High-efficiency pulse damping device of high-pressure oil pump
By using a combination of buffer pads and buffer mechanisms in the high-pressure oil pump, the shaking and damage caused by the contact between the output pipe of the oil pump main body and the shell are solved, and multi-layer shock absorption and protection effects are achieved.
Patent Information
- Application Number
- CN202420898026.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During the use of high-pressure oil pump, the output tube of the oil pump main body is easily in contact with the shell, resulting in shaking and potential damage, and the existing shock absorption device is not effective.
A high-efficiency pulse shock absorber is designed, using a cushion pad and a cushioning mechanism, through the tight fit of the cushion pad to the inner wall of the shell and the tension contraction of the strong spring, avoiding hard contact and friction, and using rubber-based connecting outer tubes to provide Additional buffer protection.
It realizes multi-layer shock absorption effect, effectively absorbs and disperses vibration energy, prevents direct contact between the output tube and the shell, reduces shaking amplitude, protects the output end of the oil pump main body, and ensures stable operation.
Smart Images
Figure CN222184986U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure oil pumps, in particular to a high-efficiency pulse damping device for a high-pressure oil pump. Background Art
[0002] The high-pressure oil pump is an important mechanical equipment, which is mainly used to inject the fuel into the engine combustion chamber in the form of high pressure, so as to realize the combustion of the fuel and the normal operation of the engine. It is a key component in the engine fuel system, and its performance directly affects the engine's power, fuel economy and emissions. The working principle of the high-pressure oil pump is mainly based on the working mechanism of the plunger or plunger pump, which pressurizes the fuel to a high-pressure state, and then injects the high-pressure fuel into the engine combustion chamber through a nozzle. The pressure is usually between 1000 and 2000 bar. This high-pressure state can make the fuel better atomized, so as to achieve more complete combustion and improve the power and economy of the engine. There are various types of high-pressure oil pumps, including one-way plunger pumps, two-way plunger pumps, common rail high-pressure oil pumps, etc. Among them, the common rail high-pressure oil pump is the most advanced one at present. It adopts advanced electronic control technology and high-precision fuel injection system, which can achieve more accurate fuel injection and more efficient combustion, thereby greatly improving the performance and economy of the engine.
[0003] The patent document with the authorized announcement number CN218235314U discloses a shock absorbing device for an automobile fuel pump, including a cylinder, sleeves are fixedly connected to the left and right sides of the inner cavity of the cylinder, a first spring is fixedly connected to the surface of the inner cavity of the sleeve, a wedge block is fixedly connected to the other end of the first spring, and a second spring is fixedly connected to the inner cavity of the sleeve. Through the cooperation of the sleeve, the first spring, the wedge block, the second spring, the connecting block and the buffer plate, the fuel pump will vibrate during operation, thereby driving the connecting block to move left and right through the buffer plate. The connecting block generates friction with the wedge block during the left and right movement. The friction converts mechanical energy into heat energy, thereby reducing the vibration amplitude of the fuel pump. Through the cooperation of the third spring, the baffle and the clamping device, the fuel pump can be limited and replaced conveniently, thereby improving the shock absorbing effect and solving the problem that the existing device does not have a shock absorbing effect.
[0004] When the above device and the traditional device are implemented, when the oil pump body is wrapped and protected by the buffer mechanism, the output pipe of the oil pump body often contacts the housing, and the oil pump body shakes, which in turn causes damage to the output end of the oil pump body. Utility Model Content
[0005] The purpose of the utility model is to provide a high-efficiency pulse shock absorbing device for a high-pressure oil pump, which solves the problem that when the above devices and traditional devices are implemented, when the oil pump body is wrapped and protected by the buffer mechanism, the output pipe of the oil pump body often contacts the shell, and the oil pump body shakes, which then causes damage to the output end of the oil pump body.
[0006] An embodiment of the present application provides a high-efficiency pulse shock absorbing device for a high-pressure oil pump, comprising an oil pump body with an outer shell arranged inside the outer shell, output ends on both sides of the oil pump body are respectively slidably penetrated by protective rings, the outer walls of the two protective rings are respectively fixedly connected with connecting covers, a side of the connecting cover close to the outer shell is fixedly connected with a buffer pad installed, and the output end of the oil pump body is slidably penetrated by the buffer pad, the outer wall of the buffer pad is threadedly connected to the inner wall of the outer shell, a pulse sensor is installed inside the output end of the oil pump body, a side of the connecting cover close to the outer shell is fixedly connected with a fixing ring, the fixing ring is fixedly installed with the outer shell by a locking bolt, the buffer pad and the protective ring are made of rubber, and a buffer mechanism for shock absorbing the oil pump body is arranged inside the outer shell.
[0007] By adopting the above technical solution, through the combined use of the buffer pad and the buffer mechanism, a multi-level shock absorption effect is achieved, and the vibration energy is effectively absorbed and dispersed. The design of the buffer pad enables it to fit tightly against the output end of the oil pump body and the inner wall of the outer shell to avoid hard contact and friction, thereby buffering the output end of the oil pump body and protecting the output end of the oil pump body.
[0008] Optionally, the output ends of the two oil pump bodies are respectively installed with connecting outer tubes, and the two connecting outer tubes are made of rubber.
[0009] By adopting the above technical solution, the output end of the oil pump body can be used to connect the external pipe, and the external pipe is made of rubber material, which can play a buffering and protective role between the output end of the oil pump body and other pipes.
[0010] Optionally, the inner wall of the shell is slidably connected with a sound insulation ring, and the sound insulation ring is made of sound insulation cotton.
[0011] By adopting the above technical solution, the noise of the oil pump body can be reduced by setting the sound insulation ring.
[0012] Optionally, the buffer mechanism includes a first inner ring, which is slidably connected to the inner wall of the outer shell.
[0013] By adopting the above technical solution, the first inner ring can be accommodated by the outer shell.
[0014] Optionally, a plurality of groups of strong springs are fixedly connected to the inner wall of the first inner ring, and the plurality of groups of strong springs are arranged in a circular array.
[0015] By adopting the above technical solution, multiple groups of strong springs can be fixed by the first inner ring.
[0016] Optionally, a second inner ring is fixedly connected to one side of the plurality of groups of strong springs away from the first inner ring, and the second inner ring is slidably connected to an outer wall of the oil pump body.
[0017] By adopting the above technical solution, the first inner ring and the second inner ring can be connected by multiple groups of strong springs, and the internal space of the second inner ring can accommodate the oil pump body.
[0018] Optionally, a plurality of groups of the strong springs handle the state of tension contraction, and the first inner ring and the second inner ring are made of rubber.
[0019] By adopting the above technical solution, the tension contraction state of the strong spring provides stable support for the oil pump body, preventing the output pipe from directly contacting the housing.
[0020] Optionally, the buffer pad is adapted to the gap formed between the inner wall of the outer shell, the first inner ring, the second inner ring and the oil pump body.
[0021] By adopting the above technical solution, the buffer pad is designed to fit tightly against the output end of the oil pump body and the inner wall of the shell, avoiding hard contact and friction.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] The technical solution of the present application achieves a multi-level shock-absorbing effect through the combined use of a buffer pad and a buffer mechanism, effectively absorbing and dispersing vibration energy, and the design of the buffer pad enables it to fit tightly between the output end of the oil pump body and the inner wall of the outer shell to avoid hard contact and friction, thereby buffering the output end of the oil pump body and thus protecting the output end of the oil pump body. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0025] Figure 1 It is a front view schematic diagram of a high-efficiency pulse damping device for a high-pressure oil pump according to the utility model;
[0026] Figure 2 It is a front view schematic diagram of a buffer pad of a high-efficiency pulse damping device for a high-pressure oil pump of the utility model;
[0027] Figure 3 It is a schematic diagram of the left side view of a high-efficiency pulse damping device for a high-pressure oil pump according to the utility model;
[0028] Figure 4 The utility model is a high-performance pulse damping device for a high-pressure oil pump Figure 3 Enlarged view of point A in the middle.
[0029] In the figure: 1. outer casing; 2. oil pump body; 3. connecting cover; 4. buffer pad; 5. fixing ring; 6. locking bolt; 7. protective ring; 8. pulse sensor; 9. connecting outer tube; 10. sound insulation ring; 11. first inner ring; 12. strong spring; 13. second inner ring. DETAILED DESCRIPTION
[0030] See also Figure 1-4 The utility model provides a technical solution: a high-efficiency pulse damping device for a high-pressure oil pump, comprising an oil pump body 2 arranged inside the shell 1 with a shell 1, and output ends on both sides of the oil pump body 2 are respectively slidably penetrated with protective rings 7, and the outer walls of the two protective rings 7 are respectively fixedly connected with connecting covers 3, and the connecting cover 3 is fixedly connected with a buffer pad 4 installed on one side close to the shell 1, and the output end of the oil pump body 2 is slidably penetrated through the buffer pad 4, and the outer wall of the buffer pad 4 is threadedly connected to the inner wall of the shell 1, and a pulse sensor 8 is installed inside the output end of the oil pump body 2, and the connecting cover 3 is fixedly connected with a fixing ring 5 on one side close to the shell 1, and the fixing ring 5 is fixedly installed with the shell 1 through a locking bolt 6, and the buffer pad 4 and the protective ring 7 are made of rubber, and a buffer mechanism for damping the oil pump body 2 is arranged inside the shell 1;
[0031] The buffer mechanism includes a first inner ring 11, which is slidably connected to the inner wall of the outer shell 1, and a plurality of groups of strong springs 12 are fixedly connected to the inner wall of the first inner ring 11. The plurality of groups of strong springs 12 are arranged in a circular array, and a second inner ring 13 is fixedly connected to the side of the plurality of strong springs 12 away from the first inner ring 11. The second inner ring 13 is slidably connected to the outer wall of the oil pump body 2. The plurality of groups of strong springs 12 handle the state of tension contraction, and the first inner ring 11 and the second inner ring 13 are made of rubber, and the buffer pad 4 is adapted to the gap formed between the inner wall of the outer shell 1, the first inner ring 11, the second inner ring 13 and the oil pump body 2.
[0032] In the technical solution of the utility model, a multi-level shock-absorbing effect is achieved through the combined use of the buffer pad 4 and the buffer mechanism, and the vibration energy is effectively absorbed and dispersed. The design of the buffer pad 4 enables it to fit tightly between the output end of the oil pump body 2 and the inner wall of the outer shell 1 to avoid hard contact and friction, thereby buffering the output end of the oil pump body 2 and protecting the output end of the oil pump body 2.
[0033] In addition, the outer shell 1 can be used to store the first inner ring 11, and the first inner ring 11 can fix multiple groups of strong springs 12. The multiple groups of strong springs 12 can connect the first inner ring 11 and the second inner ring 13, and the internal space of the second inner ring 13 can store the oil pump body 2. The tension contraction state of the strong spring 12 provides stable support for the oil pump body 2 to prevent direct contact between the output pipe and the shell. The design of the buffer pad 4 enables it to fit tightly between the output end of the oil pump body 2 and the inner wall of the outer shell 1 to avoid hard contact and friction.
[0034] In the technical solution of the utility model, if Figure 1 , Figure 3 and Figure 4 As shown, the output ends of the two oil pump bodies 2 are respectively equipped with connecting outer tubes 9, and the two connecting outer tubes 9 are made of rubber. The output ends of the oil pump bodies 2 can be used to connect the connecting outer tubes 9, and the connecting outer tubes 9 are made of rubber material, which can play a buffering and protective role between the output ends of the oil pump bodies 2 and other pipelines. The inner wall of the outer shell 1 is slidably connected with a sound insulation ring 10, and the sound insulation ring 10 is made of sound insulation cotton. The setting of the sound insulation ring 10 can reduce the noise of the oil pump bodies 2.
[0035] When in use, the oil pump body 2 can be first installed inside the housing 1, and its output end passes through the protective ring 7 and slides through the buffer pad 4. The outer wall of the buffer pad 4 is threadedly connected with the inner wall of the housing 1. The fixing ring 5 is fixedly installed with the housing 1 through the locking bolt 6 to ensure the stability of the connection cover 3 and the buffer pad 4. The buffer mechanism includes a first inner ring 11, a strong spring 12 and a second inner ring 13 that have been installed in the housing 1 and are in a pre-tightened state to provide initial support and shock absorption effect for the oil pump body 2;
[0036] When the oil pump body 2 starts to work, the output end starts to deliver high-pressure fuel. Due to the flow of high-pressure fuel and the operation of the oil pump body 2, certain vibrations and pulses will be generated;
[0037] The buffer pad 4 serves as the first line of defense to absorb and disperse the vibration and impact transmitted from the output end of the oil pump body 2. When the vibration is transmitted to the buffer mechanism, the strong spring 12 starts to work, using its elastic deformation to absorb the vibration energy and convert it into the compression potential energy of the spring. Under the action of the strong spring 12, the first inner ring 11 and the second inner ring 13 are closely attached to the outer wall of the oil pump body 2 to form a continuous shock-absorbing layer, which effectively isolates and reduces the vibration transmission;
[0038] During the operation of the oil pump body 2, if there is shaking, the synergistic effect of the buffer pad 4 and the buffer mechanism will significantly reduce the amplitude of the shaking. The design of the buffer pad 4 makes the contact between the output end of the oil pump body 2 and the inner wall of the shell 1 soft, avoiding hard contact and friction. At the same time, the tension contraction state of the strong spring 12 provides a stable support for the oil pump body 2, preventing the direct contact between the output pipe and the shell, and reducing the potential damage caused by shaking.
[0039] As the oil pump body 2 continues to operate, the buffer pad 4 and the buffer mechanism will continue to play a role, ensuring that the oil pump body 2 operates in a stable and safe state; and the pulse sensor 8 is an existing technology, which can monitor the oil pressure output by the oil pump;
[0040] The staff regularly checks the condition of the buffer pad 4 and the buffer mechanism to ensure that they are in good working condition and replaces the seriously worn parts in time to ensure long-term and effective shock absorption effect.
Claims
1. A high-efficiency pulse damping device for a high-pressure oil pump, characterized in that: The invention comprises an outer shell (1) and an oil pump body (2) arranged inside the outer shell (1); output ends on both sides of the oil pump body (2) are respectively slidably penetrated by protective rings (7); the outer walls of the two protective rings (7) are respectively fixedly connected with connecting covers (3); a side of the connecting cover (3) close to the outer shell (1) is fixedly connected with a buffer pad (4) installed thereon; and the output end of the oil pump body (2) is slidably penetrated by the buffer pad (4); the outer wall of the buffer pad (4) is threadedly connected to the inner wall of the outer shell (1); a pulse sensor (8) is installed inside the output end of the oil pump body (2); a side of the connecting cover (3) close to the outer shell (1) is fixedly connected with a fixing ring (5); the fixing ring (5) is fixedly installed with the outer shell (1) by a locking bolt (6); the buffer pad (4) and the protective ring (7) are made of rubber; and a buffer mechanism for shock absorbing the oil pump body (2) is arranged inside the outer shell (1).
2. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 1, characterized in that: The output ends of the two oil pump bodies (2) are respectively provided with connecting outer tubes (9), and the two connecting outer tubes (9) are made of rubber material.
3. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 1, characterized in that: The inner wall of the outer shell (1) is slidably connected to a sound insulation ring (10), and the sound insulation ring (10) is made of sound insulation cotton.
4. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 1, characterized in that: The buffer mechanism comprises a first inner ring (11), wherein the first inner ring (11) is slidably connected to the inner wall of the outer shell (1).
5. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 4, characterized in that: The inner wall of the first inner ring (11) is fixedly connected to a plurality of groups of strong springs (12), and the plurality of groups of strong springs (12) are arranged in a circular array.
6. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 5, characterized in that: A second inner ring (13) is fixedly connected to one side of the plurality of groups of strong springs (12) away from the first inner ring (11), and the second inner ring (13) is slidably connected to the outer wall of the oil pump body (2).
7. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 6, characterized in that: A plurality of groups of strong springs (12) are used to handle the state of tension contraction, and the first inner ring (11) and the second inner ring (13) are made of rubber.
8. A high-efficiency pulse damping device for a high-pressure oil pump according to claim 7, characterized in that: The buffer pad (4) is adapted to the gap formed between the inner wall of the outer shell (1), the first inner ring (11), the second inner ring (13) and the oil pump body (2).