A traction machine with an encoder in front

Abstract

The present invention discloses a traction machine with an encoder in front. It includes a machine base, a hub rotatably connected to the machine base, a traction wheel fixed on the hub, an encoder, a shrapnel, a front end cover, a connecting plate and a mounting plate. The front end cover is fixedly connected to the hub. A hollow part is provided at the center of the machine base, and a bearing retainer ring is provided near the hollow part of the machine base. The front end cover is provided with a first hollow part corresponding to the hollow part and the bearing retainer ring. The encoder is located in the hollow part through the first hollow part, and the shrapnel is placed in the first hollow part. The encoder is fixedly connected through the shrapnel and the bearing retainer ring. The connecting plate is fixedly connected to the front end cover. The connecting plate is provided with a second hollow part. The connecting plate is fixedly connected to the mounting plate. The mounting plate passes through the second hollow part and is in transmission connection with the rotating shaft of the encoder. In the traction machine of the present invention, the encoder and the shrapnel can be directly taken out from the first hollow part by disassembling the mounting plate and the connecting plate, so as to replace the encoder, shorten the maintenance time and reduce the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of traction machines, and more particularly to a traction machine with a front-mounted encoder. Background Art

[0002] Currently, referring to Figure 1 , the encoders of most traction machines are safely installed behind the traction machine, that is, the encoder 3 and the traction wheel 2 of the traction machine are not on the same side, and the encoder 3 is close to the wall and other obstacles. For a traction machine with such a structure, when the encoder 3 fails, it is necessary to move the traction machine, or the counterweight bottoms out, or drill holes in the wall to replace the encoder 3, resulting in high maintenance costs and long time. Summary of the Invention

[0003] The object of the present invention is to provide a traction machine with a front-mounted encoder that is easy to replace the encoder.

[0004] The object of the present invention is achieved as follows.

[0005] The traction machine with a front-mounted encoder includes a machine base, a hub rotatably connected to the machine base, a traction wheel fixed on the hub, an encoder, a spring piece, a front end cover, a connecting plate and a mounting plate. The front end cover is fixedly connected to the hub. The machine base is provided with a hollow part at the center, and a bearing retaining ring is provided near the hollow part of the machine base. The front end cover is provided with a first hollow part corresponding to the hollow part and the bearing retaining ring. The encoder is located in the hollow part through the first hollow part. The spring piece is placed in the first hollow part. The encoder is fixedly connected to the bearing retaining ring through the spring piece. The connecting plate is fixedly connected to the front end cover. The connecting plate is provided with a second hollow part. The connecting plate is fixedly connected to the mounting plate. The mounting plate passes through the second hollow part and is in transmission connection with the rotating shaft of the encoder.

[0006] The above technical solution can be further improved as follows.

[0007] In a more specific solution, the front end cover is provided with a through hole communicating the outer and inner end faces, and the diameter of the through hole is larger than the outer diameter of the bearing retaining ring. The through hole constitutes the first hollow part.

[0008] In a more specific solution, at least one step is provided on the inner side wall of the through hole near the inner end, and the outer end of the bearing retaining ring is placed in the through hole.

[0009] In a more specific solution, the outer end face of the front end cover is provided with a first clamping position, and the outer circumference of the connecting plate is in interference fit with the first clamping position.

[0010] In a more specific solution, the outer end face of the bearing retaining ring is provided with a first screw hole, and both ends of the spring piece are respectively threadedly connected to the corresponding first screw holes through first screws.

[0011] In a more specific solution, the connecting plate is provided with a relief hole communicating with the outer and inner end faces. The diameter of the relief hole is larger than the maximum length of the mounting plate. Two flanges are provided on the side wall of the relief hole. The space between the relief hole and the flanges forms the second hollow part. Second screw holes are provided on the flanges. The two ends of the mounting plate are respectively threadedly connected to the second screw holes through second screws.

[0012] In a more specific solution, a clearance hole is provided on the connecting plate corresponding to the position of the first screw. The nut of the first screw is placed in the clearance hole.

[0013] In a more specific solution, the inner end face of the connecting plate is concave with a groove. The groove communicates with the relief hole. The elastic piece is placed in the groove.

[0014] In a more specific solution, the mounting plate is waist-shaped. The inner end face of the mounting plate is provided with a connecting shaft that is drivingly connected to the rotating shaft of the encoder.

[0015] In a more specific solution, the front end cover is further fixedly connected with a cover plate. A notch is provided on the cover plate corresponding to the mounting plate. The mounting plate passes through the notch.

[0016] The beneficial effects of the present invention are as follows.

[0017] There is at least 18.5 mm of space on the end face of the traction wheel. In the traction machine of the present invention, the encoder and the elastic piece can be directly taken out from the first hollow part by disassembling the mounting plate and the connecting plate, so as to replace the encoder, shortening the maintenance time and reducing the maintenance cost. The structural design of the front end cover, the mounting plate, the connecting plate, the elastic piece and the cover plate reduces the volume after assembly and also facilitates the installation and disassembly of the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an existing traction machine.

[0019] Figure 2 It is an exploded structural diagram of the traction machine in the embodiment.

[0020] Figure 3 For Figure 2 The enlarged view of part A in

[0021] Figure 4 It is a partial sectional structural diagram of the traction machine in the embodiment.

[0022] Figure 5 It is a front structural diagram of the traction machine in the embodiment (the cover plate is omitted). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention will be further described below with reference to the drawings and embodiments.

[0024] Embodiment 1, see Figure 2-5As shown in the figure, a traction machine with an encoder in front includes a machine base 10, a hub 1 rotatably connected to the machine base 10, a traction wheel 2 fixed on the hub 1, an encoder 3, a spring piece 4, a front end cover 5, a connecting plate 6, a mounting plate 7 and a cover plate 8. A hollow part 11 in the shape of a circular hole is provided at the center of the machine base 10. A bearing retainer ring 9 is provided on the machine base 10 near the hollow part 11. The outer end surface of the part where the hollow part 11 is located is flush with the outer end surface of the bearing retainer ring 9. Four first screw holes 91 are provided on the outer end surface of the bearing retainer ring 9. There are two first screw holes 91 on the left side of the outer end surface of the bearing retainer ring 9, and two first screw holes 91 on the right side of the outer end surface of the bearing retainer ring 9. The first screw holes 91 on the left and right sides of the bearing retainer ring 9 are symmetrically arranged left and right. Preferably, the bearing retainer ring 9 is sleeved and fixed around the hollow part 11, and the bearing retainer ring 9 and the hollow part 11 are coaxially arranged.

[0025] A through hole 51 communicating the outer and inner end surfaces is provided on the front end cover 5. The diameter of the through hole 51 is larger than the outer diameter of the bearing retainer ring 9. A first clamping position 52 is provided on the outer end surface of the front end cover 5. The through hole 51 forms a first hollow part. The front end cover 5 is fixed on the outer side of the hub 1 through a third screw 53. Among them, a step is provided near the inner end of the inner side wall of the through hole 51. The outer end of the bearing retainer ring 9 is placed in the through hole 51, and the step is matched with a bearing or an oil seal to make the outer end surface of the bearing retainer ring 9 flush with the outer end surface of the front end cover 5. Preferably, the through hole 51 and the axis of the hollow part 11 coincide. Two symmetric protrusions 54 extend outward from the outer end surface of the front end cover 5, and the space between the two symmetric protrusions 54 and the outer end surface of the front end cover 5 forms the first clamping position 52.

[0026] The outer ring of the encoder 3 and the central part of the spring piece 4 are connected and fixed by screws. The encoder 3 is placed in the hollow part 11 through the through hole 51. Both ends of the spring piece 4 are respectively threadedly connected to the corresponding first screw holes 91 through two first screws 41. A step is provided near the outer end of the hollow part 11 of the machine base 10 to facilitate the installation and disassembly of the encoder 3 and the hollow part 11 of the machine base 10.

[0027] Avoidance holes 61 are provided on the connecting plate 6 corresponding to the positions of the first screws 41. A groove 62 is recessed on the inner end surface of the connecting plate 6. The connecting plate 6 is provided with a relief hole 63 communicating the outer and inner end surfaces. Two centrally symmetric flanges 64 are provided on the side wall of the relief hole 63. The space between the relief hole 63 and the flanges 64 forms a second hollow part. Second screw holes 65 are provided on the flanges 64. The outer periphery of the connecting plate 6 is in a stop fit with the first clamping position 52. The connecting plate 6 and the front end cover 5 are connected and fixed through a fourth screw 66. The relief hole 63, the groove 62 and the through hole 51 are communicated, and the spring piece 4 is placed in the groove 62. The nuts of the first screws 41 are placed in the avoidance holes 61.

[0028] The mounting plate 7 is oval in shape, and a connecting shaft 71 is provided on the inner end surface of the mounting plate 7, and the connecting shaft 71 is drivingly connected to the rotating shaft 31 of the encoder 3. The diameter of the clearance hole 63 is larger than the maximum length of the mounting plate 7 (i.e., the length between the left and right ends of the mounting plate 7), and the ends of the mounting plate 7 are respectively threadedly connected to the second screw holes 65 through second screws 72.

[0029] The cover plate 8 is fixed to the symmetrical protrusions 54 of the front cover 5 by the fifth screw 82 . A notch 81 is provided on the cover plate 8 corresponding to the mounting plate 7 . The mounting plate 7 passes through the notch 81 . The cover plate 8 shields the connecting plate 6 and the front cover 5 .

[0030] In the present invention, the hollow portion 11 of the base 10, the bearing pressure ring 9 and the front end cover 5 are all located in the hollow inner cavity of the traction wheel 2. There must be a space with a width of at least 18.5 mm between the outer end surface of the traction wheel 2 and the obstacle (such as a wall) so that the encoder 3 can be replaced.

[0031] During the replacement process of the encoder 3, loosen the fifth screw 82, remove the cover plate 8, loosen the first screw 41, the second screw 72 and the fourth screw 66, and then rotate the mounting plate 7 ( Figure 4 The dotted line indicates the position of the mounting plate 7 after rotation), so that the two ends of the mounting plate 7 and the flange 64 are offset, so as to remove the connecting plate 6, and then take out the mounting plate 7, the spring piece 4 and the encoder 3 together, and then remove the mounting plate 7 and the spring piece 4 to replace the encoder 3.

[0032] During the installation process of the encoder 3, the outer ring of the encoder 3 and the spring piece 4 are assembled first, and the encoder 3 is placed in the hollow part 11 of the machine base 10. The first screw 41 connects the spring piece 4 and the first screw hole 91 of the bearing pressure ring 9, but the first screw 41 is not tightened. Then the mounting plate 7 and the rotating shaft of the encoder 3 are connected and fixed. The connecting plate 6 is fixed in the first clamping position 52 by the fourth screw 66, so that the air avoidance hole 61 is aligned with the first screw 41, and the mounting plate 7 is rotated to pass through the air avoidance hole 61 so that the end of the mounting plate 7 and the flange 64 are abutted against each other. The mounting plate 7 and the flange 64 are locked by the second screw 72, and then the first screw 41 is tightened. Finally, the notch 81 of the cover plate 8 is aligned with the mounting plate 7, and the cover plate 8 and the front end cover 5 are locked by the fifth screw 82.

Claims

1. A traction machine with an encoder in front, comprising a machine base, a hub rotatably connected to the machine base, a traction wheel fixed on the hub, an encoder, a shrapnel, a front end cover, a connecting plate and a mounting plate. The front end cover and the hub are fixedly connected. There is a hollow part in the center of the machine base. It is characterized in that a bearing retainer ring is provided near the hollow part of the machine base. The front end cover is provided with a first hollow part corresponding to the hollow part and the bearing retainer ring. The encoder is located in the hollow part through the first hollow part. The shrapnel is placed in the first hollow part. The encoder is fixedly connected through the shrapnel and the bearing retainer ring. The connecting plate and the front end cover are fixedly connected. The connecting plate is provided with a second hollow part. The connecting plate and the mounting plate are fixedly connected. The mounting plate passes through the second hollow part and is in transmission connection with the rotating shaft of the encoder; a first screw hole is provided on the outer end face of the bearing retainer ring. The two ends of the shrapnel are respectively threadedly connected to the corresponding first screw holes through first screws; the connecting plate is provided with a relief hole communicating with the outer and inner end faces. The diameter of the relief hole is larger than the maximum length of the mounting plate. There are two flanges on the side wall of the relief hole. The space between the relief hole and the flanges forms the second hollow part. Second screw holes are provided on the flanges. The two ends of the mounting plate are respectively threadedly connected to the second screw holes through second screws.

2. The traction machine with an encoder in front according to claim 1, It is characterized in that the front end cover is provided with a through hole communicating with the outer and inner end faces. The diameter of the through hole is larger than the outer diameter of the bearing retainer ring. The through hole forms the first hollow part.

3. The traction machine with an encoder in front according to claim 2, It is characterized in that at least one step is provided near the inner end of the inner side wall of the through hole. The outer end of the bearing retainer ring is placed in the through hole.

4. The traction machine with an encoder in front according to claim 1, It is characterized in that a first clamping position is provided on the outer end face of the front end cover. The outer circumference of the connecting plate is in interference fit with the first clamping position.

5. The traction machine with an encoder in front according to claim 1, It is characterized in that a clearance hole is provided on the connecting plate corresponding to the position of the first screw. The nut of the first screw is placed in the clearance hole.

6. The traction machine with an encoder in front according to claim 1, It is characterized in that a groove is recessed on the inner end face of the connecting plate. The groove communicates with the relief hole. The shrapnel is placed in the groove.

7. The traction machine with an encoder in front according to any one of claims 1-6, It is characterized in that the mounting plate is waist-shaped. A connecting shaft in transmission connection with the rotating shaft of the encoder is provided on the inner end face of the mounting plate.

8. The traction machine with an encoder in front according to claim 7, It is characterized in that a cover plate is further fixedly connected to the front end cover. A notch is provided on the cover plate corresponding to the mounting plate. The mounting plate passes through the notch.

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