Mechanical load simulator for operating mechanism and mechanical load simulation test device

Abstract

The application provides a mechanical load simulation piece for an operating mechanism and a mechanical load simulation test device. The mechanical load simulation piece comprises a mechanical load simulation seat, a friction force adjusting mechanism and a load simulation hole for active assembly of a movable contact simulation piece. The friction force adjusting mechanism comprises a friction piece and a pressing structure. The friction piece is arranged in the load simulation hole to slide with the movable contact simulation piece. The pressing structure is used to push the friction piece to adjust the sliding friction force between the friction piece and the movable contact simulation piece. The mechanical load simulation piece comprises a counterweight for fixed installation on the movable contact simulation piece. The counterweight is used to adjust the weight of the movable contact simulation piece. The mechanical load simulation piece can effectively solve the technical problem that the simulation test device in the prior art cannot simulate the mechanical load of different circuit breakers.

Description

Technical Field

[0001] This invention relates to a mechanical load simulation component and a mechanical load simulation test device for operating mechanisms, belonging to the technical field of test devices for operating mechanisms. Background Technology

[0002] The opening and closing of a circuit breaker is mainly achieved by the operating mechanism. The stability of the operating mechanism's operation directly affects the circuit breaker's breaking performance. To ensure the reliability of the operating mechanism, each operating mechanism must undergo load testing and a certain number of operational tests before leaving the factory. Factory testing mainly relies on simulation testing equipment. Currently, the simulation testing equipment uses a moving contact simulator to simulate the moving contact in the circuit breaker. During the test, the moving contact simulator is connected to the operating mechanism under test via a linkage mechanism.

[0003] Existing simulation test devices have several problems during testing, specifically: Since the force driving the simulated moving contact component via the linkage mechanism is a constant, a single simulation test device can only simulate one type of mechanical load. However, during testing, a single device typically needs to test different models of operating mechanisms, each with varying mechanical load requirements. Designing specific simulation test devices for different operating mechanism models would be costly and inconvenient. Furthermore, using an incompatible simulation test device requires characteristic adjustment after the operating mechanism is assembled onto the circuit breaker to match its mechanical characteristics. This adjustment is difficult and time-consuming. If the adjustment fails or other performance issues arise, the device must be returned to the factory for repair, compromising the quality of the operating mechanism and affecting the timely delivery of the circuit breaker. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical load simulation component for operating mechanisms, thereby solving the technical problem that existing simulation testing devices cannot simulate the mechanical loads of different circuit breakers. Simultaneously, this invention also provides a mechanical load simulation testing device to solve the aforementioned problems.

[0005] The mechanical load simulation component for the operating mechanism in this invention adopts the following technical solution:

[0006] The mechanical load simulation component of the operating mechanism includes a mechanical load simulation base, on which a friction adjustment mechanism and a load simulation hole for movable assembly of the moving contact simulation component are provided. The friction adjustment mechanism includes a friction element and a pressing structure. The friction element is arranged in the load simulation hole to slide with the moving contact simulation component. The pressing structure is used to push the friction element to adjust the sliding friction between the friction element and the moving contact simulation component. And / or the mechanical load simulation component includes a counterweight block for fixed installation on the moving contact simulation component. The counterweight block is used to adjust the weight of the moving contact simulation component.

[0007] Beneficial Effects: This invention provides a mechanical load simulator for an operating mechanism. In use, the moving contact simulator is first movably assembled into the load simulation hole. The moving contact simulator is connected to the operating mechanism under test via a linkage mechanism. The sliding friction between the moving contact simulator and the friction element is adjusted by a pressing structure, thus simulating the mechanical load of the circuit breaker using sliding friction. Additionally, a counterweight can be used to simulate the mechanical load of the circuit breaker. During use, a suitable counterweight is fixedly installed on the moving contact simulator. The weight of the moving contact simulator is adjusted by the counterweight, ensuring that the force required to move the moving contact simulator via the linkage mechanism meets the mechanical load requirements for the test. Alternatively, both sliding friction and the counterweight can be used simultaneously to simulate the mechanical load. Compared to existing simulation test devices that can only simulate one type of mechanical load, the mechanical load simulator provided by this invention can simulate different mechanical loads as needed, facilitating simulation testing while reducing testing costs.

[0008] Furthermore, the extrusion structure includes a first extruder and a second extruder, and the friction element is an elastic element. In the axial direction of the load simulation hole, the elastic element is arranged between the first and second extruders, and at least one of the first and second extruders can be adjusted in the axial direction of the load simulation hole.

[0009] Beneficial effects: It is very convenient to use when adjusting the axial distance between the first and second extrusion parts in the load simulation hole to extrude the elastic part and to adjust the sliding friction between the friction part and the moving contact simulation part by utilizing the elastic deformation of the elastic part.

[0010] Furthermore, the first extrusion member is a step disposed within the load simulation hole, and the second extrusion member is a pressure plate movably installed at the opening of the load simulation hole, with the pressure plate and the step arranged opposite to each other in the axial direction of the load simulation hole.

[0011] Beneficial effects: Since the extrusion component formed by the step is a fixed component, when adjusting the extrusion pressure on the elastic component, it is only necessary to move the adjusting plate in the axial direction of the load simulation hole, which makes the adjustment more convenient.

[0012] Furthermore, a threaded mounting hole is provided at the edge of the load simulation hole, and the threaded mounting hole extends in the same direction as the axis of the load simulation hole. The pressure plate is provided with a bolt through hole for the bolt to pass through. The bolt passes through the bolt through hole and the threaded mounting hole in sequence to fix the pressure plate at the opening of the load simulation hole.

[0013] Beneficial effects: The pressure plate is fixed to the edge of the load simulation hole by bolts. By tightening or loosening the bolts, the distance between the pressure plate and the step can be changed, thereby changing the sliding friction between the friction component and the moving contact simulation component, making the adjustment more accurate and convenient.

[0014] Furthermore, the pressure plate is an annular pressure plate, and the step is an annular step, with the annular pressure plate and the annular step arranged coaxially and facing each other.

[0015] Beneficial effects: The combination of the annular pressure plate and the annular step can apply a more uniform compressive force to the elastic element, resulting in more uniform deformation of the elastic element; in addition, the annular pressure plate is more convenient to arrange.

[0016] The mechanical load simulation test device for the operating mechanism in this invention adopts the following technical solution:

[0017] The mechanical load simulation test device for the operating mechanism includes a moving contact simulation component, on which a linkage mechanism for connection with the operating mechanism is provided; it also includes a mechanical load simulation component, which includes a mechanical load simulation base, on which a friction adjustment mechanism and a load simulation hole for movable assembly of the moving contact simulation component are provided; the friction adjustment mechanism includes a friction element and a pressing structure; the friction element is arranged in the load simulation hole for sliding engagement with the moving contact simulation component; the pressing structure is used to push the friction element to adjust the sliding friction between the friction element and the moving contact simulation component; and / or the mechanical load simulation component includes a counterweight for fixed installation on the moving contact simulation component, the counterweight for adjusting the weight of the moving contact simulation component.

[0018] Beneficial Effects: This invention provides a mechanical load simulation test device for operating mechanisms. In use, the moving contact simulation component is first connected to the operating mechanism under test via a linkage mechanism. The sliding friction force between the moving contact simulation component and the friction component is adjusted by squeezing the friction component through a compression structure. This sliding friction force is used to simulate the mechanical load of the circuit breaker. Additionally, a counterweight can be used to simulate the mechanical load of the circuit breaker. During use, a suitable counterweight is fixedly installed on the moving contact simulation component. The weight of the moving contact simulation component is adjusted by the counterweight, ensuring that the force required to move the moving contact simulation component via the linkage mechanism meets the mechanical load requirements for the test. Alternatively, both sliding friction and the counterweight can be used simultaneously to simulate the mechanical load. Compared to existing simulation test devices that can only simulate one type of mechanical load, the mechanical load simulation test device provided by this invention can simulate different mechanical loads as needed, facilitating simulation testing while reducing testing costs.

[0019] Furthermore, the extrusion structure includes a first extruder and a second extruder, and the friction element is an elastic element. In the axial direction of the load simulation hole, the elastic element is arranged between the first and second extruders, and at least one of the first and second extruders can be adjusted in the axial direction of the load simulation hole.

[0020] Beneficial effects: It is very convenient to use when adjusting the axial distance between the first and second extrusion parts in the load simulation hole to extrude the elastic part and to adjust the sliding friction between the friction part and the moving contact simulation part by utilizing the elastic deformation of the elastic part.

[0021] Furthermore, the first extrusion member is a step disposed within the load simulation hole, and the second extrusion member is a pressure plate movably installed at the opening of the load simulation hole, with the pressure plate and the step arranged opposite to each other in the axial direction of the load simulation hole.

[0022] Beneficial effects: Since the extrusion component formed by the step is a fixed component, when adjusting the extrusion pressure on the elastic component, it is only necessary to move the adjusting plate in the axial direction of the load simulation hole, which makes the adjustment more convenient.

[0023] Furthermore, a threaded mounting hole is provided at the edge of the load simulation hole, and the threaded mounting hole extends in the same direction as the axis of the load simulation hole. The pressure plate is provided with a bolt through hole for the bolt to pass through. The bolt passes through the bolt through hole and the threaded mounting hole in sequence to fix the pressure plate at the opening of the load simulation hole.

[0024] Beneficial effects: The pressure plate is fixed to the edge of the load simulation hole by bolts. By tightening or loosening the bolts, the distance between the pressure plate and the step can be changed, thereby changing the sliding friction between the friction component and the moving contact simulation component, making the adjustment more accurate and convenient.

[0025] Furthermore, the counterweight has an axisymmetric structure so that it can be arranged coaxially with the moving contact simulation element.

[0026] Beneficial effect: The counterweight has an axisymmetric structure, which can prevent the moving contact simulation component from swaying during movement. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the mechanical load simulation test device for the operating mechanism of the present invention (the support is not shown in the figure);

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0030] Figure 4 This is a schematic diagram of the mechanical load simulation test device for the operating mechanism of the present invention;

[0031] Figure 5 yes Figure 4 Rear view;

[0032] Figure 6 This is a cross-sectional view of the mechanical load simulation test device for the operating mechanism of the present invention.

[0033] The names of the components corresponding to the corresponding reference numerals in the figure are:

[0034] 100. Load simulation seat; 101. Damping support; 102. Load simulation hole; 103. Annular step; 104. Upper annular pressure plate; 105. Lower annular pressure plate; 106. Upper elastic element; 107. Lower elastic element; 108. First guide ring; 109. Moving contact simulation element; 110. Counterweight; 111. Guide cylinder; 112. Second guide ring; 113. Guide seat; 114. Valve seat; 115. Upper valve plate; 116. Lower valve plate; 117. Spring seat; 118. Buffer spring; 119. Guide rod; 120. Pull rod; 122. Crank arm; 123. Connecting rod; 124. Buffer bracket; 125. Buffer; 126. Connecting cylinder; 127. Bracket; 128. Crank arm box; 129. Counter; 130. Baffle; 131. Sensor support; 132. Sensor. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0040] The present invention will be further described in detail below with reference to embodiments.

[0041] Example 1 of the mechanical load simulation test device for the operating mechanism in this invention:

[0042] like Figure 1 and Figure 3 As shown, the mechanical load simulation test device for the operating mechanism (hereinafter referred to as the test device) provided in this embodiment includes a mechanical load simulation component and a moving contact simulation component 109. The moving contact simulation component 109 is provided with a linkage mechanism for connecting with the operating mechanism. The mechanical load simulation component includes a mechanical load simulation base 100 and a counterweight 110. The mechanical load simulation base 100 is provided with a friction adjustment mechanism and a load simulation hole 102. The friction adjustment mechanism includes a friction component and a pressing structure.

[0043] In this embodiment, as Figure 1 and Figure 3 As shown, the mechanical load simulation base 100 includes a damping support 101, and a load simulation hole 102 is arranged on the damping support 101. For ease of description, the axial direction of the load simulation hole 102 is defined as the up-down direction, and the radial direction of the load simulation hole 102 is defined as the in-out direction, wherein the direction toward the central axis of the load simulation hole 102 is defined as in-in. A friction element is arranged in the load simulation hole 102 to slide in engagement with the moving contact simulation element 109.

[0044] In this embodiment, the friction element is an elastic element, and the extrusion structure includes a first extrusion element and a second extrusion element. Specifically, the first extrusion element is a step disposed within the load simulation hole, and the second extrusion element is a pressure plate movably installed at the opening of the load simulation hole 102. The elastic element is arranged between the first and second extrusion elements. To ensure a more uniform extrusion force applied to the elastic element, the step is specifically an annular step, and the pressure plate is specifically an annular pressure plate. The annular pressure plate and the annular step are arranged coaxially and opposite to each other.

[0045] In this embodiment, as Figure 3 As shown, there are two sets of elastic elements: an upper elastic element 106 and a lower elastic element 107. Both the upper and lower elastic elements are annular elastic elements, and the radial dimension of the annular elastic element matches the radial dimension of the load simulation hole 102. Specifically, the annular elastic element is an annular rubber pad. There are two corresponding annular pressure plates: an upper annular pressure plate 104 and a lower annular pressure plate 105. The upper annular pressure plate 104 is coaxially mounted at the upper edge of the load simulation hole 102, and the lower annular pressure plate 105 is coaxially mounted at the lower edge of the load simulation hole 102. The upper elastic element 106 is arranged between the upper annular pressure plate 104 and the annular step 103, and the elastic element 107 is arranged between the annular step 103 and the lower annular pressure plate 105.

[0046] In this embodiment, the upper and lower annular pressure plates can be adjusted in position in the vertical direction to adjust the compressive force on the corresponding elastic element. Specifically, threaded mounting holes are provided at the upper and lower edges of the load simulation hole 102, and bolt through holes are provided on the upper and lower annular pressure plates. Bolts pass through the bolt through holes and threaded mounting holes in sequence to fix the upper and lower annular pressure plates at the corresponding edges of the load simulation hole 102.

[0047] In this embodiment, when it is necessary to adjust the sliding friction between the moving contact simulation element 109 and the elastic element, since the adjustment principles of the upper elastic element 106 and the lower elastic element 107 are the same, only the adjustment of the lower elastic element 107 will be described in detail. When it is necessary to increase the sliding friction between the moving contact simulation element 109 and the elastic element, by tightening the corresponding bolts on the lower annular pressure plate 105, the distance between the lower annular pressure plate 105 and the annular step 103 is reduced, the compressive force on the lower elastic element 107 in the vertical direction increases, and the deformation of the lower elastic element 107 in the internal and external directions increases, thereby increasing the sliding friction between the moving contact simulation element 109 and the elastic element. When it is necessary to reduce the sliding friction between the moving contact simulation element 109 and the elastic element, the distance between the lower annular pressure plate 105 and the annular step 103 is increased by loosening the corresponding bolts on the lower annular pressure plate 105. This reduces the compressive force on the lower elastic element 107 in the vertical direction, thereby reducing the deformation of the lower elastic element 107 in the internal and external directions, and thus reducing the sliding friction between the moving contact simulation element 109 and the elastic element. When loosening or tightening the bolts, a feeler gauge is used to measure between the lower annular pressure plate 105 and the mechanical load simulation seat 100. This ensures parallelism while allowing for precise adjustment of the movement distance of the lower annular pressure plate 105.

[0048] In this embodiment, the counterweight 110 is fixedly installed on the moving contact simulation component 109 to increase the weight of the moving contact simulation component 109. When simulating mechanical load, a counterweight 110 of corresponding weight can be added to the moving contact simulation component 109 so that the moving resistance of the moving contact simulation component 109 meets the target mechanical load. In addition, the counterweight 110 has an axisymmetric structure, specifically an annular block. The bottom of the moving contact simulation component 109 is provided with a threaded rod for the annular block to be fitted. The annular block is pressed and fixed on the moving contact simulation component 109 by a nut. To avoid affecting the movement of the moving contact simulation component 109 due to uneven distribution of the counterweight 110 on the moving contact simulation component 109, the annular block is arranged coaxially with the moving contact simulation component 109.

[0049] In this embodiment, to enhance the stability of the moving contact simulation component 109 during sliding, such as Figure 3 As shown, a first guide ring 108 is provided on the inner side of the annular step 103 for sliding cooperation with the moving contact simulation member 109, which reduces the swaying of the moving contact simulation member 109 during sliding, thereby reducing the wear on the elastic member.

[0050] In this embodiment, to further enhance the stability of the moving contact simulation element 109 during sliding, such as Figure 1 and Figure 2 As shown, the mechanical load simulation base 100 also includes a guide cylinder 111, which is fixedly installed on the upper part of the damping support 101 and arranged coaxially with the load simulation hole 102. The guide cylinder 111 guides the moving contact simulation component 109 by slidingly engaging with it. To reduce sliding wear on the moving contact simulation component 109, a second guide ring 112 is provided on the moving contact simulation component 109 for sliding engagement with the guide cylinder 111.

[0051] In this embodiment, as Figure 2 As shown, a guide seat 113 is provided on the mechanical load simulation base 100. The guide seat 113 is arranged on the side of the mechanical load simulation base 100 facing the linkage mechanism, that is, on the upper side of the guide cylinder 111. The guide seat 113 is provided with a guide hole for guiding and sliding cooperation with the linkage mechanism. When the moving contact simulation component 109 moves upward, a pneumatic reaction force is generated between the moving contact simulation component 109 and the guide seat 113, thereby reducing the sliding speed of the moving contact simulation component 109. In order to avoid the pneumatic reaction force being too large and affecting the movement of the moving contact simulation component 109, a pressure relief valve is provided on the guide seat 113. The pressure relief valve includes a valve seat 114, on which multiple vent holes are arranged. A valve core for blocking the vent holes is arranged at the corresponding position of the vent holes. The valve core includes an upper valve plate 115 and a lower valve plate 116. The upper valve plate 115 and the lower valve plate 116 have a vertical stroke, and the upper valve plate 115 is arranged above the lower valve plate 116. When the air pressure reaction force is too large, the air pressure will push the lower valve plate 116 to move upward. When the air flow of the exhaust port is still insufficient to meet the exhaust, the lower valve plate 116 pushes the upper valve plate 115 to move upward again until all the exhaust ports on the valve seat 114 are opened, thereby maximizing the exhaust volume.

[0052] In this embodiment, as Figure 2 As shown, a spring seat 117 is arranged above the upper and lower valve plates, and a buffer spring 118 is arranged between the spring seat 117 and the upper and lower valve plates. During the test, the spring force of the buffer spring 118 on the upper and lower valve plates is adjusted by rotating the screw thread to adjust the position of the spring seat in the vertical direction, thereby realizing the adjustment of the air pressure reaction force.

[0053] In this embodiment, as Figure 1As shown, the linkage mechanism includes a guide rod 119, a pull rod 120, a crank arm 122, and a connecting rod 123. The guide rod 119 extends vertically, with its lower end connected to the moving contact simulation component 109, and its upper end passing through a guide hole and connected to the crank arm 122 via the pull rod 120. The connecting rod 123 is arranged horizontally, with one end connected to the crank arm 122 and the other end used to connect to the operating mechanism under test. The operating mechanism can drive the moving contact simulation component 109 to slide up and down via the linkage mechanism. Since the technology of the operating mechanism driving the moving contact simulation component 109 to move up and down via the linkage mechanism is existing technology, it will not be described in detail here.

[0054] In this embodiment, as Figure 1 and Figure 4 As shown, the test apparatus also includes a buffer 125. The buffer 125 is fixed to the crank arm box 128 via a buffer bracket 124 and is threadedly connected to the buffer bracket 124 to facilitate adjustment of the buffer strength. The buffer 125 is a combination of hydraulic springs, which is prior art and will not be described in detail here. The buffer 125 is used to make pushing contact with the upper end of the pull rod 120 when the pull rod 120 moves upward, so as to buffer and absorb the overshoot force and prevent the moving contact simulation element 109 from overshooting.

[0055] In this embodiment, as Figure 4 , Figure 5 and Figure 6 As shown, the test apparatus also includes a support 127. The mechanical load simulation seat 100 is fixed on the support 127 via a connecting tube 126. A crank arm box 128 is also fixed on the support 127. The crank arm box 128 is located above the mechanical load simulation seat 100. The crank arm 122 is arranged in the crank arm box 128, and the buffer support 124 is arranged above the crank arm box 128.

[0056] In this embodiment, as Figure 4 and Figure 5 As shown, the crank arm 122 also includes a counter 129 and a digital-analog sensor. The counter 129 is spring-connected to the crank arm 122. The counter 129 counts each time the crank arm 122 moves, and the counter 129 can be used to determine whether the test device meets the test requirements. The digital-analog sensor is installed at the end of the crank arm 122. The digital-analog sensor includes a baffle 130, a sensor support 131 mounted on the crank arm box 128, and a sensor 132 mounted on the sensor support 131. During the test, the crank arm 122 swings, causing the baffle to swing. The baffle 130 rotates at an angle to block the sensor 132 on the sensor support 131. The digital-analog sensor and the sensor 132 display the speed and time data of the operating mechanism on the supporting device to determine whether the product is qualified. The supporting device is prior art and will not be described in detail here.

[0057] The testing apparatus provided in this embodiment is used as follows: First, adjust the bolts on the upper annular pressure plate 104 and the lower annular pressure plate 105 to change the sliding friction between the moving contact simulation component 109 and the upper elastic component 106 and the lower elastic component 107. Next, adjust the weight of the counterweight 110 on the moving contact simulation component 109 so that the sliding resistance of the moving contact simulation component meets the mechanical load required for the test. Then, connect the connecting rod 123 to the operating mechanism under test and start the operating mechanism under test to complete the simulation test. Compared with the simulation test apparatus in the prior art, which can only simulate one type of mechanical load, the testing apparatus provided in this embodiment can simulate different mechanical loads as needed, which facilitates simulation testing and reduces test costs.

[0058] In other embodiments of the mechanical load simulation test apparatus for operating mechanisms, the load simulation base is not provided with a guide seat.

[0059] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the load simulation seat does not include a guide cylinder, but only a damping support, and the length of the load simulation hole meets the sliding stroke required by the moving contact simulation element.

[0060] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the counterweight is not an axisymmetric structure and is not arranged coaxially with the moving contact simulation element.

[0061] In other embodiments of the mechanical load simulation test apparatus for operating mechanisms, the mechanical load simulation test apparatus does not include a counterweight and only uses sliding friction to simulate the mechanical load.

[0062] In other embodiments of the mechanical load simulation test apparatus for operating mechanisms, the mechanical load simulation test apparatus does not include a load simulation seat, but only uses counterweights to simulate mechanical loads.

[0063] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, three sets of elastic elements are arranged in the axial direction of the load simulation hole. Of course, only one set of elastic elements may be arranged in the axial direction of the load simulation hole.

[0064] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, no guide ring is provided on the inner side of the annular step, and the inner side of the annular step does not contact the moving contact simulation component.

[0065] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the pressure plate is not an annular pressure plate, but rather multiple pressure plates are arranged circumferentially at intervals along the edge of the hole.

[0066] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the steps are not annular steps, but rather multiple steps are arranged at circumferential intervals along the load simulation hole.

[0067] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the elastic element is not a ring-shaped elastic element, but a cylindrical elastic element, and multiple mounting slots for mounting the cylindrical elastic element are arranged circumferentially around the load simulation hole. Alternatively, the elastic element is a semi-circular arc-shaped elastic element, and the radial dimension of the elastic element matches the radial dimension of the load simulation hole.

[0068] In other embodiments of the mechanical load simulation test device for the operating mechanism, the pressure plate is provided with a mounting plate for fixing to the damping support. The mounting plate is arranged perpendicularly to the pressure plate and extends in the vertical direction. Multiple locating pin holes are spaced apart along the extending direction of the mounting plate. The damping support is provided with mounting pin holes. When simulating mechanical load, the corresponding locating pin holes are aligned with the mounting pin holes, and locating pins are inserted to press the pressure plate against the elastic element. Because the locating pin holes are spaced apart in the vertical direction, the distance between the pressure plate and the step changes when different locating pin holes are aligned with the mounting pin holes, thereby changing the compressive force on the elastic element.

[0069] In other embodiments of the mechanical load simulation test device for the operating mechanism, pressure caps are respectively arranged at both ends of the load simulation hole. The two pressure caps have external thread sections that engage with the load simulation hole, and the load simulation hole has internal thread sections that engage with the external thread sections on the two pressure caps. Both pressure caps can be adjusted axially in the load simulation hole. One of the two pressure caps forms a first extrusion member, and the other forms a second extrusion member.

[0070] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the friction element is not an elastic element, but an arc-shaped friction plate. The extrusion structure includes a set screw, and the wall of the load simulation hole is provided with a threaded hole for installing the set screw, the threaded hole extending radially along the load simulation hole. By screwing the set screw to extrude the arc-shaped friction plate, the sliding friction force between the friction element and the moving contact simulation element can be adjusted.

[0071] In other embodiments of the mechanical load simulation test apparatus for the operating mechanism, the elastic element is made of polyurethane.

[0072] An embodiment of the mechanical load simulation component for the operating mechanism in this invention:

[0073] The specific structure of the mechanical load simulation component for the operating mechanism provided in this embodiment is the same as that of the mechanical load simulation component in any embodiment of the mechanical load simulation test device for the operating mechanism described above.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A mechanical load simulation component for an operating mechanism, characterized in that, The mechanical load simulation component includes a mechanical load simulation base (100), which is provided with a friction adjustment mechanism and a load simulation hole (102) for the movable contact simulation component (109) to be movably assembled. The friction adjustment mechanism includes a friction element and a pressing structure. The friction element is arranged in the load simulation hole (102) to slide with the movable contact simulation component (109). The pressing structure is used to push the friction element to adjust the sliding friction between the friction element and the movable contact simulation component (109). The mechanical load simulation component includes a counterweight (110) for fixed installation on the movable contact simulation component (109). The counterweight (110) is used to adjust the weight of the movable contact simulation component (109).

2. The mechanical load simulation component for the operating mechanism according to claim 1, characterized in that, The extrusion structure includes a first extruder and a second extruder, and the friction element is an elastic element. In the axial direction of the load simulation hole (102), the elastic element is arranged between the first and second extruders. At least one of the first and second extruders can be adjusted in the axial direction of the load simulation hole (102).

3. The mechanical load simulation component for the operating mechanism according to claim 2, characterized in that, The first extrusion member is a step provided in the load simulation hole (102), and the second extrusion member is a pressure plate for being movably installed at the opening of the load simulation hole (102). The pressure plate and the step are arranged opposite to each other in the axial direction of the load simulation hole (102).

4. The mechanical load simulation component for the operating mechanism according to claim 3, characterized in that, The load simulation hole (102) has a threaded mounting hole at the edge of the hole. The threaded mounting hole extends in the same direction as the axis of the load simulation hole (102). The pressure plate has a bolt through hole for the bolt to pass through. The bolt passes through the bolt through hole and the threaded mounting hole in sequence to fix the pressure plate at the opening of the load simulation hole (102).

5. The mechanical load simulation component for the operating mechanism according to claim 3, characterized in that, The pressure plate is an annular pressure plate, and the step is an annular step (103). The annular pressure plate and the annular step (103) are arranged coaxially and opposite each other.

6. A mechanical load simulation test device for an operating mechanism, comprising a moving contact simulation component (109), wherein the moving contact simulation component (109) is provided with a linkage mechanism for connection with the operating mechanism, characterized in that, It also includes a mechanical load simulation component, which includes a mechanical load simulation base (100). The mechanical load simulation base (100) is provided with a friction adjustment mechanism and a load simulation hole (102) for the movable contact simulation component (109) to be movably assembled. The friction adjustment mechanism includes a friction element and a pressing structure. The friction element is arranged in the load simulation hole (102) to slide with the movable contact simulation component (109). The pressing structure is used to push the friction element to adjust the sliding friction between the friction element and the movable contact simulation component (109). The mechanical load simulation component includes a counterweight (110) for fixed installation on the movable contact simulation component (109). The counterweight (110) is used to adjust the weight of the movable contact simulation component (109).

7. The mechanical load simulation test device for the operating mechanism according to claim 6, characterized in that, The extrusion structure includes a first extruder and a second extruder, and the friction element is an elastic element. In the axial direction of the load simulation hole (102), the elastic element is arranged between the first and second extruders. At least one of the first and second extruders can be adjusted in the axial direction of the load simulation hole (102).

8. The mechanical load simulation test device for the operating mechanism according to claim 7, characterized in that, The first extrusion member is a step provided in the load simulation hole (102), and the second extrusion member is a pressure plate for being movably installed at the opening of the load simulation hole (102). The pressure plate and the step are arranged opposite to each other in the axial direction of the load simulation hole (102).

9. The mechanical load simulation test device for the operating mechanism according to claim 8, characterized in that, The load simulation hole (102) has a threaded mounting hole at the edge of the hole. The threaded mounting hole extends in the same direction as the axis of the load simulation hole (102). The pressure plate has a bolt through hole for the bolt to pass through. The bolt passes through the bolt through hole and the threaded mounting hole in sequence to fix the pressure plate at the opening of the load simulation hole (102).

10. The mechanical load simulation test device for the operating mechanism according to claim 6, characterized in that, The counterweight (110) has an axisymmetric structure for coaxial arrangement with the moving contact simulation element (109).

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