A device for testing the sealing performance of end caps for hydraulic pumps

Abstract

This utility model relates to the technical field of sealing testing devices, and more particularly to a device for testing the sealing performance of end caps for hydraulic pumps. The technical solution includes: an automatic conveyor, a support frame at one end of the automatic conveyor, a pressing mechanism on one side of the support frame, side plates on both sides of the inner wall of the automatic conveyor near the support frame, clamping mechanisms on the sides of the two sets of side plates close to each other, and an airtightness testing mechanism on one side of the support frame, the airtightness testing mechanism including an air pump located on one side of the support frame. This utility model uses an automatic conveyor to transport hydraulic pump end caps, the side plates and clamping mechanisms to guide and stabilize the end caps during transport, and the pressing mechanism and airtightness testing mechanism work together to quickly perform sealing performance testing on the end caps, ensuring the stability of the end caps during the sealing performance testing process and greatly improving the efficiency of the end cap testing operation.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing testing devices, and in particular to a device for testing the sealing performance of end caps for hydraulic pumps. Background Technology

[0002] The end cap of a hydraulic pump is a crucial component of the hydraulic pump assembly, typically used to seal both ends of the pump and protect internal parts from external environmental influences. It is usually made of cast iron, aluminum alloy, stainless steel, or other corrosion-resistant and high-pressure-resistant materials to ensure the pump's reliability and sealing performance. After the hydraulic pump end caps are manufactured, their sealing performance needs to be tested. Existing sealing performance testing equipment often relies on operators manually placing the end caps at the testing points before starting the test. This method is unstable when the end caps are in place, reducing the accuracy of the test data and the efficiency of the testing process. Furthermore, the operator's hand being placed inside the testing area poses a safety hazard. Therefore, we propose a hydraulic pump end cap sealing performance testing device. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background art by proposing a device for testing the sealing performance of end caps for hydraulic pumps.

[0004] The technical solution of this utility model: A hydraulic pump end cap sealing performance testing device, including an automatic conveyor, a stand at one end of the automatic conveyor, a pressing mechanism on one side of the stand, a mounting platform, a cylinder on the mounting platform, a connecting plate at the output end of the cylinder, a connecting seat above the connecting plate directly below the cylinder output end, an airtightness test cover below the connecting plate, and multiple sets of shock-absorbing rods between the connecting plate and the airtightness test cover. Side plates are provided on both sides of the inner wall of the conveyor near the upright end. Clamping mechanisms are provided on the side of the two sets of side plates that are close to each other. Each clamping mechanism includes an electric push rod provided on one side of the upright. A clamping plate is provided at the output end of the electric push rod. Two sets of guide rods are provided on the side of the two sets of clamping plates that are far from each other. An airtightness detection mechanism is provided on one side of the upright. The airtightness detection mechanism includes an air pump located on one side of the upright. An air pipe is connected to the air outlet end of the air pump. An airtightness detection base is provided on the end of the air pipe that is far from the air pump.

[0005] Preferably, a U-shaped assembly groove is provided on the side of the upright frame near the automatic conveyor, and one end of the automatic conveyor is installed corresponding to the inner wall of the upright frame.

[0006] Preferably, the mounting end of the mounting platform is installed corresponding to one side of the inner wall of the upright, the mounting end of the cylinder is installed corresponding to one side of the upper part of the mounting platform, and the output end of the cylinder is installed corresponding to one side of the connecting seat.

[0007] Preferably, a guide rail is provided on one side of the inner wall of the support frame below the mounting platform, the mounting end of the connecting plate is installed corresponding to the slider on the guide rail, the mounting end of the connecting seat is installed corresponding to the upper side of the connecting plate, the two ends of the shock absorber are respectively installed corresponding to the sides of the connecting plate and the airtightness detection cover that are close to each other, and a pressure sensor is provided on the side of the airtightness detection cover away from the connecting plate.

[0008] Preferably, the mounting end of the side plate is installed corresponding to the inner wall of the automatic conveyor, one side of the side plate is set in an inclined shape, the upper and lower sides of the clamping plate are in contact with the inner wall of the side plate, one side of the clamping plate is set in an arc shape, and one end of the guide rod is installed corresponding to one side of the clamping plate.

[0009] Preferably, the mounting end of the electric push rod is installed corresponding to one side of the upright frame, and multiple sets of shaft holes are correspondingly opened on the automatic conveyor, the upright frame and the side plate. The output end and the guide rod of the electric push rod are respectively installed corresponding to the shaft holes.

[0010] Preferably, a base plate is provided at the bottom of the inner wall of the upright frame, and the mounting end of the airtightness testing base is installed corresponding to the top of the base plate. When the airtightness testing base is in the assembled state, its height is consistent with the height of the conveying roller on the automatic conveyor. One end of the air pipe is installed corresponding to the air outlet end of the air pump, and the other end of the air pipe is installed corresponding to the airtightness testing base. A position sensor is provided on the airtightness testing base.

[0011] Compared with the prior art, the present invention has the following beneficial technical effects:

[0012] This utility model has a compact overall structure. The hydraulic pump end cap can be transported by the automatic conveyor. The end cap can be guided and stably positioned during the transport process by the side plate and the clamping mechanism. The sealing performance test of the end cap can be quickly performed by the pressing mechanism and the airtightness test mechanism, which ensures the stability of the end cap in the sealing performance test and greatly improves the efficiency of the end cap test. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0015] Figure 3 This is a partial cross-sectional view of the present invention.

[0016] Reference numerals: 1. Automatic conveyor; 2. Frame; 3. Pressing mechanism; 31. Mounting platform; 32. Cylinder; 33. Connecting plate; 34. Connecting seat; 35. Air tightness test cover; 36. Shock absorber; 37. Pressure sensor; 4. Side plate; 5. Clamping mechanism; 51. Electric push rod; 52. Clamping plate; 53. Guide rod; 6. Base plate; 7. Air tightness test mechanism; 71. Air pump; 72. Air pipe; 73. Air tightness test base; 74. Position sensor; 8. Guide rail. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example

[0019] like Figure 1-3 As shown, this utility model proposes a hydraulic pump end cap sealing performance testing device, including an automatic conveyor 1. A stand 2 is installed at one end of the automatic conveyor 1. A U-shaped assembly groove is opened on the side of the stand 2 near the automatic conveyor 1. One end of the automatic conveyor 1 is installed correspondingly to the inner wall of the stand 2 and is fixedly connected to the inner wall of the assembly groove. An airtightness testing mechanism 7 is installed on one side of the stand 2. The airtightness testing mechanism 7 includes an air pump 71 located on one side of the stand 2. One side of the air pump 71 is in close contact with the stand 2 and is stably placed on the ground. An air pipe 72 is connected to the air outlet of the air pump 71. One end of the air pipe 72 is installed correspondingly to the air outlet of the air pump 71 and is fixedly connected to the air outlet of the air pump 71. An airtightness testing base 73 is installed at the end of the air pipe 72 away from the air pump 71, and the other end of the air pipe 72 is connected to the airtightness testing base 73. 3. Corresponding installation: The other end of the air pipe 72 is fixedly connected to the air inlet port of the airtightness testing base 73. A position sensor 74 is installed on the airtightness testing base 73. A second detection hole is opened on the airtightness testing base 73. The mounting end of the position sensor 74 is fixedly connected to the second detection hole. A base plate 6 is installed at the bottom of the inner wall of the upright 2. The mounting end of the base plate 6 is fixedly connected to the upright 2. The mounting end of the airtightness testing base 73 is installed correspondingly above the base plate 6. The mounting end of the airtightness testing base 73 is fixedly connected to the upper side of the base plate 6. When the airtightness testing base 73 is in the assembled state, its height is consistent with the height of the conveyor roller on the automatic conveyor 1. The setting that the height of the airtightness testing base 73 is consistent with the height of the conveyor roller on the automatic conveyor 1 makes it easier for the end cap to be transported to the airtightness testing base 73 by the automatic conveyor 1. The setting of the airtightness testing mechanism 7 can perform the sealing performance test of the end cap.

[0020] A pressing mechanism 3 is provided on one side of the upright frame 2. The pressing mechanism 3 includes a mounting platform 31. The mounting end of the mounting platform 31 is installed corresponding to one side of the inner wall of the upright frame 2. The mounting platform 31 is L-shaped. One side of the mounting platform 31 is fixedly connected to the upright frame 2. A cylinder 32 is provided on the mounting platform 31. The mounting end of the cylinder 32 is installed corresponding to the upper side of the mounting platform 31. The mounting end of the cylinder 32 is fixedly connected to the mounting platform 31. A connecting plate 33 is provided at the output end of the cylinder 32. A guide rail 8 is provided on one side of the inner wall of the upright frame 2 below the mounting platform 31. The mounting end of the guide rail 8 is fixedly connected to the upright frame 2. The mounting end of the connecting plate 33 is installed corresponding to the slider on the guide rail 8. The mounting end of the connecting plate 33 is fixedly connected to one side of the slider on the guide rail 8. The guide rail 8 guides the movement of the connecting plate 33, making it more stable during movement and thus making the sealing performance testing of the hydraulic pump end cover more stable. A connecting seat 34 is located above the connecting plate 33, directly below the output end of the cylinder 32. The mounting end of the connecting seat 34 is installed corresponding to one side of the upper part of the connecting plate 33 and is fixedly connected to the connecting plate 33. The output end of the cylinder 32 is installed corresponding to one side of the connecting seat 34 and is fixedly connected to one side of the connecting seat 34. The connecting seat 34 allows the hydraulic pump end cover to be moved more smoothly. Cylinder 32 drives connecting plate 33 to move along guide rail 8. An airtightness detection cover 35 is located below connecting plate 33. A pressure sensor 37 is installed on the side of airtightness detection cover 35 away from connecting plate 33. A detection hole is provided on airtightness detection cover 35. The mounting end of pressure sensor 37 is fixedly connected to detection hole 1. The pressure sensor 37 can detect the downward pressure of airtightness detection cover 35, thus enabling more precise control of the applied pressure. Multiple sets of damping rods 36 are provided between connecting plate 33 and airtightness detection cover 35. The two ends of damping rods 36 respectively abut against the connecting plate 33 and airtightness detection cover 35. Installed on one side, the shock absorber 36 is fixedly connected to the connecting plate 33 and the airtightness test cover 35 at both ends. The multiple sets of shock absorbers 36 can buffer and dampen the pressure when the airtightness test cover 35 applies pressure to the end cover, thereby greatly improving the stability of the sealing performance test operation. At the same time, it can also protect the end cover during the test operation and prevent the end cover from being damaged by excessive pressure from the airtightness test cover 35. The pressing mechanism 3 can press down stably on the top of the end cover, thereby ensuring the sealing effect inside the end cover when it is placed. It can then cooperate with the airtightness test mechanism 7 to test the sealing performance of the end cover.

[0021] Side plates 4 are provided on both sides of the inner wall of the automatic conveyor 1 near the upright 2. The mounting ends of the side plates 4 are installed corresponding to the inner wall of the automatic conveyor 1 and are fixedly connected to the automatic conveyor 1. One side of the side plate 4 is inclined, which guides the hydraulic pump end caps conveyed by the automatic conveyor 1, ensuring that the end caps are accurately delivered to the detection position. This avoids the danger of manual placement and improves operator protection. Clamping mechanisms 5 are provided on the sides of the two sets of side plates 4 that are close to each other. Each clamping mechanism 5 includes an electric push rod 51 installed on one side of the upright 2. The mounting ends of the electric push rod 51 are installed corresponding to one side of the upright 2 and are fixedly connected to the upright 2. A clamping plate 52 is provided at the output end of the electric push rod 51. The upper and lower sides of the clamping plate 52 are connected to the inner wall of the side plate 4. The walls are fitted together, and the clamping plate 52 is slidably connected to the side plate 4. One side of the clamping plate 52 is arc-shaped, which allows it to fit better against the outer circumference of the end cover. Two sets of guide rods 53 are provided on the opposite side of the two sets of clamping plates 52. One end of the guide rod 53 is installed corresponding to one side of the clamping plate 52 and is fixedly connected to the clamping plate 52. Multiple sets of shaft holes are correspondingly opened on the automatic conveyor 1, the upright frame 2, and the side plate 4. The output end of the electric push rod 51 and the guide rod 53 are respectively installed corresponding to the shaft holes. The electric push rod 51 and the guide rod 53 are slidably connected to the shaft holes. The guide rod 53 can guide and limit the movement of the clamping plate 52. The clamping mechanism 5 can clamp the end cover conveyed to the test point, so that the end cover can be placed more stably in the test state, which is conducive to the stable operation of the end cover sealing performance test.

[0022] In this embodiment, the operator first powers on the device, then places the hydraulic pump end cap, which needs to be tested for sealing performance, on the automatic conveyor 1. The automatic conveyor 1 transports the end cap, which is guided by the inclined surface of the side plate 4 during transport, so that the end cap is transported to the airtightness testing base 73. At this time, the position sensor 74 detects the position of the end cap. When the end cap position corresponds to the airtightness testing base 73, the electric push rod 51 starts to operate. The electric push rod 51 pushes the clamping plate 52, so that the clamping plate 52 slides along the inner wall of the side plate 4 guided by the guide rod 53, so that the clamping plate 52 clamps and stabilizes the end cap at the testing point. Then the cylinder... In operation 32, cylinder 32 drives connecting plate 33 to slide along guide rail 8 via connecting seat 34. The movement of connecting plate 33 causes the airtightness detection cover 35 below to move towards the end cover position. When the airtightness detection cover 35 and the end cover are in contact, pressure sensor 37 detects the downward pressure of airtightness detection cover 35, keeping airtightness detection cover 35 within the set pressure threshold. Then, air pump 71 starts to operate, and air pump 71 inflates air into airtightness detection base 73 through air pipe 72. Thus, airtightness detection base 73 and pressure sensor 37 work together to accurately detect the pressure value between end cover and airtightness detection base 73, thereby completing the end cover sealing performance test.

[0023] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A device for testing the sealing performance of end caps for hydraulic pumps, comprising an automatic conveyor (1), characterized in that: One end of the automatic conveyor (1) is provided with a stand (2), and a pressing mechanism (3) is provided on one side of the stand (2). The pressing mechanism (3) includes a mounting platform (31), on which a cylinder (32) is provided. A connecting plate (33) is provided at the output end of the cylinder (32). A connecting seat (34) is provided above the connecting plate (33) directly below the output end of the cylinder (32). An airtightness test cover (35) is provided below the connecting plate (33). Multiple sets of shock-absorbing rods (36) are provided between the connecting plate (33) and the airtightness test cover (35). Both sides of the inner wall of the automatic conveyor (1) near the end of the stand (2) are provided with There are side plates (4), and clamping mechanisms (5) are provided on the side of the two sets of side plates (4) that are close to each other. Each set of clamping mechanisms (5) includes an electric push rod (51) provided on one side of the upright (2). The output end of the electric push rod (51) is provided with a clamping plate (52). Two sets of guide rods (53) are provided on the side of the two sets of clamping plates (52) that are far away from each other. An air tightness detection mechanism (7) is provided on one side of the upright (2). The air tightness detection mechanism (7) includes an air pump (71) located on one side of the upright (2). The air outlet end of the air pump (71) is connected to an air pipe (72). An air tightness detection base (73) is provided on the end of the air pipe (72) that is far away from the air pump (71).

2. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, A "U"-shaped assembly groove is provided on the side of the upright frame (2) near the automatic conveyor (1), and one end of the automatic conveyor (1) is installed corresponding to the inner wall of the upright frame (2).

3. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, The mounting end of the mounting platform (31) is installed corresponding to one side of the inner wall of the upright (2), the mounting end of the cylinder (32) is installed corresponding to one side of the upper part of the mounting platform (31), and the output end of the cylinder (32) is installed corresponding to one side of the connecting seat (34).

4. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, A guide rail (8) is provided on one side of the inner wall of the stand (2) below the mounting platform (31). The mounting end of the connecting plate (33) is installed corresponding to the slider on the guide rail (8). The mounting end of the connecting seat (34) is installed corresponding to the upper side of the connecting plate (33). The two ends of the shock absorber (36) are respectively installed on the side of the connecting plate (33) and the airtightness detection cover (35) that are close to each other. A pressure sensor (37) is provided on the side of the airtightness detection cover (35) away from the connecting plate (33).

5. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, The mounting end of the side plate (4) is installed corresponding to the inner wall of the automatic conveyor (1). One side of the side plate (4) is set in an inclined shape. The upper and lower sides of the clamping plate (52) are in contact with the inner wall of the side plate (4). One side of the clamping plate (52) is set in an arc shape. One end of the guide rod (53) is installed corresponding to one side of the clamping plate (52).

6. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, The mounting end of the electric push rod (51) is installed corresponding to one side of the upright (2). Multiple sets of shaft holes are opened on the automatic conveyor (1), the upright (2) and the side plate (4). The output end of the electric push rod (51) and the guide rod (53) are respectively installed corresponding to the shaft holes.

7. The hydraulic pump end cap sealing performance testing equipment according to claim 1, characterized in that, The bottom of the inner wall of the stand (2) is provided with a base plate (6). The mounting end of the airtightness detection base (73) is installed corresponding to the top of the base plate (6). When the airtightness detection base (73) is in the assembled state, its height is consistent with the height of the conveying roller on the automatic conveyor (1). One end of the air pipe (72) is installed corresponding to the air outlet of the air pump (71), and the other end of the air pipe (72) is installed corresponding to the airtightness detection base (73). A position sensor (74) is provided on the airtightness detection base (73).

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