A fire tube carrier

Abstract

The utility model relates to fire tube dismounting technical field, especially a kind of fire tube carrier, including vehicle body, the bottom surface corner of vehicle body is all provided with gyro wheel, and the front end of vehicle body top surface is detachably provided with front support piece;Vehicle body top surface rear end is fixedly provided with rear support piece;Push rod is fixedly provided on the side surface of rear support piece away from front support piece;Vehicle body middle part is provided with let hole, and let hole is arranged between front support piece and rear support piece.The gyro wheel design of the fire tube carrier makes vehicle body can move flexibly, changes high-strength operation mode of artificial carrying, fits mechanization operation demand, when dismounting fire tube, can use the fire tube carrier to translate fire tube, avoids the phenomenon of skewing or oblique pulling when installing using lifting gourd or existing upside down, improves blast furnace maintenance efficiency and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of fire tube disassembly and assembly technology, and in particular to a fire tube transport vehicle. Background Technology

[0002] As a key component of the blast furnace ironmaking system, the stability of the connection between the fire tube elbows and the lower section of the blast furnace blast system plays a decisive role in the efficient and safe operation of the blast furnace. Currently, the connection between the fire tube elbows and the lower section of the blast furnace blast system generally adopts a pin, bolt, and wedge connection method. This connection structure can ensure the connection strength to a certain extent, but it requires manual operation during actual disassembly.

[0003] During disassembly, operators need to use a wrench and a sledgehammer to remove the bolts, which is not only labor-intensive but also inefficient. Regarding the transport and installation of the fire tubes, since the circular track for the blast furnace blast system is far from the furnace shell, current technology typically uses hoists or chain hoists for transport and installation.

[0004] However, the aforementioned existing technologies have obvious shortcomings. During the hoisting or chain hoisting process, there is a tendency for the hoist to pull or drag at an angle, and the front end of the fire tube lacks effective fixation, which can easily lead to damage to the contact surface of the fire tube vent, resulting in rework, air leakage or shutdown after re-venting, and even serious accidents such as the vent burning through, affecting production efficiency. Utility Model Content

[0005] In response to the problems of uneven pulling and dragging during hoisting or chain hoisting, and the lack of effective fixation at the front end of the fire tube, which easily leads to damage to the contact surface of the fire tube vent, resulting in rework, air leakage or shutdown after re-venting, and even serious accidents such as vent burn-through, thus affecting production efficiency, this utility model provides a fire tube transport vehicle.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A fire tube transport vehicle includes a body with rollers at the corners of its bottom surface. A front support is detachably mounted on the front of the top surface of the body, and a rear support is fixedly mounted on the rear of the top surface. A push rod is fixedly mounted on the side of the rear support away from the front support. A clearance hole is provided in the middle of the body, positioned between the front and rear supports. The roller design of this fire tube transport vehicle allows for flexible movement, changing the high-intensity manual handling process and meeting the needs of mechanized operation. The detachable front support and fixed rear support, combined with the clearance hole in the middle, not only provide stable support for the fire tubes, preventing damage from shaking and collisions during transport, but also accommodate fire tubes of different sizes, effectively solving the problem of damage to the fire tube tuyeres during installation. When installing or removing fire tubes, the vehicle can be used to move the fire tubes horizontally, avoiding the need for hoists or tilting and pulling during installation, thus improving blast furnace maintenance efficiency and production continuity. The push rod is designed for easy operation.

[0008] Preferably, the vehicle body includes a front crossbar and a rear crossbar; insert rods are fixedly installed on both sides of the bottom surface of the front crossbar; sleeves are fixedly installed on both sides of the rear crossbar facing the rear crossbar; the insert rods are slidably installed in the sleeves and can be fixed by a pin; the front support is located in the middle of the top surface of the front crossbar; the rear support is located in the middle of the top surface of the rear crossbar; the space enclosed by the front crossbar, the rear crossbar, the two sleeves, and the two insert rods forms a clearance hole. This fire tube transport vehicle achieves the adjustment of the vehicle body length through the sliding fit of the insert rods and sleeves and the pin fixing structure, which can adapt to the stable support and transport of fire tubes of different lengths, significantly improving the equipment versatility; the split adjustable design of the front and rear crossbars, together with the centered installation of the front and rear support components, can not only adjust the support spacing according to the fire tube size during transport to avoid fire tube shaking and collision, but also flexibly position during installation operations, reducing the risk of damage to the fire tube tuyeres contact surface, and further enhance the stability during transport, effectively reducing safety hazards and improving blast furnace maintenance efficiency and production continuity.

[0009] Preferably, two vertical plates are spaced apart at the center of the top surface of the front crossbar; the two vertical plates are arranged in parallel; the front support member is located between the two vertical plates; the front support member is connected to the vertical plates by a second pin. The two parallel vertical plates on the top surface of the front crossbar, connected by a second pin, form a detachable connection structure. During the transport of the fire tubes, the front support member can support the fire tubes and maintain stability; disassembly of the front support member can be quickly completed by simply pulling out the second pin. Compared with traditional fixing methods, this greatly shortens installation and disassembly time and improves operational efficiency. Simultaneously, this modular connection design facilitates the replacement of suitable front support members according to different fire tube specifications, improving the versatility of the fire tube transport vehicle, reducing equipment maintenance costs and repair time, and providing a reliable guarantee for the efficient and safe transport of blast furnace air supply fire tubes.

[0010] Preferably, the front support includes a fixed rod; the fixed rod is connected to the vertical plate via a second pin; and a circular arc plate is fixedly installed at the top of the fixed rod. The front support adopts a structural design of "fixed rod connected to vertical plate, with a circular arc plate at the top," and is connected to the vertical plate via a second pin, so that the fixed rod is fixed between the two vertical plates; the circular arc plate contacts the surface of the fire tube in an arc shape, which increases the contact area compared to a flat support, improves the support stability, and prevents the fire tube from shaking or colliding during transportation; this structure can not only adapt to fire tubes of different diameters, enhancing the versatility of the fire tube transport vehicle, but also the circular arc transition design can avoid sharp edges from scratching the surface of the fire tube, maximize the protection of the fire tube tuyeres contact surface, reduce the risk of installation damage caused by transportation, and ensure the efficiency and safety of blast furnace maintenance operations.

[0011] Preferably, the rear support includes an H-shaped frame fixedly installed in the middle of the top surface of the rear crossbar; a second arc plate is fixedly installed at the upper middle part of the H-shaped frame. The rear support adopts a structural design of "H-shaped frame with second arc plate". The H-shaped frame is firmly fixed in the middle of the top surface of the rear crossbar. With its mechanical structure, it provides a solid and stable support foundation for the fire tube, effectively dispersing the pressure brought by the weight of the fire tube and avoiding shaking and displacement caused by unstable support during transportation. The second arc plate at the upper middle part is precisely matched with the curvature of the outer surface of the fire tube. The arc surface contact significantly increases the force-bearing area, further enhancing the reliability of the support and preventing the fire tube from slipping or being damaged by collision. At the same time, the structure is simple and strong, which facilitates the quick installation and disassembly of the fire tube and can be adapted to various specifications of fire tubes. It effectively solves the problems of fire tube damage and poor stability caused by traditional support methods, greatly improves the efficiency and safety of fire tube transportation, and ensures the smooth progress of blast furnace maintenance.

[0012] Preferably, the length of the rear crossbar is greater than the length of the front crossbar. This design, with the rear crossbar being longer than the front crossbar, creates a narrower front and wider rear body layout, which suits the rearward center of gravity of the fire tubes. This allows for a more rational distribution of the fire tubes' weight during transport, effectively improving vehicle stability and avoiding the risk of rollover due to a shift in the center of gravity. This structural difference provides more adequate support to the rear end of the fire tubes, and combined with the stable structure of the rear support components, reduces the swaying amplitude during transport, protecting the fire tube tuyeres from collision damage. Simultaneously, the narrower front and wider rear design facilitates flexible turning and movement in confined spaces such as blast furnace tuyeres, overcoming site limitations, improving the applicability of the transport vehicle in complex operating environments, and significantly enhancing the safety and efficiency of fire tube transport operations.

[0013] Preferably, rollers are provided on both sides of the bottom surface of the rear crossbar.

[0014] Preferably, the car body is equipped with a height fine-tuning mechanism for adjusting the car body height. This mechanism allows for precise adjustment of the car body height according to the actual operational needs of the blast furnace tuyere platform and the installation position of the fire tubes. This effectively prevents collisions between the fire tubes and components such as sleeves and tuyeres during installation due to height deviations, significantly reducing the risk of damage to the fire tube and tuyere contact surfaces. Furthermore, height fine-tuning reduces the height difference during lifting or manual handling, lowering the difficulty of relocation, improving operational efficiency, and effectively preventing improper operations such as skewed pulling caused by unsuitable height. This significantly enhances the safety and accuracy of fire tube handling operations, providing a reliable guarantee for the efficient maintenance of the blast furnace blasting system.

[0015] Preferably, the height fine-tuning mechanism includes a threaded hole one fixedly mounted on the rear crossbar; a screw one internally threaded in the threaded hole one; the height fine-tuning mechanism also includes a threaded hole two fixedly mounted on the insert rod; a screw two internally threaded in the threaded hole two. The height fine-tuning mechanism adopts a dual-adjustment design of "screw one and screw two". By turning screw one and screw two in the threaded holes one and two respectively, the height of the front and rear ends of the car body can be finely adjusted to accurately adapt to different working environments and fire tube installation requirements. This split adjustment method can flexibly cope with complex working conditions such as uneven ground and height differences of the blast furnace tuyeres platform, ensuring that the fire tubes remain horizontal during transportation and installation, effectively avoiding fire tube shaking and collisions caused by tilting. At the same time, the threaded transmission structure provides stable and reliable support force, preventing the car body from settling or shifting under load, enhancing the safety and stability of fire tube transportation. In addition, the mechanism has a simple structure and is easy to operate, and can quickly complete the height adjustment without complicated tools, significantly improving work efficiency and reducing equipment damage and safety risks caused by unsuitable height.

[0016] Preferably, threaded hole one is located on the rear crossbar between the roller and the H-frame; threaded hole two is located on the top surface of the insertion rod, and at one end near the front crossbar. This facilitates alignment with the fire tube's center of gravity, ensuring the stability of the fire tube transport vehicle when adjusting the height.

[0017] As can be seen from the above technical solutions, the advantages of this utility model include: the roller design of the fire tube transport vehicle allows the vehicle body to move flexibly, changing the high-intensity operation mode of manual handling and meeting the needs of mechanized operation; the front support is detachable and the rear support is fixed, and with the central clearance hole, it can not only stably support the fire tube and avoid damage caused by shaking and collision during transportation, but also adapt to fire tubes of different sizes, effectively solving the problem of damage to the fire tube tuyeres contact surface during installation; when disassembling and assembling the fire tube, the fire tube transport vehicle can be used to move the fire tube horizontally, avoiding the phenomenon of using hoists or pulling at an angle during installation, thus improving the efficiency of blast furnace maintenance and production continuity. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a structural schematic diagram of the rear crossbar, rear support member, and push rod of this utility model;

[0022] Figure 4 This is a schematic diagram of the front support component of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1-Car body, 2-Roller, 3-Front support, 4-Rear support, 5-Push rod, 6-Leaning hole, 7-Threaded hole one, 8-Screw one, 9-Threaded hole two, 10-Screw two;

[0024] 101-Front crossbar, 102-Rear crossbar, 103-Insertion rod, 104-Sleeve, 105-Pin shaft one, 106-Upright plate; 301-Fixing rod, 302-Arc plate one; 401-H-shaped frame, 402-Arc plate two. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] like Figure 1 , Figure 2 As shown, a fire tube transport vehicle includes a vehicle body 1, with rollers 2 provided at the bottom corners of the vehicle body 1. The vehicle body 1 is characterized by having a front support member 3 detachably provided at the front end of the top surface of the vehicle body 1; a rear support member 4 fixedly provided at the rear end of the top surface of the vehicle body 1; a push rod 5 fixedly provided on the side of the rear support member 4 away from the front support member 3; and a clearance hole 6 provided in the middle of the vehicle body 1, with the clearance hole 6 located between the front support member 3 and the rear support member 4.

[0027] The roller design 2 of this fire tube transport vehicle allows the vehicle body 1 to move flexibly, changing the high-intensity operation mode of manual handling and meeting the needs of mechanized operation. The front support 3 is detachable, and the rear support 4 is fixed. With the help of the central clearance hole 6, it can not only stably support the fire tube and avoid damage caused by shaking and collision during transportation, but also adapt to fire tubes of different sizes, effectively solving the problem of damage to the fire tube tuyeres contact surface during installation. When disassembling and assembling fire tubes, the fire tube transport vehicle can be used to move the fire tube horizontally, avoiding the skewed pulling phenomenon that occurs when using hoists or chain hoists during installation, thus improving the efficiency of blast furnace maintenance and production continuity. The push rod 5 is set for easy operation.

[0028] like Figure 2 and Figure 3 As shown, the vehicle body 1 includes a front crossbar 101 and a rear crossbar 102; insert rods 103 are fixedly installed on both sides of the bottom surface of the front crossbar 101; sleeves 104 are fixedly installed on both sides of the rear crossbar 102 facing the rear crossbar 102; the insert rods 103 are slidably installed in the sleeves 104 and can be fixed by a pin 105; a front support member 3 is installed in the middle of the top surface of the front crossbar 101; a rear support member 4 is installed in the middle of the top surface of the rear crossbar 102; the space enclosed by the front crossbar 101, the rear crossbar 102, the two sleeves 104, and the two insert rods 103 forms a clearance hole 6. Two upright plates 106 are spaced apart in the middle of the top surface of the front crossbar 101; the two upright plates 106 are arranged in parallel.

[0029] The fire tube transport vehicle achieves adjustable length of the vehicle body 1 through the sliding fit between the insert rod 103 and the sleeve 104 and the fixing structure of the pin shaft 105. It can stably support and transport fire tubes of different lengths, significantly improving the versatility of the equipment. The split adjustable design of the front crossbar 101 and the rear crossbar 102, together with the centrally installed front support 3 and rear support 4, can not only adjust the support spacing according to the size of the fire tube during the transport process to avoid the fire tube shaking and collision, but also flexibly position it during the installation operation, reducing the risk of damage to the contact surface of the fire tube tuyeres. It also further enhances the stability during the transport process, effectively reduces safety hazards, and improves the efficiency of blast furnace maintenance and production continuity.

[0030] In the above configuration, the length of the rear crossbar 102 is greater than the length of the front crossbar 101. Rollers 2 are installed on both sides of the bottom surface of the rear crossbar 102. The design of the rear crossbar 102 being longer than the front crossbar 101 creates a car body 1 layout that is narrower at the front and wider at the rear. This design is suitable for the rearward center of gravity of the fire tubes, allowing for a more reasonable distribution of the fire tubes' weight during transport, effectively improving the stability of the car body and avoiding the risk of tipping over due to a shift in the center of gravity. This structural difference provides more adequate support for the rear end of the fire tubes. Combined with the stable structure of the rear support component 4, it reduces the swaying amplitude during fire tube transport and protects the fire tube tuyeres from collision damage. At the same time, the narrower front and wider rear shape also facilitates flexible turning and movement in narrow spaces such as blast furnace tuyeres platforms, overcoming site limitations, improving the applicability of the transport vehicle in complex operating environments, and significantly enhancing the safety and efficiency of fire tube transport operations.

[0031] The front support member 3 is positioned between the two upright plates 106; the front support member 3 is connected to the upright plates 106 via a second pin 107. The rear support member 4 includes an H-shaped frame 401 fixedly mounted in the middle of the top surface of the rear crossbar 102; an arc-shaped plate 402 is fixedly mounted at the upper middle part of the H-shaped frame 401. Figure 4 As shown, the front support member 3 includes a fixing rod 301; the fixing rod 301 is connected to the upright plate 106 through a second pin 107; and an arc plate 302 is fixedly installed at the top of the fixing rod 301.

[0032] Two parallel vertical plates 106 are installed on the top surface of the front crossbar 101 and connected to the front support member 3 by a pin 2, forming a detachable connection structure. When transporting the fire tube, the front support member 3 can support the fire tube and maintain stability. When disassembling the front support member 3, it can be done quickly by simply pulling out the pin 2. Compared with the traditional fixing method, it greatly shortens the installation and disassembly time and improves the work efficiency. At the same time, this modular connection design makes it easy to replace the front support member 3 with a suitable one according to different fire tube specifications, which improves the versatility of the fire tube transport vehicle, reduces equipment maintenance costs and maintenance time, and provides a reliable guarantee for the efficient and safe transport of the blast furnace air supply device fire tube. The front support component 3 adopts a structural design of "fixed rod 301 connecting vertical plate 106 and arc plate 302 at the top". It is connected to vertical plate 106 through pin 2, so that fixed rod 301 is fixed between two vertical plates 106. The arc plate 302 contacts the surface of the fire tube in an arc shape. Compared with the flat support, it increases the contact area, improves the support stability, and prevents the fire tube from shaking or colliding during transportation. This structure can not only adapt to fire tubes of different diameters and enhance the versatility of the fire tube transport vehicle, but also the arc transition design can avoid the sharp edges from scratching the surface of the fire tube, protect the fire tube tuyeres contact surface to the greatest extent, reduce the risk of installation damage caused by transportation, and ensure the efficiency and safety of blast furnace maintenance operations. The rear support component 4 adopts a structural design of "H-shaped frame 401 paired with arc plate 402". The H-shaped frame 401 is firmly fixed to the middle of the top surface of the rear crossbar 102. With its mechanical structure, it provides a solid and stable support foundation for the fire tube, effectively dispersing the pressure brought by the weight of the fire tube and avoiding shaking and displacement caused by unstable support during transportation. The arc plate 402 at the upper middle part is precisely matched with the curvature of the outer surface of the fire tube. The arc surface contact significantly increases the force-bearing area, further enhancing the reliability of the support and preventing the fire tube from slipping or being damaged by collision. At the same time, the structure is simple and strong, which facilitates the quick installation and disassembly of the fire tube and can be adapted to various specifications of fire tubes. It effectively solves the problems of fire tube damage and poor stability caused by traditional support methods, greatly improves the efficiency and safety of fire tube transportation, and ensures the smooth progress of blast furnace maintenance.

[0033] To adjust the height of the vehicle body 1, a height fine-tuning mechanism is provided on the vehicle body 1. The height fine-tuning mechanism includes a threaded hole 7 fixedly mounted on the rear crossbar 102; a screw 8 is threaded into the threaded hole 7; the height fine-tuning mechanism also includes a threaded hole 9 fixedly mounted on the insert rod 103; a screw 10 is threaded into the threaded hole 9. The threaded hole 7 is located on the rear crossbar 102 between the roller 2 and the H-shaped frame 401; the threaded hole 9 is located on the top surface of the insert rod 103, and is located at one end near the front crossbar 101.

[0034] The car body 1 is equipped with a height fine-tuning mechanism, which can precisely adjust the height of the car body according to the actual operating requirements of the blast furnace tuyere platform and the installation position of the fire tubes. This effectively avoids collisions between the fire tubes and components such as the small sleeves and tuyeres during installation due to height deviations, greatly reducing the risk of damage to the contact surfaces of the fire tubes and tuyeres. Through height fine-tuning, the height difference of lifting tools or manual handling can be reduced, the difficulty of relocation can be reduced, and the operating efficiency can be improved. It also effectively avoids violations such as skewed pulling caused by unsuitable height, significantly enhancing the safety and accuracy of fire tube handling operations, and providing a reliable guarantee for the efficient maintenance of the blast furnace blasting system. The height fine-tuning mechanism adopts a dual-adjustment design with "screw 8 and screw 10". By screwing screw 8 and screw 10 into threaded holes 7 and 9 respectively, the height of the front and rear ends of the car body 1 can be finely adjusted to accurately adapt to different working environments and fire tube installation requirements. This split adjustment method can flexibly cope with complex working conditions such as uneven ground and height differences of the blast furnace tuyeres platform, ensuring that the fire tubes remain horizontal during transportation and installation, effectively avoiding shaking and collisions of the fire tubes caused by tilting. At the same time, the threaded transmission structure provides stable and reliable support, preventing the car body 1 from settling or shifting under load, enhancing the safety and stability of fire tube transportation. In addition, the mechanism has a simple structure and is easy to operate, and can quickly complete the height adjustment without complicated tools, significantly improving work efficiency and reducing equipment damage and safety risks caused by unsuitable height.

[0035] In other alternative embodiments, the height fine-tuning mechanism includes four jacks, which are respectively installed at the corners of the bottom surface of the vehicle body 1. When the jacks are retracted, the rollers 2 can contact the ground.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fire tube transport vehicle, comprising a vehicle body (1), wherein rollers (2) are provided at the corners of the bottom surface of the vehicle body (1), characterized in that, The front end of the top of the vehicle body (1) is detachably provided with a front support member (3); the rear end of the top surface of the vehicle body (1) is fixedly provided with a rear support member (4); a push rod (5) is fixedly provided on the side of the rear support member (4) away from the front support member (3); a clearance hole (6) is provided in the middle of the vehicle body (1), and the clearance hole (6) is located between the front support member (3) and the rear support member (4).

2. The fire tube transport vehicle according to claim 1, characterized in that, The vehicle body (1) includes a front crossbar (101) and a rear crossbar (102); both sides of the bottom surface of the front crossbar (101) are fixedly provided with insert rods (103); both sides of the rear crossbar (102) facing the rear crossbar (102) are fixedly provided with sleeves (104); the insert rods (103) are slidably provided in the sleeves (104) and can be fixed by a pin (105); the front support member (3) is provided in the middle of the top surface of the front crossbar (101); the rear support member (4) is provided in the middle of the top surface of the rear crossbar (102); the space enclosed by the front crossbar (101), the rear crossbar (102), the two sleeves (104) and the two insert rods (103) forms a clearance hole (6).

3. The fire tube transport vehicle according to claim 2, characterized in that, Two upright plates (106) are spaced apart at the center of the top surface of the front crossbar (101); the two upright plates (106) are arranged in parallel; the front support member (3) is arranged between the two upright plates (106); the front support member (3) is connected to the upright plates (106) through the second pin (107).

4. The fire tube transport vehicle according to claim 3, characterized in that, The front support member (3) includes a fixing rod (301); the fixing rod (301) is connected to the upright plate (106) through a second pin (107); an arc plate (302) is fixedly installed at the top of the fixing rod (301).

5. The fire tube transport vehicle according to claim 2, characterized in that, The rear support member (4) includes an H-shaped frame (401) fixedly installed in the middle of the top surface of the rear crossbar (102); an arc plate (402) is fixedly installed at the upper end of the middle part of the H-shaped frame (401).

6. The fire tube transport vehicle according to claim 5, characterized in that, The length of the rear crossbar (102) is greater than the length of the front crossbar (101).

7. The fire tube transport vehicle according to claim 6, characterized in that, Rollers (2) are installed on both sides of the bottom surface of the rear crossbar (102).

8. The fire tube transport vehicle according to claim 7, characterized in that, The vehicle body (1) is equipped with a height fine-tuning mechanism for adjusting the height of the vehicle body (1).

9. The fire tube transport vehicle according to claim 8, characterized in that, The height fine-tuning mechanism includes a threaded hole 1 (7) fixedly installed on the rear crossbar (102); a screw 1 (8) is provided in the internal thread of the threaded hole 1 (7); the height fine-tuning mechanism also includes a threaded hole 2 (9) fixedly installed on the insert rod (103); a screw 2 (10) is provided in the internal thread of the threaded hole 2 (9).

10. The fire tube transport vehicle according to claim 9, characterized in that, Threaded hole one (7) is set on the rear crossbar (102) between the roller (2) and the H-shaped frame (401); threaded hole two (9) is set on the top surface of the insert (103) and is located at one end near the front crossbar (101).

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