A down drive system for a tin bath inlet damper of a float glass tin bath
By introducing electric and manual drive mechanisms into the lower transmission system of the regulating gate at the inlet of the float glass tin bath, combined with linear displacement sensors and limit switches, the problems of large size and insufficient adjustment accuracy of traditional systems are solved, achieving high-precision gate control and improving glass forming quality and production efficiency.
Patent Information
- Application Number
- CN202522007480.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-18
AI Technical Summary
The traditional float glass tin bath inlet regulating gate's lower transmission system is bulky, occupies a lot of space, is complex to maintain, and lacks precise adjustment functions, resulting in fluctuations in glass drawing volume, affecting molding quality and easily causing production accidents.
It adopts two control structures, including an electric drive mechanism and a manual drive mechanism, combined with a linear displacement sensor and limit switch to achieve precise control of the gate lifting. It achieves a compact design through a screw jack and a screw bevel gear reversing drive, supports electric and manual dual-mode drive, and improves adjustment accuracy.
It achieves high-precision control of gate lifting, reduces the accident rate, improves glass forming quality and production efficiency, and reduces equipment footprint and maintenance complexity.
Smart Images
Figure CN224677969U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of float glass tin bath technology, and in particular to a lower transmission system for a tin bath inlet regulating gate for float glass tin baths. Background Technology
[0002] The lower drive system of the tin bath inlet regulating gate is a key piece of equipment in a float glass production line. The stability of this system directly affects the quality and production efficiency of the glass forming process. Currently, the inlet regulating gate is mainly used to regulate the flow rate of molten glass entering the tin bath through the flow channel and trough, to meet the required drawing volume for glass of different thicknesses. The equipment has two gate regulating systems, which can adjust two gates separately. By controlling the lifting height of the two gates, the flow rate of molten glass entering the tin bath is regulated, directly affecting the thickness and quality of the formed glass.
[0003] Traditional regulating gate lower drive systems are bulky, occupy a lot of space, and are complex to maintain. They lack precise adjustment capabilities, which can easily lead to fluctuations in glass pulling volume, affecting molding quality and potentially causing production accidents. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and to provide a lower transmission system for the regulating gate of the tin bath inlet of float glass, comprising: Two control structures, each of which includes: Two parallel transmission supports; An electric drive mechanism includes a lifting structure disposed above any one of the transmission supports, a drive member connected to the drive end of one of the lifting structures, and a first transmission shaft that drives the two lifting structures; the lifting column in the lifting structure moves up and down in the lifting structure under the drive of the drive member. The lower ends of the two support sleeves are respectively connected to the two lifting columns, and the bottoms of the two support sleeves are connected by a limiting rod. A crossbeam, the two ends of which are respectively connected to the tops of the two supporting sleeves; A gate assembly is disposed at the center of the crossbeam; The manual drive mechanism includes a reversing transmission structure connected to the driven end of the lifting mechanism (which does not have the driving component), a second drive shaft connected to the reversing transmission structure via a universal coupling, and a handwheel connected to the second drive shaft in sequence via a universal coupling and the reversing transmission structure; the lifting column in the lifting structure moves up and down in the lifting structure under the driving force transmitted by the rotation of the handwheel. A linear displacement sensor, wherein the fixed end of the linear displacement sensor is fixedly connected to the transmission bracket near the manual drive mechanism, and the movable end of the linear displacement sensor is connected to the limiting rod; The limit switch assembly includes a travel limit rod disposed on the side of the limit rod and two limit switches symmetrically disposed at both ends of the travel limit rod.
[0005] Furthermore, the transmission bracket adopts a rectangular frame, the bottom of the transmission bracket is secured by anchor bolts, and a first through column is provided at the center of the transmission bracket, the outer diameter of the first through column being matched with the outer diameter of the lifting column.
[0006] Furthermore, the lifting structure is a screw jack; the lifting column is a lead screw that is threaded into the inner cavity of the turbine in the screw jack; and the driving component is a variable frequency motor connected to the worm gear in the screw jack.
[0007] Furthermore, the gate assembly includes a gate clamp connected to the crossbeam and an adjusting gate connected to the bottom of the gate clamp.
[0008] Furthermore, the reversing transmission structure is a spiral bevel gear reversing transmission.
[0009] Furthermore, the adjustment accuracy range of the linear displacement sensor used to control the lifting height of the regulating gate is [0, 0.05] mm.
[0010] Furthermore, the lifting range of the limit switch used to limit the lifting height of the regulating gate is [0, 1200] mm.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The present invention provides a lower transmission system for a tin bath inlet regulating gate for float glass tin baths, which includes both electric and manual drive modes to adapt to automated and emergency conditions.
[0012] 2. The present invention relates to a screw jack for adjusting the gate plate at the inlet of a float glass tin bath, which is equipped with a linear displacement sensor to monitor the lifting height of the gate plate and improve the lifting accuracy.
[0013] 3. The tin bath inlet regulating gate of the float glass tin bath of this utility model is also equipped with a limit switch. The limit switch and the linear displacement sensor work together to realize position monitoring and reduce the accident rate.
[0014] 4. Any set of control structures of the tin bath inlet regulating gate for float glass tin bath according to this utility model includes both an electric drive mechanism for transmitting driving force laterally and a manual drive mechanism for transmitting driving force vertically. The compact design reduces the footprint and makes maintenance convenient. Attached Figure Description
[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view schematic diagram of the lower transmission system of the tin bath inlet regulating gate for float glass tin bath according to the present invention. Figure 2 This is a side view of the retaining wall gate of the lower transmission system of the regulating gate for the tin bath inlet of float glass according to the present invention.
[0016] Figure Labels 1: Transmission bracket; 2: Electric drive mechanism; 21: Lifting structure; 22: Driving component; 23: First drive shaft; 3: Support sleeve; 4: Limit rod; 5: Crossbeam; 6: Gate assembly; 61: Gate clamp; 62: Adjusting gate; 7: Manual drive mechanism; 71: Reversing drive structure; 72: Universal coupling; 73: Second drive shaft; 74: Handwheel; 8: Linear displacement sensor; 9: Limit switch. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.
[0018] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0019] First Embodiment Please see Figure 1-2The technical solution of the lower transmission system for the regulating gate of the tin bath inlet of float glass tin bath provided in this embodiment includes the following: Two sets of control structures are arranged in parallel, and either set of control structures includes: Two parallel transmission supports 1; The electric drive mechanism 2 includes a lifting structure 21 disposed above any one of the transmission brackets 1, a drive member 22 connected to the drive end of one of the lifting structures 21, and a first transmission shaft 23 that drives the two lifting structures 21; the lifting column in the lifting structure 21 moves up and down in the lifting structure 21 under the drive of the drive member 22. Support sleeve 3, the lower ends of the two support sleeves 3 are respectively connected to the two lifting columns, and the bottoms of the two support sleeves 3 are connected by a limiting rod 4; The crossbeam 5 has its two ends connected to the tops of the two supporting sleeves 3 respectively; The gate assembly 6 is disposed at the center of the crossbeam 5; The manual drive mechanism 7 includes a reversing transmission structure 71 connected to the driven end of the lifting mechanism (which does not have the drive member 22), a second drive shaft 73 connected to the reversing transmission structure 71 via a universal coupling 72, and a handwheel 74 connected to the second drive shaft 73 in sequence via the universal coupling 72 and the reversing transmission structure 71; the lifting column in the lifting structure 21 moves up and down in the lifting structure 21 under the driving force transmitted by the rotation of the handwheel 74. A linear displacement sensor 8, the fixed end of which is fixedly connected to the transmission bracket 1 near the manual drive mechanism 7, and the movable end of which is connected to the limiting rod 4. Limit switch 9 includes a limit rod disposed on the side of the limit rod 4 and two limit switches symmetrically disposed at both ends of the limit rod.
[0020] In specific implementation, as shown in the appendix Figure 1 As shown, attached Figure 1 This is a front view, mainly showing the control structure on the front side. The control structure on the rear side is the same as the control structure on the front side. The control structure mainly includes two parallel transmission brackets 1 at the bottom. Each transmission bracket 1 has a lifting structure 21 on its top. The left component of the left lifting structure 21 is a drive component 22 connected to it. The crossbar connecting the lifting mechanisms on the left and right sides is the first transmission shaft 23. The top of the lifting column in each of the two lifting structures 21 is connected to a support sleeve 3. The crossbar connecting the top of the two support sleeves 3 is a crossbeam 5, and the crossbar connecting the bottom of the two support sleeves 3 is a limit rod 4. The right component of the right lifting mechanism is a reversing transmission structure 71. The reversing transmission structure 71 is fixedly connected to the support sleeve 3 through a bracket. The top of the reversing transmission structure 71 is sequentially connected to a universal coupling 72, a second transmission shaft 73, and another universal coupling 72. The universal coupling 72 at the top is also fixedly connected to the frame through a bracket. A handwheel 74 is rotatably provided on the right side of the universal coupling at the top. The two vertically arranged components of the two support sleeves 3 are a limit switch 9 on the left and a linear displacement sensor 8 on the right.
[0021] In practice, the travel limit rod is vertically set at... Figure 1 The top of the travel limit rod 4 on the rear side can be fixedly connected to an external bracket. The upper and lower ends of the travel limit rod are symmetrically provided with adjustment grooves. Two travel switches can be slidably installed in the two adjustment grooves through the bracket. The triggering part (such as a roller) of the upper travel switch faces downward and the triggering part of the lower travel switch faces upward. The distance between the two triggering parts is the vertical displacement range of the limit rod 4. When the limit rod 4 rises and touches the triggering part (such as a roller) of the upper limit switch assembly 2, the switch will send a signal to stop the drive device from driving the gate assembly 6 upward. Similarly, when the limit rod 4 falls and touches the triggering part (such as a roller) of the lower limit switch assembly 2, the switch will send a signal to stop the drive device from driving the gate assembly 6 downward, preventing the gate from overtravel and causing damage.
[0022] Specifically, the transmission bracket 1 adopts a rectangular frame, the bottom of the transmission bracket 1 is connected by anchor bolts, and the center of the transmission bracket 1 is provided with a first through column, the outer diameter of the first through column is matched with the outer diameter of the lifting column.
[0023] In practice, when the lifting column moves down from the inner cavity of the lifting mechanism, it can be accommodated in the first through column.
[0024] Specifically, the lifting structure 21 is a screw jack; the lifting column is a lead screw that is threaded into the inner cavity of the turbine in the screw jack; and the driving component 22 is a variable frequency motor that is connected to the worm gear in the screw jack.
[0025] In specific implementation, the structure of the screw jack is common knowledge to those skilled in the art. It mainly includes a jack housing, a worm gear transversely disposed in the jack housing, and a turbine gear rotatably disposed in the jack housing and meshing with the worm gear. A threaded hole is provided through the center of the turbine gear, and a lead screw is threadedly engaged with the threaded hole. The two ends of the worm gear extend outside the jack housing. The left end of the worm gear of the left screw jack is connected to the drive component 22, and the right end of the worm gear is connected to the first transmission shaft 23. The left end of the worm gear of the right screw jack is also connected to the first transmission shaft 23. In this structure, when the drive component 22 operates, the worm gear of the left screw jack rotates and drives the first transmission shaft 23 to rotate. The rotation of the first transmission shaft 23 drives the worm gear in the right screw jack to rotate, so that the lead screws in the two screw jacks rise or fall synchronously.
[0026] Specifically, the gate assembly 6 includes a gate clamp 61 connected to the crossbeam 5 and an adjusting gate 62 connected to the bottom of the gate clamp 61.
[0027] Specifically, the reversing transmission structure 71 is a spiral bevel gear reversing transmission.
[0028] In specific implementation, the structure of the spiral bevel gear reversing drive is common knowledge to those skilled in the art. Taking the placement of the reversing drive structure 71 below as an example, it is briefly described. The reversing drive structure 71 mainly includes a reversing drive housing, a vertically arranged first bevel gear, and a horizontally arranged second bevel gear meshing with the upper end of the first bevel gear. The left side of the first bevel gear is fixedly connected to the first connecting shaft, and the upper end face of the second bevel gear is fixedly connected to the second connecting shaft. The left side of the first connecting shaft passes through the reversing drive housing and is connected to the right side of the spiral lifting mechanism. The top of the second connecting shaft passes through... The reversing drive housing is connected to the universal coupling 72 below. The reversing drive structure 71, which is placed upside down at the top, has the same structure, so it will not be described in detail. When the handwheel 74 is turned, the driving force of the handwheel 74 is transmitted to the second drive shaft 73 after being repositioned by the reversing drive structure 71 at the top, and then to the reversing drive structure 71 below. The reversing drive structure 71 below then reverses the driving force and transmits it to the worm in the right screw jack. Similarly, the worm in the left screw jack rotates synchronously under the drive of the first drive shaft 23, so that the lead screws in the two screw jacks rise and fall synchronously.
[0029] Specifically, the adjustment accuracy range of the linear displacement sensor 8 used to control the lifting height of the regulating gate 62 is [0, 0.05] mm. The types of linear displacement sensors 8 in the prior art are already quite sophisticated. Taking a resistive (potentiometer-type) displacement sensor as an example, the bottom of the housing is fixedly connected to the transmission bracket 1 via a bracket, and the sensor's moving shaft is rigidly connected to the object being measured (limiting rod 4). The linear movement of the limiting rod 4 drives the shaft to extend and retract, thereby monitoring the lifting height of the gate assembly 6.
[0030] Specifically, the lifting range of the limit switch 9 used to limit the lifting height of the regulating gate 62 is [0, 1200] mm.
[0031] This invention addresses the problems of traditional structures being bulky and lacking sufficient adjustment precision. It utilizes a parallel variable frequency motor and handwheel 74 to support dual-mode electric / manual control, along with a limit switch 9 and linear displacement sensor 8 to achieve precise control of the gate's lifting and lowering via a lower transmission system. This solves the problems of traditional structures being space-consuming, complex to maintain, and lacking precise adjustment capabilities, significantly improving glass forming quality and production efficiency.
[0032] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A lower transmission system for a regulating gate at the inlet of a tin bath in float glass production, characterized in that, It includes two control structures, and either control structure includes: Two parallel transmission supports; An electric drive mechanism includes a lifting structure disposed above any one of the transmission supports, a drive member connected to the drive end of one of the lifting structures, and a first transmission shaft that drives the two lifting structures; the lifting column in the lifting structure moves up and down in the lifting structure under the drive of the drive member. The lower ends of the two support sleeves are respectively connected to the two lifting columns, and the bottoms of the two support sleeves are connected by a limiting rod. A crossbeam, the two ends of which are respectively connected to the tops of the two supporting sleeves; A gate assembly is disposed at the center of the crossbeam; The manual drive mechanism includes a reversing transmission structure connected to the driven end of the lifting structure (which does not have the driving component), a second transmission shaft connected to the reversing transmission structure via a universal coupling, and a handwheel connected to the second transmission shaft in sequence via a universal coupling and the reversing transmission structure; the lifting column in the lifting structure moves up and down in the lifting structure under the driving force transmitted by the rotation of the handwheel. A linear displacement sensor, wherein the fixed end of the linear displacement sensor is fixedly connected to the transmission bracket near the manual drive mechanism, and the movable end of the linear displacement sensor is connected to the limiting rod; The limit switch assembly includes a travel limit rod disposed on the side of the limit rod and two limit switches symmetrically disposed at both ends of the travel limit rod.
2. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The transmission support adopts a rectangular frame, and the bottom of the transmission support is connected by anchor bolts. The center of the transmission support is provided with a first through column, and the outer diameter of the first through column matches the outer diameter of the lifting column.
3. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The lifting structure is a screw jack; the lifting column is a lead screw that is threaded into the inner cavity of the turbine in the screw jack; the driving component is a variable frequency motor that is connected to the worm gear in the screw jack.
4. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The gate assembly includes a gate clamp connected to the crossbeam and an adjusting gate connected to the bottom of the gate clamp.
5. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The reversing transmission structure is a spiral bevel gear reversing transmission.
6. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The linear displacement sensor used to control the lifting height of the regulating gate has an adjustment accuracy range of [0, 0.05] mm.
7. The lower transmission system for the regulating gate at the inlet of the tin bath in float glass as described in claim 1, characterized in that: The lifting range of the limit switch used to limit the lifting height of the regulating gate is [0, 1200] mm.