover. The second connecting block is disposed at one end of the first connecting block and is fixedly connected to the lower protective cover. The hinge block is movably connected between the first connecting block and the second connecting block and is fixedly connected to the upper protective cover. The plug rod is disposed on one side of the lower and upper protective covers. One end of the plug rod passes through the first connecting block, the hinge block, and the second connecting block and is slidably connected to them.

[0009] Preferably, rubber pads are provided on the inner sides of both the lower and upper protective covers. The rubber pads are located on one side of the buffer spring. The upper part of the rubber pads is in contact with the inner wall of the upper protective cover, and the lower part of the rubber pads is in contact with the hydraulic cylinder. Several rubber pads are provided and evenly distributed. An air chamber is opened inside the rubber pad.

[0010] Preferably, a connecting pipe is connected to one side of the rubber pad below, and a one-way valve is fitted at the other end of the connecting pipe.

[0011] Preferably, the inner sides of both the lower and upper protective covers are fixedly connected with snap-fit ​​rings. Several snap-fit ​​rings are arranged around the outer side of the hydraulic cylinder and are evenly distributed. The rubber pad and the second buffer pad above the buffer spring are snapped together with the upper protective cover through the snap-fit ​​rings. The total number of rubber pads and buffer springs is the same as the number of snap-fit ​​rings.

[0012] Preferably, one end of the insertion rod is provided with an insertion rod spring and a steel ball, the insertion rod spring is located below the steel ball and abuts against it, and the other end of the steel ball passes through the insertion rod and is slidably connected to it.

[0013] Preferably, a pull ring is fixedly connected to the other end of the insertion rod, a connecting rope is fixedly connected to the other end of the pull ring, and the other end of the connecting rope is fixedly connected to one side of the lower protective cover.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by closing the lower protective cover and the upper protective cover together, the hinge block is located between the first connecting block and the second connecting block. By passing one end of the insertion rod through the first connecting block, the hinge block and the second connecting block, the lower protective cover and the upper protective cover are connected and fixed, thus solving the problem of the inconvenience of using the current device.

[0016] 2. In this utility model, by injecting air into the rubber pad, the impact force can be buffered by the compressibility of the gas. If the impact force is too large and causes the rubber pad to break, the release of air will not damage the hydraulic cylinder. In addition, the rubber pad itself has buffering properties, which greatly increases the protective performance of the rubber pad for the hydraulic cylinder and solves the problem of poor protection effect of the current device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the hydraulic cylinder in this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the lower protective cover and the upper protective cover in this utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure between the rubber pad and the buffer spring in this utility model.

[0020] Figure 4 In this utility model Figure 1 A magnified structural diagram of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the connection structure of the buffer spring, hydraulic cylinder and second buffer pad in this utility model.

[0022] Figure 6 This is a cross-sectional structural diagram of the rubber pad in this utility model.

[0023] Figure 7 This is a schematic diagram of the connection structure of the rubber pad, buffer spring, and snap ring in this utility model.

[0024] Figure 8 This is a cross-sectional structural diagram of the insertion rod in this utility model.

[0025] Legend:

[0026] 1. Hydraulic cylinder; 2. Lower protective cover; 3. Upper protective cover; 4. Clamping mechanism; 41. First connecting block; 42. Second connecting block; 43. Hinge block; 44. Insert rod; 5. Rubber pad; 6. Buffer spring; 7. First buffer pad; 8. Second buffer pad; 9. Air chamber; 10. Connecting pipe; 11. One-way valve; 12. Clamping ring; 13. Insert rod spring; 14. Steel ball; 15. Pull ring; 16. Connecting rope. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1-8 The present invention provides an embodiment of a hydraulic cylinder with protective function, comprising a hydraulic cylinder 1, a lower protective cover 2 disposed below the hydraulic cylinder 1, and an upper protective cover 3 disposed above the hydraulic cylinder 1. The lower protective cover 2 and the upper protective cover 3 are used to protect the hydraulic cylinder 1. The inner walls of the inner ends of the lower protective cover 2 and the upper protective cover 3 are in contact with the edges of the two ends of the hydraulic cylinder 1. Both ends of the lower protective cover 2 and the upper protective cover 3 are provided with a snap-fit ​​mechanism 4. The inner sides of the lower protective cover 2 and the upper protective cover 3 are provided with a buffer spring 6. The buffer spring 6 is used to buffer external forces. Several buffer springs 6 are provided and evenly distributed. One end of the buffer spring 6 is fixedly connected to a first buffer pad 7, and the other end of the buffer spring 6 is fixedly connected to a second buffer pad 8. The first buffer pad 7 and the second buffer pad 8 are used to increase the buffering force of the buffer spring 6. The lower part of the first buffer pad 7 is in contact with the hydraulic cylinder 1, and the upper part of the second buffer pad 8 is in contact with the inner side of the upper protective cover 3.

[0029] The snap-fit ​​mechanism 4 includes a first connecting block 41, a second connecting block 42, a hinge block 43, and a plug rod 44. The first connecting block 41 is fixedly connected to one end of the lower protective cover 2. The second connecting block 42 is disposed at one end of the first connecting block 41 and is fixedly connected to the lower protective cover 2. The hinge block 43 is movably connected between the first connecting block 41 and the second connecting block 42 and is fixedly connected to the upper protective cover 3. The plug rod 44 is disposed on one side of the lower protective cover 2 and the upper protective cover 3. One end of the plug rod 44 passes through the first connecting block 41, the hinge block 43, and the second connecting block 42 and is slidably connected to them.

[0030] Through the above technical solution, by setting up the snap-fit ​​mechanism 4, the lower protective cover 2 and the upper protective cover 3 are closed together, so that the hinge block 43 is located between the first connecting block 41 and the second connecting block 42. By passing one end of the plug rod 44 through the first connecting block 41, the hinge block 43 and the second connecting block 42, the connection and fixation between the lower protective cover 2 and the upper protective cover 3 can be achieved.

[0031] Specifically, rubber pads 5 are provided on the inner sides of both the lower protective cover 2 and the upper protective cover 3. The rubber pads 5 are located on one side of the buffer spring 6. The upper part of the rubber pads 5 is in contact with the inner wall of the upper protective cover 3, and the lower part of the rubber pads 5 is in contact with the hydraulic cylinder 1. There are several rubber pads 5 and they are evenly distributed. An air chamber 9 is opened inside the rubber pads 5.

[0032] Through the above technical solution, by setting up a rubber pad 5 and injecting air into the interior of the rubber pad 5, the impact force can be buffered under the action of gas compressibility. If the impact force is too large and causes the rubber pad 5 to break, the release of air will not damage the hydraulic cylinder 1. In addition, the rubber pad 5 itself also has buffering properties, thereby greatly increasing the protective performance of the rubber pad 5 for the hydraulic cylinder 1.

[0033] Specifically, a connecting pipe 10 is connected to one side of the rubber pad 5, and a one-way valve 11 is fitted at the other end of the connecting pipe 10.

[0034] Through the above technical solution, by setting the connecting pipe 10 and the one-way valve 11, gas can be injected into the rubber pad 5 through the connecting pipe 10 before assembling the rubber pad 5, so that the gas pressure inside the rubber pad 5 is at a suitable value. Under the action of the one-way valve, the gas inside the rubber pad 5 can be prevented from leaking out of the connecting pipe 10, thus playing the role of only allowing gas to enter and not exit.

[0035] Specifically, the inner sides of the lower protective cover 2 and the upper protective cover 3 are both fixedly connected with snap rings 12. Several snap rings 12 are arranged around the outer side of the hydraulic cylinder 1 and are evenly distributed. The rubber pad 5 and the second buffer pad 8 above the buffer spring 6 are snapped together with the upper protective cover 3 through the snap rings 12. The total number of rubber pads 5 and buffer springs 6 is the same as the number of snap rings 12.

[0036] Through the above technical solution, by setting the snap ring 12, the rubber pad 5 and the buffer spring 6 can be supported and fixed, and the rubber pad 5 and the buffer spring 6 can be fixed inside the lower protective cover 2 and the upper protective cover 3, which can facilitate the assembly by the staff.

[0037] Specifically, one end of the insertion rod 44 is provided with an insertion rod spring 13 and a steel ball 14. The insertion rod spring 13 is located below the steel ball 14 and abuts against it. The other end of the steel ball 14 passes through the insertion rod 44 and is slidably connected to it.

[0038] Through the above technical solution, by setting the insertion rod spring 13 and the steel ball 14, the steel ball 14 can be pushed to always be located on the outside of the insertion rod 44 under the action of the insertion rod spring 13, thereby preventing the insertion rod 44 from detaching from the first connecting block 41, the hinge block 43 and the second connecting block 42 without cause.

[0039] Specifically, a pull ring 15 is fixedly connected to the other end of the insertion rod 44, and a connecting rope 16 is fixedly connected to the other end of the pull ring 15. The other end of the connecting rope 16 is fixedly connected to one side of the lower protective cover 2.

[0040] Through the above technical solution, by setting the pull ring 15, a force point can be provided when the worker passes through the pull ring 15, which can facilitate the worker to pull the insertion rod 44 out from the first connecting block 41, the hinge block 43, and the second connecting block 42. By setting the connecting rope 16, the insertion rod 44 can be fixed on the lower protective cover 2, thereby preventing the worker from losing the insertion rod 44 due to mistakes, which would prevent the lower protective cover 2 from being assembled with the upper protective cover 3.

[0041] Working principle: In use, firstly, gas is injected into the rubber pad 5 through the connecting pipe 10 to bring the gas pressure inside the rubber pad 5 to a suitable value. Then, the buffer spring 6 and the rubber pad 5 are sequentially installed in the snap rings 12 inside the lower protective cover 2 and the upper protective cover 3, and the snap rings 12 are used to fix the rubber pad 5 and the buffer spring 6. Then, the hydraulic cylinder 1 is placed between the lower protective cover 2 and the upper protective cover 3 and closed, so that the hinge block 43 is located between the first connecting block 41 and the second connecting block 42. Then, one end of the insert rod 44 passes through the first connecting block 41, the hinge block 43 and the second connecting block 42, thereby connecting and fixing the lower protective cover 2 and the upper protective cover 3. When subjected to impact force, the buffer spring 6 and the rubber pad 5 are fixed together. The rubber pad 5 is compressed. Due to the compressibility of the gas inside the rubber pad 5, it can buffer the impact force. If the impact force is too large and causes the rubber pad 5 to rupture, the release of air will not damage the hydraulic cylinder 1. Furthermore, the rubber pad 5 itself has buffering properties. When there is no gas inside the rubber pad 5, it can still buffer the impact force through its own action, thereby greatly increasing the protective performance of the rubber pad 5 for the hydraulic cylinder 1. The buffer spring 6 can also buffer the impact force. The buffer spring 6 has a first buffer pad 7 and a second buffer pad 8 at both ends. It not only has a buffering function, but also forms a protection between the buffer spring 6 and the hydraulic cylinder 1, preventing the buffer spring 6 from damaging the hydraulic cylinder 1.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic cylinder with protective function, comprising a hydraulic cylinder (1), characterized in that: A lower protective cover (2) is provided below the hydraulic cylinder (1), and an upper protective cover (3) is provided above the hydraulic cylinder (1). The inner walls of the lower protective cover (2) and the upper protective cover (3) are in contact with the edges of the hydraulic cylinder (1) at both ends. A snap-fit ​​mechanism (4) is provided at both ends of the lower protective cover (2) and the upper protective cover (3). A buffer spring (6) is provided on the inner side of the lower protective cover (2) and the upper protective cover (3). The buffer spring (6) is configured as several and evenly distributed. A first buffer pad (7) is fixedly connected to one end of the buffer spring (6), and a second buffer pad (8) is fixedly connected to the other end of the buffer spring (6). The lower part of the first buffer pad (7) is in contact with the hydraulic cylinder (1), and the upper part of the second buffer pad (8) is in contact with the inner side of the upper protective cover (3). The snap-fit ​​mechanism (4) includes a first connecting block (41), a second connecting block (42), a hinge block (43), and a plug rod (44). The first connecting block (41) is fixedly connected to one end of the lower protective cover (2). The second connecting block (42) is disposed at one end of the first connecting block (41) and is fixedly connected to the lower protective cover (2). The hinge block (43) is movably connected between the first connecting block (41) and the second connecting block (42) and is fixedly connected to the upper protective cover (3). The plug rod (44) is disposed on one side of the lower protective cover (2) and the upper protective cover (3). One end of the plug rod (44) passes through the first connecting block (41), the hinge block (43), and the second connecting block (42) and is slidably connected to them.

2. A hydraulic cylinder with protective function according to claim 1, characterized in that: Both the lower protective cover (2) and the upper protective cover (3) are provided with rubber pads (5). The rubber pads (5) are located on one side of the buffer spring (6). The upper part of the rubber pads (5) is in contact with the inner wall of the upper protective cover (3), and the lower part of the rubber pads (5) is in contact with the hydraulic cylinder (1). There are several rubber pads (5) and they are evenly distributed. An air chamber (9) is opened inside the rubber pads (5).

3. A hydraulic cylinder with protective function according to claim 2, characterized in that: A connecting pipe (10) is connected to one side of the rubber pad (5), and a one-way valve (11) is fitted at the other end of the connecting pipe (10).

4. A hydraulic cylinder with protective function according to claim 2, characterized in that: The lower protective cover (2) and the upper protective cover (3) are both fixedly connected with snap rings (12). Several snap rings (12) are arranged around the outside of the hydraulic cylinder (1) and are evenly distributed. The rubber pad (5) and the second buffer pad (8) above the buffer spring (6) are snapped together with the upper protective cover (3) through snap rings (12). The total number of rubber pads (5) and buffer springs (6) is the same as the number of snap rings (12).

5. A hydraulic cylinder with protective function according to claim 1, characterized in that: The insertion rod (44) has an insertion rod spring (13) and a steel ball (14) inside one end. The insertion rod spring (13) is located below the steel ball (14) and abuts against it. The other end of the steel ball (14) passes through the insertion rod (44) and is slidably connected to it.

6. A hydraulic cylinder with protective function according to claim 1, characterized in that: The other end of the insertion rod (44) is fixedly connected to a pull ring (15), and the other end of the pull ring (15) is fixedly connected to a connecting rope (16). The other end of the connecting rope (16) is fixedly connected to one side of the lower protective cover (2).

Images