Noise reducing worm gear elevator

Abstract

The utility model discloses a noise reduction worm and gear elevator, it includes: box, worm wheel subassembly and worm, be equipped with first installation cavity and second installation cavity in the box, the box top first installation cavity is on the screw thread connection box cover, the bottom surface of box fixed mounting honeycomb board, the worm wheel subassembly includes wheel hub and nylon gear ring, the nylon gear ring is set in the wheel hub outside, and is connected fixedly with the wheel hub, the both ends of wheel hub are through a first bearing rotation installation in first installation cavity respectively, the wheel hub is along the extension direction of wheel hub and is equipped with the lead screw, the lead screw is connected with the wheel hub thread, the outer wall of worm is equipped with the teflon coating, the both ends of worm are through a second bearing rotation installation in second installation cavity respectively, and the worm is engaged with nylon gear ring. The utility model can effectively reduce the noise that elevator runs, satisfies the demand of quiet equipment.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a noise-reducing worm gear lift. Background Technology

[0002] A screw jack, also known as a screw drive mechanism, is mainly used to convert rotary motion into linear motion of a screw. It is widely used in applications requiring lifting, lowering, or tilting of loads. Worm gear drives, due to their compact structure and large transmission ratio, are widely used in various low-speed transmission scenarios. Most existing screw jacks employ worm gear mechanisms. Traditional worm gears use a steel structure with rigid meshing, and the impact and friction on the tooth surfaces during operation easily generate high-frequency noise, typically 65-75 decibels, which can cause noise pollution to the working environment and is unsuitable for environments requiring high levels of quiet operation. Utility Model Content

[0003] The purpose of this invention is to provide a noise-reducing worm gear lift that can effectively reduce the noise generated during operation and meet the requirements of quiet equipment.

[0004] To achieve the above and other related objectives, this utility model provides a noise-reducing worm gear jack, comprising: a housing, a worm gear assembly, and a worm. The housing has a first mounting cavity and a second mounting cavity, the second mounting cavity being disposed on the housing on one side of the first mounting cavity. The axes of the first mounting cavity and the second mounting cavity are perpendicular. A housing cover is threadedly connected to the top of the housing of the first mounting cavity. A honeycomb plate is fixedly installed on the bottom surface of the housing. The worm gear assembly includes a hub and a nylon gear ring. The nylon gear ring is sleeved on the outside of the hub and fixedly connected to the hub. Both ends of the hub are rotatably mounted in the first mounting cavity through a first bearing. A lead screw passes through the hub along the extension direction of the hub and is threadedly connected to the hub. Both ends of the lead screw pass through the housing cover and the housing. The outer wall of the worm is coated with polytetrafluoroethylene. Both ends of the worm are rotatably mounted in the second mounting cavity through a second bearing. The worm meshes with the nylon gear ring.

[0005] In one example of the noise-reducing worm gear jack of this utility model, a first sleeve is provided on the bottom surface of the housing around the lead screw. The first sleeve is coaxially arranged with the lead screw. A first copper ring is fixedly installed on the inner wall of the first sleeve, and the inner wall of the first copper ring cooperates with the outer wall of the lead screw.

[0006] In one example of the noise-reducing worm gear jack of this utility model, a second sleeve is provided on the top surface of the housing cover around the lead screw. The second sleeve is coaxially arranged with the lead screw. A second copper ring is fixedly installed on the inner wall of the second sleeve, and the inner wall of the second copper ring cooperates with the outer wall of the lead screw.

[0007] In one example of the noise-reducing worm gear jack of this utility model, a first annular fixing seat is provided in the middle of the outer wall of the hub. The first fixing seat has several blind holes on the end face facing the nylon gear ring. A first fixing groove is provided on one end face of the nylon gear ring, and several countersunk holes are provided on the other end face of the nylon gear ring. The first fixing seat cooperates with the first fixing groove, and the several blind holes cooperate with the several countersunk holes respectively and are fixedly connected by several first bolts.

[0008] In one example of the noise-reducing worm gear jack of this utility model, the thickness of the polytetrafluoroethylene coating is 0.2 to 0.5 mm.

[0009] In one example of the noise-reducing worm gear jack of this utility model, a retaining ring is fixedly installed on the inner wall of the second mounting cavity on the side of the two second bearings away from the worm gear assembly, and the two retaining rings cooperate with the two second bearings respectively.

[0010] In one example of the noise-reducing worm gear jack of this utility model, an oil seal is fixedly installed on the inner wall of each end of the second mounting cavity, and the two oil seals respectively cooperate with the outer wall of each end of the worm.

[0011] In one example of the noise-reducing worm gear jack of this utility model, a wing plate is provided on the periphery of the bottom of the housing, and a plurality of first fixing holes are provided on the wing plate.

[0012] In one example of the noise-reducing worm gear jack of this utility model, the honeycomb plate is bonded to the bottom surface of the housing, and the honeycomb plate is provided with a plurality of second fixing holes, and the plurality of first fixing holes respectively cooperate with the plurality of second fixing holes.

[0013] This utility model relates to a noise-reducing worm gear jack. The housing is fixedly mounted on the main body of the equipment. The end of the worm is connected to a power source, and the lead screw is connected to the load. The power source drives the worm to rotate, which in turn drives the worm gear assembly to rotate. The worm gear assembly then drives the lead screw to move, thus moving the load. The worm's teeth, coated with polytetrafluoroethylene (PTFE), mesh with a nylon gear ring. The elastic deformation of the PTFE coating and the toughness of the nylon absorb a large portion of the meshing impact. The low coefficient of friction of the PTFE coating reduces sliding friction noise during operation. The PTFE coating also improves the worm's wear resistance. The honeycomb plate at the bottom of the housing reduces vibration transmission and prevents secondary noise. This utility model effectively reduces the noise generated during the operation of the jack, meeting the requirements for quiet equipment. Attached Figure Description

[0014] Figure 1 A cross-sectional view of an embodiment of the noise-reducing worm gear jack of this utility model. Figure 1 ; Figure 2 A cross-sectional view of an embodiment of the noise-reducing worm gear jack of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the worm gear assembly in one embodiment of the noise-reducing worm gear jack of this utility model.

[0015] Component designation: 100 Housing; 110 First mounting cavity; 120 Second mounting cavity; 130 Housing cover; 131 Second sleeve section; 132 Second copper ring; 140 Honeycomb panel; 141 Second fixing hole; 150 First sleeve section; 160 First copper ring; 170 Wing plate; 171 First fixing hole; 200 Worm gear assembly; 210 Hub; 211 First fixing seat; 220 Nylon gear ring; 230 First bearing; 240 Lead screw; 250 First bolt; 300 Worm; 310 Second bearing; 320 Snap ring; 330 Oil seal. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0017] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0018] Please see Figures 1 to 3 This utility model provides a noise-reducing worm gear lift, which includes: a housing 100, a worm gear assembly 200 and a worm 300. The housing 100 is provided with a first mounting cavity 110 and a second mounting cavity 120. The second mounting cavity 120 is disposed on the housing 100 on one side of the first mounting cavity 110. The axes of the first mounting cavity 110 and the second mounting cavity 120 are perpendicular. A housing cover 130 is threadedly connected to the top of the housing 100 of the first mounting cavity 110. A honeycomb plate 140 is fixedly installed on the bottom surface of the housing 100. The worm gear assembly 200 includes a hub 210 and a nylon gear ring 220. The nylon gear ring 220 is sleeved on the outside of the hub 210 and is fixedly connected to the hub 210. Both ends of the hub 210 are rotatably mounted in the first mounting cavity 110 via a first bearing 230. A lead screw 240 passes through the hub 210 along its extension direction and is threadedly connected to the hub 210. Both ends of the lead screw 240 pass through the cover 130 and the housing 100, respectively. The outer wall of the worm gear 300 is coated with polytetrafluoroethylene (PTFE). Both ends of the worm gear 300 are rotatably mounted in the second mounting cavity 120 via a second bearing 310, and the worm gear 300 meshes with the nylon gear ring 220.

[0019] The housing 100 of this invention is fixedly mounted on the main body of the equipment. The end of the worm gear 300 is connected to a power source, and the lead screw 240 is connected to the load. The power source drives the worm gear 300 to rotate, which in turn drives the worm wheel assembly 200 to rotate. The worm wheel assembly 200 then drives the lead screw 240 to move up and down, thus moving the load. The worm gear 300 has a PTFE-coated tooth surface that meshes with a nylon gear ring 220. The elastic deformation of the PTFE coating and the toughness of the nylon can absorb a large portion of the meshing impact. The low coefficient of friction of the PTFE coating can reduce sliding friction noise generated during operation. The PTFE coating can also improve the wear resistance of the worm gear 300. The honeycomb plate 140 at the bottom of the housing 100 can reduce vibration transmission and prevent secondary noise.

[0020] Please see Figures 1 to 3 In one example of the noise-reducing worm gear jack of this utility model, a first sleeve portion 150 is provided on the bottom surface of the housing 100 surrounding the lead screw 240. The first sleeve portion 150 is coaxially arranged with the lead screw 240. A first copper ring 160 is fixedly installed on the inner wall of the first sleeve portion 150, and the inner wall of the first copper ring 160 mates with the outer wall of the lead screw 240. A second sleeve portion 131 is provided on the top surface of the housing cover 130 surrounding the lead screw 240. The second sleeve portion 131 is coaxially arranged with the lead screw 240. A second copper ring 132 is fixedly installed on the inner wall of the second sleeve portion 131, and the inner wall of the second copper ring 132 mates with the outer wall of the lead screw 240.

[0021] Please see Figures 1 to 3 In one example of the noise-reducing worm gear jack of this utility model, the outer wall of the hub 210 is provided with an annular first fixing seat 211 in the middle. The end face of the first fixing seat 211 facing the nylon gear ring 220 is provided with a plurality of blind holes. One end face of the nylon gear ring 220 is provided with a first fixing groove. The other end face of the nylon gear ring 220 is provided with a plurality of countersunk holes. The first fixing seat 211 cooperates with the first fixing groove. The plurality of blind holes cooperate with the plurality of countersunk holes respectively and are fixedly connected by a plurality of first bolts 250.

[0022] Please see Figures 1 to 3 In one example of the noise-reducing worm gear jack of this utility model, the thickness of the polytetrafluoroethylene coating is 0.2-0.5 mm. A retaining ring 320 is fixedly installed on the inner wall of the second mounting cavity 120 on the side of the two second bearings 310 away from the worm gear assembly 200, and the two retaining rings 320 respectively cooperate with the two second bearings 310. An oil seal 330 is fixedly installed on the inner wall of each end of the second mounting cavity 120, and the two oil seals 330 respectively cooperate with the outer walls of both ends of the worm 300.

[0023] Please see Figures 1 to 3 In one example of the noise-reducing worm gear jack of this utility model, a wing plate 170 is provided on the outer periphery of the bottom of the housing 100, and the wing plate 170 is provided with a plurality of first fixing holes 171. The honeycomb plate 140 is bonded to the bottom surface of the housing 100, and the honeycomb plate 140 is provided with a plurality of second fixing holes 141, and the plurality of first fixing holes 171 respectively cooperate with the plurality of second fixing holes 141.

[0024] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A noise-reducing worm gear jack, characterized in that, include: The box body has a first mounting cavity and a second mounting cavity inside. The second mounting cavity is disposed on the box body on one side of the first mounting cavity. The axes of the first mounting cavity and the second mounting cavity are perpendicular. A box cover is threadedly connected to the top of the box body of the first mounting cavity. A honeycomb panel is fixedly installed on the bottom surface of the box body. A worm gear assembly, comprising a hub and a nylon gear ring, the nylon gear ring being sleeved on the outside of the hub and fixedly connected to the hub, the two ends of the hub being rotatably mounted in the first mounting cavity via a first bearing, a lead screw passing through the hub along the extension direction of the hub, the lead screw being threadedly connected to the hub, and the two ends of the lead screw passing through the cover and the housing respectively; The worm gear has a polytetrafluoroethylene coating on its outer wall. Both ends of the worm gear are rotatably mounted in the second mounting cavity via a second bearing. The worm gear meshes with the nylon gear ring.

2. The noise-reducing worm gear jack as described in claim 1, characterized in that, A first sleeve is provided on the bottom surface of the housing surrounding the lead screw. The first sleeve is coaxial with the lead screw. A first copper ring is fixedly installed on the inner wall of the first sleeve, and the inner wall of the first copper ring cooperates with the outer wall of the lead screw.

3. The noise-reducing worm gear jack as described in claim 2, characterized in that, A second sleeve is provided on the top surface of the box cover surrounding the lead screw. The second sleeve is coaxial with the lead screw. A second copper ring is fixedly installed on the inner wall of the second sleeve, and the inner wall of the second copper ring cooperates with the outer wall of the lead screw.

4. The noise-reducing worm gear jack as described in claim 1, characterized in that, The outer wall of the wheel hub is provided with an annular first fixing seat in the middle. The end face of the first fixing seat facing the nylon gear ring is provided with several blind holes. One end face of the nylon gear ring is provided with a first fixing groove. The other end face of the nylon gear ring is provided with several countersunk holes. The first fixing seat cooperates with the first fixing groove. The several blind holes cooperate with the several countersunk holes respectively and are fixedly connected by several first bolts.

5. The noise-reducing worm gear jack as described in claim 1, characterized in that, The thickness of the polytetrafluoroethylene coating is 0.2 to 0.5 mm.

6. The noise-reducing worm gear jack as described in claim 1, characterized in that, A retaining ring is fixedly installed on the inner wall of the second mounting cavity on the side of the two second bearings away from the worm gear assembly, and the two retaining rings respectively cooperate with the two second bearings.

7. The noise-reducing worm gear jack as described in claim 6, characterized in that, An oil seal is fixedly installed on the inner wall at each end of the second mounting cavity, and the two oil seals respectively cooperate with the outer wall at both ends of the worm.

8. The noise-reducing worm gear jack as described in claim 1, characterized in that, The bottom periphery of the box is provided with a wing plate, and the wing plate is provided with a number of first fixing holes.

9. The noise-reducing worm gear jack as described in claim 8, characterized in that, The honeycomb panel is bonded to the bottom surface of the box. The honeycomb panel is provided with a plurality of second fixing holes, and the plurality of first fixing holes respectively cooperate with the plurality of second fixing holes.

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