A combined pig transport vehicle

Abstract

The present invention discloses a combined pipe cleaner transport vehicle, which belongs to the technical field of oil and natural gas pipeline cleaning, and includes one or more vehicle body units, wherein the vehicle body units include a traveling bracket, a connecting bracket and an adjusting bracket, and an arc plate assembly is installed on the adjusting bracket; the traveling bracket includes a vehicle body riser, and a first adjusting hole is provided on the vehicle body riser; the adjusting bracket includes an adjusting column, and a second adjusting hole is provided on the adjusting column; a plurality of first adjusting holes and / or second adjusting holes are provided in the height direction, and a supporting bolt rod is provided through the first adjusting hole and the second adjusting hole corresponding to the height; the connecting bracket is installed on the vehicle body riser at the end. The present invention connects different vehicle body units through the connecting bracket, and adjusts the height of the arc plate assembly through the first adjusting hole and the second adjusting hole, which can not only realize the extension of the length of the arc plate assembly, but also conveniently make the arc plate assembly at the same height, and can be well applied to the transportation of pipe cleaners of different lengths.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and natural gas pipeline cleaning, in particular to a combined pig transport vehicle. Background Art

[0002] During operation, long-distance oil and gas pipelines accumulate large amounts of impurities due to the release of components from the transported medium and corrosion of the pipe itself. This accumulation of impurities can affect pipeline transportation efficiency. To ensure efficient operation, pipeline pigging is performed regularly. Pipeline pigs, driven by the thrust of the transported medium, travel through the pipeline from upstream stations to downstream stations. Pigging and internal inspection operations involve pig delivery and collection operations. Delivery operations at upstream stations involve loading pigs into delivery barrels, while collection operations at downstream stations involve removing pigs from the collection barrels. Pig transporters are used to transport pigs during pipeline cleaning within natural gas and oil stations. Before cleaning begins, the pigs are transported to the quick-opening blind plate of the delivery device. After cleaning is complete, the pigs are transported from the collection device to a designated location.

[0003] At present, homemade transport devices or purchased platform vehicles with lifting functions are commonly used in pipe cleaning operations. Since the size of these transport vehicles is quite different from the space required for the pipe cleaning device or the operation is relatively complicated, many problems arise during use. For example, when using some hydraulic platform vehicles to transport the pipe cleaning device, the hydraulic system may leak oil or reduce the load; or when transporting long-sized intelligent pipe cleaning devices, due to the large length required, general transport vehicles cannot operate them due to the limited space; or some purchased transport devices are too large to transport the pipe cleaning device to the designated location due to the limited space at the pipe cleaning site, which brings a lot of inconvenience to the operators.

[0004] Chinese patent application number CN209715959U discloses a pipeline pig ball-transmitting and receiving trolley. This trolley features a monolithic structure and is raised and lowered by a hydraulically driven lifting mechanism to accommodate varying heights. This can restrict operation when transporting long pigs. Chinese patent application number CN114932939A discloses an electrically driven ball-transmitting and receiving trolley. Its main structure utilizes an electric drive mechanism to address both travel and lifting issues, but it does not address the transport of long pigs.

[0005] In summary, the existing ball-receiving and sending trolley has a lifting function, but due to its integral structure, it cannot be adjusted according to the length of the pipe pig, and thus cannot be well applied to long-sized pipe pigs, causing inconvenience in application. Summary of the Invention

[0006] The purpose of the present invention is to provide a combined pipe cleaner transport vehicle to solve the problems existing in the above-mentioned prior art. By installing a connecting bracket on the vehicle body riser, a detachable connection is achieved between different vehicle body units, and the height of the arc plate assembly is adjusted by correspondingly adjusting the first adjustment hole on the vehicle body riser and the second adjustment hole on the adjustment column. This can not only achieve the length expansion of the arc plate assembly, but also conveniently make the expanded arc plate assembly at the same height, which can be well adapted to the transportation of pipe cleaners of different lengths.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a combined pipe cleaner transport vehicle, comprising one or more vehicle body units, wherein the vehicle body unit comprises a traveling bracket, a connecting bracket and an adjusting bracket, and an arc plate assembly is installed on the adjusting bracket; the traveling bracket comprises a vehicle body vertical tube, and a first adjusting hole is provided on the vehicle body vertical tube; the adjusting bracket comprises an adjusting column, and a second adjusting hole is provided on the adjusting column; a plurality of the first adjusting holes and / or the second adjusting holes are provided in the height direction, and a supporting bolt rod is passed through the first adjusting hole and the second adjusting hole corresponding to the height; the connecting bracket is installed on the vehicle body vertical tube at the end, and different vehicle body units are connected through the connecting bracket, and the arc plate assemblies of different vehicle body units are connected at the same height.

[0009] Preferably, the first adjustment holes are arranged at equal intervals on the vehicle body vertical tube, the second adjustment holes are arranged at equal intervals on the adjustment column, and the support bolt rod is a bolt that passes through the first adjustment hole and the second adjustment hole and is locked by a nut.

[0010] Preferably, a first mounting hole is provided on the vehicle body vertical tube, and the connecting bracket includes a connecting vertical plate and a connecting horizontal plate arranged opposite to the connecting vertical plate, the connecting horizontal plate is provided with a second mounting hole corresponding to the first mounting hole, the connecting horizontal plate is buckled on the vehicle body vertical tube, the first mounting hole and the second mounting hole are fastened by bolts, a third mounting hole is provided on the connecting vertical plate, and the connecting vertical plates corresponding to different vehicle body unit heights are fastened by bolts.

[0011] Preferably, the aperture and spacing of the first mounting hole and the first adjustment hole are consistent, and when installing or adjusting the height of the adjustment bracket, the connecting bracket is used as a limiting structure to support the bottom end of the adjustment bracket.

[0012] Preferably, the walking bracket includes a long body tube arranged in parallel and several short body tubes connected to the long body tube. A wheel connecting plate is provided below the connection between the long body tube and the short body tube. The wheel connecting plate is connected to the long body tube and the short body tube at the same time, and the wheel connecting plate is connected to a universal wheel.

[0013] Preferably, the vehicle body vertical tube is connected above the connection between the vehicle body long tube and the vehicle body short tube, and a vehicle body reinforcement tube is connected between adjacent vehicle body vertical tubes. The vehicle body reinforcement tube is parallel to the vehicle body long tube, and the installation height of the connecting bracket is within the installation height range of the vehicle body reinforcement tube.

[0014] Preferably, the adjustment bracket includes a connecting plate, a crossbeam arranged on the connecting plate, and the adjustment column arranged opposite to the crossbeam, and the connecting plate is used to connect the arc plate assembly.

[0015] Preferably, the lateral spacing of the adjustment columns is smaller than the lateral spacing of the vehicle body standpipes, the adjustment columns are connected to the inner side of the vehicle body standpipes, and the crossbeam, the adjustment columns and the vehicle body standpipes constitute a support frame.

[0016] Preferably, the arc plate assembly includes an arc support frame and a supporting arc plate installed on the arc support frame, and the arc support frame is provided with multiple arc support frames in the length direction of the supporting arc plate. The arc support frame includes a base plate and an arc support plate and a reinforcement plate connected to the base plate. The reinforcement plate is perpendicular to the arc support plate, and the base plate is fastened to the connecting plate by bolts.

[0017] Preferably, long U-shaped handles are connected to both sides of the supporting arc plate.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] (1) The present invention achieves detachable connection between different car body units by installing a connecting bracket on the car body riser, and adjusts the height of the arc plate assembly by correspondingly adjusting the first adjustment hole on the car body riser and the second adjustment hole on the adjustment column. This can not only achieve the length expansion of the arc plate assembly, but also conveniently make the expanded arc plate assembly at the same height, which is well suitable for the transportation of pigs of different lengths and sizes.

[0020] (2) The present invention arranges the wheel connecting plate below the connection between the long tube and the short tube of the vehicle body. On the basis of using the wheel connecting plate to connect the universal wheel, the wheel connecting plate can be used to strengthen the connection strength between the long tube and the short tube of the vehicle body, thereby improving the overall rigidity of the running frame and ensuring its load-bearing capacity. In addition, the vehicle body riser is connected above the connection between the long tube and the short tube of the vehicle body, further improving the connection strength between the long tube and the short tube of the vehicle body, further improving the overall rigidity of the running frame and ensuring its load-bearing capacity.

[0021] (3) In the present invention, a vehicle body reinforcement tube is connected between adjacent vehicle body risers, and the installation height of the connecting bracket is within the installation height range of the vehicle body reinforcement tube. In other words, the vehicle body reinforcement tube is connected to the vehicle body riser to form a stable integral structure. This integral structure is used to connect another vehicle body unit via the connecting bracket, thereby ensuring the stability of the connection between different vehicle body units and preventing the different vehicle body units from being disconnected at the connecting bracket when moving together.

[0022] (4) The lateral spacing of the adjusting columns of the present invention is smaller than the lateral spacing of the vehicle body risers. By connecting the adjusting columns to the inner side of the vehicle body risers, the crossbeam, the adjusting columns, and the vehicle body risers form a support frame. The support frame has strong structural stability and can achieve stable support for the arc plate assembly and the pipe cleaner it carries. At the same time, since the adjusting columns and the vehicle body risers adopt a fitting connection method, compared with the plug-in connection method, pipe column materials of the same specifications can be used, thereby further improving the supporting capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the vehicle body unit structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the walking support structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the connecting bracket structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the adjusting bracket of the present invention;

[0029] Figure 6 This is a schematic structural diagram of the arc plate assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the arc-shaped support frame of the present invention;

[0031] Among them, 1. body unit; 2. walking bracket; 3. connecting bracket; 4. adjusting bracket; 5. arc plate assembly; 6. universal wheel; 7. wheel connecting plate; 8. body vertical tube; 81. first adjustment hole; 82. first mounting hole; 9. body reinforcement tube; 10. body short tube; 11. body long tube; 12. connecting horizontal plate; 121. second mounting hole; 13. connecting vertical plate; 131. third mounting hole; 14. adjusting column; 141. second adjustment hole; 15. crossbeam; 16. connecting plate; 17. arc support frame; 171. bottom plate; 172. arc support plate; 173. reinforcement plate; 18. supporting arc plate; 19. long U-shaped handle. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a combined pipe cleaner transport vehicle to solve the problems existing in the prior art. By installing a connecting bracket on the vehicle body riser, different vehicle body units can be detachably connected, and the height of the arc plate assembly can be adjusted by correspondingly adjusting the first adjustment hole on the vehicle body riser and the second adjustment hole on the adjustment column. This can not only achieve the length expansion of the arc plate assembly, but also conveniently make the expanded arc plate assembly at the same height, which can be better suitable for the transportation of pipe cleaners of different lengths.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 6As shown, the present invention provides a modular pig transport vehicle, comprising one or more vehicle body units 1. The number of connected vehicle body units 1 is appropriately configured based on the length of the pig being transported, facilitating the transport of pigs of varying lengths. Vehicle body unit 1 includes a traveling frame 2, a connecting frame 3, and an adjusting frame 4. The adjusting frame 4 is mounted with an arc plate assembly 5, which is used to support the pig. The adjusting frame 4 is mounted on the traveling frame 2 and moves with the traveling frame 2, thereby driving the pig mounted on the arc plate assembly 5 to move. The connecting frame 3 is used to connect other vehicle body units 1 to form a modular pig transport vehicle. Different vehicle body units 1 move synchronously to stably carry the same pig. The traveling frame 2 is provided with traveling wheels at its bottom, which can be universal wheels or partially non-universal wheels. Vehicle body risers 8 are provided on the traveling frame 2. The vehicle body risers 8 are symmetrically distributed in multiple groups, for example, two or three groups, and are supported by the adjusting frame 4 at multiple locations on the arc plate assembly 5. The vehicle body vertical tube 8 is provided with a first adjustment hole 81, and the adjustment bracket 4 includes an adjustment column 14, and the adjustment column 14 is provided with a second adjustment hole 141. To facilitate adjustment, multiple first adjustment holes 81 can be provided in the height direction, or multiple second adjustment holes 141 can be provided in the height direction, or multiple first adjustment holes 81 and second adjustment holes 141 can be provided at the same time. The support bolt rod is provided through the first adjustment hole 81 and the second adjustment hole 141 corresponding in height. When only one of the first adjustment hole 81 and the second adjustment hole 141 is provided, only one corresponding hole is provided at each connection. When multiple holes are provided at the same time, two or more corresponding holes can be provided at each connection. The connecting bracket 3 is installed on the vehicle body vertical tube 8 at the end. Different vehicle body units 1 are connected through the connecting bracket 3. The arc plate assemblies 5 of different vehicle body units 1 are connected at the same height. The present invention achieves detachable connection between different body units 1 by installing a connecting bracket 3 on the body riser 8, and adjusts the height of the arc plate assembly 5 by correspondingly adjusting the first adjustment hole 81 on the body riser 8 and the second adjustment hole 141 on the adjustment column 14. This can not only expand the length of the arc plate assembly 5, but also conveniently ensure that the expanded arc plate assembly 5 is at the same height, which is well suitable for the transportation of pipe cleaners of different lengths.

[0036] like Figure 3 and Figure 5As shown, the first adjustment holes 81 are arranged at equal intervals on the vehicle body standpipe 8, and the second adjustment holes 141 are arranged at equal intervals on the adjustment column 14. After adjusting the height of the adjustment bracket 4 so that the first adjustment holes 81 and the second adjustment holes 141 are connected correspondingly, multiple groups can correspond at the same time. The support bolt rod adopts a bolt, which passes through the first adjustment hole 81 and the second adjustment hole 141 and is locked by a nut. By locking multiple groups of the first adjustment holes 81 and the second adjustment holes 141, locking at multiple positions is achieved to ensure a stable connection between the adjustment column 14 and the vehicle body standpipe 8.

[0037] like Figure 3 and Figure 4 As shown, the vehicle body vertical tube 8 is provided with a first mounting hole 82, which is located below the first adjustment hole 81. The connecting bracket 3 includes a connecting vertical plate 13 and a connecting horizontal plate 12 disposed opposite the connecting vertical plate 13. The entire connecting bracket 3 has a U-shaped structure, wherein the connecting vertical plate 13 serves as the bottom edge of the U-shaped structure, and the connecting horizontal plate 12 serves as the supporting arm of the U-shaped structure. The connecting horizontal plate 12 is provided with a second mounting hole 121 corresponding to the first mounting hole 82. When installing the connecting bracket 3, the two supporting arms of the U-shaped structure, namely the connecting horizontal plate 12, are fastened to the vehicle body vertical tube 8 so that the first mounting hole 82 corresponds to the second mounting hole 121. Bolts are then passed through the first mounting hole 82 and the second mounting hole 121 and tightened with nuts. The connecting vertical plate 13 is provided with a third mounting hole 131, and the connecting vertical plates 13 corresponding to different vehicle body unit 1 heights are fastened together using bolts. The connecting plate 13 may be provided with a plurality of third mounting holes 131. Different vehicle body units 1 are connected by connecting the connecting plate 13. The connecting plate 13 is fastened by passing bolts through the third mounting holes 131 on the connecting plate 13 and connecting nuts. Figure 2 As shown, the connecting brackets 3 can be distributed in a matrix pattern. For example, two connecting brackets 3 are provided on each vehicle body riser 8. When adjacent vehicle body units 1 are connected, four connecting brackets 3 are used for connection, thereby forming a multi-point fixation of the vehicle body units 1 and ensuring the connection strength and stability.

[0038] Furthermore, the aperture diameters and spacing of the first mounting holes 82 and the first adjustment holes 81 are kept consistent. When installing or adjusting the height of the adjustment bracket 4, since the connecting bracket 3 is relatively lightweight and is convenient for installation relative to the adjustment bracket 4, the connecting bracket 3 can be first installed at the first adjustment hole 81 at the position below the connecting bracket 3. Thus, the connecting bracket 3 can be used as a limiting structure to support the bottom end of the adjustment bracket 4. That is, the adjustment bracket 4 can be first placed on the connecting bracket 3, avoiding always relying on manpower to lift the adjustment bracket 4 during the adjustment process, saving the labor consumption of the operator, and being able to perform priority limiting to ensure the accuracy during the installation or adjustment of the adjustment bracket 4 and avoid errors. After the adjustment bracket 4 is installed or adjusted in place, the connecting bracket 3 is then disassembled and installed at the first mounting hole 82 below. If it is necessary to connect other vehicle body units 1, the corresponding installation is carried out again.

[0039] As Figure 3 shown, the walking bracket 2 includes vehicle body long tubes 11 arranged in parallel and a number of vehicle body short tubes 10 connecting the vehicle body long tubes 11. The vehicle body long tubes 11 and the vehicle body short tubes 10 are arranged horizontally and vertically and are connected by welding or bolt connection. For example, there are two rows of vehicle body long tubes 11 and three rows of vehicle body short tubes 10, arranged in a shape like the Chinese character 'ri'. Below the connection of the vehicle body long tubes 11 and the vehicle body short tubes 10, there is a wheel connection plate 7. The wheel connection plate 7 is simultaneously connected to the vehicle body long tubes 11 and the vehicle body short tubes 10, and a universal wheel 6 is connected to the wheel connection plate 7. Through the above settings, on the basis of connecting the universal wheel 6 by the wheel connection plate 7, the wheel connection plate 7 can also be used to strengthen the connection strength between the vehicle body long tubes 11 and the vehicle body short tubes 10, improving the overall rigidity of the walking bracket 2 and ensuring its bearing capacity.

[0040] Referring again to Figure 3 , the vehicle body vertical tube 8 can be welded to the upper part of the connection of the vehicle body long tubes 11 and the vehicle body short tubes 10, further improving the connection strength between the vehicle body long tubes 11 and the vehicle body short tubes 10, further enhancing the overall rigidity of the walking bracket 2, and ensuring its bearing capacity. Between adjacent vehicle body vertical tubes 8, there is a vehicle body strengthening tube 9. The vehicle body strengthening tube 9 is parallel to the vehicle body long tubes 11, and the number of vehicle body strengthening tubes 9 is set correspondingly according to the height of the vehicle body vertical tubes 8. For example, it can be set to two or more. The installation height of the connecting bracket 3 is within the installation height range of the vehicle body strengthening tube 9. By connecting the vehicle body strengthening tube 9 and the vehicle body vertical tube 8 into a stable overall structure, and using this overall structure to connect the overall structure of another vehicle body unit 1 through the connecting bracket 3, the stability of the connection of different vehicle body units 1 can be ensured, avoiding the situation of disconnection at the connecting bracket 3 when different vehicle body units 1 move together.

[0041] Combined with Figure 5As shown, the adjustable bracket 4 includes a connecting plate 16, a crossbeam 15 disposed on the connecting plate 16, and an adjustable column 14 disposed opposite the crossbeam 15. The upper portion of the connecting plate 16 is used to connect to the arc plate assembly 5, and the lower portion of the connecting plate 16 is connected to the crossbeam 15 by welding or other means. The crossbeam 15 and the adjustable column 14 are welded together to form a single unit. The provision of the crossbeam 15 between the connecting plate 16 and the adjustable column 14 enhances the overall structural rigidity of the adjustable bracket 4, thereby maintaining stable support for the arc plate assembly 5 during height adjustment.

[0042] Combine Figure 1 and Figure 2 as well as Figure 3 and Figure 5 As shown, the lateral spacing of the adjusting columns 14 is smaller than the lateral spacing of the vehicle body risers 8. By connecting the adjusting columns 14 to the inner side of the vehicle body risers 8, the crossbeam 15, the adjusting columns 14, and the vehicle body risers 8 form a support frame. The support frame has strong structural stability and can stably support the arc plate assembly 5 and the pipe cleaner it carries. At the same time, since the adjusting columns 14 and the vehicle body risers 8 are connected in a fitting manner, compared with a plug-in connection manner, pipe column materials of the same specifications can be used, further improving the supporting capacity.

[0043] like Figure 6 As shown, the arc plate assembly 5 includes an arc support frame 17 and a support arc plate 18 mounted on the arc support frame 17. The arc support frame 17 includes a base plate 171, an arc support plate 172 connected to the base plate 171, and a reinforcement plate 173. The arc of the arc support plate 172 conforms to the arc surface of the support arc plate 18 to provide stable support for the support arc plate 18. The reinforcement plate 173 is perpendicular to the arc support plate 172 and can be arranged side by side in multiple numbers to achieve multi-point support. In addition, the top of the reinforcement plate 173 can be arranged to conform to the curvature of the arc support plate 172, so that the reinforcement plate 173 can not only strengthen the structure of the arc support plate 172 but also support the support arc plate 18. Multiple arc support frames 17 are provided along the length direction of the support arc plate 18. The base plate 171 of each arc support frame 17 corresponds to the position of the connecting plate 16 of the adjustment bracket 4. The base plate 171 is fastened to the connecting plate 16 by bolts. The arrangement of multiple arc-shaped support frames 17 provides multi-point support in the length direction of the arc plate 18, thereby ensuring its supporting capacity.

[0044] Long U-shaped handles 19 are connected to both sides of the supporting arc plate 18. When moving the body unit 1 or the combined transport vehicle, the body unit 1 and the combined transport vehicle can be easily moved by holding the long U-shaped handle 19 and using the multiple universal wheels 6 provided at the bottom of the walking bracket 2.

[0045] The various components of the present invention are mainly welded from square tubes, and the overall structure has the advantages of easy manufacturing, simple structure, overall durability of the transport vehicle, and convenient maintenance. The walking bracket 2, the connecting bracket 3, the adjusting bracket 4 and the arc plate assembly 5 are all connected in a detachable manner, and can be installed or disassembled on-site according to factors such as the application environment and the transportation environment, solving problems such as small space and transportation difficulties, and meeting various usage requirements. In addition, the body unit 1 and the body unit 1 can also form a detachable connection through the connecting bracket 3, and can be connected according to the length of the transported pipe cleaner, and can adapt to the transportation of pipe cleaners of different lengths. Therefore, the present invention can be used in combination according to the length and weight of the on-site pipe cleaner, and the appropriate number of body units 1 can be selected for combination, which can reduce the operator's labor intensity and reduce resource waste.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A combined pig transport vehicle, characterized by: The vehicle body comprises one or more vehicle body units, each of which comprises a running bracket, a connecting bracket, and an adjusting bracket, with an arc plate assembly mounted on the adjusting bracket; the running bracket comprises a vehicle body vertical tube, with a first adjusting hole provided on the vehicle body vertical tube; the adjusting bracket comprises an adjusting column, with a second adjusting hole provided on the adjusting column; a plurality of the first adjusting holes and / or the second adjusting holes are provided in the height direction, and a supporting bolt rod is provided through the first adjusting hole and the second adjusting hole corresponding to the height; the connecting bracket is mounted on the vehicle body vertical tube at an end, and different vehicle body units are connected via the connecting bracket, and the arc plate assemblies of different vehicle body units are connected at the same height. The vehicle body vertical tube is provided with a first mounting hole, the connecting bracket includes a connecting vertical plate and a connecting horizontal plate provided opposite to the connecting vertical plate, the connecting horizontal plate is provided with a second mounting hole corresponding to the first mounting hole, the connecting horizontal plate is buckled onto the vehicle body vertical tube, the first mounting hole and the second mounting hole are fastened by bolts, a third mounting hole is provided on the connecting vertical plate, and the connecting vertical plates corresponding to different vehicle body unit heights are fastened by bolts; The aperture and spacing of the first mounting hole and the first adjustment hole are consistent, and when installing or adjusting the height of the adjustment bracket, the connecting bracket is used as a limiting structure to support the bottom end of the adjustment bracket; The adjustment bracket includes a connecting plate, a crossbeam provided on the connecting plate, and the adjustment column provided opposite to the crossbeam, wherein the connecting plate is used to connect the arc plate assembly; The lateral spacing of the adjusting columns is smaller than the lateral spacing of the vehicle body vertical tubes. The adjusting columns are connected to the inner sides of the vehicle body vertical tubes. The crossbeam, the adjusting columns and the vehicle body vertical tubes form a supporting frame.

2. The combined pig transport vehicle according to claim 1, characterized in that: The first adjustment holes are arranged on the vehicle body vertical tube at equal intervals, the second adjustment holes are arranged on the adjustment column at equal intervals, and the support bolt rod is a bolt that passes through the first adjustment hole and the second adjustment hole and is locked by a nut.

3. The combined pig transport vehicle according to claim 1, characterized in that: The walking bracket includes a long body tube arranged in parallel and a plurality of short body tubes connected to the long body tubes. A wheel connecting plate is provided below the connection between the long body tube and the short body tubes. The wheel connecting plate is connected to the long body tube and the short body tubes at the same time. The wheel connecting plate is connected to a universal wheel.

4. The combined pig transport vehicle according to claim 3, characterized in that: The vehicle body vertical tube is connected above the connection point between the vehicle body long tube and the vehicle body short tube. A vehicle body reinforcement tube is connected between adjacent vehicle body vertical tubes. The vehicle body reinforcement tube is parallel to the vehicle body long tube. The installation height of the connecting bracket is within the installation height range of the vehicle body reinforcement tube.

5. The combined pig transport vehicle according to claim 1, characterized in that: The arc plate assembly includes an arc support frame and a supporting arc plate installed on the arc support frame. The arc support frame is provided with multiple arc support frames in the length direction of the supporting arc plate. The arc support frame includes a base plate and an arc support plate and a reinforcement plate connected to the base plate. The reinforcement plate is perpendicular to the arc support plate, and the base plate is fastened to the connecting plate by bolts.

6. The combined pig transport vehicle according to claim 5, characterized in that: Long U-shaped handles are connected to both sides of the supporting arc plate.

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