A compact folding track inspection trolley

Abstract

The present application relates to a kind of compact rail inspection trolley, by double-wheel part A, foldable part B and single-wheel part C, double-wheel part A, foldable part B and single-wheel part C are sequentially connected, and constitute T-shaped structure rail inspection trolley main body;Tray part of double-wheel part A is installed on push rod installation adjusting limiting plate by push rod part, recessed connecting shaft sleeve is provided on the BC connecting plate of foldable part B, recessed connecting shaft sleeve and convex connecting shaft sleeve are connected by connecting shaft, foldable part B rotates around connecting shaft to realize folding and unfolding assembly function, prism prism column part is installed at prism column installation groove, when foldable part B is rotated to folding position, prism prism column part can be placed in the inner cavity of foldable part B, double-wheel part A is stacked on the upper part of folding part;The present application is quickly and conveniently disassembled, and after folding storage, external size greatly reduces, so that the external size of transport box is small, small in size, light in weight, and convenient to use, move and transport.

Description

[TECHNICAL FIELD]

[0001] The present application relates to the technical field of track monitoring, in particular to a folding compact track inspection trolley. [BACKGROUND]

[0002] The track inspection trolley is used for track inspection of high-speed rail, railway and subway, and the distance between left and right rails is about 1600 mm, so the track inspection trolley is generally large, and contains a plurality of accessories such as a push rod, a prism column, a prism, a computer, a battery, wireless communication equipment and a cable. The track inspection trolley and all accessories are installed in a large box, which is large in size and heavy in weight, resulting in inconvenience in on-site use, moving and transportation, and at least two people are needed to lift to carry.

[0003] In addition, the track inspection trolley is generally assembled, assembled during use and disassembled after use, which is time-consuming and laborious, and assembly errors may occur. [SUMMARY]

[0004] The present application aims to solve the above problems and provides a folding compact track inspection trolley, which realizes quick and convenient disassembly and assembly of the track inspection trolley, greatly reduces the external size after folding and storage, makes the external size of the transport box small, the volume small and the weight light, facilitates use, moving and transportation, and solves the problems of time-consuming and laborious assembly and disassembly of the track inspection trolley in practical work and the problems of large and heavy transport box of the track inspection trolley on the market.

[0005] To achieve the above purpose, a folding compact track inspection trolley is designed, which is composed of a double-wheel part A, a foldable part B and a single-wheel part C. The double-wheel part A, the foldable part B and the single-wheel part C are connected in sequence and constitute a T-shaped structure track inspection trolley main body. The double-wheel part A includes a tray part and a push rod part. The tray part is installed on the push rod installation adjustment limiting plate A4 of the double-wheel part A through the push rod part. The foldable part B includes a BC connecting plate B1 and a prism prism column part. The BC connecting plate B1 is provided with a concave connecting shaft sleeve B2. The concave connecting shaft sleeve B2 is connected with a convex connecting shaft sleeve C2 of the single-wheel part C through a connecting shaft C4. The foldable part B rotates around the connecting shaft C4 to realize folding and unfolding assembly functions. The prism prism column part is installed at a prism column installation groove of the single-wheel part C. When the foldable part B is rotated to a folding position, the prism prism column part can be placed in the inner cavity of the foldable part B. The double-wheel part A is stacked on the upper part of the folding part.

[0006] Further, the push rod mounting adjustment limiting plate A4 is fixed on the A part cross beam A19, the A part cross beam A19 is arranged transversely, the other end of the A part cross beam A19 is fixed on the A part longitudinal beam A18, the A part longitudinal beam A18 is arranged longitudinally, the A part support beam A20 is mounted between the A part longitudinal beam A18 and the A part cross beam A19, the A part handle A17 is arranged on the middle of the A part longitudinal beam A18, the close-to-wheel mounting frame A3 is mounted on both ends of the A part longitudinal beam A18, the close-to-wheel A2 is mounted on the close-to-wheel mounting frame A3, and the walking wheel A1 is fixed on one side of the close-to-wheel A2.

[0007] Further, the tray part comprises a tray moving knob A9, a tray moving limiting block A10, a tray plate A11, a tray fixing limiting block A12, a telescopic rod telescopic rotation locking device A13, a push handle A14, a tray angle adjusting locking knob A15, and a telescopic rod A16, the push handle A14 is mounted on the telescopic rod A16, the telescopic rod A16 is telescopically mounted in the push rod A8 through the telescopic rod telescopic rotation locking device A13, the other end of the push rod A8 is provided with the push rod U-shaped fork A5, the push rod U-shaped fork A5 is connected with the push rod mounting adjustment limiting plate A4, the tray plate A11 is made of carbon fiber material, the tray plate A11 is connected with the push handle A14 through the tray support rod, the tray fixing limiting block A12 is detachably connected to the lower end of the tray plate A11, the tray moving limiting block A10 is detachably connected to the upper end of the tray plate A11, and the tray moving limiting block A10 and the tray fixing limiting block A12 are arranged symmetrically; the tray moving limiting block A10 is provided with a buckling clamping tongue for a terminal, the tray moving limiting block A10 is moved and then locked by buckling the terminal by rotating the tray moving knob A9; the tray fixing limiting block A12 is connected with the push handle A14 through the tray angle adjusting locking knob A15, and the tray fixing limiting block A12 is provided with a buckling clamping tongue and a limiting column for the terminal.

[0008] Further, the push handle A14 is annular, the push handle A14 is held horizontally or vertically, and the push handle A14 is lower than the height of the tray plate A11, so that the display screen of the notebook computer, tablet computer or industrial computer placed on the tray plate A11 is closer to the eyes of the operator.

[0009] Further, the push rod part comprises the push rod U-shaped fork A5, the push rod adjusting limiting lock A7 and the push rod A8, the top end of the push rod A8 is fixedly connected with the push rod U-shaped fork A5, the push rod U-shaped fork A5 is inserted into the push rod mounting adjustment limiting plate A4 and is locked and fixed through the push rod adjusting limiting lock A7, and the push rod A8 is made of carbon fiber material.

[0010] Further, the prism prism column part comprises a precision prism B4, a prism connecting rod B6, a prism mounting rack B7, a prism column B9 and a prism column mounting plate B10, the prism column B9 is mounted on the prism column mounting plate B10, the prism column B9 is made of carbon fiber material, the other end of the prism column B9 is provided with the prism mounting rack B7 through the prism connecting rod B6, the precision prism B4 is mounted on the prism mounting rack B7, and the prism prism column part is mounted at the prism column mounting groove of the single wheel part C through the prism column mounting plate B10.

[0011] Further, the prism prism column part is embedded in the prism column mounting plate limiting groove B11 on the AB connecting plate B13 through the prism column mounting plate B10, and is fixed in the inner cavity of the foldable part B through the prism fixing groove B8, and the prism fixing groove B8 is arranged on the fixed screw rod B12.

[0012] Further, the bottom of the push rod mounting adjusting limiting plate A4 is provided with a splicing lap joint groove A6, the AB connecting plate B13 is placed into the splicing lap joint groove A6 when the foldable part B is spliced, so that the double wheel part A and the foldable part B are lapped together.

[0013] Further, the foldable part B is provided with a B part fixed magnet B5, the single wheel part C is provided with a C part fixed magnet C5 matched with the B part fixed magnet B5, when the foldable part B rotates to the folded position around the connecting shaft C4, the B part fixed magnet B5 and the C part fixed magnet C5 are attracted together, so that the foldable part B is fixed to this position and becomes an integral whole.

[0014] Further, the single wheel part C is provided with a C part connecting plate C1 at the end, a C part handle C6 is mounted in the middle of the single wheel part C, a hemispherical limiting convex column C3 is arranged on the C part connecting plate C1, when the foldable part B is spliced and unfolded, the B part fixed magnet B5 and the C part fixed magnet C5 are separated, the foldable part B rotates to the unfolded position around the connecting shaft C4, and the hemispherical limiting convex column C3 of the C part connecting plate C1 is inserted into the circular limiting hole B3 of the BC connecting plate B1 to realize limiting and close-fitting.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] (1) The present application can realize the rapid splicing and disassembling and packing of the rail inspection trolley.

[0017] (2) The present application greatly reduces the external size and volume of the transport box by folding and stacking, and the overall weight is greatly reduced by reducing the box surface area and optimizing the selection of materials, so that one person can carry it, making it very convenient to use, move and transport. It can be shipped by plane and carried on high-speed rail. It can be placed in the trunk of a private car.

[0018] (3) The present application has only one splicing position, and a splicing lap joint groove and a limiting device are designed, so that the splicing precision and repeatability are higher.

[0019] (4) When folding and stacking the present application, the folding part B connecting shaft is rotated to the Figure 3 position, the B part fixed magnet is attracted to the C part fixed magnet, the folding part B is fixed to this position, so that it becomes a whole, and the folding part B no longer rotates.

[0020] (5) When unfolding and splicing the present application, the B part fixed magnet is separated from the C part fixed magnet, the folding part B connecting shaft is rotated to the Figure 6 position, and the hemispherical limiting convex column of the single-wheel part C connecting plate is inserted into the circular limiting hole of the BC connecting plate of the folding part B, so that the limiting and tight fitting is realized.

[0021] (6) The prism and prism column part of the present application can be placed in the inner cavity of the folding part B, so that the transport box does not need additional space to place the prism and prism column part.

[0022] (7) When splicing the present application, the AB connecting plate on the folding part B is placed into the splicing lap joint groove, so that the double-wheel part A and the folding part B are lapped together, and then the rail inspection trolley body can be loosened, which is convenient and easy to tighten the connecting screw.

[0023] (8) The push handle installed on the push rod telescopic rod of the present application is annular, which shortens the length of the push rod, is convenient to store, and has two ways of horizontal grip and vertical grip. The push handle is lower than the height of the supporting plate, so that the notebook computer, tablet computer or industrial computer display screen placed on the supporting plate is closer to the eyes of the operator, and it is easier and more convenient to read the screen information and operate the computer.

[0024] (9) The push rod, supporting plate and prism column of the present application are made of carbon fiber material, which is high in strength, durable, light in weight and reduces the overall weight.

[0025] (10) The present application solves the problems of time-consuming and laborious during the splicing and disassembly of the rail inspection trolley in actual work, and solves the many pain points of the large and heavy transport box of the rail inspection trolley on the market, which needs two people to operate, the size exceeds the standard of plane shipment and high-speed rail luggage, and the car needs a large space to transport, and it is very laborious to load and unload.

[0026] In summary, the rail inspection trolley is folded compactly, which is composed of a double-wheel part A, a foldable part B and a single-wheel part C. [SUMMARY]

[0027] Figure 1 is a folding structure schematic diagram of the present application;

[0028] Figure 2 is a packing structure schematic diagram of the present application;

[0029] Figure 3 is a folding front view of the foldable part B and the single-wheel part C of the present application;

[0030] Figure 4 is a rear top view of the foldable part B after the prism is stored of the present application;

[0031] Figure 5 is a top view of the double-wheel part A of the present application;

[0032] Figure 6 is a front view after the present application is unfolded and assembled;

[0033] Figure 7 is a top view after the present application is unfolded and assembled;

[0034] In the figure: A1, walking wheel; A2, close wheel; A3, close wheel mounting frame; A4, push rod mounting adjusting limiting plate; A5, push rod U-shaped fork; A6, assembly lap joint groove; A7, push rod adjusting limiting lock; A8, push rod; A9, tray moving knob; A10, tray moving limiting block; A11, supporting plate; A12, tray fixed limiting block; A13, telescopic rod telescopic rotation locking device; A14, push handle; A15, tray angle adjusting locking knob; A16, telescopic rod; A17, A part handle; A18, A part longitudinal beam; A19, A part cross beam; A20, A part supporting beam; B1, BC connecting plate; B2, concave connecting shaft sleeve; B3, circular limiting hole; B4, precision prism;

[0035] B5, B part fixed magnet; B6, prism connecting rod; B7, prism mounting frame; B8, prism fixed groove; B9, prism column; B10, prism column mounting plate; B11, prism column mounting plate limiting groove; B12, fixed screw rod; B13, AB connecting plate; C1, C part connecting plate; C2, convex connecting shaft sleeve; C3, semispherical limiting convex column; C4, connecting shaft; C5, C part fixed magnet; C6, C part handle. [DETAILED DESCRIPTION]

[0036] The application provides a compact folding track inspection trolley, which is composed of a double-wheel part A, a foldable part B and a single-wheel part C, the double-wheel part A, the foldable part B and the single-wheel part C are sequentially connected and constitute a T-shaped structure track inspection trolley main body; the double-wheel part A comprises a tray part and a push rod part, the tray part is installed on a push rod installation adjusting limiting plate A4 of the double-wheel part A through the push rod part, the foldable part B comprises a BC connecting plate B1 and a prism prism column part, a concave connecting shaft sleeve B2 is arranged on the BC connecting plate B1, the concave connecting shaft sleeve B2 is connected with a convex connecting shaft sleeve C2 of the single-wheel part C through a connecting shaft C4, the foldable part B rotates around the connecting shaft C4 to realize folding and unfolding assembly functions, the prism prism column part is installed at a prism column installation groove of the single-wheel part C, when the foldable part B rotates to a folding position, the prism prism column part can be placed in an inner cavity of the foldable part B, and the double-wheel part A is stacked on the upper part of the folding part.

[0037] In the double-wheel part A, the push rod installation adjusting limiting plate A4 is fixed on an A part cross beam A19, the A part cross beam A19 is arranged transversely, the other end of the A part cross beam A19 is fixed on an A part longitudinal beam A18, the A part longitudinal beam A18 is arranged longitudinally, an A part support beam A20 is installed between the A part longitudinal beam A18 and the A part cross beam A19, an A part handle A17 is arranged in the middle of the A part longitudinal beam A18, abutting wheel mounting frames A3 are installed at both ends of the A part longitudinal beam A18, abutting wheels A2 are installed on the abutting wheel mounting frames A3, and walking wheels A1 are fixedly installed on one side of the abutting wheels A2.

[0038] The tray part comprises a tray moving knob A9, a tray moving limiting block A10, a tray plate A11, a tray fixing limiting block A12, a telescopic rod telescopic rotating locking device A13, a push handle A14, a tray angle adjusting locking knob A15 and a telescopic rod A16. The push handle A14 is installed on the telescopic rod A16, the telescopic rod A16 is telescopically installed in the push rod A8 through the telescopic rod telescopic rotating locking device A13, the other end of the push rod A8 is provided with a push rod U-shaped fork A5, the push rod U-shaped fork A5 is connected with the push rod installation adjusting limiting plate A4, the tray plate A11 is made of carbon fiber material, the tray plate A11 is connected with the push handle A14 through a tray supporting rod, the tray fixing limiting block A12 is detachably connected to the lower end of the tray plate A11, the tray moving limiting block A10 is detachably connected to the upper end of the tray plate A11, and the tray moving limiting block A10 and the tray fixing limiting block A12 are symmetrically arranged. A terminal clamping clasp is arranged on the tray moving limiting block A10, the tray moving limiting block A10 is moved and then locked by rotating the tray moving knob A9 to clamp the terminal; the tray fixing limiting block A12 is connected with the push handle A14 through the tray angle adjusting locking knob A15, and the tray fixing limiting block A12 is provided with a terminal clamping clasp and a limiting column; the push handle A14 is annular, the push handle A14 is held horizontally or vertically, and the push handle A14 is lower than the height of the tray plate A11, so that the notebook computer, the tablet computer or the industrial computer display screen arranged on the tray plate A11 is closer to the eyes of the operator.

[0039] The push rod part comprises the push rod U-shaped fork A5, the push rod adjusting limiting lock A7 and the push rod A8. The push rod A8 is fixedly connected with the push rod U-shaped fork A5 at the top end, the push rod U-shaped fork A5 is inserted into the push rod installation adjusting limiting plate A4 and is locked and fixed through the push rod adjusting limiting lock A7, and the push rod A8 is made of carbon fiber material.

[0040] The prism prism column part comprises the precision prism B4, the prism connecting rod B6, the prism mounting frame B7, the prism column B9 and the prism column mounting plate B10. The prism column B9 is installed on the prism column mounting plate B10, the prism column B9 is made of carbon fiber material, the other end of the prism column B9 is provided with the prism mounting frame B7 through the prism connecting rod B6, the precision prism B4 is installed on the prism mounting frame B7, and the prism prism column part is installed at the prism column mounting groove of the single wheel part C through the prism column mounting plate B10. The prism prism column part is embedded in the prism column mounting plate limiting groove B11 on the AB connecting plate B13 through the prism column mounting plate B10 and is fixed in the inner cavity of the foldable part B through the prism fixing groove B8, and the prism fixing groove B8 is arranged on the fixed screw B12. The bottom of the push rod installation adjusting limiting plate A4 is provided with a splicing lap joint groove A6, and the AB connecting plate B13 is put into the splicing lap joint groove A6 when the foldable part B is spliced, so that the double wheel part A and the foldable part B are lap jointed together.

[0041] The B part fixed magnet B5 is arranged on the foldable part B, and the C part fixed magnet C5 is arranged on the single wheel part C and cooperatively connected with the B part fixed magnet B5, when the foldable part B rotates to the folding position around the connecting shaft C4, the B part fixed magnet B5 and the C part fixed magnet C5 are attracted together, and then the foldable part B is fixed to the position, so that it becomes a whole; the C part connecting plate C1 is installed at the end of the single wheel part C, the C part handle C6 is installed in the middle of the single wheel part C, the semispherical limiting convex column C3 is arranged on the C part connecting plate C1, when the foldable part B is unfolded and assembled, the B part fixed magnet B5 and the C part fixed magnet C5 are separated, the foldable part B rotates to the unfolded position around the connecting shaft C4, and the semispherical limiting convex column C3 of the C part connecting plate C1 is inserted into the circular limiting hole B3 of the BC connecting plate B1 to realize the limiting and close fitting.

[0042] The application is further described below in combination with the drawings and specific embodiments:

[0043] The application provides a folded compact rail inspection trolley, which is composed of a double wheel part A, a foldable part B and a single wheel part C. Figure 1 and Figure 2 As shown in the drawings, the external size is greatly reduced, so that the external size of the transport box is small, the volume is small, the weight is light, the use, moving and transportation are convenient; and the rail inspection trolley is quickly and conveniently disassembled and assembled.

[0044] As shown in the drawings, the single wheel part C of the application includes a C part connecting plate C1, a convex connecting shaft sleeve C2, a semispherical limiting convex column C3, a connecting shaft C4, a C part fixed magnet C5 and a C part handle C6. Figure 3

[0045] As shown in the drawings, the foldable part B of the application includes a BC connecting plate B1, a concave connecting shaft sleeve B2, a circular limiting hole B3, a precision prism B4, a B part fixed magnet B5, a prism connecting rod B6, a prism mounting frame B7, a prism fixing groove B8, a prism column B9, a prism column mounting plate B10, a prism column mounting plate limiting groove B11, a fixing screw B12 of the prism fixing groove B8 and an AB connecting plate B13. Figure 3 Figure 4

[0046] Figure 5 ​​​​As shown, the double-wheel part A of the present application comprises a walking wheel A1, a close-to-wheel A2, a close-to-wheel mounting rack A3, a push rod mounting adjusting limiting plate A4, a push rod U-shaped fork A5, an assembled lap joint groove A6, a push rod adjusting limiting lock A7, a push rod A8, a tray moving knob A9, a tray moving limiting block A10, a tray A11, a tray fixing limiting block A12, a telescopic rod telescopic rotating locking device A13, a push handle A14, a tray angle adjusting locking knob A15, a telescopic rod A16, an A part carrying handle A17, an A part longitudinal beam A18, an A part cross beam A19, and an A part supporting beam A20.

[0047] The double-wheel part A, the foldable part B, and the single-wheel part C are sequentially connected to form the main body of the T-shaped structure rail inspection trolley, and the tray part is mounted on the push rod mounting adjusting limiting plate A4 of the double-wheel part A through the push rod part; the prism and prism column part are mounted on the prism column mounting groove of the single-wheel part C through the prism column mounting plate B10. The tray part is composed of the tray moving knob A9, the tray moving limiting block A10, the tray A11, the tray fixing limiting block A12, the telescopic rod telescopic rotating locking device A13, the push handle A14, the tray angle adjusting locking knob A15, and the telescopic rod A16; the push rod part is composed of the push rod U-shaped fork A5, the push rod adjusting limiting lock A7, and the push rod A8; and the prism and prism column part is composed of the precision prism B4, the prism connecting rod B6, the prism mounting rack B7, the prism column B9, and the prism column mounting plate B10.

[0048] As shown in the accompanying drawings, Figure 3 The concave connecting shaft sleeve B2 of the BC connecting plate B1 on the foldable part B is connected with the convex connecting shaft sleeve C2 of the double-wheel part C through the connecting shaft C4, so that the foldable part B can rotate around the connecting shaft C4 to realize the folding and unfolding assembly functions; when folding and packing, the connecting shaft C4 of the foldable part B is rotated to the Figure 3 position, the B part fixed magnet B5 is attracted to the C part fixed magnet C5, the foldable part B is fixed to this position to become a whole, and the foldable part B no longer rotates; when unfolding and assembling, the B part fixed magnet B5 is separated from the C part fixed magnet C5, the connecting shaft C4 of the foldable part B is rotated to the Figure 6 position, and the hemispherical limiting convex column C3 of the single-wheel part C connecting plate C1 is inserted into the circular limiting hole B3 of the BC connecting plate B1 of the foldable part B to realize the limiting and close-fitting.

[0049] As shown in the accompanying drawings, Figure 4The prism and prism column part can be placed in the cavity of the foldable part B, so that the transport box does not need additional space to place the prism and prism column part; the prism column mounting plate B10 is embedded in the prism column mounting plate limiting groove B11 on the AB connecting plate B13, and is fixed in the cavity of the foldable part B through the prism fixing groove B8. In use, the prism and prism column part are taken out from the cavity of the foldable part B, and are mounted on the prism column mounting groove of the single-wheel part C through the prism column mounting plate B10.

[0050] As shown in the accompanying drawings Figure 5 The bottom of the double-wheel part A push rod mounting adjustment limiting plate A4 has an assembly lap joint groove A6, and when assembling, the AB connecting plate B13 on the foldable part B is placed in the assembly lap joint groove A6, so that the double-wheel part A and the foldable part B are lapped together, and then the rail inspection trolley main body can be loosened, and the connecting screws can be easily and conveniently tightened.

[0051] As shown in the accompanying drawings Figure 5 As shown in the accompanying drawings Figure 6 As shown in the accompanying drawings

[0052] As shown in the accompanying drawings Figure 1 As shown in the accompanying drawings Figure 2 When packing, the foldable part B is rotated to the folded position, the prism and prism column part are placed in the cavity of the foldable part B, are placed in the corresponding position of the transport box inner liner, and then the double-wheel part A is stacked on the upper part of the folding part, so that the space is greatly saved; the tray moving limiting block A10 and the tray fixing limiting block A12 are designed for specific models of notebook computers, tablet computers or industrial computers, and according to actual needs, the notebook computers, tablet computers or industrial computers can be not disassembled, so that rapid disassembly and packing are realized.

[0053] In the application, the push rod A8, the tray board A11 of the tray and the prism column B9 are all made of carbon fiber material, which is high in strength, durable, light in weight and reduces the overall weight.

[0054] The contents not described in detail in the specification belong to the prior art known by those skilled in the art, the standard parts used therein can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt the conventional types in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

[0055] The present application is not limited to the above-mentioned embodiments, and any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present application shall be equivalent replacements and shall be included in the protection scope of the present application.

Claims

1. A compact folded track inspection trolley characterised in that: It is composed of double-wheel part A, foldable part B and single-wheel part C, which are connected in sequence and constitute T-shaped structure track inspection trolley main body; the double-wheel part A includes tray part and push rod part, the tray part is installed on the push rod installation adjusting limiting plate (A4) of the double-wheel part A through the push rod part, the foldable part B includes BC connecting plate (B1) and prism prism column part, the BC connecting plate (B1) is provided with concave connecting shaft sleeve (B2), the concave connecting shaft sleeve (B2) is connected with the convex connecting shaft sleeve (C2) of the single-wheel part C through connecting shaft (C4), the foldable part B rotates around the connecting shaft (C4) to realize folding and unfolding assembly functions, the prism prism column part is installed at the prism column installation groove of the single-wheel part C, when the foldable part B rotates to the folded position, the prism prism column part can be placed in the inner cavity of the foldable part B, and the double-wheel part A is stacked on the upper part of the folding part. The tray part includes tray moving knob (A9), tray moving limiting block (A10), tray plate (A11), tray fixed limiting block (A12), telescopic rod telescopic rotation locking device (A13), push handle (A14), tray angle adjusting locking knob (A15) and telescopic rod (A16), the push handle (A14) is installed on the telescopic rod (A16), the telescopic rod (A16) is telescopically installed in the push rod (A8) through the telescopic rod telescopic rotation locking device (A13), the other end of the push rod (A8) is provided with push rod U-shaped fork (A5), the push rod U-shaped fork (A5) is connected with the push rod installation adjusting limiting plate (A4), the tray plate (A11) is made of carbon fiber material, the tray plate (A11) is connected with the push handle (A14) through the tray supporting rod, the tray fixed limiting block (A12) is detachably connected to the lower end of the tray plate (A11), the tray moving limiting block (A10) is detachably connected to the upper end of the tray plate (A11), and the tray moving limiting block (A10) and the tray fixed limiting block (A12) are arranged symmetrically; the tray moving limiting block (A10) is provided with a clamping clamping tongue for a terminal, the tray moving limiting block (A10) is moved and then locked by screwing the tray moving knob (A9) to clamp the terminal; the tray fixed limiting block (A12) is connected with the push handle (A14) through the tray angle adjusting locking knob (A15), and the tray fixed limiting block (A12) is provided with a clamping clamping tongue and a limiting column for a terminal; The push rod part includes push rod U-shaped fork (A5), push rod adjusting limiting lock (A7) and push rod (A8), the top end of the push rod (A8) is fixedly connected with the push rod U-shaped fork (A5), the push rod U-shaped fork (A5) is inserted into the push rod installation adjusting limiting plate (A4) and locked and fixed through the push rod adjusting limiting lock (A7), and the push rod (A8) is made of carbon fiber material; The prism prism column part comprises a precision prism (B4), a prism connecting rod (B6), a prism mounting rack (B7), a prism column (B9) and a prism column mounting plate (B10), the prism column (B9) is mounted on the prism column mounting plate (B10), the prism column (B9) is made of carbon fiber material, the other end of the prism column (B9) is provided with the prism mounting rack (B7) through the prism connecting rod (B6), the precision prism (B4) is mounted on the prism mounting rack (B7), and the prism prism column part is mounted at the prism column mounting groove of the single wheel part C through the prism column mounting plate (B10). The bottom of the push rod mounting adjusting limiting plate (A4) is provided with a splicing lap joint groove (A6), and the AB connecting plate (B13) is placed into the splicing lap joint groove (A6) when the foldable part B is spliced, so that the double wheel part A and the foldable part B are lapped together.

2. The compact folded track inspection cart of claim 1, wherein: The push rod mounting adjusting limiting plate (A4) is fixed on the A part cross beam (A19), the A part cross beam (A19) is arranged transversely, the other end of the A part cross beam (A19) is fixed on the A part longitudinal beam (A18), the A part longitudinal beam (A18) is arranged longitudinally, the A part supporting beam (A20) is mounted between the A part longitudinal beam (A18) and the A part cross beam (A19), the A part handle (A17) is arranged on the middle of the A part longitudinal beam (A18), and the close-to-wheel mounting racks (A3) are mounted on the two ends of the A part longitudinal beam (A18). The close-to-wheel mounting racks (A3) are mounted with the close-to-wheels (A2).

3. The compact folded track inspection cart of claim 1, wherein: The push handle (A14) is annular, the push handle (A14) is gripped horizontally or vertically, and the push handle (A14) is lower than the height of the supporting plate (A11), so that the display screen of the notebook computer, the tablet computer or the industrial computer arranged on the supporting plate (A11) is closer to the eyes of the operator.

4. The compact folded track inspection cart of claim 1, wherein: The foldable part B is provided with a B part fixed magnet (B5), the single wheel part C is provided with a C part fixed magnet (C5) matched with the B part fixed magnet (B5), when the foldable part B is rotated to the folded position around the connecting shaft (C4), the B part fixed magnet (B5) and the C part fixed magnet (C5) are attracted together, so as to fix the foldable part B to this position and make it an integral whole.

5. The compact folded track inspection cart of claim 4, wherein: The single wheel part C is provided with a C part connecting plate (C1) at the end, a C part handle (C6) is arranged in the middle of the single wheel part C, a hemispherical limiting convex column (C3) is arranged on the C part connecting plate (C1), when the foldable part B is spliced and unfolded, the B part fixed magnet (B5) and the C part fixed magnet (C5) are separated, the foldable part B is rotated to the unfolded position around the connecting shaft (C4), and the hemispherical limiting convex column (C3) of the C part connecting plate (C1) is inserted into the circular limiting hole (B3) of the BC connecting plate (B1) to realize limiting and close fitting.

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