Variable travel suspension vehicle auxiliary inspection device

Abstract

The application relates to the technical field of vehicle auxiliary inspection, in particular to a variable-stroke suspension vehicle auxiliary inspection device; the device comprises a base and a supporting device, the supporting device is rotatably connected to the middle part of the base; the supporting device comprises rotating shafts, each rotating shaft is rotatably connected to the base; the outer end of each rotating shaft is connected with a driving device respectively, and the inner end of the rotating shaft is fixedly connected with a supporting assembly; the supporting device further comprises a limiting device which is fixedly connected to the upper surface of the middle part of the base. The device can be used for assisting workers to check the locking and wheel lifting function of the oil-gas spring system of the variable-stroke suspension vehicle, reduces the danger and labor intensity of the inspectors, improves the inspection speed and work efficiency, and solves the problems of high labor intensity, low efficiency and high danger in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle auxiliary inspection, and particularly relates to a variable-stroke suspension vehicle auxiliary inspection device. BACKGROUND

[0002] The variable-stroke suspension vehicle can adapt to different terrains and use functions by lifting and lowering the suspension, and the locking and wheel lifting functions of the oil-gas spring system of the vehicle need to be checked during the manufacturing process of the vehicle. In the prior art, the vehicle is lifted to a certain height, and an operator needs to squat under the vehicle to place four simple support cylinders with a diameter of about 200 mm under the vehicle frame to assist in supporting the vehicle frame, which is labor-intensive for the operator and is dangerous when the operator lifts the vehicle.

[0003] CN113307178A provides a vehicle lifting device, which comprises a mounting frame fixed to a bearing surface, a lifting assembly, a rotating assembly arranged on the lifting assembly and capable of moving with the lifting assembly, a supporting assembly comprising a first supporting member connected to the rotating member and a second supporting member movably connected to the first supporting member, the second supporting member being capable of moving in a first direction perpendicular to the lifting direction, a force applying member arranged at the end of the second supporting member away from the first supporting member for supporting the stress area of the vehicle to be lifted, and an identification member arranged on the mounting frame for identifying the stress area of the vehicle to be lifted. When the identification member identifies the stress area of the vehicle to be lifted, the lifting assembly, the rotating assembly and the supporting assembly drive the force applying member to the stress area and adjust the posture of the vehicle to be lifted. It also relates to a vehicle lifting system and a vehicle lifting method. However, the prior art does not involve the auxiliary support of the variable-stroke suspension vehicle during inspection.

[0004] CN107584981A relates to a heavy commercial vehicle rear balance suspension system axle lifting mechanism, which comprises an air spring, an upper cover plate, a lower cover plate connected by bolts, an upper support connected to the upper cover plate by bolts, a bearing axle connected to the upper support by bolts, a connecting plate connected to the lower cover plate by bolts, and a vehicle frame connected to the connecting plate by bolts. Compressed air provided by the air source is simultaneously supplied to the manual valve and the relay valve through the air pipeline. The manual valve is connected to the relay valve through the air pipeline, and the relay valve is connected to the air spring through the air pipeline. The manual valve is opened and closed to control the charging and discharging of the air spring by the relay valve. However, this prior art still does not involve the auxiliary support of the variable-stroke suspension vehicle during inspection. SUMMARY

[0005] The present application aims to provide a variable-stroke suspension vehicle auxiliary inspection device, which can be used to assist workers in checking the locking and wheel lifting functions of the oil-gas spring system of the variable-stroke suspension vehicle, thereby reducing the risk and labor intensity of the inspection personnel and improving the inspection rate and work efficiency. The problems of high labor intensity, low efficiency and high risk in the prior art are solved.

[0006] The present application provides the following scheme

[0007] A variable-stroke suspension vehicle auxiliary inspection device, comprising a base and a support device, the support device is rotatably connected to the middle part of the base; the support device comprises a rotating shaft, each rotating shaft is rotatably connected with the base; the outer end of each rotating shaft is respectively connected with a driving device, and the inner end of the rotating shaft is fixedly connected with a support assembly; the support device further comprises a limiting device, which is fixedly connected to the upper surface of the middle part of the base.

[0008] Further, the base is a walking trolley, the walking trolley comprises a trolley frame, a wheel assembly and an operating handle; the wheel assembly is fixedly installed on the outer side edges of the trolley frame respectively, and the operating handle is connected to the front end of the trolley frame; the rotating shaft of the support device is rotatably connected with the trolley frame; and the limiting device is fixedly connected to the upper surface of the middle part of the trolley frame.

[0009] The base adopts a walking trolley, which can be conveniently moved in and out of the working area, and a handle is arranged on the walking trolley to facilitate pushing and pulling and adjusting the position of the trolley in the working area.

[0010] Further, the trolley frame comprises two oppositely arranged first longitudinal beams and two oppositely arranged first transverse beams, the end portions of the first longitudinal beams and the first transverse beams are connected two by two to form a rectangular frame structure; two second longitudinal beams are symmetrically arranged inside the rectangular frame structure, the second longitudinal beams are arranged in parallel with the first longitudinal beams, and the two ends of the second longitudinal beams are fixedly connected with the two first transverse beams respectively; a second transverse beam and two brackets are fixedly connected between the two second longitudinal beams perpendicularly, the second transverse beam is arranged at the middle part of the two second longitudinal beams, and the two brackets are arranged at positions close to the two ends of the two second longitudinal beams respectively.

[0011] The trolley frame is composed of aluminum alloy profiles, high-light connecting frames are used for connecting the corner joints, and connecting plates are installed at each stress point to uniformly conduct the pressure received by the support device to the frame body; the driving device is arranged between the first longitudinal beam and the second longitudinal beam; the two brackets are used to support the support assembly when the support assembly is horizontally placed, so that the support assembly does not interfere with the ground when it is turned over.

[0012] Further, the wheel assembly is four, which is fixedly connected to the four corner parts of the trolley frame respectively; the wheel assembly comprises a frame connecting plate, the frame connecting plate is fixedly connected with the first longitudinal beam of the trolley frame; the frame connecting plate is connected with a light compression spring through a connecting bolt, the lower end of the light compression spring is fixedly connected with a caster connecting plate, and the bottom surface of the caster connecting plate is fixedly connected with a caster; a guide hole is arranged on the frame connecting plate, a guide column is connected to the middle part of the top surface of the caster connecting plate, and the guide column can be limitingly sleeved in the guide hole.

[0013] When the device is under force, the force is transmitted to the frame connecting plate through the trolley frame, the frame connecting plate is lowered to compress the light compression spring until the bottom surface of the trolley frame is in contact with the ground to bear the main pressure and avoid the side slipping and damage of the casters under force; the casters are connected to the trolley frame and used for moving the trolley in the working area.

[0014] Further, the rotating shafts are four in total, two pairs, each pair of the rotating shafts is arranged on the same axis, and the two pairs of the rotating shafts are arranged symmetrically and in parallel on the two sides of the second cross beam, and each pair of the rotating shafts is arranged between the second cross beam and the corresponding side bracket; the outer ends of each of the rotating shafts are respectively exposed on the outer side of the corresponding second longitudinal beam, and the outer ends of each of the rotating shafts are respectively connected with a driving device; the middle part of the rotating shaft is rotatably connected with the second longitudinal beam through a bearing seat, and the bearing seat is fixedly connected to the inner side of the second longitudinal beam; the inner ends of each of the rotating shafts are fixedly connected with the support assembly.

[0015] The driving device is connected with the support assembly through the rotating shaft, and is used to drive the support assembly to be turned over to the vertical state for supporting work, or to be turned over to the horizontal state for storage, so as to facilitate the access to the working area; the bearing seat is arranged to make the rotating shaft rotate more smoothly, reduce noise and wear.

[0016] Further, each of the driving devices is arranged between the first longitudinal beam and the adjacent second longitudinal beam; the driving device comprises a gas cylinder, a fixed end of the gas cylinder is pivotally connected with the corresponding first cross beam, a telescopic end of the gas cylinder is fixedly connected with a driving arm, a free end of the driving arm is pivotally connected with an angle connector, and the angle connector is fixedly connected with the rotating shaft of the support device; the gas cylinders are collectively electrically connected with a control knob, and the control knob can be installed on the operation handle.

[0017] The fixed end of the gas cylinder is pivotally connected with the corresponding first cross beam through a CB double-lug base, and the telescopic end is provided with the angle connector to drive the support mechanism to be turned over in the form of a lever; the control knob is used for automatically controlling the gas cylinders, which not only saves manpower, but also is faster and safer.

[0018] Further, the support assembly comprises a bottom plate, the top surface of the bottom plate is fixedly connected with two parallel support columns, the front or rear end surface of each of the support columns is fixedly connected with the inner end of the corresponding rotating shaft, and the top ends of the two support columns are jointly connected with a support plate, and the top surface of the support plate is detachably connected with a pad plate.

[0019] Two support columns arranged on each side can save materials under the condition of meeting the bearing capacity; the height can be adjusted by replacing the pad plate to adapt to different vehicle models, and the universality is improved.

[0020] Further, the limiting device comprises a buffer seat fixedly connected with the top surface of the second cross beam, and buffer springs are fixedly connected with the left and right sides of the buffer seat respectively; the free ends of the buffer springs on each side are jointly connected with a buffer strip, and a buffer pad is fixedly connected with the outer side of the buffer strip, and the buffer pad can be in limiting contact with the counterposed support column.

[0021] The support assembly is in contact with the buffer pad when it is turned to the vertical position, which can not only play a limiting role, but also buffer the turning of the support assembly, reduce the rotational inertia generated when the support assembly is turned, reduce noise and avoid damage caused by knocking; the buffer spring can also avoid damage to the limiting device caused by the displacement of the lower pressing position.

[0022] Further, the operating handle comprises two oppositely arranged pull rods, one end of each of the two pull rods is pivotally connected with the longitudinal beam of the trolley frame, the other end of each of the two pull rods is fixedly connected with a first handrail, a second handrail and a third handrail are further fixedly connected between the two pull rods, and the control knob is installed on the first handrail or the second handrail.

[0023] The second handrail and the third handrail can enhance the rigidity of the operating handle and make it more beautiful; the control knob can be installed on the first handrail or the second handrail according to the convenience of operation; the operating handle and the trolley frame are pivotally connected, which is convenient for storage and adjustment of the pushing and pulling angle.

[0024] Further, each of the wheel assemblies comprises four lightweight compression springs, and the four lightweight compression springs are arranged circumferentially around the guide column.

[0025] This spring distribution mode makes the force on the springs more uniform, and the frame connecting plate is less likely to be skewed when it is lowered.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] The variable-stroke suspension vehicle auxiliary inspection device provided by the present application is compact in structure and convenient to use, can replace the existing split support column to support the automobile suspension, improves the work efficiency, is suitable for various vehicles, and reduces the manufacturing cost. When the variable-stroke suspension vehicle auxiliary device needs to be locked to lift the wheel and check whether the oil pressure system is effective, the wheel lifting platform trolley is pushed to the bottom of the workshop, the reverse rotation device is started through the air cylinder, the vehicle to be inspected is lifted, the locking wheel function and the oil pressure system are checked, manpower is saved, and the inspection work efficiency and safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0029] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 1 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0030] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 2 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0031] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 3 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0032] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 4 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0033] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 5 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0034] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application. Figure 6 Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0035] Figure 1 is a schematic structural diagram of the auxiliary inspection device for variable-stroke suspension vehicle according to the present application.

[0036] 1-walking trolley, 11-trolley frame, 111-first longitudinal beam, 112-first cross beam, 113-second longitudinal beam, 114-second cross beam, 115-carriage, 12-wheel assembly, 121-frame connecting plate, 122-connecting bolt, 123-light compression spring, 124-caster connecting plate, 125-caster, 126-guide column, 13-operation handle, 131-pull rod, 132-first handrail, 133-second handrail, 134-third handrail, 2-supporting device, 21-rotation shaft, 22-driving device, 221-cylinder, 222-driving arm, 223-angle connector, 224-control knob, 23-supporting assembly, 231-bottom plate, 232-supporting column, 233-supporting plate, 234-pad plate, 24-limiting device, 241-buffer seat, 242-buffer spring, 243-buffer strip, 244-buffer pad. DETAILED DESCRIPTION

[0037] In order to make the purposes, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application but not all of them. Based on the embodiments in the present application, any other embodiments obtained by those ordinarily skilled in the art without creative effort should fall into the scope of the present application.

[0038] The terms used in the embodiments of the present application are only for the purpose of describing particular embodiments and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0039] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0040] It should be understood that although the terms first, second, third, etc. can be used in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the description. For example, without departing from the scope of the embodiments of the present application, the first can also be called the second, and similarly, the second can also be called the first.

[0041] Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detecting (a stated condition or event)" can be interpreted as "when determined" or "in response to determining" or "when detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)".

[0042] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that the product or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such product or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the product or device including the element.

[0043] It should be particularly noted that the symbols and / or numbers present in the specification, if not marked in the description, are not the figure marks.

[0044] Embodiment 1, please refer to Figure 1 As shown in the figure, the embodiment provides a variable-stroke suspension vehicle auxiliary inspection device, which comprises a walking trolley 1 and a supporting device 2, and the supporting device 2 is rotatably connected to the middle part of the walking trolley 1; wherein the walking trolley 1 can be moved to a working area and adjusted in position in the working area, so as to adjust the positioning of the supporting device 2 in the working area; that is, when the walking trolley 1 is moved to a position directly below the vehicle suspension, the supporting assembly 23 of the supporting device 2 is aligned with the control arm rotating shaft 21 of the vehicle, and then the vehicle adjusts the vehicle posture and the suspension height, so that the control arm rotating shaft of the vehicle is supported on the supporting assembly 23 of the supporting device 2, and the inspection work can be carried out.

[0045] Specifically, the walking trolley 1 comprises a trolley frame 11, a wheel assembly 12 and an operation handle 13; the wheel assembly 12 is four, which is fixedly installed at four corner parts of the trolley frame 11, and can realize the movement of the walking trolley 1 assembly in the inspection site, and other number of wheel assemblies 12 can also be set according to the needs, which are installed at the edges of the trolley frame 11, which is not limited here. The operation handle 13 is connected to the front side of the trolley frame 11, which can be fixedly connected or pivotally connected, and is convenient for storage and adjustment of the push-pull angle; the walking trolley 1 can be moved to the inspection supporting area according to the pre-set track by pushing and pulling the operation handle 13.

[0046] Please refer to Figure 3 As shown in the figure, the trolley frame 11 comprises two oppositely arranged first longitudinal beams 111 and two oppositely arranged first transverse beams 112, the end parts of the first longitudinal beams 111 and the first transverse beams 112 are connected two by two to form a rectangular frame structure; two second longitudinal beams 113 are symmetrically arranged inside the rectangular frame, the second longitudinal beams 113 are arranged in parallel with the first longitudinal beams 111, and the two ends of the second longitudinal beams 113 are fixedly connected with the two first transverse beams 112; a second transverse beam 114 and two brackets 115 are fixedly connected between the two second longitudinal beams 113, the second transverse beam 114 is arranged at the middle part of the two second longitudinal beams 113, and the two brackets 115 are arranged at positions close to the two ends of the two second longitudinal beams 113, which are used to support the supporting assembly 23 when the supporting assembly 23 is horizontally placed, so that the supporting assembly 23 does not interfere with the ground when it is turned over. In the embodiment, all the components of the trolley frame 11 are welded to form a whole frame, and other connection methods such as bolt connection can also be used. As a preferred scheme, the whole trolley frame 11 is composed of aluminum alloy profiles, the high-light connection frames are used at the corner joints, and the connection plates are installed at all stress points to uniformly conduct the force to the frame body.

[0047] Please refer to Figure 4As shown, the wheel assembly 12 comprises a frame connecting plate 121 mounted on the trolley frame 11, the frame connecting plate 121 is provided with a guide hole and a bolt hole, and the bolt hole is 4 in the embodiment, and the guide hole is arranged between the four bolt holes; the bolt hole is provided with a connecting bolt 122, the frame connecting plate 121 is connected with a light compression spring 123 through the connecting bolt 122, the lower end of the light compression spring 123 is fixedly connected with a castor connecting plate 124, the bottom surface of the castor connecting plate 124 is fixedly connected with a castor 125, the castor 125 adopts a universal wheel, and movement is more flexible; the top surface of the castor connecting plate 124 is connected with a guide column 126 in the middle, and the guide column 126 is sleeved in the guide hole of the frame connecting plate 121; when the auxiliary inspection device is subjected to pressure, the light compression spring 123 is contracted through the trolley frame 11 and the frame connecting plate 121 to conduct pressure, the trolley frame 11 is lowered to touch the ground, which not only avoids the auxiliary inspection device from sliding during the inspection process, but also avoids the castor 125 from being damaged due to excessive pressure.

[0048] Please refer to Figure 1 As shown, the operating handle 13 comprises a pull rod 131 and a handrail, and in the embodiment, two oppositely arranged pull rods 131 are included, one end of the two pull rods 131 is connected with the trolley frame 11, the other end is fixedly connected with a first handrail 132, and a second handrail 133 and a third handrail 134 are further fixedly connected between the two pull rods 131, which can enhance the rigidity of the operating handle 13 and make it more beautiful.

[0049] Specifically, please refer to Figure 2 As shown, the supporting device 2 comprises a rotating shaft 21, the rotating shaft 21 is four in total, two pairs, each pair of rotating shafts 21 is arranged on the same axis, and the two pairs of rotating shafts 21 are symmetrically arranged on the two sides of the second cross beam 114 and between the second cross beam 114 and the bracket 115, the outer end of each rotating shaft 21 respectively penetrates through the corresponding second longitudinal beam 113 and is rotatably connected with the second longitudinal beam 113, and a bearing seat is arranged on the inner side of the second longitudinal beam 113 and connected with the rotating shaft 21; the outer end of each rotating shaft 21 is respectively connected with a driving device 22, the inner end of the rotating shaft 21 is fixedly connected with a supporting assembly 23, and the supporting device 2 further comprises a limiting device 24, which is fixedly connected to the second cross beam 114 of the trolley frame 11.

[0050] Specifically, please refer to Figure 2 and Figure 5As shown, the driving device 22 in the embodiment is four, which is arranged between the first longitudinal beam 111 and the adjacent second longitudinal beam 113, each driving device 22 includes a cylinder 221, a driving arm 222 and an angle connector 223; the fixed end of the cylinder 221 is pivotally connected with the corresponding first transverse beam 112 by a CB double lug base, the telescopic end of the cylinder 221 is fixedly connected with the driving arm 222, the free end of the driving arm 222 is pivotally connected with the angle connector 223, and the angle connector 223 is fixedly connected with the rotating shaft 21 of the supporting device 2; the angle connector 223 can drive the rotating shaft 21 to rotate through the cylinder 221, so as to drive the supporting assembly 23 to overturn; the cylinders 221 are collectively electrically connected with a control knob 224, the control knob 224 can be installed on the first handrail 132 or the second handrail 133, and the control knob 224 can control the cylinder 221 to drive the supporting assembly 23 to overturn to the horizontal position for storage, which facilitates the movement of the walking car 1 in and out of the working area, and also can control the cylinder 221 to drive the supporting assembly 23 to overturn to the vertical position to support the suspension for operation.

[0051] As shown in the drawings, Figure 2 As shown, the supporting assembly 23 includes a bottom plate 231, the top surface of the bottom plate 231 is fixedly connected with two parallel supporting columns 232, the outer sides of the two supporting columns 232 are respectively fixedly connected with the inner ends of the rotating shaft 21, and the top ends of the two supporting columns 232 are jointly connected with a supporting plate 233; the top surface of the supporting plate 233 is detachably connected with a pad 234, and the pad 234 is made of polyurethane; the supporting assembly 23 does not interfere with the ground when overturning, the height of the supporting assembly 23 is about 520 mm, and the height can be adjusted by replacing the pad 234 during use, so as to adapt to different vehicle models and improve the versatility.

[0052] As shown in the drawings, Figure 6 As shown, the limiting device 24 includes a buffer seat 241, the buffer seat 241 is fixedly connected with the top surface of the second transverse beam 114, and the left and right sides of the buffer seat 241 are respectively fixedly connected with buffer springs 242; in the embodiment, three buffer springs 242 are symmetrically arranged on the left and right sides of the buffer seat 241, and different numbers can also be arranged according to needs; the free ends of the buffer springs 242 on each side are jointly connected with a buffer strip 243, and the outer side of the buffer strip 243 is fixedly connected with a buffer pad 244; when the supporting assembly 23 overturns to the vertical position, the buffer pad 244 is in contact with the buffer pad 244, which can not only play a limiting role, but also play a buffering role on the overturning of the supporting assembly 23, so as to reduce the rotational inertia generated when the supporting assembly 23 overturns, reduce noise and avoid damage caused by knocking; the buffer springs 242 can also avoid damage to the limiting device 24 caused by the offset of the lower pressing position.

[0053] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A variable-stroke suspension vehicle auxiliary inspection device, characterized by, The utility model provides a kind of support device and walking trolley, including base and support device (2), the support device (2) is rotatably connected in the middle of the base;The support device (2) includes pivot (21), each pivot (21) is rotatably connected with the base;The outer end of each pivot (21) is connected with driving device (22) respectively, and the inner end of pivot (21) is fixedly connected with support assembly (23);The support device (2) further includes limiting device (24), and the limiting device (24) is fixedly connected on the upper surface of the middle of the base;The base is walking trolley (1), and the walking trolley (1) includes trolley frame (11), wheel assembly (12) and operating handle (13);The wheel assembly (12) is fixedly installed on the outer side edge of the trolley frame (11) respectively, and the operating handle (13) is connected to the front end of the trolley frame (11);The pivot (21) of the support device (2) is rotatably connected with the trolley frame (11);The limiting device (24) is fixedly connected on the upper surface of the middle of the trolley frame (11);The trolley frame (11) includes two oppositely arranged first longitudinal beams (111) and two oppositely arranged first cross beams (112), and the end of the first longitudinal beam (111) and the first cross beam (112) is connected to form a rectangular frame structure;Two second longitudinal beams (113) are symmetrically arranged inside the rectangular frame, and the second longitudinal beam (113) is arranged in parallel with the first longitudinal beam (111), and the two ends of the second longitudinal beam (113) are fixedly connected with two first cross beams (112) respectively;Second cross beam (114) and two brackets (115) are fixedly connected vertically between the two second longitudinal beams (113), the second cross beam (114) is arranged in the middle of the two second longitudinal beams (113), and the two brackets (115) are arranged at positions close to the two ends of the two second longitudinal beams (113) respectively;Each driving device (22) is arranged between the first longitudinal beam (111) and the adjacent second longitudinal beam (113);The driving device (22) includes cylinder (221), and the fixed end of the cylinder (221) is pivotally connected with the first cross beam (112) on the corresponding side, and the telescopic end of the cylinder (221) is fixedly connected with driving arm (222), the free end of the driving arm (222) is pivotally connected with angle connector (223), and the angle connector (223) is fixedly connected with the pivot (21) of the support device (2);Each cylinder (221) is commonly electrically connected to control knob (224), and the control knob (224) can be installed on the operating handle (13).

2. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 1, characterized by, Said wheel assembly (12) is four, respectively fixedly connected to the four corner portions of the trolley frame (11); the wheel assembly (12) comprises a frame connecting plate (121), which is fixedly connected with the first longitudinal beam (111) of the trolley frame (11); the frame connecting plate (121) is connected with a light compression spring (123) through a connecting bolt (122), the lower end of the light compression spring (123) is fixedly connected with a caster connecting plate (124), the bottom surface of the caster connecting plate (124) is fixedly connected with a caster (125); the frame connecting plate (121) is provided with a guide hole, the top surface of the caster connecting plate (124) is connected with a guide column (126), and the guide column (126) can be limitingly and slidingly sleeved in the guide hole of the frame connecting plate (121).

3. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 1, characterized by, Said rotating shaft (21) is two pairs of four, each pair of rotating shafts (21) is coaxial; two pairs of rotating shafts (21) are parallel and symmetrically arranged on the two sides of the second cross beam (114), and each pair of rotating shafts (21) is arranged between the second cross beam (114) and the corresponding side bracket (115); the outer end of each rotating shaft (21) is exposed on the outer side of the corresponding second longitudinal beam (113), and the outer end of each rotating shaft (21) is connected with a driving device (22); the middle part of the rotating shaft (21) is rotatably connected with the second longitudinal beam (113) through a bearing seat, and the bearing seat is fixedly connected to the inner side of the second longitudinal beam (113); the inner end of each rotating shaft (21) is fixedly connected with the support assembly (23).

4. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 3, characterized by Said support assembly (23) comprises a bottom plate (231), the top surface of the bottom plate (231) is fixedly connected with two parallel support columns (232), the front or rear end surface of each of the two support columns (232) is fixedly connected with the inner end of the corresponding rotating shaft (21), and the top ends of the two support columns (232) are jointly connected with a support plate (233), and the top surface of the support plate (233) is detachably connected with a pad plate (234).

5. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 4, characterized by Said limiting device (24) comprises a buffer seat (241), the buffer seat (241) is fixedly connected with the top surface of the second cross beam (114), and the left and right sides of the buffer seat (241) are fixedly connected with buffer springs (242); the free ends of the buffer springs (242) on each side are jointly connected with a buffer strip (243), the outer side of the buffer strip (243) is fixedly connected with a buffer pad (244), and the buffer pad (244) can be limitedly in contact with the corresponding support column (232).

6. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 5, characterized by The operating handle (13) comprises two oppositely arranged pull rods (131), one end of the two pull rods (131) is pivotally connected with the longitudinal beam of the trolley frame (11), the other end of the pull rod (131) is fixedly connected with a first handrail (132), a second handrail (133) and a third handrail (134) are further fixedly connected between the two pull rods (131), and the control knob (224) is installed on the first handrail (132) or the second handrail (133).

7. The variable-travel suspension vehicle auxiliary inspection apparatus according to claim 2, characterized by Each of the wheel assemblies (12) comprises four light compression springs (123), and the four light compression springs (123) are uniformly arranged in a circumferential direction around the guide column (126).

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