Test instrument transfer trolley and transfer method

Abstract

The invention provides a test instrument transfer trolley and a transfer method.The test instrument transfer trolley comprises a trolley body, first rollers arranged at one end of the trolley body, a supporting assembly arranged on one side of the trolley body and a movable wheel assembly arranged on the other opposite side of the trolley body, and the first rollers are rotationally connected with the trolley body; the supporting assembly is fixedly arranged at the end, close to the first roller, of the vehicle body. The movable wheel assembly comprises a hinge assembly, a second roller and a locking mechanism, the hinge assembly is hinged to the vehicle body, the second roller is rotationally connected with the hinge assembly, and the vehicle body is supported by the first roller and the second roller jointly; when the hinge assembly rotates relative to the vehicle body, the movable wheel assembly has a plurality of different supporting states, so that the vehicle body is in different postures; the locking mechanism is connected with the hinge assembly and the vehicle body and used for locking the hinge assembly and the vehicle body so that the movable wheel assembly can be kept in the needed supporting state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary test tooling of construction machinery, and particularly to a test instrument transfer trolley and a transfer method. BACKGROUND

[0002] A rotary drilling rig is a common construction machinery. Before leaving the factory, the rotary drilling rig generally undergoes traction force testing to determine the maximum traction force of the rotary drilling rig.

[0003] Currently, when the traction force of a rotary drilling rig is tested, the tension sensor is adjusted to be in a vertical state, the upper end of the tension sensor is connected to a test vehicle (i.e., the rotary drilling rig being tested) through a pin shaft, and the lower end of the tension sensor is connected to a ground anchor fixed on the ground; then the engine power of the test vehicle is adjusted to the maximum, so that the test vehicle exerts a pulling force on the tension sensor, thereby determining the maximum traction force of the test vehicle through the tension sensor.

[0004] The tension sensor is a fragile device, which is generally stored indoors when not in use, and is carried outdoors to a test site by a trolley when in use, and is carried indoors again by the trolley after use. Since the tension sensor is heavy, and the current trolley cannot adjust the attitude of the trolley body, it is inconvenient to transfer the tension sensor by the trolley. Moreover, the tension sensor needs to be adjusted in attitude when being installed on the test vehicle, and the current trolley cannot adjust the attitude of the tension sensor. SUMMARY

[0005] The present application aims to provide a test instrument transfer trolley, which can facilitate the transfer of test instruments and the alignment and installation of test instruments and test vehicles.

[0006] The present application provides a test instrument transfer trolley, which comprises a trolley body, a first roller arranged at one end of the trolley body, a support assembly arranged at one side of the trolley body, and a movable wheel assembly arranged at the other side of the trolley body opposite to the one side, the first roller being rotatably connected to the trolley body; the support assembly is fixedly arranged at one end of the trolley body close to the first roller, and is used for bearing a test instrument; The movable wheel assembly comprises a hinge assembly, a second roller, and a locking mechanism, the hinge assembly being hingedly connected to the trolley body, the second roller being rotatably connected to the hinge assembly, and the trolley body being supported by the first roller and the second roller; when the hinge assembly rotates relative to the trolley body, the movable wheel assembly has a plurality of different support states, so that the trolley body assumes different attitudes; The locking mechanism is connected with the hinge assembly and the vehicle body respectively, and is used for locking the hinge assembly and the vehicle body, so that the movable wheel assembly is kept in a required supporting state.

[0007] Further, the movable wheel assembly has a first supporting state, a second supporting state and a third supporting state. When the movable wheel assembly is in the first supporting state, the second roller is located at one end of the vehicle body away from the first roller, and the vehicle body is in a lying posture. When the movable wheel assembly is in the second supporting state, the second roller is located between opposite ends of the vehicle body, and the vehicle body is in an inclined posture. When the movable wheel assembly is in the third supporting state, the second roller is located at one end of the vehicle body close to the first roller, and the vehicle body is in a standing posture.

[0008] Further, the hinge assembly includes a pull rod and a support rod, the first end of the support rod is hinged with the vehicle body, and the second end of the support rod is rotationally connected with the second roller; the first end of the pull rod is hinged with the support rod, and the second end of the pull rod can be connected with different parts of the vehicle body, so that the movable wheel assembly is in different supporting states; the locking mechanism is connected with the pull rod and the vehicle body respectively, and is used for locking the pull rod and the vehicle body.

[0009] Further, the locking mechanism includes a locking pin, a first lock hole and a plurality of second lock holes, the first lock hole is arranged on the second end of the pull rod, and a plurality of the second lock holes are arranged on the vehicle body in intervals; When the hinge assembly rotates relative to the vehicle body, the first lock hole on the pull rod can correspond to a plurality of the second lock holes on the vehicle body respectively, and the locking pin can be simultaneously inserted into the first lock hole and the corresponding second lock hole, so as to lock the pull rod and the vehicle body.

[0010] Further, the plurality of second lock holes include a first sub-lock hole, a second sub-lock hole and a third sub-lock hole; the movable wheel assembly has a first supporting state, a second supporting state and a third supporting state. When the locking pin is simultaneously inserted into the first lock hole and the first sub-lock hole, the movable wheel assembly is kept in the first supporting state. When the locking pin is simultaneously inserted into the first lock hole and the second sub-lock hole, the movable wheel assembly is kept in the second supporting state. When the locking pin is simultaneously inserted into the first lock hole and the third sub-lock hole, the movable wheel assembly is kept in the third supporting state.

[0011] Further, the pull rod is an arc-shaped rod curved towards a side away from the vehicle body.

[0012] Further, a limiting assembly is further included, which is arranged on the vehicle body and located at the same side of the supporting assembly; the limiting assembly is used for limiting the test instrument on the vehicle body.

[0013] Further, a rotatable pulley is arranged on the supporting assembly and used for bearing the test instrument; the test instrument can slide out of the test instrument transfer trolley through the pulley.

[0014] Further, a handle is arranged on the vehicle body away from the first roller.

[0015] The application further provides a test instrument transfer method based on the test instrument transfer trolley, which comprises the following steps: placing the test instrument on the test instrument transfer trolley; when the test instrument is stored, adjusting the movable wheel assembly to a first supporting state to make the vehicle body and the test instrument in a lying posture; when the test instrument is used, adjusting the movable wheel assembly to a second supporting state to make the vehicle body and the test instrument in an inclined posture, and then moving the test instrument transfer trolley through the first roller and the second roller; after the test instrument transfer trolley is moved to a designated position, adjusting the movable wheel assembly to a third supporting state to make the vehicle body and the test instrument in a standing posture, and then transferring the test instrument out of the test instrument transfer trolley.

[0016] The test instrument transfer trolley provided by the application can realize the transformation of the posture of the vehicle body through the arrangement of the first roller and the movable wheel assembly, and the movable wheel assembly comprises a hinge assembly, a second roller and a locking mechanism, the movable wheel assembly has multiple different supporting states through the rotation of the hinge assembly relative to the vehicle body, and the vehicle body has different postures, the locking mechanism can lock the hinge assembly and the vehicle body to make the movable wheel assembly remain in the required supporting state, so that the test instrument can be conveniently transferred and stored, and the posture of the test instrument can be adjusted when the test instrument is installed, and the test instrument can be conveniently installed in the test vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a perspective view of the test instrument transfer trolley in the embodiment of the application.

[0018] Figure 2 Fig. 2 is a side view of the test instrument transfer trolley in the embodiment of the application. Figure 1 Fig. 3 is a rear view of the test instrument transfer trolley in the embodiment of the application.

[0019] Figure 3 is a front view. Figure 1

[0020] Figure 4 is a structural schematic view of the test instrument when placed on the test instrument transfer trolley in the embodiment of the present application.

[0021] Figure 5 is a side view when the test instrument transfer trolley is in a lying posture. Figure 4

[0022] Figure 6 is a side view when the test instrument transfer trolley is in an inclined posture. Figure 4

[0023] Figure 7 is a side view when the test instrument transfer trolley is in a standing posture. Figure 4 DETAILED DESCRIPTION The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0024] In the specification and claims of the present application, the terms "first", "second", "third", "fourth" and the like (if any) are used to distinguish similar objects, and are not necessarily used to describe a particular order or sequence.

[0025] In the specification and claims of the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom" and the like (if any) are defined by the position of the structure in the drawing and the position of the structure relative to each other, only to express the technical solution clearly and conveniently. It should be understood that the use of the terms should not limit the scope of the application claimed.

[0026] As shown in

[0027] The embodiment of the present application provides a test instrument transfer trolley for the transfer and storage of a test instrument 7; of course, in other embodiments, the test instrument transfer trolley can also be used only for the transfer of the test instrument 7 (i.e. the test instrument 7 is not placed on the transfer trolley when stored). In this embodiment, the test instrument 7 is a tension sensor, which is roughly in the shape of a rectangular parallelepiped, and is used for the traction test of engineering machinery, which can be a rotary drilling rig, an excavator, a crane, etc. which needs to be tested for traction. Of course, in other embodiments, the test instrument 7 can also be other test devices. Figures 1 to 7

[0028] ​​​​The test instrument transport trolley includes a body 1, a first roller 2 located at one end of the body 1, a support assembly 3 located on one side of the body 1, and a movable wheel assembly 4 located on the opposite side of the body 1. The first roller 2 is rotatably connected to the body 1. The support assembly 3 is fixedly located on the body 1 near the first roller 2 and is used to support the test instrument 7. A handle 6 is located on the end of the body 1 away from the first roller 2, allowing the operator to push or pull the transport trolley. Specifically, in this embodiment, the first roller 2 is located at the bottom of the body 1, and the handle 6 is located at the top of the body 1; the support assembly 3 is located at the front and bottom of the body 1, and the movable wheel assembly 4 is located at the rear of the body 1.

[0029] The movable wheel assembly 4 includes a hinge assembly 41, a second roller 42, and a locking mechanism 43. The hinge assembly 41 is hinged to the vehicle body 1, and the second roller 42 is rotatably connected to the hinge assembly 41. The vehicle body 1 is supported by the first roller 2 and the second roller 42. The movement of the test instrument transfer trolley is achieved by the rolling of the first roller 2 and the second roller 42.

[0030] When the hinge assembly 41 rotates relative to the vehicle body 1, the movable wheel assembly 4 has multiple different support states, thus allowing the vehicle body 1 to assume different postures. The locking mechanism 43 is connected to both the hinge assembly 41 and the vehicle body 1. The locking mechanism 43 is used to lock the hinge assembly 41 and the vehicle body 1, preventing the hinge assembly 41 from continuing to rotate, thereby keeping the movable wheel assembly 4 in the required support state and thus keeping the vehicle body 1 in the required posture.

[0031] The test instrument transport trolley provided in this embodiment of the invention, by setting a first roller 2 and a movable wheel assembly 4, the movable wheel assembly 4 includes a hinge assembly 41, a second roller 42 and a locking mechanism 43, allows the movable wheel assembly 4 to have multiple different support states by rotating the hinge assembly 41 relative to the vehicle body 1, thereby allowing the vehicle body 1 to assume different postures and realize the change of posture of the vehicle body 1. At the same time, the locking mechanism 43 can lock the hinge assembly 41 and the vehicle body 1 to keep the movable wheel assembly 4 in the required support state, thereby keeping the vehicle body 1 and the test instrument 7 in the required posture. This not only facilitates the transport and storage of the test instrument 7, but also allows for the adjustment of the posture of the test instrument 7 during installation, thereby facilitating the alignment and installation of the test instrument 7 with the test vehicle.

[0032] Furthermore, such as Figures 5 to 7 As shown, in this embodiment, when the hinge assembly 41 rotates relative to the vehicle body 1, the movable wheel assembly 4 has a first support state, a second support state, and a third support state.

[0033] like Figure 5As shown, when the movable wheel assembly 4 is in the first supported state, the second roller 42 is located at the end of the vehicle body 1 away from the first roller 2 (i.e., the second roller 42 and the first roller 2 are located at opposite ends of the vehicle body). At this time, the vehicle body 1 is in a flat position, that is, the transfer trolley is in a flat position. In this position, the testing instrument 7 placed on the transfer trolley is also in a flat position. The testing instrument 7 is mainly supported by the vehicle body 1 (i.e., the weight of the testing instrument 7 is mainly directly loaded on the vehicle body 1). In this position, since the transfer trolley and the testing instrument 7 are in a flat position, the center of gravity of the transfer trolley and the testing instrument 7 is relatively stable and will not easily tip over, thus facilitating the stable storage of the testing instrument 7 on the transfer trolley. When the vehicle body 1 is in a flat position, the vehicle body 1 can be completely horizontal or approximately horizontal. The angle between the vehicle body 1 and the horizontal direction can be, for example, 0° to 10°, but is not limited to this.

[0034] like Figure 6 As shown, when the movable wheel assembly 4 is in the second support state, the second roller 42 is located between the two opposite ends of the vehicle body 1 (i.e., the second roller 42 is neither close to the top nor the bottom of the vehicle body 1, but between the top and bottom of the vehicle body 1). At this time, the vehicle body 1 is tilted, that is, the transfer trolley is tilted. In this posture, the testing instrument 7 placed on the transfer trolley is also tilted. The testing instrument 7 is supported by the vehicle body 1 and the support assembly 3 (i.e., the weight of the testing instrument 7 is directly loaded on the vehicle body 1 and the support assembly 3). In this posture, because the transfer trolley and the testing instrument 7 are tilted, it is convenient for the operator to push the transfer trolley with the handle 6 to move the testing instrument 7. When the vehicle body 1 is tilted, the angle between the vehicle body 1 and the horizontal direction can be, for example, 40°~70°, but is not limited to this.

[0035] like Figure 7 As shown, when the movable wheel assembly 4 is in the third support state, the second roller 42 is located at the end of the vehicle body 1 closest to the first roller 2 (i.e., the second roller 42 is also located at the bottom of the vehicle body 1). At this time, the vehicle body 1 is in a standing posture, that is, the transfer trolley is in a standing posture. In this posture, the testing instrument 7 placed on the transfer trolley is also in a standing posture. The testing instrument 7 is mainly supported by the support assembly 3 (i.e., the weight of the testing instrument 7 is mainly directly loaded on the support assembly 3). In this posture, since the transfer trolley and the testing instrument 7 are in a standing posture, it is convenient for the operator to move the testing instrument 7 out of the transfer trolley, and it is also convenient for the testing instrument 7 to be aligned and installed with the testing vehicle. When the vehicle body 1 is in a standing posture, the vehicle body 1 can be completely vertical or approximately vertical. The angle between the vehicle body 1 and the vertical direction can be, for example, 0° to 10°, but is not limited to this.

[0036] Furthermore, such as Figures 1 to 3As shown, in the embodiment, the hinge assembly 41 comprises a pull rod 411 and a support rod 412, the first end of the support rod 412 is hinged with the vehicle body 1, and the second roller 42 is rotationally connected with the second end of the support rod 412. The first end of the pull rod 411 is hinged with the support rod 412, and the second end of the pull rod 411 can be connected with different parts of the vehicle body 1 to make the movable wheel assembly 4 in different support states. Among them, the hinged part of the pull rod 411 and the support rod 412 is located between the first end and the second end of the support rod 412, and is closer to the first end of the support rod 412; the hinged part of the pull rod 411 and the vehicle body 1 is located on the side of the first end of the support rod 412 away from the first roller 2. The first end of the support rod 412 and the vehicle body 1, and the first end of the pull rod 411 and the support rod 412 can be hinged respectively through the pin shaft (not numbered in the figure). The locking mechanism 43 is connected with the pull rod 411 and the vehicle body 1 respectively, and the locking mechanism 43 is used for locking the pull rod 411 and the vehicle body 1, so that the hinge assembly 41 cannot continue to rotate, thereby making the movable wheel assembly 4 remain in the required support state.

[0037] Further, as shown in Figures 1 to 3 , in the embodiment, the locking mechanism 43 comprises a locking pin 431, a first lock hole 432 and a plurality of second lock holes 433, the first lock hole 432 is arranged on the second end of the pull rod 411, and the plurality of second lock holes 433 are arranged on the vehicle body 1 in intervals, specifically, the plurality of second lock holes 433 are arranged in intervals along the length direction of the vehicle body 1. When the hinge assembly 41 rotates relative to the vehicle body 1, the first lock hole 432 on the pull rod 411 can correspond to the plurality of second lock holes 433 on the vehicle body 1 respectively, the locking pin 431 can be inserted into the first lock hole 432 and the corresponding second lock hole 433 at the same time, so as to lock the pull rod 411 and the vehicle body 1, thereby making the movable wheel assembly 4 remain in the required support state. At the same time, the locking mechanism 43 further comprises a plug pin 434 (specifically a spring plug pin), the plug pin 434 is inserted and matched with the locking pin 431 to limit the locking pin 431, preventing the locking pin 431 from falling off.

[0038] Further, as shown in Figure 1 , Figures 5 to 7 , in the embodiment, the plurality of second lock holes 433 comprise a first sub-lock hole 433A, a second sub-lock hole 433B and a third sub-lock hole 433C, which are arranged in intervals from top to bottom.

[0039] As shown in Figure 1 and Figure 5 , when the locking pin 431 is inserted into the first lock hole 432 and the first sub-lock hole 433A at the same time, the movable wheel assembly 4 remains in the first support state; As shown in Figure 1 and Figure 6As shown, when the locking pin 431 is inserted into the first locking hole 432 and the second sub-locking hole 433B at the same time, the movable wheel assembly 4 is kept in the second supporting state; As shown, when the locking pin 431 is inserted into the first locking hole 432 and the second sub-locking hole 433B at the same time, the movable wheel assembly 4 is kept in the second supporting state; Figure 1 As shown, when the locking pin 431 is inserted into the first locking hole 432 and the third sub-locking hole 433C at the same time, the movable wheel assembly 4 is kept in the third supporting state. Figure 7 Further, as shown, in the present embodiment, the supporting rod 412 is a straight rod, and the pull rod 411 is an arc-shaped rod which is curved towards the side away from the vehicle body 1, so that when the movable wheel assembly 4 is in the third supporting state, the pull rod 411 can avoid the joint part of the supporting rod 412 and the vehicle body 1 to avoid interference (as shown, when the movable wheel assembly 4 is in the third supporting state, if the pull rod 411 is a straight rod, the pull rod 411 will be approximately in the same straight line with the supporting rod 412, at this time, the pull rod 411 will interfere with the joint part of the supporting rod 412 and the vehicle body 1).

[0040] Figure 1 Further, as shown, in the present embodiment, the vehicle body 1 comprises a plurality of cross beams 11 and a plurality of longitudinal beams 12, the cross beams 11 extend horizontally (left and right), and the plurality of cross beams 11 are arranged in an upper and lower interval; the longitudinal beams 12 extend vertically, and the plurality of longitudinal beams 12 are arranged in a left and right interval; the vehicle body 1 is welded by the plurality of cross beams 11 and the plurality of longitudinal beams 12. In the present embodiment, the number of cross beams 11 is four, and the number of longitudinal beams 12 is two, and the opposite ends of each cross beam 11 are respectively welded and fixed with the two longitudinal beams 12. The number of handles 6 is two, and the two handles 6 are respectively fixedly connected with the top ends of the two longitudinal beams 12, the handle 6 can be an integral structure with the longitudinal beam 12, and the handle 6 is curved from the top end of the longitudinal beam 12; the handle 6 and the longitudinal beam 12 can also be a split structure, and the handle 6 is fixed with the longitudinal beam 12 by welding. The number of first rollers 2 is two, and the two first rollers 2 are respectively rotationally connected with the bottom ends of the two longitudinal beams 12. Figure 7

[0041] Further, as shown, in the present embodiment, the vehicle body 1 comprises a plurality of cross beams 11 and a plurality of longitudinal beams 12, the cross beams 11 extend horizontally (left and right), and the plurality of cross beams 11 are arranged in an upper and lower interval; the longitudinal beams 12 extend vertically, and the plurality of longitudinal beams 12 are arranged in a left and right interval; the vehicle body 1 is welded by the plurality of cross beams 11 and the plurality of longitudinal beams 12. In the present embodiment, the number of cross beams 11 is four, and the number of longitudinal beams 12 is two, and the opposite ends of each cross beam 11 are respectively welded and fixed with the two longitudinal beams 12. The number of handles 6 is two, and the two handles 6 are respectively fixedly connected with the top ends of the two longitudinal beams 12, the handle 6 can be an integral structure with the longitudinal beam 12, and the handle 6 is curved from the top end of the longitudinal beam 12; the handle 6 and the longitudinal beam 12 can also be a split structure, and the handle 6 is fixed with the longitudinal beam 12 by welding. The number of first rollers 2 is two, and the two first rollers 2 are respectively rotationally connected with the bottom ends of the two longitudinal beams 12. Figures 1 to 3

[0042] ​​​In this embodiment, the movable wheel assembly 4 is located at the center of the vehicle body 1 along its left-right direction. A connecting longitudinal beam 13 is provided on the vehicle body 1, positioned at the center of the vehicle body 1 along its left-right direction. The connecting longitudinal beam 13 is welded and fixed to the crossbeam 11. The connecting longitudinal beam 13 extends vertically, and multiple second locking holes 433 are provided on the connecting longitudinal beam 13, spaced apart along the length of the connecting longitudinal beam 13. That is, the second end of the pull rod 411 can be connected to different parts of the connecting longitudinal beam 13 via a locking pin 431. The first end of the support rod 412 is hinged to the connecting longitudinal beam 13. Specifically, a fixing block 14 is welded onto the connecting longitudinal beam 13, and the first end of the support rod 412 is hinged to the fixing block 14. In this embodiment, the connecting longitudinal beam 13 is divided into two sections by a middle crossbeam 11, namely an upper section and a lower section (not labeled in the figure). Both ends of the upper section and both ends of the lower section are welded and fixed to the crossbeam 11 respectively. Multiple second locking holes 433 are provided on the upper section of the connecting longitudinal beam 13. The first end of the support rod 412 is hinged to the lower section of the connecting longitudinal beam 13.

[0043] Of course, in other embodiments, the vehicle body 1 can also be other structures.

[0044] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the support assembly 3 is perpendicular to the vehicle body 1; however, in other embodiments, the support assembly 3 may not be perpendicular to the vehicle body 1. The support assembly 3 includes a support rod 31 extending along the front-rear direction of the vehicle body 1. The support rod 31 is fixedly connected to the bottom end of the vehicle body 1 and is used to support the testing instrument 7. In this embodiment, there are two support rods 31, spaced apart horizontally. Both support rods 31 are welded and fixed to the bottommost crossbeam 11 of the vehicle body 1. The support assembly 3 also includes a connecting rod 32 and a reinforcing plate 33. The two ends of the connecting rod 32 are welded and fixed to the two support rods 31 respectively, and the reinforcing plate 33 is welded and fixed to both the support rods 31 and the vehicle body 1 to provide reinforcement and improve the structural strength and load-bearing capacity of the support assembly 3. Of course, in other embodiments, the support assembly 3 may have other structural forms.

[0045] Furthermore, such as Figures 1 to 4 and Figure 7As shown, in the embodiment, the support assembly 3 is provided with a rotatable pulley 30, and the pulley 30 is used to carry the test instrument 7 (i.e. the test instrument 7 is placed on the pulley 30); when the movable wheel assembly 4 is in the third support state, the test instrument 7 can slide to the outside of the test instrument transfer trolley through the pulley 30, and when the test instrument 7 is placed back on the transfer trolley, the test instrument 7 can also slide to the support assembly 3 through the pulley 30, so as to save labor and facilitate the carrying of the test instrument 7. Specifically, in the embodiment, the two supporting rods 31 of the support assembly 3 are each provided with a pulley 30, and the pulley 30 is rotatably connected with the supporting rod 31. In other embodiments, the connecting rod 32 can also be provided with a pulley 30.

[0046] Further, as shown, Figures 1 to 4 In the embodiment, the test instrument transfer trolley further comprises a limiting assembly 5, the limiting assembly 5 is arranged on the trolley body 1, and the limiting assembly 5 and the support assembly 3 are located on the same side of the trolley body 1, i.e. the limiting assembly 5 is located on the front side of the trolley body 1; the limiting assembly 5 and the support assembly 3 are arranged in an up-down interval, and the limiting assembly 5 is located above the support assembly 3, and in the embodiment, the limiting assembly 5 is located at the middle position of the trolley body 1 in the up-down direction. The limiting assembly 5 is used to limit the test instrument 7 on the trolley body 1, so as to prevent the test instrument 7 from being separated from the transfer trolley during storage and transfer. In the embodiment, the limiting assembly 5 is detachably connected with the trolley body 1, and when it is necessary to take out the test instrument 7 from the transfer trolley, the limiting assembly 5 is first detached, and then the test instrument 7 can be taken out. Of course, in other embodiments, the limiting assembly 5 and the trolley body 1 can also be connected in an openable and closable manner, for example, one side of the limiting assembly 5 is rotatably connected with the trolley body 1, and the other side is locked with the trolley body 1 through a locking mechanism, so that the opening and closing of the limiting assembly 5 can also be realized.

[0047] Specifically, in the embodiment, the limiting assembly 5 comprises fixed limiting rods 51 and movable limiting rods 52, the fixed limiting rods 51 extend along the front-rear direction of the vehicle body 1, and the movable limiting rods 52 extend along the left-right direction of the vehicle body 1; the number of the fixed limiting rods 51 is two, and the two fixed limiting rods 51 are fixed to the left and right sides of the vehicle body 1 respectively; specifically, one end of each of the two fixed limiting rods 51 is welded to the two longitudinal beams 12 of the vehicle body 1, and the other end of each of the two fixed limiting rods 51 is provided with a threaded hole (not numbered in the figure); both ends of the movable limiting rod 52 are provided with bolt holes 521, and the two ends of the movable limiting rod 52 are fixed to the two fixed limiting rods 51 through bolts 53, that is, the bolts 53 pass through the bolt holes 521 on the movable limiting rod 52 and are connected to the threaded holes on the fixed limiting rods 51 through threads. The bolt holes 521 at both ends of the movable limiting rod 52 are long strip-shaped holes, and the bolt hole 521 at one end is a closed hole (that is, it has no opening), and the bolt hole 521 at the other end is a U-shaped hole (that is, it has an opening), so as to facilitate the adjustment of the position of the movable limiting rod 52 and the connection of the movable limiting rod 52 and the fixed limiting rod 51. The fixed limiting rods 51 are used to limit the test instrument 7 in the left-right direction, and the movable limiting rods 52 are used to limit the test instrument 7 in the front-rear direction. When the test instrument 7 needs to be taken out of the transfer trolley, the bolts 53 are first unscrewed, the movable limiting rods 52 are removed, and then the test instrument 7 can be taken out.

[0048] The embodiment of the present application also provides a test instrument transfer method based on the above test instrument transfer trolley, which comprises the following steps: As shown in Figure 5 , the test instrument 7 is placed on the test instrument transfer trolley; when the test instrument 7 is stored, the movable wheel assembly 4 is adjusted to a first supporting state, so that the vehicle body 1 and the test instrument 7 assume a lying posture; When the test instrument 7 is used (that is, when the test instrument 7 needs to be used to test the engineering machinery), as shown in Figure 6 , the movable wheel assembly 4 is adjusted to a second supporting state, so that the vehicle body 1 and the test instrument 7 assume an inclined posture, and then the test instrument transfer trolley is moved through the first roller 2 and the second roller 42; after the test instrument transfer trolley is moved to a designated position (for example, an outdoor test site), as shown in Figure 7 , the movable wheel assembly 4 is adjusted to a third supporting state, so that the vehicle body 1 and the test instrument 7 assume a standing posture, and then the test instrument 7 is transferred out of the test instrument transfer trolley, so as to be used subsequently to test the engineering machinery.

[0049] Taking the tension sensor of the test instrument 7 as an example, when the traction test is carried out, since the tension sensor is in a vertical state after being taken out from the transfer trolley, at this time, the upper end of the tension sensor can be directly connected with the test vehicle (i.e. the engineering machinery to be tested) through the pin shaft, and the lower end of the tension sensor is connected with the ground anchor fixed on the ground through the pin shaft, so that the posture of the tension sensor does not need to be adjusted, time and labor are saved.

[0050] Further, in the embodiment, the test instrument transfer method further comprises: When the test instrument 7 is used up (i.e. after the test of the engineering machinery is completed), the test instrument 7 is transferred to the test instrument transfer trolley again (at this time, the movable wheel assembly 4 is in the third supporting state); then the movable wheel assembly 4 is adjusted to the second supporting state, so that the vehicle body 1 and the test instrument 7 are in an inclined posture, and then the test instrument transfer trolley is moved through the first roller 2 and the second roller 42; after the test instrument transfer trolley is moved to the storage position (for example, indoors), the movable wheel assembly 4 is adjusted to the first supporting state, so that the vehicle body 1 and the test instrument 7 are in a lying posture, and then the test instrument 7 can be stored more stably and safely. Since the test instrument 7 does not need to be taken off from the transfer trolley when stored, the lifting operation is saved, time and labor are saved.

[0051] The test instrument transfer trolley provided by the embodiment of the application does not need to take the test instrument 7 off from the transfer trolley when stored, and does not need to lift up and down; when tested, the test instrument 7 can be taken out for testing only by moving the transfer trolley to the specified position, adjusting the posture of the transfer trolley, and unlocking the limiting assembly 5, without the need of turning over the test instrument 7, so that the test instrument 7 is convenient and fast to use. Meanwhile, the transfer trolley has a simple structure, is convenient to assemble, and has a low cost. The current trolley needs 2-3 people to cooperate to use, while the transfer trolley in the application can be conveniently used by only 1-2 people, so that the labor cost can be saved.

[0052] The above merely illustrates the specific implementation of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A test instrument transfer cart, characterized by, The utility model relates to a test trolley, including car body (1), first gyro wheel (2) of setting in one end of car body (1), support subassembly (3) of setting in one side of car body (1) and movable wheel subassembly (4) of setting in the opposite side of car body (1), first gyro wheel (2) is rotatively connected with car body (1), support subassembly (3) is fixedly set up on car body (1) and is close to one end of first gyro wheel (2), and support subassembly (3) is used for carrying test instrument (7), Movable wheel subassembly (4) includes hinge assembly (41), second gyro wheel (42) and locking mechanism (43), hinge assembly (41) is hinged with car body (1), second gyro wheel (42) is rotatively connected with hinge assembly (41), and car body (1) is supported by first gyro wheel (2) and second gyro wheel (42) jointly, when hinge assembly (41) rotates relative to car body (1), movable wheel subassembly (4) has multiple different support states, to make car body (1) present different postures, Locking mechanism (43) is connected with hinge assembly (41) and car body (1) respectively, and locking mechanism (43) is used for locking hinge assembly (41) and car body (1), to make movable wheel subassembly (4) keep in the support state of demand.

2. The test instrument transfer cart of claim 1, wherein, Movable wheel subassembly (4) has first support state, second support state and third support state, When movable wheel subassembly (4) is in first support state, second gyro wheel (42) is located in one end of car body (1) away from first gyro wheel (2), and car body (1) presents flat posture, When movable wheel subassembly (4) is in second support state, second gyro wheel (42) is located between opposite ends of car body (1), and car body (1) presents inclined posture, When movable wheel subassembly (4) is in third support state, second gyro wheel (42) is located in one end of car body (1) close to first gyro wheel (2), and car body (1) presents standing posture.

3. The test instrument transfer cart of claim 1, wherein, Hinge assembly (41) includes pull rod (411) and support rod (412), the first end of support rod (412) is hinged with car body (1), and second gyro wheel (42) is rotatively connected with the second end of support rod (412), the first end of pull rod (411) is hinged with support rod (412), and the second end of pull rod (411) can be connected with different parts of car body (1), to make movable wheel subassembly (4) be in different support states, locking mechanism (43) is connected with pull rod (411) and car body (1) respectively, and locking mechanism (43) is used for locking pull rod (411) and car body (1).

4. The test instrument transfer cart of claim 3, wherein, Locking mechanism (43) includes locking pin (431), first lock hole (432) and multiple second lock holes (433), first lock hole (432) is set up in the second end of pull rod (411), and multiple second lock holes (433) are interval set up on car body (1), The first locking holes (432) on the pull rod (411) can correspond to a plurality of second locking holes (433) on the vehicle body (1) respectively when the hinge assembly (41) rotates relative to the vehicle body (1), and the locking pin (431) can be inserted into the first locking hole (432) and the corresponding second locking hole (433) at the same time to lock the pull rod (411) and the vehicle body (1).

5. The test instrument transfer cart of claim 4, wherein, The plurality of second locking holes (433) include a first sub-locking hole (433A), a second sub-locking hole (433B), and a third sub-locking hole (433C); and the movable wheel assembly (4) has a first supporting state, a second supporting state, and a third supporting state. When the locking pin (431) is inserted into the first locking hole (432) and the first sub-locking hole (433A) at the same time, the movable wheel assembly (4) remains in the first supporting state. When the locking pin (431) is inserted into the first locking hole (432) and the second sub-locking hole (433B) at the same time, the movable wheel assembly (4) remains in the second supporting state. When the locking pin (431) is inserted into the first locking hole (432) and the third sub-locking hole (433C) at the same time, the movable wheel assembly (4) remains in the third supporting state.

6. The test instrument transfer cart of claim 3, wherein, The pull rod (411) is an arc-shaped rod curved towards a side away from the vehicle body (1).

7. The test instrument transfer cart of claim 1, wherein, The supporting assembly (3) is further provided with a limiting assembly (5) arranged on the vehicle body (1) and located on the same side of the vehicle body (1) as the supporting assembly (3); the limiting assembly (5) is used for limiting the test instrument (7) on the vehicle body (1).

8. The test instrument transfer cart of claim 1, wherein, The supporting assembly (3) is provided with a rotatable pulley (30) for carrying the test instrument (7); the test instrument (7) can slide out of the test instrument transfer trolley through the pulley (30).

9. The test instrument transfer cart of any of claims 1-8, wherein, The vehicle body (1) is provided with a handle (6) at an end away from the first roller (2).

10. A test instrument transfer method based on the test instrument transfer cart according to claim 2, characterized by, The test instrument transfer method comprises: placing the test instrument (7) on the test instrument transfer trolley; when the test instrument (7) is stored, adjusting the movable wheel assembly (4) to the first supporting state so that the vehicle body (1) and the test instrument (7) assume a lying posture; when the test instrument (7) is used, adjusting the movable wheel assembly (4) to the second supporting state so that the vehicle body (1) and the test instrument (7) assume an inclined posture, and then moving the test instrument transfer trolley through the first roller (2) and the second roller (42); after the test instrument transfer trolley is moved to a designated position, adjusting the movable wheel assembly (4) to the third supporting state so that the vehicle body (1) and the test instrument (7) assume a standing posture, and then transferring the test instrument (7) out of the test instrument transfer trolley.

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