Rotary worm hoist
By using worm gear and worm transmission and thrust centering roller bearings in the starter, the existing hydraulic starter has solved the problems of complex structure, high noise and high failure rate, and the compact, low noise and easy-to-maintain the starter design, which improves safety, reliability and stability, and reduces costs.
Patent Information
- Application Number
- CN202421092659.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing hydraulic opening and closing machines have complex structures, easy to seep, high noise, poor environmental protection, high failure rate, difficult maintenance, high maintenance costs, and high professional skills requirements for operation and maintenance personnel, which limits its promotion and application.
The worm gear and worm transmission rotary opening and closing machine is adopted, including power structure, transmission structure, support structure and electrical control device. Through the transmission of the worm and worm gear, combined with thrust centering roller bearings, rotary encoder, frequency converter and other technologies, a compact, low noise and easy-to-maintenance opening and closing machine design is achieved.
It realizes a compact structure, low noise, long service life, simple operation, low failure rate and easy maintenance, reduces manufacturing and maintenance costs, improves operation safety, reliability and stability, and does not require high-professional operation and maintenance personnel.
Smart Images
Figure CN222575422U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a worm gear transmission type gate hoist, in particular to a worm gear transmission type gate hoist used for opening or closing a gate rotating along a vertical axis or a horizontal axis, specifically a rotary worm gear gate hoist. Background Art
[0002] At present, most of the gate hoists used for various types of rotating gates adopt hydraulic transmission. This transmission method has a complex structure, is prone to leakage, has high noise, is less environmentally friendly, has an exposed piston rod that is prone to corrosion, has many hydraulic components, has a high failure rate, is difficult to repair, has high maintenance costs, is expensive, and has a low cost-performance ratio. It is not easy to check when a hydraulic gate hoist fails, especially for engineering operation and management units where hydraulic technology is not very popular. This contradiction often hinders the further promotion and application of hydraulic gate hoists. The maintenance of hydraulic gate hoists requires high professional knowledge of operation and maintenance personnel and relies on experience, and it takes a long time to train hydraulic technicians. Utility Model Content
[0003] The purpose of the utility model is to provide a rotary worm gear gate hoist, which has a compact structure, low noise, long service life, simple operation, low failure rate, easy maintenance, and low requirements on the professional skills of operation and maintenance personnel, thereby improving the safety, reliability and stability of the gate hoist operation, and the manufacturing cost is lower than that of the hydraulic gate hoist, the maintenance cost is low, and the cost performance is high.
[0004] The technical solution adopted by the utility model is:
[0005] A rotary worm gear door opening and closing machine comprises a power structure, a transmission structure, a support structure and an electrical control device. The power structure is connected to the transmission structure, the transmission structure is mounted on the support structure, and the electrical control device controls the operation of the entire device.
[0006] The power structure includes a motor, a reducer, and a bracket, wherein the reducer is mounted on the bracket, and the input end of the reducer is connected to the motor via a key or a coupling;
[0007] The transmission structure includes a worm, a worm wheel, a baffle and a torque output shaft. The torque input end of the worm is connected to the output end of the reducer through a coupling. The worm and the worm wheel constitute a worm gear transmission pair. The worm wheel is fixedly connected to the torque output shaft. A hole is provided in the middle of the baffle, through which the torque output shaft passes and is installed on both sides of the worm wheel.
[0008] The supporting structure includes a casing, a supporting part, a self-aligning thrust roller bearing, a first bearing gland, a second bearing gland, a bearing, a first sealing gland, a second sealing gland, and a frame. Both ends of the worm are supported in the casing through self-aligning thrust roller bearings; both ends of the torque output shaft of the transmission structure are supported on the supporting part through bearings, and the supporting part is fixedly mounted on the casing through screws; the torque input end of the worm is provided with a first bearing gland, which is fixed to the casing through screws; the tail end of the worm is provided with a second bearing gland, which is fixed to the casing through screws; the output end support of the torque output shaft is provided with a second sealing gland, which is fixed to the casing through screws; the tail end of the torque output shaft is provided with a first sealing gland, which is fixed to the casing through screws; the casing is fixed to the frame through high-strength bolts, and the frame is fixed to the steel structure embedded in reinforced concrete;
[0009] The electrical control device includes a rotary encoder and an electrical control cabinet, and the electrical control cabinet includes a programmable logic controller PLC and a frequency converter. Taking the frequency converter motor as an example, the rotary encoder is fixedly mounted on the first sealing gland by screws, and the first sealing gland and the tail end of the torque output shaft are both provided with shaft holes. The rotating shaft of the rotary encoder passes through the shaft hole of the first sealing gland and rotates together with the tail end of the torque output shaft through a flat key connection. The signal of the rotary encoder is connected to the electrical control cabinet through a signal cable; the programmable logic controller PLC sends instructions to the frequency converter to adjust the speed of the motor according to the signal of the rotary encoder, thereby controlling the speed of the torque output shaft.
[0010] Preferably, the casing may be a welded part or a steel casting.
[0011] Preferably, a guide belt, a sealing ring and a dust ring are arranged in the first bearing gland, a sealing ring is arranged in the second bearing gland, and the support member is provided with a sealing ring.
[0012] Preferably, the electric motor is a variable frequency motor, and may also be a servo motor.
[0013] Preferably, the support member is provided with an axial hole for the torque output shaft to pass through, and the bearing is installed in the axial hole.
[0014] Preferably, a sealing ring and a dust ring are arranged in the second sealing gland, and a sealing ring is arranged in the first sealing gland.
[0015] Preferably, the self-aligning thrust roller bearing has axial and radial load-bearing capacity and an extremely low friction coefficient, and ensures that the worm can rotate flexibly while bearing the huge thrust load of the worm.
[0016] Preferably, an oil filling hole is provided at the top of the casing, and an oil drain hole is provided at the bottom, and the holes are sealed with screw plugs.
[0017] Preferably, the rotary encoder is of an absolute type and is used to detect the rotation speed of the torque output shaft.
[0018] Preferably, the frequency converter is used to control the rotation speed of the motor. When two motors of the same model are used, one frequency converter can also be used to control the rotation speeds of the two motors at the same time.
[0019] Preferably, when two motors are used, the same air switch is used to turn the power on and off to ensure that the two motors are started and stopped at the same time.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] 1. The worm gear is completely enclosed in the casing and will not be contaminated by the outside world.
[0022] 2. Due to the use of thrust spherical roller bearings, the worm is provided with strong axial and radial support while having a very small friction coefficient. The worm can be designed with a larger load and rotate flexibly.
[0023] 3. The adopted rotary encoder and frequency converter can detect and adjust the rotation speed of the gate hoist of the utility model in real time as needed through the programmable logic controller PLC, which can fully meet the requirements of synchronous deviation correction of the double-sided gate hoists of various types of rotating gates driven by the rotating shaft.
[0024] 4. The gate hoist is driven by a worm gear, and roller bearings are used at the supports of the worm gear and the torque output shaft, and grease can be added as needed. Therefore, the gate hoist of the utility model has the advantage of low noise.
[0025] 5. In view of the low rotation speed of various revolving gates driven by rotating shafts, the rotary worm gear opening and closing machine provided by the utility model has the advantages of low heat generation and fast heat dissipation, which can fully meet the opening and closing needs of various revolving gates driven by rotating shafts.
[0026] 6. The self-locking function of the worm gear drive can meet the requirement of holding the gate at any opening without the need to set up a complex locking mechanism.
[0027] 7. The utility model has a compact and stable structure, realizes an integrated design, occupies a small area, is easy to use, basically requires no maintenance, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is the front view of the utility model driven by double worms and double motors;
[0029] Figure 2This is a side view of the utility model driven by double worms and double motors;
[0030] Figure 3 This is a rear view of the utility model driven by double worms and double motors.
[0031] Figure 4 This is a cross-sectional view of the utility model driven by double worms and double motors;
[0032] Figure 5 This is a longitudinal sectional view of the utility model driven by double worms and double motors;
[0033] Figure 6 This is the front view of the utility model driven by double worms and a single motor;
[0034] Figure 7 This is a top view of the utility model driven by a double worm and a single motor;
[0035] Figure 8 This is the front view of the utility model driven by a single worm and a single motor.
[0036] Fig. 9 This is a control flow chart of the utility model using double worm and double motor drive.
[0037] In the figure: 1-power structure; 11-electric motor; 12-reducer; 13-coupling; 14-bracket; 2-transmission structure; 21-worm; 22-worm wheel; 23-baffle; 24-torque output shaft; 3-support structure; 31-casing; 32-support member; 33-spherical thrust roller bearing; 34-first bearing gland; 35-second bearing gland; 36-bearing; 37-first sealing gland; 38-second sealing gland; 39-frame; 310-screw plug; 4-electrical control device; 41-rotary encoder; 42-electrical control cabinet. DETAILED DESCRIPTION
[0038] The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the utility model, several changes and improvements can be made, such as changing the motor drive to a hydraulic motor drive, etc. These all fall within the scope of protection of the utility model.
[0039] In the description of the present application, it should be understood that terms such as bottom, inside, outside, etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 a limitation on the present application.
[0040] Embodiment 1:
[0041] The utility model adopts double worm and double motor drive, see Figure 1 to Figure 5 , Fig. 9 .
[0042] like Figure 1 , Figure 2 As shown, the utility model is a rotary worm gear hoist, comprising a power structure 1, a transmission structure 2, a support structure 3 and an electrical control device 4. Figure 4 As shown, the power structure 1 is connected to the worm 21 of the transmission structure 2 through a coupling 13, the transmission structure 2 is installed on the support structure 3, and the electrical control device 4 controls the operation of the entire equipment.
[0043] like Figure 4 As shown, the power structure 1 includes a motor 11, a reducer 12, and a bracket 14. The motor 11 is a variable frequency motor or a servo motor, and the reducer 12 is installed on the bracket 14. The input end of the reducer 12 is connected to the motor 11 through a key or a coupling 13.
[0044] like Figure 5 As shown, the transmission structure 2 includes a worm 21, a worm wheel 22, a baffle 23, and a torque output shaft 24. The worm 21 is connected to the output end of the reducer 12 through a coupling 13, the worm 21 and the worm wheel 22 form a worm gear transmission pair, the worm wheel 22 is connected to the torque output shaft 24 to output torque, and the baffles 23 are installed on both sides of the worm wheel 22 to limit the axial movement of the worm wheel 22.
[0045] like Figure 4 , Figure 5 As shown, the support structure 3 includes a housing 31, a support member 32, a self-aligning thrust roller bearing 33, a first bearing gland 34, a second bearing gland 35, a bearing 36, a first sealing gland 37, a second sealing gland 38, a frame 39, and a screw plug 310. Both ends of the worm 21 are supported in the housing 31 through the self-aligning thrust roller bearing 33 and the first bearing gland 34 and the second bearing gland 35, and the first bearing gland 34 and the second bearing gland 35 are respectively fixed to the housing 31 by screws. Both ends of the torque output shaft 24 are supported on the support member 32 through bearings 36, and the support member 32 is fixedly mounted on the housing 31 by screws.
[0046] The first sealing gland 37 and the second sealing gland 38 are both provided with sealing rings. The first sealing gland 37 is installed at the tail of the torque output shaft 24 by screws, and the second sealing gland 38 is installed at the head of the torque output shaft 24 by screws. Grease can be added to the housing 31 as needed and the screw plug 310 can be used to tighten the seal. A screw hole for discharging grease is provided at the bottom of the housing 31 and is sealed with the screw plug 310. The housing 31 is fixed to the frame 39 by high-strength bolts, and the frame 39 is fixed to the foundation.
[0047] like Figure 3 , Figure 5 As shown, the electric control device 4 includes a rotary encoder 41 and an electric control cabinet 42. The rotary encoder 41 is mounted on the first sealing gland 37, and the rotating shaft of the rotary encoder 41 is connected to the tail shaft hole of the torque output shaft 24 through a flat key.
[0048] like Fig. 9 As shown, taking the variable frequency motor as an example, the electrical control cabinet 42 includes a controllable logic editor and a frequency converter, which are connected to the rotary encoder 41 and the motor 11 through a signal cable. The electrical control cabinet 42 determines the speed of the torque output shaft 24 through the signal of the rotary encoder 41 and automatically adjusts the speed of the motor 11, thereby controlling the output speed of the torque output shaft 24.
[0049] Embodiment 2:
[0050] The utility model adopts double worm single motor drive, see Figure 6 , Figure 7 .
[0051] Different from Example 1, Figure 6 , Figure 7 As shown, the utility model embodiment 2 adopts a single motor 11 and a dual output reducer 12, which are connected to the double worm 21 through a coupling 13. To output the same torque, the motor power of embodiment 2 is much larger, and the performance requirements of the reducer 12 are higher.
[0052] Embodiment 3:
[0053] The utility model adopts a single worm and a single motor drive, see Figure 8 .
[0054] Different from Example 1 and Example 2, Figure 8As shown, the utility model adopts a single motor 11 and a reducer 12 connected to a worm 21 through a coupling 13. Compared with the double worm drive, the center distance of the worm gear of the single worm drive is half of that of the double worm drive. After design and calculation, the current materials and manufacturing processes of the single motor single worm drive can meet the output torque requirement of 800kN·m. Therefore, the single motor single worm drive of the utility model rotary worm opening and closing machine can be used as a driving device for a rotary gate driven by a small rotating shaft.
[0055] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.
Claims
1. A rotary worm gear hoist, characterized in that: It includes a power structure, a transmission structure, a supporting structure, and an electrical control device. The power structure is connected to the transmission structure, the transmission structure is installed on the supporting structure, and the electrical control device controls the operation of the entire equipment; the power structure includes an electric motor, a reducer, and a bracket. The reducer is installed on the bracket, and the input end of the reducer is connected to the electric motor through a key or a coupling; the transmission structure includes a worm, a worm wheel, a baffle and a torque output shaft. The torque input end of the worm is connected to the output end of the reducer through a coupling, the worm and the worm wheel constitute a worm gear transmission pair, the worm wheel is fixedly connected to the torque output shaft, and a hole is provided in the middle of the baffle to pass through the torque output shaft and is installed on both sides of the worm wheel.
2. The rotary worm gear hoist according to claim 1, characterized in that: The supporting structure includes a casing, a supporting part, a self-aligning thrust roller bearing, a first bearing gland, a second bearing gland, a bearing, a first sealing gland, a second sealing gland, and a frame. Both ends of the worm are supported in the casing through self-aligning thrust roller bearings; both ends of the torque output shaft of the transmission structure are supported on the supporting part through bearings, and the supporting part is fixedly mounted on the casing through screws; the torque input end of the worm is provided with a first bearing gland, which is fixed to the casing through screws; the tail end of the worm is provided with a second bearing gland, which is fixed to the casing through screws; the output end support of the torque output shaft is provided with a second sealing gland, which is fixed to the casing through screws; the tail end of the torque output shaft is provided with a first sealing gland, which is fixed to the casing through screws; the casing is fixed to the frame through high-strength bolts, and the frame is fixed to the steel structure embedded in reinforced concrete; The electrical control device includes a rotary encoder and an electrical control cabinet, the electrical control cabinet includes a programmable logic controller (PLC) and a frequency converter; the rotary encoder is fixedly mounted on the first sealing cover by screws, the first sealing cover and the tail end of the torque output shaft are both provided with axial holes, the rotating shaft of the rotary encoder passes through the axial hole of the first sealing cover and is connected to the tail end of the torque output shaft by a flat key to rotate together, and the signal of the rotary encoder is connected to the electrical control cabinet through a signal cable; the programmable logic controller (PLC) sends instructions to the frequency converter to adjust the speed of the motor according to the signal of the rotary encoder, thereby controlling the speed of the torque output shaft.
3. The rotary worm gear hoist according to claim 2, characterized in that: A guide belt, a sealing ring and a dust ring are arranged in the first bearing gland, a sealing ring is arranged in the second bearing gland, and a sealing ring is arranged in the support.
4. The rotary worm gear hoist according to claim 2, characterized in that: The support member is provided with an axial hole for the torque output shaft to pass through, and the bearing is installed in the axial hole.
5. The rotary worm gear hoist according to claim 2, characterized in that: A sealing ring and a dust ring are arranged inside the second sealing gland, and a sealing ring is arranged inside the first sealing gland.
6. The rotary worm gear hoist according to claim 2, characterized in that: The upper part of the casing is provided with an oil filling hole, and the bottom is provided with an oil drain hole, which are sealed with screw plugs.
7. The rotary worm gear hoist according to claim 2, characterized in that: The rotary encoder is an absolute type and is used to detect the rotation speed of the torque output shaft.
8. The rotary worm gear hoist according to claim 2, characterized in that: The frequency converter is used to control the rotation speed of the motor. When two motors of the same model are used, one frequency converter is used to control the rotation speeds of the two motors simultaneously.
9. The rotary worm gear hoist according to claim 2, characterized in that: When two motors are used, the same air switch is used to turn on and off the power supply to ensure that the two motors are started and stopped at the same time.