A kind of arc symmetry detection device for hydraulic pump vane

Abstract

This utility model belongs to the field of arc symmetry detection, specifically a device for detecting the arc symmetry of hydraulic pump blades, including a base assembly, a limiting assembly, and a measuring assembly. The base assembly has a base fixed by support legs, and a sliding groove is formed on the top of the mounting bracket. The limiting assembly clamps and fixes the blades using a fixing plate, a long screw, bearings, a clamping plate, and long bolts. The measuring assembly consists of a motor, a sliding plate, a first electric push rod, a connecting shaft, a coupling, a fixing block, a second electric push rod, a pressure sensor, and a detection head, enabling lateral movement, longitudinal contact, and rotational scanning of the detection head. Through the cooperation of the electric push rod and the mechanical structure, stable blade clamping, precise positioning of the detection head, and automated scanning of the arc surface are achieved. Data is collected using the pressure sensor to determine symmetry, improving the automation and accuracy of hydraulic pump blade arc symmetry detection. It is suitable for batch testing of blades of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of arc symmetry detection, specifically a device for detecting the arc symmetry of hydraulic pump blades. Background Technology

[0002] As a core moving component, the symmetry of the arc profile of the hydraulic pump blades directly affects the sealing performance and working efficiency of the pump body.

[0003] Traditional circular arc symmetry testing devices typically have the following problems:

[0004] 1. The blade fixing method is limited and cannot meet the clamping requirements of blades of different specifications. In addition, the fixing stability is insufficient, which can easily cause the blade to shake during the test and affect the measurement accuracy.

[0005] 2. The detection process relies heavily on manual operation, such as manually adjusting the detection position and manually reading data, which is not only inefficient but also prone to significant human error.

[0006] 3. The detection device has a low degree of automation, cannot achieve accurate scanning of the entire circumference of the arc surface, and the data acquisition and analysis process is cumbersome, making it difficult to meet the rapid detection requirements in mass production; therefore, in order to address the above problems, a circular arc symmetry detection device for hydraulic pump blades is proposed. Utility Model Content

[0007] To overcome the shortcomings of existing technologies and solve the problems of existing hydraulic pump blade arc symmetry detection devices, such as single fixing method, poor adaptability, low efficiency and large error of manual detection, and low degree of automation, this utility model proposes an arc symmetry detection device for hydraulic pump blades.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a hydraulic pump blade arc symmetry detection device, including a base assembly, a limiting assembly and a measuring assembly.

[0009] The base assembly includes a base, and a mounting bracket is fixedly connected to the top surface of the base. The top of the mounting bracket has a sliding groove.

[0010] The limiting component includes a fixing plate, a long screw threaded to the top of the fixing plate, a bearing sleeved to the end of the long screw, a clamping plate fixedly connected to the end face of the bearing, and a long bolt threaded through the top of the clamping plate.

[0011] The measuring component includes a motor, a sliding plate fixedly connected to the bottom end of the motor, a first electric push rod fixedly connected to the outer surface of the sliding plate, a coupling fitted on the output shaft of the motor, a connecting shaft fitted to the other end of the coupling, a fixing block fixedly connected to the end of the connecting shaft, a second electric push rod mounted on the bottom end of the fixing block, a pressure sensor mounted on the output end of the second electric push rod, and a detection head fixedly connected to the working end of the pressure sensor.

[0012] Preferably, threaded holes are provided on the top of both sides of the fixing plate, and the long screw is threaded into the threaded holes of the fixing plate.

[0013] Preferably, the top of the clamping plate has multiple threaded openings, the long bolt is threaded into the threaded openings, and the bottom end of the clamping plate is slidably fitted onto the outer surface of the fixing plate.

[0014] Preferably, the slide plate is slidably fitted into the slide groove, and the base of the first electric push rod is fixed inside the slide groove.

[0015] Preferably, the outer surface of the base is fixedly connected with a support foot, and the bottom end face of the motor is slidably fitted onto the top surface of the mounting bracket.

[0016] The advantages of this utility model are:

[0017] 1. This utility model achieves the function of quick clamping and stable fixing of hydraulic pump blades of different specifications through the structural design of the fixing plate, long screw, clamping plate and bearing in the limiting component. It solves the problem of the single fixing method and poor adaptability of the traditional device, and improves the positioning accuracy and clamping efficiency when detecting blades.

[0018] 2. This utility model achieves automated and precise adjustment of the lateral position of the detection head by using the structural design of the first electric push rod and the sliding plate in the measuring component to cooperate with the sliding groove. This solves the problem of large errors in manual adjustment of the detection position and improves the adaptability and detection efficiency of the detection device to different blade arc surfaces.

[0019] 3. Through the structural design of the second electric push rod, pressure sensor and motor in the measuring component, this utility model realizes the automatic contact between the detection head and the circular arc surface of the blade, real-time acquisition of pressure data and full circumferential rotation scanning function, which solves the problems of low efficiency and large data error of traditional manual detection, and improves the automation level and reliability of the detection results of the circular arc symmetry detection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the arc symmetry detection device of this utility model;

[0022] Figure 2 This is a schematic diagram of the back structure of the arc symmetry detection device of this utility model;

[0023] Figure 3 This is a schematic diagram of the base assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the measuring component of this utility model.

[0026] In the diagram: 1. Base assembly; 101. Base; 102. Mounting bracket; 103. Slide groove; 104. Support leg; 2. Limiting assembly; 201. Fixing plate; 202. Long screw; 203. Bearing; 204. Clamping plate; 205. Long bolt; 3. Measuring assembly; 301. Motor; 302. Slide plate; 303. First electric push rod; 304. Connecting shaft; 305. Coupling; 306. Fixing block; 307. Second electric push rod; 308. Pressure sensor; 309. Detection head. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a device for detecting the arc symmetry of hydraulic pump blades. (Refer to...) Figures 1 to 5 A device for detecting the arc symmetry of hydraulic pump blades includes a base assembly 1, a limiting assembly 2, and a measuring assembly 3.

[0030] The base assembly 1 includes a base 101, a mounting bracket 102 is fixedly connected to the top surface of the base 101, a sliding groove 103 is provided on the top of the mounting bracket 102, and a support leg 104 is fixedly connected to the outer surface of the base 101.

[0031] The base 101 is fixed to the workbench by the support legs 104, providing a stable support platform; the mounting bracket 102 is vertically fixed to the top of the base 101, and the slide groove 103 on its top provides a guide rail for the lateral movement of the measuring component 3.

[0032] The limiting component 2 includes a fixing plate 201. A long screw 202 is threaded onto the top of the fixing plate 201. A bearing 203 is sleeved onto the end of the long screw 202. A clamping plate 204 is fixedly connected to the end face of the bearing 203. A long bolt 205 is threaded through the top of the clamping plate 204. Threaded holes are provided on the top of both sides of the fixing plate 201. The long screw 202 is threaded into the threaded holes of the fixing plate 201. Multiple threaded openings are provided on the top of the clamping plate 204. The long bolt 205 is threaded into the threaded openings. The bottom end of the clamping plate 204 is slidably fitted onto the outer surface of the fixing plate 201.

[0033] The blade is placed on the top surface of the fixing plate 201, with the two sides of the blade corresponding to the positions of the clamping plate 204. The long screw 202 is rotated and threaded into the threaded hole at the top of the fixing plate 201. The bearing 203 at the end of the long screw 202 drives the clamping plate 204 to slide along the outer surface of the fixing plate 201 until the clamping plate 204 is in close contact with the side of the blade. The function of the bearing 203 is to reduce the friction when the long screw 202 rotates, so that the clamping plate 204 can move more smoothly. Finally, the clamping plate 204 is further locked by the long bolt 205 threaded into the threaded hole at the top of the clamping plate 204 to ensure that the blade does not shift during the test. The blade is fixed by mechanical clamping to ensure that the blade position is stable during the test and to avoid measurement errors caused by shaking.

[0034] The measuring component 3 includes a motor 301, a slide plate 302 fixedly connected to the bottom end of the motor 301, a first electric push rod 303 fixedly connected to the outer surface of the slide plate 302, a coupling 305 fitted on the output shaft of the motor 301, a connecting shaft 304 fitted to the other end of the coupling 305, a fixing block 306 fixedly connected to the end of the connecting shaft 304, a second electric push rod 307 mounted on the bottom end of the fixing block 306, a pressure sensor 308 mounted on the output end of the second electric push rod 307, a detection head 309 fixedly connected to the working end of the pressure sensor 308, the slide plate 302 slidably fitting into a slide groove 103, the base of the first electric push rod 303 fixed in the slide groove 103, and the bottom end of the motor 301 slidably fitting onto the top surface of the mounting bracket 102.

[0035] The first electric push rod 303 is fixed in the slide groove 103, and its push rod end is connected to the slide plate 302. When the first electric push rod 303 is activated, the slide plate 302 is pushed to slide laterally in the slide groove 103, which drives the motor 301 and the entire measuring component 3 to move, so that the detection head 309 is aligned with the area to be detected on the arc surface of the blade. The electric push rod realizes the precise lateral positioning of the measuring component 3, adapts to the detection needs of blades of different sizes, and improves the adaptability of the device.

[0036] The second electric push rod 307 is mounted at the bottom of the fixed block 306, and its output end is connected to the pressure sensor 308. The working end of the pressure sensor 308 is fixed to the detection head 309. When the second electric push rod 307 is activated, it pushes the detection head 309 vertically downward until it makes slight contact with the arc surface of the blade. At this time, the pressure sensor 308 begins to collect contact pressure data in real time. The electric push rod controls the downward stroke of the detection head to ensure uniform contact force, avoid damage to the blade, and provide stable physical contact conditions for pressure data acquisition.

[0037] The output shaft of motor 301 is connected to connecting shaft 304 via coupling 305. The fixing block 306 at the end of connecting shaft 304 drives the second electric push rod 307 and detection head 309 to rotate. Motor 301 drives the blade to rotate at a constant speed by being fixed by the limiting component. Detection head 309 slides along the arc surface of the blade. Pressure sensor 308 continuously records the contact pressure value at different angles. If the symmetry of the arc surface of the blade is good, the value fluctuation range of pressure sensor 308 is small. If there is a symmetry deviation, the pressure value will change regularly with the rotation angle. Through the cooperation of the rotation driven by motor 301 and the sliding of detection head 309, the symmetry of the arc surface in the whole circumference is detected. Pressure sensor 308 converts mechanical displacement into electrical signal, providing a basis for subsequent data processing.

[0038] After the test is completed, the second electric push rod 307 drives the test head 309 to rise and reset, the first electric push rod 303 moves the measuring component 3 back to the initial position, loosens the long bolt 205 and the long screw 202, removes the blade, and completes one test process.

[0039] Working principle: The detection device fixes the blade through the limiting component 2, and uses the mechanical movement of the measuring component 3 and the data acquisition of the sensor, combined with the support and guiding structure of the base component 1, to realize the symmetry detection of the arc surface of the hydraulic pump blade. Its core principle is: through the change of contact pressure between the detection head 309 and the arc surface of the blade, combined with the displacement data when the motor 301 drives the blade to rotate, the pressure sensor 308 converts the physical contact signal into an electrical signal, and finally judges whether the arc symmetry meets the standard through data processing.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for detecting the arc symmetry of hydraulic pump blades, characterized in that, include: The base assembly (1) includes a base (101), and a mounting bracket (102) is fixedly connected to the top surface of the base (101). A sliding groove (103) is provided on the top of the mounting bracket (102). The limiting component (2) includes a fixing plate (201), the top of the fixing plate (201) is threaded with a long screw (202), the end of the long screw (202) is sleeved with a bearing (203), the end face of the bearing (203) is fixedly connected with a clamping plate (204), and the top of the clamping plate (204) is threaded with a long bolt (205). The measuring component (3) includes a motor (301), a slide plate (302) is fixedly connected to the bottom end of the motor (301), a first electric push rod (303) is fixedly connected to the outer surface of the slide plate (302), a coupling (305) is fitted on the output shaft of the motor (301), a connecting shaft (304) is fitted to the other end of the coupling (305), a fixing block (306) is fixedly connected to the end of the connecting shaft (304), a second electric push rod (307) is installed at the bottom end of the fixing block (306), a pressure sensor (308) is installed at the output end of the second electric push rod (307), and a detection head (309) is fixedly connected to the working end of the pressure sensor (308).

2. The device for detecting the arc symmetry of hydraulic pump blades according to claim 1, characterized in that: The top of both sides of the fixing plate (201) is provided with threaded holes, and the long screw (202) is threaded into the threaded holes of the fixing plate (201).

3. The device for detecting the arc symmetry of hydraulic pump blades according to claim 1, characterized in that: The top of the clamping plate (204) has multiple threaded openings, the long bolt (205) is threaded into the threaded openings, and the bottom end of the clamping plate (204) is slidably fitted on the outer surface of the fixing plate (201).

4. The hydraulic pump blade arc symmetry detection device according to claim 1, characterized in that: The slide plate (302) is slidably fitted into the slide groove (103), and the base of the first electric push rod (303) is fixed in the slide groove (103).

5. The device for detecting the arc symmetry of hydraulic pump blades according to claim 1, characterized in that: The base (101) has a fixed support foot (104) on its outer surface, and the bottom end face of the motor (301) is slidably fitted on the top end face of the mounting bracket (102).

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