Z-shaped steel surface derusting and spraying integrated device and construction method

Abstract

The invention discloses a Z-shaped steel surface rust removal and spraying integrated device and a construction method, and relates to the field of polishing devices. According to the Z-shaped steel surface rust removal and spraying integrated device and method, after an operation vehicle body is placed between two pieces of Z-shaped steel which are to be subjected to rust removal and spraying and are arranged in parallel, the operation vehicle body moves in the length direction of the two pieces of Z-shaped steel; the two Z-shaped steel grinding mechanisms at the bottoms of the two sides of the front end of the operation vehicle body are used for grinding the upper surfaces of the two Z-shaped steel on the two sides of the operation vehicle body correspondingly, and the waste gas and waste residue recycling mechanism is used for sucking waste gas and waste residues obtained after grinding of the two Z-shaped steel grinding mechanisms. And finally, two spraying mechanisms at the bottoms of the two sides of the rear end of the operation vehicle body are used for spraying the upper surfaces of the two pieces of Z-shaped steel on the two sides of the operation vehicle body correspondingly, so that the upper surfaces of the Z-shaped steel are ground and derusted rapidly, efficiently and comprehensively, and the beneficial effects of being good in grinding quality and high in operation efficiency are achieved.

Description

Technical Field

[0001] This application relates to the field of polishing equipment, and more specifically, to an integrated device and method for rust removal and spraying of Z-shaped steel surfaces. Background Technology

[0002] When removing rust and spraying paint on the Z-shaped steel used for trench covers, problems arise such as difficulty in removing rust and spraying paint on the side adjacent to the trench, resulting in low construction efficiency. At the same time, it is difficult to carry out construction at the right angle of the Z-shaped steel, resulting in uneven paint thickness and thus failing to guarantee construction quality. When the trench is deep and wide, manual construction is more dangerous, requiring safety protection and increasing additional costs. Furthermore, it is greatly affected by the environment and weather, which has significant limitations and affects the construction progress and the overall construction period.

[0003] Therefore, an integrated device for rust removal and spraying of Z-shaped steel surfaces is needed to achieve fast, efficient and high-quality rust removal and spraying of Z-shaped steel surfaces. Summary of the Invention

[0004] The purpose of this application is to provide an integrated device and construction method for rust removal and spraying of Z-shaped steel surfaces, which can quickly, efficiently and comprehensively grind and remove rust from the upper surface of Z-shaped steel, and has the advantages of good grinding quality and high work efficiency.

[0005] This application is implemented as follows: This application provides an integrated device for rust removal and spraying of Z-shaped steel surfaces, comprising: The work vehicle body is configured to extend and retract along the width direction, and a movable wheel is connected to the bottom of each side at both ends of the work vehicle body; A pair of Z-shaped steel grinding mechanisms are connected to the bottom of the front sides of the work vehicle body, respectively, and are used to grind the upper surfaces of the two Z-shaped steels on both sides of the work vehicle body; The waste gas and slag recovery mechanism includes a recovery cover respectively installed on two Z-shaped steel grinding mechanisms, a waste gas and slag collection bin connected to the working vehicle body, and an air pump connected to the recovery cover and the waste gas and slag collection bin respectively through pipelines; A pair of spraying mechanisms are connected to the bottom of the rear sides of the work vehicle body, respectively, and are used to spray the upper surfaces of the two Z-shaped steels on both sides of the work vehicle body.

[0006] In some alternative implementations, the vehicle body includes a left frame, a right frame, and multiple first connecting sleeves. The left frame and the right frame are respectively connected to a first connecting rod that is slidably inserted into each of the first connecting sleeves. The bottom of the left frame and the right frame is provided with a shelf, and the two ends of the shelf are respectively connected to two first connecting sleeves. The air pump and the waste gas and slag collection bin are connected to the shelf.

[0007] In some alternative implementations, multiple second connecting rods are also included, with at least one second connecting sleeve connected to each of the left and right vehicle frames, and the two ends of each second connecting rod being slidably inserted into two second connecting sleeves respectively.

[0008] In some alternative implementations, a baffle is connected between at least one pair of first connecting sleeves arranged vertically at intervals.

[0009] In some alternative embodiments, the Z-shaped steel grinding mechanism includes a Z-shaped first positioning block, an annular transmission belt sleeved on the outer wall of the first positioning block, and a drive mechanism for driving the transmission belt to reciprocate along the Z direction and the surface of the first positioning block, wherein the outer wall of the transmission belt is provided with a sandpaper layer.

[0010] In some alternative implementations, the drive mechanism includes a plurality of transmission positioning rollers arranged circumferentially around the first positioning block and a drive motor for driving each transmission positioning roller to rotate. The drive motor is connected to the side wall of the first positioning block, and each transmission positioning roller rolls against the inner or outer wall of the transmission belt.

[0011] In some alternative implementations, the Z-shaped steel grinding mechanism further includes a first electric push rod for driving the extension and retraction of the first positioning block, the first electric push rod being connected to the work vehicle body.

[0012] In some alternative implementations, the spraying mechanism includes a Z-shaped second positioning block, nozzles spaced apart at the bottom of the second positioning block, and a pressure pump connected to the work vehicle body. The work vehicle body is provided with paint storage compartments that are respectively connected to the two pressure pumps through pipes. The pressure pumps are connected to the second positioning block, and the second positioning block is provided with spraying chambers that are respectively connected to the pressure pumps and each nozzle.

[0013] In some alternative implementations, the bottom of the work vehicle body is connected to each of the moving wheels via a second electric push rod.

[0014] This application also provides a construction method for an integrated device for rust removal and spraying of Z-shaped steel surfaces, which is carried out using the aforementioned integrated device for rust removal and spraying of Z-shaped steel surfaces, and includes the following steps: The work vehicle body is placed between two parallel Z-shaped steels that need to be derusted and sprayed; Move the work vehicle along the length of the two Z-shaped steels, use the two Z-shaped steel grinding mechanisms at the bottom of the front sides of the work vehicle to grind the upper surfaces of the two Z-shaped steels on both sides of the work vehicle, and use the waste gas and slag recovery mechanism to extract the waste gas and slag after grinding by the two Z-shaped steel grinding mechanisms. Two spraying mechanisms on the bottom of the rear sides of the work vehicle body are used to spray the upper surfaces of the two Z-shaped steels on both sides of the work vehicle body.

[0015] The beneficial effects of this application are as follows: The integrated device and method for rust removal and spraying of Z-shaped steel surfaces provided by this application involves placing the work vehicle body between two parallel Z-shaped steels to be rusted and sprayed. While the work vehicle body moves along the length of the two Z-shaped steels, two Z-shaped steel grinding mechanisms on the bottom of the front sides of the work vehicle body grind the upper surfaces of the two Z-shaped steels on both sides of the work vehicle body. A waste gas and slag recovery mechanism is used to extract the waste gas and slag after grinding by the two Z-shaped steel grinding mechanisms. Finally, two spraying mechanisms on the bottom of the rear sides of the work vehicle body spray the upper surfaces of the two Z-shaped steels on both sides of the work vehicle body. This allows for rapid, efficient, and comprehensive grinding and rust removal of the upper surfaces of the Z-shaped steels, with the advantages of good grinding quality and high work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A first-view structural schematic diagram of the integrated rust removal and spraying device for Z-shaped steel surfaces provided in the embodiments of this application; Figure 2 A partial cross-sectional view of the two ends of the second connecting rod connected by the second connecting sleeve of the left and right frames in the integrated device for rust removal and spraying of Z-shaped steel surfaces provided in this application embodiment; Figure 3 A partial structural schematic diagram from a second perspective of the Z-shaped steel surface rust removal and spraying integrated device provided in the embodiments of this application; Figure 4 A third-view structural schematic diagram of the integrated rust removal and spraying device for Z-shaped steel surfaces provided in the embodiments of this application; Figure 5 A partial structural schematic diagram of the Z-shaped steel grinding mechanism in the integrated device for Z-shaped steel surface rust removal and spraying provided in the embodiments of this application, from a first-view perspective; Figure 6 A partial structural schematic diagram of the Z-shaped steel grinding mechanism in the integrated Z-shaped steel surface rust removal and spraying device provided in the embodiments of this application, from a second perspective; Figure 7 A partial structural diagram of the spraying mechanism connected to the left side frame in the integrated rust removal and spraying device for Z-shaped steel surfaces provided in this application embodiment; Figure 8This is a cross-sectional view of the second positioning block of the spraying mechanism in the integrated device for rust removal and spraying of Z-shaped steel surfaces provided in the embodiments of this application.

[0018] In the diagram: 100, working vehicle body; 110, moving wheel; 111, second electric push rod; 112, wheel seat; 120, left side frame; 130, right side frame; 140, first connecting sleeve; 150, first connecting rod; 160, storage rack; 170, second connecting rod; 180, second connecting sleeve; 190, baffle; 200, Z-shaped steel grinding mechanism; 210, first positioning block; 220, first electric push rod; 230, transmission belt; 240, transmission positioning roller; 250, drive motor; 300, waste gas and slag recovery mechanism; 310, recovery hood; 320, waste gas and slag collection bin; 330, air pump; 400, spraying mechanism; 410, second positioning block; 420, nozzle; 430, pressurizing pump; 440, paint storage bin; 450, spraying chamber. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following detailed description of the features and performance of the integrated rust removal and spraying device and construction method for Z-shaped steel surfaces of this application, in conjunction with embodiments, provides further insight into their application.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown in the embodiment of this application, an integrated device for rust removal and spraying of Z-shaped steel is provided. It includes a working vehicle body 100, a pair of Z-shaped steel grinding mechanisms 200 and a waste gas and slag recovery mechanism 300 respectively connected to the bottom of the front sides of the working vehicle body 100, and a pair of spraying mechanisms 400. The working vehicle body 100 includes a left frame 120, a right frame 130, four first connecting sleeves 140 perpendicular to the left frame 120 and the right frame 130, and two second connecting rods 170 perpendicular to the left frame 120 and the right frame 130. The four first connecting sleeves 140 are respectively located on the upper and lower sides between the left frame 120 and the right frame 130. The left frame 120 and the right frame 130 are respectively connected to first connecting rods 150 slidably inserted at both ends of the four first connecting sleeves 140. The top ends of the left frame 120 and the... A second connecting sleeve 180 is connected to each of the top ends of the right frame 130. The two ends of the two second connecting rods 170 are slidably inserted into the two second connecting sleeves 180 at the top ends of the left frame 120 and the right frame 130, respectively. A shelf 160 is connected between the two lower first connecting sleeves 140. An air pump 330, a waste gas and slag collection chamber 320, a pressurizing pump 430 and a paint storage chamber 440 are fixedly installed on the shelf 160. The air pump 330 is connected to the waste gas and slag collection chamber 320 through a pipe. A baffle 190 is connected between the two lower first connecting sleeves 140 and the upper first connecting sleeve 140 at the same end. The bottom ends of the left frame 120 and the right frame 130 are connected to wheel seats 111 through second electric push rods 111. Each wheel seat 111 is connected to a rotatable movable wheel 110.

[0028] Two Z-shaped steel grinding mechanisms 200 are used to grind the upper surfaces of two Z-shaped steels on both sides of the work vehicle body 100. Each Z-shaped steel grinding mechanism 200 includes a Z-shaped first positioning block 210, a first electric push rod 220 for driving the first positioning block 210 to extend and retract, an annular transmission belt 230 sleeved on the outer wall of the first positioning block 210, and a drive mechanism for driving the transmission belt 230 to reciprocate along the Z direction and the surface of the first positioning block 210. The first electric push rods 220 of the two Z-shaped steel grinding mechanisms 200 are respectively connected to the bottom of one end of the left frame 120 and the right frame 130. The outer wall of 230 is provided with a sandpaper layer. The driving mechanism includes eight transmission positioning rollers 240 arranged circumferentially along the first positioning block 210 and drive motors 250 for driving each transmission positioning roller 240 to rotate. A transmission positioning roller 240 is provided at each corner of the outer wall of the first positioning block 210. Each drive motor 250 is connected to the side wall of the first positioning block 210. Two transmission positioning rollers 240 located in the middle of the first positioning block 210 roll and press against one side of the outer wall of the transmission belt 230, while the other six transmission positioning rollers 240 roll and press against the inner wall of the transmission belt 230.

[0029] The waste gas and slag recovery mechanism 300 includes recovery covers 310 respectively mounted on two first positioning blocks 210. An air pump 330 is connected to the two recovery covers 310 respectively through pipes. The two recovery covers 310 are respectively fixed to the bottom of one end connected to the left frame 120 and the right frame 130. Two spraying mechanisms 400 are respectively connected to the bottom of the other end of the left frame 120 and the right frame 130, and are used to spray the upper surfaces of the two Z-shaped steels on both sides of the working vehicle body 100. The spraying mechanism 400 includes a Z-shaped second positioning block 410 and four spaced connections to the bottom of the second positioning block 410. The first positioning block 210 has two nozzles 420 on one side of the middle section, and two pressure pumps 430 are respectively connected to the bottom of the left frame 120 and the right frame 130. The two pressure pumps 430 are connected to the paint storage chamber 440 through pipes. The two second positioning blocks 410 are respectively connected to the pressure pumps 430. The second positioning block 410 has a spraying chamber 450 that is connected to the pressure pumps 430 and each nozzle 420. The height of the second positioning block 410 is higher than the height of the first positioning block 210.

[0030] This application also provides a construction method for an integrated device for rust removal and spraying of Z-shaped steel surfaces, which is carried out using the aforementioned integrated device for rust removal and spraying of Z-shaped steel surfaces, and includes the following steps: Step 1: Place the work vehicle 100 between two parallel Z-shaped steels to be rusted and painted. Control the second electric push rods 111 at the bottom of both ends of the left frame 120 and the right frame 130 to adjust their heights. This will ensure that the bottom surface of the transmission belt 230 fitted on the first positioning block 210 of the Z-shaped steel grinding mechanism 200 connected to the bottom of one end of the left frame 120 and the right frame 130 is equal to the top surface of the two Z-shaped steels. At this time, the second positioning block 410 connected to the bottom of the other end of the left frame 120 and the right frame 130 will be positioned between the two Z-shaped steels. Above the top surface, the distance between the left frame 120 and the right frame 130 that make up the work vehicle body 100 is then adjusted so that the first connecting rods 150 connected to the left frame 120 and the right frame 130 slide relative to each of the first connecting sleeves 140, and the second connecting sleeves 180 connected to the top ends of the left frame 120 and the right frame 130 slide relative to the two second connecting rods 170, until the distance between the first positioning blocks 210 in the Z-shaped steel grinding mechanism 200 connected to the bottom of one end of the left frame 120 and the right frame 130 is equal to the distance between the two Z-shaped steels; Step 2: Use a tractor to tow the work vehicle 100 along the length of the two Z-shaped steels. Control the start of each drive motor 250 of the two Z-shaped steel grinding mechanisms 200, which drives each transmission positioning roller 240 to rotate and drive the annular transmission belt 230 to move along the surface of the first positioning block 210 of the Z-shape. Thus, the sandpaper layer set on the outer wall of the transmission belt 230, which moves along the surface of the first positioning block 210 of the two Z-shaped steel grinding mechanisms 200, grinds the upper surfaces of the two Z-shaped steels on both sides. At the same time, control the start of the air pump 330 to draw the exhaust gas and iron filings generated during the grinding process into the exhaust gas and slag collection bin 320 through the recovery cover 310 above for storage. Step 3: The towing vehicle moves the working vehicle body 100 along the length of the two Z-shaped steels, so that the nozzles 420 at the bottom of the second positioning block 410 of the spraying mechanism 400 connected to the other end of the left frame 120 and the right frame 130 are located on the upper surface of the two Z-shaped steels after grinding. The two pressure pumps 430 are started to transport the paint in the paint storage bin 440 through the pipeline and the pressure pumps 430 to the spraying chamber 450 in the two second positioning blocks 410. The paint in the spraying chamber 450 is then sprayed out through the four nozzles 420 at the bottom of the Z-shaped second positioning block 410 to spray the upper surface of the two Z-shaped steels.

[0031] The integrated device and method for rust removal and spraying of Z-shaped steel surfaces provided in this application embodiment uses a work vehicle 100 that can extend and retract along the width direction and can be raised and lowered to connect a pair of Z-shaped steel grinding mechanisms 200, a pair of waste gas and slag recovery mechanisms 300, and a pair of spraying mechanisms 400 respectively connected to the bottom of the front sides of the work vehicle 100. After placing the work vehicle 100 between two parallel Z-shaped steels to be rusted and sprayed, the width and height are adjusted so that the bottom surface height of the transmission belt 230 fitted on the first positioning block 210 of the Z-shaped steel grinding mechanism 200 connected to one end of the left frame 120 and the right frame 130 is equal to the height of the top surface of the two Z-shaped steels. This also ensures that the left frame 120 and the right frame 130 are aligned. The second positioning block 410, connected to the bottom of the other end of 130, is located above the top surfaces of the two Z-shaped steels. Then, the working vehicle 100 moves along the length of the two Z-shaped steels. Two Z-shaped steel grinding mechanisms 200 are used to grind the upper surfaces of the two Z-shaped steels on both sides of the working vehicle 100. Two waste gas and slag recovery mechanisms 300 are used to extract the waste gas and slag after grinding by the two Z-shaped steel grinding mechanisms 200. Finally, two spraying mechanisms 400 at the bottom of the rear sides of the working vehicle 100 are used to spray the upper surfaces of the two Z-shaped steels on both sides of the working vehicle 100. This allows for fast, efficient and comprehensive grinding and rust removal of the upper surfaces of the Z-shaped steels, with the advantages of good grinding quality and high work efficiency.

[0032] The Z-shaped steel grinding mechanism 200 uses a transmission belt 230 fitted onto the outer wall of the Z-shaped first positioning block 210. Eight drive motors 250 drive eight transmission positioning rollers 240, which respectively roll and press against the inner and outer walls of the transmission belt 230, to define the shape of the transmission belt 230 as Z-shaped and move along the surface of the Z-shaped first positioning block 210 to grind the upper surface of the Z-shaped steel. This allows the sandpaper layer on the outer wall of the transmission belt 230 to better fit the turning point of the upper surface of the Z-shaped steel for grinding, improving the rust removal quality. The two transmission positioning rollers 240 located in the middle of the first positioning block 210 roll and press against one side of the outer wall of the transmission belt 230, so that the other side of the outer wall of the transmission belt 230 grinds the upper surface of the Z-shaped steel. This avoids the transmission positioning rollers 240 affecting the sandpaper layer on the outer wall of the transmission belt 230 in grinding the upper surface of the Z-shaped steel.

[0033] The spraying mechanism 400 includes a Z-shaped second positioning block 410 and nozzles 420 spaced apart from the bottom of the second positioning block 410. Each of the two ends of the second positioning block 410 has a nozzle 420 at its bottom, and the middle side of the second positioning block 410 has two nozzles 420. This allows the four nozzles 420 spaced apart on the bottom surface of the Z-shaped second positioning block 410 to evenly and comprehensively spray the paint onto the corner of the upper surface of the Z-shaped steel.

[0034] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A Z-shaped steel surface rust removal and spraying integrated device, characterized in that, It comprises: a work vehicle body configured to be telescopic in the width direction, two sides of the two ends of the work vehicle body are respectively connected with a mobile wheel; a pair of Z-shaped steel polishing mechanisms respectively connected to the bottom of the two sides of the front end of the work vehicle body, for polishing the upper surface of the two Z-shaped steels on both sides of the work vehicle body; a waste gas slag recovery mechanism, comprising a recovery cover respectively covering the two Z-shaped steel polishing mechanisms, a waste gas slag collection bin connected to the work vehicle body, and a gas pump connected to the recovery cover and the waste gas slag collection bin through a pipeline; a pair of spraying mechanisms respectively connected to the bottom of the two sides of the rear end of the work vehicle body, for spraying the upper surface of the two Z-shaped steels on both sides of the work vehicle body.

2. The Z-shaped steel surface rust removal and spraying integrated device according to claim 1, characterized in that, The work vehicle body comprises a left side frame, a right side frame and a plurality of first connecting sleeve pipes, the left side frame and the right side frame are respectively connected with a first connecting rod slidingly inserted into each of the first connecting sleeve pipes, the bottom of the left side frame and the right side frame is provided with a storage rack, both ends of the storage rack are respectively connected to two of the first connecting sleeve pipes, and the gas pump and the waste gas slag collection bin are connected to the storage rack.

3. The Z-shaped steel surface rust removal and spraying integrated device according to claim 2, characterized in that, It also comprises a plurality of second connecting rods, the left side frame and the right side frame are respectively connected with at least one second connecting sleeve pipe, and both ends of each of the second connecting rods are slidingly inserted into two of the second connecting sleeve pipes.

4. The Z-shaped steel surface rust removal and spraying integrated device according to claim 2, characterized in that, At least one pair of the first connecting sleeve pipes arranged in an up-down interval are connected with a baffle.

5. The Z-shaped steel surface rust removal and spraying integrated device according to claim 3, characterized in that, The Z-shaped steel polishing mechanism comprises a Z-shaped first positioning block, an annular transmission belt sleeved on the outer wall of the first positioning block, and a driving mechanism for driving the transmission belt to move back and forth along the Z direction and the surface of the first positioning block, and the outer wall of the transmission belt is provided with a polishing sandpaper layer.

6. The Z-shaped steel surface rust removal and spraying integrated device according to claim 5, characterized in that, The driving mechanism comprises a plurality of transmission positioning rollers arranged in a circumferential direction of the first positioning block and a driving motor for driving each of the transmission positioning rollers to rotate, the driving motor is connected to the side wall of the first positioning block, and each of the transmission positioning rollers is rollingly abutted against the inner wall or the outer wall of the transmission belt.

7. The Z-shaped steel surface rust removal and spraying integrated device according to claim 5, characterized in that, The Z-shaped steel polishing mechanism further comprises a first electric push rod for driving the first positioning block to telescope, and the first electric push rod is connected to the work vehicle body.

8. The Z-steel surface rust removal and spraying integrated device according to claim 1, characterized in that, The spraying mechanism comprises a Z-shaped second positioning block, a nozzle connected to the bottom of the second positioning block, and a pressure pump connected to the work vehicle body, the work vehicle body is provided with a paint storage bin connected to the two pressure pumps through a pipeline, the pressure pump is connected to the second positioning block, and the second positioning block is provided with a spraying cavity in communication with the pressure pump and each of the nozzles.

9. The Z-steel surface rust removal and spraying integrated device according to claim 1, characterized in that, The bottom of the work vehicle body is connected with each of the mobile wheels through a second electric push rod.

10. A construction method of a Z-shaped steel surface rust removal and spraying integrated device, characterized in that, It is performed using the Z-shaped steel surface rust removal and spraying integrated device according to any one of claims 1 to 9, comprising the following steps: placing the work vehicle body between two parallel arranged Z-shaped steels to be rust removed and sprayed; The work vehicle body is moved along the length direction of the two Z-shaped steel, the upper surfaces of the two Z-shaped steel on both sides of the work vehicle body are polished by using the two Z-shaped steel polishing mechanisms on the bottom of both sides of the front end of the work vehicle body, and the waste gas and waste residue after polishing of the two Z-shaped steel polishing mechanisms are sucked by using the waste gas residue recovery mechanism; The upper surfaces of the two Z-shaped steel on both sides of the work vehicle body are sprayed by using the two spraying mechanisms on the bottom of both sides of the rear end of the work vehicle body.

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