CN113833246B - Scaffold for engineering - Google Patents

Abstract

The invention relates to a scaffold for engineering, which comprises a base and a platform unit, and the base is provided with a platform unit. The present invention can solve the problems existing at present: the existing scaffolding is assembled by various parts when in use, the construction efficiency needs to be higher in the process of engineering construction, and there are many places where the scaffolding is used, so it is necessary to adjust the scaffolding Moving around, and the scaffolding that needs to be assembled on site will reduce the construction efficiency, which is not conducive to the use in the construction process. When the scaffolding is in use, the staff need to be raised to the specified height to facilitate the normal construction. Now Some scaffolds are not designed with corresponding protective measures. During the construction process, there will be risks of construction waste, tools and staff falling. Without corresponding protective measures, it will not only bring safety problems to the staff on the scaffolding, but also cause serious damage to the workers on the scaffolding. The surrounding staff pose a safety issue.

Description

scaffolding for engineering

technical field

The invention relates to the field of scaffold design, in particular to an engineering scaffold.

Background technique

Scaffolding is a temporary construction tool set up on the construction site for workers to operate and solve vertical and horizontal transportation. It is mainly used in places where exterior walls, interior decoration or high floors cannot be directly constructed. It is mainly used for construction personnel to work up and down or for peripheral safety net enclosure and high-altitude installation components, etc. It is also widely used in advertising industry, municipal administration, transportation, roads and bridges, mines and other departments.

At present, when designing scaffolding for engineering, there are the following problems: ①The existing scaffolding is assembled from various parts when it is used. In the process of engineering construction, the construction efficiency needs to be higher, and there are many places where scaffolding is used. , Therefore, it is necessary to move the scaffolding around, and the scaffolding that needs to be assembled on site will lead to a reduction in construction efficiency, which is not conducive to the use in the construction process.

② Scaffolding needs to raise the staff to a specified height to facilitate the normal construction, but the existing scaffolding is not designed with corresponding protective measures, there will be construction waste, tools and the risk of staff falling during the construction process, without corresponding The protective measures will not only bring safety problems to the staff on the scaffold, but also bring safety problems to the staff around the scaffold.

Contents of the invention

The purpose of the present invention is to provide a scaffold for engineering to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions: a scaffold for engineering, including a base and a platform unit, and the base is provided with a platform unit.

The base is a rectangular plate structure, the four corners of the lower surface of the base are provided with universal rollers, and the four corners of the base are provided with positioning components.

The platform unit includes a support column, a support rod, a support slide rail, a support block, a support plate, an adjustment pole, an adjustment slideway, an adjustment slider, and an adjustment connecting rod. There are support columns at the four corners of the upper surface of the base, The upper end of the support column is provided with a support rod, and the support column and the support rod are provided with a support slide rail, and the upper support slide rails of the support column and the support rod are in a one-to-one correspondence, and the support slide rails are slidingly provided with support blocks, four The support blocks are jointly installed with support plates through bolts, and adjustment struts are installed between the support columns at the left and right relative positions and between the support blocks at the left and right relative positions. An adjustment slideway is provided, and adjustment sliders are arranged to slide symmetrically at both ends of the adjustment slideway, and two pairs of adjustment sliders at upper and lower relative positions are jointly hinged with an adjustment link, and the adjustment link is a scissors-type telescopic structure.

An adjustment lead screw is provided for rotation in the adjustment slideway located below, and the adjustment slide block in the adjustment slideway below is connected to the adjustment lead screw through threads, and the thread rotation directions between the two adjustment slide blocks and the adjustment lead screw are opposite , the left end of the upper surface of the base is symmetrically arranged with an adjusting motor front and back, and the adjusting lead screw is connected with the output end of the adjusting motor.

As a further solution of the present invention: the positioning assembly includes a positioning slide bar, a positioning pressing block, a No. 1 spring, a positioning block, a positioning support rod, a hydraulic cylinder and a positioning pressing rod, and the four corners of the base all slide up and down. A positioning slide bar is provided, and a positioning pressing block is installed on the upper end of the positioning sliding bar. A No. 1 spring is connected between the upper surface of the base and the lower surface of the positioning pressing block. Positioning struts are installed between the rods, and a hydraulic cylinder is provided on the side of the positioning slide bar far away from the positioning struts. Depressing rod, the contact between the positioning pressing block and the positioning pressing rod.

As a further solution of the present invention: the positioning block is composed of two isosceles right-angled triangular plates whose right-angled sides are welded perpendicular to each other, and the triangular plates at the front and rear relative positions and the triangular plates at the left and right relative positions are arranged in a figure-eight structure.

As a further solution of the present invention: the upper end of the support column and the lower end of the support rod are connected by a hinge, and the upper end surface of the support column is provided with an arc-shaped locking channel, and the lower end surface of the support rod is provided with an arc-shaped locking insertion rod. The tight channel is mated with the locking plunger, the side of the support column is slidably inserted with a locking pin, and the locking plunger and the locking pin are connected by threads.

As a further solution of the present invention: a protective slideway is provided on the support rod, a protective slider is slidably arranged in the protective slideway, and two protective poles are rotated on the protective slider, and the two protective poles are clamped The angle is °, the connection between the protective slider and the protective pole is provided with a No. 1 torsion spring, and the protective poles at the front and rear relative positions on the four support poles are connected with elastic protective poles. The No. 1 rack is arranged on the protective pole, and the No. 1 rack is in an arc-shaped structure. The No. 2 rack is arranged on the support block. The No. 1 rack and the No. 2 rack are meshed with each other. A No. 2 spring is installed, and the supporting block is in contact with the No. 2 spring.

As a further solution of the present invention: several slag leakage holes are evenly opened on the support plate, and anti-slip bumps are arranged between the four adjacent slag leakage holes, and the cross-section of the anti-slip bumps has a diamond-shaped structure.

As a further solution of the present invention: a door panel is provided on the support plate through a hinge, a ladder is provided on the adjusting link, and the door panel corresponds to the upper end of the ladder.

In addition, a method for using the above engineering scaffold is also provided, including the following steps: S1. In the initial state, the platform unit is in a stacked state, the universal rollers on the lower surface of the base are in contact with the ground, and then the base is moved to the construction site .

S2. At the construction site, put the support rod in a vertical state, and use the locking pin to lock the support column and the support rod, and then drive the adjustment screw to rotate through the adjustment motor, and the rotation of the adjustment screw drives the adjustment slider to interact with each other. Close to each other, the adjustment sliders are close to each other so that the adjustment connecting rod gradually lifts the support plate. When the support plate rises, the support block will push up the protection slider, so that the protection net opens at a certain angle of inclination. With the adjustment When the connecting rod is raised, the ladder is gradually tilted until the support plate rises to the specified height, and then the motor can be stopped for adjustment.

S3. During construction, the staff can ascend to the support plate from the ladder and open the door panel upwards, and the staff can reach the upper surface of the support plate to start construction. The tools and materials required during the construction process can also be delivered from the ladder through the door panel. to the support plate.

S4. After the construction is completed, the staff return to the ground from the support plate through the door panel and the ladder, and finally fold the platform unit back to the initial state.

Compared with the prior art, the present invention has the following advantages: 1. The platform unit designed by the present invention can not only realize vertical lifting, but also can be folded and stored when it needs to be moved to different construction sites, which is not only convenient to move, but also The unfolding speed during use is also fast, which effectively saves the time required for scaffolding construction and improves the efficiency of engineering construction.

2. The protective net designed by the present invention can intercept construction waste and tools falling during the construction process, prevent construction waste and tools from hurting workers on the ground, and can also prevent workers on scaffolding from falling, thereby protecting workers safety.

3. The support plate designed by the present invention has slag leakage holes and anti-slip bumps on the surface of the support plate, which can prevent the occurrence of slipping problems caused by sand particles sticking to the soles of the staff, thereby protecting the personal safety of the staff.

4. The support block designed by the present invention can provide more stable support for the scaffold due to its special structure and the cooperation of the adjacent support blocks.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic perspective view of the first perspective structure of the present invention.

Fig. 2 is a schematic diagram of a perspective structure of a second viewing angle of the present invention.

FIG. 3 is a schematic diagram of the enlarged structure at A in FIG. 2 of the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the support column of the present invention.

Fig. 5 is a schematic diagram of the three-dimensional structure of the support plate of the present invention.

Fig. 6 is a schematic diagram of the three-dimensional structure of the protection slider of the present invention.

Fig. 7 is a schematic diagram of the three-dimensional structure of the support block of the present invention.

Fig. 8 is a schematic diagram of the three-dimensional structure of the positioning block of the present invention.

In the figure: 1, base; 10, universal roller; 12, positioning assembly; 120, positioning slide bar; 121, positioning pressing block; 122, No. 1 spring; 123, positioning block; Cylinder; 126, positioning pressure rod; 127, triangular plate; 2, platform unit; 20, support column; 200, locking road; 201, locking plunger; 202, locking pin; Road; 211, protective slider; 212, protective pole; 213, protective net; 214, No. 1 rack; 215, No. 2 rack; 216, No. 2 spring; 22, support slide rail; 23, support block; 24, support plate; 240, slag leakage hole; 241, anti-slip bump; 242, door panel; 243, ladder; 25, adjusting pole; 26, adjusting slideway; 260, adjusting screw; 261, adjusting motor; 27, Adjust the slider; 28, adjust the connecting rod.

detailed description

The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

Example 1

Referring to FIG. 1 to FIG. 8 , an engineering scaffold includes a base 1 and a platform unit 2 , and the base 1 is provided with the platform unit 2 .

1 and 2, the platform unit 2 includes a support column 20, a support rod 21, a support slide rail 22, a support block 23, a support plate 24, an adjustment pole 25, an adjustment slideway 26, an adjustment slider 27 and an adjustment Connecting rod 28, four corners on the upper surface of the base 1 are provided with supporting columns 20, the upper end of supporting columns 20 is provided with supporting rods 21, supporting slide rails 22 are arranged on supporting columns 20 and supporting rods 21, and supporting columns 20 and The upper support slide rail 22 of support bar 21 all corresponds up and down one by one, and support block 23 is slidably arranged on support slide rail 22, and support plate 24 is installed jointly by bolt between four support blocks 23, and the support column 20 of left and right relative position Adjusting struts 25 are installed between the support blocks 23 in relative positions on the left and right sides, and adjustment slides 26 are provided on the opposite surfaces of the two adjustment struts 25 in relative positions up and down, and the two ends of the adjustment slides 26 slide symmetrically. An adjustment slider 27 is provided, and an adjustment connecting rod 28 is jointly hinged between two pairs of adjustment sliders 27 at upper and lower relative positions. An adjustment lead screw 260 is provided for inner rotation, and the adjustment slider 27 in the adjustment slideway 26 below is threadedly connected to the adjustment lead screw 260, and the screw rotation directions between the two adjustment sliders 27 and the adjustment lead screw 260 are opposite , the left end of the upper surface of the base 1 is symmetrically provided with an adjusting motor 261 front and rear, and the adjusting screw 260 is connected to the output end of the adjusting motor 261 .

Referring to Fig. 4, the upper end of the support column 20 is connected to the lower end of the support rod 21 through a hinge, and the upper end surface of the support column 20 is provided with an arc-shaped locking channel 200, and the lower end surface of the support rod 21 is provided with an arc-shaped locking insertion rod. 201, the locking channel 200 is mated with the locking insertion rod 201, and the side of the support column 20 is slidably inserted with the locking pin 202, and the locking insertion rod 201 and the locking pin 202 are connected by threads.

During specific work, in the initial state, the angle between the relative bending of the left and right support rods 21 and the support column 20 is 90°, and at this time, the adjustment link 28 is in the lowest state, and the support block 23 is in the support column 20. On the support slide rail 22 above, when the support plate 24 needs to be used, the support rod 21 is adjusted to a vertical state, and in the process of the adjustment, the locking insertion rod 201 is gradually inserted into the locking channel 200 until the When the support rod 21 is in the vertical state completely, then use the locking pin 202 to completely lock the locking insertion rod 201 and the locking road 200 to ensure the stability of the support rod 21, then the adjustment motor 261 starts to work, and the adjustment motor 261 It will drive the adjustment lead screw 260 to rotate, and the rotation of the adjustment lead screw 260 will drive the two adjustment sliders 27 located in the same adjustment slideway 26 to approach each other, so that the adjustment connecting rod 28 will gradually expand and rise, so that the adjustment rod 28 will be positioned at the support column 20. The support block 23 on the support slide rail 22 on the top is lifted to the support slide rail 22 on the support rod 21, after the support plate 24 rises to the specified height, the rotation of the adjustment motor 261 can be stopped, and the adjustment of the screw 260 Under the action, the distance between the adjustment sliders 27 is locked, thereby ensuring the stability of the support plate 24, and then the staff can go up to the support plate 24 to start construction work.

Referring to Fig. 2, Fig. 6 and Fig. 7, a protective slideway 210 is opened on the support rod 21, a protective slide block 211 is slidably arranged in the protective slideway 210, and two protective support rods 212 are arranged on the protective slide block 211 for rotation. , and the angle between the two protective poles 212 is 90°, the connection between the protective slider 211 and the protective pole 212 is provided with a No. 1 torsion spring, and the front and rear relative positions of the four support poles 21 A resilient protective net 213 is connected between the protective poles 212 at the left and right relative positions, and a No. 1 rack 214 is arranged on the protective pole 212. The No. 1 rack 214 is in an arc-shaped structure, and the supporting block 23 is provided with There is a No. 2 rack 215, a No. 1 rack 214 and a No. 2 rack 215 meshing with each other, a No. 2 spring 216 is installed on the protective slider 211, and the support block 23 contacts with the No. 2 spring 216.

During specific work, when the support block 23 moves from the support column 20 to the support rod 21, the No. 2 rack 215 on the support block 23 will first contact the No. 1 rack 214 on the protection slider 211, and then the No. As the rack 215 continues to move up, it will drive the protective pole 212 to rotate around the connection with the protective slider 211 through the engagement with the No. The rod 21 forms a certain angle, and the expansion of the protective pole 212 will drive the protective net 213 to expand together. After the support block 23 contacts the No. 2 spring 216, the No. 1 rack 214 will not mesh with the No. 2 rack 215, and then Construction waste, tools or staff fall onto the protective net 213, so that construction waste, tools or staff are separated under the elastic force of the protective net 213 and No. 2 spring 216.

Referring to Fig. 5, several slag leakage holes 240 are evenly opened on the support plate 24, and anti-slip bumps 241 are arranged between the four slag leakage holes 240 at adjacent positions, and the cross-section of the anti-slip bumps 241 has a diamond-shaped structure ; During specific work, the slag leakage hole 240 can facilitate the falling of construction waste scraps, and the anti-slip bump 241 can not only prevent the soles of the staff from slipping, but also scrape the soles of the staff to scrape off the grit stuck on the soles , so as to prevent the staff from slipping and falling, so as to protect the personal safety of the staff.

Referring to Fig. 2, described support plate 24 is provided with door panel 242 by hinge, is provided with ladder 243 on the adjustment connecting rod 28, and door panel 242 corresponds to the upper end of ladder 243; Use is not only convenient for the staff to go up and down the support plate 24, but also facilitates the up and down support plate 24 of the required items in the construction process.

Example 2

On the basis of the above-mentioned embodiment 1, referring to Fig. 1, the base 1 is a rectangular plate structure, the four corners of the lower surface of the base 1 are provided with universal rollers 10, and the four corners of the base 1 are provided with Positioning assembly 12.

3 and 8, the positioning assembly 12 includes a positioning slide bar 120, a positioning pressure block 121, a No. 1 spring 122, a positioning block 123, a positioning rod 124, a hydraulic cylinder 125 and a positioning pressure rod 126. All corners are provided with a positioning slide bar 120 in a manner of sliding up and down, and a positioning pressing block 121 is installed on the upper end of the positioning sliding bar 120, and a No. spring 122 is connected between the upper surface of the base 1 and the lower surface of the positioning pressing block 121, and the positioning sliding bar Positioning block 123 is installed at 120 lower ends, and the position between the corner of base 1 upper surface and positioning slide bar 120 is equipped with positioning strut 124, and the side of positioning slide bar 120 away from positioning strut 124 is provided with hydraulic cylinder 125, and base 1. The upper surface is fixedly connected to the hydraulic cylinder 125. A positioning pressure rod 126 is hinged between the upper end of the positioning rod 124 and the output end of the hydraulic cylinder 125. The positioning pressure block 121 contacts the positioning pressure rod 126.

Referring to FIG. 8 , the positioning block 123 is composed of two isosceles right-angled triangular plates 127 whose right-angled sides are welded perpendicular to each other, and the triangular plates 127 at the front and rear relative positions and the triangular plates 127 at the left and right relative positions are all arranged in a figure-eight structure.

During specific work, when it is necessary to move the base 1 to the designated construction position, the universal roller 10 can play a role in assisting the movement. After the base 1 moves to the designated position, the hydraulic cylinder 125 will shrink, and the hydraulic cylinder 125 will pull the positioning The end of the pressure rod 126 connected to it moves down, and then the positioning pressure rod 126 will press down on the positioning pressing block 121, so that the positioning slide bar 120 slides up and down before the base 1, and the No. 1 spring 122 will be compressed, and the positioning slide bar 120 will In the process of moving down, the positioning blocks 123 gradually come into contact with the ground, and then the joint action of the four positioning blocks 123 will reversely lift the base 1, so that the universal roller 10 is gradually separated from the ground, and then the positioning blocks 123 will be on the base 1. And the entire platform unit 2 is supported, due to the structural characteristics of the positioning block 123, the base 1 can be supported stably in all directions, thereby ensuring the stability of the platform unit 2.

Example 3

On the basis of above-mentioned embodiment 1 and embodiment 2, a kind of using method of engineering scaffolding is as follows:

In actual work: step S1. In the initial state, the platform unit 2 is in a stacked state. When the base 1 needs to be moved to the designated construction position, the universal roller 10 can play a role in assisting the movement. When the base 1 moves to After specifying the position, the hydraulic cylinder 125 contracts, and the contraction of the hydraulic cylinder 125 will pull the end of the positioning pressing rod 126 to move down, and then the positioning pressing rod 126 will press down on the positioning pressing block 121, so that the positioning slide bar 120 will move forward. When the base 1 slides up and down, the No. 1 spring 122 will be compressed. During the downward movement of the positioning slider 120, the positioning block 123 will gradually come into contact with the ground, and then the joint action of the four positioning blocks 123 will push the base 1 up in reverse. The universal roller 10 is gradually separated from the ground, and then the positioning block 123 will support the base 1 and the entire platform unit 2 .

Step S2. At the construction site, in the initial state, the angle between the relative bending of the left and right support rods 21 and the support column 20 is 90°, and at this time, the adjustment link 28 is in the lowest state, and the support block 23 On the support slide rail 22 on the support column 20, when the support plate 24 needs to be used, the support rod 21 is placed in a vertical state, and in the process of setting, the locking insertion rod 201 is gradually inserted into the locking channel Within 200, when the support rod 21 is completely in the vertical state, use the locking pin 202 to completely lock the locking insertion rod 201 and the locking channel 200, and then the adjusting motor 261 starts to work, and the adjusting motor 261 will drive the adjusting screw 260 rotation, the rotation of the adjustment lead screw 260 will drive the two adjustment sliders 27 in the same adjustment slideway 26 to approach each other, so that the adjustment connecting rod 28 will gradually expand and rise, so that the support slide rail on the support column 20 will The support block 23 on the 22 is jacked up to the support slide rail 22 on the support bar 21, and after the support plate 24 rises to the specified height, the rotation of the adjustment motor 261 can be stopped.

Step S3. During construction, the staff can rise from the ladder 243 to the support plate 24 and open the door panel 242 upwards, and the staff can reach the upper surface of the support plate 24 to start construction. The tools and materials required in the construction process can also be From the ladder 243 to the support plate 24 through the door panel 242 .

Step S4. After the construction is completed, the staff return to the ground from the support plate 24 through the door panel 242 and the ladder 243, and finally fold the platform unit 2 back to the initial state.

In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (6)

1. A scaffolding for engineering, comprising a base (1) and a platform unit (2), characterized in that: the base (1) is provided with a platform unit (2); wherein: The base (1) is a rectangular plate structure, the four corners of the lower surface of the base (1) are provided with universal rollers (10), and the four corners of the base (1) are provided with positioning components (12) ; Described platform unit (2) comprises support post (20), support bar (21), support slide rail (22), support block (23), support plate (24), adjustment strut (25), adjustment slideway ( 26), adjust the slider (27) and adjust the connecting rod (28), the four corners of the upper surface of the base (1) are provided with support columns (20), and the upper end of the support column (20) is provided with a support rod (21), The support column (20) and the support bar (21) are all provided with support slide rails (22), and the support slide rails (22) on the support column (20) and the support bar (21) are all corresponding up and down one by one, and the support slides A support block (23) is slidingly arranged on the rail (22), and a support plate (24) is installed through bolts between the four support blocks (23). Adjustment struts (25) are installed between the support blocks (23), and the opposite faces of the two adjustment struts (25) at the upper and lower relative positions are provided with adjustment slideways (26). An adjustment slider (27) is provided for end-symmetrical sliding, and an adjustment connecting rod (28) is jointly hinged between two pairs of adjustment sliders (27) at upper and lower relative positions, and the adjustment connecting rod (28) is scissor-like telescopic structure; An adjustment screw (260) is arranged to rotate in the adjustment slideway (26) below, and the adjustment slide block (27) and the adjustment screw (260) in the adjustment slideway (26) below are threaded. And the direction of rotation of the screw thread between the two adjustment sliders (27) and the adjustment leading screw (260) is opposite, and the left end of the upper surface of the base (1) is symmetrically provided with an adjustment motor (261) front and back, and the adjustment screw (260) and the adjustment motor (261) output terminal connection; A protective slideway (210) is provided on the support bar (21), a protective slide block (211) is slidably provided in the protective slideway (210), and two protective poles ( 212), and the angle between the two protective poles (212) is 90 °, the junction of the protective slide block (211) and the protective pole (212) is provided with a torsion spring, and the four support poles (21) Elastic protective nets (213) are connected between the protective poles (212) at the front and rear relative positions and between the protective poles (212) at the left and right relative positions, and a No. 1 rack (214) is arranged on the protective poles (212). ), the No. 1 rack (214) is an arc-shaped structure, the support block (23) is provided with a No. 2 rack (215), and the No. 1 rack (214) and the No. 2 rack (215) mesh with each other , No. 2 spring (216) is installed on the protective slide block (211), and support block (23) contacts with No. 2 spring (216). 2. An engineering scaffold according to claim 1, characterized in that: the positioning assembly (12) includes a positioning slide bar (120), a positioning pressing block (121), a No. 1 spring (122), a positioning block (123), positioning pole (124), hydraulic cylinder (125) and positioning pressure bar (126), the four corners of base (1) are all provided with positioning slide bar (120) in the mode of sliding up and down, and positioning slide The upper end of the bar (120) is equipped with a positioning briquetting block (121), a No. 1 spring (122) is connected between the upper surface of the base (1) and the lower surface of the locating briquetting block (121), and a positioning block is installed at the lower end of the positioning slide bar (120) (123), the position between the corner of the upper surface of the base (1) and the positioning slide bar (120) is equipped with a positioning pole (124), and the positioning pole (120) is set away from the side of the positioning pole (124) There is a hydraulic cylinder (125), the upper surface of the base (1) is fixedly connected with the hydraulic cylinder (125), and a positioning pressure rod (126) is jointly hinged between the upper end of the positioning support rod (124) and the output end of the hydraulic cylinder (125). Contact between the briquetting block (121) and the positioning pressure rod (126). 3. A kind of scaffolding for engineering according to claim 2, characterized in that: the positioning block (123) is composed of two isosceles right-angled triangular plates (127) whose right-angled sides are welded perpendicularly to each other, and the two triangular plates (127) Arranged in a figure-of-eight structure. 4. A scaffold for engineering according to claim 1, characterized in that: the upper end of the support column (20) is connected to the lower end of the support rod (21) through a hinge, and the upper end surface of the support column (20) is provided with a circular arc shaped locking road (200), the lower end of the support rod (21) is provided with an arc-shaped locking insertion rod (201), the locking road (200) is mated with the locking insertion rod (201), and the support column ( 20) A locking pin (202) is slidably inserted on the side, and the locking insertion rod (201) is threadedly connected with the locking pin (202). 5. A kind of scaffolding for engineering according to claim 1, is characterized in that: several slag leakage holes (240) are uniformly provided on the support plate (24), and four slag leakage holes (240) at adjacent positions ( 240) is provided with an anti-skid bump (241), and the cross-section of the anti-skid bump (241) has a diamond-shaped structure. 6. A kind of scaffolding for engineering according to claim 1, characterized in that: the support plate (24) is provided with a door panel (242) through a hinge, and a ladder (243) is provided on the adjusting link (28), The door panel (242) corresponds to the upper end of the ladder (243).

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