Detachable telescopic steel bar protective shed

The removable telescopic steel bar protective shed designed with transmission and locking parts solves the problem of inflexible design of traditional protective sheds, achieves rapid expansion and contraction and convenient movement, and improves construction efficiency and stability.

CN223241126UActive Publication Date: 2025-08-19CHINA CONSTR FIFTH ENG DIV CORP LTD
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Patent Information

Application Number
CN202421878757.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-05
Publication Date
2025-08-19
Estimated Expiration
2034-08-05

AI Technical Summary

Technical Problem

The design of traditional steel bar yard protective sheds lacks flexibility and is difficult to meet the needs of different construction projects. It takes a long time to expand or expand, and the stability and wind resistance are insufficient.

Method used

A detachable telescopic steel bar protective shed is designed, and the transmission device is used to control the frame body one and frame body two to fold or retract at the same time, combining the sliding platform and locking parts to achieve rapid expansion or contraction, and convenient movement through the walking wheel.

Benefits of technology

It improves the work efficiency of the construction site, saves operating time and production costs, and enhances the stability and movement convenience of the trellis.

✦ Generated by Eureka AI based on patent content.

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Abstract

The detachable telescopic steel bar protective shed comprises a plurality of stand columns, a shed frame, rainproof cloth and reinforcing steel, the stand columns are symmetrically distributed on the two sides of the bottom of the shed frame, fixed steel columns are fixedly installed on the tops of the stand columns, the bottom of the shed frame is in sliding connection with the tops of the fixed steel columns, and the reinforcing steel is fixedly installed between the stand columns. The rainproof cloth is fixedly installed on the top of the shed frame, the shed frame is composed of a first frame body and a second frame body which are symmetrically arranged, a transmission device is further arranged on the fixed steel column, the side wall of the joint of the first frame body and the second frame body is connected with the transmission device, the bottom of the joint of the first frame body and the second frame body is connected with a sliding platform, and the sliding platform is in sliding connection with the fixed steel column. The transmission device is used for controlling the first frame body and the second frame body to be folded or stretch towards the two sides at the same time, through the design, stretching of the shed frame can be achieved, the two frame bodies are controlled to move at the same time, and working efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction facilities, in particular to a detachable and retractable steel bar protective shed. Background Art

[0002] In today's construction industry, rebar, a primary building material, is crucial for its processing, storage, and protection. With the continuous advancement of rebar processing technology and the expansion of construction scale, the demand for rebar processing and storage on construction sites is increasing. However, traditional protective sheds for rebar storage sites have numerous shortcomings in their design and use.

[0003] Traditional steel bar yard protective sheds usually adopt a fixed design. The differences in different construction projects and construction environments have put forward different requirements for steel bar yard protective sheds. However, traditional protective sheds lack flexibility in design and are difficult to adapt to the needs of different construction projects. Some protective sheds are equipped with a folding method, most of which are retracted by ground rollers. This type of retractable protective shed lacks stability and has weak wind resistance. At the same time, it adopts a one-sided push-pull method to fold, which takes a long time to retract or unfold, reducing work efficiency.

[0004] The purpose of the utility model is to provide a detachable and retractable steel bar protection shed to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides a detachable and retractable steel bar protective shed, comprising a plurality of columns, a shed frame, a rainproof cloth, and reinforcing steel. The plurality of columns are symmetrically distributed on both sides of the bottom of the shed frame, and fixed steel columns are fixedly installed on the tops of the plurality of columns. The bottom of the shed frame is slidably connected to the tops of the fixed steel columns. The reinforcing steel is fixedly installed between each of the columns, and the rainproof cloth is fixedly installed on the top of the shed frame.

[0006] The scaffolding is composed of a symmetrically arranged frame body 1 and a frame body 2, and a transmission device is also provided on the fixed steel column. The side walls of the junction of the frame body 1 and the frame body 2 are connected to the transmission device, and the bottom of the junction of the frame body 1 and the frame body 2 is connected to a sliding platform, and the sliding platform is slidably connected to the fixed steel column. The frame body 1 and the frame body 2 each include a plurality of vertical supports and horizontal supports, and the vertical supports are slidably connected to the fixed steel column. The horizontal supports are installed between the vertical supports on the symmetrical columns, and the adjacent vertical supports and adjacent horizontal supports on the same side are movably connected by telescopic fork arms. The vertical supports are symmetrically arranged on both sides of the transmission device, and the transmission device is used to control the frame body 1 and the frame body 2 to fold or telescope to both sides at the same time.

[0007] As a further improvement of the present invention, the transmission device includes an annular chain, a sprocket, and a support frame. The sprocket is meshed with the inside of both ends of the annular chain, and the two sides of the sprocket are rotatably connected to the support frame through a connecting shaft. The bottom of the support frame is fixedly installed on the top of the fixed steel column, and the chain centers at the upper and lower ends of the annular chain are respectively connected to one end of the frame body 2 and the frame body 1. Push rods are provided on the frame body 1 and the frame body 2, and the push rods are detachably connected to the column.

[0008] As a further improvement of the present invention, the opposite side of the bottom of the symmetrical vertical bracket is rotatably connected to a roller through a connecting shaft, and the fixed steel column is provided with a guide rail for the roller to roll. The vertical bracket at the connecting end of the frame one and the frame two is fixedly connected to the sliding platform, and the sliding platform includes a slider and a directional pulley, and the directional pulley is rotatably installed inside the slider, the slider is slidably connected to the fixed steel column, and the directional pulley is rollingly connected to the guide rail, and the opposite side of the sliding platform where the frame one and the frame two are connected is connected and fixed by a locking piece, and the push rod is connected to the locking piece.

[0009] As a further improvement of the present invention, the locking member includes a female joint and a male joint, and the female joint and the male joint are respectively fixedly connected to the top wall on the opposite side of the sliding platform on the frame body one and the frame body two, and the female joint and the male joint are provided with a plug-in block and a plug-in slot on the opposite side, the plug-in block on the female joint and the plug-in slot on the male joint are on the same horizontal line, and the plug-in block on the male joint and the plug-in slot on the female joint are on the same horizontal line, and the male joint and the female joint are provided with an unlocking rod, which is limited and unlocked by the unlocking rod, the push rod fixing rod and the movable rod, the fixing rod is rotatably connected to the outer wall of the female joint or the male joint, the movable rod is connected to the unlocking rod on the female joint or the male joint, the handheld end of the fixing rod is provided with a ring buckle, and the columns connected on both sides of the bottom center of the fixed steel column and the columns at the end of the protective shed are provided with fixing rings that cooperate with the ring buckle.

[0010] As a further improvement of the present invention, the unlocking rod includes a shift rod and a semicircular movable block, and a movable cavity 1 is provided in the center of the opposite side of the female joint and the male joint, and the semicircular movable block is movably arranged in the movable cavity 1. The shift rod extends into the movable cavity 1 and is fixedly connected to the outer wall of the semicircular movable block. A movable cavity 2 is provided inside the female joint and the male joint, and the movable cavity 2 is communicated with the movable cavity 1. A tension spring is provided in the movable cavity, and the two ends of the tension spring are respectively fixedly connected to the movable cavity 2 and the shift rod.

[0011] As a further improvement of the present invention, the upper and lower chain centers of the circular chain are respectively fixedly connected with a fixed block one and a fixed block two, the fixed block one is connected to the frame two, the fixed block two is connected to the frame one, the fixed block one is connected to a connecting column, the top of the connecting column is connected to an extension frame, the extension frame is connected to the frame two, the extension frame is provided with an extension cloth, and the extension cloth covers the rainproof cloth of the frame one and the frame two.

[0012] As a further improvement of the present invention, a fixing frame is symmetrically provided on the fixed steel column, and the fixing frame is arranged close to the sprocket. A support plate is provided between the symmetrical fixing frames, and the support plate is in contact with the upper and lower chains of the circular chain and provides positioning support for the upper and lower chains of the circular chain.

[0013] As a further improvement of the present invention, a walking wheel is provided at the bottom of the column, and a telescopic column is provided on the top of the walking wheel. The telescopic column extends from the bottom of the column and is movably installed inside the column. A limiting column is provided on the outer wall of one end of the telescopic column close to the walking wheel, and a first limiting groove and a second limiting groove are provided at the bottom of the column. The limiting column is limited by the first limiting groove or the second limiting groove, and an extension plate is fixedly installed on the outer wall of the bottom end of the column.

[0014] As a further improvement of the present invention, the movable rod is provided with a sliding rod, the top of the sliding rod is movably connected to the shift rod, a sliding groove is provided on the outer wall of the movable rod on the side opposite to the sliding rod, a compression spring is provided in the sliding groove, a sliding plate fixedly connected to the compression spring is provided on the sliding rod, and a handle is provided on the outer wall of the sliding rod away from the sliding groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model is provided with a transmission device and a frame one and a frame two. Through the transmission device, when the frame one or the frame two is pulled, the two frames can be folded or retracted to both sides at the same time. This design can save operation time when expanding or contracting the scaffolding, and there is no need to expand or contract from both ends of the scaffolding. Furthermore, the cost of producing the protective scaffolding can be saved by manually pulling the scaffolding.

[0017] 2. The utility model is provided with retractable running wheels. When moving the protective shed, first remove the extension plate at the bottom end of the column from the ground, then lift the column to slide the running wheels inside it out, and then rotate the limit column on the telescopic column to make the limit column rotate to the opening of the second limit groove. Under the gravity of the column itself, the limit column enters the second limit groove for limit fixing, thereby causing the running wheels in the column to slide out, which is conducive to subsequently moving the entire protective shed to the desired position without the need for vehicles or manual lifting, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall front view of the utility model;

[0019] Figure 2 This is a top view of the rainproof cloth of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of a single-side column and a transmission device of the present utility model;

[0021] Figure 4 This is a rear separated view of the push rod connected to the female connector of the present invention;

[0022] Figure 5 This is a three-dimensional diagram of the locking member of the present utility model;

[0023] Figure 6 This is a diagram showing the female connector and the male connector being separated;

[0024] Figure 7 This is a cross-sectional view of the locking member of the present utility model;

[0025] Figure 8 This is a schematic diagram of the structure in which the travel wheels of the utility model extend from the column;

[0026] Figure 9 This is a schematic diagram of the structure of the utility model after the traveling wheels are retracted into the pillars;

[0027] Figure 10 This is a front view of the connection between the transmission device and the fixed steel column of the utility model.

[0028] In the figure: 1, column; 101, telescopic column; 102, walking wheel; 103, first limiting groove; 104, second limiting groove; 105, limiting column; 106, extension plate; 107, extension cloth; 108, reinforcing steel; 109, extension frame; 110, fixing ring;

[0029] 2. Scaffolding; 201. Frame 1; 202. Frame 2; 203. Rainproof sheet; 204. Vertical support; 205. Horizontal support; 206. Sliding platform; 207. Roller; 208. Telescopic fork arm;

[0030] 3. Fixed steel column; 301. Guide rail; 302. Fixed frame; 303. Support plate;

[0031] 4. Transmission device; 401. Ring chain; 402. Sprocket; 403. Support frame;

[0032] 5. Push rod; 501. Fixed rod; 502. Movable rod; 503. Sliding rod; 504. Slide groove; 505. Compression spring; 506. Buckle;

[0033] 6. Locking part; 601. Female connector; 602. Male connector; 603. Connecting block; 604. Connecting slot; 605. Push rod; 606. Semicircular movable block; 607. Movable cavity 1; 608. Movable cavity 2; 609. Tension spring. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] The present invention will be described in further detail below with reference to the accompanying drawings. Example 1

[0037] See also Figure 1-10 The utility model provides a detachable and retractable steel bar protective shed, comprising a plurality of columns 1, a scaffolding 2, a rainproof cloth 203, and a reinforcing steel 108. The plurality of columns 1 are symmetrically distributed on both sides of the bottom of the scaffolding 2. A fixed steel column 3 is fixedly installed on the top of the plurality of columns 1. The bottom of the scaffolding 2 is slidably connected to the top of the fixed steel column 3. The reinforcing steel 108 is fixedly installed between each of the columns 1, and the rainproof cloth 203 is fixedly installed on the top of the scaffolding 2.

[0038] The scaffolding 2 is composed of a symmetrically arranged frame 1 201 and a frame 2 202. A transmission device 4 is also provided on the fixed steel column 3. The side walls of the connection between the frame 1 201 and the frame 2 202 are connected to the transmission device 4. The bottom of the connection between the frame 1 201 and the frame 2 202 is connected to a sliding platform 206. The sliding platform 206 is slidably connected to the fixed steel column 3. The frame 1 201 and the frame 2 202 each include a plurality of vertical brackets 204 and horizontal brackets. The vertical bracket 205 is slidably connected to the fixed steel column 3, and the horizontal bracket 205 is installed between the vertical brackets 204 on the symmetrical columns 1. The adjacent vertical brackets 204 and the adjacent horizontal brackets 205 on the same side are movably connected by telescopic fork arms 208. The vertical brackets 204 are symmetrically arranged on both sides of the transmission device 4, and the transmission device 4 is used to control the frame 1 201 and the frame 2 202 to fold or telescope to both sides at the same time.

[0039] The transmission device 4 includes an annular chain 401, a sprocket 402, and a support frame 403. The sprocket 402 is meshed with the inside of the two ends of the annular chain 401. The two sides of the sprocket 402 are rotatably connected to the support frame 403 through a connecting shaft. The bottom of the support frame 403 is fixedly installed on the top of the fixed steel column 3. The chain centers of the upper and lower ends of the annular chain 401 are respectively connected to one end of the frame body 2 202 and the frame body 1 201. Both the frame body 1 201 and the frame body 2 202 are provided with a push rod 5, and the push rod 5 is detachably connected to the column 1.

[0040] The symmetrical vertical bracket 204 is symmetrically connected to a roller 207 on the opposite side of the bottom through a connecting shaft. The fixed steel column 3 is provided with a guide rail 301 for the roller 207 to roll. The vertical bracket 204 at the connecting end of the frame 1 201 and the frame 2 202 is fixedly connected to the sliding platform 206. The sliding platform 206 includes a slider and a directional pulley. The directional pulley is rotatably installed inside the slider. The slider is slidably connected to the fixed steel column 3. The directional pulley is rollingly connected to the guide rail 301. The opposite side of the sliding platform 206 where the frame 1 201 and the frame 2 202 are connected is connected and fixed by a locking member 6, and the push rod 5 is connected to the locking member 6.

[0041] The upper and lower chain centers of the circular chain 401 are respectively fixedly connected with a fixed block 1 and a fixed block 2, the fixed block 1 is connected to the frame 2 202, the fixed block 2 is connected to the frame 1 201, the fixed block 1 is connected to a connecting column, the top of the connecting column is connected to an extension frame 109, the extension frame 109 is connected to the frame 2 202, and the extension frame 109 is provided with an extension cloth 107, the extension cloth 107 covers the rainproof cloth 203 of the frame 1 201 and the frame 2 202. By designing the extension cloth 107, the sealing of the connection between the frame 1 201 and the frame 2 202 can be improved when the scaffolding 2 is unfolded to prevent rain leakage and improve the sealing of the scaffolding 2.

[0042] The fixed steel column 3 is also symmetrically provided with a fixing frame 302, and the fixing frame 302 is arranged close to the sprocket 402. A support plate 303 is provided between the symmetrical fixing frames 302. The support plate 303 fits the upper and lower chains of the circular chain 401 and positions and supports the upper and lower chains of the circular chain 401.

[0043] When in use, pulling the push rod 5 on frame 1 201 or frame 202 causes the sliding platform 206 to slide on the guide rail 301 of the fixed steel column 3 under the action of the directional pulley and unfold multiple vertical brackets 204 and horizontal brackets 205. The rollers 207 on the vertical bracket 204 roll in the guide rail 301. When one of the frames moves, the other frame is driven to move relatively together under the action of the circular chain 401. Furthermore, a fixed frame 302 and a support plate 303 are provided on the fixed steel column 3. The support plate 303 guides and supports the upper and lower chains of the circular chain 401, which can improve the stability of the frame during movement. Through the transmission device 4, when pulling frame 1 201 or frame 2 202, the two frames can be folded or retracted to both sides at the same time. This design can save operation time when unfolding or retracting the scaffold 2, and there is no need to unfold or retract from both ends of the scaffold 2. Further, manually pulling the scaffold 2 can save the production cost of the protective scaffold 2. Example 2

[0044] See also Figure 3 、 Figure 5 、 Figure 6 、 Figure 7The locking member 6 includes a female connector 601 and a male connector 602, and the female connector 601 and the male connector 602 are fixedly connected to the top wall of the opposite side of the sliding platform 206 on the frame body 1 201 and the frame body 2 202 respectively. The opposite side of the female connector 601 and the male connector 602 are both provided with a plug-in block 603 and a plug-in slot 604. The plug-in block 603 on the female connector 601 and the plug-in slot 604 on the male connector 602 are on the same horizontal line, and the plug-in block 603 on the male connector 602 and the plug-in slot 604 on the female connector 601 are on the same horizontal line. Both the male connector 602 and the female connector 601 are provided with unlocking rods, which are used for limiting and unlocking. The push rod 5 fixes the rod 501 and the movable rod 502. The fixed rod 501 is rotatably connected to the outer wall of the female connector 601 or the male connector 602. The movable rod 502 is connected to the unlocking rod on the female connector 601 or the male connector 602. The handheld end of the fixed rod 501 is provided with a ring buckle 506. The columns 1 connected on both sides of the bottom center of the fixed steel column 3 and the columns 1 at the first end of the protective shed are provided with fixing rings 110 that cooperate with the ring buckle 506.

[0045] The unlocking rod includes a lever 605 and a semicircular movable block 606. A movable cavity 1 607 is provided in the center of the opposite side of the female connector 601 and the male connector 602. The semicircular movable block 606 is movably arranged in the movable cavity 1 607. The lever 605 extends into the movable cavity 1 607 and is fixedly connected to the outer wall of the semicircular movable block 606. A movable cavity 2 608 is provided inside the female connector 601 and the male connector 602. The movable cavity 2 608 is communicated with the movable cavity 1 607. A tension spring 609 is provided in the movable cavity. The two ends of the tension spring 609 are respectively fixedly connected to the movable cavity 2 608 and the lever 605.

[0046] The movable rod 502 is provided with a sliding rod 503, the top of the sliding rod 503 is movably connected to the shift rod 605, a sliding groove 504 is provided on the outer wall of the movable rod 502 on the side opposite to the sliding, a compression spring 505 is provided in the sliding groove 504, a sliding plate fixedly connected to the compression spring 505 is provided on the sliding rod 503, and a handle is provided on the outer wall of the end of the sliding rod 503 away from the sliding groove 504.

[0047] When in use, after the frame 1 201 and the frame 202 are unfolded, the sliding platform 206 connected to the two is inserted into the plug-in slot 604 on the opposite side through the plug-in block 603 on the female connector 601 and the male connector 602 respectively. At this time, the semicircular movable block 606 in the female connector 601 and the male connector 602 is pushed into the movable cavity 1 607. When the semicircular movable block 606 is pushed, the lever 605 connected to it is pushed outward, and the tension spring 609 is stretched until the plug-in block 603 is fully inserted into the plug-in slot 6 04, the semicircular movable groove is released from the restriction, and under the action of the rebound force of the tension spring 609, the semicircular movable block 606 is restored to the initial state to lock and fix the female connector 601 and the male connector 602, thereby realizing the connection and fixation of the frame 1 201 and the frame 2 202. In this embodiment, the initial state of the semicircular movable block 606 is inclined, and a part of it extends out of the movable cavity 1 607. When the female connector 601 and the male connector 602 are plugged and fixed, the female connector 601 and the male connector 602 are locked. The extended part of the semicircular movable block 606 on the female connector 601 enters the movable cavity 1 607 of the other party, thereby achieving locking. When the sliding rod 503 connected to the lever 605 on the female connector 601 is pulled downward or the sliding rod 503 connected to the male connector 602 pushes the lever 605 upward, the semicircular movable block 606 rotates around the axis and disengages from the movable cavity 1 607 of the other party, thereby achieving unlocking between the female connector 601 and the male connector 602. The sliding rod 503 connected to the lever 605 on the female connector 601 The positions of the rod 503 and the spring connecting the sliding rod 503 connected to the male joint 602 are opposite, the compression spring 505 of the movable rod 502 on the female joint 601 is fixedly connected to the bottom inner wall of the movable groove, and the compression spring 505 of the movable rod 502 on the male joint 602 is fixedly connected to the top inner wall of the movable groove, which is convenient for the sliding rod 503 to pull and push up. Through the above design, when the scaffolding 2 is unfolded, the frame 1 201 and the frame 2 202 can be fixedly connected together, thereby increasing the stability between the two. Example 3

[0048] See also Figure 4 A walking wheel 102 is provided at the bottom of the column 1, and a telescopic column 101 is provided on the top of the walking wheel 102. The telescopic column 101 extends from the bottom of the column 1 and is movably installed inside the column 1. A limiting column 105 is provided on the outer wall of one end of the telescopic column 101 close to the walking wheel 102. A first limiting groove 103 and a second limiting groove 104 are provided at the bottom of the column 1. The limiting column 105 is limited by the first limiting groove 103 or the second limiting groove 104, and an extension plate 106 is fixedly installed on the outer wall of the bottom end of the column 1.

[0049] In this embodiment, when the protective shed is moved, the bolts on the extension plate 106 at the bottom end of the column 1 are first removed from the ground, and then the column 1 is lifted to slide out the running wheels 102 inside it. Then, by rotating the limiting column 105 on the telescopic column 101, the limiting column 105 is rotated to the opening of the second limiting groove 104. Under the gravity of the column 1 itself, the limiting column 105 enters the second limiting groove 104 for limiting and fixing, thereby causing the running wheels 102 in the column 1 to slide out, which is conducive to subsequently moving the entire protective shed to the desired position without the need for vehicles or manual lifting, thereby improving work efficiency.

[0050] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A detachable and retractable steel bar protective shed, characterized by: The scaffolding comprises a plurality of columns, a scaffolding, a tarpaulin and reinforcement steel, wherein the plurality of columns are symmetrically distributed on both sides of the bottom of the scaffolding, a plurality of fixed steel columns are fixedly installed on the top of the columns, the bottom of the scaffolding is slidably connected to the top of the fixed steel columns, the reinforcement steel is fixedly installed between each of the columns, and the tarpaulin is fixedly installed on the top of the scaffolding; The scaffolding is composed of a symmetrically arranged frame body 1 and a frame body 2, and a transmission device is also provided on the fixed steel column. The side walls of the junction of the frame body 1 and the frame body 2 are connected to the transmission device, and the bottom of the junction of the frame body 1 and the frame body 2 is connected to a sliding platform, and the sliding platform is slidably connected to the fixed steel column. The frame body 1 and the frame body 2 each include a plurality of vertical supports and horizontal supports, and the vertical supports are slidably connected to the fixed steel column. The horizontal supports are installed between the vertical supports on the symmetrical columns, and the adjacent vertical supports and adjacent horizontal supports on the same side are movably connected by telescopic fork arms. The vertical supports are symmetrically arranged on both sides of the transmission device, and the transmission device is used to control the frame body 1 and the frame body 2 to fold or telescope to both sides at the same time.

2. The detachable and retractable steel bar protection shed according to claim 1, characterized in that: The transmission device includes an annular chain, a sprocket, and a support frame. The sprocket is meshed with the inside of both ends of the annular chain. Both sides of the sprocket are rotatably connected to the support frame through a connecting shaft. The bottom of the support frame is fixedly installed on the top of the fixed steel column. The chain centers at the upper and lower ends of the annular chain are respectively connected to one end of the frame body 2 and the frame body 1. Push rods are provided on both the frame body 1 and the frame body 2, and the push rods are detachably connected to the column.

3. The detachable and retractable steel bar protection shed according to claim 2, characterized in that: The symmetrical vertical bracket is symmetrically connected to a roller on the opposite side of the bottom through a connecting shaft, and a guide rail for the roller to roll is provided on the fixed steel column. The vertical bracket at the connecting end of the frame one and the frame two is fixedly connected to the sliding platform, and the sliding platform includes a slider and a directional pulley. The directional pulley is rotatably installed inside the slider, and the slider is slidably connected to the fixed steel column, and the directional pulley is rollingly connected to the guide rail. The opposite side of the sliding platform where the frame one and the frame two are connected is connected and fixed by a locking piece, and the push rod is connected to the locking piece.

4. The detachable and retractable steel bar protection shed according to claim 3 is characterized in that: The locking member includes a female joint and a male joint, and the female joint and the male joint are respectively fixedly connected to the top wall of the opposite side of the sliding platform on the frame body one and the frame body two, and the female joint and the male joint are provided with a plug-in block and a plug-in slot on the opposite side, and the plug-in block on the female joint is on the same horizontal line as the plug-in slot on the male joint, and the plug-in block on the male joint is on the same horizontal line as the plug-in slot on the female joint, and the male joint and the female joint are both provided with an unlocking rod, which is limited and unlocked by the unlocking rod, the push rod fixing rod and the movable rod, the fixing rod is rotatably connected to the outer wall of the female joint or the male joint, the movable rod is connected to the unlocking rod on the female joint or the male joint, and the handheld end of the fixing rod is provided with a ring buckle, and the columns connected on both sides of the bottom center of the fixed steel column and the columns at the end of the protective shed are provided with fixing rings that cooperate with the ring buckle.

5. The detachable and retractable steel bar protection shed according to claim 4, characterized in that: The unlocking lever includes a shift rod and a semicircular movable block. A movable cavity 1 is provided in the center of the opposite side of the female joint and the male joint. The semicircular movable block is movably arranged in the movable cavity 1. The shift rod extends into the movable cavity 1 and is fixedly connected to the outer wall of the semicircular movable block. A movable cavity 2 is provided inside the female joint and the male joint. The movable cavity 2 is communicated with the movable cavity 1. A tension spring is provided in the movable cavity, and the two ends of the tension spring are respectively fixedly connected to the movable cavity 2 and the shift rod.

6. The detachable and retractable steel bar protection shed according to claim 2, characterized in that: The upper and lower chain centers of the circular chain are respectively fixedly connected with a fixed block 1 and a fixed block 2, the fixed block 1 is connected to the frame 2, the fixed block 2 is connected to the frame 1, the fixed block 1 is connected to a connecting column, the top of the connecting column is connected to an extension frame, the extension frame is connected to the frame 2, the extension frame is provided with an extension cloth, and the extension cloth covers the rainproof cloth of the frame 1 and the frame 2.

7. The detachable and retractable steel bar protection shed according to claim 2, characterized in that: The fixed steel column is also symmetrically provided with a fixing frame, which is arranged close to the sprocket. A support plate is provided between the symmetrical fixing frames, which fits the upper and lower chains of the ring chain and positions and supports the upper and lower chains of the ring chain.

8. The detachable and retractable steel bar protection shed according to claim 1, characterized in that: A walking wheel is provided at the bottom of the column, and a telescopic column is provided on the top of the walking wheel. The telescopic column extends from the bottom of the column and is movably installed inside the column. A limiting column is provided on the outer wall of one end of the telescopic column close to the walking wheel. A first limiting groove and a second limiting groove are provided at the bottom of the column. The limiting column is limited by the first limiting groove or the second limiting groove, and an extension plate is fixedly installed on the outer wall of the bottom end of the column.

9. The detachable and retractable steel bar protection shed according to claim 5, characterized in that: The movable rod is provided with a sliding rod, the top of the sliding rod is movably connected to the shift rod, a sliding groove is provided on the outer wall of the movable rod on the side opposite to the sliding rod, a compression spring is provided in the sliding groove, a sliding plate fixedly connected to the compression spring is provided on the sliding rod, and a handle is provided on the outer wall of the sliding rod away from the sliding groove.