Ejector

Abstract

This application discloses an ejector, belonging to the field of mechanical maintenance technology. The ejector is used to eject a pin from a flange assembly. The ejector includes an ejection mechanism and a positioning and locking assembly. The ejection mechanism includes a drive unit and an ejection portion connected to the drive unit. The positioning and locking assembly includes a first support plate, a connecting plate, and a second support plate connected to each other. The first support plate and the second support plate are disposed on the same side of the connecting plate, and a latch is formed between the first support plate and the second support plate for engaging the flange assembly. The first support plate is connected to the ejection portion and supported outside the ejection portion. The second support plate has a clearance opening opposite to the output end of the ejection portion. This application simplifies the operation process, enabling rapid installation even in confined spaces. Furthermore, the process of ejecting the pin is effortless and the operation is safe and reliable.

Description

Technical Field

[0001] This application belongs to the field of mechanical maintenance technology, and in particular relates to an ejector. Background Technology

[0002] The output end of the power source and the input end of the power actuator are connected by a flange assembly. For example, the output end of the motor is connected to the fan through a flange assembly. The flange assembly includes a first flange and a second flange. A pin is inserted into the through hole of the first flange and the second flange. At the same time, an elastic sleeve is fixed on the outer periphery of the pin. This can reduce the hard contact between the first flange and the second flange and ensure the stability of power transmission.

[0003] However, the power source and power actuators will vibrate during long-term operation. This vibration can cause the elastic sleeve outside the pin to gradually age and deform, or the pin to rust and become stuck in the through hole. It is necessary to remove the pin from the through hole of the flange assembly. In space-constrained working environments, disassembling the pin by hammering is laborious and difficult to operate. Utility Model Content

[0004] This application aims to at least solve the technical problems of existing technologies that rely on laborious and difficult-to-operate hammering.

[0005] This application provides an ejector for ejecting a pin within a flange assembly, the ejector comprising: an ejection mechanism and a positioning snap-fit ​​assembly; The ejection mechanism includes a drive unit and an ejection unit connected to the drive unit; The positioning and snapping assembly includes a first support plate, a connecting plate, and a second support plate that are connected to each other. The first support plate and the second support plate are disposed on the same side of the connecting plate, and a snap-fit ​​is formed between the first support plate and the second support plate for the flange assembly to snap into place. The first support plate is connected to the ejector portion and supported outside the ejector portion. The second support plate has a clearance opening opposite to the output end of the ejector portion.

[0006] According to one embodiment of this application, the protruding portion passes through the first support plate.

[0007] According to one embodiment of this application, the connecting plate includes a first plate and a second plate; One end of the first plate is fixedly connected to the first support plate, and the other end of the first plate is hinged to the second plate. The second plate is fixedly connected to the second support plate.

[0008] According to one embodiment of this application, the length of the first plate is longer than that of the second plate.

[0009] According to one embodiment of this application, a positioning member is slidably disposed on the second support plate, the end of the positioning member being used to insert into the through hole of the flange assembly.

[0010] According to one embodiment of this application, the number of positioning elements is two, and the two positioning elements are located on both sides of the clearance opening.

[0011] According to one embodiment of this application, the positioning element is a tightening bolt.

[0012] According to one embodiment of this application, a flexible pipe is provided between the driving part and the ejector part, and the driving part is connected to the ejector part through the flexible pipe.

[0013] According to one embodiment of this application, the drive unit includes a hydraulic cylinder and a reversing valve connected by pipelines; the ejector unit includes a sleeve and an ejector rod; The valve port of the reversing valve is connected to the sleeve through the flexible pipe, and the ejector rod is located inside the sleeve; The ejector rod has an extended state and a retracted state. When it is in the extended state, the ejector rod extends out of the sleeve; when it is in the retracted state, the ejector rod is retracted into the sleeve.

[0014] According to one embodiment of this application, the reversing valve is a plunger-type reversing valve; and / or; the end of the ejector rod is threadedly connected to a head.

[0015] In summary, this application includes at least one of the following beneficial technical effects: Compared to traditional hammering methods, which require repeated adjustments to the striking angle and cannot guarantee the direction of force, making them laborious and difficult to operate in space-constrained work environments and prone to damaging the flange assembly, this application solves the problem by using a locking mechanism between the first and second support plates to secure the flange assembly. The output end of the ejector is aligned with the through-hole and clearance opening of the flange assembly, and the extension of the output end of the ejector pushes out the pin inside the through-hole of the flange assembly. This design simplifies the operation process, allows for rapid installation even in confined spaces, and the process of ejecting the pin is effortless and safe and reliable.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of the ejector provided in the embodiments of this application; Figure 2 This is the second schematic diagram of the ejector provided in the embodiments of this application.

[0018] Figure label: 100. Ejection mechanism; 110. Drive unit; 120. Ejection part; 130. Flexible pipe; 111. Hydraulic cylinder; 112. Directional valve; 121. Sleeve; 122. Ejection rod; 200. Positioning and locking assembly; 210. First support plate; 220. Connecting plate; 221. First plate; 222. Second plate; 230. Second support plate; 231. Clearance opening; 232. Positioning component; 240. Bayonet; a. Flange assembly; b. Pin. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In a mechanical transmission system, the output end of the power source and the input end of the power actuator are connected by a flange assembly. For example, the output end of the motor is connected to the fan through a flange assembly. The flange assembly includes a first flange and a second flange. A pin is inserted into the through hole of the first flange and the second flange, and an elastic sleeve is fixed to the outer periphery of the pin. This reduces the hard contact between the first flange and the second flange and ensures the stability of power transmission.

[0021] However, the power source and power actuators generate continuous vibrations during long-term operation, which causes the elastic sleeve outside the pin to gradually age and deform. When the performance of the elastic sleeve deteriorates, the pin needs to be removed from the through hole of the flange assembly. In space-constrained working environments, disassembling the pin by hammering is laborious, difficult to operate, and can easily damage the flange assembly.

[0022] The following is for reference. Figures 1-2 The ejector according to an embodiment of this application is described as being used to eject pin b within flange assembly a.

[0023] like Figure 1 As shown, the ejector includes: an ejection mechanism 100 and a positioning and engaging assembly 200; The ejection mechanism 100 includes a drive unit 110 and an ejection unit 120 connected to the drive unit 110. The drive unit 110 can be a hydraulic power source or a pneumatic power source, and this embodiment does not impose any restrictions. The drive unit 110 and the ejection unit 120 can be connected by a pipeline, and the drive unit 110 transmits power to the ejection unit 120, so that the output end of the ejection unit 120 performs a telescopic movement.

[0024] like Figure 2 As shown, the positioning and snapping assembly 200 includes a first support plate 210, a connecting plate 220, and a second support plate 230 that are connected to each other.

[0025] The first support plate 210 and the second support plate 230 are disposed on the same side of the connecting plate 220, and a bayonet 240 for engaging the flange assembly a is formed between the first support plate 210 and the second support plate 230. It should be noted that after the bayonet 240 is inserted into the flange assembly a in the thickness direction, the first support plate 210 and the second support plate 230 are distributed on both sides of the flange assembly a.

[0026] The first support plate 210 is connected to the ejector portion 120 and is supported outside the ejector portion 120. In actual operation, the ejector portion 120 passes through the first support plate 210. The second support plate 230 has a clearance opening 231 opposite to the output end of the ejector portion 120.

[0027] Specifically, when the flange assembly a is inserted into the bayonet 240 in the thickness direction, the output end of the ejector 120 is opposite to the through hole and clearance opening 231 of the flange assembly a. The drive unit 110 transmits power to the ejector 120, and the output end of the ejector 120 extends to eject the pin b in the through hole of the flange assembly a.

[0028] Compared to the traditional hammering method, which requires repeated adjustments to the striking angle and cannot guarantee the direction of force, is laborious and difficult to operate in space-constrained work environments, and is prone to damaging flange assembly a, this solution uses a locking mechanism 240 between the first support plate 210 and the second support plate 230 to secure flange assembly a. The output end of the ejector 120 aligns with the through hole and clearance opening 231 of flange assembly a, and the extension of the output end of the ejector 120 pushes out the pin b inside the through hole of flange assembly a. This design simplifies the operation process, allows for rapid installation even in confined spaces, and offers good centering, strong adaptability, and safe and reliable operation.

[0029] like Figure 2 As shown, in some embodiments, a flexible conduit 130 is provided between the driving part 110 and the ejector part 120, and the driving part 110 is connected to the ejector part 120 through the flexible conduit 130.

[0030] In this embodiment, the bending characteristics of the flexible pipe 130 allow the ejector portion 120 and the drive portion 110 to form a non-linear arrangement, so that the ejector portion 120 can adapt to the narrow operating space around the flange assembly a.

[0031] In some embodiments, the drive unit 110 includes a hydraulic cylinder 111 and a reversing valve 112 connected by a pipeline; the ejector unit 120 includes a sleeve 121 and an ejector rod 122; The valve port of the reversing valve 112 is connected to the sleeve 121 through the flexible pipe 130, and the ejector rod 122 is disposed inside the sleeve 121; The ejector rod 122 has an extended state and a retracted state. When it is in the extended state, the ejector rod 122 extends out of the sleeve 121; when it is in the retracted state, the ejector rod 122 is retracted into the sleeve 121.

[0032] In actual operation, the reversing valve 112 is a plunger-type reversing valve 112, and the valve core can be manually pushed and pulled to switch the oil circuit.

[0033] For example, the plunger-type directional valve 112 has a pressure rod and a reversing cock. The pressure rod is used to control the unidirectional flow of hydraulic oil, realizing the pressurization or depressurization of the oil. The reversing cock is used to control the flow direction of the entire oil circuit, realizing the extension or retraction of the ejector rod 122. A pressure gauge is also provided at the rear end of the pressure rod to monitor the pressure value during operation, display the ejection force in real time, and avoid overload.

[0034] In actual operation, a level gauge is also installed inside the hydraulic cylinder 111 to monitor the amount of hydraulic oil in the hydraulic cylinder 111, thereby ensuring the normal operation of the ejector.

[0035] In some embodiments, the end of the ejector rod 122 is threadedly connected to a mandrel. The mandrel may have a shape, such as a flat mandrel, a spherical mandrel, or a concave mandrel.

[0036] In this example, the push head at the end of the push rod 122 is fixed by a threaded connection. When it is necessary to adapt to pins b of different diameters, the original push head can be removed and replaced with a new push head of matching size. This can avoid the push force being dispersed due to insufficient contact area between the end of the push rod 122 and the pin b.

[0037] In some other embodiments, the ejector portion 120 also includes a valve core disposed within the sleeve 121, and the valve core is detachably connected to the ejector rod 122. When it is necessary to adapt to pins b of different diameters, different ejector rods 122 can also be replaced to achieve better ejection of the pins b.

[0038] like Figure 2As shown, in some embodiments, the connecting plate 220 includes a first plate 221 and a second plate 222; One end of the first plate 221 is fixedly connected to the first support plate 210, the other end of the first plate 221 is hinged to the second plate 222, and the second plate 222 is fixedly connected to the second support plate 230.

[0039] In this embodiment, when it is necessary to adjust the engagement angle between the bayonet 240 and the flange assembly a, the second plate 222 can rotate around the hinge point between it and the first plate 221, thereby changing the relative position between the first support plate 210 and the second support plate 230, so that the bayonet 240 can adapt to the flange assembly a in different installation postures, so that the bayonet 240 can engage with the flange assembly a.

[0040] In actual implementation, the length of the first plate 221 is longer than that of the second plate 222.

[0041] In some embodiments, a positioning member 232 is slidably passed through the second support plate 230, and the end of the positioning member 232 is used to be inserted into the through hole of the flange assembly a.

[0042] The positioning component 232 can be a tightening bolt, which is inserted into the through hole of the flange assembly a to achieve accurate positioning of the flange assembly a and prevent the flange assembly a from shifting during the ejection process.

[0043] The number of positioning elements 232 is two, and the two positioning elements 232 are located on both sides of the clearance opening 231.

[0044] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0047] In the description of this application, "multiple" means two or more.

[0048] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0049] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An ejector for ejecting a pin within a flange assembly, characterized in that, The ejector includes: an ejection mechanism and a positioning and locking assembly; The ejection mechanism includes a drive unit and an ejection unit connected to the drive unit; The positioning and snapping assembly includes a first support plate, a connecting plate, and a second support plate that are connected to each other. The first support plate and the second support plate are disposed on the same side of the connecting plate, and a snap-fit ​​is formed between the first support plate and the second support plate for the flange assembly to snap into place. The first support plate is connected to the ejector portion and supported outside the ejector portion. The second support plate has a clearance opening opposite to the output end of the ejector portion.

2. The ejector according to claim 1, characterized in that, The protruding part passes through the first support plate.

3. The ejector according to claim 1, characterized in that, The connecting plate includes a first plate and a second plate; One end of the first plate is fixedly connected to the first support plate, and the other end of the first plate is hinged to the second plate. The second plate is fixedly connected to the second support plate.

4. The ejector according to claim 3, characterized in that, The length of the first plate is longer than that of the second plate.

5. The ejector according to claim 1, characterized in that, A positioning element is slidably inserted on the second support plate, and the end of the positioning element is used to be inserted into the through hole of the flange assembly.

6. The ejector according to claim 5, characterized in that, The number of positioning elements is two, and the two positioning elements are located on both sides of the clearance opening.

7. The ejector according to claim 6, characterized in that, The positioning component is a tightening bolt.

8. The ejector according to claim 1, characterized in that, A flexible pipe is provided between the driving part and the ejector part, and the driving part is connected to the ejector part through the flexible pipe.

9. The ejector according to claim 8, characterized in that, The drive unit includes a hydraulic cylinder and a reversing valve connected by pipelines; the ejection unit includes a sleeve and an ejection rod. The valve port of the reversing valve is connected to the sleeve through the flexible pipe, and the ejector rod is located inside the sleeve; The ejector rod has an extended state and a retracted state. When it is in the extended state, the ejector rod extends out of the sleeve; when it is in the retracted state, the ejector rod is retracted into the sleeve.

10. The ejector according to claim 9, characterized in that, The reversing valve is a plunger-type reversing valve; and / or; the end of the ejector rod is threadedly connected to a mandrel.

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