Rolling guide shoe capable of changing fulcrum and elevator

Abstract

The invention discloses a rolling guide shoe capable of changing a fulcrum and an elevator, and relates to the technical field of elevator guide shoes, the rolling guide shoe capable of changing the fulcrum comprises a guide shoe seat, a rotating shaft is arranged in the center of the guide shoe seat, a first roller and a second roller are rotationally connected to the two sides of the guide shoe seat, and the distance between the center of the first roller and the rotating shaft is larger than the distance between the center of the second roller and the rotating shaft; the distance between the center of the second roller and the rotating shaft is unequal; the two roller adjusting units are arranged in the guide shoe seat and used for adjusting the distance between the first roller and the rotating shaft and the distance between the second roller and the rotating shaft respectively; the pressure sensors are arranged on the first rolling wheel and the second rolling wheel and used for detecting pressure borne by the first rolling wheel and the second rolling wheel, and the controller controls the rolling wheel adjusting unit to act according to pressure detection results. The pressure of the roller is monitored in real time, the abnormal stress state of the roller is monitored in time, the position of the roller is adjusted in an auxiliary mode through the roller adjusting unit, and the elevator unbalance state can be adapted to a larger degree.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator guide shoes, and more particularly to a rolling guide shoe with a changeable fulcrum and an elevator. Background Art

[0002] Rolling guide shoes are a type of elevator guide shoe. When the elevator car or counterweight moves up and down, the rollers of the rolling guide shoes contact the elevator guide rails. The rollers roll on the guide rails, converting the movement of the car or counterweight into the rotational movement of the rollers. This rolling method greatly reduces friction, making the elevator run more stable and smooth, and can effectively reduce energy loss. In the existing rolling guide shoe structure, the rollers are symmetrically arranged on the guide shoe seat. When the overloaded elevator is in use or parked, the roller pressure on one side will be greater, resulting in increased deformation, and the rollers on both sides will be unbalanced, causing the roller vibration to intensify, affecting the stability of the elevator operation.

[0003] In the prior art, for example, the invention patent with application number CN202010784790.2 discloses a rolling guide shoe and backpack elevator with a changed fulcrum, which includes: a guide shoe seat; a first roller, mounted on one end face of the guide shoe seat; a second roller, mounted on the other end face of the guide shoe seat opposite to the first roller; a rotating shaft, disposed between the first roller and the second roller, and the distance between the center of the rotating shaft and the center of the second roller is shorter than the distance between the center of the rotating shaft and the center of the first roller, so that a first deformation amount generated after the first roller is subjected to force is converted into a first amplitude value at the rotating shaft through a physical principle and a second deformation amount generated after the second roller is subjected to force is converted into a second amplitude value at the rotating shaft through a physical principle, which is the same or close. However, in actual use, when the two rollers are subjected to uneven force and the degree of wear is severe, balance cannot be achieved through the above structure.

[0004] Therefore, it is necessary to provide a rolling guide shoe and an elevator with a changed fulcrum to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present invention provides a rolling guide shoe with a changeable fulcrum, comprising:

[0007] A guide shoe seat, a rotating shaft is arranged at the center of the guide shoe seat, a first roller and a second roller are rotatably connected at both sides of the guide shoe seat, and the distance between the center of the first roller and the rotating shaft is not equal to the distance between the center of the second roller and the rotating shaft;

[0008] Roller adjustment units, two roller adjustment units are arranged inside the guide shoe seat, and are used to adjust the distance between the first roller and the rotating shaft, and the distance between the second roller and the rotating shaft respectively;

[0009] The pressure sensor is arranged on the first roller and the second roller, and is used to detect the pressure exerted on the first roller and the second roller. The controller controls the action of the roller adjustment unit according to the pressure detection result.

[0010] Preferably, the rolling guide shoe for changing the fulcrum further includes a temperature sensor, which is arranged on the first roller and the second roller and is used to detect the temperature of the first roller and the second roller. When the detected temperature value exceeds a preset temperature value, the controller controls the heat dissipation component in the roller adjustment unit to operate.

[0011] Preferably, the roller adjustment unit comprises:

[0012] The housing is installed in the guide shoe seat, and a driving chamber is arranged at the center of the housing;

[0013] An adjusting member is slidably connected to one end of the driving chamber near the rotating shaft, the adjusting member passes through the housing and is connected to the roller rotating shaft, a slide groove for the roller rotating shaft to move is arranged on the guide shoe seat, the adjusting member is arranged with an opening at one end in the driving chamber, and a partition is arranged at the center of the adjusting member;

[0014] The regulating motor is installed in the driving room, the output end of the regulating motor is connected with a rocker arm, the rocker arm is connected with the partition through a connecting rod, and the regulating motor is electrically connected with the controller.

[0015] Preferably, the heat dissipation component comprises:

[0016] A cooling fan is connected to a side of the driving chamber away from the adjusting member, an air inlet corresponding to the cooling fan is arranged on the housing, a filter is connected to the air inlet, and the cooling fan is electrically connected to the controller;

[0017] A flow guide pipe is arranged in the regulating member, one end of the flow guide pipe is located inside the regulating member and communicates with the inside of the shell, and the other end of the flow guide pipe passes through the partition and communicates with the outside of the regulating member;

[0018] Strip-shaped heat dissipation holes, multiple strip-shaped heat dissipation holes are arranged on the top of the outer side of the adjustment member, and the airflow flows to the roller surface through the strip-shaped heat dissipation holes.

[0019] Preferably, the heat dissipation component further includes:

[0020] A blocking plate, which is connected between the housing and the driving chamber and has a conical sealing hole;

[0021] The electromagnetic sleeve is connected between the housing and the driving chamber through a bracket and is located on the side of the blocking plate close to the adjusting member; a magnetic slide bar is connected inside the electromagnetic sleeve through a spring, and the electromagnetic sleeve is electrically connected to the controller;

[0022] A sealing plug is connected to the end of the magnetic slide rod, the sealing plug is sealed in the sealing hole, and the sealing plug is provided with a conical surface adapted to the sealing hole; a shock absorbing plate is provided on the conical surface of the sealing plug through a spring, and elastic serrations are evenly arranged on the shock absorbing plate.

[0023] Preferably, a shaft mounting seat is provided at the end of the adjusting member, and the shaft mounting seat includes an inner sleeve and an outer sleeve arranged concentrically, a plurality of first support members are evenly connected between the inner sleeve and the outer sleeve, and a second support member is connected between the outer sleeve and the front and rear side walls of the shaft mounting seat; the roller shaft is rotatably connected to the inner sleeve.

[0024] Preferably, a plurality of arc-shaped parts are evenly connected to the outer wall of the outer sleeve, and rubber is filled between the outer sleeve and the rotating shaft mounting seat, and the rubber fits tightly with the arc-shaped parts.

[0025] Preferably, the first support member divides the outer sleeve into a plurality of sleeve cavities, and the sleeve cavities are connected to the outside of the adjusting member; and the front and rear side walls of the rotating shaft mounting seat are connected with heat sinks.

[0026] Preferably, the controller evaluates the balance of the first roller and the second roller according to the pressure detection result, specifically:

[0027] A pressure sensor is used to detect the pressure value on the first roller, and a first pressure curve of the first roller is obtained when the elevator travels along the running route; a pressure sensor is used to detect the pressure value on the second roller, and a second pressure curve of the second roller is obtained when the elevator travels along the running route; the first pressure change curve and the second pressure curve are integrated into the same coordinate system, and a difference between the pressure data of the first pressure change curve and the pressure data of the second pressure curve is obtained, and a data length exceeding the pressure data difference is determined as an over-limit length;

[0028] Determine whether the excess length is greater than a preset threshold: When the excess length is greater than the preset threshold, the controller determines that the roller pressure is unbalanced and controls the roller adjustment unit to move according to the data offset direction.

[0029] The invention provides an elevator, comprising the rolling guide shoe with a changeable fulcrum.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects:

[0031] The present invention provides a rolling guide shoe with a changed fulcrum, which adopts two asymmetrically arranged rollers of different sizes. When the forces on both sides of the elevator are unbalanced, the guide shoe seat rotates to change the fulcrum of the first roller and the second roller, so that the pressure and deformation of the two rollers are close to the same; a pressure sensor is used to monitor the pressure on the roller in real time, and the abnormal force state of the roller is detected in time. A roller adjustment unit is used to assist in adjusting the position of the roller, which can adapt to a greater degree of elevator imbalance and elevators of different specifications, reduce the vibration caused by the deformation of the roller surface, and improve the running stability of the elevator.

[0032] The present invention provides an elevator having the beneficial effects of the above-mentioned rolling guide shoe.

[0033] The rolling guide shoe and elevator with a changeable fulcrum described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 A schematic cross-sectional structure diagram of a rolling guide shoe with a changed fulcrum according to the present invention;

[0036] Figure 2 is a schematic cross-sectional structure diagram of the roller adjustment unit in the present invention;

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the adjusting member in the present invention;

[0038] Figure 4 For the present invention Figure 2 The local enlarged structure diagram at A in the middle;

[0039] Figure 5 is a schematic diagram of the cross-sectional structure of the sealing plug in the present invention;

[0040] Figure 6 It is a structural schematic diagram of the rotating shaft mounting seat of the present invention;

[0041] Figure 7 It is a schematic diagram of the installation end surface structure of the outer sleeve and the inner sleeve in the present invention.

[0042] In the figure: 1. guide shoe seat; 2. rotating shaft; 3. first roller; 4. second roller; 5. roller adjustment unit; 11. housing; 12. drive chamber; 13. adjustment member; 14. roller rotating shaft; 15. partition; 16. adjustment motor; 17. rocker arm; 18. connecting rod; 21. cooling fan; 22. filter screen; 23. guide pipe; 24. strip heat dissipation hole; 25. sealing plate; 26. sealing hole; 27. electromagnetic sleeve; 28. bracket; 29. ​​magnetic slide bar; 31. sealing plug; 32. shock-absorbing plate; 41. rotating shaft mounting seat; 42. inner sleeve; 43. outer sleeve; 44. first support member; 45. second support member; 46. arc member; 47. sleeve cavity; 48. heat sink. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0044] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0045] Embodiment 1:

[0046] like Figure 1 As shown, the present invention provides a rolling guide shoe and an elevator with a fulcrum change, comprising:

[0047] A guide shoe seat 1, a rotating shaft 2 is arranged at the center of the guide shoe seat 1, a first roller 3 and a second roller 4 are rotatably connected at both sides of the guide shoe seat 1, and the distance between the center of the first roller 3 and the rotating shaft 2 is not equal to the distance between the center of the second roller 4 and the rotating shaft 2;

[0048] Roller adjustment units 5, two roller adjustment units 5 are arranged inside the guide shoe seat 1, and are used to adjust the distance between the first roller 3 and the rotating shaft 2, and the distance between the second roller 4 and the rotating shaft 2 respectively;

[0049] The pressure sensor is disposed on the first roller 3 and the second roller 4 and is used to detect the pressure exerted on the first roller 3 and the second roller 4. The controller controls the action of the roller adjustment unit 5 according to the pressure detection result.

[0050] The working principle and beneficial effects of the above technical solution are:

[0051] The present invention provides a rolling guide shoe with a changeable fulcrum, which is connected to an elevator car by setting a rotating shaft 2, and two rollers are asymmetrically set on a guide shoe seat 1, and the two rollers have different sizes; when the forces on both sides of the elevator are unbalanced, the rotating shaft 2 rotates to change the fulcrum of the first roller 3 and the second roller 4, so that the pressures on the two rollers are close to the same, and the deformations are also close to the same; during the use of the elevator, the pressures on the first roller 3 and the second roller 4 are monitored in real time by a pressure sensor, and when the difference in pressure data between the two exceeds a preset range, it indicates that the first roller 3 and the second roller 4 cannot be adjusted by their own fulcrums to make the forces on the two uniform, and at this time, the roller adjustment unit 5 is started to adjust the distance between the first roller 3 and the rotating shaft 2, and the distance between the second roller 4 and the rotating shaft 2.

[0052] Through the above-mentioned structural design, two asymmetrically arranged rollers of different sizes are used. When the forces on both sides of the elevator are unbalanced, the guide shoe seat 1 rotates to change the fulcrum of the first roller 3 and the second roller 4, so that the pressure and deformation of the two rollers are close to the same; a pressure sensor is used to monitor the pressure on the roller in real time, and the abnormal force state of the roller is detected in time. The roller adjustment unit 5 is used to assist in adjusting the roller position, which can adapt to a greater degree of elevator imbalance and elevators of different specifications, reduce the vibration caused by roller surface deformation, and improve the stability of elevator operation.

[0053] Embodiment 2:

[0054] On the basis of the above-mentioned embodiment 1, the rolling guide shoe for changing the fulcrum also includes a temperature sensor, which is arranged on the first roller 3 and the second roller 4, and is used to detect the temperature of the first roller 3 and the second roller 4. When the detected temperature value exceeds the preset temperature value, the controller controls the heat dissipation component in the roller adjustment unit 5 to operate.

[0055] The working principle and beneficial effects of the above technical solution are:

[0056] When the first roller 3 and the second roller 4 are used for a long time, there is a certain friction between the roller and the track due to the pressure between the roller and the track, especially when the balance of the elevator is poor, which will cause the roller surface to heat up and accelerate wear. A temperature sensor is set on the first roller 3 and the second roller 4 to detect the temperature of the first roller 3 and the second roller 4. When the roller temperature is higher than a preset value, the heat dissipation component in the roller adjustment unit is automatically started to reduce the roller surface temperature, improve the safety of the rolling guide shoe operation, and extend the service life.

[0057] Embodiment 3:

[0058] like Figure 2-Figure 5 As shown, based on the above embodiment 2, the roller adjustment unit 5 includes:

[0059] The housing 11 is installed in the guide shoe seat 1, and a driving chamber 12 is arranged at the center of the housing 11;

[0060] The adjusting member 13 is slidably connected to one end of the driving chamber 12 close to the rotating shaft 2. The adjusting member 13 passes through the housing 11 and is connected to the roller rotating shaft 14. The guide shoe seat 1 is provided with a slide groove for the roller rotating shaft 14 to move. The adjusting member 13 is located at one end of the driving chamber 12 and is opened. A partition plate 15 is provided at the center of the adjusting member 13.

[0061] The regulating motor 16 is installed in the driving chamber 12. The output end of the regulating motor 16 is connected with a rocker arm 17. The rocker arm 17 is connected to the partition 15 through a connecting rod 18. The regulating motor 16 is electrically connected to the controller.

[0062] The working principle and beneficial effects of the above technical solution are:

[0063] When the roller adjustment unit is used, the adjustment motor 16 is started to rotate forward, driving the rocker arm 17 to rotate forward, and the rocker arm 17 pushes the partition 15 to move through the connecting rod 18, thereby pushing the adjustment member 13 to move out of the housing 11, so that the distance between the roller shaft 14 and the shaft 2 is reduced, that is, the adjustment of the roller close to the shaft 2 is achieved; on the contrary, the adjustment motor 16 is started to rotate reversely, driving the rocker arm 17 to rotate in the opposite direction, and the rocker arm 17 pulls the partition 15 to move through the connecting rod 18, thereby pulling the adjustment member 13 to move in the housing 11, so that the distance between the roller shaft 14 and the shaft 2 is increased, that is, the adjustment of the roller away from the shaft 2 is achieved. Through the above structural design, the operation of the adjustment motor 16 can quickly adjust the roller position, which is easy to control.

[0064] Embodiment 4:

[0065] like Figure 2-Figure 5 As shown, based on the above embodiment 3, the heat dissipation component includes:

[0066] A cooling fan 21, which is connected to a side of the driving chamber 12 away from the adjusting member 13. The housing 11 is provided with an air inlet corresponding to the cooling fan 21, and a filter 22 is connected to the air inlet. The cooling fan 21 is electrically connected to the controller;

[0067] A flow guiding pipeline 23, the flow guiding pipeline 23 is arranged in the adjusting member 13, one end of the flow guiding pipeline 23 is located inside the adjusting member 13 and communicates with the inside of the housing 11, and the other end passes through the partition 15 and communicates with the outside of the adjusting member 13;

[0068] Strip-shaped heat dissipation holes 24 , a plurality of strip-shaped heat dissipation holes 24 are disposed on the top of the outer side of the adjustment member 13 , and air flows through the strip-shaped heat dissipation holes 24 to the surface of the roller.

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] The roller adjustment unit 5 is integrated with a heat dissipation component. When the roller temperature is high, the controller starts the heat dissipation fan 21, and the airflow is sucked into the shell 11 from one side of the guide shoe seat 1. The mixed dust in the airflow is filtered out when the airflow passes through the filter 22; the airflow flows along the gap between the shell 11 and the drive chamber 12; it flows in from the guide pipe 23 on the side of the adjustment member 13, and under the guidance of the guide pipe 23, it flows into the other side of the partition 15, and flows out through the strip heat dissipation holes 24. The strip heat dissipation holes 24 correspond to the slide grooves at the top of the guide shoe seat 1. After passing through the slide grooves, the airflow flows to the roller surface, which has the effect of dissipating heat and cooling the roller surface; at the same time, it can blow off the particles on the roller surface, reducing the friction and loss with the track during the movement of the roller.

[0071] Embodiment 5:

[0072] like Figure 2-Figure 5 As shown, based on the above-mentioned embodiment 4, the heat dissipation component further includes:

[0073] A blocking plate 25, which is connected between the housing 11 and the driving chamber 12, and a conical sealing hole 26 is provided on the blocking plate 25;

[0074] The electromagnetic sleeve 27 is connected between the housing 11 and the driving chamber 12 through a bracket 28 and is located on a side of the blocking plate 25 close to the adjusting member 13; a magnetic slide bar 29 is connected to the electromagnetic sleeve 27 through a spring, and the electromagnetic sleeve 27 is electrically connected to the controller;

[0075] The sealing plug 31 is connected to the end of the magnetic slide bar 29, and the sealing plug 31 is sealed in the sealing hole 26. The sealing plug 31 is provided with a conical surface adapted to the sealing hole 26; a shock absorbing plate 32 is provided on the conical surface of the sealing plug 31 through a spring, and elastic serrations are evenly arranged on the shock absorbing plate 32.

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] When the roller temperature is higher than the preset value, the heat dissipation component in the roller adjustment unit is automatically started; the controller energizes the electromagnetic sleeve 27, attracts the magnetic slide bar 29 to move it away from the sealing plate 25, and the sealing plug 31 at the end of the magnetic slide bar 29 is separated from the sealing plate 25, so that a gap is generated between the sealing plug 31 and the sealing plate 25, even if the gap between the shell 11 and the drive chamber 12 is connected, the airflow can flow through the air inlet toward the strip heat dissipation hole 24; when the sealing plug 31 is separated from the sealing plate 25, the sealing plug 31 moves first, and after moving to the preset distance, the shock absorbing plate 32 is separated from the sealing hole 26, which can avoid the sealing plug 31 directly opening the sealing hole 26, The excessive airflow velocity generates noise, and at the same time, it can prevent the airflow from blowing and causing the roller adjustment unit 5 to shake. On the contrary, when the heat dissipation component stops working, the electromagnetic sleeve 27 loses its attraction to the magnetic slide rod 29, the sealing plug 31 is reset under the action of the spring and blocks the sealing hole 26, and the shock absorbing plate 32 first contacts the sealing hole 26 to reduce the direct impact on the sealing hole 26 and reduce the vibration of the roller adjustment unit 5.

[0078] Embodiment 6:

[0079] like Figure 6 , Figure 7 As shown, on the basis of the above-mentioned embodiment 4, a shaft mounting seat 41 is arranged at the end of the adjusting member 13, and the shaft mounting seat 41 includes an inner sleeve 42 and an outer sleeve 43 which are arranged concentrically, and a plurality of first support members 44 are evenly connected between the inner sleeve 42 and the outer sleeve 43, and a second support member 45 is connected between the outer sleeve 43 and the front and rear side walls of the shaft mounting seat 41; the roller shaft 14 is rotatably connected in the inner sleeve 42.

[0080] A plurality of arc-shaped pieces 46 are evenly connected to the outer wall of the outer sleeve 43 , and rubber is filled between the outer sleeve 43 and the shaft mounting seat 41 , and the rubber fits tightly with the arc-shaped pieces 46 .

[0081] The first support member 44 divides the outer sleeve 43 into a plurality of sleeve cavities 47 , and the sleeve cavities 47 are communicated with the outside of the adjusting member 13 ; the front and rear side walls of the rotating shaft mounting seat 41 are connected with heat sinks 48 .

[0082] The working principle and beneficial effects of the above technical solution are:

[0083] The roller shaft 14 is installed in the inner sleeve 42 of the shaft mounting seat 41. When the roller vibrates during the movement, the vibration is transmitted to the inner sleeve 42 through the roller shaft 14; then it is transmitted to the outer sleeve 43 through the first support member 44, and the vibration wave is transmitted to all directions of the outer sleeve 44, and the vibration wave is dispersed by the rigid structure; the outer sleeve 43 contacts the rubber in the shaft mounting seat 41, and the vibration wave is transmitted to the rubber, and the vibration wave is further dissipated through the flexible energy absorption effect; the second support member 45 provides support for the outer sleeve 43; and a plurality of arc-shaped members 46 are arranged on the outer sleeve 43, and the contact area between the arc-shaped members 46 and the rubber is larger. On the one hand, the outer sleeve 43 is firmly connected to the inside of the rubber, thereby improving the stability of the shaft mounting seat 41; on the other hand, the vibration wave is transmitted to the rubber through a larger contact surface, thereby improving the seismic resistance of the shaft mounting seat 41, reducing the influence of the roller vibration on the roller adjustment unit 5 and the guide shoe seat 1, and maintaining the stable operation of the rolling guide shoe.

[0084] The first support member 44 divides the outer sleeve 43 into a plurality of sleeve cavities 47, and the sleeve cavities 47 are evenly arranged; the outer sleeve 43 and the inner sleeve 42 are isolated to a certain extent, and when the roller shaft 14 is heated, part of the heat transferred to the inner sleeve 42 is transferred to the outer sleeve 43 through the first support member 44, and part of the heat is transferred to the surface of the inner sleeve 42 and dissipated outward through the sleeve cavity 47. The sleeve cavity 47 is connected to the adjustment member 13, and when the roller temperature rises and heat is dissipated, part of the airflow enters the sleeve cavity 47 and flows out through the top of the sleeve cavity 47, accelerating the heat dissipation on the roller shaft 14; the heat on the outer sleeve 43 is transferred to the heat sinks 48 on the front and rear sides of the shaft mounting seat 41 through the second support member 45, and dissipated from the front and rear sides of the shaft mounting seat 41. A transmission cavity for accommodating the shell 11 and the shaft mounting seat 41 is provided in the guide shoe seat 1, and gaps are provided between the front and rear sides and the top of the shaft mounting seat 41 and the inner wall of the transmission cavity to facilitate airflow and heat dissipation.

[0085] Through the above-mentioned structural design, the shaft mounting seat 41 is used to provide support for the roller shaft 14, and through the combined design of the inner and outer sleeves, the vibration wave on the roller shaft 14 is effectively reduced, the vibration of the roller adjustment unit 5 and the guide shoe seat 1 is reduced, the operating stability of the roller guide shoe is improved, and the noise during the operation of the elevator is reduced; a cavity structure is set on the shaft mounting seat 41 as an auxiliary heat dissipation method of the heat dissipation component, which can dissipate the heat of the roller shaft 14 more directly, thereby improving the overall heat dissipation performance of the roller and extending the service life of the roller shaft.

[0086] Embodiment 7:

[0087] On the basis of the above-mentioned embodiment 1, the controller evaluates the balance of the first roller 3 and the second roller 4 according to the pressure detection result, specifically:

[0088] A pressure sensor is used to detect the pressure value on the first roller 3, and a first pressure curve of the first roller 3 is obtained when the elevator travels along the running route; a pressure sensor is used to detect the pressure value on the second roller 4, and a second pressure curve of the second roller 4 is obtained when the elevator travels along the running route; the first pressure change curve and the second pressure curve are integrated into the same coordinate system, and the pressure data difference between the pressure data of the first pressure change curve and the pressure data of the second pressure curve is obtained, and the data length exceeding the pressure data difference is determined as the over-limit length;

[0089] Determine whether the excess length is greater than a preset threshold: When the excess length is greater than the preset threshold, the controller determines that the roller pressure is unbalanced, and controls the roller adjustment unit 5 to operate according to the data offset direction.

[0090] The working principle and beneficial effects of the above technical solution are:

[0091] A pressure sensor is used to monitor the pressure on the roller in real time; when the elevator is operating normally, the pressure values ​​on the first roller 3 and the second roller 4 are close to or equal, and the pressure data difference is within a preset range; when the rolling guide shoe is unbalanced, the pressure data on the first roller 3 and the second roller 4 differ greatly; the pressure data of the first roller 3 forms a first pressure curve, and the pressure data on the second roller 4 forms a second pressure curve. When the absolute value of the difference between the two pressure curves exceeds the preset pressure data difference, it indicates that the pressure data here is abnormal; therefore, there are multiple intervals with abnormal pressure data, and the sum of the lengths of the intervals with abnormal pressure data is the excess length; when the excess length is greater than the preset threshold, it indicates that the pressure data abnormal interval is too large, and the range of the unbalanced operation of the roller is too large. At this time, the controller evaluates the roller as a pressure imbalance state, and controls the roller adjustment unit 5 to operate according to the size of the pressure of the two rollers, so that the roller returns to a balanced state.

[0092] Through the above-mentioned structural design, the pressure data of the two rollers are collected and monitored in real time to form a digitized pressure curve, and an accurate evaluation is performed to promptly discover the failure of the roller fulcrum self-adjustment, provide a basis for the action nodes and action directions of the roller adjustment unit 5, facilitate the posture control of the rolling guide shoe, further improve the stability of the rolling guide shoe during use, and extend the service life of the rolling guide shoe.

[0093] Embodiment 8:

[0094] On the basis of the above-mentioned embodiment 1, an elevator comprises a rolling guide shoe with a changeable fulcrum according to any one of claims 1-9.

[0095] The working principle and beneficial effects of the above technical solution are:

[0096] The invention has the beneficial effects of the rolling guide shoe, adopts two asymmetrically arranged rollers of different sizes, and when the forces on both sides of the elevator are unbalanced, the guide shoe seat 1 rotates to change the fulcrum of the first roller 3 and the second roller 4, so that the pressure and deformation of the two rollers are close to the same; a pressure sensor is used to monitor the pressure on the roller in real time, and the abnormal force state of the roller is detected in time, and the roller adjustment unit 5 is used to assist in adjusting the roller position, which can adapt to a greater degree of elevator imbalance and elevators of different specifications, and reduce the vibration caused by the deformation of the roller surface.

[0097] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0098] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A rolling guide shoe with a variable fulcrum, characterized in that: include: A guide shoe seat (1), wherein a rotating shaft (2) is arranged at the center of the guide shoe seat (1), and a first roller (3) and a second roller (4) are rotatably connected at both sides of the guide shoe seat (1), and the distance between the center of the first roller (3) and the rotating shaft (2) is not equal to the distance between the center of the second roller (4) and the rotating shaft (2); Roller adjustment units (5), two roller adjustment units (5) are arranged inside the guide shoe seat (1), and are used to adjust the distance between the first roller (3) and the rotating shaft (2), and the distance between the second roller (4) and the rotating shaft (2), respectively; A pressure sensor is arranged on the first roller (3) and the second roller (4) and is used to detect the pressure exerted on the first roller (3) and the second roller (4). The controller controls the operation of the roller adjustment unit (5) according to the pressure detection result.

2. A rolling guide shoe with a variable fulcrum according to claim 1, characterized in that: It also includes a temperature sensor, which is arranged on the first roller (3) and the second roller (4) and is used to detect the temperature of the first roller (3) and the second roller (4). When the detected temperature value exceeds a preset temperature value, the controller controls the heat dissipation component in the roller adjustment unit (5) to operate.

3. A rolling guide shoe with a variable fulcrum according to claim 2, characterized in that: The roller adjustment unit (5) comprises: A housing (11), the housing (11) is installed in the guide shoe seat (1), and a driving chamber (12) is arranged at the center of the housing (11); An adjusting member (13), the adjusting member (13) is slidably connected to one end of the driving chamber (12) close to the rotating shaft (2), the adjusting member (13) passes through the housing (11) and is connected to the roller rotating shaft (14), a sliding groove for the roller rotating shaft (14) to move is provided on the guide shoe seat (1), one end of the adjusting member (13) is located in the driving chamber (12) and is open, and a partition plate (15) is provided at the center of the adjusting member (13); An adjusting motor (16) is installed in the driving chamber (12); an output end of the adjusting motor (16) is connected to a rocker arm (17); the rocker arm (17) is connected to the partition plate (15) through a connecting rod (18); and the adjusting motor (16) is electrically connected to a controller.

4. A rolling guide shoe with a variable fulcrum according to claim 3, characterized in that: The heat dissipation components include: A cooling fan (21), the cooling fan (21) is connected to a side of the driving chamber (12) away from the adjusting member (13), an air inlet corresponding to the cooling fan (21) is provided on the housing (11), and a filter (22) is connected to the air inlet, and the cooling fan (21) is electrically connected to the controller; A flow guiding pipeline (23), the flow guiding pipeline (23) is arranged in the adjusting member (13), one end of the flow guiding pipeline (23) is located inside the adjusting member (13) and communicates with the inside of the shell (11), and the other end passes through the partition (15) and communicates with the outside of the adjusting member (13); Strip-shaped heat dissipation holes (24), wherein a plurality of strip-shaped heat dissipation holes (24) are arranged on the top of the outer side of the adjustment member (13), and air flows to the surface of the roller via the strip-shaped heat dissipation holes (24).

5. A rolling guide shoe with a variable fulcrum according to claim 4, characterized in that: The heat dissipation assembly also includes: A blocking plate (25), the blocking plate (25) is connected between the housing (11) and the driving chamber (12), and a conical sealing hole (26) is provided on the blocking plate (25); An electromagnetic sleeve (27), the electromagnetic sleeve (27) is connected between the housing (11) and the drive chamber (12) through a bracket (28), and is located on a side of the blocking plate (25) close to the adjustment member (13); a magnetic slide bar (29) is connected inside the electromagnetic sleeve (27) through a spring, and the electromagnetic sleeve (27) is electrically connected to a controller; A sealing plug (31) is connected to the end of the magnetic slide bar (29), the sealing plug (31) is sealed in the sealing hole (26), and the sealing plug (31) is provided with a conical surface adapted to the sealing hole (26); a shock absorbing plate (32) is provided on the conical surface of the sealing plug (31) via a spring, and elastic serrations are evenly arranged on the shock absorbing plate (32).

6. A rolling guide shoe with a variable fulcrum according to claim 4, characterized in that: A rotating shaft mounting seat (41) is arranged at the end of the adjusting member (13), the rotating shaft mounting seat (41) comprises an inner shaft sleeve (42) and an outer shaft sleeve (43) which are arranged concentrically, a plurality of first supporting members (44) are evenly connected between the inner shaft sleeve (42) and the outer shaft sleeve (43), and a second supporting member (45) is connected between the outer shaft sleeve (43) and the front and rear side walls of the rotating shaft mounting seat (41); and the roller rotating shaft (14) is rotatably connected in the inner shaft sleeve (42).

7. A rolling guide shoe with a variable fulcrum according to claim 6, characterized in that: The outer wall of the outer sleeve (43) is evenly connected with a plurality of arc-shaped pieces (46), and the space between the outer sleeve (43) and the rotating shaft mounting seat (41) is filled with rubber, which fits tightly with the arc-shaped pieces (46).

8. A rolling guide shoe with a variable fulcrum according to claim 6, characterized in that: The first support member (44) divides the outer shaft sleeve (43) into a plurality of shaft sleeve cavities (47), and the shaft sleeve cavities (47) are connected to the outside of the adjusting member (13); and the front and rear side walls of the rotating shaft mounting seat (41) are connected with heat sinks (48).

9. A rolling guide shoe with a variable fulcrum according to claim 8, characterized in that: The controller evaluates the balance of the first roller (3) and the second roller (4) based on the pressure detection result, specifically: A pressure sensor is used to detect the pressure value on the first roller (3), and a first pressure curve of the first roller (3) is obtained when the elevator travels along the running route; a pressure sensor is used to detect the pressure value on the second roller (4), and a second pressure curve of the second roller (4) is obtained when the elevator travels along the running route; the first pressure change curve and the second pressure curve are integrated into the same coordinate system, and a difference between the pressure data of the first pressure change curve and the pressure data of the second pressure curve is obtained, and a data length exceeding the pressure data difference is determined as an over-limit length; Determine whether the overrun length is greater than a preset threshold: when the overrun length is greater than the preset threshold, the controller determines that the roller pressure is unbalanced, and controls the roller adjustment unit (5) to operate according to the data offset direction.

10. An elevator, characterized in that: A rolling guide shoe with a changeable fulcrum comprising any one of claims 1-9.

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