Hydraulic motor valve body with impact resistance protection function

Abstract

A hydraulic motor valve body with an anti-impact protection function comprises a valve body, a shell is arranged outside the valve body in a sleeving mode, and a buffer assembly is arranged between the valve body and the shell; the buffer assembly comprises an oil pressure buffer and a rubber ring buffer; the oil pressure buffer comprises a second limiting part and a fifth limiting part which are fixedly mounted on the outer surface of the valve body, and a third limiting part and a fourth limiting part which are fixedly mounted on the inner surface of the shell, a first sealing ring is arranged between the second limiting part and the third limiting part, and a second sealing ring is arranged between the fourth limiting part and the fifth limiting part; the space between the valve body and the shell is divided into an oil cavity, a buffering oil hole is formed in the shell, the inner end of the buffering oil hole is communicated with the oil cavity, and the oil cavity is filled with hydraulic oil. The hydraulic motor valve body is simple in structure and convenient to use, the impact-resistant shell is arranged outside the hydraulic motor valve body, impact moment is absorbed in an oil pressure buffering mode and a rubber ring buffering mode, and therefore the probability that the hydraulic motor valve body is damaged due to impact and collision is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic motors, and more particularly to a hydraulic motor valve body with anti-impact protection. Background Art

[0002] Hydraulic motors, also known as oil motors, are mainly used in injection molding machinery, ships, hoists, engineering machinery, construction machinery, coal mining machinery, mining machinery, metallurgical machinery, ship machinery, petrochemical industry, port machinery, etc. They have the advantages of small size, light weight, simple structure, good processability, insensitivity to oil contamination, impact resistance and small inertia.

[0003] During operation, if the hydraulic motor is subjected to impact or collision, faults such as oil leakage, seal damage, oil leakage or component damage may occur, which may cause abnormal noise, oil leakage, temperature increase or insufficient torque of the hydraulic motor. Therefore, it is necessary to provide a hydraulic motor valve body with good impact protection effect to solve the above problems. Utility Model Content

[0004] One advantage of the present invention is that it provides a hydraulic motor valve body with impact protection, which has a simple structure and is easy to use. An impact-resistant shell is provided on the outside of the hydraulic motor valve body, and the impact torque is absorbed by oil pressure buffering and rubber ring buffering, thereby reducing the probability of damage to the hydraulic motor valve body due to impact and collision.

[0005] In order to achieve at least one of the above advantages of the present invention, the present invention provides a hydraulic motor valve body with anti-impact protection, comprising a valve body, an outer shell being provided on the outer surface of the valve body, and a buffer assembly being provided between the valve body and the outer shell;

[0006] The buffer assembly includes oil pressure buffer and rubber ring buffer;

[0007] The oil pressure buffer includes a second limiting portion and a fifth limiting portion fixedly mounted on the outer surface of the valve body, and a third limiting portion and a fourth limiting portion fixedly mounted on the inner surface of the shell. A first sealing ring is provided between the second limiting portion and the third limiting portion, and a second sealing ring is provided between the fourth limiting portion and the fifth limiting portion. The space between the valve body and the shell is divided into an oil chamber. A buffer oil hole is provided on the shell. The inner end of the buffer oil hole is connected to the oil chamber, and the oil chamber is filled with hydraulic oil.

[0008] The rubber ring buffer includes a first limiting part fixedly installed on the outer surface of the valve body, and a protrusion fixedly installed on the inner surface of the shell. The gap between the first limiting part and the second limiting part is a buffer cavity. The protrusion is located in the buffer cavity, and a rubber ring is arranged between the protrusion and the valve body.

[0009] According to an embodiment of the present invention, two groups of rubber ring buffers are provided, which are respectively located at the front and rear ends of the valve body.

[0010] According to an embodiment of the present invention, there are two oil chambers.

[0011] According to an embodiment of the present invention, the buffer oil hole is provided with a sealing plug in a detachable manner.

[0012] According to an embodiment of the present invention, a gap is left between the housing and the first limiting portion for the housing to move.

[0013] According to an embodiment of the present invention, an output shaft is provided at one end of the valve body.

[0014] According to an embodiment of the present invention, a plurality of motor oil holes are provided at the tail end of the valve body.

[0015] According to an embodiment of the present invention, grooves are provided on the second limiting portion, the third limiting portion, the fourth limiting portion and the fifth limiting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] In the accompanying drawings: 1. valve body, 2. output shaft, 3. motor oil hole, 4. outer shell, 5. first limiting part, 6. rubber ring, 7. second limiting part, 8. first sealing ring, 9. third limiting part, 10. buffer oil hole, 11. oil chamber, 12. second sealing ring, 13. fourth limiting part, 14. fifth limiting part, 15. buffer chamber, 16. protrusion. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will be combined with the appendix of the present invention. Figure 1 , the utility model is described in more detail.

[0019] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of the specification, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which 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 orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0021] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0022] The utility model provides a hydraulic motor valve body 1 with impact protection, including a valve body 1, an outer sleeve of the valve body 1 is provided with an outer shell 4, and a buffer assembly is provided between the valve body 1 and the outer shell 4; the buffer assembly includes an oil pressure buffer and a rubber ring 6 buffer; the oil pressure buffer includes a second limiting portion 7 and a fifth limiting portion 14 fixedly mounted on the outer surface of the valve body 1, and a third limiting portion 9 and a fourth limiting portion 13 fixedly mounted on the inner surface of the outer shell 4, a first sealing ring 8 is provided between the second limiting portion 7 and the third limiting portion 9, and a second sealing ring 12 is provided between the fourth limiting portion 13 and the fifth limiting portion 14, the space between the valve body 1 and the outer shell 4 is divided into an oil chamber 11, a buffer oil hole 10 is provided on the outer shell 4, the inner end of the buffer oil hole 10 is connected to the oil chamber 11, and the oil chamber 11 is filled Filled with hydraulic oil; the rubber ring 6 buffer includes a first limit part 5 fixedly mounted on the outer surface of the valve body 1, and a protrusion 16 fixedly mounted on the inner surface of the shell 4. The gap between the first limit part 5 and the second limit part 7 is a buffer cavity 15. The protrusion 16 is located in the buffer cavity 15, and a rubber ring 6 is arranged between the protrusion 16 and the valve body 1; there are two groups of rubber ring 6 buffers, which are respectively located at the front and rear ends of the valve body 1; there are two oil chambers 11; the buffer oil hole 10 is provided with a sealing plug in a detachable manner; a gap is left between the shell 4 and the first limit part 5 for the shell 4 to move; an output shaft 2 is provided at one end of the valve body 1; a plurality of motor oil holes 3 are provided at the tail end of the valve body 1; grooves are provided on the second limit part 7, the third limit part 9, the fourth limit part 13 and the fifth limit part 14.

[0023] The first embodiment of the present utility model is as follows:

[0024] The hydraulic motor valve body 1 with anti-impact protection includes a valve body 1, an output shaft 2 is provided at one end of the valve body 1, and a plurality of motor oil holes 3 are provided at the tail end of the valve body 1. The valve body 1 is the working structure of the hydraulic motor.

[0025] The outer sleeve of the valve body 1 is provided with an outer shell 4, which is made of metal material. Its hard shell itself can play a protective role against impact. A buffer assembly is arranged between the valve body 1 and the outer shell 4. The buffer assembly includes an oil pressure buffer and an rubber ring 6 buffer. The impact torque is absorbed by the oil pressure buffer and the rubber ring 6 buffer, thereby reducing the probability of damage to the hydraulic motor valve body 1 due to impact and collision. The hydraulic buffer can transfer the impact force to the hydraulic oil and absorb the impact force through the flow of hydraulic oil. The rubber ring 6 buffer transfers the impact force to the rubber ring 6 and relieves the impact force through the rubber ring 6.

[0026] The oil pressure buffer includes two oil chambers 11, specifically a second limiting part 7 and a fifth limiting part 14 fixedly mounted on the outer surface of the valve body 1, and a third limiting part 9 and a fourth limiting part 13 fixedly mounted on the inner surface of the outer shell 4. A first sealing ring 8 is arranged between the second limiting part 7 and the third limiting part 9, and a second sealing ring 12 is arranged between the fourth limiting part 13 and the fifth limiting part 14. The space between the valve body 1 and the outer shell 4 is divided into two oil chambers 11 by the first sealing ring 8 and the second sealing ring 12. A buffer oil hole 10 is provided on the outer shell 4. The inner end of the buffer oil hole 10 is connected to the oil chamber 11. The oil chamber 11 is filled with hydraulic oil. When the outer shell 4 is impacted by a collision, the impact force will be transmitted to the hydraulic oil. At the same time, the outer shell 4 will move slightly, thereby causing the hydraulic oil to flow in the oil chamber 11, thereby absorbing the impact force.

[0027] The rubber ring 6 buffer includes a first limiting portion 5 fixedly mounted on the outer surface of the valve body 1, and a protrusion 16 fixedly mounted on the inner surface of the shell 4. The gap between the first limiting portion 5 and the second limiting portion 7 is a buffer cavity 15. The protrusion 16 is located in the buffer cavity 15. A rubber ring 6 is arranged between the protrusion 16 and the valve body 1. When the shell 4 is subjected to a collision impact, the impact force will be transmitted to the rubber ring 6. The rubber ring 6 will be squeezed to produce a small deformation, thereby alleviating the impact force. At the same time, when the rubber ring 6 returns to its original state, the shell 4 will also return to its original position.

[0028] There are two groups of rubber rings 6 provided for buffering, which are located at the front and rear ends of the valve body 1 respectively, to ensure the stability of the housing 4 after being impacted.

[0029] The buffer oil hole 10 is provided with a sealing plug in a detachable manner, which is sealed after the hydraulic oil is injected to prevent leakage, and can also be replenished when the internal hydraulic oil is insufficient.

[0030] A gap is left between the shell 4 and the first limiting portion 5 for the shell 4 to move. When the shell 4 on one side is squeezed to be close to the first limiting portion 5, the sealing ring on the other side is still in contact with each limiting portion. That is to say, in the initial position, the first sealing ring 8 and the second sealing ring 12 are always in an extruded state, which can not only improve the sealing effect, but also prevent the sealing ring from leaking even in the extreme position.

[0031] The second limiting portion 7 , the third limiting portion 9 , the fourth limiting portion 13 and the fifth limiting portion 14 are all provided with grooves, which can limit the positions of the first sealing ring 8 and the second sealing ring 12 to prevent the sealing rings from moving.

[0032] It should be noted that the terms "first, second and third" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0033] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles herein.

Claims

1. A hydraulic motor valve body with anti-impact protection, characterized in that: It comprises a valve body, the outer portion of the valve body is covered with an outer shell, and a buffer assembly is provided between the valve body and the outer shell; The buffer assembly includes an oil pressure buffer and an apron buffer; The oil pressure buffer includes a second limiting portion and a fifth limiting portion fixedly mounted on the outer surface of the valve body, and a third limiting portion and a fourth limiting portion fixedly mounted on the inner surface of the shell, a first sealing ring is provided between the second limiting portion and the third limiting portion, and a second sealing ring is provided between the fourth limiting portion and the fifth limiting portion, the space between the valve body and the shell is divided into an oil chamber, a buffer oil hole is provided on the shell, the inner end of the buffer oil hole is communicated with the oil chamber, and the oil chamber is filled with hydraulic oil; The rubber ring buffer includes a first limiting portion fixedly mounted on the outer surface of the valve body, and a protrusion fixedly mounted on the inner surface of the shell. The gap between the first limiting portion and the second limiting portion is a buffer cavity. The protrusion is located in the buffer cavity. A rubber ring is arranged between the protrusion and the valve body.

2. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: There are two groups of rubber ring buffers, which are respectively located at the front and rear ends of the valve body.

3. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: There are two oil chambers in total.

4. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: The buffer oil hole is provided with a sealing plug in a detachable manner.

5. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: A gap is reserved between the shell and the first limiting portion for the shell to move.

6. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: An output shaft is provided at one end of the valve body.

7. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: The tail end of the valve body is provided with a plurality of motor oil holes.

8. The hydraulic motor valve body with anti-impact protection according to claim 1, characterized in that: The second limiting portion, the third limiting portion, the fourth limiting portion and the fifth limiting portion are all provided with grooves.

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