Speed reducer suitable for fan transmission shaft

Abstract

A speed reduction device suitable for a fan transmission shaft comprises a displacement part, a bottom supporting part, a horizontal long plate, an inclined part and a speed reduction part. The displacement part comprises a base, universal wheels and a first hydraulic cylinder; universal wheels are arranged at four corners of the lower end surface of the base; first hydraulic cylinders are arranged at the four corners of the side wall of the base, piston rods of the first hydraulic cylinders face downwards, and supporting plates are arranged at the ends of the piston rods of the first hydraulic cylinders. A sliding groove is formed in the upper end face of the base, a sliding strip is arranged on the bottom end face of the horizontal long plate, and the sliding strip of the horizontal long plate is arranged in the sliding groove in the upper end face of the base in a sliding mode. The bottom supporting part is arranged on the side wall of the base and connected with the bottom end face of the horizontal long plate. The inclined part is arranged on the top end face of the horizontal long plate, and the speed reduction part is arranged on the inclined part. According to the utility model, the speed reduction efficiency of the fan transmission shaft is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to a deceleration device, in particular to a device capable of decelerating an outer transmission shaft of a fan, belonging to the technical field of deceleration equipment for a fan stop transmission shaft. Background Art

[0002] A fan is a large-scale equipment used to supply air. It relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. The motor provides power to the impeller through the drive shaft, which in turn rotates the impeller to generate airflow. In the actual production process, when the fan is in dynamic balance, the drive shaft of the fan needs to be decelerated. After the fan is powered off, the drive shaft will still rotate for a long time. Only when the drive shaft stops can subsequent operations be performed. This affects production efficiency. At present, the deceleration of the fan drive shaft is generally completed by natural stopping, or the staff holds a long pole and supports the drive shaft through the lever theorem to brake it. This not only poses a safety hazard, but also has high labor intensity. Therefore, a deceleration device is needed to assist the staff in efficiently decelerating the fan drive shaft after shutdown. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a deceleration device suitable for a fan drive shaft, which can not only reduce the labor intensity of the staff, but also improve the deceleration efficiency of the fan drive shaft after shutdown.

[0004] The problem described in the utility model is solved by the following technical solutions:

[0005] A deceleration device suitable for a fan drive shaft comprises a displacement part, a bottom support part, a horizontal long plate, an inclined part and a deceleration part; the displacement part comprises a base, a universal wheel and a first hydraulic cylinder; universal wheels are arranged at the four corners of the lower end surface of the base; a first hydraulic cylinder is arranged at the four corners of the side wall of the base, and the piston rod of the first hydraulic cylinder faces downward, and a support plate is arranged at the end of the piston rod of the first hydraulic cylinder; a slide groove is arranged on the upper end surface of the base, a slide bar is arranged on the bottom end surface of the horizontal long plate, and the slide bar of the horizontal long plate is slidably arranged in the slide groove on the upper end surface of the base; the bottom support part is arranged on the side wall of the base, and is connected to the bottom end surface of the horizontal long plate; the inclined part is arranged on the top end surface of the horizontal long plate, and the deceleration part is arranged on the inclined part.

[0006] The above-mentioned speed reduction device suitable for the fan drive shaft, the bottom support part includes a sleeve and a sliding rod; the first end of the bottom end surface of the horizontal long plate is provided with a hinge seat, and the side wall of the base is provided with a hinge seat; the sliding rod is inserted into the hole at the end of the sleeve; one end of the sliding rod and the hinge seat on the bottom end surface of the horizontal long plate form a hinged matching connection structure, and one end of the sleeve and the hinge seat on the side wall of the base form a hinged matching connection structure; the side wall of the sliding rod is provided with a plurality of insertion holes along its length direction, and the side wall of the sleeve is provided with a positioning hole, and the pin is simultaneously passed through the positioning hole of the sleeve and the corresponding insertion hole on the sliding rod.

[0007] The above-mentioned speed reduction device suitable for the fan drive shaft, the inclined part includes a flip rod and a second hydraulic cylinder; a hinge seat is provided on the upper end surface of the horizontal long plate near the first end, and a hinge seat is provided in the central part of the horizontal long plate; one end of the flip rod and the hinge seat on the upper end surface of the horizontal long plate near the first end form an articulated matching connection structure, and the articulated seat on the center of the horizontal long plate and the housing of the second hydraulic cylinder form an articulated matching connection structure; the end of the flip rod away from the horizontal long plate forms an articulated matching connection structure with the end of the piston rod of the second hydraulic cylinder.

[0008] The above-mentioned speed reduction device is suitable for the fan drive shaft, and the speed reduction part includes a slider and an arc-shaped brake shoe; the slider is provided with a square hole, and the flip rod passes through the square hole of the slider; the flip rod is evenly provided with a plurality of limit holes along its length direction, the slider is provided with a positioning hole, and the pin is simultaneously passed through the positioning hole of the slider and the limit hole corresponding to the position of the flip rod; two clamping plates are provided on the arc-shaped outer wall of the arc-shaped brake shoe, and the two clamping plates are respectively axially connected on both sides of the slider.

[0009] The utility model drives the remaining parts to move to the side of the fan drive shaft to be decelerated through the displacement part; effectively provides further support for the horizontal long board through the bottom support part; and ensures that the deceleration part can contact the drive shaft at a suitable angle and perform deceleration processing through the inclined part. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0011] The list of reference numerals in the figure is: 1. base, 2. first hydraulic cylinder, 3. sleeve, 4. slide bar, 5. flip bar, 6. second hydraulic cylinder, 7. slide block, 8. arc brake shoe, 9. horizontal long plate. DETAILED DESCRIPTION

[0012] See also Figure 1The utility model includes a displacement part, a bottom support part, a horizontal long board 9, an inclined part and a deceleration part; the displacement part includes a base 1, a universal wheel and a first hydraulic cylinder 2; the four corners of the lower end surface of the base 1 are provided with universal wheels; the base 1 can move with the universal wheels; the four corners of the side wall of the base 1 are provided with a first hydraulic cylinder 2, and the piston rod of the first hydraulic cylinder 2 is facing downward, and the end of the piston rod of the first hydraulic cylinder 2 is provided with a support plate; when the four first hydraulic cylinders 2 extend the piston rod, the base 1 can be propped up and the universal wheel is off the ground, which makes the base more stable and not easy to shake; the upper end surface of the base 1 is provided with a slide groove, the bottom end surface of the horizontal long board 9 is provided with a slide bar, and the slide bar of the horizontal long board 9 is slidably arranged in the slide groove of the upper end surface of the base 1; the horizontal long board 9 slides on the base 1; the bottom support part is arranged on the side wall of the base 1, and it is connected to the bottom end surface of the horizontal long board 9; the inclined part is arranged on the top end surface of the horizontal long board 9, and the deceleration part is arranged on the inclined part.

[0013] The bottom support part includes a sleeve 3 and a sliding rod 4; the first end of the bottom end surface of the horizontal long board 9 is provided with a hinge seat, and the side wall of the base 1 is provided with a hinge seat; the sliding rod 4 is inserted in the hole at the end of the sleeve 3; the sliding rod 4 can slide in the sleeve 3, thereby adjusting the total length of the sliding rod 4 and sleeve 3 assembly; one end of the sliding rod 4 and the hinge seat on the bottom end surface of the horizontal long board 9 form a hinged matching connection structure, and one end of the sleeve 3 and the hinge seat on the side wall of the base 1 form a hinged matching connection structure; the sliding of the horizontal long board 9 changes the inclination angle of the sliding rod 4 and the sleeve 3 assembly; a plurality of insertion holes are provided on the side wall of the sliding rod 4 along its length direction, and a positioning hole is provided on the side wall of the sleeve 3, and the pin is simultaneously passed through the positioning hole of the sleeve 3 and the insertion hole corresponding to the position on the sliding rod 4; after the pin is inserted into place, the sliding rod 4 and the sleeve 3 assembly are limited and cannot move relative to each other, thereby supporting the end of the horizontal long board 9.

[0014] The tilting part includes a tipping rod 5 and a second hydraulic cylinder 6; a hinged seat is provided at the upper end surface of the horizontal long plate 9 near the first end, and a hinged seat is provided at the central part of the horizontal long plate 9; one end of the tipping rod 5 and the hinged seat at the upper end surface of the horizontal long plate 9 near the first end form a hinged fitting connection structure, and the hinged seat on the center of the horizontal long plate 9 and the shell of the second hydraulic cylinder 6 form a hinged fitting connection structure; one end of the tipping rod 5 away from the horizontal long plate 9 forms a hinged fitting connection structure with the end of the piston rod of the second hydraulic cylinder 6; the tilting angle of the tipping rod 5 is changed by extending and retracting the piston rod of the second hydraulic cylinder 6, and then the position of the arc brake shoe 8 is adjusted to ensure that it can fit well with the circumferential outer wall of the fan drive shaft to facilitate its braking process.

[0015] The deceleration part includes a slider 7 and an arc-shaped brake shoe 8; a square hole is provided on the slider 7, and the flip rod 5 passes through the square hole of the slider 7; the position of the arc-shaped brake shoe 8 is adjusted by adjusting the sliding position of the slider 7 so that it can better contact the outer wall of the fan drive shaft; the flip rod 5 is evenly provided with a plurality of limiting holes along its length direction, a positioning hole is provided on the slider 7, and a latch is simultaneously passed through the positioning hole of the slider 7 and the limiting hole corresponding to the position of the flip rod 5; the position of the slider 7 and the flip rod 5 can be relatively fixed by inserting the latch; two splints are provided on the arc-shaped outer wall of the arc-shaped brake shoe 8, and the two splints are respectively axially connected on both sides of the slider 7; the axial connection structure enables the arc-shaped brake shoe 8 to better adapt to and fit the fan drive shaft.

[0016] Actual use process: when it is necessary to shut down the fan, push the device to the side of the fan drive shaft in advance, start the first hydraulic cylinder 2 to lift the base 1 and fix it, and then shut down the fan; after shutting down, push the horizontal long board 9 forward until the arc brake shoe 8 is about to contact the drive shaft, and then use the pin to fix the sleeve 3 and the slide bar 4; then slide the slider 7 to make the arc brake shoe 8 close to the fan drive shaft; then use the pin to fix the slider 7 and the flip bar 5, start the second hydraulic cylinder 6, so that the arc brake shoe 8 contacts the drive shaft, and apply appropriate pressure until the drive shaft stops. At this point, the drive shaft deceleration operation is completed, and the various parts of the device are reset and moved away, and the fan drive shaft deceleration operation is completed.

Claims

1. A speed reduction device suitable for a fan drive shaft, characterized in that: The invention comprises a displacement part, a bottom support part, a horizontal long board (9), an inclined part and a deceleration part; the displacement part comprises a base (1), a universal wheel and a first hydraulic cylinder (2); the four corners of the lower end surface of the base (1) are provided with universal wheels; the four corners of the side wall of the base (1) are provided with a first hydraulic cylinder (2), and the piston rod of the first hydraulic cylinder (2) faces downward, and a support plate is provided at the end of the piston rod of the first hydraulic cylinder (2); the upper end surface of the base (1) is provided with a slide groove, the bottom end surface of the horizontal long board (9) is provided with a slide bar, and the slide bar of the horizontal long board (9) is slidably arranged in the slide groove of the upper end surface of the base (1); the bottom support part is arranged on the side wall of the base (1) and is connected to the bottom end surface of the horizontal long board (9); the inclined part is arranged on the top end surface of the horizontal long board (9), and the deceleration part is arranged on the inclined part.

2. The speed reducer for a fan drive shaft according to claim 1, characterized in that: The bottom support part comprises a sleeve (3) and a slide bar (4); a hinge seat is arranged at the first end of the bottom end surface of the horizontal long board (9), and a hinge seat is arranged on the side wall of the base (1); the slide bar (4) is inserted into a hole at the end of the sleeve (3); one end of the slide bar (4) and the hinge seat on the bottom end surface of the horizontal long board (9) form a hinged matching connection structure, and one end of the sleeve (3) and the hinge seat on the side wall of the base (1) form a hinged matching connection structure; a plurality of insertion holes are arranged on the side wall of the slide bar (4) along its length direction, a positioning hole is arranged on the side wall of the sleeve (3), and a pin is simultaneously inserted into the positioning hole of the sleeve (3) and the corresponding insertion hole on the slide bar (4).

3. The speed reduction device for a fan drive shaft according to claim 2, characterized in that: The tilting portion comprises a tipping rod (5) and a second hydraulic cylinder (6); a hinge seat is provided on the upper end surface of the horizontal long board (9) near the first end, and a hinge seat is provided on the central part of the horizontal long board (9); one end of the tipping rod (5) and the hinge seat on the upper end surface of the horizontal long board (9) near the first end form an articulated matching connection structure, and the articulated seat on the center of the horizontal long board (9) and the shell of the second hydraulic cylinder (6) form an articulated matching connection structure; one end of the tipping rod (5) away from the horizontal long board (9) and the end of the piston rod of the second hydraulic cylinder (6) form an articulated matching connection structure.

4. The speed reduction device for a fan drive shaft according to claim 3, characterized in that: The deceleration part comprises a slider (7) and an arc-shaped brake shoe (8); the slider (7) is provided with a square hole, and the flip rod (5) passes through the square hole of the slider (7); the flip rod (5) is evenly provided with a plurality of limiting holes along its length direction, the slider (7) is provided with a positioning hole, and the latch is simultaneously passed through the positioning hole of the slider (7) and the limiting hole corresponding to the position of the flip rod (5); two clamping plates are provided on the arc-shaped outer wall of the arc-shaped brake shoe (8), and the two clamping plates are respectively axially connected to the two sides of the slider (7).

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