Actuator torque testing device

Abstract

The utility model provides an actuator torque testing device, which comprises a machine body, the machine body comprises an upper layer, a middle layer and a lower layer, the upper layer, the middle layer and the lower layer are respectively a tested equipment layer, a detection layer and a brake layer, the tested equipment layer is used for fixing an actuator mounting plate, and the actuator mounting plate is used for placing a tested actuator; the detection layer is used for placing an actuator connecting shaft, a brake connecting shaft and a torque sensor, two ends of the actuator connecting shaft and the brake connecting shaft are respectively connected with a detected actuator and a brake, and the torque sensor is arranged between the actuator connecting shaft and the brake connecting shaft; the brake layer is provided with a brake oil cylinder capable of adjusting pressure, and the two ends of the brake oil cylinder are controlled by two back pressure valves to adjust torque needed by braking. The braking device achieves the braking purpose through a hydraulic loop, and is large in braking torque range, convenient to adjust, simple in structure and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to an actuator torque testing device. Background Art

[0002] With the rapid development of industrial automation and intelligence, the actuator, as an important component of the mechanical system, has a decisive influence on the operation of the entire system in terms of its performance stability and reliability. The torque measurement device of the actuator, as a key component to measure its performance, plays a vital role in ensuring the accurate movement of the actuator, preventing overload and extending its service life.

[0003] An actuator torque testing device proposed in Chinese utility model patent application No. CN202021857341.8 includes a frame, which is provided with three layers, including a device under test layer, a detection layer and a brake layer. The device under test layer is used to fix a connecting bracket, and the bracket is used to place the device under test; the detection layer is used to place a test connecting shaft, and the two ends of the test connecting shaft are respectively connected to the device under test and a reducer, and a torque sensor is arranged on one side of the test connecting shaft; the brake layer is provided with a reducer and a brake, and the reducer is connected to the brake.

[0004] However, the existing actuator torque test device has some shortcomings in the process of use and still needs to be improved. In the prior art, first of all, the actuator torque measurement device can only provide a fixed torque measurement range, and cannot adjust the torque required for braking according to actual needs. This leads to the need to frequently replace or adjust the torque measurement device when braking with different torques is required in actual applications, which increases the difficulty and cost of operation.

[0005] The actuator torque measuring device in the prior art can usually only measure the torque generated by the brake, but cannot directly control the braking state of the brake. This means that during the operation of the actuator, the braking force of the brake cannot be adjusted according to actual needs, thus affecting the operating efficiency and safety of the actuator.

[0006] In addition, in industrial automation systems, actuators of different specifications are widely used. However, the actuator torque measurement device in the prior art can often only adapt to the installation of actuators of specific specifications, and cannot adapt to the needs of actuators of different specifications. This leads to the need to equip actuators of different specifications with torque measurement devices of different specifications in practical applications, which increases the complexity and cost of the system. Therefore, we make improvements on this and propose an actuator torque test device. Utility Model Content

[0007] The purpose of the utility model is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions: an actuator torque test device, including a fuselage, the fuselage is provided with a device under test layer, a detection layer and a brake layer, the device under test layer is used to fix the actuator mounting plate, and the device under test is fixed on the actuator mounting plate; the detection layer is used to place a test connecting shaft, the two ends of the test connecting shaft are respectively connected to the device under test and the brake device, a torque sensor is arranged in the middle of the two test connecting shafts, the brake layer is provided with a brake oil cylinder with adjustable pressure, two back pressure valves are arranged at both ends of the brake oil cylinder to control the torque required for adjusting the brake, a one-way valve is respectively installed behind the back pressure valve on the brake, and a stop valve is installed between the two chambers of the brake oil cylinder.

[0008] As a preferred technical solution of the utility model, the device under test layer is provided with an actuator under test, the actuator under test is mounted on an actuator mounting plate, the actuator mounting plate is connected to the actuator under test by bolts, and the actuator mounting plate is connected to the fuselage by bolts.

[0009] As a preferred technical solution of the utility model, there is a through hole in the middle of the actuator mounting plate, the actuator connecting shaft is connected to the actuator through the through hole, and the bolt connection hole between the actuator mounting plate and the actuator is an elongated hole.

[0010] As a preferred technical solution of the utility model, the upper end of the actuator connecting shaft is a connecting shaft, the connecting shaft is flatly connected to the actuator under test, and the lower end of the actuator connecting shaft is a flange, which is connected to the torque sensor through bolts.

[0011] As a preferred technical solution of the utility model, the actuator connecting shaft has various specifications corresponding to different actuators. The actuator connecting shaft is connected to the rotating shaft of the actuator through the through hole of the actuator mounting plate.

[0012] As a preferred technical solution of the utility model, the detection layer is provided with a torque sensor, and the torque sensor is bolted to the actuator connecting shaft and the brake connecting shaft.

[0013] As a preferred technical solution of the utility model, the upper end of the brake connecting shaft is connected to the torque sensor through a bolt, and the lower end of the brake connecting shaft is connected to the brake through a flat key.

[0014] As a preferred technical solution of the utility model, the brake layer is provided with a brake, the brake is connected to the brake mounting plate by bolts, and the brake mounting plate is connected to the fuselage by bolts.

[0015] As a preferred technical solution of the utility model, the brake is connected to the brake connecting shaft through a flat key, and the upper end flange of the brake connecting shaft is connected to the torque sensor through bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] A back pressure valve is installed at both ends of the brake cylinder. The function of the back pressure valve is to brake. When testing the actuator torque, the back pressure valve is set to a high pressure, that is, the pressure of the brake cylinder is lower than the back pressure valve set pressure. At this time, the pipeline is blocked and it is in a braking state; then slowly lower the set pressure of the back pressure valve until the oil circuit is opened and the actuator begins to rotate slowly. At this time, the actuator torque can be directly read through the torque sensor. In the brake hydraulic circuit, a one-way valve is installed behind the back pressure valve to limit the flow direction of the pressure oil, ensuring that the torque can be accurately tested when the actuator rotates clockwise or counterclockwise. Through the hydraulic circuit, the braking purpose is achieved, and the braking torque range is large and easy to adjust.

[0018] The bolt connection hole between the actuator mounting plate and the actuator is an elongated hole, which is convenient for installing actuators of different specifications. A one-way valve is installed behind the back pressure valve on the brake to control the one-way flow of hydraulic oil. A stop valve is installed between the two chambers of the brake cylinder, and the stop valve controls the braking state of the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure provided by the utility model;

[0020] Figure 2 A schematic diagram of the structure of the actuator to be tested provided by the utility model;

[0021] Figure 3 A schematic diagram of the fuselage structure provided by the utility model;

[0022] Figure 4 The utility model provides a brake hydraulic principle diagram.

[0023] Indicated in the figure:

[0024] 1. Actuator under test; 2. Actuator connecting shaft; 3. Torque sensor; 4. Actuator mounting plate; 5. Brake connecting shaft; 6. Brake mounting plate; 7. Fuselage; 8. Brake; 9. Back pressure valve; 10. Check valve; 11. Brake cylinder; 12. Stop valve. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be noted that the embodiments of the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] Example 1: Please refer to Figure 1-Figure 4 An actuator torque test device includes a fuselage 7, which is provided with a device under test layer, a detection layer and a braking layer. The device under test layer is used to fix an actuator mounting plate 4, on which the device under test is fixed; the detection layer is used to place a test connecting shaft, the two ends of the test connecting shaft are respectively connected to the device under test and the braking device, a torque sensor 3 is arranged in the middle of the two test connecting shafts, and the braking layer is provided with a brake cylinder 11 with adjustable pressure, and two back pressure valves 9 are arranged at both ends of the brake cylinder 11 to control the torque required for adjusting the brake.

[0028] The device under test layer is provided with a tested actuator 1, which is mounted on an actuator mounting plate 4, which is connected to the tested actuator by bolts, and which is connected to the fuselage 7 by bolts. There is a through hole in the middle of the actuator mounting plate 4, through which the actuator connecting shaft 2 is connected to the actuator, and the bolt connection hole between the actuator mounting plate 4 and the actuator is an elongated hole. The upper end of the actuator connecting shaft 2 is a connecting shaft, which is connected to the tested actuator by a flat connection, and the lower end of the actuator connecting shaft 2 is a flange, which is connected to the torque sensor 3 by bolts. The actuator connecting shaft 2 has a variety of specifications corresponding to different actuators. The actuator connecting shaft 2 is connected to the rotating shaft of the actuator through the through hole of the actuator mounting plate 4.

[0029] The detection layer is provided with a torque sensor 3, which is bolted to the actuator connecting shaft 2 and the brake connecting shaft 5. The upper end of the brake connecting shaft 5 is connected to the torque sensor 3 by bolts, and the lower end of the brake connecting shaft 5 is connected to the brake 8 by a flat key. The brake layer is provided with a brake 8, which is connected to the brake mounting plate 6 by bolts, and the brake mounting plate 6 is connected to the fuselage 7 by bolts. The brake 8 is connected to the brake 8 connecting shaft by a flat key, and the upper end flange of the brake 8 connecting shaft is connected to the torque sensor 3 by bolts. A one-way valve 10 is installed behind the back pressure valve 9 on the brake 8, and a stop valve 12 is installed between the two chambers of the brake oil cylinder.

[0030] Embodiment 2: An actuator torque test device, the fuselage 7 comprises three layers: upper, middle and lower layers, which are the device to be tested layer, the detection layer and the braking layer respectively. The double-dotted line in the figure is the middle detection layer, and the rest are the upper and lower layers respectively. The actuator 1 to be tested is mounted on the actuator mounting plate 4, which is connected to the actuator to be tested by bolts, and the actuator mounting plate 4 is connected to the fuselage 7 by bolts. There is a through hole in the middle of the actuator mounting plate 4, which is convenient for the actuator connecting shaft 2 to pass through and connect with the actuator. The bolt connection hole between the actuator mounting plate 4 and the actuator is an elongated hole, which is convenient for the installation of actuators of different specifications.

[0031] The upper end of the actuator connecting shaft 2 is a connecting shaft, which is flatly connected to the actuator under test, and the lower end is a flange, which is connected to the torque sensor 3 through bolts. The actuator connecting shaft 2 has various specifications corresponding to different actuators. The actuator connecting shaft 2 is connected to the rotating shaft of the actuator through the through hole of the actuator mounting plate 4.

[0032] The detection layer is mainly composed of a torque sensor 3, which is connected to the actuator connecting shaft 2 and the brake connecting shaft 5 through screws, and transmits the torque of the actuator to the torque sensor 3 to read the real-time torque value. The upper end of the brake connecting shaft 5 is connected to the torque sensor 3 through bolts, and the lower end is connected to the brake 8 through a flat key. The brake 8 is connected to the brake mounting plate 6 through bolts, and the brake mounting plate 6 is connected to the fuselage 7 through bolts. The brake 8 is connected to the brake connecting shaft 5 through a flat key, and the upper end flange of the brake connecting shaft 5 is connected to the torque sensor 3 through screws.

[0033] From the above, it can be seen that the rotating motion parts: the actuator shaft, the actuator connecting shaft 2, the torque sensor 3, the brake 8 shaft and the brake 8 shaft are connected as a whole to generate rotation and test the torque; while the fuselage 7, the actuator housing and the brake 8 housing are connected as a whole and fixed.

[0034] The working principle of the brake 8 is shown in the figure. A back pressure valve 9 is installed at both ends of the brake cylinder of the brake 8. The function of the back pressure valve 9 is to brake. When testing the actuator torque, the back pressure valve 9 is set to a high pressure, that is, the pressure of the brake cylinder is lower than the back pressure valve 9 set pressure. At this time, the pipeline is blocked and it is in a braking state; then slowly lower the set pressure of the back pressure valve 9 until the oil circuit is opened and the actuator starts to rotate slowly. At this time, the actuator torque can be directly read through the torque sensor 3.

[0035] In the hydraulic circuit of the brake 8, a check valve 10 is installed behind the back pressure valve 9 to limit the flow of the pressure oil and ensure that the torque can be accurately tested when the actuator rotates clockwise or counterclockwise. In the hydraulic circuit of the brake 8, a stop valve 12 is set. In the normal working test state, the stop valve 12 is in the cut-off state. When the braking effect of the brake 8 needs to be released, the stop valve 12 is opened, and the brake is released at this time.

[0036] The actuator connecting shaft 2 is connected to the actuator, the actuator is mounted on the upper actuator mounting plate 4 of the frame, and the lower flange of the actuator connecting shaft is connected to the torque sensor 3. The actuator connecting shaft 2 is connected to the actuator, the actuator is mounted on the upper actuator mounting plate 4 of the fuselage 7, and the lower flange of the actuator connecting shaft is connected to the torque sensor 3. The brake 8 is connected to the brake connecting shaft 5, the flange of the brake connecting shaft 5 is connected to the torque sensor 3, and the brake 8 is mounted on the brake mounting plate 6.

[0037] The brake 8 is characterized in that a back pressure valve 9 is installed at each end of the brake oil cylinder to adjust the braking torque of the brake 8. The brake 8 is characterized in that a one-way valve 10 is installed behind each of the two back pressure valves 9 to allow only one-way flow of hydraulic oil. A stop valve 12 is installed between the two chambers of the brake oil cylinder to control the braking state of the brake 8.

[0038] During the use of the utility model, the working principle of the brake 8 is as follows Figure 4 As shown, a back-pressure valve 9 is installed at both ends of the brake cylinder of the brake 8. The function of the back-pressure valve 9 is to brake. When testing the actuator torque, the back-pressure valve 9 sets the pressure to a high level, that is, the pressure of the brake cylinder is lower than the back-pressure valve 9 set pressure. At this time, the pipeline is blocked and it is in a braking state; then slowly lower the set pressure of the back-pressure valve 9 until the oil circuit is opened and the actuator starts to rotate slowly. At this time, the actuator torque can be directly read through the torque sensor 3.

[0039] In the hydraulic circuit of the brake 8, a one-way valve 10 is installed behind the back pressure valve 9 to limit the flow direction of the pressure oil and ensure that the torque can be accurately tested when the actuator rotates clockwise or counterclockwise.

[0040] A stop valve 12 is provided in the hydraulic circuit of the brake 8. In the normal working test state, the stop valve 12 is in the stop state. When the braking effect of the brake 8 needs to be released, the stop valve 12 is opened, and the brake is released at this time.

[0041] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. An actuator torque test device, comprising a fuselage (7), wherein the fuselage (7) is provided with a device under test layer, a detection layer and a brake layer, wherein the device under test layer is fixed with an actuator mounting plate (4), the device under test is fixed on the actuator mounting plate (4), a test connecting shaft is placed on the detection layer, the two ends of the test connecting shaft are respectively connected to the device under test and the brake device, and a torque sensor (3) is arranged in the middle of the test connecting shaft, characterized in that: The brake layer is provided with a brake oil cylinder (11) with adjustable pressure, back pressure valves (9) are provided at both ends of the brake oil cylinder (11), a one-way valve (10) is provided at the rear side of the back pressure valve (9), and a stop valve (12) is provided between the two chambers of the brake oil cylinder (11).

2. The actuator torque testing device according to claim 1, characterized in that: The device under test layer is provided with an actuator under test (1), the actuator under test (1) is mounted on the actuator mounting plate (4), the actuator mounting plate (4) is connected to the actuator under test via bolts, and the actuator mounting plate (4) is connected to the fuselage (7) via bolts.

3. The actuator torque testing device according to claim 2, characterized in that: The actuator mounting plate (4) has a through hole in the middle, the tested actuator (1) is connected to the actuator connecting shaft (2) via the through hole, and the bolt connection hole between the actuator mounting plate (4) and the tested actuator (1) is an elongated hole.

4. The actuator torque testing device according to claim 3, characterized in that: The upper end of the actuator connecting shaft (2) is a connecting shaft, and the connecting shaft is connected to the tested actuator (1); the lower end of the actuator connecting shaft (2) is a flange, and the flange is connected to the torque sensor (3) via bolts.

5. The actuator torque testing device according to claim 4, characterized in that: The actuator connecting shaft (2) is connected to the rotating shaft of the actuator to be tested (1) through a through hole of the actuator mounting plate (4).

6. The actuator torque testing device according to claim 1, characterized in that: The detection layer is provided with a torque sensor (3), and the torque sensor (3) is bolted to the actuator connecting shaft (2) and the brake connecting shaft (5).

7. The actuator torque testing device according to claim 6, characterized in that: The upper end of the brake connecting shaft (5) is connected to the torque sensor (3) via a bolt, and the lower end of the brake connecting shaft (5) is connected to the brake (8) via a flat key.

8. The actuator torque testing device according to claim 1, characterized in that: The brake layer is provided with a brake (8), the brake (8) is connected to the brake mounting plate (6) by bolts, and the brake mounting plate (6) is connected to the fuselage (7) by bolts.

9. The actuator torque testing device according to claim 8, characterized in that: The brake (8) is connected to the brake connecting shaft (5) via a flat key.

10. The actuator torque testing device according to claim 9, characterized in that: The upper end flange of the brake (8) connecting shaft is connected to the torque sensor (3) via bolts.

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