Servo hydraulic device with load reduction structure
By introducing hydraulic accumulators and solenoid valve components into the servo hydraulic device, the problem of insufficient pressure adjustment in the pipeline press is solved, the accuracy of pressure adjustment and the reduction of load are achieved, and the service life of the device is extended.
Patent Information
- Application Number
- CN202422441527.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The servo hydraulic devices of existing pipeline press testers have problems of singularity and insufficient accuracy in pressure regulation, resulting in reduced service life and abnormal detection.
The servo hydraulic device with a load-reducing structure is adopted, including a hydraulic accumulator, a solenoid valve assembly and a T-type three-way valve. Through hydraulic pump speed adjustment, solenoid valve auxiliary control and pressure energy storage and release of the hydraulic accumulator, the accuracy of pressure adjustment and load unloading are achieved.
It improves the accuracy of pressure adjustment, reduces the load on the servo hydraulic device, extends the service life, and ensures the stable operation of the pipeline press.
Smart Images
Figure CN223136502U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of servo hydraulic devices for pipeline testing presses, and particularly relates to a servo hydraulic device with a load reduction structure. Background Art
[0002] A pipeline testing press is a device dedicated to detecting the integrity and strength of a pipeline system. By filling the pipeline with water, gas or other media and pressurizing it to a certain standard, the sealing performance and pressure resistance of the pipeline can be tested. The servo hydraulic device in the pipeline testing press can control the system pressure. However, in actual use, due to excessive pressure, it may cause a large load on its related components, resulting in a reduced service life. Most of the common servo hydraulic devices of pipeline testing presses only reduce the rotational speed through a single hydraulic pump and other means to achieve the effect of load reduction. This load reduction method is too single and the control accuracy is not high. In actual use, it is easy to cause problems in pressure adjustment, making the pipeline testing press operate abnormally, which is not conducive to the detection of external pipelines by the pipeline testing press.
[0003] In summary, there are some problems in using a single hydraulic pump for pressure regulation in use. Therefore, it is hoped to propose a new structure to solve the above technical problems. Summary of the Invention
[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a servo hydraulic device with a load reduction structure to solve the problems put forward in the above background art.
[0005] The utility model is realized through the following technical solutions: A servo hydraulic device with a load reduction structure, comprising: a servo hydraulic device main body, a support bracket, and a load reduction mechanism. A fuel tank is provided at the lower end of the internal composition of the servo hydraulic device main body. A support bracket for supporting the hydraulic accumulator is fixedly connected to the rear side of the fuel tank. A placement rack for installing hydraulic components is provided above the fuel tank. An oil outlet pipe is provided at the rear end above the placement rack. An oil outlet pipe flange one is fixedly connected to the rear of the oil outlet pipe. A load reduction mechanism for load reduction is provided behind the oil outlet pipe flange one. A hydraulic accumulator is provided at the upper right end of the internal composition of the load reduction mechanism.
[0006] As a preferred implementation manner, a set of oil outlet pipe flanges two are provided at both the front and rear ends of the internal composition of the load reduction mechanism. The front oil outlet pipe flange two is attached to and fixedly connected to the oil outlet pipe flange one through bolts. Connecting between the oil outlet pipe flange one and the oil outlet pipe flange two can connect the load reduction mechanism and the servo hydraulic device main body.
[0007] As a preferred embodiment, a T-shaped three-way valve for realizing variable-direction conduction is installed between the front and rear groups of the second oil outlet pipe flanges through flange connection, and a second return pipe flange for connecting with the return pipe is fixedly arranged at the right end of the T-shaped three-way valve.
[0008] As a preferred embodiment, a solenoid valve assembly for assisting in load reduction is arranged at the left end above the placement rack, a hydraulic pump is arranged at the right end above the placement rack, and the right end of the rear of the fuel tank is fixedly connected with a return pipe and is mutually communicated with the inside of the fuel tank, which can control the rotation speed of the hydraulic pump for pressure control and use the solenoid valve assembly for auxiliary control to improve the accuracy of pressure regulation.
[0009] As a preferred embodiment, a first return pipe flange is arranged at the end of the upper left of the return pipe, and a first stop valve is arranged on the right side of the first return pipe flange;
[0010] The first return pipe flange and the second return pipe flange are mutually attached and fixedly connected by bolts. A second stop valve is arranged on the left side of the hydraulic accumulator. The T-shaped three-way valve is used to change the pipeline direction, so that the hydraulic oil flows back to the fuel tank through the return pipe, which can assist in load unloading.
[0011] As a preferred embodiment, a set of first clamping half-rings for clamping the outside of the hydraulic accumulator are fixedly connected to the upper end of the supporting bracket. A second clamping half-ring is arranged in front of the first clamping half-ring, and connecting plates are arranged on the left sides of the first clamping half-ring and the second clamping half-ring.
[0012] As a preferred embodiment, a clamping rotating shaft is arranged at the right end between the first clamping half-ring and the second clamping half-ring. The first clamping half-ring and the second clamping half-ring clamp the outside of the hydraulic accumulator and are fixedly connected by bolts. Clamping the first clamping half-ring and the second clamping half-ring to the outside of the hydraulic accumulator can support the load reduction mechanism.
[0013] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows: By adding the servo hydraulic device main body and the load reduction mechanism, during use, the rotation speed can be adjusted by the hydraulic pump according to requirements, and the solenoid valve assembly is used for auxiliary adjustment to improve the accuracy of pressure regulation, and the hydraulic accumulator can be used for storing and releasing pressure energy, so as to achieve the effect of load reduction. By adding the servo hydraulic device main body and the load reduction mechanism, the load reduction mechanism is installed and fixed through the connection between the second oil outlet pipe flange and the first oil outlet pipe flange. Clamping the first clamping half-ring and the second clamping half-ring to the outside of the hydraulic accumulator can support the load reduction mechanism. Description of the Drawings
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0015] Figure 1 It is a schematic diagram of the overall structure of a servo hydraulic device with a load reduction structure according to the present invention.
[0016] Figure 2 It is a schematic diagram of the structure of the servo hydraulic device main body in a servo hydraulic device with a load reduction structure according to the present invention.
[0017] Figure 3 It is a schematic diagram of the structure of the load reduction mechanism in a servo hydraulic device with a load reduction structure according to the present invention.
[0018] In the figure, 100 - servo hydraulic device main body, 101 - fuel tank, 102 - support bracket, 103 - engaging half - ring one, 104 - engaging half - ring two, 105 - connecting plate, 106 - solenoid valve assembly, 107 - oil outlet pipe, 108 - oil outlet pipe flange one, 109 - oil return pipe, 110 - stop valve one, 111 - oil return pipe flange one;
[0019] 200 - load reduction mechanism, 201 - oil outlet pipe flange two, 202 - T - shaped three - way valve, 203 - oil return pipe flange two, 204 - stop valve two, 205 - hydraulic accumulator. Specific embodiments
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0021] Please refer to Figures 1 to 3 , the present invention provides a technical solution: a servo hydraulic device with a load reduction structure, including: a servo hydraulic device main body 100, a support bracket 102, and a load reduction mechanism 200. The lower end of the internal composition of the servo hydraulic device main body 100 is provided with a fuel tank 101;
[0022] A support bracket 102 for supporting the hydraulic accumulator 205 is fixedly connected to the rear side of the fuel tank 101. A placement rack for installing hydraulic components is provided above the fuel tank 101, and an oil outlet pipe 107 is provided at the rear end above the placement rack;
[0023] An oil outlet pipe flange 108 is fixedly connected to the rear of the oil outlet pipe 107. A load reduction mechanism 200 for reducing the load is provided behind the oil outlet pipe flange 108. The hydraulic accumulator 205 is provided at the upper right end of the internal composition of the load reduction mechanism 200.
[0024] A set of oil outlet pipe flanges 201 are provided at both the front and rear ends of the internal composition of the load reduction mechanism 200. The front oil outlet pipe flange 201 is in mutual fit with the oil outlet pipe flange 108 and is fixedly connected by bolts. Connecting between the oil outlet pipe flange 108 and the oil outlet pipe flange 201 can connect the load reduction mechanism 200 and the servo hydraulic device main body 100.
[0025] A T-shaped three-way valve 202 for realizing variable-direction conduction is installed between the front and rear two groups of oil outlet pipe flanges 201 by flange connection. A return oil pipe flange 203 for connecting with the return oil pipe 109 is fixedly provided at the right end of the T-shaped three-way valve 202.
[0026] An electromagnetic valve assembly 106 for assisting in load reduction is provided at the left end above the placement rack. A hydraulic pump is provided at the right end above the placement rack. A return oil pipe 109 is fixedly connected to the rear right end of the fuel tank 101 and is in mutual communication with the inside of the fuel tank 101, which can control the rotational speed of the hydraulic pump for pressure control and use the electromagnetic valve assembly 106 for auxiliary control to improve the accuracy of pressure regulation.
[0027] A return oil pipe flange 111 is provided at the left upper end of the return oil pipe 109, and a stop valve 110 is provided on the right side of the return oil pipe flange 111;
[0028] The return oil pipe flange 111 is in mutual fit with the return oil pipe flange 203 and is fixedly connected by bolts. A stop valve 204 is provided on the left side of the hydraulic accumulator 205. Using the T-shaped three-way valve 202 to change the pipeline direction, the hydraulic oil flows back to the fuel tank 101 through the return oil pipe 109, which can assist in load unloading.
[0029] Please refer to Figures 1 - 3, as the first embodiment of the present utility model: First, the user fits the second oil outlet flange 201 with the first oil outlet flange 108 and fixes them by bolt connection, which can connect the load reduction mechanism 200 with the main body 100 of the servo hydraulic device. During the use of the pipeline testing press, the rotational speed of the hydraulic pump can be controlled for pressure control, and the solenoid valve assembly 106 can be used for auxiliary control to improve the accuracy of pressure regulation. The hydraulic accumulator 205 can be used for storing and releasing pressure energy. Secondly, when there is no task, the T-shaped three-way valve 202 is controlled to change the direction of the pipeline, so that the refined hydraulic oil return pipe 109 flows back to the oil tank 101, which can assist in load unloading, thereby achieving the effect of load reduction.
[0030] A set of first engaging half-rings 103 for engaging the outside of the hydraulic accumulator 205 are fixedly connected to the upper end of the support bracket 102. A second engaging half-ring 104 is provided on the front side of the first engaging half-ring 103, and connecting plates 105 are provided on the left sides of both the first engaging half-ring 103 and the second engaging half-ring 104.
[0031] A engaging rotating shaft is provided at the right end between the first engaging half-ring 103 and the second engaging half-ring 104. The first engaging half-ring 103 and the second engaging half-ring 104 engage the outside of the hydraulic accumulator 205 and are fixed by bolt connection. When the first engaging half-ring 103 and the second engaging half-ring 104 are engaged to the outside of the hydraulic accumulator 205, the load reduction mechanism 200 can be supported.
[0032] Please refer to Figures 1 - 3 , as the second embodiment of the present utility model: Based on the above first embodiment, the user installs and fixes the load reduction mechanism 200 through the connection between the second oil outlet flange 201 and the first oil outlet flange 108. After the installation is completed, the first engaging half-ring 103 and the second engaging half-ring 104 are engaged to the outside of the hydraulic accumulator 205, which can enable the support bracket 102 to assist in supporting the load reduction mechanism 200.
[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A servo-hydraulic device with a load-reducing structure, comprising: Servo hydraulic device main body (100), supporting bracket (102) and load reduction mechanism (200), characterized in that: a fuel tank (101) is provided at the lower end of the internal components of the servo hydraulic device main body (100); A supporting bracket (102) for supporting the hydraulic accumulator (205) is fixedly connected to the rear side of the fuel tank (101). A placement rack for installing hydraulic components is provided above the fuel tank (101), and an oil outlet pipe (107) is provided at the rear end above the placement rack; An oil outlet pipe flange one (108) is fixedly connected to the rear of the oil outlet pipe (107). A load reduction mechanism (200) for reducing load is provided behind the oil outlet pipe flange one (108). A hydraulic accumulator (205) is provided at the upper right end of the internal components of the load reduction mechanism (200).
2. The servo hydraulic device with a load reduction structure according to claim 1, characterized in that: A set of oil outlet pipe flanges two (201) are provided at both the front and rear ends of the internal components of the load reduction mechanism (200). The front oil outlet pipe flange two (201) is in contact with the oil outlet pipe flange one (108) and is fixedly connected by bolts.
3. The servo hydraulic device with a load reduction structure according to claim 2, characterized in that: A T-shaped three-way valve (202) for realizing variable-direction conduction is installed between the front and rear two sets of oil outlet pipe flanges two (201) through flange connection. A return pipe flange two (203) for connecting with the return pipe (109) is fixedly provided at the right end of the T-shaped three-way valve (202).
4. The servo-hydraulic device with a load reduction structure according to claim 3, wherein: An electromagnetic valve assembly (106) for assisting in load reduction is provided at the upper left end of the placement rack. A hydraulic pump is provided at the upper right end of the placement rack. A return pipe (109) is fixedly connected to the rear right end of the fuel tank (101) and is internally connected to the fuel tank (101).
5. The servo hydraulic device with a load reduction structure according to claim 4, characterized in that: A return pipe flange one (111) is provided at the left upper end of the end of the return pipe (109). A stop valve one (110) is provided on the right side of the return pipe flange one (111); The return pipe flange one (111) is in contact with the return pipe flange two (203) and is fixedly connected by bolts. A stop valve two (204) is provided on the left side of the hydraulic accumulator (205).
6. The servo hydraulic device with a load reduction structure according to claim 1, characterized in that: A set of engaging semi-rings one (103) for engaging the outside of the hydraulic accumulator (205) are fixedly connected to the upper end of the supporting bracket (102). An engaging semi-ring two (104) is provided on the front side of the engaging semi-ring one (103). Connecting plates (105) are provided on the left sides of both the engaging semi-ring one (103) and the engaging semi-ring two (104).
7. The servo hydraulic device with a load reduction structure according to claim 6, characterized in that: A engaging rotating shaft is provided at the right end between the engaging semi-ring one (103) and the engaging semi-ring two (104). The engaging semi-ring one (103) and the engaging semi-ring two (104) engage the outside of the hydraulic accumulator (205) and are fixedly connected by bolts.