Adjustable cage top fence structure

Abstract

The invention relates to the technical field of cage type lifters, and provides an adjustable cage top fence structure which comprises a basic fence unit and a fence extension module, and the fence extension module comprises a plurality of extension fence units. The basic fence unit can be selectively connected with one or more expansion fence units in the horizontal direction. The basic fence unit comprises a first transverse fence baffle, the expansion fence unit comprises a second transverse fence baffle, and the first transverse fence baffle can be connected to different positions of the second transverse fence baffle in the length direction. According to the adjustable cage top fence structure, the universality, the flexibility and the adaptability of the cage top fence structure are improved, equivalently, an integral cage top fence structure is formed by splicing a plurality of fences, and a single fence unit can be conveniently and flexibly conveyed, maintained and replaced.

Description

Technical Field

[0001] This application relates to the field of cage-type elevator technology, and more specifically, to an adjustable cage top railing structure. Background Technology

[0002] Construction hoists, as key vertical transportation equipment in modern construction engineering, are increasingly widely used. With the increasing scale and complexity of construction projects, higher demands are being placed on the safety performance of construction hoists. Because the operating environment of hoists is often complex, especially in special working conditions such as inside shafts, ensuring the safety of construction personnel remains the primary task in design and development.

[0003] Currently, to ensure the safety of workers performing installation and maintenance operations on the top of the hoisting cage, safety railings are commonly installed on the cage top. However, most existing cage top railings adopt an integral welded structure, meaning that the various components of the railing (such as posts, crossbars, guardrails, etc.) are welded together to form an inseparable rigid whole.

[0004] This traditional, monolithic suspended cage roof fence structure has the following significant drawbacks in practical applications: Transportation and relocation are difficult and costly: Because the fence is a single unit, it is large and irregularly shaped. Transporting it to the construction site or transferring it between multiple sites requires valuable space in large transport vehicles, greatly reducing transportation efficiency. At the same time, its hoisting and handling processes are cumbersome, requiring large equipment and a large amount of manpower, which not only makes operation inconvenient but also leads to a significant increase in logistics and labor costs.

[0005] Poor versatility and flexibility: The integral welded structure is non-disassembled and cannot be adjusted in any way. This means that a fence of one specification can only be matched with a specific size of cage, and its size or shape cannot be flexibly adjusted according to actual construction needs. When different sizes of cages are required on the construction site, corresponding specifications of integral fences must be provided, which undoubtedly increases equipment inventory and management costs, severely limits the product's versatility and applicability, and fails to meet the diverse needs of the market. Summary of the Invention

[0006] In view of this, this application provides an adjustable cage top fence structure to solve the technical problem of poor versatility and flexibility of the existing integral cage top fence structure.

[0007] This application provides an adjustable cage top fence structure, wherein the adjustable cage top fence structure includes a basic fence unit and a fence extension module, the fence extension module includes multiple extension fence units, and the basic fence unit can selectively connect one or more extension fence units in the horizontal direction; The basic fence unit includes a first horizontal fence panel, and the extended fence unit includes a second horizontal fence panel. The first horizontal fence panel can be connected to different positions along the length of the second horizontal fence panel.

[0008] Furthermore, the fence extension module connected to the basic fence unit includes multiple extension fence units connected sequentially in the horizontal direction, and a second transverse fence baffle in an adjacent extension fence unit can be connected to different positions in the length direction of another second transverse fence baffle.

[0009] Furthermore, the first transverse fence panel has a first mounting hole at its length end, and the second transverse fence panel has an elongated slot extending along its length end. The first transverse fence panel can be connected to different positions of the elongated slot by threaded fasteners passing through the first mounting hole and the elongated slot.

[0010] Furthermore, the adjustable cage top railing structure includes a supporting base plate and a hoisting mechanism mounted on the supporting base plate. The supporting base plate is detachably connected to the top of the cage. The cage is vertically mounted on a lifting guide frame. A fixed pulley is provided at the top of the lifting guide frame. The hoisting mechanism includes a hoisting motor, a drum connected to the output shaft of the hoisting motor, and a traction rope wound on the drum. One end of the traction rope is supported and limited on the fixed pulley, and the end of the traction rope away from the drum is connected to the bottom of the lifting guide frame. After the supporting base plate is separated from the top of the cage, the hoisting mechanism can drive the adjustable cage top railing structure to rise and fall independently along the lifting guide frame.

[0011] Furthermore, the lifting guide frame is equipped with a fence rail extending in the vertical direction. The fence rail is located on one side of the width direction of the cage. The basic fence unit is provided with guide wheels. The support base plate can be driven by a translation drive device to move horizontally relative to the cage to an offset position, so that the guide wheels can roll against the fence rail.

[0012] Furthermore, the hoisting motor is the translation drive device, and the output shaft of the hoisting motor is also connected to a first gear. The first gear is located on one side of the drum, and a second gear is installed on the support base plate. The support base plate has a through groove, and a rack and a support rail are installed on the top of the cage. The support base plate is slidably supported on the support rail. The first gear meshes with the second gear, and the second gear passes through the through groove and meshes with the rack. The rack extends along the width direction of the cage.

[0013] Furthermore, the support track includes a first horizontal track and a second horizontal track. The first horizontal track has a rectangular cross-section, and the second horizontal track has an upright T-shaped cross-section. The bottom of the support base plate has a first straight groove forming beam that cooperates with the first horizontal track and an inverted T-shaped groove forming beam that cooperates with the second horizontal track. When the support base plate moves to the offset position, the T-shaped groove forming beam separates from the second horizontal track.

[0014] Furthermore, the basic fence unit is provided with a first mounting ear plate and a second mounting ear plate. A rotating shaft passes through the first and second mounting ear plates. The guide wheel is disposed on the rotating shaft and located between the first and second mounting ear plates. An annular locking sleeve is provided on the side of the first and second mounting ear plates facing the guide wheel. The axial end face of the annular locking sleeve is provided with a plurality of spaced locking holes around the axis of the rotating shaft. Locking pin holes are provided on both axial sides of the guide wheel facing the locking holes. A locking pin and a first elastic element are installed in the locking pin hole. The locking pin is connected to the inner wall of the locking pin hole through the first elastic element. The first elastic element applies pressure to the locking pin. An elastic force is applied towards the outer side of the locking pin hole. Sliding covers are installed on both axial sides of the guide wheel. The sliding covers are slidably installed on the guide wheel radially and cooperate with the guide wheel through a second elastic element. When the rotational speed of the guide wheel is less than a predetermined speed, the sliding covers cover the corresponding locking pin hole under the elastic force of the second elastic element. When the rotational speed of the guide wheel is greater than or equal to the predetermined speed, the sliding covers overcome the elastic force of the second elastic element under the action of centrifugal force and slide outward radially along the guide wheel to release the cover of the locking pin hole. This allows the locking pin to extend out of the locking pin hole under the elastic force of the first elastic element and insert into one of the multiple spaced locking holes.

[0015] Furthermore, the fence guide rail is provided with limiting grooves extending vertically on both sides. The first mounting ear plate and the second mounting ear plate are hinged to limiting plates via a vertical hinge shaft. A torsion spring is installed on the vertical hinge shaft. When the guide wheel rolls against the fence guide rail, the torsion spring keeps the end of the corresponding limiting plate in the corresponding limiting groove and does not contact the corresponding limiting groove.

[0016] Furthermore, a pressure plate is hinged to the side of the first and second mounting ears that are opposite to each other. The locking hole extends through the corresponding first and second mounting ears. A trigger rod is installed in each locking hole through a third elastic element. When the locking pin is not inserted into the locking hole, the trigger rod is held in the locking hole by the elastic force of the third elastic element. When the locking pin is not inserted into the locking hole, the locking pin pushes the trigger rod in the inserted locking hole to extend out of the corresponding first or second mounting ear and press against the corresponding pressure plate, so that the pressure plate pushes the corresponding limiting plate to rotate and the end of the corresponding limiting plate presses against the groove surface of the corresponding limiting groove.

[0017] The beneficial effects of the adjustable cage top fence structure provided by this invention are as follows: Compared to existing technologies, the adjustable cage top fence structure provided by this invention has a basic fence unit and a fence extension module. The fence extension module includes multiple extension fence units, and the basic fence unit can selectively connect to one or more extension fence units. Therefore, different numbers of extension fence units can be selected to connect with the basic fence unit to form cage top fence structures of different sizes as needed. Moreover, when the number of selected extension fence units is fixed, the size of the entire adjustable cage top fence structure can be flexibly adjusted by connecting the first horizontal fence baffle to the second horizontal fence baffle at different positions along the length direction. Compared to the traditional integral cage top fence structure, this adjustable cage top fence structure improves the versatility, flexibility, and adaptability of the cage top fence structure. It is equivalent to changing the integral cage top fence structure into multiple fences spliced ​​together, which facilitates flexible transportation, maintenance, and replacement of individual fence units.

[0018] Other beneficial effects of the present invention will be described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of an adjustable cage top railing structure according to an embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial connection diagram of an adjustable cage top fence structure according to an embodiment of this application; Figure 4This is a perspective view of an embodiment of the adjustable cage top railing structure in this application when it is fitted with the top plate of the cage. Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is another perspective view of the adjustable cage top railing structure in one embodiment of this application when it is engaged with the top plate of the cage. Figure 7 for Figure 6 Enlarged view of point C in the middle; Figure 8 This is a partial structural schematic diagram of an adjustable cage top fence structure according to an embodiment of this application; Figure 9 This is a partial structural schematic diagram of an adjustable cage top fence structure according to an embodiment of this application; Figure 10 This is a perspective view of the sliding cover in an adjustable cage top railing structure according to an embodiment of this application; Figure 11 This is a partial view of the sliding cover and guide wheel in an adjustable cage top railing structure according to an embodiment of this application; Figure 12 This is a schematic diagram of another partial engagement between the sliding cover and the guide wheel in an adjustable cage top railing structure according to an embodiment of this application; Figure 13 This is a partial assembly diagram of some components in an adjustable cage top fence structure according to an embodiment of this application; Figure 14 This is a three-dimensional schematic diagram of the adjustable cage top fence structure and fence guide rail according to an embodiment of this application; Figure 15 for Figure 14 Enlarged view of point D in the middle; Figure 16 This is a top view of the adjustable cage top fence structure and fence guide rail according to an embodiment of this application; Figure 17 for Figure 16 Enlarged view of point E in the middle.

[0021] Explanation of reference numerals in the attached figures: 1-Winding motor; 2-Drum; 3-Top plate; 4-First gear; 5-Second gear; 6-Rack; 7-First horizontal rail; 8-Second horizontal rail; 10-First mounting ear plate; 11-Second mounting ear plate; 12-Shaft; 13-Locking pin; 14-First elastic element; 15-Sliding cover; 16-Second elastic element; 19-Vertical hinge shaft; 20-Limiting plate; 21-Pressure plate; 22-Third elastic element; 23-Trigger rod; 24-Inclined surface; 25-Intermediate guardrail; 26-Protective cover; 27-L-shaped support leg; 100-Basic fence unit; 101-First horizontal Fence baffle; 102-First railing frame; 103-First mounting hole; 200-Extended fence unit; 201-Second transverse fence baffle; 202-Second railing frame; 203-Long groove; 300-Intermediate connecting plate; 301-Second mounting hole; 400-Support base plate; 401-Through groove; 402-First straight groove forming beam; 403-T-shaped groove forming beam; 500-Fence guide rail; 501-Limiting groove; 600-Guide wheel; 601-Locking pin hole; 602-First sliding groove; 603-Second sliding groove; 700-Annular lock sleeve; 701-Locking hole. Detailed Implementation

[0022] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. One or more embodiments of this application are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that this application can be implemented in many different forms and is not limited to the embodiments described below.

[0023] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0025] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] See Figures 1 to 3 This application provides an adjustable cage top fence structure, wherein the adjustable cage top fence structure includes a basic fence unit 100 and a fence extension module, the fence extension module includes a plurality of extension fence units 200, and the basic fence unit 100 can selectively connect one or more extension fence units 200 in the horizontal direction. The basic fence unit 100 includes a first horizontal fence baffle 101, and the extended fence unit 200 includes a second horizontal fence baffle 201. The first horizontal fence baffle 101 can be connected to different positions along the length of the second horizontal fence baffle 201. Specifically, the basic fence unit 100 includes a first railing frame 102, and the first horizontal fence baffle 101 can be connected to the bottom end of the first railing frame 102. The extended fence unit 200 includes a second railing frame 202, and the second horizontal fence baffle 201 can be connected to the bottom end of the second railing frame 202. The basic fence unit 100 and the extended fence unit 200 can enclose the operating space on the top of the cage.

[0027] The adjustable cage top fence structure provided by this invention has a basic fence unit 100 and a fence extension module. The fence extension module includes multiple extension fence units 200. The basic fence unit 100 can selectively connect one or more extension fence units 200. Therefore, different numbers of extension fence units 200 can be selected to connect with the basic fence unit 100 to form cage top fence structures of different sizes as needed. Moreover, when the number of selected extension fence units 200 is determined, the size of the entire adjustable cage top fence structure can be flexibly adjusted by connecting the first horizontal fence baffle 101 to different positions in the length direction of the second horizontal fence baffle 201. Compared with the traditional integral cage top fence structure, this adjustable cage top fence structure improves the versatility, flexibility and adaptability of the cage top fence structure. It is equivalent to changing the integral cage top fence structure to be spliced ​​from multiple fences, which facilitates flexible transportation, maintenance and replacement of individual fence units.

[0028] According to one embodiment of the present invention, the fence extension module connected to the basic fence unit 100 includes a plurality of extension fence units 200 connected sequentially in the horizontal direction, and a second transverse fence baffle 201 in an adjacent extension fence unit 201 can be connected to different positions in the length direction of another second transverse fence baffle 201.

[0029] According to a specific embodiment of this application, the first transverse fence baffle 101 has a first mounting hole 103 at its longitudinal end, and the second transverse fence baffle 201 has an elongated slot 203 extending along its longitudinal direction at its longitudinal end. Preferably, there are multiple parallel-spaced slots 203. The number and position of the first mounting holes 103 match the number and position of the elongated slots 203. The first transverse fence baffle 101 can be connected to different positions of the elongated slots 203 by threaded fasteners (e.g., bolts and nuts) passing through the first mounting holes 103 and the elongated slots 203. If it is necessary to connect one of the adjacent extended fence units 200... To connect one second horizontal fence panel 201 to different positions along the length of another second horizontal fence panel 201, an intermediate connecting plate 300 can be added. The intermediate connecting plate 300 has second mounting holes 301 at both ends in the horizontal direction. An intermediate guardrail 25 is provided on the intermediate connecting plate 300. The two ends of the first horizontal fence panel 101 are connected to different positions in the long groove 203 by threaded fasteners (such as bolts and nuts) that pass through the second mounting holes 301 and the corresponding long groove 203 of the second horizontal fence panel 201. In this way, two adjacent second horizontal fence panels 201 can be detachably connected.

[0030] See Figures 4 to 17According to one embodiment of this application, the adjustable cage top railing structure includes a support base plate 400 and a hoisting mechanism mounted on the support base plate 400. The support base plate 400 is detachably connected to the top of the cage. The cage is vertically mounted on a lifting guide frame. A fixed pulley is provided at the top of the lifting guide frame. The hoisting mechanism includes a hoisting motor 1, a drum 2 connected to the output shaft of the hoisting motor 1, and a traction rope wound on the drum 2. One end of the traction rope is supported and limited on the fixed pulley, and the end of the traction rope away from the drum 2 is connected to the bottom of the lifting guide frame. After the support base plate 400 is separated from the top of the cage, the hoisting mechanism can drive the adjustable cage top railing structure independently along the lifting guide frame. The advantage of this embodiment is that, under normal circumstances, the adjustable cage top railing structure is fixed to the top of the cage. The cage moves up and down along the lifting guide frame through its own cage lifting drive system, thereby driving the adjustable cage top railing structure to move up and down. When the cage lifting drive system malfunctions, or when the cage and the lifting guide frame become stuck or malfunction, the support base plate 400 can be separated from the top of the cage, allowing the adjustable cage top railing structure to move up and down independently. This ensures that the operators on the support base plate 400 can continue to work. An openable and closable door can also be opened on the support base plate 400 to facilitate personnel inside the cage to climb onto the support base plate 400.

[0031] According to one embodiment of this application, a vertically extending fence rail 500 is installed on the lifting guide frame. The fence rail 500 is located on one side of the width direction of the cage. A guide wheel 600 is provided on the basic fence unit 100. The support base plate 400 can be driven by a translation drive device to move horizontally relative to the cage to an offset position, so that the guide wheel 600 can roll against the fence rail 500. In addition, the support base plate 400 can be driven by a translation drive device to move horizontally relative to the cage to an initial position directly above the cage. In the initial position, the support base plate 400 can be connected to the top of the cage by a detachable component, for example, by bolts passing through a first threaded hole on the support base plate 400 and a second threaded hole on the top plate 3 of the cage.

[0032] According to one embodiment of this application, the hoisting motor 1 is a translation drive device. The output shaft of the hoisting motor 1 is also connected to a first gear 4, which is located on one side of the drum 2. A second gear 5 is installed on the support base plate 400, which has a through groove 401. A rack 6 and a support rail are installed on the top of the cage (top plate 3). The support base plate 400 is slidably supported on the support rail. The first gear 4 meshes with the second gear 5, and the second gear 5 passes through the through groove 401 and meshes with the rack 6. Strip 6 extends along the width of the cage. The advantage of this embodiment is that the winch motor 1 serves as the power source for the lifting and lowering movement of the adjustable cage top fence structure and the horizontal movement of the support base plate 400, thereby improving the utilization rate of components. In the limited space on the support base plate 400, the arrangement and installation of unnecessary additional components are reduced, thereby improving the space utilization rate. A protective cover 26 can also be installed on the support base plate 400, which covers the upper port of the through groove 401 and the first gear 4 and the second gear 5.

[0033] According to one embodiment of this application, the support track includes a first horizontal track 7 and a second horizontal track 8. The first horizontal track 7 has a rectangular cross-section, and the second horizontal track 8 has an upright T-shaped cross-section. The bottom of the support base plate 400 has a first straight groove forming beam 402 that cooperates with the first horizontal track 7 and an inverted T-shaped groove forming beam 403 that cooperates with the second horizontal track 8. When the support base plate 400 moves to the offset position, the T-shaped groove forming beam 403 separates from the second horizontal track 8. A stop end plate is provided at the end of the second horizontal track 8 away from the lifting guide frame. When the support base plate 400 is driven by the translation drive device and moves horizontally relative to the cage to the initial position directly above the top plate 3 of the cage, the T-shaped groove forming beam 403 is just stopped by the stop end plate.

[0034] According to one embodiment of this application, a first mounting ear plate 10 and a second mounting ear plate 11 are provided on the basic fence unit 100. The first mounting ear plate 10 and the second mounting ear plate 11 can be specifically installed (welded or detachably connected) on the first railing frame 102. Preferably, there are two fence guide rails 500, which correspond to two guide wheels 600 and two sets of first mounting ear plates 10 and second mounting ear plates 11. A rotating shaft 12 is passed through the first mounting ear plate 10 and the second mounting ear plate 11. The guide wheel 600 is disposed on the rotating shaft 12 and located between the first mounting ear plate 10 and the second mounting ear plate 11. An annular locking sleeve 700 is provided on the side of the first mounting ear plate 10 and the second mounting ear plate 11 facing the guide wheel 600. The rotating shaft 12 passes through the annular locking sleeve. The inner side of the guide wheel 600 is spaced apart from the inner side of the annular locking sleeve 700. The axial end face of the annular locking sleeve 700 is provided with a plurality of spaced locking holes 701 around the axis of the rotating shaft 12. Locking pin holes 601 are provided on both axial sides of the guide wheel 600 facing the locking holes 701. A locking pin 13 and a first elastic element 14 (e.g., a spring) are installed in the locking pin holes 601. The locking pin 13 is connected to the inner wall of the locking pin hole 601 through the first elastic element 14. The first elastic element 14 applies an elastic force to the locking pin 13 towards the outer side of the locking pin hole 601. Sliding covers 15 are installed on both axial sides of the guide wheel 600. The sliding covers 15 are slidably installed on the guide wheel 600 radially and cooperate with the guide wheel 600 through a second elastic element 16 (e.g., a spring). Specifically, see [link to documentation]. Figure 8 , Figures 10 to 12The axial end face of the guide wheel 600 is provided with two first sliding grooves 602. Each first sliding groove 602 is connected to a second sliding groove 603 perpendicular to the first sliding groove 602. The sliding cover 15 has two L-shaped support legs 27. Each L-shaped support leg 27 is slidably limited in the corresponding first sliding groove 602 and second sliding groove 603 along the radial direction of the guide wheel 600. The L-shaped support legs 27 are connected to the groove wall of the second sliding groove 603 through the second elastic element 16. When the rotational speed of the guide wheel 600 is less than the predetermined speed, the sliding cover 15 seals the corresponding locking pin hole 601 under the elastic force of the second elastic element 16. When the rotational speed of the guide wheel 600 is greater than or equal to the predetermined speed, the sliding cover 15 overcomes the elastic force of the second elastic element 16 under the action of centrifugal force and slides outward along the radial direction of the guide wheel 600 to release the seal on the locking pin hole 601, so that the locking pin 13 can be released by the elastic force of the first elastic element 14. Under the action of the locking pin 13, the guide wheel 600 extends out of the locking pin hole 601 and inserts into one of the multiple spaced locking holes 701. Due to the possible malfunction during the lifting and lowering process of the adjustable cage top fence structure driven by the hoisting motor 1, the speed of the adjustable cage top fence structure rising or falling exceeds the safe speed. At this time, the rotation speed of the guide wheel 600 is greater than or equal to the predetermined rotation speed. Under the elastic force of the first elastic element 14, the locking pin 13 extends out of the locking pin hole 601 and inserts into one of the multiple spaced locking holes 701, which can lock the guide wheel 600. The guide wheel 600 cannot rotate, thus changing the original rolling cooperation between the guide wheel 600 and the fence guide rail 500 to a sliding friction cooperation. This can play a certain "braking" role on the entire adjustable cage top fence structure, thereby reducing the speed of the adjustable cage top fence structure rising or falling.

[0035] According to one embodiment of this application, the fence guide rail 500 is provided with limiting grooves 501 extending in the vertical direction on both sides. The first mounting ear plate 10 and the second mounting ear plate 11 are hinged to the limiting plate 20 through the vertical hinge shaft 19. A torsion spring is installed on the vertical hinge shaft 19. When the guide wheel 600 rolls against the fence guide rail 500, the torsion spring keeps the end of the corresponding limiting plate 20 in the corresponding limiting groove 501 and does not contact the corresponding limiting groove 501.

[0036] According to one embodiment of this application, a pressure plate 21 is hinged to the side of the first mounting ear plate 10 and the second mounting ear plate 11 that are opposite to each other. A locking hole 701 extends through the corresponding first mounting ear plate 10 and the corresponding second mounting ear plate 11. A trigger rod 23 is installed in each locking hole 701 via a third elastic element 22 (e.g., a spring). When the locking pin 13 is not inserted into the locking hole 701, the trigger rod 23 is held in the locking hole 701 by the elastic force of the third elastic element 22. When the locking pin 13 is not inserted into the locking hole 701, the locking pin 13 pushes the trigger rod 23 inserted into the locking hole 701 to extend out of the corresponding first mounting ear plate 10 or second mounting ear plate 11. The ear plate 11 presses against the corresponding pressure plate 21, so that the pressure plate 21 pushes the corresponding limiting plate 20 to rotate, and the end of the corresponding limiting plate 20 presses against the bottom surface of the corresponding limiting groove 501. Preferably, the end of the limiting plate 20 has an inclined surface 24. When the inclined surface 24 rotates with the limiting plate 20 to be parallel to the bottom surface of the limiting groove 501, it presses against the bottom surface of the limiting groove 501. In this embodiment, by pressing the end of the limiting plate 20 against the bottom surface of the corresponding limiting groove 501, plus the sliding friction cooperation between the guide wheel 600 and the fence guide rail 500 mentioned above, the "braking" effect on the entire adjustable cage top fence structure is enhanced.

[0037] It should be noted that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting this application. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this application, such as combining different features in various embodiments, and these should all fall within the protection scope of this application.

Claims

1. An adjustable cage top railing structure, characterized in that, The adjustable cage top fence structure includes a basic fence unit and a fence extension module. The fence extension module includes multiple extension fence units, and the basic fence unit can selectively connect one or more extension fence units in the horizontal direction. The basic fence unit includes a first horizontal fence panel, and the extended fence unit includes a second horizontal fence panel. The first horizontal fence panel can be connected to different positions along the length of the second horizontal fence panel.

2. The adjustable cage top railing structure according to claim 1, characterized in that, The fence extension module connected to the basic fence unit includes multiple extension fence units connected sequentially in the horizontal direction, and a second transverse fence baffle in an adjacent extension fence unit can be connected to different positions in the length direction of another second transverse fence baffle.

3. The adjustable cage top railing structure according to claim 1, characterized in that, The first transverse fence panel has a first mounting hole at its length end, and the second transverse fence panel has a long groove extending along its length end. The first transverse fence panel can be connected to different positions of the long groove by threaded fasteners passing through the first mounting hole and the long groove.

4. The adjustable cage top railing structure according to claim 1, characterized in that, The adjustable cage top railing structure includes a supporting base plate and a hoisting mechanism mounted on the supporting base plate. The supporting base plate is detachably connected to the top of the cage. The cage is vertically mounted on a lifting guide frame. A fixed pulley is provided at the top of the lifting guide frame. The hoisting mechanism includes a hoisting motor, a drum connected to the output shaft of the hoisting motor, and a traction rope wound on the drum. One end of the traction rope is supported and limited on the fixed pulley, and the end of the traction rope away from the drum is connected to the bottom of the lifting guide frame. After the supporting base plate is separated from the top of the cage, the hoisting mechanism can drive the adjustable cage top railing structure to rise and fall independently along the lifting guide frame.

5. The adjustable cage top railing structure according to claim 4, characterized in that, The lifting guide frame is equipped with a fence rail extending in the vertical direction. The fence rail is located on one side of the width direction of the cage. The basic fence unit is provided with guide wheels. The support base plate can be driven by a translation drive device to move horizontally relative to the cage to an offset position so that the guide wheels can roll against the fence rail.

6. The adjustable cage top railing structure according to claim 5, characterized in that, The winch motor is the translation drive device. The output shaft of the winch motor is also connected to a first gear. The first gear is located on one side of the drum. A second gear is installed on the support base plate. The support base plate has a through groove. A rack and a support rail are installed on the top of the cage. The support base plate is slidably supported on the support rail. The first gear meshes with the second gear. The second gear passes through the through groove and meshes with the rack. The rack extends along the width direction of the cage.

7. The adjustable cage top railing structure according to claim 6, characterized in that, The support track includes a first horizontal track and a second horizontal track. The first horizontal track has a rectangular cross-section, and the second horizontal track has an upright T-shaped cross-section. The bottom of the support base plate has a first straight groove forming beam that cooperates with the first horizontal track and an inverted T-shaped groove forming beam that cooperates with the second horizontal track. When the support base plate moves to the offset position, the T-shaped groove forming beam separates from the second horizontal track.

8. The adjustable cage top fence structure according to claim 7, characterized in that, The basic fence unit is provided with a first mounting ear plate and a second mounting ear plate. A rotating shaft passes through the first and second mounting ear plates. A guide wheel is disposed on the rotating shaft and located between the first and second mounting ear plates. An annular locking sleeve is provided on the side of the first and second mounting ear plates facing the guide wheel. The axial end face of the annular locking sleeve is provided with a plurality of spaced locking holes around the axis of the rotating shaft. Locking pin holes are provided on both axial sides of the guide wheel facing the locking holes. A locking pin and a first elastic element are installed in the locking pin hole. The locking pin is connected to the inner wall of the locking pin hole through the first elastic element. The first elastic element applies an axial locking force to the locking pin. The elastic force on the outer side of the pin hole; sliding covers are installed on both sides of the guide wheel along the axial direction; the sliding covers are slidably installed on the guide wheel along the radial direction of the guide wheel and cooperate with the guide wheel through the second elastic element; when the rotational speed of the guide wheel is less than the predetermined speed, the sliding covers cover the corresponding locking pin hole under the elastic force of the second elastic element; when the rotational speed of the guide wheel is greater than or equal to the predetermined speed, the sliding covers overcome the elastic force of the second elastic element under the action of centrifugal force and slide outward along the radial direction of the guide wheel to release the cover of the locking pin hole, so that the locking pin extends out of the locking pin hole under the elastic force of the first elastic element and inserts into one of the multiple spaced locking holes.

9. The adjustable cage top railing structure according to claim 8, characterized in that, The fence guide rail has vertically extending limiting grooves on both sides. The first mounting ear plate and the second mounting ear plate are hinged to the limiting plate by a vertical hinge shaft. A torsion spring is installed on the vertical hinge shaft. When the guide wheel rolls against the fence guide rail, the torsion spring keeps the end of the corresponding limiting plate in the corresponding limiting groove and does not contact the corresponding limiting groove.

10. The adjustable cage top railing structure according to claim 9, characterized in that, A pressure plate is hinged to one side of the first mounting ear plate and the second mounting ear plate that are opposite to each other. The locking hole extends through the corresponding first mounting ear plate and the second mounting ear plate. A trigger rod is installed in each of the locking holes through a third elastic element. When the locking pin is not inserted into the locking hole, the trigger rod is held in the locking hole by the elastic force of the third elastic element. When the locking pin is not inserted into the locking hole, the locking pin pushes the trigger rod in the inserted locking hole to extend out of the corresponding first mounting ear plate or the second mounting ear plate and press against the corresponding pressure plate, so that the pressure plate pushes the corresponding limiting plate to rotate and the end of the corresponding limiting plate presses against the groove surface of the corresponding limiting groove.

Images