Cowshed ceiling capable of stretching out and drawing back automatically

Abstract

The utility model discloses an automatic telescopic cowshed ceiling which comprises supporting columns, a cross beam, a sliding base, a movable steel frame, soft heat preservation shed cloth, a driving motor, a transmission shaft, a control double-screw rod, a worm, a worm gear, a nut adjusting mechanism, an auxiliary connecting rod, an external sensor and an internal sensor. The supporting columns are fixed to the ground surface, rail grooves are formed in the two ends of the cross beam, the sliding bases are slidably installed in the rail grooves, the movable steel frames are connected between the sliding bases in a bridging mode, the soft heat preservation shed cloth is sewn to the tops of the movable steel frames, and the movable steel frames are connected through auxiliary connecting rods to form a linkage mechanism. The double screws are controlled to drive a transmission shaft to rotate through a driving motor, synchronous driving is achieved through meshing of a worm and a worm gear, worm gear transmission has a self-locking function, and the ceiling is kept fixed after being unfolded or folded. The nut adjusting mechanism is matched with the C-shaped internal thread sleeve through an adjusting sliding block, synchronous movement of the sliding seats is guaranteed, and the position of the sliding seat at the end can be manually adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to automatic retractable ceiling technical field, concretely relates to a kind of automatic retractable cowshed ceiling. BACKGROUND

[0002] Cowshed is the special building for feeding dairy cows or beef cattle in modern breeding industry, and reasonable cowshed design can not only provide comfortable growth environment for cattle group, but also effectively improve breeding efficiency. At present, the ceiling of cowshed is mainly used for sheltering wind and rain, adjusting temperature and preventing the influence of external environment on cattle group. The traditional cowshed ceiling mostly adopts fixed structure, and although this structure can play basic shielding role, it is often difficult to adjust flexibly in different seasons or weather conditions. For example, in summer high-temperature weather, fixed ceiling is easy to cause poor air circulation and high temperature in shed, thereby affecting the comfort and growth of cattle; and in winter or severe weather conditions, fixed ceiling may not effectively prevent wind and rain, affecting the heat preservation performance of cowshed.

[0003] At present, some retractable cowshed ceilings also appear on the market to adapt to different climate conditions, but the existing retractable ceilings still have some problems in use. For example, part of the retracting mechanism relies on manual operation, and the adjustment process is relatively cumbersome, and is limited by the response speed of manual operation, so it is difficult to adjust quickly according to real-time weather changes. In addition, although some retractable ceilings driven by electric drive improve the adjustment efficiency to a certain extent, there is still room for improvement in the structure design. For example, in the process of unfolding or shrinking, the transmission mode of part of the existing mechanism is out of sync, which causes uneven stress when the ceiling is unfolded or shrunk, thereby affecting the service life. In addition, the existing control mechanism has certain deficiencies in locking function, and when the ceiling is unfolded or shrunk to the position, the position may be deviated due to external force, affecting the stability and safety of the ceiling. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims to provide a kind of cowshed ceiling of automatic retractable, it can realize, through external inductor real-time detection weather condition, and control drive motor drive transmission system, make ceiling can be unfolded or shrunk automatically. At the same time, the device adopts the transmission mode of worm and worm wheel, realizes self-locking function, ensures that the ceiling remains stable after unfolding or shrinking;Through the cooperation of double screw and slide, the synchronism in the process of ceiling extension and retraction is improved, so that the stress is more uniform, thereby improving the service life. In addition, the design of nut adjusting mechanism enables the user to manually adjust the slide position when necessary to adapt to different cowshed sizes and environmental requirements, improving the flexibility and convenience of overall use.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The utility model provides an automatic telescopic cowshed roof, including support column, support column is fixed vertically on the ground, and the top between same side two support columns is fixed with crossbeam, the both sides of crossbeam are symmetrically opened and are equipped with track groove, a plurality of slide blocks are uniformly slidably installed on the upper surface of crossbeam, the both ends of slide block are slid in the inboard of track groove, the slide block in the middle is kept fixed, and the mobile steel frame is crossed above between the two slide blocks corresponding to each other, a plurality of mobile steel frame top are sewed with soft heat -preserving shed cloth, the outside of mobile steel frame is provided with fixed peg, and the surface of two fixed pegs is hingedly connected with auxiliary connecting rod, and a plurality of auxiliary connecting rods are hingedly connected with each other, the both ends of the side of crossbeam are symmetrically provided with extension plate, and the control double screw is rotatably installed between two extension plates, the inboard of two slide blocks in the end is below bolted with nut adjusting mechanism, and the nut adjusting mechanism is screwed on the control double screw.

[0007] Further, the nut adjusting mechanism includes a fixed block fixed to the inboard of the slide block below, the fixed block is located between the control double screw and the crossbeam, and a sliding groove is vertically formed on the surface of the fixed block.

[0008] Further, an extrusion double screw is vertically rotatably installed inside the sliding groove, the extrusion double screw protrudes below the surface of the fixed block, and a knob is provided at the bottom of the extrusion double screw.

[0009] Further, two adjusting sliding blocks are symmetrically slidably installed inside the sliding groove, the two adjusting sliding blocks are respectively screwed on different threaded surfaces of the extrusion double screw, and a C-shaped internal thread sleeve is provided at one side of the adjusting sliding block.

[0010] Further, the two C-shaped internal thread sleeves are respectively located above and below the control double screw, and the C-shaped internal thread sleeves are symmetrically distributed.

[0011] Further, the two C-shaped internal thread sleeves are combined into an internal thread sleeve that is adapted to the surface thread of the control double screw.

[0012] Further, a transmission shaft is transversely rotatably installed at the central position between the two crossbeams, the transmission shaft is vertically distributed with the control double screw, one of the crossbeams is fixed with a drive motor outside, the transmission shaft is installed at one end of the output end of the drive motor, and the transmission shaft is located below the control double screw.

[0013] Further, a worm wheel is installed at the center of the surface of the control double screw, a worm is symmetrically provided at both ends of the transmission shaft, and both ends of the worm are respectively engaged with two worm wheels.

[0014] Further, an external inductor is fixed at one end of the crossbeam, and the external inductor is connected with the control system of the drive motor.

[0015] Further, a plurality of the mobile steel frame lower surface center is provided with an inner inductor, the inductor is used for monitoring the temperature and humidity in the cowshed.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] The utility model discloses a real -time monitoring of environmental parameters adopts the external inductor, including illumination intensity, temperature, humidity, wind speed and precipitation condition, and will gather the data transmission to control system to the operation state of intelligent adjustment drive motor, realizes the automatic unfolding or shrinkage of ceiling. Through this intelligent control system, the ceiling can be accurately adjusted according to the actual weather condition, avoid the hysteresis of manual operation, improve the timeliness and accuracy of adjustment, ensure that the internal environment of cowshed is always in the suitable state, thereby promote the comfort of the cattle herd, and reduce the production loss caused by environmental mutation.

[0018] The utility model discloses a telescopic mechanism adopts drive motor to drive transmission shaft rotation, and through the meshing transmission of both ends worm and worm wheel, realize the synchronous drive of control double screw. The meshing mode of worm and worm wheel not only can realize synchronous motion, also have self -locking function, can keep fixed state after the ceiling unfolding or shrinkage, prevent the accidental movement or loosening of ceiling caused by external wind force or cowshed internal airflow disturbance. The structure design improves the stability of system, makes the ceiling can keep reliable operation state under various climatic conditions.

[0019] The utility model discloses control double screw and slide between adopting nut adjusting mechanism, this mechanism passes through the combination of adjusting sliding block and C type inner thread sleeve, makes slide accurate matching with control double screw, ensures synchronous movement when driving, and can adjust the position of slide by artificial, to adapt to the size requirement of different cowshed. The design of this adjusting mechanism not only improves the accuracy of ceiling telescopic process, also enhances the adaptability of equipment in different application scenarios, improves the overall flexibility and convenient use.

[0020] The utility model discloses mobile steel frame structure adopts auxiliary connecting rod linkage design, when the outermost mobile steel frame moves, can drive inside mobile steel frame synchronous unfolding or shrinkage through auxiliary connecting rod when moving, make the ceiling uniform stress in the operation process, avoid the deformation or damage caused by unilateral stress too big. The structure design optimizes stress distribution, improves the stability of overall system, prolongs the service life of equipment, and ensures that the ceiling always keeps smooth running state in the telescopic process.

[0021] The soft heat preservation shed cloth adopts PVC coating cloth material, has waterproof, windproof, ultraviolet resistance and heat preservation performance, and can provide effective environmental regulation function under different climate conditions. Through the automatic telescopic function, the soft heat preservation shed cloth can be partially contracted under high temperature weather, increase the ventilation effect of the cowshed, and be fully unfolded under cold or severe weather to provide good heat preservation protection, ensure the stability of the internal environment of the cowshed, improve the health level of the cattle herd, and reduce the loss of animal husbandry caused by severe weather.

[0022] The inner inductor is installed on the lower surface of the movable steel frame, can monitor the temperature and humidity data in the cowshed in real time, and transmits the data to the control system, so that the system can intelligently adjust the opening and closing state of the ceiling in combination with external environment data, further optimize the air circulation and temperature and humidity balance in the cowshed. The intelligent control of the system not only reduces manual intervention, improves the adjustment accuracy, but also reduces energy consumption, improves the automation level of the cowshed, and helps the modernization development of animal husbandry. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an unfolded three-dimensional structure schematic view of the utility model;

[0024] Figure 2 It is a skeleton structure schematic view of the utility model;

[0025] Figure 3 It is a transmission structure schematic view of the utility model;

[0026] Figure 4 It is a movable steel frame structure schematic view of the utility model;

[0027] Figure 5 It is a slide and fixed block installation structure schematic view of the utility model;

[0028] Figure 6 It is a C type internal thread sleeve and fixed block structure schematic view of the utility model.

[0029] In the drawings, the component list represented by each sign is as follows:

[0030] 1, support column; 2, cross beam; 21, track groove; 22, extension plate; 3, sliding block; 4, movable steel frame; 41, fixed bolt; 5, inner inductor; 6, auxiliary connecting rod; 7, soft heat preservation shed cloth; 8, control double screw; 81, worm wheel; 9, driving motor; 19, transmission shaft; 11, worm; 12, external inductor; 13, fixed block; 131, sliding groove; 14, extruded double screw; 141, knob; 15, adjusting sliding block; 16, C type internal thread sleeve. DETAILED DESCRIPTION

[0031] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model and does not strictly limit the protection scope of the utility model specifically requested.

[0032] Example 1: Reference Figures 1-6 As shown in the figure, an automatic telescopic cowshed roof, including support column 1, support column 1 is vertically fixed to the ground, support column 1 adopts Q235B carbon steel material, to ensure enough bearing capacity and wind resistance; the top between the same side two support columns 1 is fixed with crossbeam 2, the both sides of crossbeam 2 are symmetrically provided with track groove 21, track groove 21 adopts numerical control cutting forming, to ensure precision and reduce friction resistance;The upper surface of crossbeam 2 is uniformly slidably provided with a plurality of sliding seats 3, the both ends of sliding seat 3 are slidably arranged in the inner side of track groove 21, sliding seat 3 is made of high-strength aluminum alloy 6061-T6, to reduce weight and improve corrosion resistance, wherein the sliding seat 3 placed in the middle is fixed, the two sliding seats 3 corresponding to each other are transversely provided with movable steel frame 4, movable steel frame 4 is welded by galvanized steel pipe with a thickness of 2mm, to improve structural strength and prevent rust after long-term use;The top of a plurality of movable steel frames 4 is sewn with soft heat preservation shed cloth 7, the soft heat preservation shed cloth 7 adopts PVC coated cloth material, has waterproof, windproof, ultraviolet resistance and good heat preservation effect, and the thickness is 0.5mm;The outer side of movable steel frame 4 is provided with fixed bolt 41, fixed bolt 41 adopts 304 stainless steel material, to ensure that the connection stability will not be affected by rust during long-term use;The surface of the two fixed bolts 41 connected is hingedly provided with auxiliary connecting rod 6, the auxiliary connecting rod 6 is made of high-strength engineering plastic, to reduce self-weight and improve weather resistance, a plurality of auxiliary connecting rods 6 are hingedly connected to each other, and wear-resistant brass bushings are used at the hinged parts to reduce wear;The both ends of the side of crossbeam 2 close to each other are symmetrically provided with extension plate 22, extension plate 22 is cut and welded by steel plate with a thickness of 5mm, to provide stable connection support, control double screw 8 is rotatably installed between the two extension plates 22, control double screw 8 adopts T10 grade ball screw with a diameter of 20mm, to ensure stable transmission and high-precision adjustment capacity, the inner side of the two sliding seats 3 placed at the end is rotatably provided with nut adjusting mechanism, the nut adjusting mechanism is screwed on control double screw 8, to ensure that the movement stroke of the end sliding seat 3 can be accurately adjusted when the roof is unfolded or retracted.

[0033] Reference Figure 5 And Figure 6As shown, the nut adjusting mechanism includes a fixed block 13 fixed below the inner side of the sliding seat 3, which is placed between the control double screw 8 and the cross beam 2, and is made of QT500-7 nodular cast iron to ensure no deformation and good wear resistance during long-term use. A sliding groove 131 is vertically formed on the surface of the fixed block 13 and is precisely machined by CNC to ensure smooth sliding of the adjusting assembly.

[0034] Referring to Figure 5 As shown, the extrusion double screw 14 is vertically rotatably installed inside the sliding groove 131 and protrudes below the lower surface of the fixed block 13. The extrusion double screw 14 is made of 42CrMo steel to ensure high strength and wear resistance. The bottom of the extrusion double screw 14 is provided with a knob 141 made of ABS high-strength plastic and designed with anti-slip texture to improve the feel and accuracy during operation.

[0035] Referring to Figure 5 As shown, the adjusting sliding blocks 15 are symmetrically and slidably installed inside the sliding groove 131. The adjusting sliding blocks 15 are made of self-lubricating copper alloy to reduce friction and prolong service life. The two adjusting sliding blocks 15 are respectively screwed on different threaded surfaces of the extrusion double screw 14. The adjusting sliding blocks 15 are provided with C-shaped internal threaded sleeves 16 on one side. The C-shaped internal threaded sleeves 16 are made of POM engineering plastic to reduce weight and improve corrosion resistance.

[0036] Referring to Figure 1 and Figure 5 As shown, the two C-shaped internal threaded sleeves 16 are respectively placed above and below the control double screw 8. The C-shaped internal threaded sleeves 16 are produced by precise injection molding process to ensure precise matching with the threads on the surface of the control double screw 8. The C-shaped internal threaded sleeves 16 are symmetrically distributed to ensure uniform stress during transmission and improve the stability of the overall mechanism.

[0037] Referring to Figure 1 and Figure 5 As shown, the two C-shaped internal threaded sleeves 16 are combined into an internal threaded sleeve that is adapted to the threads on the surface of the control double screw 8 to ensure that the most end sliding seat 3 can be synchronously driven to move during the rotation of the control double screw 8, so as to realize precise adjustment of the expansion or contraction of the ceiling.

[0038] Referring to Figures 1-3As shown, the transmission shaft 10 is transversely rotatably mounted at the center between the two cross beams 2, the transmission shaft 10 is made of 45# steel and is subjected to high-frequency quenching treatment to improve wear resistance and fatigue strength, the transmission shaft 10 is vertically distributed with the control double screw 8, one of the cross beams 2 is fixed with a drive motor 9 outside, the drive motor 9 selects a servo motor with a power of 750W and a rated speed of 1500rpm, the drive motor 9 adjusts its output speed through a precision control system to ensure the stable rotation of the transmission shaft 10, one end of the transmission shaft 10 is mounted on the output end of the drive motor 9, and the transmission shaft 10 is placed below the control double screw 8.

[0039] Referring to Figure 3 As shown, the control double screw 8 is provided with a worm gear 81 at the center of the surface, the worm gear 81 is made of high-strength tin bronze to improve wear resistance and reduce energy consumption during long-term operation, the transmission shaft 10 is symmetrically provided with a worm 11 at both ends, the worm 11 is made of 42CrMo alloy steel and is subjected to carburizing quenching treatment to improve surface hardness and reduce wear rate, the two end worms 11 are respectively engaged with the two worm gears 81, the transmission mode of the worm 11 and the worm gear 81 ensures the self-locking function, thereby maintaining the stability of the ceiling after expansion or contraction, preventing loosening or deviation caused by external force.

[0040] Referring to Figure 1 And Figure 2 As shown, one end of the cross beam 2 is fixed with an external inductor 12, the external inductor 12 is a multifunctional environment detection sensor with a model of AM2301, which can monitor the light intensity, temperature, humidity, wind speed and rain state in real time, and is connected with the control system of the drive motor 9 to realize the intelligent automatic control function.

[0041] Referring to Figure 4 Figure 4 As shown, the internal inductor 5 is mounted at the center of the lower surface of the plurality of movable steel frames 4, the internal inductor 5 is a high-precision temperature and humidity sensor SHT31, the internal inductor 5 is used to monitor the temperature and humidity in the cowshed, and the data of the internal inductor 5 is transmitted to the control system in real time through wireless communication, so as to adjust the expansion or contraction state of the ceiling according to the change of temperature and humidity in and outside the shed, thereby optimizing the environmental conditions in the cowshed and improving the comfort and growth efficiency of the cattle herd.

[0042] Embodiment 2: The embodiment provides an intelligent control system based on automatic adjustment of environmental parameters. The system monitors the external environment of the cowshed in real time through external sensors, including light intensity, temperature, humidity, wind speed, and precipitation conditions. The external sensor uses a high-precision multifunctional environmental detection sensor with model AM2301. The sensor accuracy is ±0.3℃ (temperature) and ±3%RH (humidity), and it can work normally in an environment of -40℃ to 80℃. The data collected by the sensor is transmitted to the central control unit through a wireless radio frequency communication module (RF433). The control unit is built-in STM32F407 processing chip, which can calculate the environmental change trend in real time and control the start and stop of the drive motor. The drive motor selects a 750W servo motor with a rated speed of 1500rpm, which is accurately controlled through PWM (pulse width modulation). When the detected temperature is higher than 28℃ or the humidity is lower than 40%RH, the control system drives the motor to start, making the top part shrink to increase the ventilation effect inside the cowshed. When the wind speed is greater than 5m / s or the raindrops last for more than 30 seconds, the control system quickly instructs the motor to run at full speed, making the top fully expand to provide protection from wind and rain. Through the intelligent automatic control system, the adaptability of the cowshed environment is improved, ensuring that the cow herd can maintain a good growth environment under different climate conditions.

[0043] Embodiment 3: The embodiment provides a stable transmission system based on the self-locking mechanism of worm and worm gear. The system drives the transmission shaft to rotate through the drive motor, making the two ends of the transmission shaft rotate synchronously, and the worm engages with the worm gear to realize the synchronous rotation of the double screw. The worm is made of 42CrMo alloy steel and is treated by carburizing and quenching (hardness HRC58-62) to improve wear resistance and fatigue resistance. The worm gear is made of tin bronze (CuSn10Pb10) material, which has excellent anti-friction and wear resistance. The worm gear diameter is 120mm, and the worm modulus is 2.5. The worm and worm gear transmission structure can realize self-locking function while transmitting power, that is, when the top is expanded or shrunk to the target position, even if external force acts on the moving steel frame, it will not cause position deviation or looseness. The embodiment utilizes the mechanical self-locking characteristics of worm and worm gear to effectively improve the stability of the top, ensuring that it can remain fixed in strong wind environment, avoiding accidental shrinkage or expansion of the top due to external force, and further improving the safety and service life of the equipment.

[0044] Embodiment 4: The embodiment provides a screw nut adjusting mechanism of an adjustable sliding seat, which is used to optimize the matching of the sliding seat and the control double screw, and to adapt to the size requirements of different cowsheds through manual adjustment function. The screw nut adjusting mechanism is composed of a fixed block, an extrusion double screw, an adjusting sliding block and a C-shaped internal threaded sleeve. The fixed block is made of QT500-7 nodular cast iron to enhance the compression resistance and wear resistance. A sliding groove is vertically provided in the inside of the fixed block, and an extrusion double screw with M10x1.5 precision ball screw thread is installed in the sliding groove. The extrusion double screw is connected with an ABS anti-skid knob at the bottom, and the knob has a diameter of 50 mm for easy manual operation. Two adjusting sliding blocks made of self-lubricating alloy copper (CuAl10Fe5Ni5) are respectively screwed on different threaded surfaces of the extrusion double screw. When the extrusion double screw is rotated, the two adjusting sliding blocks will move closer or farther away from each other, thereby realizing the loosening or locking control of the sliding seat. The C-shaped internal threaded sleeve is made of POM engineering plastic, which can accurately match the thread shape of the control double screw to ensure that there is no loosening or slipping phenomenon during transmission. Through the optimization of the screw nut adjusting mechanism, the transmission accuracy of the control double screw is improved, the sliding seat can move synchronously more stably, and the introduction of the manual adjustment function also improves the applicability of the ceiling in different cowshed structures.

[0045] Embodiment 5: The embodiment provides a linkage type auxiliary connecting rod structure, which is used to optimize the stress distribution during the extension and retraction of the ceiling, and to avoid deformation or damage caused by excessive local stress. The movable steel frame is connected with the auxiliary connecting rod through a fixed bolt, and the auxiliary connecting rod is made of Q345B low-alloy high-strength steel with a single diameter of 12 mm. A brass wear-resistant bushing is provided at the connection to ensure that it is not easy to loosen or wear during long-term operation. When the outermost movable steel frame moves under the action of the driving motor, it will drive the inner movable steel frame to move synchronously through the pulling of the auxiliary connecting rod, so that the entire ceiling is evenly stressed. In this embodiment, the maximum bearing capacity of each auxiliary connecting rod can reach 500 N, and when the ceiling is fully expanded, the auxiliary connecting rod can ensure that all the movable steel frames inside are synchronized, avoiding frame distortion or local deformation caused by excessive unilateral stress. This embodiment optimizes the structural design of the movable steel frame, making the extension and retraction of the ceiling more stable, reducing fatigue damage caused by uneven stress during long-term use, and improving the durability of the entire device.

[0046] Embodiment 6: This embodiment provides a high-performance soft thermal insulation shed cloth. The shed cloth uses PVC-coated cloth with a thickness of 0.5mm, and has the characteristics of waterproof, windproof, and ultraviolet resistance (UV blocking rate > 95%). It can provide reliable protection in extreme weather conditions. The edges of the shed cloth use a double-layer heat sealing process to improve the tear resistance (tear strength > 1200N / m). The shed cloth is fixed on the mobile steel frame by 304 stainless steel buckles, ensuring that it will not loosen during long-term use. In high-temperature weather, the control system will control the degree of shed cloth deployment according to the ambient temperature. For example, when the temperature exceeds 32℃, the roof will retract by 50% to increase the ventilation effect inside the cowshed; when the temperature is lower than 10℃, the roof will be fully deployed to maintain the heat preservation effect of the cowshed. This embodiment uses high-performance soft thermal insulation shed cloth combined with intelligent control to achieve precise environmental regulation, improve the stability of the internal temperature of the cowshed, and reduce the health risks of the cattle herd caused by extreme weather.

[0047] Embodiment 7: This embodiment provides an intelligent adjustment system based on temperature and humidity monitoring. The system uses SHT31 high-precision temperature and humidity sensors with a measurement accuracy of ±0.2℃ (temperature) and ±2%RH (humidity), which can monitor the temperature and humidity data inside the cowshed in real time. The sensor is installed on the lower surface of the mobile steel frame and transmits data to the central control unit through a 2.4GHz wireless communication module (ESP8266). The central control unit integrates internal and external environmental data to optimize the expansion or contraction state of the roof. This embodiment realizes dynamic adjustment of the internal environment of the cowshed through the introduction of the temperature and humidity monitoring system, ensuring that the cattle herd is always in a suitable growth environment, improving the breeding efficiency and the intelligent level of animal husbandry.

[0048] The working principle of the utility model is as follows: the external sensor 12 at the end detects the weather conditions, including light, temperature, humidity, wind power, rain, etc., and transmits the detected information to the control system of the driving motor 9 to control whether the driving motor 9 is started. When the driving motor 9 is started, it will drive the transmission shaft 10 to rotate, in turn, the two ends of the worm 11 will be driven to rotate synchronously. The meshing of the worm 11 and the worm gear 81 can drive the control double screw 8 on both sides to rotate synchronously and in the same direction. At the same time, the transmission of the worm 11 and the worm gear 81 can realize self-locking, keeping fixed after the roof is expanded or contracted. The rotation of the control double screw 8 can drive the end slide 3 to move through the cooperation with the nut adjusting mechanism. The synchronous movement of the two outermost slide 3 can drive the outermost mobile steel frame 4 to move, in turn, realizing the expansion or folding of the soft thermal insulation shed cloth 7. When the outermost mobile steel frame 4 moves, the auxiliary connecting rod 6 can make it pull the inner mobile steel frame 4 to move, in turn, ensuring that the roof is evenly stressed when it is expanded.

[0049] The nut adjusting mechanism can conveniently adjust the cooperation between the most end slide 3 and the control double screw 8. Since the two adjusting sliders 15 are respectively screwed on the different threaded surfaces of the extrusion double screw 14, when the extrusion double screw 14 is rotated through the knob 141, the two adjusting sliders 15 can be controlled to move close to or away from each other. When the two adjusting sliders 15 move close to each other, the cooperation with the control double screw 8 can be achieved. At this time, the rotation of the control double screw 8 can drive the most end slide 3 to move. Conversely, when the two adjusting sliders 15 move away from each other, the cooperation with the control double screw 8 is not achieved. At this time, the most end slide 3 can be manually pulled to move relatively to adjust the unfolding or folding distance of the two ends.

[0050] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. An automatic retractable cowshed roof, comprising a support column (1), characterized in that: the support column (1) is vertically fixed to the ground surface, and two support columns (1) on the same side are fixed with a cross beam (2) at the top; the cross beam (2) is symmetrically provided with a track groove (21) on both sides, and a plurality of sliding seats (3) are uniformly and slidably installed on the upper surface of the cross beam (2); the sliding seats (3) are slid on the inner sides of the track grooves (21), and the sliding seats (3) in the middle are fixed; two corresponding sliding seats (3) are transversely provided with a movable steel frame (4); a plurality of movable steel frames (4) are provided with soft heat preservation shed cloth (7) at the top; the movable steel frame (4) is provided with a fixed bolt (41) on the outer side, and two fixed bolts (41) are hingedly connected with an auxiliary connecting rod (6); a plurality of auxiliary connecting rods (6) are hingedly connected with each other; the cross beam (2) is symmetrically provided with an extension plate (22) at both ends of one side close to each other, and a control double screw (8) is rotatably installed between the two extension plates (22); the inner sides of the two endmost sliding seats (3) are provided with a nut adjusting mechanism through bolts, and the nut adjusting mechanism is screwed on the control double screw (8). The nut adjusting mechanism comprises a fixed block (13) fixed to the inner side of the sliding seat (3), the fixed block (13) is arranged between the control double screw (8) and the cross beam (2), and the surface of the fixed block (13) is vertically provided with a sliding groove (131). The sliding groove (131) is vertically rotatably installed with an extrusion double screw (14) inside, the extrusion double screw (14) exceeds the lower surface of the fixed block (13), and the extrusion double screw (14) is provided with a knob (141) at the bottom. The sliding groove (131) is symmetrically slidably installed with an adjusting sliding block (15) inside, two adjusting sliding blocks (15) are screwed on different thread surfaces of the extrusion double screw (14) respectively, and one side of the adjusting sliding block (15) is provided with a C-shaped internal thread sleeve (16). Two C-shaped internal thread sleeves (16) are arranged above and below the control double screw (8) respectively, and the C-shaped internal thread sleeves (16) are symmetrically distributed. Two C-shaped internal thread sleeves (16) are combined into an internal thread sleeve matched with the thread on the surface of the control double screw (8). A transmission shaft (10) is transversely rotatably installed between the center positions of two cross beams (2), the transmission shaft (10) is vertically distributed with the control double screw (8), one side of the cross beam (2) is fixed with a drive motor (9), one end of the transmission shaft (10) is installed on the output end of the drive motor (9), and the transmission shaft (10) is arranged below the control double screw (8).

2. The automatically retractable cowshed ceiling according to claim 1, characterized in that: The control double screw (8) is provided with a worm wheel (81) at the center of the surface, the transmission shaft (10) is symmetrically provided with a worm (11) at both ends, and the two worm (11) are meshed with two worm wheels (81) respectively.

3. The automatically retractable cowshed ceiling according to claim 2, characterized in that: One end of the cross beam (2) is fixed with an external sensor (12), and the external sensor (12) is connected with the control system of the drive motor (9).

4. The automatically retractable cowshed ceiling according to claim 3, characterized in that: ​ 5. The automatic retracting cowshed roof according to claim 4, characterized in that: ​ 6. The automatic retracting cowshed roof according to claim 5, characterized in that: ​ 7. The automatic retracting barn roof of claim 1, wherein: ​ 8. The automatic retracting cowshed roof according to claim 7, characterized in that: ​ 9. The automatic retracting barn roof of claim 1, wherein: ​ 10. The automatic retracting barn roof of claim 1, wherein: A plurality of said mobile steel frame (4) lower surface center is equipped with inner inductor (5), said inner inductor (5) is used for monitoring the temperature and humidity in the cowshed.

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