Hydraulic oil cylinder plunger

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder plunger which comprises a hydraulic oil cylinder body and a plunger body, a fixing ring is fixedly connected to the outer side of the end, close to the plunger body, of the hydraulic oil cylinder body, a threaded groove penetrating through the fixing ring is formed in one side of the fixing ring, and a supporting bolt is spirally connected to the inner side of the threaded groove. By means of the fixing ring, the threaded groove, the supporting bolt, the rotary connector and the supporting ring, the pressure of the plunger can be shared when the plunger body supports an object for a long time, oil leakage is prevented, and when the object needs to be supported, hydraulic oil is introduced into the inner side of the hydraulic oil cylinder body firstly, and the plunger body extends out; when an object reaches a proper position, the hydraulic oil is stopped from being introduced, then the supporting bolts are screwed, the supporting bolts rotate and move on the inner side of the threaded groove till the rotating connector is tightly attached to the supporting ring, the pressure of the object can be dispersed to the supporting bolts through the supporting ring, and the pressure of the plunger body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder plunger. Background Art

[0002] A hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy for reciprocating linear motion. It can convert hydraulic energy into mechanical energy. When it is used to achieve reciprocating motion, a deceleration device can be eliminated, and there is no transmission gap and smooth movement, which makes it widely used in the hydraulic systems of various machines. The hydraulic cylinder plunger is a key component in the hydraulic cylinder. It is an elongated cylinder usually made of metal. The main function of the plunger is to make reciprocating motion in the hydraulic cylinder to transmit force and realize mechanical movement. There is a small hole on the plunger, called the plunger hole, which is used to hold hydraulic oil so that the hydraulic oil can flow smoothly during the movement of the plunger.

[0003] In the prior art, the design of the interior of the hydraulic cylinder is relatively mature. However, when the hydraulic cylinder is actually used, the plunger is required to support the object for a long time, which may cause excessive pressure inside the hydraulic cylinder, thereby causing oil leakage in the cylinder. In addition, the plunger is exposed to the outside, and dust and impurities will adhere to the outside of the plunger. As the plunger reciprocates, they enter the inside of the hydraulic cylinder, causing the hydraulic oil inside the hydraulic cylinder to be contaminated. Therefore, a hydraulic cylinder plunger is proposed to address the above problems. Summary of the invention

[0004] The purpose of the utility model is to provide a hydraulic cylinder plunger to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hydraulic cylinder plunger comprises a hydraulic cylinder body and a plunger body, wherein a fixing ring is fixedly connected to the outer side of one end of the hydraulic cylinder body close to the plunger body, a threaded groove penetrating the fixing ring is provided on one side of the fixing ring, a supporting bolt is spirally connected to the inner side of the threaded groove, a rotating joint is fixedly connected to one end of the supporting bolt, and a supporting ring is fixedly connected to the outer side of the plunger body.

[0007] Preferably, a first groove is provided on the outer side of the support ring, a first semi-open ring is provided on the inner side of the first groove, a first connecting block is fixedly connected to one end of the first semi-open ring, a first circular hole is provided on one side of the first connecting block, a first bolt is provided on the inner side of the first circular hole, a first nut is spirally connected to the outer side of the first bolt, a second groove is provided on the outer side of the fixing ring, a second semi-open ring is provided on the inner side of the second groove, a second connecting block is fixedly connected to one end of the second semi-open ring, a second circular hole is provided on one side of the second connecting block, a second bolt is provided on the inner side of the second circular hole, a second nut is spirally connected to the outer side of the second bolt, and telescopic tubes are provided on the inner sides of the first semi-open ring and the second semi-open ring.

[0008] Preferably, the number of the first semi-open rings is two, the number of the first connecting blocks, the first circular holes, the first bolts and the first nuts are all four, and the inner diameter of the first circular hole is larger than the outer diameter of the first bolt.

[0009] Preferably, the number of the second semi-open rings is two, the number of the second connecting blocks, the second circular holes, the second bolts and the second nuts are all four, and the inner diameter of the second circular hole is larger than the outer diameter of the second bolt.

[0010] Preferably, the number of the thread grooves, support bolts and rotary joints is six, and the outer diameters of the fixing ring and the support ring are the same.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the fixed ring, threaded groove, support bolt, swivel joint and support ring are provided, so that the plunger pressure can be shared when the plunger body supports an object for a long time, and oil leakage can be prevented. When an object needs to be supported, hydraulic oil is first introduced into the inner side of the hydraulic cylinder body, and the plunger body is extended. When the object reaches a suitable position, the introduction of hydraulic oil is stopped, and then the support bolt is screwed. The support bolt rotates and moves inside the threaded groove until the swivel joint fits tightly with the support ring. The pressure of the object can be dispersed to each support bolt through the support ring, thereby reducing the pressure of the plunger body.

[0013] 2. In the utility model, by setting the first groove, the first semi-open ring, the first connecting block, the first circular hole, the first bolt, the first nut, the second groove, the second semi-open ring, the second connecting block, the second circular hole, the second bolt, the second nut and the telescopic tube, it is possible to prevent external dust and impurities from adhering to the outside of the plunger body. First, the two ends of the telescopic tube are respectively put on the fixing ring and the supporting ring, and then the two first semi-open rings are pressed on the outside of the telescopic tube, and then the first bolt is inserted into the inner side of the first circular hole on one side of the first connecting block, and the first nut is screwed on the outside of the first bolt until the telescopic tube is tightly fitted with the inner side of the first groove, and then the two second semi-open rings are pressed on the outside of the telescopic tube, and then the second bolt is inserted into the inner side of the second circular hole on one side of the second connecting block, and the second nut is screwed on the outside of the second bolt until the telescopic tube is tightly fitted with the inner side of the second groove, so as to complete the protection measures for the plunger body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall disassembled structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall inner structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the overall external structure of the utility model.

[0017] In the figure: 1. hydraulic cylinder body; 2. plunger body; 3. fixing ring; 4. threaded groove; 5. support bolt; 6. swivel joint; 7. support ring; 8. first groove; 9. first semi-open ring; 10. first connecting block; 11. first circular hole; 12. first bolt; 13. first nut; 14. second groove; 15. second semi-open ring; 16. second connecting block; 17. second circular hole; 18. second bolt; 19. second nut; 20. telescopic tube. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] A hydraulic cylinder plunger comprises a hydraulic cylinder body 1 and a plunger body 2. A fixing ring 3 is fixedly connected to the outer side of one end of the hydraulic cylinder body 1 close to the plunger body 2. A threaded groove 4 penetrating the fixing ring 3 is provided on one side of the fixing ring 3. A supporting bolt 5 is spirally connected to the inner side of the threaded groove 4. A rotating joint 6 is fixedly connected to one end of the supporting bolt 5. A supporting ring 7 is fixedly connected to the outer side of the plunger body 2.

[0023] A first groove 8 is provided on the outer side of the support ring 7, a first semi-open ring 9 is provided on the inner side of the first groove 8, a first connecting block 10 is fixedly connected to one end of the first semi-open ring 9, a first circular hole 11 penetrating the first connecting block 10 is provided on one side of the first connecting block 10, a first bolt 12 is provided on the inner side of the first circular hole 11, a first nut 13 is spirally connected to the outer side of the first bolt 12, a second groove 14 is provided on the outer side of the fixing ring 3, a second semi-open ring 15 is provided on the inner side of the second groove 14, a second connecting block 16 is fixedly connected to one end of the second semi-open ring 15, a second circular hole 17 penetrating the second connecting block 16 is provided on one side of the second connecting block 16, a second bolt 18 is provided on the inner side of the second circular hole 17, and the second bolt 18 is provided on the inner side of the second circular hole 17. A second nut 19 is spirally connected to the outer side of 18, a telescopic tube 20 is provided on the inner sides of the first semi-open ring 9 and the second semi-open ring 15, there are two first semi-open rings 9, four first connecting blocks 10, four first circular holes 11, first bolts 12 and first nut 13, the inner diameter of the first circular hole 11 is larger than the outer diameter of the first bolt 12, there are two second semi-open rings 15, four second connecting blocks 16, four second circular holes 17, two second bolts 18 and two second nut 19, the inner diameter of the second circular hole 17 is larger than the outer diameter of the second bolt 18, there are six thread grooves 4, support bolts 5 and rotary joints 6, and the outer diameters of the fixing ring 3 and the support ring 7 are the same.

[0024] Working process: First, put the two ends of the telescopic tube 20 on the fixing ring 3 and the supporting ring 7 respectively, then press the two first half-open rings 9 on the outside of the telescopic tube 20, then insert the first bolt 12 into the inside of the first circular hole 11 on one side of the first connecting block 10, and screw the first nut 13 on the outside of the first bolt 12 until the telescopic tube 20 is tightly fitted with the inside of the first groove 8, then press the two second half-open rings 15 on the outside of the telescopic tube 20, then insert the second bolt 18 into the inside of the second circular hole 17 on one side of the second connecting block 16, and screw the second nut 13 on the outside of the first bolt 12. 9 is screwed on the outside of the second bolt 18 until the telescopic tube 20 is tightly fitted with the inner side of the second groove 14, so that the protection measures for the plunger body 2 can be completed. When it is necessary to support an object, firstly, hydraulic oil is introduced into the inner side of the hydraulic cylinder body 1, and the plunger body 2 is extended. When the object reaches the appropriate position, the introduction of hydraulic oil is stopped, and then the supporting bolt 5 is screwed. The supporting bolt 5 rotates and moves inside the threaded groove 4 until the rotary joint 6 is tightly fitted with the supporting ring 7. The pressure of the object can be dispersed to each supporting bolt 5 through the supporting ring 7, thereby reducing the pressure of the plunger body 2.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder plunger, comprising a hydraulic cylinder body (1) and a plunger body (2), characterized in that: A fixing ring (3) is fixedly connected to the outer side of one end of the hydraulic cylinder body (1) close to the plunger body (2); a thread groove (4) penetrating the fixing ring (3) is provided on one side of the fixing ring (3); a support bolt (5) is spirally connected to the inner side of the thread groove (4); a rotating joint (6) is fixedly connected to one end of the support bolt (5); and a support ring (7) is fixedly connected to the outer side of the plunger body (2).

2. A hydraulic cylinder plunger according to claim 1, characterized in that: The support ring (7) is provided with a first groove (8) on the outside, a first semi-open ring (9) is provided on the inside of the first groove (8), one end of the first semi-open ring (9) is fixedly connected to a first connecting block (10), one side of the first connecting block (10) is provided with a first circular hole (11) penetrating the first connecting block (10), the inside of the first circular hole (11) is provided with a first bolt (12), the outside of the first bolt (12) is spirally connected to a first nut (13), the outside of the fixing ring (3) is provided with a second groove (14), the inside of the second groove (14) is provided with a second semi-open ring (15), one end of the second semi-open ring (15) is fixedly connected to a second connecting block (16), one side of the second connecting block (16) is provided with a second circular hole (17) penetrating the second connecting block (16), the inside of the second circular hole (17) is provided with a second bolt (18), the outside of the second bolt (18) is spirally connected to a second nut (19), and telescopic tubes (20) are provided on the inside of the first semi-open ring (9) and the second semi-open ring (15).

3. A hydraulic cylinder plunger according to claim 2, characterized in that: The number of the first semi-open rings (9) is two, the number of the first connecting blocks (10), the first circular holes (11), the first bolts (12) and the first nuts (13) are all four, and the inner diameter of the first circular holes (11) is larger than the outer diameter of the first bolts (12).

4. A hydraulic cylinder plunger according to claim 2, characterized in that: The number of the second semi-open rings (15) is two, the number of the second connecting blocks (16), the second circular holes (17), the second bolts (18) and the second nuts (19) are all four, and the inner diameter of the second circular holes (17) is larger than the outer diameter of the second bolts (18).

5. The hydraulic cylinder plunger according to claim 1, characterized in that: The number of the threaded grooves (4), support bolts (5) and rotary joints (6) is six each, and the outer diameters of the fixing ring (3) and the support ring (7) are the same.

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