Water pump reliability detection device

Abstract

The utility model discloses a reliability detection device for a water pump, which belongs to the technical field of water pump detection and comprises a support, two support plates are symmetrically arranged on the support, the two support plates are vertically arranged and are in up-down sliding fit with the support, a support component for controlling the support plates to move up and down is arranged at the bottom of the support, and a hydraulic cylinder is arranged at the top of each support plate. The hydraulic cylinder is vertically arranged, the output end of the hydraulic cylinder is vertically downward, the output end of the hydraulic cylinder is connected with a pressure sensing device, the output end of the pressure sensing device is connected with a pressing head, a probe is installed at the bottom of the pressing head, a controller is installed on the support, and the supporting assembly, the hydraulic cylinder and the pressure sensing device are all electrically connected with the controller. The supporting assembly comprises an air cylinder and two limiting pieces, the air cylinder is vertically arranged at the bottom of the supporting plate, the output end of the air cylinder is fixedly connected with the supporting plate, the two limiting pieces are arranged on the two sides of the air cylinder, the limiting pieces are connected with the support and the supporting plate, and good products and defective products can be automatically separated.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump detection, and more specifically, to a reliability detection device for a water pump. Background Art

[0002] There will be water overflow holes on the surface of the automotive water pump housing. In the initial stage of the water pump's use, the water pump sealing system is still in the running-in stage, allowing a small amount of coolant to overflow. The overflowing coolant is discharged through the water overflow holes. At the same time, to protect the water pump and the engine, the water overflow holes are pressed and covered with a lid, and a small hole is left. Generally, a press can be used to press the lid on the water overflow port, but there is no quantifiable way to determine whether the pressing process of the lid meets the service standard of the water pump's life. When the lid falls off, it will cause the pulley of the high-speed pregnancy bolt to accelerate the damage of the tensioner pulley, water pump and other components.

[0003] Chinese Patent Application No. CN201821693439.7 discloses a reliability detection structure for the water overflow hole cover of a water pump housing, including a positioning fixture, a water pump housing arranged on the positioning fixture, and a press induction device arranged above the water pump housing. The positioning fixture includes several support columns, and the tops of the several support columns are correspondingly abutted against the side of the water pump housing. There is a water overflow hole in the water pump housing, and a water overflow hole cover is clamped and embedded in the water overflow hole. An opening is drilled through the back position of the water pump housing where the water overflow hole cover is located to expose the water overflow hole cover. The press induction device includes a probe, and the probe is pressed against the water overflow hole cover from the opening position. The utility model realizes the rapid detection of the pressing reliability of the water overflow hole cover.

[0004] When the above solution is implemented, the overall working principle is to detect the magnitude of the static friction force between the cover body and the housing according to the pressure induction device, and compare the static friction force with the set threshold value. If the static friction force is greater than the threshold value, it is qualified; if it is less than the threshold value, it is unqualified. The above solution requires manual judgment based on the numerical value, and then manual separation of the qualified products and unqualified products of the待测产品 (to-be-tested products). Due to long-term manual operation, due to fatigue, operation errors will occur, resulting in the mixing of good products and defective products. At the same time, manual classification will affect the efficiency due to fatigue. To address the above problems, a solution is proposed below. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a reliability detection device for a water pump, which can automatically separate good products and defective products.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A reliability testing device for a water pump includes a bracket with symmetrically arranged support plates. Two support plates are vertically arranged and slide vertically with the bracket. A support assembly for controlling the vertical movement of the support plates is provided at the bottom of the bracket. A hydraulic cylinder is provided at the top of each support plate, with the hydraulic cylinder vertically arranged and its output end pointing vertically downward. A pressure sensing device is connected to the output end of the hydraulic cylinder, and a pressure head is connected to the output end of the pressure sensing device. A probe is installed at the bottom of the pressure head. A controller is installed on the bracket, and the support assembly, hydraulic cylinder, and pressure sensing device are all electrically connected to the controller.

[0008] Preferably, the support assembly includes a cylinder and a limiting member. The cylinder is vertically arranged at the bottom of the support plate and is fixedly connected to the bracket. The output end of the cylinder is vertically upward and is fixedly connected to the bottom of the support plate. Two limiting members are provided, which are symmetrically arranged on both sides of the cylinder and are connected to the bracket and the support plate.

[0009] Preferably, the limiting component includes a limiting rod and a limiting hole. The limiting rod is arranged vertically, one end of the limiting rod is fixedly connected to the bracket, the limiting hole is opened at the bottom of the support plate, the limiting rod passes through the bottom of the limiting hole, and the limiting rod and the limiting hole are slidably engaged.

[0010] Preferably, the pressure sensing device includes a pressure sensor and a connecting assembly. The two ends of the connecting assembly are respectively connected to the pressure head and the output end of the hydraulic cylinder. The pressure sensor is arranged between the hydraulic cylinder and the pressure head. The pressure sensor and the hydraulic cylinder are fixedly connected, and the pressure sensor and the pressure head are in contact with each other.

[0011] Preferably, the connecting assembly includes an outer cylinder and a limiting ring. The outer cylinder is sleeved outside the pressure sensor. The outer cylinder is fixedly connected to the bottom of the hydraulic cylinder. An annular guide groove is formed on the inner side of the outer cylinder. The limiting ring is slidably arranged inside the guide groove. The pressure head passes through the limiting ring. The pressure head and the limiting ring are fixedly connected.

[0012] Preferably, the bracket has a notch, the support plate passes through the notch, and the support plate and the notch are slidably engaged.

[0013] Preferably, the controller is a PLC component.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This solution uses a support plate and a combination of hydraulic cylinders, pressure sensors, pressure heads, and probes to detect the static friction between the housing and the cover, thereby determining whether the connection between the cover and the housing meets the requirements. The controller compares the pressure detected by the pressure sensor with a preset threshold. If the detected value is greater than the preset value, it is considered qualified, and the controller controls one of the support components to retract, and the housing slides down. If the detected value is less than the preset value, it is considered unqualified, and the controller controls the other support component to retract, and the housing slides to the other side, thus separating qualified and unqualified housings. This automatic sorting avoids the trouble of manual operation and improves efficiency.

[0016] Second, the vertical movement of the support plate is controlled by a cylinder, while the limiting component is used to stabilize the vertical movement of the support plate and reduce shaking.

[0017] Third, the limiting effect on the support plate is achieved by the cooperation of the limiting rod and the limiting hole.

[0018] Fourth, a pressure sensor is used to detect static friction, and a connecting assembly is used to connect the pressure head and the output end of the hydraulic cylinder to avoid the pressure head being directly connected to the pressure sensor.

[0019] 5. The outer cylinder and guide groove play a limiting role for the limiting ring, ensuring the stable movement of the limiting ring.

[0020] 6. The notch can also limit the up and down movement of the support plate, reducing swaying. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present utility model;

[0022] Figure 2 This is a side view of the structure of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the support component, bracket, and support plate of this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the hydraulic cylinder, pressure sensing device, and pressure head of this utility model.

[0025] Figure 5 This is a schematic diagram of the connection structure between the bracket and the hydraulic cylinder of this utility model;

[0026] Figure 6 This is a cross-sectional view of the connecting component of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Bracket; 2. Support plate; 3. Support assembly; 4. Hydraulic cylinder; 5. Pressure sensor; 6. Pressure head; 7. Probe; 8. Controller; 9. Cylinder; 10. Limiting component; 11. Limiting rod; 12. Limiting hole; 13. Pressure sensor; 14. Connecting assembly; 15. Outer cylinder; 16. Limiting ring; 17. Guide groove; 18. Notch. Detailed Implementation

[0029] Example 1:

[0030] Please see Figure 1-6 A reliability testing device for a water pump includes a bracket 1. The bracket 1 includes a C-shaped frame and an n-shaped fixing frame installed inside the frame. A controller 8, which is a PLC controller, is installed at the bottom of the fixing frame and is fixedly connected to the frame. The fixing frame has symmetrically arranged recesses 18, and support plates 2 are arranged inside the recesses 18. The two support plates 2 are arranged vertically and slide vertically with the bracket 1. A support assembly 3 for controlling the vertical movement of the support plates 2 is arranged between the frame and the fixing frame. There are two support assemblies 3, each corresponding to one of the two support plates 2. The support assembly 3 includes a cylinder 9 and a limiting member 10. The cylinder 9 is arranged vertically. At the bottom of the support plate 2, the cylinder 9 is fixedly connected to the frame and electrically connected to the controller 8. The output end of the cylinder 9 is vertically upward and fixedly connected to the bottom of the support plate 2. Two limiting members 10 are provided, which are symmetrically arranged on both sides of the cylinder 9. Each limiting member 10 includes a limiting rod 11 and a limiting hole 12. The limiting rod 11 is vertically arranged and one end is fixedly connected to the frame. The limiting hole 12 is opened at the bottom of the support plate 2, and the limiting rod 11 passes through the bottom of the limiting hole 12. The limiting rod 11 and the limiting hole 12 slide together, and the limiting rod 11 and the limiting hole 12 limit the support plate 2 and reduce shaking.

[0031] The cylinder 9 controls the up-and-down movement of the corresponding support plate 2, thereby creating a height difference between the two support plates 2. This causes the outer shell to tilt towards the lower support plate 2 under its own weight, thus facilitating the automatic separation of good and defective products without the hassle of manual separation, reducing the workload, and ensuring accuracy.

[0032] A hydraulic cylinder 4 is installed at the top of the frame, and is fixedly connected to the top of the frame. The hydraulic cylinder 4 is electrically connected to the controller 8. The hydraulic cylinder 4 is vertically arranged, and its output end points vertically downwards. An opening is provided at the top of the frame, through which the output end of the hydraulic cylinder 4 passes, and the output end of the hydraulic cylinder 4 slides into the opening. A pressure sensing device 5 is connected to the output end of the hydraulic cylinder 4. The pressure sensing device 5 includes a pressure sensor 13 and a connecting assembly 14. The pressure sensor 13 is located in the middle of the output end of the hydraulic cylinder 4, and its mounting end is fixedly connected to the output end of the hydraulic cylinder 4. The pressure sensor 13 is electrically connected to the controller 8. The connecting assembly 14 includes an outer cylinder 15 and a limiting ring 16. The outer cylinder 15 is sleeved on the pressure sensor. The outer cylinder 15 and the bottom of the hydraulic cylinder 4 are fixedly connected to the outside of the device 13. An annular guide groove 17 is opened on the inner side of the outer cylinder 15. The limiting ring 16 is slidably arranged inside the guide groove 17. The pressure head 6 is arranged vertically inside the limiting ring 16. The pressure head 6 and the limiting ring 16 are fixedly connected. At the same time, one end of the pressure head 6 is in contact with the output end of the pressure sensor 13. The connecting component 14 is used to connect the pressure head 6. It is not necessary to fix the pressure head 6 to the pressure sensor 13. At the same time, the cooperation between the limiting ring 16 and the guide groove 17 allows the pressure head 6 to have a certain amount of movement. The pressure of the pressure head 6 can be directly transmitted to the pressure sensor 13, thereby ensuring the accuracy of the detection by the pressure sensor 13. A probe 7 is installed at the bottom of the pressure head 6.

[0033] Pressure is applied to the cover by the hydraulic cylinder 4. The static friction between the cover and the shell provides support. The static friction between the cover and the shell is fed back to the pressure sensor 13 through the pressure head 6. The pressure sensor 13 reads the data and transmits it to the controller 8. The controller 8 compares the obtained data with a preset threshold and reacts to separate the shell.

[0034] Working principle:

[0035] In use, the housing is placed on top of the two support plates 2, with the overflow port on the housing corresponding to the pressure head 6. The controller 8 controls the hydraulic cylinder 4 to start, which in turn moves the connecting assembly 14 downwards. The connecting assembly 14 moves the pressure head 6 downwards, and simultaneously moves the probe 7. The probe 7 contacts the cover, applying pressure to it. The static friction between the cover and the housing provides support force, which is transmitted to the pressure sensor 13 via the probe 7 and the pressure head 6. The pressure sensor 13 constantly detects the magnitude of the static friction and transmits the detected data to the controller 8. When the static friction detected by the pressure sensor 13 exceeds the preset data inside the controller 8, the controller 8 controls one of the cylinders 9 to retract. The cylinder 9 then moves the corresponding support plate 2 back from the corresponding recess 18. The internal components retract to the bottom of the fixed frame. The notch 18 and the limiting rod 11 limit the movement of the support plate 2, ensuring the stability of the support plate 2's movement. When the support plate 2 descends, it will create a height difference with the other support plate 2, causing the shell located at the top of the two support plates 2 to tilt. Under its own weight, it will tilt towards the side of the shorter support plate 2 until it falls completely, thus achieving material unloading. When the static friction force detected by the pressure sensor 13 is less than the preset data inside the controller 8, the controller 8 will control the other support plate 2 to retract, that is, the shell will tilt to the other side, thus realizing the differentiation between good and defective products without manual differentiation, reducing the tediousness of manual operation, avoiding errors caused by high labor intensity, and realizing automatic mechanical unloading without manual unloading, reducing safety hazards and improving safety.

Claims

1. A reliability testing device for a water pump, characterized in that: The system includes a bracket (1), on which support plates (2) are symmetrically arranged. The two support plates (2) are vertically arranged and slide vertically with the bracket (1). A support assembly (3) for controlling the vertical movement of the support plates (2) is provided at the bottom of the bracket (1). A hydraulic cylinder (4) is provided at the top of the support plate (2). The hydraulic cylinder (4) is vertically arranged and its output end is vertically downward. A pressure sensing device (5) is connected to the output end of the hydraulic cylinder (4). A pressure head (6) is connected to the output end of the pressure sensing device (5). A probe (7) is installed at the bottom of the pressure head (6). A controller (8) is installed on the bracket (1). The support assembly (3), the hydraulic cylinder (4), and the pressure sensing device (5) are all electrically connected to the controller (8).

2. The reliability testing device for a water pump according to claim 1, characterized in that: The support assembly (3) includes a cylinder (9) and a limiting member (10). The cylinder (9) is vertically arranged at the bottom of the support plate (2). The cylinder (9) is fixedly connected to the bracket (1). The output end of the cylinder (9) is vertically upward and fixedly connected to the bottom of the support plate (2). There are two limiting members (10). The two limiting members (10) are symmetrically arranged on both sides of the cylinder (9). The limiting members (10) are connected to the bracket (1) and the support plate (2).

3. The reliability testing device for a water pump according to claim 2, characterized in that: The limiting member (10) includes a limiting rod (11) and a limiting hole (12). The limiting rod (11) is arranged vertically, and one end of the limiting rod (11) is fixedly connected to the bracket (1). The limiting hole (12) is opened at the bottom of the support plate (2), and the limiting rod (11) passes through the bottom of the limiting hole (12). The limiting rod (11) and the limiting hole (12) are slidably engaged.

4. The reliability testing device for a water pump according to claim 1, characterized in that: The pressure sensing device (5) includes a pressure sensor (13) and a connecting assembly (14). The two ends of the connecting assembly (14) are respectively connected to the output ends of the pressure head (6) and the hydraulic cylinder (4). The pressure sensor (13) is arranged between the hydraulic cylinder (4) and the pressure head (6). The pressure sensor (13) and the hydraulic cylinder (4) are fixedly connected. The pressure sensor (13) and the pressure head (6) are in contact with each other.

5. The reliability testing device for a water pump according to claim 4, characterized in that: The connecting assembly (14) includes an outer cylinder (15) and a limiting ring (16). The outer cylinder (15) is sleeved on the outside of the pressure sensor (13). The outer cylinder (15) is fixedly connected to the bottom of the hydraulic cylinder (4). An annular guide groove (17) is provided on the inner side of the outer cylinder (15). The limiting ring (16) is slidably arranged inside the guide groove (17). The pressure head (6) passes through the limiting ring (16). The pressure head (6) and the limiting ring (16) are fixedly connected.

6. The reliability testing device for a water pump according to claim 1, characterized in that: The bracket (1) has a notch (18) and the support plate (2) passes through the notch (18). The support plate (2) and the notch (18) are slidably fitted together.

7. The reliability testing device for a water pump according to claim 1, characterized in that: The controller (8) uses a PLC component.

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