Welding box and box body vehicle for welding prestressed pipe pile

Abstract

The utility model provides a welding box and a box vehicle for welding prestressed pipe piles, and relates to the field of building construction. The welding box comprises a box body with a containing cavity and an opening, a box door movably arranged at the opening, and a connecting assembly with a telescopic supporting rod, a first connecting rod, a second connecting rod and a third connecting rod. The third connecting rod is arranged on the box door, the first connecting rod is provided with a first end, a second end and a third end, the first end is hinged to the third connecting rod, the third end is hinged to the edge of the opening, the telescopic supporting rod is hinged to the edge of the opening and the second end, and the second connecting rod is hinged to the third connecting rod and the edge of the opening. According to the welding box provided by the invention, the box door mainly occupies the space in the vertical direction and does not occupy too much space in the horizontal direction, so that constructors can take and place articles more conveniently, and the interference to a construction site can be reduced. The crawler-type chassis enables the box body vehicle to quickly move to the welding position of the pipe pile without assistance of other engineering machinery, so that the construction efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a welding box and a box vehicle for welding prestressed pipe piles. Background Art

[0002] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art.

[0003] Prestressed pipe piles, also known as prestressed concrete pipe piles, are a relatively mature pile foundation construction process. The welding of prestressed pipe piles requires the use of a box truck to place and transport the items required for welding. The welding box of a traditional box truck is connected to the open edge of the box by a hinge. After the box door is flipped open, the box door will occupy the horizontal space, which is not only inconvenient for construction workers to take and place the items required for welding, but also brings obstacles to the surrounding construction sites, making it very inconvenient to use. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a welding box and a box vehicle for welding prestressed pipe piles, aiming to solve the technical problem in the related art that the box door is opened and closed by a hinged flipping method, which is inconvenient to use.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a welding box, comprising:

[0007] The box body has a containing cavity, and the outer peripheral side of the box body is provided with an opening communicating with the containing cavity;

[0008] A door, movably disposed at the opening, for opening or closing the opening;

[0009] A connecting assembly includes a telescopic support rod, a first connecting rod, a second connecting rod and a third connecting rod, wherein the third connecting rod is arranged on the side of the box door facing the accommodating cavity, the first connecting rod has a first end, a second end and a third end, the second end is located between the first end and the third end, the first end is hinged to the third connecting rod, and the third end is hinged to the edge of the opening, one end of the telescopic support rod is hinged to the edge of the opening, and the other end is hinged to the second end, one end of the second connecting rod is hinged to the third connecting rod, and the other end is hinged to the edge of the opening, the first end and the second connecting rod are hinged on the third connecting rod at different positions, and the third end, the telescopic support rod and the second connecting rod are hinged on the edge of the opening at different positions.

[0010] In one embodiment of the first aspect, the opening and the door are both provided in plurality, the number of the openings is the same as the number of the doors, and each of the doors is movably connected to the box body via at least one connecting assembly.

[0011] In one of the embodiments of the first aspect, each of the box doors is movably connected to the box body via a plurality of the connecting assemblies, and the second connecting rods of two adjacent connecting assemblies at the same box door are connected via a reinforcing connecting rod.

[0012] In one embodiment of the first aspect, the first connecting rod includes a first rod segment and a second rod segment connected at an angle, the first rod segment has the first end and the second end, the second rod segment has the third end, the second connecting rod includes a third rod segment and a fourth rod segment connected at an angle, one end of the third rod segment away from the fourth rod segment is hinged to the third connecting rod, and one end of the fourth rod segment away from the third rod segment is hinged to the edge of the opening.

[0013] In one embodiment of the first aspect, the welding box also includes a frame arranged in the accommodating cavity, the frame defines a first storage space and a second storage space, a partition plate is arranged in the second storage space, the partition plate divides the second storage space into an upper storage space and a lower storage space, the first storage space is used to place a welding machine, the upper storage space is used to place a welding robot, and the lower storage space is used to place welding tools.

[0014] In one of the embodiments of the first aspect, a plurality of layer plates are arranged in the lower storage space, the plurality of layer plates are spaced apart in the vertical direction, and each of the layer plates is used to place the welding tool.

[0015] In one of the embodiments of the first aspect, the welding box also includes a plurality of quick clamps, and the plurality of quick clamps are arranged on the same side edge of the partition plate, and two adjacent quick clamps are arranged at intervals, and a fence adapted to the outer peripheral side of the welding robot is provided on the side of the partition plate facing the upper storage space, and the fence is used to abut against one side of the welding robot, and the quick clamp is used to press the side of the welding robot away from the fence to limit the relative movement of the welding robot and the partition plate.

[0016] In one of the embodiments of the first aspect, the welding box also includes a chassis, a track wheel assembly and a track, the chassis is arranged at the bottom of the box body, the track wheel assembly is rotatably arranged on the outer peripheral side of the chassis, and the track is arranged around the track wheel assembly and is driven to rotate by the track wheel assembly.

[0017] In one of the embodiments of the first aspect, the chassis is provided with power-assist hooks on two opposite sides in the moving direction of the chassis.

[0018] In the second aspect, an embodiment of the present application also provides a box vehicle for prestressed pipe pile welding, comprising a welding machine, a welding robot, a welding tool, a wire feeder and the welding box described in any of the above embodiments, wherein the welding machine, the welding robot, the welding tool and the wire feeder are respectively placed in the accommodating cavity.

[0019] The beneficial effects of this application are:

[0020] When using the welding box provided by the present application, since the box door is movably connected to the open edge of the box body through a connecting assembly having a telescopic support rod, a first connecting rod, a second connecting rod and a third connecting rod, when the box door is opened, the box door can move in the vertical direction and remain in the vertical direction with the support of the telescopic support rod. Therefore, the box door mainly occupies the space in the vertical direction and does not occupy too much space in the horizontal direction, which makes it more convenient for construction workers to take and put items and can also reduce interference with the construction site.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, preferred embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a box car from one perspective in some embodiments of the present application is shown;

[0024] Figure 2 Another perspective structural schematic diagram of a box car in some embodiments of the present application is shown;

[0025] Figure 3 It shows a schematic diagram of the structure of a box car in some embodiments of the present application with the top cover opened;

[0026] Figure 4 A schematic diagram of the structure of a box car in some embodiments of the present application with a box door open is shown;

[0027] Figure 5 Shows Figure 4 Schematic diagram of the structure of part A;

[0028] Figure 6 A schematic diagram of the structure of a box car in some embodiments of the present application is shown in which another box door is open;

[0029] Figure 7 Shows Figure 6 The structural diagram of part B;

[0030] Figure 8 A schematic diagram of the assembly structure of the cabinet door and the connection assembly in some embodiments of the present application is shown;

[0031] Fig. 9 A schematic diagram of the structure of a connection assembly from one perspective in some embodiments of the present application is shown;

[0032] Fig.10 Another perspective structural schematic diagram of the connection components in some embodiments of the present application is shown;

[0033] Fig.11 It shows a schematic diagram of the internal structure of a box car in some embodiments of the present application;

[0034] Fig.12 A schematic diagram of the structure of a rack in some embodiments of the present application is shown.

[0035] Description of main component symbols:

[0036] 1000-box car; 100-welded box; 110-box; 111-top cover; 112-box body; 1121-accommodating chamber; 1122-opening; 1123-top opening; 120-box door; 130-connecting assembly; 131-telescopic support rod; 132-first connecting rod; 1321-first rod section; 13211-first end; 13212-second end; 1322-second rod section; 13221-third end; 133-second connecting rod; 1331-third rod section; 1332-fourth rod section; 134-third connecting rod; 140- Strengthening connecting rod; 151-chassis; 1511-power-assisted hook; 152-track wheel assembly; 153-track; 160-frame; 161-first storage space; 162-second storage space; 1621-upper storage space; 1622-lower storage space; 163-partition plate; 164-layer plate; 165-enclosure plate; 170-quick clamp; 180-first sealing strip; 190-second sealing strip; 200-welding machine; 300-welding robot; 400-welding tool; 500-wire feeder; z-vertical direction; x-moving direction. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a 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. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be mentioned that the welding box of the traditional box truck is connected to the open edge of the box by a hinge. After the box door is flipped open, it will occupy the horizontal space, which is not only inconvenient for construction workers to take and put the items needed for welding, but also brings obstacles to the surrounding construction site, making it very inconvenient to use. In addition, the traditional box truck cannot move flexibly and autonomously on the pile foundation site, resulting in low construction efficiency.

[0043] like Figure 1 and Figure 2 As shown, in order to solve the above-mentioned technical problems, an embodiment of the present application provides a welding box 100, which relates to the field of building construction technology, and is mainly used in a box car for prestressed pipe pile welding (hereinafter referred to as the box car 1000), which is used to place items required for prestressed pipe pile welding, such as a welding machine 200, a welding robot 300, a welding tool 400, a wire feeder 500, etc.

[0044] like Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the welding box 100 provided in this embodiment includes: a box body 110, a box door 120 and a connecting assembly 130. The box body 110 has a receiving cavity 1121, and an opening 1122 communicating with the receiving cavity 1121 is provided on the outer peripheral side of the box body 110. The box door 120 is movably provided at the opening 1122 for opening or closing the opening 1122. The connecting assembly 130 includes a telescopic support rod 131, a first connecting rod 132, a second connecting rod 133 and a third connecting rod 134.

[0045] Among them, the third connecting rod 134 is arranged on the side of the box door 120 facing the accommodating chamber 1121, the first connecting rod 132 has a first end 13211, a second end 13212 and a third end 13221, the second end 13212 is located between the first end 13211 and the third end 13221, the first end 13211 is hinged to the third connecting rod 134, the third end 13221 is hinged to the edge of the opening 1122, one end of the telescopic support rod 131 is hinged to the edge of the opening 1122, and the other end is hinged to the second end 13212, one end of the second connecting rod 133 is hinged to the third connecting rod 134, and the other end is hinged to the edge of the opening 1122, the first end 13211 and the second connecting rod 133 are hinged on the third connecting rod 134 at different positions, and the third end 13221, the telescopic support rod 131 and the second connecting rod 133 are hinged on the edge of the opening 1122 at different positions.

[0046] Exemplarily, the telescopic strut 131 is a hydraulic push rod. Of course, it can also be a gas strut or an electric push rod. As long as it is a component that can telescopically support the first connecting rod 132 and provide a buffering effect, it is within the scope of the telescopic strut 131.

[0047] It can be understood that when the welding box 100 provided in this embodiment is used, since the box door 120 is movably connected to the edge of the opening 1122 of the box body 110 through the connecting assembly 130 having the telescopic support rod 131, the first connecting rod 132, the second connecting rod 133 and the third connecting rod 134, when the box door 120 is opened, Figure 4 As shown, the box door 120 can move along the vertical direction z and be maintained in the vertical direction z with the support of the telescopic support rod 131. Therefore, the box door 120 mainly occupies the space in the vertical direction z and does not occupy too much space in the horizontal direction, which makes it more convenient for construction workers to take and put items and can also reduce interference with the construction site.

[0048] like Figure 4 and Figure 6 As shown, in one embodiment, a plurality of openings 1122 and doors 120 are provided, the number of openings 1122 is the same as the number of doors 120 , and each door 120 is movably connected to the housing 110 via at least one connecting assembly 130 .

[0049] Exemplarily, there are four openings 1122 and four doors 120, and the four openings 1122 are distributed on the front, rear, left and right sides of the box body 110. Each door 120 is connected to the edge of the opening 1122 through two connecting components 130. In this way, construction workers can take and place items in four directions by opening different doors 120, which is faster and more convenient to use.

[0050] Of course, the number of openings 1122 can also be set to two, three, five, etc., and the number of connecting components 130 used at each door 120 can be set to one, three, four, etc., which can be selected according to design requirements.

[0051] like Figure 8 As shown, further, each door 120 is movably connected to the box body 110 via a plurality of connecting assemblies 130 , and the second connecting rods 133 of two adjacent connecting assemblies 130 at the same door 120 are connected via a reinforcing connecting rod 140 .

[0052] Exemplarily, the number of connection components 130 used at each door 120 may be two, three, four, etc.

[0053] In this embodiment, by connecting the second connecting rods 133 of two adjacent connecting assemblies 130 at the same box door 120 through a reinforcing connecting rod 140, the reinforcing connecting rod 140 can play a supporting and reinforcing role, so that the connecting assembly 130 is more stable and smooth when moving according to the aforementioned connection relationship, thereby improving the stability and smoothness of the box door 120 in the process of opening and closing the opening 1122, and extending the service life of the welding box 100.

[0054] like Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, in one embodiment, the first connecting rod 132 includes a first rod segment 1321 and a second rod segment 1322 connected at an angle, the first rod segment 1321 has a first end 13211 and a second end 13212, the second rod segment 1322 has a third end 13221, the second connecting rod 133 includes a third rod segment 1331 and a fourth rod segment 1332 connected at an angle, the end of the third rod segment 1331 away from the fourth rod segment 1332 is hinged to the third connecting rod 134, and the end of the fourth rod segment 1332 away from the third rod segment 1331 is hinged to the edge of the opening 1122.

[0055] In this embodiment, since the first rod segment 1321 and the second rod segment 1322 are connected at an angle, and the third rod segment 1331 and the fourth rod segment 1332 are also connected at an angle, after the box door 120 is opened, the length of the first connecting rod 132 and the second connecting rod 133 exposed from the opening 1122 is reduced, so that the box door 120 can be closer to the opening 1122 after opening, further reducing the horizontal space occupied by the box door 120, thereby improving the ease of use of the box car 1000.

[0056] like Figure 6 , Fig.11 and Fig.12 As shown, in one embodiment, the welding box 100 also includes a frame 160 arranged in the accommodating cavity 1121, the frame 160 defines a first storage space 161 and a second storage space 162, a partition plate 163 is arranged in the second storage space 162, the partition plate 163 divides the second storage space 162 into an upper storage space 1621 and a lower storage space 1622, the first storage space 161 is used to place the welding machine 200, the upper storage space 1621 is used to place the welding robot 300, and the lower storage space 1622 is used to place the welding tool 400 (the structure of the welding tool 400 is not shown in the drawings).

[0057] For example, welding tools 400 such as welding guns, welding cables, control cables, protective masks, cutting machines, etc. are tools involved in the welding process. It should be noted that the welding machine 200 is an electrical appliance used to provide power with certain characteristics for welding, and the welding robot 300 is used to weld prestressed pipe piles.

[0058] In this embodiment, the interior of the frame 160 is divided into a first storage space 161, an upper storage space 1621 and a lower storage space 1622, which are used to place the welding machine 200, the welding robot 300 and the welding tool 400 respectively, so that each of the above items has a dedicated storage area, which is convenient for construction personnel to take and store them in time, thereby improving the efficiency of the construction process.

[0059] like Fig.12 As shown, further, a plurality of layer plates 164 are arranged in the lower storage space 1622 , and the plurality of layer plates 164 are spaced apart along the vertical direction z, and each layer plate 164 is used to place a welding tool 400 .

[0060] In this embodiment, by providing a plurality of spaced apart layer plates 164 , it is convenient to place welding tools 400 of different specifications or types, so that the placement of the welding tools 400 is more orderly, and it is convenient for construction workers to take and store them in time.

[0061] like Fig.11 and Fig.12 As shown, further, the welding box 100 also includes a plurality of quick clamps 170, and the plurality of quick clamps 170 are arranged on the same side edge of the partition plate 163, and two adjacent quick clamps 170 are arranged at intervals, and a side of the partition plate 163 facing the upper storage space 1621 is provided with a surrounding plate 165 adapted to the outer peripheral side of the welding robot 300, and the surrounding plate 165 is used to abut against one side of the welding robot 300, and the quick clamps 170 are used to press the side of the welding robot 300 away from the surrounding plate 165 to limit the relative movement of the welding robot 300 and the partition plate 163.

[0062] In this embodiment, the enclosure 165 and the quick clamp 170 respectively apply force to the two opposite sides of the welding robot 300, which can limit the movement of the welding robot 300 and reduce the risk of the welding robot 300 shaking and falling during transportation of the welding box 100, while also ensuring the stability of the box car 1000 during travel.

[0063] At the same time, the use of the quick clamp 170 allows construction workers to take and store the welding robot 300 more quickly, thereby improving the efficiency of the construction process.

[0064] like Figures 1 to 3 As shown, in one embodiment, the welding box 100 further includes a chassis 151, a track wheel assembly 152 and a track 153, wherein the chassis 151 is disposed at the bottom of the box body 110, the track wheel assembly 152 is rotatably disposed on the outer peripheral side of the chassis 151, and the track 153 is disposed around the track wheel assembly 152 and is driven to rotate by the track wheel assembly 152.

[0065] It should be noted that the site for the construction of prestressed pipe piles is usually of poor flatness. The welding box 100 currently using tires is prone to sinking into a pit during movement, or is relatively bumpy during movement.

[0066] However, in this embodiment, the welding box 100 is moved by the crawler 153, and the crawler 153 is more suitable for use in harsh construction sites, and can increase the transportation efficiency of the box vehicle 1000 for welding objects.

[0067] like Figure 1 and Figure 2 As shown, further, the chassis 151 is provided with power-assist hooks 1511 on both opposite sides in the moving direction x, which can be used for rescue in severe working conditions. For example, during the forward or backward process of the welding box 100, if it is stuck in a large pit and difficult to drive out, the power-assist hooks 1511 and ropes can be used to connect other mobile equipment to help the box car 1000 drive out of the pit.

[0068] like Figure 4 and Figure 6 As shown, in one embodiment, the welding box 100 further includes a first sealing strip 180, which is arranged around the edge of the opening 1122 and can abut against the edge of the box door 120, thereby achieving a sealing effect after the box door 120 is closed, so that the box door 120 has a waterproof function and plays a role in protecting items required for welding.

[0069] like Figure 3 As shown, in one embodiment, the box body 110 includes a box body 112 and a top cover 111, the box body 112 is provided with the aforementioned accommodating cavity 1121 and the opening 1122, and the box body 112 is also provided with a top opening 1123, and a side edge of the top cover 111 is connected to the edge of the top opening 1123 through a rotating shaft, so that the top cover 111 can open or close the top opening 1123 in a flipping manner, which is convenient for construction workers to take and place items required for welding.

[0070] like Figure 3 As shown, further, the welding box 100 also includes a second sealing strip 190, which is arranged around the edge of the top opening 1123 and can abut against the edge of the top cover 111, so as to have a sealing effect after the top cover 111 closes the top opening 1123, so that the top cover 111 has a waterproof function and plays a role in protecting the items required for welding.

[0071] like Figure 6 and Fig.11 As shown, an embodiment of the present application provides a box vehicle 1000 for prestressed pipe pile welding, comprising a welding machine 200, a welding robot 300, a welding tool 400, a wire feeder 500 and the welding box 100 mentioned in any of the above embodiments, and the welding machine 200, the welding robot 300, the welding tool 400 and the wire feeder 500 are respectively placed in the accommodating cavity 1121.

[0072] It should be noted that the wire feeder 500 is used to transport the welding wire used in the process of welding the prestressed pipe piles by the welding robot 300.

[0073] In this embodiment, the box truck 1000 loads and transports the welding machine 200, the welding robot 300, the welding tool 400 and the wire feeder 500 through the welding box 100, so as to help the construction workers to better complete the construction process of the prestressed pipe piles.

[0074] It can be understood that since the box vehicle 1000 for prestressed pipe pile welding provided in this embodiment has the welding box 100 in any of the above embodiments, it has all the beneficial effects of the welding box 100, which will not be described in detail here.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A welding box, characterized in that: include: The box body has a containing cavity, and the outer peripheral side of the box body is provided with an opening communicating with the containing cavity; A door, movably disposed at the opening, for opening or closing the opening; A connecting assembly includes a telescopic support rod, a first connecting rod, a second connecting rod and a third connecting rod, wherein the third connecting rod is arranged on the side of the box door facing the accommodating cavity, the first connecting rod has a first end, a second end and a third end, the second end is located between the first end and the third end, the first end is hinged to the third connecting rod, and the third end is hinged to the edge of the opening, one end of the telescopic support rod is hinged to the edge of the opening, and the other end is hinged to the second end, one end of the second connecting rod is hinged to the third connecting rod, and the other end is hinged to the edge of the opening, the first end and the second connecting rod are hinged on the third connecting rod at different positions, and the third end, the telescopic support rod and the second connecting rod are hinged on the edge of the opening at different positions.

2. The welding box according to claim 1, characterized in that The openings and the doors are both provided in plurality, the number of the openings is the same as the number of the doors, and each door is movably connected to the box body via at least one connecting assembly.

3. The welding box according to claim 2, characterized in that Each of the box doors is movably connected to the box body via a plurality of the connecting assemblies, and the second connecting rods of two adjacent connecting assemblies at the same box door are connected via a reinforcing connecting rod.

4. The welding box according to claim 1, characterized in that The first connecting rod includes a first rod segment and a second rod segment connected at an angle, the first rod segment has the first end and the second end, the second rod segment has the third end, the second connecting rod includes a third rod segment and a fourth rod segment connected at an angle, one end of the third rod segment away from the fourth rod segment is hinged to the third connecting rod, and one end of the fourth rod segment away from the third rod segment is hinged to the edge of the opening.

5. The welding box according to any one of claims 1 to 4, characterized in that The welding box also includes a frame arranged in the accommodating cavity, the frame defines a first storage space and a second storage space, a partition plate is arranged in the second storage space, the partition plate divides the second storage space into an upper storage space and a lower storage space, the first storage space is used to place a welding machine, the upper storage space is used to place a welding robot, and the lower storage space is used to place welding tools.

6. The welding box according to claim 5, characterized in that A plurality of layer plates are arranged in the lower storage space, and the plurality of layer plates are spaced apart in the vertical direction, and each layer plate is used for placing the welding tool.

7. The welding box according to claim 5, characterized in that The welding box also includes a plurality of quick clamps, which are arranged on the same side edge of the partition plate, and two adjacent quick clamps are arranged at intervals. A surrounding plate adapted to the outer peripheral side of the welding robot is provided on the side of the partition plate facing the upper storage space, and the surrounding plate is used to abut against one side of the welding robot, and the quick clamp is used to press the side of the welding robot away from the surrounding plate to limit the relative movement of the welding robot and the partition plate.

8. The welding box according to any one of claims 1 to 4, characterized in that The welding box also includes a chassis, a track wheel assembly and a track. The chassis is arranged at the bottom of the box body, the track wheel assembly is rotatably arranged on the outer peripheral side of the chassis, and the track is arranged around the track wheel assembly and is driven to rotate by the track wheel assembly.

9. The welding box according to claim 8, characterized in that The chassis is provided with power-assist hooks on two opposite sides in the moving direction of the chassis.

10. A box car for prestressed pipe pile welding, characterized in that: It comprises a welding machine, a welding robot, a welding tool, a wire feeder and a welding box according to any one of claims 1 to 9, wherein the welding machine, the welding robot, the welding tool and the wire feeder are respectively placed in the accommodating cavity.

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