Vacuum oil injection mechanism of single-barrel nitrogen shock absorber and working principle of vacuum oil injection mechanism

Abstract

The invention discloses a vacuum oil injection mechanism of a single-cylinder nitrogen damper and a working principle thereof, the vacuum oil injection mechanism comprises a left push-pull mechanism, a right push-pull mechanism and a sealing assembly, and the sealing assembly is located between the left push-pull mechanism and the right push-pull mechanism. The single-cylinder nitrogen shock absorber can synchronously complete nitrogen inflation and oil injection of the nitrogen shock absorber, the problem that inflation is carried out after filling and oil injection of a traditional shock absorber is solved, meanwhile, the state that an oil injection cavity is relatively full of oil can be achieved through vacuum oil injection and inflation, and one-time completion is achieved; therefore, insufficient filling of the shock absorber is reduced, secondary inflation operation is avoided, working efficiency is improved, product quality is guaranteed, labor is reduced, and the labor amount of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, and in particular to a vacuum oil injection mechanism of a single-tube nitrogen shock absorber and a working principle thereof. Background Art

[0002] The oil filling and gas charging operations of traditional single-tube nitrogen shock absorbers are all achieved by manual filling or mechanical quantitative filling followed by nitrogen filling. The biggest disadvantage of this filling method is that it cannot ensure that the oil chamber of the shock absorber is completely filled. It will contain air and nitrogen filling needs to be performed twice, which leads to low production efficiency of shock absorber assembly and is time-consuming and labor-intensive. Summary of the invention

[0003] The purpose of the present invention is to provide a single-tube nitrogen shock absorber vacuum oil filling mechanism with a simple structure, reasonable design, high efficiency and convenience in response to the defects and shortcomings of the prior art. The oil filling and inflation are operated synchronously, and the production efficiency is improved.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a single-tube nitrogen shock absorber vacuum oil injection mechanism, whose innovation lies in: it includes a left push-pull mechanism, a right push-pull mechanism and a sealing assembly, and the sealing assembly is located between the left push-pull mechanism and the right push-pull mechanism; the left push-pull mechanism includes a left push-pull cylinder, the piston rod end of the left push-pull cylinder is threadedly connected to an inner connecting sleeve, a sliding sleeve is arranged on the outside of the inner connecting sleeve, and the two are connected by bolts, and a left spring is sleeved on the bolt, and the left spring separates the inner connecting sleeve and the sliding sleeve, and the front ends of the inner connecting sleeve and the sliding sleeve are provided with the same connecting rod locating sleeve, and the front end surface of the connecting rod locating sleeve is provided with a clamping ring mounting groove. , a clamping ring is sleeved in the clamping ring mounting groove, and the clamping ring is restricted between the sliding sleeve and the clamping ring mounting groove; the right push-pull mechanism includes a right push-pull cylinder, a connecting sleeve is arranged at the end of the piston rod of the right push-pull cylinder, a buffer connecting block is arranged outside the connecting sleeve, and the two are connected by bolts, and a right spring is sleeved on the bolt, the right spring separates the connecting sleeve and the buffer connecting block, and a connecting seat and positioning seat are arranged at the front end of the buffer connecting block; the sealing assembly includes a sealing member, a mounting through hole is arranged inside the sealing member, a limiting cylinder is arranged outside the sealing member, the piston rod of the limiting cylinder extends to the inside of the mounting through hole, and an inflation and oil injection hole is also arranged on the sealing member.

[0005] Furthermore, inductive sensors are disposed on the outside of the inner connecting sleeve and the buffer connecting block, inductive brackets are disposed on the outside of the sliding sleeve and the connecting sleeve, and the inductive sensors and inductive brackets work in cooperation with each other.

[0006] A working principle of a vacuum oil injection mechanism for a single-tube nitrogen shock absorber, the innovation of which is that it includes the following steps:

[0007] S1. Prepare product components, put the floating piston on the connecting rod, install the piston valve system on one end of the connecting rod, embed the piston valve system into the installation hole of the seal, then embed the other end of the connecting rod into the connecting rod positioning sleeve, and then put the clamp ring on the clamp ring installation groove. At the same time, install the oil storage outer cylinder between the right push-pull mechanism and the sealing assembly, and embed the opening of the oil storage outer cylinder into the installation hole of the seal;

[0008] S2. The right push-pull cylinder pushes out the connecting sleeve to drive the buffer connecting block and the connecting seat positioning seat to be fixed and positioned. When the right push-pull cylinder pushes the product to the position, the connecting sleeve compresses the right spring to flexibly pre-press the buffer connecting block and the lifting ring positioning seat. The induction sensor contacts the induction bracket, and the induction sensor triggers a signal, the movement stops, and the right side operation is completed;

[0009] S3, the left push-pull cylinder pushes out the inner connecting sleeve to drive the sliding sleeve, pushing the connecting rod positioning sleeve to the set position on the left side to complete the operation;

[0010] S4. After the operation of the left and right sides is completed, the sealing component is vacuumed through the inflation oil injection hole and then inflated with nitrogen, and the inflation is completed;

[0011] S5. After the left push-pull cylinder pushes the sliding sleeve and the connecting rod positioning sleeve into the sealing component and sets the position, the limit cylinder is pushed out to limit the position. At this time, the sealing component is vacuumed through the inflation oil injection hole and the negative pressure is maintained for a certain period of time. When the vacuum in the seal is maintained for a certain period of time and stabilized, vacuum oil is injected through the inflation oil injection hole. After the oil injection in the seal is completed, the limit cylinder is retracted;

[0012] S6, the left push-pull cylinder works again and pushes the sleeve flat to the sealing surface. At this time, the inner connecting sleeve continues to push the compressed left spring to push the sleeve. At the same time, the induction sensor contacts the induction bracket, and the induction sensor triggers a signal, and the movement stops. At the same time, during the movement, the inner connecting sleeve drives the end of the connecting rod positioning sleeve to push the clamping ring out. The clamping ring is automatically released and automatically installed in the installation groove inside the oil storage outer cylinder. At this time, the product is filled with oil and gas.

[0013] S7. When the product is completed with oil filling and air inflation, the left push-pull cylinder pulls the inner connecting sleeve to drive the sliding sleeve to return, and the right push-pull cylinder pulls the connecting sleeve to drive the buffer connecting block and the connecting sleeve to return to the origin mechanism to complete the operation.

[0014] After adopting the above structure, the beneficial effects of the present invention are:

[0015] The present invention can realize the nitrogen charging and oil injection of the single-tube nitrogen shock absorber synchronously, solves the problem of the traditional shock absorber being charged with gas after filling and oiling, and at the same time, the vacuum oil injection and gas injection can realize the state that the oil injection oil chamber is relatively full of oil, which can be completed in one time, thereby reducing the shock absorber from being fully filled and eliminating the secondary operation of gas injection, improving work efficiency, ensuring product quality, reducing labor and reducing the workload of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the working principle of the present invention.

[0018] Description of reference numerals:

[0019] 1 left push-pull mechanism, 11 left push-pull cylinder, 12 inner connecting sleeve, 13 sliding sleeve, 14 left spring, 15 connecting rod positioning sleeve, 2 right push-pull mechanism, 21 right push-pull cylinder, 22 connecting sleeve, 23 buffer connecting block, 24 right spring, 25 connecting seat positioning seat, 3 sealing assembly, 31 sealing, 32 mounting through hole, 33 limiting cylinder, 34 inflation oil injection hole, 4 clamping ring, 5 induction sensor, 6 induction bracket. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Example 1

[0023] See also Figure 1A single-tube nitrogen shock absorber vacuum oil injection mechanism comprises a left push-pull mechanism 1, a right push-pull mechanism 2 and a sealing assembly 3, and the sealing assembly 3 is located between the left push-pull mechanism 1 and the right push-pull mechanism 2; the left push-pull mechanism 1 comprises a left push-pull oil cylinder 11, the piston rod end of the left push-pull oil cylinder 11 is threadedly connected to an inner connecting sleeve 12, a sliding sleeve 13 is arranged outside the inner connecting sleeve 12, and the two are connected by bolts, and a left spring 14 is sleeved on the bolt, and the left spring 14 separates the inner connecting sleeve 12 and the sliding sleeve 13, and the front ends of the inner connecting sleeve 12 and the sliding sleeve 13 are provided with a same connecting rod positioning sleeve 15, and a clamping ring installation groove is arranged outside the front end surface of the connecting rod positioning sleeve 15, and a clamping ring 4 is sleeved in the clamping ring installation groove , and the clamping ring 4 is restricted between the sliding sleeve and the clamping ring mounting groove; the right push-pull mechanism 2 includes a right push-pull cylinder 21, a connecting sleeve 22 is arranged at the end of the piston rod of the right push-pull cylinder 21, an external buffer connecting block 23 of the connecting sleeve 22, and the two are connected by bolts, and a right spring 24 is sleeved on the bolt, the right spring 24 separates the connecting sleeve 22 and the buffer connecting block 23, and a connecting seat and positioning seat 25 is arranged at the front end of the buffer connecting block 23; the sealing assembly 3 includes a sealing member 31, a mounting through hole 32 is arranged inside the sealing member 31, a limiting cylinder 33 is arranged outside the sealing member 31, the piston rod of the limiting cylinder 33 extends to the inside of the mounting through hole, and an inflation oil injection hole 34 is also arranged on the sealing member 31. Specifically, this mechanism utilizes the left push-pull mechanism 1 and the right push-pull mechanism 2 to control the oil cylinder, and then cooperates with the sealing component to quickly realize vacuum extraction and oil injection, and utilizes the sealing performance of the sealing component to perform vacuum pressure oil injection, thereby solving the problem of insufficient oil injection of the single-tube structure shock absorber, and has the characteristics of low cost and flexible assembly; the connecting rod locating sleeve 15 is used to connect the connecting rod, and the other end of the connecting rod is sleeved on the piston valve system and then embedded in the mounting through hole 32; the connecting seat locating seat 25 is used to connect the oil storage outer cylinder, and the opening of the oil storage outer cylinder is embedded in the mounting through hole of the seal, and then cooperates with the inflation oil injection hole 34 to realize vacuum extraction and oil injection; a plurality of sealing rings are arranged inside the seal 31 to ensure the sealing performance.

[0024] In this embodiment, the inductive sensors 5 are arranged outside the inner connecting sleeve 12 and the buffer connecting block 23, and the inductive brackets 6 are arranged outside the sliding sleeve 13 and the connecting sleeve 22, and the inductive sensors 5 and the inductive brackets 6 work in cooperation with each other. After the inductive sensors 5 and the inductive brackets 6 come into contact, a signal is sent out, so that the left push-pull cylinder 11 and the right push-pull cylinder 21 stop working, specifically: when the right push-pull cylinder pushes the product to the position, the connecting sleeve compresses the right spring to perform flexible pre-compression on the buffer connecting block and the lifting ring positioning seat, the inductive sensor contacts the inductive bracket, the inductive sensor triggers a signal, the movement stops, and the right side operation is completed; the left push-pull cylinder pushes the sliding sleeve flat to the sealing plane, at this time the inner connecting sleeve continues to push and compress the left spring to push the sliding sleeve, and at the same time the inductive sensor contacts the inductive bracket, the inductive sensor triggers a signal, and the movement stops.

[0025] Example 2

[0026] The working principle of a vacuum oil injection mechanism of a single-tube nitrogen shock absorber includes the following steps (see Figure 2 ):

[0027] S1. Prepare product components, put the floating piston on the connecting rod, install the piston valve system on one end of the connecting rod, embed the piston valve system into the installation hole of the seal, then embed the other end of the connecting rod into the connecting rod positioning sleeve, and then put the clamp ring on the clamp ring installation groove. At the same time, install the oil storage outer cylinder between the right push-pull mechanism and the sealing assembly, and embed the opening of the oil storage outer cylinder into the installation hole of the seal;

[0028] S2. The right push-pull cylinder pushes out the connecting sleeve to drive the buffer connecting block and the connecting seat positioning seat to be fixed and positioned. When the right push-pull cylinder pushes the product to the position, the connecting sleeve compresses the right spring to flexibly pre-press the buffer connecting block and the lifting ring positioning seat. The induction sensor contacts the induction bracket, and the induction sensor triggers a signal, the movement stops, and the right side operation is completed;

[0029] S3, the left push-pull cylinder pushes out the inner connecting sleeve to drive the sliding sleeve, pushing the connecting rod positioning sleeve to the set position on the left side to complete the operation;

[0030] S4. After the operation of the left and right sides is completed, the sealing component is vacuumed through the inflation oil injection hole and then inflated with nitrogen, and the inflation is completed;

[0031] S5. After the left push-pull cylinder pushes the sliding sleeve and the connecting rod positioning sleeve into the sealing component and sets the position, the limit cylinder is pushed out to limit the position. At this time, the sealing component is vacuumed through the inflation oil injection hole and the negative pressure is maintained for a certain period of time. When the vacuum in the seal is maintained for a certain period of time and stabilized, vacuum oil is injected through the inflation oil injection hole. After the oil injection in the seal is completed, the limit cylinder is retracted;

[0032] S6, the left push-pull cylinder works again and pushes the sleeve flat to the sealing surface. At this time, the inner connecting sleeve continues to push the compressed left spring to push the sleeve. At the same time, the induction sensor contacts the induction bracket, and the induction sensor triggers a signal, and the movement stops. At the same time, during the movement, the inner connecting sleeve drives the end of the connecting rod positioning sleeve to push the clamping ring out. The clamping ring is automatically released and automatically installed in the installation groove inside the oil storage outer cylinder. At this time, the product is filled with oil and gas.

[0033] S7. When the product is completed with oil filling and air inflation, the left push-pull cylinder pulls the inner connecting sleeve to drive the sliding sleeve to return, and the right push-pull cylinder pulls the connecting sleeve to drive the buffer connecting block and the connecting sleeve to return to the origin mechanism to complete the operation.

[0034] In summary, the present invention utilizes the control cylinder and the sealing assembly to quickly realize vacuum oil filling, and utilizes the sealing performance of the sealing assembly to perform vacuum pressure oil filling, thereby solving the problem of inflating after filling and oiling of the traditional shock absorber, thereby improving work efficiency, ensuring product quality, reducing labor and reducing the workload of employees, and having the characteristics of low cost and flexible assembly.

[0035] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A vacuum oil injection mechanism for a single-tube nitrogen shock absorber, characterized in that: It includes a left push-pull mechanism, a right push-pull mechanism and a sealing assembly, and the sealing assembly is located between the left push-pull mechanism and the right push-pull mechanism; the left push-pull mechanism includes a left push-pull oil cylinder, the piston rod end of the left push-pull oil cylinder is threadedly connected to the inner connecting sleeve, a sliding sleeve is arranged outside the inner connecting sleeve, and the two are connected by bolts, and a left spring is sleeved on the bolt, and the left spring separates the inner connecting sleeve and the sliding sleeve, and the front ends of the inner connecting sleeve and the sliding sleeve are provided with the same connecting rod positioning sleeve, and the front end surface of the connecting rod positioning sleeve is provided with a clamping ring installation groove, and the clamping ring is sleeved in the clamping ring installation groove, and the clamping ring is restricted Between the sliding sleeve and the clamping ring mounting groove; the right push-pull mechanism includes a right push-pull cylinder, a connecting sleeve is arranged at the end of the piston rod of the right push-pull cylinder, a buffer connecting block is arranged outside the connecting sleeve, and the two are connected by bolts, and a right spring is sleeved on the bolt, the right spring separates the connecting sleeve and the buffer connecting block, and a connecting seat and positioning seat is arranged at the front end of the buffer connecting block; the sealing assembly includes a sealing member, a mounting through hole is arranged inside the sealing member, a limiting cylinder is arranged outside the sealing member, the piston rod of the limiting cylinder extends to the inside of the mounting through hole, and an inflation and oil injection hole is also arranged on the sealing member.

2. A vacuum oil filling mechanism for a single-tube nitrogen shock absorber according to claim 1, characterized in that: Inductive sensors are arranged outside the inner connecting sleeve and the buffer connecting block, and inductive brackets are arranged outside the sliding sleeve and the connecting sleeve. The inductive sensors and the inductive brackets work in cooperation with each other.

3. The working principle of a vacuum oil injection mechanism of a single-tube nitrogen shock absorber is characterized by: The following steps are involved: S1. Prepare product components, put the floating piston on the connecting rod, install the piston valve system on one end of the connecting rod, embed the piston valve system into the installation hole of the seal, then embed the other end of the connecting rod into the connecting rod positioning sleeve, and then put the clamp ring on the clamp ring installation groove. At the same time, install the oil storage outer cylinder between the right push-pull mechanism and the sealing assembly, and embed the opening of the oil storage outer cylinder into the installation hole of the seal; S2. The right push-pull cylinder pushes out the connecting sleeve to drive the buffer connecting block and the connecting seat positioning seat to be fixed and positioned. When the right push-pull cylinder pushes the product to the position, the connecting sleeve compresses the right spring to flexibly pre-press the buffer connecting block and the lifting ring positioning seat. The induction sensor contacts the induction bracket, and the induction sensor triggers a signal, the movement stops, and the right side operation is completed; S3, the left push-pull cylinder pushes out the inner connecting sleeve to drive the sliding sleeve, pushing the connecting rod positioning sleeve to the set position on the left side to complete the operation; S4. After the operation of the left and right sides is completed, the sealing component is vacuumed through the inflation oil injection hole and then inflated with nitrogen, and the inflation is completed; S5. After the left push-pull cylinder pushes the sliding sleeve and the connecting rod positioning sleeve into the sealing component and sets the position, the limit cylinder is pushed out to limit the position. At this time, the sealing component is vacuumed through the inflation oil injection hole and the negative pressure is maintained for a certain period of time. When the vacuum in the seal is maintained for a certain period of time and stabilized, vacuum oil is injected through the inflation oil injection hole. After the oil injection in the seal is completed, the limit cylinder is retracted; S6, the left push-pull cylinder works again and pushes the sleeve flat to the sealing surface. At this time, the inner connecting sleeve continues to push the compressed left spring to push the sleeve. At the same time, the induction sensor contacts the induction bracket, and the induction sensor triggers a signal, and the movement stops. At the same time, during the movement, the inner connecting sleeve drives the end of the connecting rod positioning sleeve to push the clamping ring out. The clamping ring is automatically released and automatically installed in the installation groove inside the oil storage outer cylinder. At this time, the product is filled with oil and gas. S7. When the product is completed with oil filling and air inflation, the left push-pull cylinder pulls the inner connecting sleeve to drive the sliding sleeve to return, and the right push-pull cylinder pulls the connecting sleeve to drive the buffer connecting block and the connecting sleeve to return to the origin mechanism to complete the operation.

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