Air cylinder with prolonged service life

Abstract

The utility model discloses an air cylinder with prolonged service life, which comprises a cylinder body and a piston rod arranged in the cylinder body in a sliding manner, one side of the cylinder body is provided with an electromagnetic directional valve, one output end of the electromagnetic directional valve is communicated with one input end of the cylinder body, one end of the cylinder body is provided with a base, and the other end of the cylinder body is provided with a piston rod. A plurality of telescopic and movable abutting blocks are evenly distributed on the side wall of the base with a circle point as the axis, and springs are arranged on the back faces of the abutting blocks and abut against the base so that the abutting blocks can abut against the piston rod. When the piston rod deviates from the axis of the cylinder body, the abutting block in one direction is pushed to move towards the microswitch, the microswitch is triggered to be closed and conducted, the power source supplies power to a coil of the electromagnetic reversing valve, the output end, communicated with the input end of the cylinder body, of the electromagnetic reversing valve is cut off, and gas or liquid is prevented from continuously entering the cylinder body; and the product has the advantage of long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a cylinder with increased service life. Background Art

[0002] The cylinder is a common driving component nowadays. It can exert a certain force on the target object to make it move. With the improvement of production level, the types of cylinders have become very diverse, and cylinders can also be used in many fields.

[0003] When the installation position of the cylinder is not on the same axis as the object being pushed, the axis of the piston rod and the cylinder body will not be on the same axis, causing the piston rod to bend and deform during the reciprocating motion, and the piston and the inner wall of the cylinder to be severely worn, until the cylinder cannot be used normally, greatly shortening the service life of the cylinder. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional cylinder design and provide a product with a long service life.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A cylinder with improved service life includes a cylinder body and a piston rod slidably arranged in the cylinder body, an electromagnetic reversing valve is provided on one side of the cylinder body, one output end of the electromagnetic reversing valve is connected to one input end of the cylinder body, a base is provided at one end of the cylinder body, and a plurality of retractable and movable resistance blocks are evenly distributed on the side wall of the base with a circle as the axis, a spring is provided on the back of the resistance block, and abuts the base so that the resistance block abuts the piston rod, the base is provided with a micro switch corresponding to the resistance block, and is located behind the back of the resistance block, and the micro switch is electrically connected to the electromagnetic reversing valve.

[0007] Preferably, the base is provided with an open cavity for accommodating the interference block, and limiting grooves are provided on both sides of the cavity.

[0008] Preferably, the cavity is provided with a step for supporting the micro switch, the step is provided with at least two guide pillars passing through the micro switch, and the step is provided with a first blind hole.

[0009] Preferably, an end cover is provided on the top of the base, and the end cover is provided with a wire hole corresponding to the micro switch. A through hole is provided in the center of the base and the end cover, and the through hole and the interference portion maintain the distance between the guide block and the micro switch.

[0010] Preferably, the interference block is provided with a guide block and is slidably arranged in the concave cavity. Limiting parts are provided on both sides of the guide block and are slidably arranged in the limiting groove. The guide block is provided with a second blind hole corresponding to the first blind hole.

[0011] Preferably, the spring is arranged in the first blind hole and the second blind hole, and the interference block is arranged in an arc shape.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model discloses that when the piston rod is offset from the axis of the cylinder body and pushes the resistance block in one direction toward the micro switch, and triggers the micro switch to close and conduct, the power supply supplies power to the coil of the electromagnetic reversing valve, and the moving iron core in the electromagnetic reversing valve pushes the valve core inside it to move, cutting off the output end of the electromagnetic reversing valve connected to the input end of the cylinder body, preventing gas or liquid from continuing to enter the cylinder body. The piston rod lacks the driving medium and remains in a pending state to wait for the staff to handle it, which is convenient for the staff to quickly troubleshoot the problem. At the same time, it also prevents the piston rod from forcibly rubbing against the inner wall of the cylinder, and the piston rod from bending under force, thereby extending the service life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a cylinder with a longer service life according to the present invention;

[0016] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a cylinder with a longer service life according to the present invention;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of a cylinder with increased service life;

[0018] Figure 4 This is a schematic diagram of the internal structure of a base of a cylinder with increased service life according to the present invention;

[0019] Figure 5 For this utility model Figure 4 A partial enlarged view B of a cylinder with increased service life;

[0020] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0021] Figure numerals: 1. Cylinder body; 2. Solenoid reversing valve; 3. Base; 4. Resistance block; 5. Spring; 6. Micro switch; 7. End cover; 8. Through hole; 11. Piston rod; 31. Concave cavity; 32. Limiting groove; 33. Step; 34. Guide column; 35. First blind hole; 41. Guide block; 42. Limiting part; 43. Second blind hole; 71. Wire hole. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0025] Reference example Figures 1 to 5 , a cylinder with improved service life, including a cylinder body 1, and a piston rod 11 slidably arranged in the cylinder body 1, an electromagnetic reversing valve 2 is provided on one side of the cylinder body 1, one output end of the electromagnetic reversing valve 2 is connected to one input end of the cylinder body 1, and a base 3 is provided at one end of the cylinder body 1. The side wall of the base 3 is evenly distributed with a plurality of retractable and movable resistance blocks 4 with a circle as the axis. A spring 5 is provided on the back of the resistance block 4, and abuts the base 3 so that the resistance block 4 abuts the piston rod 11. The base 3 is provided with a micro switch 6 corresponding to the resistance block 4, and is located behind the back of the resistance block 4. The micro switch 6 is electrically connected to the electromagnetic reversing valve 2. The electromagnetic reversing valve 2 belongs to the prior art and will not be described in detail here. The input end of the electromagnetic reversing valve 2 is connected to the gas source or the liquid source;

[0026] It is worth mentioning that the base 3 is provided with an open cavity 31 for accommodating the abutment block 4. Limiting grooves 32 are provided on both sides of the cavity 31. The cavity 31 provides guidance for the guide block 41, and the limiting grooves 32 limit the distance that the abutment block 4 extends out of the cavity 31.

[0027] It is worth mentioning that the cavity 31 is provided with a step 33 for supporting the micro switch 6. The step 33 is provided with at least two guide pillars 34 and passes through the micro switch 6. The step 33 is provided with a first blind hole 35. The step 33 allows the micro switch 6 to avoid the spring 5. The guide pillars 34 provide support for the micro switch 6. The first blind hole 35 prevents the spring 5 from displacement.

[0028] It is worth mentioning that the top of the base 3 is provided with an end cover 7, and the end cover 7 is provided with a wire hole 71 corresponding to the micro switch 6. The base 3 and the center of the end cover 7 are provided with a through hole 8. The through hole 8 and the interference portion maintain the distance between the guide block 41 and the micro switch 6. The end cover 7 not only fixes the micro switch 6, but also protects the interference block 4 and the spring 5. The wire hole 71 facilitates the electrical connection of the wire led out of the micro switch 6 to the electromagnetic reversing valve 2.

[0029] It is worth mentioning that the interference block 4 is provided with a guide block 41 and is slidably arranged in the concave cavity 31. The guide block 41 is provided with a limit portion 42 on both sides and is slidably arranged in the limit groove 32. The guide block 41 is provided with a second blind hole 43 corresponding to the first blind hole 35. The second blind hole 43 prevents the spring 5 from being displaced. The spring 5 provides a reset function for the interference block 4.

[0030] It is worth mentioning that the spring 5 is arranged in the first blind hole 35 and the second blind hole 43, and the resistance block 4 is set to an arc shape, which better fits the shape of the piston rod 11, ensuring that no matter which direction the piston rod 11 deviates, the distance from the guide block 41 to the micro switch 6 remains unchanged.

[0031] The operating principle of the present invention is now described as follows:

[0032] When the piston rod 11 is offset from the axis of the cylinder body 1, and pushes the resistance block 4 in one direction toward the micro switch 6, and compresses the spring 5 to store energy until the guide block 41 triggers the button of the micro switch 6, the micro switch 6 is closed and turned on, and the power supply supplies power to the coil of the electromagnetic reversing valve 2. The moving iron core in the electromagnetic reversing valve 2 pushes the valve core inside it to move, cutting off the output end of the electromagnetic reversing valve 2 connected to the input end of the cylinder body 1, preventing gas or liquid from continuing to enter the cylinder body 1, and the piston rod 11 lacks the driving medium and remains in a pending state waiting for the staff to handle it, which is convenient for the staff to quickly troubleshoot the problem. At the same time, it also prevents the piston rod 11 from forcibly rubbing against the inner wall of the cylinder body 1, and the piston rod 11 from bending under force, thereby extending the service life of the cylinder.

[0033] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A cylinder with improved service life, comprising a cylinder body (1), and a piston rod (11) slidably arranged in the cylinder body (1), characterized in that: An electromagnetic reversing valve (2) is provided on one side of the cylinder body (1), one output end of the electromagnetic reversing valve (2) is connected to one input end of the cylinder body (1), a base (3) is provided on one end of the cylinder body (1), a side wall of the base (3) is evenly distributed with a plurality of retractable and movable contact blocks (4) with a circle as the axis, a spring (5) is provided on the back of the contact block (4) and abuts the base (3) so that the contact block (4) abuts the piston rod (11), a micro switch (6) corresponding to the contact block (4) is provided on the base (3) and is located behind the back of the contact block (4), and the micro switch (6) is electrically connected to the electromagnetic reversing valve (2).

2. The cylinder with increased service life according to claim 1, characterized in that: The base (3) is provided with an open cavity (31) for accommodating the abutment block (4), and limiting grooves (32) are provided on both sides of the cavity (31).

3. The cylinder with increased service life according to claim 2, characterized in that: The concave cavity (31) is provided with a step (33) for supporting the micro switch (6), the step (33) is provided with at least two guide pillars (34) and passes through the micro switch (6), and the step (33) is provided with a first blind hole (35).

4. The cylinder with increased service life according to claim 2, characterized in that: An end cover (7) is provided on the top of the base (3), and a wire hole (71) corresponding to the micro switch (6) is provided on the end cover (7). A through hole (8) is provided in the center of the base (3) and the end cover (7), and the through hole (8) and the contact portion maintain a distance between the guide block (41) and the micro switch (6) triggered.

5. The cylinder with increased service life according to claim 3, characterized in that: The abutment block (4) is provided with a guide block (41) and is slidably arranged in the concave cavity (31); both sides of the guide block (41) are provided with limiting portions (42) and are slidably arranged in the limiting groove (32); the guide block (41) is provided with a second blind hole (43) corresponding to the first blind hole (35).

6. The cylinder with increased service life according to claim 5, characterized in that: The spring (5) is arranged in the first blind hole (35) and the second blind hole (43), and the resistance block (4) is arranged in an arc shape.

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