Wear-resistant electrical control travel switch
By installing a lubrication component between the limit switch shaft and the drive chamber, automatic flow and lubrication of lubricating oil are achieved, solving the problem of severe shaft wear and improving the service life of the equipment.
Patent Information
- Application Number
- CN202423154465.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing limit switch shaft is prone to dust accumulation and is difficult to lubricate, resulting in severe wear and affecting its service life.
A wear-resistant electrical control limit switch was designed. By setting a lubrication component between the rotating shaft and the drive chamber, lubricating oil is introduced through the lubrication component to reduce wear. The lubrication component includes a baffle, a guide rod, a bearing, and a buffer component to achieve automatic flow and lubrication of lubricating oil.
It effectively reduces shaft wear, extends the service life of limit switches, and enhances the wear resistance of equipment.
Smart Images
Figure CN223598560U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to travel switch technical field especially relates to a wear -resisting electrical control travel switch. BACKGROUND
[0002] Travel switch is a kind of position switch (also known as limit switch), it is a commonly used small current main order electrical appliance, is widely used in machine tool, hoisting and transporting machinery, metallurgical machinery and gate device and other equipment, is used to limit the position or stroke of moving machine, so that moving machine is automatically stopped, reverse movement, variable speed movement or automatically reciprocating movement according to certain position or stroke.
[0003] The inventor found in the process of using travel switch in daily life that when travel switch is triggered, it is driven by swing arm to rotate rotating shaft to control normally open and normally closed contact to adjust different circuit connection, since rotating shaft is continuously rotating and rotating shaft is exposed to dust, lubrication is needed, and rotating shaft gap is small, so it is inconvenient to drop lubricating oil. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the shortcomings in prior art and provides a wear -resisting electrical control travel switch.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wear -resisting electrical control travel switch, including travel switch body, the travel switch body includes backplate, wherein the surface of backplate is provided with switch chamber, the upper portion of switch chamber is provided with drive chamber, wherein drive chamber is fixed between backplate, rotating shaft is rotatably installed on drive chamber, the surface of rotating shaft is provided with swing arm, rotating shaft rotation makes drive chamber connecting rod move in vertical direction, further makes connecting rod drive contact in switch chamber to switch, lubricating member is arranged between rotating shaft and drive chamber, when lubricating oil is added, lubricating member can guide lubricating oil to gap between rotating shaft and drive chamber to lubricate.
[0006] The effect reached by the above-mentioned components is that swing arm is pushed, swing arm drives rotating shaft to rotate, rotating shaft drives contact in switch chamber to switch to complete travel switch work (since travel switch is a product sold on the market, the principle is that swing arm drives connecting rod through cam structure, connecting rod switches normally open and normally closed two contact working mode to achieve switching two circuits, so the principle is not described in detail), when swing arm is in normal state (i.e. swing arm vertical state), lubricating oil pot can be held to extrude lubricating oil to lubricating member, lubricating oil lubricates rotating shaft and drive chamber along lubricating member, further reduces rotating shaft wear and improves the service life of switch.
[0007] Preferably, the lubricating member comprises a baffle plate and a mounting base, wherein the mounting base is fixed on the switch chamber, a guide rod is rotatably mounted in the mounting base, and the baffle plate is mounted on the surface of the rotating shaft and rotatably connected to the bearing between the rotating shaft and the driving chamber.
[0008] The above-mentioned components achieve the effect that the bearing is arranged between the rotating shaft and the driving chamber, the bearing facilitates the rotation between the rotating shaft and the driving chamber, the oil nozzle of the oil can is pressed against the guide rod when lubrication is needed, the guide rod rotates in the mounting base, the guide rod port contacts the baffle plate, the oil squeezed out of the oil nozzle flows along the guide rod to the baffle plate, and then flows along the baffle plate to the bearing between the rotating shaft and the driving chamber for lubrication.
[0009] Preferably, the guide rod is divided into two sections at the mounting position of the mounting base, in the normal state, the lower section of the guide rod is vertically attached to the surface of the driving chamber, and the upper section of the guide rod is bent away from the driving chamber, in the lubrication state, the lower section of the guide rod is pressed against the surface of the baffle plate, and the upper section of the guide rod is attached to the surface of the driving chamber.
[0010] Preferably, the cross section of the guide rod is V-shaped, and the side of the baffle plate close to the driving chamber is provided with an inclined surface to the rotating shaft.
[0011] The above-mentioned components achieve the effect that the V-shaped guide rod facilitates the flow of lubricating oil, and the inclined surface of the baffle plate facilitates the flow of oil.
[0012] Preferably, the side of the baffle plate close to the driving chamber is provided with a guide groove, the guide groove and the swing arm are in the same plane, the lower end of the guide groove is provided with a guide rod, and the free end of the guide rod is bent towards the bearing.
[0013] The above-mentioned components achieve the effect that the guide rod guides the oil to flow through the guide groove, the oil flows along the guide rod to the bearing, and then lubricates the bearing, thereby facilitating the lubrication of narrow gaps.
[0014] Preferably, the lower end of the guide rod is provided with a counterweight, and the counterweight is close to the driving chamber.
[0015] The above-mentioned components achieve the effect that the counterweight increases the gravity of the lower end of the guide rod to ensure that the lower end of the guide rod is parallel to the driving chamber in the normal state.
[0016] Preferably, the surface of the driving chamber is provided with a magnetic block, the counterweight is an iron block, and the counterweight of the iron block is adsorbed on the surface of the magnetic block in the normal state of the guide rod.
[0017] Preferably, the upper end of the swing arm is provided with a wheel-shaped buffer member, and the buffer member can rotate relative to the swing arm.
[0018] Preferably, the buffer component comprises a wheel, wherein the wheel and the swing arm are rotationally assembled, the front end of the wheel is provided with an annular notch towards the rear, the inner wall of the annular notch is provided with an annular groove, the inside of the annular groove is sleeved with a rubber sleeve, the surface of the annular notch is provided with a wheel cover, and the wheel cover is matched with the wheel clamping column rubber sleeve.
[0019] The effect achieved by the above-mentioned components is that the wheel cover is installed in the annular notch (which can be connected by interference fit or thread connection, and then the wheel is composed into a complete roller shape), and the rubber sleeve is fixed in the annular groove on the surface of the wheel, so that the wear resistance can be improved during the extrusion of the wheel.
[0020] Compared with the prior art, the advantages and positive effects of the utility model are that,
[0021] In the utility model, when the swing arm is in normal state (i.e. the swing arm is in vertical state), the lubricating oil nozzle can be held by hand to extrude lubricating oil to the lubricating component, the lubricating oil lubricates the rotation shaft and the driving chamber along the lubricating component, and the service life of the switch is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 A three-dimensional structure schematic diagram of the utility model is provided.
[0023] Figure 2 A partial disassembly schematic diagram of the buffer component in the utility model is provided.
[0024] Figure 3 A partial cross-sectional schematic diagram of the buffer component in the utility model is provided.
[0025] Figure 4 A partial cross-sectional schematic diagram of the lubricating component in the utility model is provided.
[0026] Figure 5 An enlarged view of A in the utility model is provided. Figure 4
[0027] Legend: 1, back plate; 2, switch chamber; 3, driving chamber; 4, rotation shaft; 5, swing arm; 6, lubricating component; 61, baffle; 62, bearing; 63, mounting seat; 64, flow guide rod; 65, counterweight; 66, magnetic block; 67, flow guide groove; 68, flow guide rod; 7, buffer component; 71, wheel; 72, annular groove; 73, rubber sleeve; 74, wheel cover. DETAILED DESCRIPTION
[0028] Example 1, as Figures 1-5 As shown, a wear-resistant electrical control travel switch includes a travel switch body, the travel switch body includes a back plate 1, wherein the surface of the back plate 1 is mounted with a switch chamber 2, the upper part of the switch chamber 2 is mounted with a driving chamber 3, wherein the driving chamber 3 and the back plate 1 are fixed, the driving chamber 3 is rotatably mounted with a rotating shaft 4, the surface of the rotating shaft 4 is mounted with a swing arm 5, the rotating of the rotating shaft 4 makes the driving chamber 3 connecting rod move in the vertical direction, and then makes the connecting rod drive the contact in the switch chamber 2 to switch, the lubricating member 6 is arranged between the rotating shaft 4 and the driving chamber 3, when the lubricating oil is added dropwise, the lubricating member 6 can guide the lubricating oil into the gap between the rotating shaft 4 and the driving chamber 3 for lubrication. Push the swing arm 5, the swing arm 5 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the contact in the switch chamber 2 to switch and then completes the travel switch work (since the travel switch is a product sold on the market, the essential principle is that the swing arm 5 drives the connecting rod through the cam structure, the connecting rod switches the normally open and normally closed two contact working modes, so as to switch two circuits, and the principle is not described in detail here), when the swing arm 5 is in normal state (i.e. the swing arm 5 is in vertical state), the oil nozzle of the lubricating oil pot can be held to extrude the lubricating oil to the lubricating member 6, the lubricating oil lubricates the rotating shaft 4 and the driving chamber 3 along the lubricating member 6, and then reduces the wear of the rotating shaft 4 and improves the service life of the switch. The lubricating member 6 includes a baffle plate 61 and a mounting seat 63, wherein the mounting seat 63 is fixed on the switch chamber 2, the inside of the mounting seat 63 is rotatably mounted with a flow guide rod 64, the baffle plate 61 is mounted on the surface of the rotating shaft 4, and the rotating shaft 4 and the driving chamber 3 are rotatable through the bearing 62. The bearing 62 is arranged between the rotating shaft 4 and the driving chamber 3, the bearing 62 can facilitate the rotation between the rotating shaft 4 and the driving chamber 3, when lubrication is needed, the oil nozzle of the oil pot is pressed against the flow guide rod 64, the flow guide rod 64 rotates between the mounting seat 63, and then the port of the flow guide rod 64 contacts the baffle plate 61, the oil extruded by the oil nozzle can flow along the flow guide rod 64 to the baffle plate 61, and then can flow along the baffle plate 61 to the gap between the rotating shaft 4 and the driving chamber 3 for lubrication. The flow guide rod 64 is divided into two sections at the mounting position of the mounting seat 63, in normal state, the lower section of the flow guide rod 64 is vertically attached to the surface of the driving chamber 3, and the upper section is bent away from the driving chamber 3, when lubrication is needed, the lower section of the flow guide rod 64 rotates on the surface of the mounting seat 63, the port of the lower section is pressed against the surface of the baffle plate 61, and the upper section is attached to the driving chamber 3. The cross section of the flow guide rod 64 is V-shaped, the side of the baffle plate 61 close to the driving chamber 3 is provided with an inclined surface to the rotating shaft 4. The V-shaped flow guide rod 64 can facilitate the flow of lubricating oil, and the inclined surface of the baffle plate 61 also facilitates the flow of oil. The side of the baffle plate 61 close to the driving chamber 3 is provided with a flow guide groove 67, wherein the flow guide groove 67 and the swing arm 5 are in the same plane, the lower end of the flow guide groove 67 is provided with a flow guide rod 68, and the free end of the flow guide rod 68 is bent towards the bearing 62.The guide rod 64 guides the oil to flow through the guide groove 67, and the oil flows along the guide rod 68 to the bearing 62 to lubricate the bearing 62, so that the narrow gap can be conveniently lubricated. The lower end of the guide rod 64 is provided with a counterweight 65, wherein the counterweight 65 is close to the driving chamber 3. The counterweight 65 increases the gravity of the lower end of the guide rod 64 to ensure that the guide rod 64 is always parallel to the driving chamber 3 in the normal state. The surface of the driving chamber 3 is provided with a magnetic block 66, and the counterweight 65 is an iron block. In the normal state of the guide rod 64, the iron block counterweight 65 is adsorbed on the surface of the magnetic block 66. The upper end of the swing arm 5 is provided with a wheel-shaped buffer member 7, wherein the buffer member 7 can rotate with the swing arm 5. The buffer member 7 includes a wheel 71, wherein the wheel 71 is rotatably assembled with the swing arm 5. The front end of the wheel 71 is provided with an annular notch facing the rear to form a stepped structure. The inner wall of the annular notch is provided with an annular groove 72. The annular groove 72 is sleeved with a rubber sleeve 73. The surface of the annular notch is provided with a wheel cover 74, wherein the wheel cover 74 cooperates with the wheel 71 to clamp the rubber sleeve 73. The wheel cover 74 is installed in the annular notch (which can adopt interference fit or threaded connection, so as to form a complete roller shape with the wheel 71), wherein the rubber sleeve 73 is fixed in the annular groove 72 on the surface of the wheel 71. The rubber sleeve 73 can improve the wear resistance during the extrusion of the wheel 71.
[0029] The working principle is that the swing arm 5 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the contact in the switch chamber 2 to switch and thus complete the stroke switch work (since the stroke switch is a product sold on the market, the essential principle is that the swing arm 5 drives the connecting rod through the cam structure, the connecting rod switches the working mode of the two contacts of the normally open and normally closed type, so as to switch two circuits, and thus the principle is not described in detail), when the swing arm 5 is in the normal state (i.e. the swing arm 5 is in the vertical state), the oil nozzle of the oil can be held to extrude the lubricating oil on the lubricating member 6, the lubricating oil lubricates the rotating shaft 4 and the driving chamber 3 along the lubricating member 6, thus reducing the wear of the rotating shaft 4 and prolonging the service life of the switch, the bearing 62 is arranged between the rotating shaft 4 and the driving chamber 3, the bearing 62 can facilitate the rotation between the rotating shaft 4 and the driving chamber 3, when lubrication is needed, the oil nozzle of the oil can is pressed against the flow guide rod 64, the flow guide rod 64 rotates between the mounting seats 63, thus making the port of the flow guide rod 64 contact the baffle disc 61, the oil extruded by the oil nozzle can flow along the flow guide rod 64 to the baffle disc 61, and thus can flow along the baffle disc 61 to the rotating shaft 4 and the driving chamber 3 for lubrication, the V-shaped flow guide rod 64 can facilitate the flow of the lubricating oil, the baffle disc 61 is provided with an inclined surface, which also facilitates the flow of the oil, the flow guide rod 64 guides the oil through the flow guide groove 67, the oil flows along the flow guide rod 68 to the bearing 62, thus lubricating the bearing 62, so that the narrow gap can be lubricated conveniently, the counterweight 65 increases the gravity of the lower end of the flow guide rod 64 to ensure that the flow guide rod 64 is normally parallel to the driving chamber 3, the wheel cover 74 is installed in the annular groove (can be connected by interference fit or threaded connection, thus the wheel 71 forms a complete roller shape), the rubber sleeve 73 is fixed in the annular groove 72 on the surface of the wheel 71, and the wear resistance of the wheel 71 can be improved during extrusion.
[0030] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the protection scope of the technical scheme of the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, detachable connection or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A wear-resistant electrical control travel switch comprising a travel switch body, characterized in that: The travel switch body comprises a back plate (1), wherein a switch chamber (2) is mounted on the surface of the back plate (1), a driving chamber (3) is mounted above the switch chamber (2), and the driving chamber (3) is fixed between the back plate (1), a rotating shaft (4) is rotatably mounted on the driving chamber (3), an oscillating arm (5) is mounted on the surface of the rotating shaft (4), and a lubricating member (6) is arranged between the rotating shaft (4) and the driving chamber (3), and the lubricating member (6) can guide the lubricating oil into the gap between the rotating shaft (4) and the driving chamber (3) for lubrication when the lubricating oil is added dropwise.
2. The wear-resistant electrical control travel switch of claim 1, wherein: The lubricating member (6) comprises a baffle disc (61) and a mounting seat (63), wherein the mounting seat (63) is fixed on the switch chamber (2), a flow guide rod (64) is rotatably mounted in the mounting seat (63), the baffle disc (61) is mounted on the surface of the rotating shaft (4), and the rotating shaft (4) and the driving chamber (3) are rotatable through a bearing (62).
3. The wear-resistant electrical control travel switch of claim 2, wherein: The flow guide rod (64) is divided into two sections at the mounting position of the mounting seat (63), and in the normal state, the lower section of the flow guide rod (64) is vertically attached to the surface of the driving chamber (3), and the upper section is bent away from the driving chamber (3), in the lubricating state, the lower section of the flow guide rod (64) is rotatable on the surface of the mounting seat (63) and abuts against the surface of the baffle disc (61), and the upper section is attached to the driving chamber (3).
4. The wear-resistant electrical control travel switch of claim 3, wherein: The cross section of the flow guide rod (64) is V-shaped, and the side of the baffle disc (61) close to the driving chamber (3) is provided with a slope to the rotating shaft (4).
5. The wear-resistant electrical control travel switch of claim 4, wherein: The side of the baffle disc (61) close to the driving chamber (3) is provided with a flow guide groove (67), wherein the flow guide groove (67) and the oscillating arm (5) are in the same plane, the lower end of the flow guide groove (67) is provided with a flow guide rod (68), and the free end of the flow guide rod (68) is bent towards the bearing (62).
6. The wear-resistant electrical control travel switch of claim 5, wherein: The lower end of the flow guide rod (64) is provided with a counterweight (65), wherein the counterweight (65) is close to the driving chamber (3).
7. The wear resistant electrical control travel switch of claim 6, wherein: The surface of the driving chamber (3) is provided with a magnetic block (66), the counterweight (65) is an iron block, and in the normal state of the flow guide rod (64), the counterweight (65) of the iron block is adsorbed on the surface of the magnetic block (66).
8. The wear resistant electrical control travel switch of claim 1, wherein: The upper end of the oscillating arm (5) is provided with a wheel-shaped buffer member (7), wherein the buffer member (7) is rotatable relative to the oscillating arm (5).
9. The wear resistant electrical control travel switch of claim 8, wherein: The buffer member (7) comprises a wheel (71), wherein the wheel (71) is rotatably assembled between the oscillating arm (5), the front end of the wheel (71) is provided with an annular notch towards the rear to form a stepped structure, an annular groove (72) is formed in the inner wall of the annular notch, a rubber sleeve (73) is sleeved in the annular groove (72), a wheel cover (74) is assembled on the surface of the annular notch, and the wheel cover (74) is matched with the wheel (71) to clamp the rubber sleeve (73).