A load switch transport and testing tool

Abstract

The utility model belongs to the field of testing circuit interrupters, switches or circuit breakers, and particularly relates to a load switch transport and testing tool. In order to solve the technical problems in the prior art that the grounding knife of the load switch will interfere with the tray and the labor intensity of workers transporting the load switch is high, the utility model proposes a load switch transport and testing tool. The load switch transport and testing tool includes a frame, the frame includes two columns and a beam structure for fixing the two columns, and an escape space for a part of the load switch to pass through is formed between the two columns and the beam structure. The frame is also provided with a connection structure for detachably fixing the load switch so that the bottom of the load switch is suspended and can perform grounding and disconnecting operations; the bottom of the frame is also provided with a walking mechanism. The walking mechanism can facilitate the transportation of the load switch, and the detection can be completed when the load switch is fixed by the frame, thereby reducing the labor intensity of the workers.

Description

Technical Field

[0001] The utility model belongs to the field of testing circuit interrupters, switches or circuit breakers, and particularly relates to a load switch transport and testing tool. Background Art

[0002] A load switch is used in a combined vacuum circuit breaker. For example, a Chinese utility model patent with an authorization announcement number of CN218826823U and an authorization announcement date of 2023.04.07 discloses a vacuum load switch, the lower part of which has a grounding knife and a grounding contact. The load switch is provided with a mounting hole for the bolt to pass through, so as to facilitate the connection of the load switch to the cabinet of the combined vacuum circuit breaker.

[0003] During the assembly of the vacuum circuit breaker, the load switch needs to be transferred from the transport vehicle to the test equipment and tested to ensure that the load switch meets the quality requirements. When transporting the load switch, the load switch needs to be fixed on the pallet first, and then the worker lifts the pallet and transfers the load switch to the test equipment. When testing the load switch, the load switch is generally tested directly on the pallet, but when the length of the grounding knife of the load switch is long, since the grounding knife needs to be turned downward when the grounding is disconnected, the grounding knife of the load switch will interfere with the pallet and even the ground when the grounding is disconnected, resulting in the grounding knife being unable to detach from the grounding contact, and the test of the load switch cannot be completed. After the load switch test is completed, the qualified load switch needs to be transported to the packaging place by pallet for packaging. Since workers need to lift the pallet and the load switch each time the load switch is transported, the labor intensity is high. Utility Model Content

[0004] The purpose of the utility model is to provide a load switch transfer and testing tool to solve the problem that before packaging the load switch, workers need to lift a pallet with the load switch fixed thereon and transport the load switch by the pallet, which is labor-intensive. At the same time, when the load switch is tested, the load switch is located on the pallet. Since the grounding knife needs to be rotated downward when the grounding is disconnected, the grounding knife of the load switch will interfere with the pallet when the grounding is disconnected, thereby causing the grounding knife to be unable to detach from the grounding contact, and the technical problem of being unable to complete the test of the load switch.

[0005] To achieve the above purpose, the technical solution of the load switch transfer and testing tooling provided by the utility model is:

[0006] A load switch transport and testing tool comprises a frame, the frame comprises two columns and a beam structure for fixedly connecting the two columns, an escape space for a part of the load switch to pass through is formed between the two columns and the beam structure, the frame is also provided with a connection structure for detachably fixedly connecting with the load switch so that the bottom of the load switch is suspended and can perform grounding and opening operations; a walking mechanism is also provided at the bottom of the frame.

[0007] Furthermore, the connection structure is arranged on the column, and each column is provided with at least two connection structures arranged at intervals along the extension direction of the column.

[0008] Furthermore, each column is fixedly connected to a connecting plate, and each connecting plate is provided with a connecting hole for bolts to pass through so as to use the mounting hole of the load switch itself to fix the load switch to the frame. A connecting plate and the connecting hole on the connecting plate constitute a connecting structure.

[0009] Furthermore, the connecting hole is a long hole extending along the arrangement direction of the two columns.

[0010] Furthermore, the crossbeam structure is an adjustable crossbeam structure with adjustable length, so that the distance between the connecting structures on the two columns can be adjusted by adjusting the length of the adjustable crossbeam structure.

[0011] Furthermore, the crossbeam structure includes a first connecting beam and a second connecting beam; the first connecting beam and the second connecting beam are both provided with fixing holes, and the number of fixing holes on at least one of the first connecting beam and the second connecting beam is at least two arranged at intervals along the arrangement direction of the two columns; the crossbeam structure also includes fixing bolts that detachably fix the first connecting beam and the second connecting beam through the fixing holes.

[0012] Furthermore, the beam structure includes a first beam, a second beam and a beam connecting member, one end of the first beam is fixedly connected to a column, the other end of the first beam is provided with a first fixing hole, one end of the second beam is fixedly connected to another column, the other end of the second beam is provided with a second fixing hole, and beam fixing holes are provided on both ends of the beam connecting member; the number of the first fixing hole and at least one of the beam connecting holes of the beam connecting member close to the first beam is at least two arranged at intervals along the arrangement direction of the two columns, and / or the number of the second fixing hole and at least one of the beam connecting holes of the beam connecting member close to the second beam is at least two arranged at intervals along the arrangement direction of the two columns; the beam structure also includes fixing bolts that detachably and fixedly connect the beam connecting member to the first beam and the second beam respectively through the first fixing hole, the second fixing hole and the beam connecting hole.

[0013] Furthermore, there are two cross beam structures, and the cross beam structures are divided into a top beam structure and a bottom beam structure arranged up and down. The two ends of the bottom beam structure are respectively fixedly connected to the bottoms of the two columns, and the two ends of the top beam structure are respectively fixedly connected to the tops of the two columns. A closed avoidance space is formed between the top beam structure, the bottom beam structure and the two columns.

[0014] Furthermore, the thickness of the cross beam structure is smaller than the width of the cross beam structure, the thickness of the bottom beam structure constitutes the height of the bottom beam structure, and the width of the top beam structure constitutes the height of the top beam structure, so as to avoid interference between the cross beam structure and the load switch.

[0015] Furthermore, the traveling mechanism is a universal wheel arranged at the bottom of the frame.

[0016] The beneficial effects of the load switch transfer and testing tooling of the utility model are as follows: the utility model is a pioneering invention. The load switch can be fixed on the rack through the connection structure, and the bottom of the load switch is suspended in the air, so as to ensure that the grounding and opening operation can be performed to complete the test of the load switch; the interference between the load switch and the column and beam structure can be avoided through the avoidance space, so as to ensure that the load switch can be fixed on the rack; the load switch fixed on the load switch transfer and testing tooling can be conveniently transferred to the test equipment through the walking mechanism, and the load switch can be directly grounded and opened during the test without removing the load switch from the rack. At the same time, after the test is completed, the qualified load switch can be directly transported to the packaging place by using the load switch transfer and testing tooling, and then the load switch can be removed from the rack for packaging, thereby reducing the labor intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a specific embodiment 1 of the load switch transport and testing tool of the utility model;

[0018] Figure 2 for Figure 1 A front view of the top beam structure in FIG.

[0019] Figure 3 It is a top view of the bottom beam structure of specific embodiment 2 of the load switch transport and testing tooling of the utility model.

[0020] Description of reference numerals:

[0021] 1. Bottom beam structure; 11. Second connecting beam; 12. First connecting beam; 2. Column; 3. Lower connecting plate; 4. Upper connecting plate; 5. Top beam structure; 51. First cross beam; 52. Cross beam connector; 53. Second cross beam; 6. Universal wheel; 7. Connecting hole; 8. Fixing hole; 81. First fixing hole; 82. Cross beam fixing hole; 83. Second fixing hole. DETAILED DESCRIPTION

[0022] In order to solve the problems raised in the background technology, the main inventive concept of the utility model is: by fixing the load switch on the frame and making the bottom of the load switch suspended in the air, the grounding and disconnecting operation can be performed when the load switch is fixed on the frame. At the same time, the walking mechanism at the bottom of the frame can be used to conveniently transfer the load switch fixed on the frame to the test equipment. After the test is completed, the qualified load switch fixed on the frame can also be conveniently transferred to the packaging place, thereby reducing the labor intensity of the workers.

[0023] In the present utility model, the load switch refers not only to a simple load switch, but also to a three-in-one load switch obtained by combining a simple load switch, a grounding switch and an isolating switch.

[0024] The present invention is further described in detail below in conjunction with the embodiments.

[0025] Specific embodiment 1 of the load switch transport and testing tool provided by the utility model:

[0026] like Figure 1-2 As shown, as a specific implementation, the load switch transport and testing tooling includes a frame, the frame includes two columns 2 and a beam structure for fixing the two columns 2, an escape space for a part of the load switch to pass through is formed between the two columns 2 and the beam structure, and the frame is also provided with a connection structure for detachably fixing the load switch so that the bottom of the load switch is suspended and can perform a grounding and opening operation; a walking mechanism is also provided at the bottom of the frame.

[0027] Specifically, Figure 1 As shown, in order to make the rack more stable, the rack is a frame structure, the number of crossbeam structures is two, and the crossbeam structure is divided into a top beam structure 5 and a bottom beam structure 1 arranged up and down, the two ends of the bottom beam structure 1 are respectively fixedly connected to the bottom of the two columns 2, the two ends of the top beam structure 5 are respectively fixedly connected to the top of the two columns 2, and a closed escape space is formed between the top beam structure 5, the bottom beam structure 1 and the two columns 2. However, in other specific embodiments, the number of crossbeam structures can also be one, and the crossbeam structure is only the bottom beam structure 1. In this case, a semi-open escape space is formed between the bottom beam structure 1 and the two columns 2; of course, the crossbeam structure can also be only the top beam structure 5, and a semi-open escape space is formed between the top beam structure 5 and the two columns 2. Specifically, a closed escape space is formed between the top beam structure 5, the ground and the two columns 2. Compared with the technical solution of only setting one crossbeam structure, setting the top beam structure 5 and the bottom beam structure 1 at the same time can make the rack more stable.

[0028] Specifically, Figure 1As shown, the walking mechanism is a universal wheel 6 arranged at the bottom of the frame, so that the frame can be easily moved, and the structure is simple; of course, in other specific embodiments, the walking mechanism can also be a ball bearing, crawler walking mechanism or other structure arranged at the bottom of the frame. In this embodiment, the specific structure of the walking mechanism is not limited, as long as the walking mechanism can move the frame on the ground.

[0029] The load switch can be fixed on the rack through the connecting structure, and the bottom of the load switch is suspended in the air, ensuring that the grounding and disconnecting operation can be performed to complete the test of the load switch; the avoidance space can avoid interference between the load switch and the column 2 and the beam structure, ensuring that the load switch can be fixed on the rack; the load switch fixed on the load switch transfer and testing tooling can be conveniently transferred to the test equipment through the walking mechanism, and the load switch can be directly grounded and disconnected during the test without removing the load switch from the rack. At the same time, after the test is completed, the qualified load switch can be directly transported to the packaging site using the load switch transfer and testing tooling, and then the load switch can be removed from the rack for packaging, thereby reducing the labor intensity of the workers.

[0030] like Figure 1 As shown, in order to better fix the load switch, as a specific implementation, the connection structure is arranged on the column 2, and each column 2 is provided with at least two connection structures arranged at intervals along the extension direction of the column 2, specifically two, but in other specific implementations, it can also be three, four or more. By increasing the number of connection structures, it is possible to increase the number of locations where the rack and the load switch are fixedly connected, thereby better fixing the load switch on the rack. However, in other specific implementations, refer to Figure 1 As shown, the connection structure may also be arranged on the top beam structure 5, and only one connection structure is arranged.

[0031] like Figure 1 As shown, in order to conveniently fix the load switch on the rack, as a specific implementation, each column 2 is fixedly connected with a connecting plate, and each connecting plate is provided with a connecting hole 7 for a bolt to pass through so as to use the mounting hole of the load switch to fix the load switch to the rack. A connecting plate and the connecting hole 7 on the connecting plate constitute a connecting structure, which has a simple structure. When fixing the load switch, a bolt is used to pass through the connecting hole 7 and the mounting hole on the load switch at the same time, and then the nut is screwed on the bolt, so that the load switch can be conveniently fixed on the rack. However, in other specific implementations, the connecting hole 7 can also be set on the column 2. In this case, an extended bolt that can pass through the column 2 is required; or a fixing screw rod for passing through the mounting hole of the load switch is set on the connecting plate. In this case, the mounting hole of the load switch needs to be aligned with all the fixing screw rods at the same time before the load switch can be installed on the rack.

[0032] like Figure 1 As shown, in order to more conveniently fix the load switch on the rack, as a specific implementation, the connection hole 7 is a long hole extending along the arrangement direction of the two columns 2, so that the connection hole 7 can be easily aligned with the mounting hole on the load switch, and the load switch can be conveniently fixed to the rack with bolts and nuts, which is convenient for installation. However, in other specific implementations, the mounting hole can also be a round hole that matches the screw of the bolt. In this case, the worker needs to carefully align the mounting hole with the connection hole 7.

[0033] like Figure 1-2 As shown, since the widths of load switches at different distances are different, in order to enable the load switch transport and test tooling to adapt to load switches at different distances, as a specific implementation, the crossbeam structure is an adjustable crossbeam structure with adjustable length, so that the distance between the connecting structures on the two columns 2 can be adjusted by adjusting the length of the adjustable crossbeam structure, thereby adapting to load switches at different distances. However, in other specific implementations, the crossbeam structure can also be a connecting beam with a fixed length. In this case, the load switch transport and test tooling can only adapt to load switches at one distance.

[0034] At the same time, if Figure 1 As shown, since the positions of the mounting holes on load switches of different specifications are different, in order to make the load switch transport and test tooling adaptable to load switches of different specifications, as a specific implementation, the connecting plate is divided into an upper connecting plate 4 and a lower connecting plate 3, and the upper connecting plate 4 has two connecting holes 7 distributed in the up-down direction, and the lower connecting plate 3 has only one connecting hole 7. For a load switch of one specification, the load switch can be fixed on the rack by using the connecting hole 7 on the lower connecting plate 3 and any one of the connecting holes 7 on the upper connecting plate 4; for a load switch of another specification, the load switch can only be fixed on the rack by using the connecting hole 7 on the lower connecting plate 3 and the uppermost connecting hole 7 on the upper connecting plate 4.

[0035] like Figure 1-2As shown, in order to conveniently adjust the length of the beam structure, as a specific implementation, the beam structure includes a first beam 51, a second beam 53 and a beam connector 52, one end of the first beam 51 is fixedly connected to a column 2, the other end of the first beam 51 is provided with a first fixing hole 81, one end of the second beam 53 is fixedly connected to another column 2, the other end of the second beam 53 is provided with a second fixing hole 83, and both ends of the beam connector 52 are provided with beam fixing holes 82; the first fixing hole 81 and the beam connector 52 are close to the first fixing hole 81 and the second fixing hole 83. The number of at least one of the beam connecting holes 82 of a beam 51 is at least two arranged at intervals along the arrangement direction of the two columns 2, and / or the number of the second fixing holes 83 and at least one of the beam connecting holes 82 of the beam connecting member 52 close to the second beam 53 is at least two arranged at intervals along the arrangement direction of the two columns 2; the beam structure also includes fixing bolts that detachably fix the beam connecting member 52 to the first beam 51 and the second beam 53 respectively through the first fixing hole 81, the second fixing hole 83 and the beam connecting hole 82.

[0036] Specifically, thirteen groups and twenty-six beam connecting holes 82 are provided on the beam connecting member 52, and the number of the first fixing holes 81 and the second fixing holes 83 are both two. However, in other specific embodiments, the beam fixing holes 82 on both ends of the beam connecting member 52 can also be three, four or more numbers respectively arranged at intervals along the arrangement direction of the two columns 2; or, a beam fixing hole 82 is provided on each end of the beam connecting member 52, a first fixing hole 81 is provided on the first beam 51, and two second fixing holes 83 are provided on the second beam 53, which are arranged at intervals along the arrangement direction of the two columns 2; of course, two first fixing holes 81 arranged at intervals along the arrangement direction of the two columns 2 can also be provided on the first beam 51. In this embodiment, there is no restriction on the arrangement of the first fixing hole 81, the second fixing hole 83 and the beam fixing hole 82, as long as the number of the first fixing hole 81 and at least one of the beam connecting holes 82 of the beam connecting member 52 close to the first beam 51 is at least two arranged at intervals along the arrangement direction of the two columns 2, or the number of the second fixing hole 83 and at least one of the beam connecting holes 82 of the beam connecting member 52 close to the second beam 53 is at least two arranged at intervals along the arrangement direction of the two columns 2.

[0037] Specifically, the first fixing hole 81, the crossbeam fixing hole 82, and the second fixing hole 83 are all through holes. The first crossbeam 51, the second crossbeam 53, and the crossbeam connecting member 52 can be conveniently and fixedly connected by fixing bolts and nuts. By aligning different crossbeam fixing holes 82 on the crossbeam connecting member 52 with the first fixing hole 81 or the second fixing hole 83 on the first crossbeam 51 or the second crossbeam 53, the length of the crossbeam structure can be conveniently adjusted. At the same time, the crossbeam fixing hole 82 on the crossbeam connecting member 52 is an oblong hole to facilitate aligning the crossbeam fixing hole 82 on the crossbeam connecting member 52 with the first fixing hole 81 or the second fixing hole 83 on the first crossbeam 51 or the second crossbeam 53. The crossbeam connecting member 52 has a "U" - shaped structure, specifically including a horizontal plate and two vertical plates connected to both ends of the horizontal plate. The horizontal plate and the two vertical plates are respectively in contact with three sides of the first crossbeam 51 and the second crossbeam 53. The inner walls of the two vertical plates are used to guide the first crossbeam 51 and the second crossbeam 53, thus facilitating the fixed connection of the first crossbeam 51, the second crossbeam 53, and the crossbeam connecting member 52.

[0038] However, in other specific embodiments, the first fixing hole 81, the crossbeam fixing hole 82, and the second fixing hole 83 can also be threaded holes. Of course, in other specific embodiments, the crossbeam structure can also be an electric telescopic rod, and both ends of the electric telescopic rod are respectively fixedly connected to the two columns 2. Of course, the crossbeam connecting member 52 can also be a crossbeam connecting plate, and the crossbeam connecting plate is only in contact with one side of the first crossbeam 51 and the second crossbeam 53.

[0039] As Figure 1-2 shown, after the load switch is fixed on the frame, since a part of the load switch passes through the avoidance space, in order to avoid interference between the crossbeam structure 5 and the load switch, as a specific embodiment, the thickness of the crossbeam structure is less than the width of the crossbeam structure. The thickness of the bottom beam structure 1 constitutes the height of the bottom beam structure 1, and the width of the top beam structure 5 constitutes the height of the top beam structure 5, so as to avoid interference between the crossbeam structure and the load switch, and the structure is simple. Specifically, along Figure 1 the direction perpendicular to the paper plane in Figure 1 is the thickness direction of the top beam structure 5, and along Figure 1 the direction perpendicular to the paper plane in

[0040] is the width direction of the bottom beam structure 1. The top beam structure 5 and the column 2 are fixedly connected by an upper connecting plate 4. By thinning the thickness of the top beam structure 5 in the direction perpendicular to the paper plane in

[0041] Figure 1 it is possible to effectively avoid interference between the top beam structure 5 and the load switch that passes through the avoidance space. However, in other specific embodiments, the column 2 can also be heightened so that the top beam structure 5 is completely above the load switch, thus avoiding interference between the top beam structure 5 and the load switch.

[0040] Specific embodiment 2 of the load switch transfer and test tooling provided by the present utility model:

[0041] The purpose of this embodiment is to provide a load switch transport and testing tool with an adjustable crossbeam structure that is different from the specific embodiment 1 of the utility model. The difference between this embodiment and the specific embodiment 1 of the utility model is that: Figure 1 On the basis of Figure 3 As shown, in this embodiment, in order to conveniently adjust the length of the beam mechanism, as a specific implementation method, the beam structure includes a first connecting beam 12 and a second connecting beam 11 that is sleeved outside the first connecting beam 12; the first connecting beam 12 and the second connecting beam 11 are both provided with fixing holes 8, and the number of fixing holes on at least one of the first connecting beam 12 and the second connecting beam 11 is at least two arranged at intervals along the arrangement direction of the two columns 2; the beam structure also includes fixing bolts that detachably fix the first connecting beam 12 and the second connecting beam 11 through the fixing holes 8. Specifically, there are three groups of six fixing holes 8 on the second connecting beam 11, and four groups of eight fixing holes 8 on the first connecting beam 12. The fixing holes 8 are through holes, and the length of the beam structure can be conveniently adjusted by fixing bolts and nuts; however, in other specific embodiments, there can be only one group of fixing holes 8 on the second connecting beam 11 and the first connecting beam 12, and the number of fixing holes 8 on the second connecting beam 11 can also be two, three, four or more, and the number of fixing holes 8 on the first connecting beam 12 can also be two, three, four or more; of course, when the fixing holes 8 are threaded holes, the length of the beam structure can be directly adjusted by fixing bolts. After the second connecting beam 11 is put on the first connecting beam 12, by aligning the fixing holes 8 on the second connecting beam 11 with the fixing holes 8 on the first connecting beam 12, the length of the beam mechanism can be conveniently adjusted by fixing bolts.

[0042] Of course, in other specific embodiments, only one fixing hole 8 may be provided on the second connecting beam 11, and at least two fixing holes 8, specifically two, or three or more, arranged at intervals along the arrangement direction of the two columns 2 may be provided on the first connecting beam 12, and the total length of the beam structure may be adjusted by aligning the fixing holes 8 on the second connecting beam 11 with different fixing holes 8 on the first connecting beam 12. Of course, at least two fixing holes 8, specifically two, or three or more, arranged at intervals along the arrangement direction of the two columns 2 may be provided on the second connecting beam 11, and only one fixing hole 8 may be provided on the first connecting beam 12, and the fixing holes 8 on the first connecting beam 12 may be aligned with different fixing holes 8 on the second connecting beam 11, thereby adjusting the total length of the beam structure.

[0043] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A load switch transport and testing tool, characterized in that: The invention comprises a frame, which comprises two columns and a beam structure for fixing the two columns, an escape space for a part of the load switch to pass through is formed between the two columns and the beam structure, and the frame is also provided with a connection structure for detachably fixing the load switch so that the bottom of the load switch is suspended and can perform grounding and opening operations; a walking mechanism is also provided at the bottom of the frame.

2. The load switch transport and testing tool as claimed in claim 1, characterized in that: The connection structure is arranged on the column, and each column is provided with at least two connection structures arranged at intervals along the extension direction of the column.

3. The load switch transport and testing tool as claimed in claim 2, characterized in that: Each column is fixedly connected with a connecting plate, and each connecting plate is provided with a connecting hole for bolts to pass through so as to use the mounting hole of the load switch itself to fix the load switch to the frame. A connecting plate and the connecting hole on the connecting plate constitute a connecting structure.

4. The load switch transport and testing tool as claimed in claim 3, characterized in that: The connecting hole is a long hole extending along the arrangement direction of the two columns.

5. The load switch transport and testing tool as described in any one of claims 2 to 4, characterized in that: The crossbeam structure is an adjustable crossbeam structure with adjustable length, so that the distance between the connecting structures on the two columns can be adjusted by adjusting the length of the adjustable crossbeam structure.

6. The load switch transport and testing tool as claimed in claim 5, characterized in that: The crossbeam structure includes a first connecting beam and a second connecting beam; the first connecting beam and the second connecting beam are both provided with fixing holes, and the number of fixing holes on at least one of the first connecting beam and the second connecting beam is at least two arranged at intervals along the arrangement direction of the two columns; the crossbeam structure also includes fixing bolts that detachably fix the first connecting beam and the second connecting beam through the fixing holes.

7. The load switch transport and testing tool as claimed in claim 5, characterized in that: The crossbeam structure includes a first crossbeam, a second crossbeam and a crossbeam connecting member, one end of the first crossbeam is fixedly connected to a column, the other end of the first crossbeam is provided with a first fixing hole, one end of the second crossbeam is fixedly connected to another column, the other end of the second crossbeam is provided with a second fixing hole, and crossbeam fixing holes are provided on both ends of the crossbeam connecting member; the number of the first fixing hole and at least one of the crossbeam connecting holes of the crossbeam connecting member close to the first crossbeam is at least two arranged at intervals along the arrangement direction of the two columns, and / or the number of the second fixing hole and at least one of the crossbeam connecting holes of the crossbeam connecting member close to the second crossbeam is at least two arranged at intervals along the arrangement direction of the two columns; the crossbeam structure also includes fixing bolts that detachably and fixedly connect the crossbeam connecting member to the first crossbeam and the second crossbeam respectively through the first fixing hole, the second fixing hole and the crossbeam connecting hole.

8. The load switch transport and testing tool as described in any one of claims 1 to 4, characterized in that: There are two crossbeam structures, and the crossbeam structures are divided into a top beam structure and a bottom beam structure arranged up and down. The two ends of the bottom beam structure are respectively fixedly connected to the bottoms of the two columns, and the two ends of the top beam structure are respectively fixedly connected to the tops of the two columns. A closed avoidance space is formed between the top beam structure, the bottom beam structure and the two columns.

9. The load switch transport and testing tool as claimed in claim 8, characterized in that: The thickness of the cross beam structure is smaller than the width of the cross beam structure, the thickness of the bottom beam structure constitutes the height of the bottom beam structure, and the width of the top beam structure constitutes the height of the top beam structure, so as to avoid interference between the cross beam structure and the load switch.

10. The load switch transport and testing tool as described in any one of claims 1 to 4, characterized in that: The walking mechanism is a universal wheel arranged at the bottom of the frame.

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