Protection device for steel structure
By designing a protective device suitable for steel structures, the problem that existing devices can only be used on a single size has been solved, achieving effective protection and ensuring coating quality on steel structures of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2026-04-03
AI Technical Summary
Existing protective devices can only be used on steel structures of a single size, and cannot be adapted to steel structures of different sizes, affecting the quality and safety of the coating.
A protective device was designed, comprising a steel structure main body, a protective housing, a threaded sleeve, a one-way screw, a linkage cross plate, a linkage block, and an L-shaped clamping plate. Through linkage and clamping structures, it can adapt to steel structure surfaces of different sizes, ensuring the smooth progress of the spraying process.
It achieves effective protection on steel structures of different sizes, prevents accidental contact during spraying, and enhances the practicality and safety of the device.
Smart Images

Figure CN224072369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a protective device, specifically a protective device for steel structures, and belongs to the field of steel structure technology. Background Technology
[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates, and employs rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The various components are typically connected by welds, bolts, or rivets. Due to their light weight and simple construction, they are widely used in large factories, stadiums, high-rise buildings, bridges, and other fields.
[0003] In some work scenarios using steel structures, it is often necessary to spray paint on the surface of steel structures of different sizes for identification purposes, depending on the specific circumstances. After spraying, a certain amount of time is required for curing. During this period, the steel structure needs to be protected to prevent passing workers from touching it and affecting the quality of the spraying. However, general protective devices can only be used on steel structures of a single size, which is quite limited. Therefore, we provide a protective device for steel structures to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a protective device for steel structures in order to solve the above-mentioned problems.
[0005] This utility model is achieved through the following technical solution: a protective device for steel structures, comprising a steel structure body and a protective housing, wherein a threaded sleeve is rotatably connected to the inner wall of the protective housing, the inner wall of the threaded sleeve is threadedly connected to the outer circumferential surface of a one-way lead screw, a linkage cross plate is fixedly connected to one end of the one-way lead screw, the linkage cross plate is slidably connected to a groove in a linkage block via a control track, an L-shaped clamping plate is fixedly connected to one side of the linkage block, and an anti-slip pad is fixedly connected to one side of the L-shaped clamping plate. The tightness between the components can effectively protect the surface of the steel structure body.
[0006] Preferably, there are two linkage blocks, and the two linkage blocks are slidably connected to the inner wall of the protective shell by means of a limiting support bar. The installation of the protective shell can effectively control the position inside.
[0007] Preferably, a position control and recovery housing is fixedly connected to the bottom of the protective housing, and a component support housing is fixedly connected to one side of the position control and recovery housing. The component support housing can effectively ensure the stability of the unidirectional worm gear during rotation.
[0008] Preferably, the inner wall of the component supporting the outer shell is rotatably connected to a one-way worm gear, and one end of the one-way worm gear is fixedly connected to an external turntable. The external turntable facilitates the rotation of the one-way worm gear by the operator.
[0009] Preferably, the thread on the outer circumferential surface of the unidirectional worm gear meshes with the teeth on the outer circumferential surface of the planar worm wheel, and the inner wall of the planar worm wheel is fixedly connected to the outer circumferential surface of the winding rod. The winding rod enables the free retraction and extension of the protective curtain.
[0010] Preferably, the outer circumferential surface of the winding rod is rotatably connected to the inner wall of the control and recovery housing, and a protective curtain is fixedly installed on the winding rod. The protective curtain can effectively protect the surface of the main steel structure.
[0011] Preferably, one end of the threaded sleeve is fixedly connected to an external turntable two, and the outer circumferential surface of the external turntable two is provided with anti-slip texture. The anti-slip texture makes it convenient for the operator to rotate the external turntable two.
[0012] This utility model provides a protective device for steel structures, which has the following beneficial effects:
[0013] This protective device for steel structures, through the configuration of a steel structure body, a protective housing, a threaded sleeve, a one-way screw, a linkage cross plate, a control rail, a linkage block, an L-shaped clamping plate, an anti-slip pad, and a limiting support bar, can be effectively used on steel structures of different sizes, thereby ensuring the smooth progress of subsequent protective operations and enhancing the practical effect of the protective device.
[0014] This protective device for steel structures, through the configuration of a control and recovery shell, a component support shell, a one-way worm gear, a planar worm wheel, a winding rod, a protective curtain, and two external turntables, can effectively protect the surface of the steel structure, thereby ensuring that the coating on the steel structure surface will not be accidentally touched. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 A three-dimensional structural diagram of the present invention with the protective outer shell installed;
[0017] Figure 3 This is a three-dimensional structural diagram of the interior of this utility model.
[0018] Figure 4 This is a three-dimensional structural diagram of the linkage horizontal plate of this utility model;
[0019] Figure 5 This is a three-dimensional structural diagram of the linkage block of this utility model;
[0020] Figure 6 This is a three-dimensional structural diagram of the internal structure of the control and recovery shell of this utility model.
[0021] [Explanation of Key Component Symbols]
[0022] 1. Steel structure main body; 2. Installation protective shell; 3. Threaded sleeve; 4. One-way screw; 5. Linkage cross plate; 6. Control track; 7. Linkage block; 8. L-shaped clamping plate; 9. Anti-slip pad; 10. Restriction support bar; 11. Control and recovery shell; 12. Component support shell; 13. One-way worm gear; 14. Planar worm wheel; 15. Rewinding rod; 16. Protective curtain; 17. External turntable one; 18. External turntable two. Detailed Implementation
[0023] This utility model provides a protective device for steel structures.
[0024] Please see Figure 1 and Figure 2 The device includes a steel structure body 1 and a protective housing 2. A position control and recovery housing 11 is fixedly connected to the bottom of the protective housing 2. A component support housing 12 is fixedly connected to one side of the position control and recovery housing 11. The arrangement of the protective housing 2, the position control and recovery housing 11 and the component support housing 12 can effectively ensure the stability of the components of the protective device, prevent the components from being disturbed by external factors, and ensure the stable movement of the components.
[0025] Please see Figure 6 The inner wall of the component support housing 12 is rotatably connected to a one-way worm gear 13. The one-way worm gear 13 is supported and restricted by the component support housing 12, ensuring that the one-way worm gear 13 can rotate in place. The thread on the outer circumferential surface of the one-way worm gear 13 meshes with the teeth on the outer circumferential surface of the planar worm wheel 14. The tight fit between the one-way worm gear 13 and the planar worm wheel 14 can effectively achieve the force transmission effect and has a self-locking effect, thereby ensuring that the protective curtain 16 will not stretch due to external force.
[0026] Please see Figure 1 and Figure 6 The inner wall of the planar worm gear 14 is fixedly connected to the outer circumferential surface of the take-up rod 15. The planar worm gear 14 and the take-up rod 15 maintain a linkage effect. The outer circumferential surface of the take-up rod 15 is rotatably connected to the inner wall of the control and recovery housing 11. The control and recovery housing 11 supports the take-up rod 15 and applies a control effect, ensuring that the take-up rod 15 can rotate in place. The take-up rod 15 is fixedly installed with a protective curtain 16. The setting of the take-up rod 15 can effectively roll up the protective curtain 16, thereby ensuring that the protective curtain 16 can be freely scaled.
[0027] Please see Figure 3 and Figure 6 One end of the one-way worm gear 13 is fixedly connected to an external turntable 17. The external turntable 17 facilitates the operation of the one-way worm gear 13 by the operator. The inner wall of the protective housing 2 is rotatably connected to a threaded sleeve 3. The protective housing 2 effectively supports the threaded sleeve 3 and applies a position control effect, thereby ensuring that the threaded sleeve 3 can rotate in place without the risk of detachment.
[0028] Please see Figure 3 One end of the threaded sleeve 3 is fixedly connected to an external turntable 18. The outer circumferential surface of the external turntable 18 is provided with anti-slip texture. The setting of the external turntable 18 makes it convenient for the staff to operate the threaded sleeve 3.
[0029] Please see Figure 3 , Figure 4 and Figure 5 The inner wall of the threaded sleeve 3 is threadedly connected to the outer circumferential surface of the one-way screw 4. The tight fit between the threaded sleeve 3 and the one-way screw 4 allows the rotation of the threaded sleeve 3 to effectively drive the one-way screw 4 to perform vertical lifting and translating motion when the one-way screw 4 remains stable due to the subsequent components. One end of the one-way screw 4 is fixedly connected to the linkage plate 5, and the one-way screw 4 and the linkage plate 5 maintain a linkage effect.
[0030] Please see Figure 3 , Figure 4 and Figure 5 The linkage horizontal plate 5 is slidably connected to the linkage block 7 through the groove opened in the control track 6. The purpose of setting the control track 6 is to make the linkage horizontal plate 5 and the linkage block 7 tightly connected, and to drive the two linkage blocks 7 to move synchronously through the movement of the linkage horizontal plate 5. At this time, the movement directions of the two linkage blocks 7 are opposite. There are two linkage blocks 7 in total. The two linkage blocks 7 are slidably connected to the inner wall of the protective shell 2 through the limiting support bar 10. The purpose of setting the limiting support bar 10 is to effectively ensure that the two linkage blocks 7 move in the horizontal direction with the cooperation of the protective shell 2.
[0031] Please see Figure 1 , Figure 2 and Figure 3 An L-shaped clamping plate 8 is fixedly connected to one side of the linkage block 7. The linkage block 7 and the L-shaped clamping plate 8 maintain a linkage effect. There are two L-shaped clamping plates 8 in total. The two L-shaped clamping plates 8 can clamp the steel structure body 1. An anti-slip pad 9 is fixedly connected to one side of the L-shaped clamping plate 8. The anti-slip pad 9 is set to ensure the stability of the steel structure body 1 after the two L-shaped clamping plates 8 clamp it.
[0032] Working principle: When using this protective device, firstly, according to the length of the coating sprayed on the surface of the steel structure body 1, the outer turntable 17 is manually rotated. At this time, because the winding rod 15, which is connected to the planar worm gear 14, is restricted by the control and recovery housing 11, the outer turntable 17 drives the planar worm gear 14 to rotate through the one-way worm gear 13, so that the winding rod 15 rotates in place within the control and recovery housing 11, thereby unwinding the protective curtain 16. When the length of the protective curtain 16 unwound matches the actual spraying length, unwinding stops. Then, the two L-shaped clamping plates 8 are placed on both sides of the steel structure body 1. At this time, the outer turntable 18 is manually rotated again. Under the restriction of the installed protective housing 2, the threaded sleeve 3 will rotate in place, while the single... The linkage plate 5 connected to the lead screw 4 is restricted by the linkage block 7, which in turn is restricted by the protective housing 2. Therefore, the rotation of the threaded sleeve 3 drives the one-way lead screw 4 to move the linkage plate 5 upward. Under the action of the control rail 6, the linkage plate 5 pulls the two linkage blocks 7 to move simultaneously, causing the linkage blocks 7 to move the L-shaped clamping plates 8 synchronously. At this time, the distance between the two L-shaped clamping plates 8 will decrease, thereby clamping the steel structure body 1. Under the action of the anti-slip pad 9, the friction effect with the steel structure body 1 is increased, and the clamping effect is strengthened, thus completing the protection of the steel structure spraying area. The movable distance between the two linkage blocks 7 is the size of the steel structure body 1 that the protective device can adapt to.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A protection device for a steel structure, comprising a steel structure body (1) and a mounting protection shell (2), characterized in that: The inner wall of the installation protection shell (2) is rotationally connected with a threaded sleeve (3), the inner wall of the threaded sleeve (3) is threadedly connected with the outer circumferential surface of a one-way screw rod (4), one end of the one-way screw rod (4) is fixedly connected with a linkage horizontal plate (5), the linkage horizontal plate (5) is slidably connected with a recess of a linkage block (7) through a control position track (6), one side of the linkage block (7) is fixedly connected with an L-shaped clamping plate (8), one side of the L-shaped clamping plate (8) is fixedly connected with an anti-skid pad (9).
2. A protection device for steel structures according to claim 1, characterized in that: The linkage block (7) is two, and the two linkage blocks (7) are slidably connected with the inner wall of the installation protection shell (2) through a limiting support strip (10).
3. A protection device for steel structures according to claim 1, characterized in that: The bottom of the installation protection shell (2) is fixedly connected with a control position recovery shell (11), one side of the control position recovery shell (11) is fixedly connected with a component support shell (12).
4. A protection device for steel structures according to claim 3, characterized in that: The inner wall of the component support shell (12) is rotationally connected with a one-way worm (13), one end of the one-way worm (13) is fixedly connected with an external turntable one (17).
5. A protection device for steel structures according to claim 4, characterized in that: The threads on the outer circumferential surface of the one-way worm (13) are engaged with the teeth on the outer circumferential surface of a plane worm wheel (14), and the inner wall of the plane worm wheel (14) is fixedly connected with the outer circumferential surface of a winding rod (15).
6. A protection device for steel structures according to claim 5, characterized in that: The outer circumferential surface of the winding rod (15) is rotationally connected with the inner wall of the control position recovery shell (11), and the winding rod (15) is fixedly connected with a protective curtain (16).
7. A protective device for steel structures according to claim 1, characterized in that: One end of the threaded sleeve (3) is fixedly connected with an external turntable two (18), and the outer circumferential surface of the external turntable two (18) is provided with anti-skid lines.