An elevator hoisting machine

Abstract

The utility model provides a kind of elevator hoisting machine, it is guaranteed the concentricity of two groups of bearings while guaranteeing the strength of bed, ensure the service life of hoisting machine.It includes: bed, it includes outer ring circumference, front end ring face, middle ring circumference, inner end ring face, variable-diameter sleeve and base, the radial outer circle of front end ring face is connected in the front end of outer ring circumference, the radial inner circle of front end ring face is connected in the front end of middle ring circumference, the radial outer circle of inner end ring face is connected in the rear end of middle ring circumference, the rear end of inner end ring face is connected the rear end of variable-diameter sleeve, variable-diameter sleeve includes rear end large-diameter end, middle part guide variable-diameter part, front end small-diameter end, the rear end face of inner end ring face is set to front convex relative to the rear end face of outer ring circumference, the cavity formed by outer ring circumference, front end ring face, middle ring circumference includes stator positioning ring cavity, magnet steel runner placement cavity;Rear end cover;Hoisting wheel;Encoder;Motor stator;Motor rotor;And shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of traction machine structure, specifically an elevator traction machine. Background Technology

[0002] Existing traction machines have a front cover fixed at the position of the shaft corresponding to the machine base. In actual use, a shaft positioning sleeve is set in the middle of the machine base, and the shaft is positioned in the shaft positioning sleeve by bearings. The front end of the machine base has a hollow structure in the thickness direction, which makes the entire machine base prone to deformation. Therefore, a relatively thick front cover is set. The front cover needs to be equipped with bearing mounting holes, which means that two sets of bearings correspond to two different workpieces. Since the machine base and the front cover need to be assembled and positioned after being processed separately, concentricity deviation is prone to occur during assembly or processing. This makes it difficult to ensure the horizontality of the shaft, which in turn leads to deflection and generates incorrect stress directions that do not conform to the settings, thus failing to guarantee the normal working life of the traction machine. Therefore, there is an urgent need to develop a traction machine that can ensure the strength of the machine base while ensuring the concentricity of the two sets of bearings. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides an elevator traction machine that ensures the strength of the machine base and the concentricity of the two sets of bearings, thereby ensuring the service life of the traction machine.

[0004] An elevator traction machine, characterized in that it comprises: A base includes an outer ring, a front end ring, a middle ring, an inner end ring, a variable diameter sleeve, and a base. The front end of the outer ring is connected to the radial outer circle of the front end ring, the front end of the middle ring is connected to the radial inner circle of the front end ring, the rear end of the middle ring is connected to the radial outer circle of the inner end ring, and the radial inner circle of the inner end ring is connected to the rear end of the variable diameter sleeve. The variable diameter sleeve includes a rear large diameter end, a middle guide variable diameter portion, and a front small diameter end. The rear end face of the inner end ring is convex relative to the rear end face of the outer ring. The cavity formed by the outer ring, the front end ring, and the middle ring includes a stator positioning ring cavity and a magnet wheel placement cavity. Rear end cover; Traction wheel; Encoder; Motor stator; The motor rotor includes a magnet wheel section and a turntable section; And the pivot; The motor stator is fixedly installed in the stator positioning ring cavity. A magnetic steel wheel is provided on the outer circumference of the motor mounting cavity. A rear-protruding turntable is fixedly connected to the rear outer ring of the magnetic steel wheel. The turntable is fixedly sleeved on the corresponding axial position of the rotating shaft. The rear large-diameter end of the variable-diameter sleeve is used to position and place the first bearing. The front small-diameter end of the variable-diameter sleeve is used to place the second bearing. Both ends of the rotating shaft protrude outwards after passing through the inner ring holes of the first bearing and the second bearing, respectively. A traction wheel is fixedly sleeved on the front protruding end of the rotating shaft. The motor rotor is sequentially fixedly sleeved on the rear protruding end of the rotating shaft. An encoder is fixedly installed on the rear protruding end face of the rotating shaft.

[0005] Its further features are: The bottom of the outer ring is provided with a base, and notch areas are opened on both sides of the outer ring corresponding to the position of the magnet wheel. The brakes are fixed in the corresponding notch areas, and the output end of the brakes is used to brake the magnet wheel. The rear end cover is provided with a clearance hole corresponding to the outward protrusion of the rotating shaft, and the rear end cover is fixed to the rear end ring edge of the outer ring by bolts. It also includes an encoder bracket, the sleeve end of which is fitted into the area of ​​the protruding encoder. The mounting circumference of the encoder bracket is fixed to the corresponding positioning hole of the rear end cover by bolts, which ensures reliable assembly of the encoder and the shaft. The front end of the base has several weight-reducing fan-shaped holes, which ensure the strength of the entire base while keeping its weight relatively light.

[0006] After adopting the above technical solution, the machine base is equipped with a variable diameter sleeve in the radial center area. The large diameter end of the variable diameter sleeve is used to position and place the first bearing, and the small diameter end of the front end of the variable diameter sleeve is used to place the second bearing. Since the variable diameter sleeve and the machine base are integrally formed, there is no need to consider assembly errors and other factors. This allows the shaft to be reliably concentrically positioned with only the variable diameter sleeve of a single machine base. Furthermore, the cavity formed by the outer circumference, front end circumference, and middle circumference of the machine base includes a stator positioning ring cavity and a magnet wheel placement cavity, which reliably installs the motor stator and motor rotor wheel. This ensures the strength of the machine base and the concentricity of the two sets of bearings, thus ensuring the service life of the traction machine. Attached Figure Description

[0007] Figure 1 This is the front view of the present invention; Figure 2 This is a perspective view of the present utility model; Figure 3 for Figure 1 A schematic diagram of the AA cross-section structure; Figure 4 The three-dimensional structure of the base of this utility model Figure 1 ; Figure 5 The three-dimensional structure of the base of this utility model Figure 2 ; The names corresponding to the serial numbers in the diagram are as follows: 10. Base, 101. Cavity, 11. Outer circumference, 12. Front end annular surface, 121. Weight reduction fan-shaped hole, 13. Middle circumference, 14. Inner end annular surface, 15. Variable diameter sleeve, 151. Rear end large diameter end, 152. Middle guide variable diameter section, 153. Front end small diameter end, 16. Base, 17. Notch area, 18. Reinforcing rib, 20. Rear end cover, 30. Traction wheel, 40. Encoder, 50. Motor stator, 60. Motor rotor, 61. Magnet wheel section, 62. Turntable section, 70. Encoder bracket, 71. Sleeve end, 72. Mounting circumference, 80. Brake, 90. Rotating shaft, 100. First bearing, 110. Second bearing, 120. Traction wheel end cover. Detailed Implementation

[0008] An elevator traction machine, see Figures 1-5 It includes a base 10, a rear end cover 20, a traction sheave 30, an encoder 40, a motor stator 50, a motor rotor 60, a brake 80, and a rotating shaft 90; The base 10 includes an outer ring 11, a front end ring 12, a middle ring 13, an inner end ring 14, a variable diameter sleeve 15, and a base 16. The front end of the outer ring 11 is connected to the radial outer circle of the front end ring 12, the front end of the middle ring 13 is connected to the radial inner circle of the front end ring 12, the rear end of the middle ring 13 is connected to the radial outer circle of the inner end ring 14, and the radial inner circle of the inner end ring 14 is connected to the rear end of the variable diameter sleeve 15. The variable diameter sleeve 15 includes a rear large diameter end 151, a middle guide variable diameter part 152, and a front small diameter end 153. The rear end face of the inner end ring 14 is convex relative to the rear end face of the outer ring 11. The cavity 101 formed by the outer ring 11, the front end ring 12, and the middle ring 13 radially from the inside out are the stator positioning ring cavity and the magnet wheel placement cavity, respectively. The motor rotor 60 includes a magnet part 61 and a turntable part 62; The stator 50 is fixedly installed in the stator positioning ring cavity. The magnet placement cavity is provided with a magnet wheel part 61. The rear outer ring of the magnet wheel part 61 is fixedly connected to a rear protruding turntable part 62. The turntable part 62 is fixedly sleeved at the corresponding axial position of the rotating shaft 90. The rear large diameter end 151 of the variable diameter sleeve 15 is used to position and place the first bearing 100. The front small diameter end 153 of the variable diameter sleeve 15 is used to place the second bearing 110. The two ends of the rotating shaft 90 protrude outward after passing through the inner ring holes of the first bearing 100 and the second bearing 110, respectively. The front protruding end of the rotating shaft 90 is fixedly sleeved with a traction wheel 30 and then fixedly pressed and limited by the traction wheel end cover 120. The rear protruding end face of the rotating shaft 90 is fixedly installed with an encoder 40.

[0009] In specific implementation, a base 16 is provided at the bottom of the outer ring 11, and notch areas 17 are provided on both sides of the outer ring 11 corresponding to the position of the magnet wheel part 61. Brakes 80 are fixedly installed in the corresponding notch areas 17, and the output end of the brakes 80 is used to brake the magnet wheel part 61. The rear end cover 20 is provided with a clearance hole corresponding to the outward protrusion of the rotating shaft 90, and the rear end cover 20 is fixed to the rear end ring edge of the outer ring 11 by bolts.

[0010] In specific implementation, it also includes an encoder bracket 70. The sleeve end 71 of the encoder bracket 70 is fitted into the area of ​​the protruding encoder 40. The mounting ring 72 of the encoder bracket 70 is fixed to the corresponding positioning hole of the rear end cover 20 by bolts, which ensures that the encoder 40 and the rotating shaft 90 are reliably assembled.

[0011] In practice, the front end ring surface 12 of the base 10 is provided with several weight-reducing fan-shaped holes 121, which ensures the strength of the entire base 10 while ensuring its relatively light weight.

[0012] In practice, several reinforcing ribs 18 are provided between the inner wall of the middle ring 13 and the outer circumference of the variable diameter sleeve 15 to ensure the strength of the entire machine base.

[0013] The principle is as follows: The base has a variable diameter sleeve in the radial center area. The large diameter end of the variable diameter sleeve is used to position and place the first bearing, and the small diameter end of the variable diameter sleeve is used to place the second bearing. Since the variable diameter sleeve and the base are integrally formed, there is no need to consider assembly errors and other factors. This allows the shaft to be reliably concentrically positioned with only the variable diameter sleeve of the base. The cavity formed by the outer circumference, front end circumference, and middle circumference of the base includes a stator positioning cavity and a magnet wheel placement cavity, which reliably installs the motor stator and motor rotor. This ensures the strength of the base and the concentricity of the two sets of bearings, thus ensuring the service life of the traction machine.

[0014] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0015] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An elevator traction machine, characterized in that, It includes: A base includes an outer ring, a front end ring, a middle ring, an inner end ring, a variable diameter sleeve, and a base. The front end of the outer ring is connected to the radial outer circle of the front end ring, the front end of the middle ring is connected to the radial inner circle of the front end ring, the rear end of the middle ring is connected to the radial outer circle of the inner end ring, and the radial inner circle of the inner end ring is connected to the rear end of the variable diameter sleeve. The variable diameter sleeve includes a rear large diameter end, a middle guide variable diameter portion, and a front small diameter end. The rear end face of the inner end ring is convex relative to the rear end face of the outer ring. The cavity formed by the outer ring, the front end ring, and the middle ring includes a stator positioning ring cavity and a magnet wheel placement cavity. Rear end cover; Traction wheel; Encoder; Motor stator; The motor rotor includes a magnet wheel section and a turntable section; And the pivot; The motor stator is fixedly installed in the stator positioning ring cavity. A magnetic steel wheel is provided on the outer circumference of the motor mounting cavity. A rear-protruding turntable is fixedly connected to the rear outer ring of the magnetic steel wheel. The turntable is fixedly sleeved on the corresponding axial position of the rotating shaft. The rear large-diameter end of the variable-diameter sleeve is used to position and place the first bearing. The front small-diameter end of the variable-diameter sleeve is used to place the second bearing. Both ends of the rotating shaft protrude outwards after passing through the inner ring holes of the first bearing and the second bearing, respectively. A traction wheel is fixedly sleeved on the front protruding end of the rotating shaft. The motor rotor is sequentially fixedly sleeved on the rear protruding end of the rotating shaft. An encoder is fixedly installed on the rear protruding end face of the rotating shaft.

2. The elevator traction machine according to claim 1, characterized in that: A base is provided at the bottom of the outer ring, and notches are provided on both sides of the outer ring corresponding to the positions of the magnet wheel. Brakes are fixedly installed in the corresponding notches, and the output end of the brakes is used to brake the magnet wheel.

3. The elevator traction machine according to claim 1, characterized in that: The rear end cover is provided with a clearance hole corresponding to the outward protrusion of the rotating shaft, and the rear end cover is fixed to the rear end ring edge of the outer ring by bolts.

4. An elevator traction machine according to claim 3, characterized in that: It also includes an encoder bracket, the sleeve end of which is fitted into the area of ​​the protruding encoder, and the mounting ring of the encoder bracket is fixed to the corresponding positioning hole of the rear end cover by bolts.

5. An elevator traction machine according to claim 1, characterized in that: The front end of the base has several weight-reducing fan-shaped holes.

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